{"id":10412,"date":"2026-08-07T16:36:44","date_gmt":"2026-08-07T08:36:44","guid":{"rendered":"https:\/\/am-material.com\/?p=10412"},"modified":"2026-07-21T16:48:50","modified_gmt":"2026-07-21T08:48:50","slug":"how-4340-alloy-steel-powder-performs-in-powder-bed-fusion-systems","status":"publish","type":"post","link":"https:\/\/am-material.com\/tr\/news\/how-4340-alloy-steel-powder-performs-in-powder-bed-fusion-systems\/","title":{"rendered":"4340 Ala\u015f\u0131ml\u0131 \u00c7elik Tozunun Toz Yatak F\u00fczyon Sistemlerinde G\u00f6sterdi\u011fi Performans"},"content":{"rendered":"<h2 class=\"wp-block-heading\">H\u0131zl\u0131 Cevap<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4340 ala\u015f\u0131ml\u0131 \u00e7elik tozu<\/strong> lazer toz yatak f\u00fczyonu, y\u00f6nlendirilmi\u015f enerji biriktirme, ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme ve toz i\u015flemlerinde kullan\u0131lan k\u00fcresel Ni-Cr-Mo d\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131 \u00e7elik hammadde (nominal 0.40% C, 1,8% Ni, 0,8% Cr, 0,25% Mo, geri kalan\u0131 Fe) olup, lazer toz yatak f\u00fczyonu, y\u00f6nlendirilmi\u015f enerji biriktirme, ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme ve toz metalurjisi uygulamalar\u0131nda ultra y\u00fcksek mukavemetli yap\u0131sal par\u00e7alar\u0131n \u00fcretiminde kullan\u0131l\u0131r. Toz yatak f\u00fczyon sistemlerinde iyi performans g\u00f6sterir ancak sertle\u015febilirli\u011fi dikkate al\u0131nmal\u0131d\u0131r: 1.000-1.900 MPa su verme ve temperleme sonras\u0131 \u00e7ekme mukavemeti sa\u011flayan ayn\u0131 kimyasal bile\u015fim, ayn\u0131 zamanda bas\u0131lm\u0131\u015f yap\u0131y\u0131 martensitik d\u00f6n\u00fc\u015f\u00fcm gerilmelerine ve \u00e7atlamaya yatk\u0131n hale getirir; bu nedenle ba\u015far\u0131l\u0131 bir LPBF uygulamas\u0131 i\u00e7in 100-200 \u00b0C'lik bask\u0131 plakas\u0131 \u00f6n \u0131s\u0131tmas\u0131, 250-350 W ve 800-1200 mm\/s civar\u0131nda muhafazakar tarama parametreleri, 30-50 mikron katman kal\u0131nl\u0131\u011f\u0131 ve bask\u0131 sonras\u0131 derhal gerilim giderme uygulanmal\u0131d\u0131r. Toz kalitesi \u00f6n ko\u015fullar\u0131 aras\u0131nda LPBF i\u00e7in 15-53 mikron PSD (DED i\u00e7in 45-106 mikron), '\u00fcn \u00fczerinde k\u00fcresellik, a\u011f\u0131rl\u0131k\u00e7a %0,05'in alt\u0131nda oksijen ve 20 s\/50 g'nin alt\u0131nda Hall ak\u0131\u015f\u0131 yer almaktad\u0131r. S\u00f6nd\u00fcrme ve tavlama i\u015flemlerinden sonra, bas\u0131lan 4340 par\u00e7alar\u0131 tavlama s\u0131cakl\u0131\u011f\u0131na ba\u011fl\u0131 olarak 28-50 HRC sertli\u011fe ula\u015f\u0131r ve di\u015fliler, \u015faftlar ve havac\u0131l\u0131k ba\u011flant\u0131 par\u00e7alar\u0131 i\u00e7in uygun yorulma ve k\u0131r\u0131lma toklu\u011funa sahip olur. Al\u0131c\u0131lar, kimyasal bile\u015fim, oksijen, PSD ve ak\u0131\u015f de\u011ferlerini kapsayan parti sertifikalar\u0131n\u0131 talep etmeli ve \u0131s\u0131l i\u015flem d\u00f6ng\u00fcs\u00fcn\u00fc sonradan akla gelen bir ad\u0131m olarak de\u011fil, s\u00fcre\u00e7 tasar\u0131m\u0131n\u0131n bir par\u00e7as\u0131 olarak planlamal\u0131d\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4340 Ala\u015f\u0131ml\u0131 \u00c7elik Tozu Nedir ve End\u00fcstriyel \u00d6nemi Nedir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4340 ala\u015f\u0131ml\u0131 \u00e7elik tozu<\/strong> AISI\/SAE 4340\u2019\u0131n toz halidir; bu, makine m\u00fchendisli\u011finde en \u00f6nemli ultra y\u00fcksek mukavemetli \u00e7eliklerden biridir. Bu kalite, AISI 4340 ve UNS G43400 olarak standartla\u015ft\u0131r\u0131lm\u0131\u015f nikel-krom-molibden d\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131 \u00e7elik ailesine aittir ve Avrupa kaliteleri 34CrNiMo6 (1.6582) ve 36CrNiMo4 ile yak\u0131ndan ili\u015fkilidir. D\u00f6vme haliyle, kesit boyutlar\u0131n\u0131n b\u00fcy\u00fck, y\u00fcklerin a\u015f\u0131r\u0131 oldu\u011fu ve sertlik u\u011fruna tokluktan \u00f6d\u00fcn verilemeyece\u011fi her yerde, u\u00e7ak ini\u015f tak\u0131mlar\u0131nda, krank millerinde, di\u015flilerde ve m\u00fchimmat bile\u015fenlerinde neredeyse bir as\u0131rd\u0131r kullan\u0131lmaktad\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u015eu ailenin i\u00e7inde <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/low-alloy-steel-powder\/\" rel=\"noreferrer noopener\">d\u00fc\u015f\u00fck ala\u015fimli \u00e7eli\u0307k tozlari<\/a> Katmanl\u0131 \u00fcretim ve toz metalurjisi i\u00e7in kullan\u0131labilen 4340, spektrumun y\u00fcksek mukavemetli ucunda yer al\u0131r. H13 gibi tak\u0131m \u00e7elikleri, 4340\u2019\u0131n s\u0131cak sertli\u011fini a\u015far ve maraging \u00e7elikleri ise mukavemet-tokluk oran\u0131n\u0131 a\u015far; ancak hi\u00e7biri 4340'\u0131n derin sertle\u015febilirlik, kesit boyunca mukavemet ve maliyet a\u00e7\u0131s\u0131ndan sundu\u011fu kombinasyona ula\u015famaz. Nikel i\u00e7eri\u011fi, ala\u015f\u0131ma kendine \u00f6zg\u00fc sertle\u015febilirlik \u00f6zelli\u011fini kazand\u0131r\u0131r: a\u011f\u0131r kesitler bile su verme s\u0131ras\u0131nda homojen bir \u015fekilde martensite d\u00f6n\u00fc\u015f\u00fcr; bu da toz metalurjisi a\u00e7\u0131s\u0131ndan, de\u011fi\u015fken duvar kal\u0131nl\u0131klar\u0131na sahip par\u00e7alar boyunca tutarl\u0131 bir \u015fekilde y\u00fcksek mukavemet anlam\u0131na gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4340 tozunun end\u00fcstriyel \u00f6nemi, \u00e7e\u015fitli \u00f6zelliklerine dayanmaktad\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ultra y\u00fcksek mukavemet \u00f6zelli\u011fi<\/strong>: D\u00fc\u015f\u00fck temperleme s\u0131cakl\u0131klar\u0131nda 1.000 MPa'dan yakla\u015f\u0131k 1.900 MPa'ya kadar su verme ve temperleme sonras\u0131 \u00e7ekme mukavemeti.<\/li>\n\n\n\n<li><strong>M\u00fckemmel sertle\u015febilirlik<\/strong>: Kal\u0131n kesitler boyunca homojen sertlik; bu, DED ile onar\u0131lm\u0131\u015f ve geni\u015f formatl\u0131 bask\u0131 par\u00e7alar\u0131 i\u00e7in hayati \u00f6nem ta\u015f\u0131r.<\/li>\n\n\n\n<li><strong>Mukavemet s\u0131n\u0131f\u0131na g\u00f6re iyi bir tokluk<\/strong>: Charpy darbe dayan\u0131m\u0131 de\u011ferleri, y\u00fcksek sertlik seviyelerinde bile ge\u00e7erlili\u011fini korur.<\/li>\n\n\n\n<li><strong>Yorulma direnci<\/strong>: \u015eaftlar ve di\u015fliler gibi y\u00fckl\u00fc bile\u015fenlerin d\u00f6nd\u00fcr\u00fclmesi ve sal\u0131n\u0131m\u0131n\u0131n sa\u011flanmas\u0131 konusunda uzun y\u0131llara dayanan bir deneyime sahiptir.<\/li>\n\n\n\n<li><strong>A\u015f\u0131nma performans\u0131<\/strong>: Y\u00fcksek s\u0131cakl\u0131k varyantlar\u0131, kal\u0131plarda, tak\u0131m u\u00e7lar\u0131nda ve a\u015f\u0131nmaya maruz kalan bile\u015fenlerde kullan\u0131l\u0131r.