bakin karfe ferritic
Chromium 15% zuwa 30%. Its lalata juriya, taurin da weldability karuwa tare da karuwa na chromium abun ciki, da kuma juriya ga chloride danniya lalata ne mafi alhẽri daga sauran iri bakin karfe, kamar Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28, da dai sauransu Ferritic bakin karfe yana da kyau lalata juriya da kuma chromium juriya, ta inji chromium juriya. Ana amfani dashi mafi yawa a cikin tsarin juriya na acid tare da ƙarancin damuwa kuma azaman ƙarfe na anti-oxidation. Irin wannan nau'in karfe zai iya tsayayya da lalatawar yanayi, nitric acid da gishiri bayani, kuma yana da halaye na kyakkyawan juriya mai zafi mai zafi da ƙananan haɓakar haɓakar thermal. Ana amfani da shi a cikin nitric acid da kayan masana'antar abinci, kuma ana iya amfani dashi don yin sassan da ke aiki a yanayin zafi mai zafi, kamar sassan injin turbin gas, da sauransu.

Austenitic bakin karfe
Ya ƙunshi fiye da 18% chromium, kuma ya ƙunshi kusan 8% nickel da ƙaramin adadin molybdenum, titanium, nitrogen da sauran abubuwa. Kyakkyawan aikin gabaɗaya, mai jurewa lalata ta kafofin watsa labarai daban-daban. Babban maki na austenitic bakin karfe sune 1Cr18Ni9, 0Cr19Ni9 da sauransu. Wc na 0Cr19Ni9 karfe bai wuce 0.08% ba, kuma lambar karfe tana da alamar "0" Wannan nau'in karfe yana dauke da adadi mai yawa na Ni da Cr, wanda ke sa karfe austenitic a dakin da zafin jiki. kayan aiki, irin su kwantena masu jure lalacewa da kayan aiki, bututun ƙarfe, sassan kayan aikin nitric acid, da dai sauransu, kuma ana iya amfani da su azaman babban kayan kayan ƙarfe na ƙarfe na ƙarfe na Austenitic gabaɗaya yana ɗaukar maganin maganin, wato, ƙarfe yana mai zafi zuwa 1050-1150 ° C, sa'an nan kuma mai sanyaya ruwa ko iska mai sanyi.

Austenitic-ferritic duplex bakin karfe
Yana da fa'idodin duka austenitic da ferritic bakin karfe, kuma yana da superplasticity. Austenite da ferrite kowane asusun kusan rabin bakin karfe. A cikin yanayin ƙarancin abun ciki na carbon, abun ciki na chromium (Cr) shine 18% ~ 28%, kuma abun ciki na nickel (Ni) shine 3% ~ 10%. Wasu karafa kuma suna ƙunshe da abubuwan haɗakarwa kamar su Mo, Cu, Si, Nb, Ti, da N. Wannan nau'in ƙarfe yana da halaye na nau'ikan baƙin ƙarfe na austenitic da ferritic. Idan aka kwatanta da ferrite, yana da mafi girma plasticity da taurin, babu dakin zafin jiki brittleness, muhimmanci inganta intergranular lalata juriya da waldi yi, yayin da rike da baƙin ƙarfe Jikin bakin karfe ne gaggautsa a 475 ° C, yana da high thermal watsin, kuma yana da halaye na superplasticity. Idan aka kwatanta da bakin karfe austenitic, yana da babban ƙarfi kuma yana inganta juriya sosai ga lalata intergranular da lalata damuwa na chloride. Bakin karfe Duplex yana da kyakkyawan juriyar lalata kuma shima bakin karfe ne mai ceton nickel.

Hazo Hardened Bakin Karfe
Matrix shine austenite ko martensite, kuma mafi yawan amfani da maki na hazo hardening bakin karfe ne 04Cr13Ni8Mo2Al da sauransu. Bakin karfe ne wanda za'a iya taurare (ƙarfafa) ta hanyar hazo (wanda kuma aka sani da taurin shekaru).

Martensitic bakin karfe
High ƙarfi, amma matalauta plasticity da weldability. Abubuwan da aka saba amfani da su na bakin karfe na martensitic sune 1Cr13, 3Cr13, da dai sauransu, saboda babban abun ciki na carbon, yana da ƙarfi mai ƙarfi, taurin kai da juriya, amma juriya na lalata yana da rauni kaɗan, kuma ana amfani dashi don manyan kaddarorin inji da juriya na lalata. Ana buƙatar wasu sassa na gabaɗaya, kamar maɓuɓɓugan ruwa, injin turbine, bawul ɗin latsa ruwa, da sauransu. Ana amfani da irin wannan nau'in ƙarfe bayan quenching da zafin rai. Ana buƙatar annealing bayan ƙirƙira da tambari.