Umehluko phakathi kuka-304 no-321 insimbi engagqwali
Umehluko omkhulu phakathi kwe-304 ne-321 insimbi engagqwali ukuthi i-304 ayinayo i-Ti, futhi i-321 iqukethe i-Ti. I-Ti ingagwema ukuzwela kwensimbi engagqwali. Ngamafuphi, kuwukuthuthukisa impilo yesevisi yensimbi engagqwali ekusebenzeni kokushisa okuphezulu. Okusho ukuthi, endaweni yokushisa ephezulu, ipuleti lensimbi engagqwali engama-321 lifaneleka Kakhulu kunepuleti lensimbi engama-304. Kokubili okungu-304 no-321 kuyizinsimbi ezingenasici ze-austenitic, futhi ukubukeka kwazo nokusebenza komzimba kufana kakhulu, kunomehluko omncane kuphela ekwakhiweni kwamakhemikhali.
Okokuqala, insimbi engagqwali engu-321 iyadingeka ukuqukatha inani elincane le-titanium (Ti) element (ngokwezinkambiso ze-ASTMA182-2008, okuqukethwe kwayo kwe-Ti akufanele kube ngaphansi kwezikhathi ezi-5 kokuqukethwe kwekhabhoni (C), kodwa kungabi ngaphansi kuka-0.7 % Qaphela, 304 kanye 321 Okuqukethwe kwekhabhoni (C) kungu-0.08%), kuyilapho u-304 engenayo i-titanium (Ti).
Okwesibili, izidingo zokuqukethwe kwe-nickel (Ni) zihluke kancane, u-304 uphakathi kuka-8% no-11%, kanti u-321 uphakathi kuka-9% no-12%.
Okwesithathu, izidingo zokuqukethwe kwe-chromium (Cr) zihlukile, u-304 uphakathi kuka-18% no-20%, kanti u-321 uphakathi kuka-17% no-19%.
Isikhathi sokuthumela: Jan-19-2020