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Toz yatakl\u0131 f\u00fczyon y\u00f6nteminde, 4340, daha basit \u00e7elikleri zaten ustaca kullanabilen kullan\u0131c\u0131lar i\u00e7in y\u00fcksek performansl\u0131 bir malzeme olarak de\u011ferlendirilebilir. Karbon i\u00e7eri\u011fi ve sertle\u015febilirli\u011fi nedeniyle, bask\u0131 s\u00fcreci kal\u0131nt\u0131 gerilim y\u00f6netimi dikkate al\u0131narak tasarlanmal\u0131d\u0131r; ancak bunun kar\u015f\u0131l\u0131\u011f\u0131nda, uygun \u0131s\u0131l i\u015flemden ge\u00e7irildikten sonra d\u00f6vme 4340\u2019a yakla\u015fan veya onunla e\u015fde\u011fer mekanik \u00f6zelliklere sahip bask\u0131l\u0131 par\u00e7alar elde edilir.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"624\" height=\"503\" src=\"https:\/\/am-material.com\/wp-content\/uploads\/2026\/05\/4340-LOW-ALLOY-STEEL-POWDER.png\" alt=\"4340 D\u00dc\u015e\u00dcK ALA\u015eIMLI \u00c7EL\u0130K TOZU\" class=\"wp-image-10339\" title=\"\" srcset=\"https:\/\/am-material.com\/wp-content\/uploads\/2026\/05\/4340-LOW-ALLOY-STEEL-POWDER.png 624w, https:\/\/am-material.com\/wp-content\/uploads\/2026\/05\/4340-LOW-ALLOY-STEEL-POWDER-300x242.png 300w, https:\/\/am-material.com\/wp-content\/uploads\/2026\/05\/4340-LOW-ALLOY-STEEL-POWDER-15x12.png 15w\" sizes=\"(max-width: 624px) 100vw, 624px\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Kimyasal Bile\u015fim Genel Bak\u0131\u015f: Elementlerin \u0130\u015flevlerine \u0130li\u015fkin Referans<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4340'\u0131n kimyasal bile\u015fimi \u00f6zenle dengelenmi\u015ftir: y\u00fcksek sertlik i\u00e7in yeterli karbon, sertle\u015febilirlik ve tokluk i\u00e7in yeterli nikel, ayr\u0131ca su verme tepkisini derinle\u015ftirmek ve temperleme k\u0131r\u0131lganl\u0131\u011f\u0131na kar\u015f\u0131 diren\u00e7 sa\u011flamak i\u00e7in krom ve molibden i\u00e7erir. Toz \u00e7elik kaliteleri, AISI 4340 s\u0131n\u0131rlar\u0131na uymakta olup, atomizasyon s\u0131ras\u0131nda eklenen oksijen ve azot \u00fczerinde ek kontroller uygulanmaktad\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4340 Ala\u015f\u0131ml\u0131 \u00c7eli\u011fin Kimyasal Bile\u015fimi<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Element<\/th><th class=\"has-text-align-left\" data-align=\"left\">Min (%)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Max (%)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Rol<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Karbon (C)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.38<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.43<\/td><td class=\"has-text-align-left\" data-align=\"left\">Birincil sertle\u015ftirme unsuru; su verme sonras\u0131 sertlik ve mukavemeti belirler<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Nikel (Ni)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1.65<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.00<\/td><td class=\"has-text-align-left\" data-align=\"left\">Derin sertle\u015febilirlik; toklu\u011fu ve d\u00fc\u015f\u00fck s\u0131cakl\u0131kta darbe dayan\u0131m\u0131n\u0131 art\u0131r\u0131r<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Krom (Cr)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.70<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.90<\/td><td class=\"has-text-align-left\" data-align=\"left\">Sertle\u015febilirlik, a\u015f\u0131nma direnci ve temperleme direnci<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Molibden (Mo)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.20<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.30<\/td><td class=\"has-text-align-left\" data-align=\"left\">S\u0131cak i\u015fleme s\u0131ras\u0131nda olu\u015fan k\u0131r\u0131lganl\u0131\u011f\u0131 \u00f6nler; sertle\u015febilirli\u011fi ve s\u0131cak mukavemeti art\u0131r\u0131r<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Manganez (Mn)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.60<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.80<\/td><td class=\"has-text-align-left\" data-align=\"left\">Oksijen giderici; sertle\u015febilirlik ve s\u0131cak i\u015flenebilirlik<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Silisyum (Si)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.15<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.35<\/td><td class=\"has-text-align-left\" data-align=\"left\">Deoksitleyici; kat\u0131 \u00e7\u00f6zelti ile g\u00fc\u00e7lendirme<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Fosfor (P)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2013<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.035<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kirlilik; tane s\u0131n\u0131rlar\u0131n\u0131 k\u0131r\u0131lganla\u015ft\u0131r\u0131r<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">K\u00fck\u00fcrt (S)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2013<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.040<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kirlilik; toklu\u011fu azaltan MnS kal\u0131nt\u0131lar\u0131 olu\u015fturur<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Oksijen (O, toz)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2013<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.05<\/td><td class=\"has-text-align-left\" data-align=\"left\">Toz, g\u00f6zenekler aras\u0131nda bulunur; s\u00fcneklik, yorulma ve inkl\u00fczyon i\u00e7eri\u011fini etkiler<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Demir (Fe)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Denge<\/td><td class=\"has-text-align-left\" data-align=\"left\">Denge<\/td><td class=\"has-text-align-left\" data-align=\"left\">Temel matris<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Karbon<\/strong> 0,38-0,431 TP3T aral\u0131\u011f\u0131, ala\u015f\u0131m\u0131n \u00f6zelliklerini belirler. Bu de\u011fer, su verme sonras\u0131 sertli\u011fin 50 HRC\u2019nin \u00fczerine \u00e7\u0131kmas\u0131n\u0131 sa\u011flayacak kadar y\u00fcksektir; bu nedenle, bas\u0131lm\u0131\u015f 4340 ala\u015f\u0131m\u0131, 316L veya maraging \u00e7eli\u011fi gibi i\u015flenemez: bask\u0131l\u0131 katmanlar so\u011fuduk\u00e7a, \u00f6stenit sert ve k\u0131r\u0131lgan martensite d\u00f6n\u00fc\u015f\u00fcr; bu da termal gradyanlar kontrol edilmezse \u00e7atlamaya neden olan d\u00f6n\u00fc\u015f\u00fcm gerilmeleri olu\u015fturur. Bu tek ger\u00e7ek, yukar\u0131daki parametre k\u0131lavuzunda tart\u0131\u015f\u0131lan proses disiplinlerinin \u00e7o\u011funu a\u00e7\u0131klamaktad\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nikel<\/strong> Sertle\u015febilirli\u011fin temel unsuru ve toklu\u011fun garant\u00f6r\u00fcd\u00fcr. 1,65-2,001 TP3T ilavesi, martensit ba\u015flang\u0131\u00e7 s\u0131cakl\u0131\u011f\u0131n\u0131 \u0131l\u0131ml\u0131 bir \u015fekilde d\u00fc\u015f\u00fcr\u00fcrken, bainit ve perlit d\u00f6n\u00fc\u015f\u00fcmlerini \u00f6nemli \u00f6l\u00e7\u00fcde yava\u015flat\u0131r; b\u00f6ylece