{"id":10414,"date":"2026-08-10T16:49:01","date_gmt":"2026-08-10T08:49:01","guid":{"rendered":"https:\/\/am-material.com\/?p=10414"},"modified":"2026-07-21T17:05:23","modified_gmt":"2026-07-21T09:05:23","slug":"how-to-optimize-haynes-188-cobalt-alloy-powder-processing-parameters-for-lpbf","status":"publish","type":"post","link":"https:\/\/am-material.com\/tr\/news\/how-to-optimize-haynes-188-cobalt-alloy-powder-processing-parameters-for-lpbf\/","title":{"rendered":"LPBF i\u00e7in Haynes 188 Kobalt Ala\u015f\u0131ml\u0131 Toz \u0130\u015fleme Parametrelerinin Nas\u0131l Optimize Edilece\u011fi"},"content":{"rendered":"

H\u0131zl\u0131 Cevap<\/h2>\n\n\n\n

Haynes 188 kobalt ala\u015f\u0131m\u0131 tozu<\/strong> Bu \u00fcr\u00fcn, 1095 \u00b0C (2000 \u00b0F)\u2018ye kadar oksitleyici ortamlara dayanmas\u0131 gereken bile\u015fenlerin lazer toz yata\u011f\u0131 f\u00fczyonu ve y\u00f6nlendirilmi\u015f enerji biriktirme y\u00f6ntemleriyle \u00fcretimi i\u00e7in tasarlanm\u0131\u015f k\u00fcresel bir Co-Ni-Cr-W s\u00fcperala\u015f\u0131m hammaddesidir (UNS R30188). Bu malzemenin ay\u0131rt edici \u00f6zelli\u011fi, koruyucu krom oksit tabakas\u0131n\u0131n yap\u0131\u015fmas\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131ran ve ala\u015f\u0131ma a\u015f\u0131r\u0131 s\u0131cakl\u0131klarda \u00e7o\u011fu nikel s\u00fcper ala\u015f\u0131m\u0131ndan daha \u00fcst\u00fcn oksidasyon direnci sa\u011flayan az miktarda lantan ilavesidir (0,02-0,12%). LPBF parametrelerinin optimize edilmesi, toz kalitesiyle ba\u015flar: 15-53 mikron PSD (D50 yakla\u015f\u0131k 35 mikron), %'nin \u00fczerinde k\u00fcresellik, a\u011f\u0131rl\u0131k\u00e7a %0,04'\u00fcn alt\u0131nda oksijen ve 18 s\/50 g'nin alt\u0131nda Hall ak\u0131\u015f\u0131 belirtilmelidir. 400 W s\u0131n\u0131f\u0131 makinelerde Haynes 188, 250-350 W lazer g\u00fcc\u00fc, 900-1200 mm\/s tarama h\u0131z\u0131, 0,10-0,12 mm tarama aral\u0131\u011f\u0131 ve 30-40 mikron katman kal\u0131nl\u0131\u011f\u0131 ko\u015fullar\u0131nda >99,5% yo\u011funlu\u011fa ula\u015f\u0131r; bu, yakla\u015f\u0131k 60-90 J\/mm\u00b3 hacimsel enerji yo\u011funlu\u011funa kar\u015f\u0131l\u0131k gelir ve ala\u015f\u0131m\u0131n yo\u011funlu\u011fu ve termal davran\u0131\u015f\u0131 nedeniyle al\u00fcminyum ala\u015f\u0131mlar\u0131ndan daha y\u00fcksektir. 150-200 \u00b0C'lik bask\u0131 plakas\u0131 \u00f6n \u0131s\u0131tmas\u0131, bu y\u00fcksek mukavemetli ala\u015f\u0131mda kal\u0131nt\u0131 gerilimi s\u0131n\u0131rlar; par\u00e7alar\u0131n tam s\u00fcneklik ve s\u00fcnme performans\u0131 kazanabilmesi i\u00e7in 1150-1200 \u00b0C'de bask\u0131 sonras\u0131 \u00e7\u00f6z\u00fcc\u00fc tavlama ve ard\u0131ndan h\u0131zl\u0131 so\u011futma gereklidir. Al\u0131c\u0131lar, kimyasal bile\u015fim (\u00f6zellikle lantan i\u00e7eri\u011fi), oksijen, PSD ve ak\u0131\u015f \u00f6zellikleri i\u00e7in parti sertifikalar\u0131n\u0131 do\u011frulamal\u0131 ve tedarik\u00e7inin reaktif La ilavesini korumak amac\u0131yla argon alt\u0131nda atomizasyon i\u015flemi uygulad\u0131\u011f\u0131n\u0131 teyit etmelidir.<\/p>\n\n\n\n

