Ukusebenza kwepuleti lensimbi engagqwali: ukumelana nokugqwala

Insimbi engagqwali inokumelana nokugqwala okuvamile okufana nengxubevange ye-nickel-chromium engazinzile 304. Ukushisa isikhathi eside ebangeni lokushisa kwamadigri e-chromium carbide kungase kuthinte ama-alloys 321 no-347 emithonjeni yezindaba elimazayo. Ikakhulukazi esetshenziswa ekusetshenzisweni kokushisa okuphezulu, impahla iyadingeka ukuze ibe nokumelana okuqinile kokuzwela ukuvimbela ukugqwala kwe-intergranular emazingeni okushisa aphansi.

ukumelana nokushisa okuphezulu kwe-oxidation

Amapuleti ensimbi engagqwali amelana ne-oxidation yezinga lokushisa eliphezulu, kodwa izinga le-oxidation lizothintwa izici ezingokwemvelo ezifana nendawo yokuchayeka kanye nokuma komkhiqizo.

izakhiwo zomzimba

I-coefficient yokudlulisa ukushisa isiyonke yensimbi incike kwezinye izici ngaphandle kokusebenza okushisayo kwensimbi. Ezimweni eziningi, i-coefficient yokushisa ukushisa kwefilimu, isikali se-oxide kanye nesimo esiphezulu sensimbi. Insimbi engagqwali igcina indawo engaphezulu ihlanzekile, ngakho-ke iqhuba ukushisa kangcono kunezinye izinsimbi ezinokusebenza okuphezulu kwe-thermal. I-Liaocheng Suntory Stainless Steel Regulations 8. Amazinga Obuchwepheshe Ezingcwecwe Zensimbi Engagqwali Amapuleti ensimbi engagqwali aqine kakhulu amelana nokugqwala okuhle kakhulu, ukugoba ukusebenza, ukuqina kwezingxenye ezishiselwe, kanye nokusebenza kwesigxivizo sezingxenye ezishiselwe nezindlela zazo zokukhiqiza. Ngokuqondile, equkethe i-C: 0.02% noma ngaphansi, N: 0.02% noma ngaphansi, Cr: 11% noma ngaphezulu nangaphansi kuka-17%, ngokufanele equkethe i-Si, Mn, P, S, Al, Ni, futhi eyanelisayo 12≤Cr Mo 1.5Si≤17 . Shisisa ipuleti lensimbi engagqwali nge-1≤Ni 30(CN) 0.5(Mn Cu)≤4, Cr 0.5(Ni Cu) 3.3Mo≥16.0, 0.006≤CN≤0.030 ukuya ku-850～1250℃℃ noma izinga lokushisa elipholisayo/elipholile. Ngale ndlela, ingaba ipuleti lensimbi engagqwali enamandla amakhulu, isakhiwo sayo siqukethe ivolumu ye-martensite engaphezu kuka-12%, inamandla amakhulu angaphezu kuka-730MPa, ukumelana nokugqwala nokusebenza kokugoba, futhi inokuqina okuhle kakhulu endaweni ethinteke ukushisa okushisela. Ukusetshenziswa okuphindaphindiwe kwe-Mo, B, njll. kungathuthukisa kakhulu ukusebenza kwesitembu sezingxenye ezishiselwe.

Amalangabi omoya-mpilo negesi awakwazi ukusika insimbi engagqwali ngoba insimbi engagqwali ayifakwa kalula i-oxidized.