par\u00e7alar derinlemesine ve homojen bir \u015fekilde sertle\u015fir. Nikel ayr\u0131ca, sade karbon \u00e7eliklerinin cams\u0131 k\u0131r\u0131lganl\u0131\u011fa u\u011frad\u0131\u011f\u0131 y\u00fcksek mukavemet seviyelerinde 4340 \u00e7eli\u011finin kullan\u0131\u015fl\u0131 toklu\u011fundan en \u00e7ok sorumlu olan elementtir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Krom ve molibden<\/strong> ikili olarak i\u015flev g\u00f6r\u00fcr. Krom, sertle\u015febilirlik, a\u015f\u0131nma direnci ve temperleme s\u0131ras\u0131nda yumu\u015famaya kar\u015f\u0131 diren\u00e7 sa\u011flar; molibden, her ne kadar sadece 0,20-0,30% oran\u0131nda mevcut olsa da, Ni-Cr \u00e7eliklerinin 350-550 \u00b0C aral\u0131\u011f\u0131nda tutuldu\u011funda veya yava\u015f\u00e7a so\u011futuldu\u011funda maruz kald\u0131\u011f\u0131 tokluk kayb\u0131 olan temper k\u0131r\u0131lganl\u0131\u011f\u0131n\u0131 bast\u0131rmada \u00e7ok b\u00fcy\u00fck bir rol oynar. \u0130\u015fte bu nedenle 4340, daha basit Ni-Cr \u00e7eliklerinin ba\u015faramad\u0131\u011f\u0131 \u015fekilde temiz bir \u015fekilde temperlenir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toz al\u0131c\u0131lar\u0131 i\u00e7in, <strong>oksijen<\/strong> ala\u015f\u0131m elementleriyle ayn\u0131 derecede dikkatle incelenmelidir. Atomizasyon ve tozun yeniden kullan\u0131m\u0131 oksit i\u00e7eri\u011fini art\u0131r\u0131r; ayr\u0131ca, a\u011f\u0131rl\u0131k\u00e7a yakla\u015f\u0131k 0,05\u2019in \u00fczerindeki oksijen miktar\u0131, inkl\u00fczyon yo\u011funlu\u011funu y\u00fckseltir ve bu da, t\u00fcm de\u011fer \u00f6nerisi yorulma a\u00e7\u0131s\u0131ndan kritik yap\u0131sal hizmetlere dayanan bir malzemede s\u00fcneklili\u011fi ve yorulma \u00f6mr\u00fcn\u00fc do\u011frudan azalt\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00fchendislik Tasar\u0131m\u0131nda Kullan\u0131lmak \u00dczere Fiziksel ve Mekanik \u00d6zellikler<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4340 malzemesinin tasar\u0131m de\u011ferleri, \u0131s\u0131l i\u015flem ko\u015fullar\u0131na b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ba\u011fl\u0131d\u0131r; bu nedenle a\u015fa\u011f\u0131daki verilerde, tavlanm\u0131\u015f temel durum ile kullan\u0131m ko\u015fullar\u0131yla ilgili su verme ve temperleme i\u015flemlerinden ge\u00e7irilmi\u015f durumlar birbirinden ayr\u0131lm\u0131\u015ft\u0131r. Bu de\u011ferler, d\u00f6vme e\u015fde\u011feri malzemenin oda s\u0131cakl\u0131\u011f\u0131nda yap\u0131lan testleri i\u00e7in ge\u00e7erlidir; iyi i\u015flenmi\u015f LPBF ve HIP i\u015flemine tabi tutulmu\u015f toz metalurjisi par\u00e7alar\u0131 da ayn\u0131 aral\u0131klara ula\u015f\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Anahtar \u00d6zellikler<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">M\u00fclkiyet<\/th><th class=\"has-text-align-left\" data-align=\"left\">De\u011fer<\/th><th class=\"has-text-align-left\" data-align=\"left\">Birim<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Yo\u011funluk<\/td><td class=\"has-text-align-left\" data-align=\"left\">7.85<\/td><td class=\"has-text-align-left\" data-align=\"left\">g\/cm3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Erime aral\u0131\u011f\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">1427-1500<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b0C<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Termal iletkenlik<\/td><td class=\"has-text-align-left\" data-align=\"left\">44-46<\/td><td class=\"has-text-align-left\" data-align=\"left\">W\/m*K<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Termal genle\u015fme katsay\u0131s\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">12.3<\/td><td class=\"has-text-align-left\" data-align=\"left\">um\/m*K<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Elastik mod\u00fcl\u00fc<\/td><td class=\"has-text-align-left\" data-align=\"left\">205<\/td><td class=\"has-text-align-left\" data-align=\"left\">GPa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u00c7ekme mukavemeti (tavlanm\u0131\u015f)<\/td><td class=\"has-text-align-left\" data-align=\"left\">745<\/td><td class=\"has-text-align-left\" data-align=\"left\">MPa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Akma mukavemeti (tavlanm\u0131\u015f)<\/td><td class=\"has-text-align-left\" data-align=\"left\">470<\/td><td class=\"has-text-align-left\" data-align=\"left\">MPa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u00c7ekme mukavemeti (Q&amp;T, 200 \u00b0C temperleme)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1860-1930<\/td><td class=\"has-text-align-left\" data-align=\"left\">MPa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Akma mukavemeti (Q&amp;T, 200 \u00b0C temperleme)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1640-1700<\/td><td class=\"has-text-align-left\" data-align=\"left\">MPa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Uzama (Q&amp;T, y\u00fcksek mukavemetli)<\/td><td class=\"has-text-align-left\" data-align=\"left\">10-12<\/td><td class=\"has-text-align-left\" data-align=\"left\">%<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Sertlik aral\u0131\u011f\u0131 (Q&amp;T)<\/td><td class=\"has-text-align-left\" data-align=\"left\">28-50<\/td><td class=\"has-text-align-left\" data-align=\"left\">HRC<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Charpy V-\u00e7entik (Q&amp;T, 28-32 HRC)<\/td><td class=\"has-text-align-left\" data-align=\"left\">60-80<\/td><td class=\"has-text-align-left\" data-align=\"left\">J<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Bu <strong>mukavemet spektrumu<\/strong> Tasar\u0131m\u0131n ana \u00f6zelli\u011fidir. Yakla\u015f\u0131k 200 \u00b0C\u2019de yap\u0131lan temperleme i\u015flemi, a\u015f\u0131nma ve tak\u0131m uygulamalar\u0131 i\u00e7in neredeyse maksimum sertli\u011fi (~48-50 HRC) ve 1.900 MPa\u2019ya yakla\u015fan \u00e7ekme mukavemetini korur; 425-650 \u00b0C'de yap\u0131lan temperleme i\u015flemi ise mukavemet yerine tokluk sa\u011flar; bu i\u015flem sonucunda 28-34 HRC sertlik ve 1.000-1.200 MPa mukavemet elde edilir ve en iyi darbe ve yorulma performans\u0131 sa\u011flan\u0131r; bu da \u00e7o\u011fu yap\u0131sal ve d\u00f6nen par\u00e7an\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131 aral\u0131kt\u0131r. Tek bir toz bile\u015fimiyle 900 MPa'l\u0131k bir mukavemet aral\u0131\u011f\u0131nda sa\u011flanan bu ayarlanabilirlik, tedarik zinciri a\u00e7\u0131s\u0131ndan ger\u00e7ek bir avantajd\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu <strong>205 GPa'l\u0131k elastik mod\u00fcl<\/strong> 7,85 g\/cm\u00b3'l\u00fck yo\u011funlu\u011fu nedeniyle 4340 par\u00e7alar\u0131 sert ve a\u011f\u0131rd\u0131r; bas\u0131l\u0131 4340 par\u00e7alar\u0131n hafifletilmesine y\u00f6nelik arg\u00fcmanlar, malzeme ikamesi yerine topoloji optimizasyonu ve par\u00e7a