Haynes 188 Kobalt Ala\u015f\u0131ml\u0131 Toz Nedir ve Malzemenin Avantajlar\u0131 Nelerdir?<\/h2>\n\n\n\n

Haynes 188 kobalt ala\u015f\u0131m\u0131 tozu<\/strong> Bu, \u015fimdiye kadar piyasaya s\u00fcr\u00fclen en oksidasyona dayan\u0131kl\u0131 y\u00fcksek s\u0131cakl\u0131k ala\u015f\u0131mlar\u0131ndan birinin katmanl\u0131 \u00fcretim ve toz metalurjisi formudur. Haynes International taraf\u0131ndan geli\u015ftirilen ve UNS R30188 olarak standartla\u015ft\u0131r\u0131lan bu ala\u015f\u0131m, AMS 5608 (levha) ve AMS 5772 (\u00e7ubuk ve d\u00f6vme) dahil olmak \u00fczere d\u00f6vme \u00f6zelliklerine sahiptir. Bu ala\u015f\u0131m, tungsten kat\u0131 \u00e7\u00f6zeltisiyle g\u00fc\u00e7lendirilmi\u015f ve eser miktarda lantan ile rafine edilmi\u015f bir kobalt bazl\u0131 s\u00fcper ala\u015f\u0131md\u0131r. D\u00f6vme formunda, jet motorundaki en s\u0131cak ve en oksitleyici b\u00f6lgeler olan gaz t\u00fcrbini yanma odalar\u0131, ge\u00e7i\u015f kanallar\u0131 ve art yak\u0131c\u0131 bile\u015fenlerinde on y\u0131llard\u0131r kullan\u0131lmaktad\u0131r.<\/p>\n\n\n\n

\u015eu ailenin i\u00e7inde kobalt ala\u015f\u0131ml\u0131 tozlar<\/a> Katmanl\u0131 imalat i\u00e7in tedarik edilen Haynes 188, a\u015f\u0131r\u0131 s\u0131cakl\u0131k uygulamalar\u0131 alan\u0131nda kendine \u00f6zg\u00fc bir ni\u015f olu\u015fturmaktad\u0131r. ASTM F75 gibi CoCrMo kaliteleri a\u015f\u0131nma ve biyomedikal uygulamalarda bask\u0131n konumdad\u0131r ve Stellite ala\u015f\u0131mlar\u0131 a\u015f\u0131nd\u0131r\u0131c\u0131 a\u015f\u0131nmaya kar\u015f\u0131 diren\u00e7 g\u00f6sterir; ancak bunlar\u0131n hi\u00e7biri, oksitleyici gaz ak\u0131mlar\u0131nda 1000 \u00b0C\u2019nin \u00fczerindeki s\u0131cakl\u0131klara uzun s\u00fcre maruz kald\u0131\u011f\u0131nda dayanamaz. Haynes 188 ise buna dayanabilir; bu nedenle havac\u0131l\u0131k ve end\u00fcstriyel gaz t\u00fcrbini programlar\u0131nda, bas\u0131l\u0131 yanma odas\u0131 ve s\u0131cak gaz yolu donan\u0131m\u0131 i\u00e7in bu malzeme tercih edilmektedir.<\/p>\n\n\n\n

Haynes 188 tozuna olan talebi art\u0131ran maddi avantajlar \u015funlard\u0131r:<\/p>\n\n\n\n