birle\u015ftirmeye dayanmaktad\u0131r. Yakla\u015f\u0131k 45 W\/m*K olan \u0131s\u0131 iletkenli\u011fi m\u00fctevaz\u0131 bir seviyededir ve al\u00fcminyum ala\u015f\u0131mlar\u0131n\u0131n yakla\u015f\u0131k d\u00f6rtte biri kadard\u0131r; bu nedenle, konformal so\u011futma kanallar\u0131na sahip bas\u0131lm\u0131\u015f 4340 kal\u0131plar, geleneksel delme y\u00f6ntemiyle \u00fcretilen kal\u0131plara k\u0131yasla d\u00f6ng\u00fc s\u00fcresi a\u00e7\u0131s\u0131ndan ger\u00e7ek bir avantaj sa\u011flar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LPBF tasar\u0131mc\u0131lar\u0131 i\u00e7in<\/strong>, tabloda yer almayan kritik \u00f6zellik \u015fudur: sertle\u015febilirlik. Hava so\u011futmas\u0131 tek ba\u015f\u0131na ince kesitleri k\u0131smen sertle\u015ftirebildi\u011finden, bask\u0131dan \u00e7\u0131kt\u0131\u011f\u0131 haliyle 4340, kal\u0131nt\u0131 gerilim alt\u0131nda hapsolmu\u015f sert martensitik b\u00f6lgeler i\u00e7erir. Standart uygulama, bask\u0131 tamamland\u0131ktan hemen sonra, desteklerin \u00e7\u0131kar\u0131lmas\u0131ndan \u00f6nce 550-650 \u00b0C'de gerilim giderme i\u015flemi yapmak ve ard\u0131ndan tam \u00f6stenitleme-s\u00f6nd\u00fcrme-tavlama d\u00f6ng\u00fcs\u00fcn\u00fc uygulamakt\u0131r (yakla\u015f\u0131k 845 \u00b0C'de \u00f6stenitleme, ya\u011f veya polimerle s\u00f6nd\u00fcrme, hedef sertli\u011fe kadar tavlama). Gerilim giderme i\u015fleminin atlanmas\u0131, par\u00e7alarda \u00e7atlak olu\u015fumu ve geometrik bozulmalar\u0131n en yayg\u0131n tek nedenidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Yorgunluk performans\u0131<\/strong> Toz yatakl\u0131 par\u00e7alarda bu durum, g\u00f6zeneklilik ve y\u00fczey durumuna ba\u011fl\u0131d\u0131r. <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/hot-isostatic-pressing-hip\/\" rel=\"noreferrer noopener\">S\u0131cak izostatik presleme (HIP)<\/a> \u0130\u00e7 g\u00f6zenekleri kapat\u0131r ve 10^7 d\u00f6ng\u00fcde yorulma mukavemetini, i\u015flenmemi\u015f y\u00fczeylere k\u0131yasla yakla\u015f\u0131k iki kat\u0131na \u00e7\u0131kar\u0131rken, i\u015flenmi\u015f veya cilalanm\u0131\u015f y\u00fczeyler ise d\u00f6vme malzemelerle aras\u0131ndaki kalan fark\u0131n b\u00fcy\u00fck bir k\u0131sm\u0131n\u0131 kapat\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mevcut Kaliteler: Par\u00e7ac\u0131k Da\u011f\u0131l\u0131m\u0131 ve Tolerans Standartlar\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4340 tozu, her bir konsolidasyon s\u00fcrecine uygun kalitelerde piyasada bulunmakta olup, LPBF kaliteleri en kat\u0131 morfoloji ve interstisyel gerekliliklere sahiptir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mevcut Teknik \u00d6zellikler<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Parametre<\/th><th class=\"has-text-align-left\" data-align=\"left\">Standart\/De\u011fer<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">LPBF \/ SLM i\u00e7in PSD<\/td><td class=\"has-text-align-left\" data-align=\"left\">15-53 um (D10 ~22, D50 ~36, D90 ~55)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">DED i\u00e7in PSD<\/td><td class=\"has-text-align-left\" data-align=\"left\">45\u2013106 um veya 53\u2013150 um<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme i\u00e7in PSD dosyas\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">15\u201345 um<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">MIM i\u00e7in PSD<\/td><td class=\"has-text-align-left\" data-align=\"left\">0-22 um veya 0-38 um<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Bas\u0131n ve sinterleme y\u00f6ntemiyle \u00fcretilen PM i\u00e7in PSD<\/td><td class=\"has-text-align-left\" data-align=\"left\">45\u2013150 \u00b5m<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">K\u00fcresellik<\/td><td class=\"has-text-align-left\" data-align=\"left\">&gt;= 93%<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Salon ak\u0131\u015f h\u0131z\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt;= 20 saniye\/50 g<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">G\u00f6r\u00fcn\u00fcr yo\u011funluk<\/td><td class=\"has-text-align-left\" data-align=\"left\">&gt;= 4,3 g\/cm\u00b3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Musluk yo\u011funlu\u011fu<\/td><td class=\"has-text-align-left\" data-align=\"left\">&gt;= 4,9 g\/cm\u00b3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Oksijen i\u00e7eri\u011fi<\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt;= 0,05 wt% (premium &lt;= 0,03 wt%)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Kimya referans\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">AISI\/SAE 4340, UNS G43400<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Paketleme<\/td><td class=\"has-text-align-left\" data-align=\"left\">Vakumla kapat\u0131lm\u0131\u015f veya argonla doldurulmu\u015f, 25-50 kg'l\u0131k variller<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Bu <strong>15-53 mikron LPBF kesimi<\/strong> Toz yatak f\u00fczyonunda varsay\u0131lan ayard\u0131r; ak\u0131\u015fkanl\u0131\u011f\u0131 korumak amac\u0131yla 15 mikronun alt\u0131ndaki ince par\u00e7ac\u0131klar 10% standard\u0131na uygun olarak tutulur. Bu yo\u011funluktaki \u00e7elik tozlar\u0131, ayn\u0131 kesim kal\u0131nl\u0131\u011f\u0131nda al\u00fcminyuma g\u00f6re daha kolay akar; bu nedenle 4340 katmanlar\u0131, temel yeniden kaplama sistemlerine sahip makinelerde bile e\u015fit bir \u015fekilde yay\u0131l\u0131r. Bu da, 316L'den bir \u00fcst seviyeye ge\u00e7mek isteyen at\u00f6lyeler i\u00e7in 4340\u201c\u0131n pop\u00fcler bir ilk \u201dzor\u201d malzeme olmas\u0131n\u0131n nedenlerinden biridir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DED ve lazer kaplama kaliteleri<\/strong> Yer\u00e7ekimi ve ta\u015f\u0131y\u0131c\u0131 gazl\u0131 toz besleyicilerden g\u00fcvenilir bir \u015fekilde ak\u0131\u015f sa\u011flayan, daha iri taneli 45-106 veya 53-150 mikronluk kesimleri kullan\u0131n. Y\u00f6nlendirilmi\u015f enerji biriktirme y\u00f6nteminde, 4340\u2019\u0131n sertle\u015febilirli\u011fi onar\u0131m \u00e7al\u0131\u015fmalar\u0131 i\u00e7in bir avantajd\u0131r: Katmanlar aras\u0131 s\u0131cakl\u0131klar uygun \u015fekilde kontrol edildi\u011fi s\u00fcrece, kaplama katmanlar\u0131 \u00e7o\u011fu geometride \u00f6n \u0131s\u0131tma \u00e7atlamas\u0131 olmadan tutarl\u0131 bir \u015fekilde sertle\u015fir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme ve MIM<\/strong> En ince fraksiyonlar\u0131 kullan\u0131r. Ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme y\u00f6nteminde 15-45 mikron boyutundaki kesilmi\u015f tozlar 97-99% yo\u011funlu\u011funa kadar sinterlenir ve ard\u0131ndan HIP i\u015flemi ile kalan bo\u015fluklar doldurulur; buna kar\u015f\u0131l\u0131k MIM y\u00f6nteminde 38 mikronun alt\u0131ndaki tozlar, ate\u015fli silah bile\u015fenleri ve elektrikli alet par\u00e7alar\u0131 gibi y\u00fcksek hacimli k\u00fc\u00e7\u00fck par\u00e7alar\u0131n \u00fcretiminde kullan\u0131l\u0131r. Bu sinterleme y\u00f6ntemlerinde, sinterleme i\u015flemi tozun i\u00e7inde \u00e7\u00f6z\u00fcnm\u00fc\u015f oksijeni gideremedi\u011fi i\u00e7in oksijen spesifikasyonu, kaliteyi belirleyen temel de\u011fi\u015fken haline gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sertifikasyon ve izlenebilirlik<\/strong> Beklentiler havac\u0131l\u0131k sekt\u00f6r\u00fcndeki uygulamalar\u0131 yans\u0131tmaktad\u0131r: ISO 13320 standard\u0131na g\u00f6re lazer difraksiyonlu PSD analizi, OES veya ICP ile tam kimyasal analiz, inert gaz f\u00fczyonu ile oksijen-azot analizi, ASTM B213 standard\u0131na g\u00f6re Hall ak\u0131\u015f \u00f6l\u00e7\u00fcm\u00fc ve her parti i\u00e7in SEM morfoloji do\u011frulamas\u0131. 4340\u2019\u0131n mekanik \u00f6zellikleri, par\u00e7a \u00fcreticisi taraf\u0131ndan uygulanan \u0131s\u0131l i\u015fleme ba\u011fl\u0131 oldu\u011fundan, toz sertifikalar\u0131 girdi kalitesini belgelemekte; m\u00fc\u015fterinin kendi Q&amp;T d\u00f6ng\u00fcs\u00fcne g\u00f6re yap\u0131lan numune testleri ise nihai performans\u0131 do\u011frulamaktad\u0131r. Ciddi tedarik\u00e7iler, eriyikten varile kadar atomizasyon \u0131s\u0131s\u0131n\u0131n izlenebilirli\u011fi ile bunu desteklemektedir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Eritimden Nihai Toz \u00dcr\u00fcn Haline Kadar \u00dcretim A\u015famalar\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4340 tozu, end\u00fcstri standard\u0131 olarak inert gaz atomizasyonu y\u00f6ntemiyle \u00fcretilir; \u00fcretim s\u00fcreci, karbon i\u00e7eri\u011fini 0,38-0,431 TP3T aral\u0131\u011f\u0131nda tutacak ve oksijen giri\u015fini engelleyecek \u015fekilde tasarlanm\u0131\u015ft\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Erime<\/strong> \u0130\u015flem, vakum veya inert atmosferli bir ind\u00fcksiyon f\u0131r\u0131n\u0131na y\u00fcklenen d\u00fc\u015f\u00fck kal\u0131nt\u0131l\u0131 hurda, demir ve ferroalev eklemeleri (FeNi, FeCr, FeMo, FeMn) ile ba\u015flar. Karbon kontrol\u00fc, eritme s\u00fcrecinin en \u00f6nemli unsurudur: bazik astarl\u0131 ind\u00fcksiyon eritme i\u015flemlerinde karbon, oksidasyon sonucu kaybolma e\u011filimindedir ve refrakterlerden \u00f6ng\u00f6r\u00fclemez bir \u015fekilde karbon al\u0131nabilir; bu nedenle deneyimli \u00fcreticiler, dar spesifikasyon aral\u0131\u011f\u0131n\u0131 tutturmak i\u00e7in kapal\u0131 eritme, ge\u00e7 karbon ilavesi ve d\u00f6k\u00fcm \u00f6ncesi analiz ile d\u00fczeltici kesme ilaveleri kullan\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/gas-atomization-powders-process\/\" rel=\"noreferrer noopener\">Gaz atomizasyonu (GA)<\/a><\/strong> eriyi toza d\u00f6n\u00fc\u015ft\u00fcr\u00fcr. Yakla\u015f\u0131k 1600-1650 \u00b0C\u2019ye kadar a\u015f\u0131r\u0131 \u0131s\u0131t\u0131lan 4340 eriyi, refrakter bir noz\u00fclden ge\u00e7erek, ak\u0131\u015f\u0131 damlac\u0131klara ay\u0131ran birbirine yakla\u015fan y\u00fcksek bas\u0131n\u00e7l\u0131 argon veya azot jetlerine d\u00f6k\u00fcl\u00fcr. Damlac\u0131klar, kule i\u00e7inde serbest d\u00fc\u015f\u00fc\u015f s\u0131ras\u0131nda k\u00fcreselle\u015fir ve kat\u0131la\u015f\u0131r. Azot atomizasyonu, \u00e7elik i\u00e7in yayg\u0131n ve ekonomik bir y\u00f6ntemdir; argon ise minimum azot al\u0131m\u0131 ve en d\u00fc\u015f\u00fck uydu i\u00e7eri\u011fi gerektiren \u00fcst\u00fcn kaliteli LPBF s\u0131n\u0131flar\u0131 i\u00e7in tercih edilir. \u0130yi y\u00f6netilen \u00fcretim s\u00fcre\u00e7lerinde, %0,02-0,04 a\u011f\u0131rl\u0131k\u00e7a oksijen ile '\u00fcn \u00fczerinde k\u00fcresellik elde edilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u0131n\u0131fland\u0131rma<\/strong> Bunun ard\u0131ndan, \u00e7ok katl\u0131 eleme ve hava s\u0131n\u0131fland\u0131rmas\u0131 y\u00f6ntemleri kullan\u0131larak, atomize edildi\u011fi haliyle elde edilen da\u011f\u0131l\u0131m yukar\u0131da listelenen ticari aral\u0131klara indirgenir. \u00c7elik tozunun s\u0131n\u0131fland\u0131r\u0131lmas\u0131, al\u00fcminyuma k\u0131yasla daha az tehlikelidir (\u00e7eli\u011fin tutu\u015fma enerjileri g\u00f6z \u00f6n\u00fcne al\u0131nd\u0131\u011f\u0131nda yan\u0131c\u0131 toz endi\u015fesi yoktur); bu da daha y\u00fcksek verimli geleneksel ekipmanlar\u0131n kullan\u0131lmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kalite kontrol ve paketleme<\/strong> zinciri tamamlay\u0131n:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Kimyasal analiz, oksijen-azot, PSD, ak\u0131\u015f h\u0131z\u0131 ile g\u00f6r\u00fcnen ve s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f yo\u011funluk \u00f6l\u00e7\u00fcmleri i\u00e7in numune alma.<\/li>\n\n\n\n<li>K\u00fcresellik, uydu par\u00e7ac\u0131klar ve i\u00e7i bo\u015f par\u00e7ac\u0131klar\u0131n belirlenmesi i\u00e7in SEM morfoloji incelemesi.<\/li>\n\n\n\n<li>Kampanya genelinde kimyasal bile\u015fim ve PSD\u2019yi homojenle\u015ftirmek amac\u0131yla kar\u0131\u015ft\u0131rma i\u015flemi.<\/li>\n\n\n\n<li>\u00c7elik tozu bile nemli ortamda depoland\u0131\u011f\u0131nda y\u00fczeyinde oksitlenme meydana gelir ve nemi emer; bu da ak\u0131\u015fkanl\u0131\u011f\u0131n\u0131 ve bask\u0131 uygunlu\u011funu bozar. Bu nedenle, \u00fcr\u00fcn s\u0131zd\u0131rmaz, kurutulmu\u015f, argonla doldurulmu\u015f veya vakumlu kaplarda paketlenmelidir.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Premium s\u0131n\u0131f \u00fcr\u00fcnleri kullananlar i\u00e7in, <strong>ikincil i\u015fleme<\/strong> Se\u00e7enekler aras\u0131nda, d\u00fczensiz par\u00e7ac\u0131klar\u0131 yuvarlakla\u015ft\u0131rmaya y\u00f6nelik plazma sferoidizasyonu ve belirli makine platformlar\u0131 i\u00e7in \u00f6zel dar da\u011f\u0131l\u0131mlara g\u00f6re s\u0131n\u0131fland\u0131rma yer almaktad\u0131r. Ergitme-atomizasyon-s\u0131n\u0131fland\u0131rma i\u015flemlerini entegre etmi\u015f ve \u015firket i\u00e7i ekipman yelpazesi geni\u015f olan tedarik\u00e7iler, <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/what-is-plasma-rotating-electrode-process-prep\/\" rel=\"noreferrer noopener\">PREP toz \u00fcretim teknolojisi<\/a> Kaba \u00f6zel fraksiyonlar i\u00e7in, sadece katalogda yer alan kesim se\u00e7eneklerini sunmak yerine, bu a\u015famalar\u0131 m\u00fc\u015fterinin prosesine g\u00f6re uyarlayabiliriz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sekt\u00f6re G\u00f6re Uygulamalar: Yap\u0131sal, Termal ve A\u015f\u0131nma Bile\u015fenleri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">4340 toz uygulamalar\u0131, y\u00fcksek statik mukavemet, yorulma direnci ve a\u015f\u0131nma direncinin bir araya geldi\u011fi alanlarda yo\u011funla\u015fmaktad\u0131r. Tipik kullan\u0131m alanlar\u0131 a\u015fa\u011f\u0131da ve tedarik\u00e7inin <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/applications\/\" rel=\"noreferrer noopener\">uygulamalar<\/a> sayfa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sekt\u00f6rlere G\u00f6re Tipik Uygulamalar<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">End\u00fcstri<\/th><th class=\"has-text-align-left\" data-align=\"left\">Temsili Par\u00e7alar<\/th><th class=\"has-text-align-left\" data-align=\"left\">Neden 4340 Tozu?<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Havac\u0131l\u0131k ve Uzay<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u0130ni\u015f tak\u0131m\u0131 ba\u011flant\u0131 par\u00e7alar\u0131, akt\u00fcat\u00f6r t\u0131rnaklar\u0131, yap\u0131sal pimler<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ultra y\u00fcksek mukavemet, derin sertle\u015febilirlik<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Otomotiv ve motor sporlar\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">Di\u015fliler, \u015faftlar, tahrik sistemi bile\u015fenleri, s\u00fcspansiyon ba\u011flant\u0131 noktalar\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">Yorgunluk mukavemeti, a\u015f\u0131nma direnci<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Petrol ve gaz<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kuyu i\u00e7i alet g\u00f6vdeleri, vana bile\u015fenleri, ba\u011flant\u0131 elemanlar\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">A\u011f\u0131r kesitlerde mukavemet, tokluk<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Kal\u0131p ve aletler<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kesici u\u00e7lar, z\u0131mbalar, a\u015f\u0131nma plakalar\u0131, konformal so\u011futmal\u0131 kal\u0131plar<\/td><td class=\"has-text-align-left\" data-align=\"left\">Y\u00fcksek s\u0131cakl\u0131kta sertlik: 45-50 HRC<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Savunma ve ate\u015fli silahlar<\/td><td class=\"has-text-align-left\" data-align=\"left\">MIM teknolojisiyle \u00fcretilen makat bile\u015fenleri ve k\u00fc\u00e7\u00fck silah par\u00e7alar\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kan\u0131tlanm\u0131\u015f m\u00fchimmat miras\u0131, MIM\u2019in ekonomik avantajlar\u0131<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">End\u00fcstriyel makineler<\/td><td class=\"has-text-align-left\" data-align=\"left\">Hidrolik bile\u015fenler, ba\u011flant\u0131 par\u00e7alar\u0131, onar\u0131m kaplamalar\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">A\u015f\u0131nm\u0131\u015f \u015faftlar\u0131n ve y\u00fczeylerin DED ile onar\u0131m\u0131<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Havac\u0131l\u0131k ve Uzay<\/strong> h\u00e2l\u00e2 kalite standard\u0131 olarak kabul edilmektedir. Bask\u0131l\u0131 ve DED ile onar\u0131lm\u0131\u015f 4340 ba\u011flant\u0131 par\u00e7alar\u0131, kulaklar ve pimler, ala\u015f\u0131m\u0131n 1.500+ MPa mukavemeti kullan\u0131\u015fl\u0131 toklukla bir arada sa\u011flama \u00f6zelli\u011finden yararlan\u0131r; ayr\u0131ca bu d\u00f6vme malzemenin y\u00fczy\u0131ll\u0131k hizmet verileri, sertifikasyon s\u00fcrecindeki tart\u0131\u015fmalar\u0131 k\u0131salt\u0131r. \u0130ni\u015f tak\u0131m\u0131 ve akt\u00fcat\u00f6r bile\u015fenlerinin DED ile onar\u0131m\u0131, 4340 kaplama katmanlar\u0131n\u0131n a\u015f\u0131nm\u0131\u015f delikleri ve muylular\u0131 yeniledi\u011fi, yerle\u015fik bir bak\u0131m uygulamas\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Otomotiv ve motor sporlar\u0131<\/strong> Y\u00fcksek sertlikteki malzemelerin i\u015flenmesini ortadan kald\u0131ran bask\u0131 yoluyla elde edilen \u201cner-net\u201d \u015fekillerin kullan\u0131ld\u0131\u011f\u0131 durumlarda ve s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f montajlar\u0131n ileri-geri hareketli sistemlerde k\u00fctleyi azaltt\u0131\u011f\u0131 durumlarda, di\u015fliler, \u015faftlar ve tahrik sistemi bile\u015fenleri i\u00e7in toz kal\u0131plama y\u00f6ntemlerini kullan\u0131n. MIM y\u00f6ntemiyle \u00fcretilen 4340 par\u00e7alar\u0131, elektrikli aletlerden \u015fanz\u0131man bile\u015fenlerine kadar geni\u015f bir yelpazede hacimli uygulamalarda kullan\u0131lmaktad\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Petrol ve gaz<\/strong> kesit boyunca mukavemet de\u011ferleri: Kuyu i\u00e7i alet g\u00f6vdeleri ve y\u00fcksek bas\u0131n\u00e7l\u0131 vana bile\u015fenleri, y\u00fczey sertle\u015ftirme \u00e7eliklerinin yeterli performans g\u00f6steremeyece\u011fi kadar kal\u0131n kesitlerde birle\u015fik bas\u0131n\u00e7, burulma ve darbe y\u00fcklerine maruz kal\u0131r. HIP ve Q&amp;T i\u015flemlerinden ge\u00e7irilmi\u015f 4340 \u00e7eli\u011fi, karbonlama \u00e7eliklerinin yetersiz kald\u0131\u011f\u0131 duvar kal\u0131nl\u0131klar\u0131 boyunca homojen \u00f6zellikler sunar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Aletler ve a\u015f\u0131nma par\u00e7alar\u0131<\/strong> Y\u00fcksek s\u0131cakl\u0131k ko\u015fullar\u0131ndan yararlanmak. Konformal so\u011futma kanallar\u0131 ile bas\u0131lm\u0131\u015f ve ard\u0131ndan 45-50 HRC sertli\u011fe temperlenmi\u015f kal\u0131p u\u00e7lar\u0131, z\u0131mbalar ve a\u015f\u0131nma plakalar\u0131, 4340 \u00e7eli\u011finin a\u015f\u0131nma direncini, delikli aletlerde elde edilmesi imk\u00e2ns\u0131z olan \u0131s\u0131 y\u00f6netimi ile birle\u015ftirir. Bu, s\u00f6z konusu \u00e7elik s\u0131n\u0131f\u0131 i\u00e7in en h\u0131zl\u0131 b\u00fcy\u00fcyen segmentlerden biridir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Savunma ve ate\u015fli silahlar<\/strong> MIM teknolojisi, \u00f6zellikle \u015fu uygulamalarda yayg\u0131n olarak kullan\u0131lmaktad\u0131r: k\u00fc\u00e7\u00fck silah bile\u015fenleri, ni\u015fangahlar ve mekanizma par\u00e7alar\u0131, bu ala\u015f\u0131m\u0131n silah \u00fcretimindeki k\u00f6kl\u00fc ge\u00e7mi\u015finden yararlanarak, ince kesilmi\u015f 4340 \u00e7elikten seri olarak \u00fcretilmektedir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu sekt\u00f6rlerin tamam\u0131nda malzeme se\u00e7imi mant\u0131\u011f\u0131 tutarl\u0131d\u0131r: M\u00fchendisler, tasar\u0131m\u0131n ger\u00e7ek anlamda ultra y\u00fcksek mukavemet ve tokluk gerektirdi\u011fi durumlarda, bask\u0131 veya MIM y\u00f6ntemleriyle \u00fcretilmesinin \u00e7ubuk malzemeden i\u015fleme veya d\u00f6vme i\u015flemlerine k\u0131yasla daha ekonomik oldu\u011fu geometri t\u00fcrlerinde 4340 tozunu tercih ederler.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alternatif Malzeme S\u0131n\u0131f\u0131 Se\u00e7enekleriyle Performans Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00fcksek mukavemetli \u00e7elik tozu se\u00e7mek, 4340 \u00e7eli\u011fini paslanmaz \u00e7elik, tak\u0131m \u00e7eli\u011fi ve maraging \u00e7elik alternatifleriyle kar\u015f\u0131la\u015ft\u0131rmak anlam\u0131na gelir; bu alternatiflerin her biri, mukavemet, tokluk, korozyon direnci ve i\u015fleme kolayl\u0131\u011f\u0131 a\u00e7\u0131s\u0131ndan farkl\u0131 bir dengeye g\u00f6re optimize edilmi\u015ftir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4340 ile Alternatif AM \u00c7elik Kaliteleri Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">M\u00fclkiyet<\/th><th class=\"has-text-align-left\" data-align=\"left\">4340<\/th><th class=\"has-text-align-left\" data-align=\"left\">17-4PH Paslanmaz<\/th><th class=\"has-text-align-left\" data-align=\"left\">H13 Tak\u0131m \u00c7eli\u011fi<\/th><th class=\"has-text-align-left\" data-align=\"left\">18Ni Maraging 300<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Ala\u015f\u0131m ailesi<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ni-Cr-Mo d\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ya\u011fmurla sertle\u015fen paslanmaz \u00e7elik<\/td><td class=\"has-text-align-left\" data-align=\"left\">Cr-Mo-V s\u0131cak i\u015fleme tak\u0131m \u00e7eli\u011fi<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ni-Co-Mo marajen \u00e7eli\u011fi<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u00c7ekme mukavemeti (en y\u00fcksek de\u011fer, MPa)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1860-1930<\/td><td class=\"has-text-align-left\" data-align=\"left\">1170-1310<\/td><td class=\"has-text-align-left\" data-align=\"left\">1600-1800<\/td><td class=\"has-text-align-left\" data-align=\"left\">1930-2050<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Y\u00fcksek mukavemet yan\u0131nda dayan\u0131kl\u0131l\u0131k<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u0130yi<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta d\u00fczeyde<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta d\u00fczeyde<\/td><td class=\"has-text-align-left\" data-align=\"left\">M\u00fckemmel<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Korozyon direnci<\/td><td class=\"has-text-align-left\" data-align=\"left\">Zay\u0131f (kaplama gerektirir)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u0130yi<\/td><td class=\"has-text-align-left\" data-align=\"left\">Zay\u0131f<\/td><td class=\"has-text-align-left\" data-align=\"left\">Zay\u0131f<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">LPBF s\u00fcrecinin zorlu\u011fu<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta-y\u00fcksek (\u00f6n \u0131s\u0131tma gerekli)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kolay<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta d\u00fczeyde<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kolay-orta<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Maksimum \u00e7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">~400 \u00b0C<\/td><td class=\"has-text-align-left\" data-align=\"left\">~300 \u00b0C<\/td><td class=\"has-text-align-left\" data-align=\"left\">~550 \u00b0C<\/td><td class=\"has-text-align-left\" data-align=\"left\">~400 \u00b0C<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Is\u0131l i\u015flemin karma\u015f\u0131kl\u0131\u011f\u0131<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ostenitle\u015ftirme + su verme + temperleme<\/td><td class=\"has-text-align-left\" data-align=\"left\">Tek a\u015famal\u0131 ya\u015fland\u0131rma<\/td><td class=\"has-text-align-left\" data-align=\"left\">Ostenitle\u015ftirme + \u00e7ift temperleme<\/td><td class=\"has-text-align-left\" data-align=\"left\">Tek a\u015famal\u0131 ya\u015fland\u0131rma<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">G\u00f6receli toz maliyeti<\/td><td class=\"has-text-align-left\" data-align=\"left\">D\u00fc\u015f\u00fck<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orta<\/td><td class=\"has-text-align-left\" data-align=\"left\">Y\u00fcksek<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>17-4PH paslanmaz<\/strong> kolay bir alternatiftir: 316L ile neredeyse ayn\u0131 kolayl\u0131kta bask\u0131 yap\u0131labilir, tek a\u015famal\u0131 bir ya\u015fland\u0131rma i\u015flemi gerektirir ve korozyona dayan\u0131kl\u0131d\u0131r. Ancak yakla\u015f\u0131k 1.300 MPa olan mukavemet s\u0131n\u0131r\u0131, 4340'\u0131n en y\u00fcksek de\u011ferinin tam 600 MPa alt\u0131nda oldu\u011fundan, orta d\u00fczeyde mukavemet ve korozyon direncinin yeterli oldu\u011fu ve i\u015flem basitli\u011finin \u00f6nemli oldu\u011fu durumlarda kullan\u0131l\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H13 tak\u0131m \u00e7eli\u011fi<\/strong> Kal\u0131p uygulamalar\u0131nda rekabet g\u00fcc\u00fcne sahip olan bu malzeme, y\u00fcksek s\u0131cakl\u0131kta \u00e7al\u0131\u015fan kal\u0131plar i\u00e7in \u00fcst\u00fcn s\u0131cak sertlik ve temperleme direnci sunar; al\u00fcminyum bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm kal\u0131plar\u0131 ve ekstr\u00fczyon kal\u0131plar\u0131 i\u00e7in do\u011fru se\u00e7imdir. Oda s\u0131cakl\u0131\u011f\u0131nda a\u015f\u0131nma ve yap\u0131sal y\u00fckler s\u00f6z konusu oldu\u011funda, 4340 daha d\u00fc\u015f\u00fck maliyetle ve daha kolay \u0131s\u0131l i\u015flemle ayn\u0131 mukavemeti sa\u011flar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>18Ni maraging 300<\/strong> Performans s\u0131n\u0131r\u0131 \u015fudur: 4340 ile benzer bir tepe mukavemetine sahip olmakla birlikte, \u00e7ok daha \u00fcst\u00fcn tokluk ve su verme deformasyonunu tamamen \u00f6nleyen, hatalar\u0131 telafi edici tek a\u015famal\u0131 bir ya\u015fland\u0131rma i\u015flemi sunar. Bunun bedeli ise maliyettir; maraging tozunun fiyat\u0131 4340'\u0131n birka\u00e7 kat\u0131d\u0131r, ayr\u0131ca kobalt ve nikel tedarik riskleri de s\u00f6z konusudur. Havac\u0131l\u0131k ve uzay programlar\u0131, en zorlu ba\u011flant\u0131 par\u00e7alar\u0131 i\u00e7in bunu hakl\u0131 \u00e7\u0131karmaktad\u0131r; maliyete duyarl\u0131 yap\u0131sal uygulamalarda ise varsay\u0131lan se\u00e7im 4340't\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se\u00e7im kural\u0131 net bir \u015fekilde \u00f6zetlenebilir: Korozyona dayan\u0131kl\u0131 ve orta mukavemet i\u00e7in 17-4PH\u2019yi, s\u0131cak kal\u0131plama i\u00e7in H13'\u00fc, maksimum mukavemet yan\u0131nda maksimum tokluk i\u00e7in maraging \u00e7eli\u011fini ve tasar\u0131m\u0131n en d\u00fc\u015f\u00fck malzeme maliyetiyle 1.500-1.900 MPa s\u0131n\u0131f\u0131nda mukavemet ve iyi tokluk gerektirdi\u011fi durumlarda, bununla birlikte gelen \u0131s\u0131l i\u015flem kurallar\u0131n\u0131 kabul ederek 4340'\u0131 se\u00e7in.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u015eirketimiz<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/about\/\" rel=\"noreferrer noopener\">Shanghai Truer Technology Co, Ltd<\/a> \u00c7in merkezli bir katmanl\u0131 \u00fcretim tedarik\u00e7isi olup, PREP toz \u00fcretim ekipmanlar\u0131 ile y\u00fcksek kaliteli k\u00fcresel metal tozlar\u0131n\u0131 bir arada sunmaktad\u0131r. 2009 y\u0131l\u0131nda kurulan \u015firket, hem <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/gas-atomization-powders-process\/\" rel=\"noreferrer noopener\">gaz atomizasyonu (GA)<\/a> ve nikel ala\u015f\u0131mlar\u0131, titanyum ala\u015f\u0131mlar\u0131, al\u00fcminyum ala\u015f\u0131mlar\u0131, paslanmaz \u00e7elikler, kobalt ala\u015f\u0131mlar\u0131, bak\u0131r ala\u015f\u0131mlar\u0131, d\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131 \u00e7elikler, y\u00fcksek entropili ala\u015f\u0131mlar ve \u00f6zel malzemeler alanlar\u0131nda PREP \u00fcretim kapasiteleri.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131 \u00e7elik hammadde i\u00e7in Truer, LPBF, DED, ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme ve MIM partik\u00fcl boyutlar\u0131nda 4340, 4140 ve ilgili kaliteleri tedarik etmekte olup, oksijene ve azota duyarl\u0131 yap\u0131sal uygulamalar i\u00e7in argon atomize edilmi\u015f \u00fcst\u00fcn kaliteli se\u00e7enekler sunmaktad\u0131r. Her parti, AISI s\u0131n\u0131rlar\u0131na g\u00f6re tam kimyasal bile\u015fimi, oksijen-azot i\u00e7eri\u011fini, lazer difraksiyonu ile PSD'yi, Hall ak\u0131\u015f\u0131n\u0131, g\u00f6r\u00fcnen yo\u011funlu\u011fu ve talep \u00fczerine SEM morfolojisini kapsayan bir analiz sertifikas\u0131 ile sevk edilir; bu da \u0131s\u0131l i\u015flem sertifikal\u0131 s\u00fcre\u00e7lerin gerektirdi\u011fi parti tutarl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u015eirket ayr\u0131ca havac\u0131l\u0131k, otomotiv, petrol ve gaz, kal\u0131p\u00e7\u0131l\u0131k ve end\u00fcstriyel m\u00fc\u015fteriler i\u00e7in \u00f6zel ala\u015f\u0131m geli\u015ftirme, k\u00fc\u00e7\u00fck partili prototip \u00fcretimi ve seri \u00fcretimi desteklemektedir. \u00d6nde gelen ara\u015ft\u0131rma kurumlar\u0131yla birlikte i\u015fletilen metal 3D bask\u0131 ortak inovasyon merkezi, m\u00fc\u015fterilere 4340 gibi sertle\u015ftirilebilir \u00e7elikler i\u00e7in parametre geli\u015ftirme ve i\u015flem sonras\u0131 \u0131s\u0131l i\u015flem optimizasyonu konusunda destek sa\u011flamaktad\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4340 ala\u015f\u0131ml\u0131 \u00e7elik tozunun teknik \u00f6zellikleri, numune alma veya \u00f6zel kimyasal bile\u015fim aral\u0131klar\u0131 ile ilgili sorular\u0131n\u0131z i\u00e7in, <a target=\"_blank\" href=\"https:\/\/am-material.com\/tr\/contact-us\/\" rel=\"noreferrer noopener\">ekiple ileti\u015fime ge\u00e7in<\/a> hedef PSD, oksijen s\u0131n\u0131r\u0131 ve y\u0131ll\u0131k hacim tahmini ile birlikte.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S1: 4340 ala\u015f\u0131ml\u0131 \u00e7elik tozunun tipik par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 nedir?<\/strong> C: Standart LPBF kesim boyutu 15-53 mikrondur; DED ve kaplama i\u015flemleri i\u00e7in ise 45-106 veya 53-150 mikrondur. 0-22 veya 0-38 mikron aral\u0131\u011f\u0131ndaki ince kesimler MIM i\u00e7in kullan\u0131l\u0131rken, 15-45 mikron aral\u0131\u011f\u0131 ba\u011flay\u0131c\u0131 p\u00fcsk\u00fcrtme i\u00e7in tipiktir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Soru 2: 4340 tozu hem SLM hem de DED sistemlerinde kullan\u0131labilir mi?<\/strong> C: Evet, PSD\u2019nin i\u015fleme uygun olmas\u0131 \u015fart\u0131yla: SLM\/LPBF i\u00e7in 15-53 mikron ve DED i\u00e7in daha iri kesimler. Her iki i\u015flemde de martensitik \u00e7atlamay\u0131 \u00f6nlemek amac\u0131yla ala\u015f\u0131m\u0131n sertle\u015febilirli\u011fine dikkat edilmesi, \u00f6n \u0131s\u0131tma ve \u00fcretim sonras\u0131 derhal gerilim giderme i\u015flemlerinin uygulanmas\u0131 gerekmektedir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Soru 3: 4340 tozu hangi sertifikalara sahiptir?<\/strong> C: Standart tedarik kapsam\u0131nda, AISI 4340 s\u0131n\u0131r de\u011ferlerine g\u00f6re tam kimyasal bile\u015fim bilgilerini i\u00e7eren bir analiz sertifikas\u0131, oksijen-azot i\u00e7eri\u011fi, lazer difraksiyonu ile belirlenen PSD, Hall ak\u0131\u015f h\u0131z\u0131 ve g\u00f6r\u00fcn\u00fcr yo\u011funluk yer almaktad\u0131r. Havac\u0131l\u0131k ve savunma programlar\u0131 i\u00e7in SEM morfoloji raporlar\u0131 ve atomizasyon \u0131s\u0131s\u0131 izlenebilirli\u011fi de sunulmaktad\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S4: 4340 tozu sipari\u015f etmek i\u00e7in minimum sipari\u015f miktar\u0131 (MOQ) nedir?<\/strong> C: Parametre geli\u015ftirme ve \u0131s\u0131l i\u015flem onaylama \u00e7al\u0131\u015fmalar\u0131 i\u00e7in 10-20 kg'l\u0131k numune miktarlar\u0131 temin edilebilir. \u00dcretim sipari\u015fleri genellikle 50 kg'dan ba\u015flar; 200 kg ve \u00fczeri miktarlarda ise toplu al\u0131m indirimi uygulan\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S5: 4340 tozunun bile\u015fimi \u00f6zelle\u015ftirilebilir mi?<\/strong> C: Evet. Karbon i\u00e7eri\u011fi 0,38-0,431 TP3T aral\u0131\u011f\u0131nda ayarlanabilir; d\u00fc\u015f\u00fck fosforlu ve d\u00fc\u015f\u00fck k\u00fck\u00fcrtl\u00fc \u00fcst\u00fcn kaliteli eritmeler mevcuttur; ayr\u0131ca 4140 veya 300M varyantlar\u0131 gibi ilgili kaliteler, minimum \u00fcretim miktar\u0131 ile ayn\u0131 atomizasyon platformunda \u00fcretilebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S6: 4340 toz sipari\u015fleri i\u00e7in tipik teslim s\u00fcresi ne kadard\u0131r?<\/strong> C: Standart kesimler genellikle stokta mevcuttur veya 1-2 hafta i\u00e7inde temin edilebilir. \u00d6zel kimyasal bile\u015fimler, argon atomizasyonlu \u00fcst\u00fcn kaliteli \u00fcr\u00fcnler ve b\u00fcy\u00fck hacimli sipari\u015fler ise eritme ve atomizasyon program\u0131na ba\u011fl\u0131 olarak genellikle 3-6 hafta s\u00fcrer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Quick Answer 4340 alloy steel powder is a spherical Ni-Cr-Mo low alloy steel feedstock (nominal 0.40% C, 1.8% Ni, 0.8% Cr, 0.25% Mo, balance Fe) used in laser powder bed fusion, directed energy deposition, binder jetting, and powder metallurgy to produce ultra-high-strength structural parts. In powder bed fusion systems it performs well but demands respect [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":10339,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1],"tags":[],"post_folder":[],"class_list":["post-10412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/posts\/10412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/comments?post=10412"}],"version-history":[{"count":1,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/posts\/10412\/revisions"}],"predecessor-version":[{"id":10413,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/posts\/10412\/revisions\/10413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/media\/10339"}],"wp:attachment":[{"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/media?parent=10412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/categories?post=10412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/tags?post=10412"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/am-material.com\/tr\/wp-json\/wp\/v2\/post_folder?post=10412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}