Menene tasirin tsarin asali daban -daban na ƙarfe akan ƙwaƙwalwar shiga?

Saurin da ferrite da ciminti ke canzawa zuwa austenite ya dogara da zafin jiki, abun da ke cikin ƙarfe, da tsarin asali.

Ƙididdigar samuwar sabbin cibiyoyin lokaci na austenite da ƙimar girma na waɗannan cibiyoyin an ƙaddara su ta asali tsarin. Ƙarin tarwatsa tsarin asali, ƙaramin tazara tsakanin barbashin ferrite da ciminti, don haka ake ƙona mahaɗin austenite. Yawan saurin haihuwa da girma. Tunda cakuda ferrite-ciminti yana haifar da austenite a iyakar jirgin rarrabuwa na waɗannan matakan, mafi kyawun tsarin asali, mafi girman jirgin rarrabuwa (farfajiya mai tasiri) na lokaci. Daɗaɗɗen nama na ainihi shine, ya fi guntu lokacin da ake buƙata don abun da ke ciki ya zama daidaituwa lokacin da zazzaɓi mai ƙarfi. Sabili da haka, yanayin tsarin asali yana da matukar mahimmanci don shigar da tauraro.

A cikin yanayin da aka saba ko kuma anneled, asalin tsarin hypoeutectoid karfe shine pearlite da ferrite kyauta, kuma saurin austenitization yana da hankali fiye da na kashewa da zafin iska (tarwatsa cakuda siminti ferrite) Don a kashe shi gaba ɗaya, na al’ada ko baƙin ƙarfe ya kamata a kashe. kuma ya yi zafi a yanayin zafin da ya fi na ƙarfe kashewa.

Wani aikin samun tsarin sihiri shine hana ƙarfe samar da babban damuwa a lokacin kashe wuta. Kamar yadda kowa ya sani, girman damuwar da ta rage a cikin baƙin ƙarfe, a tsakanin sauran abubuwan, kuma ya dogara da zafin zafin. Mafi girman zafin zafin da ake kashewa, shine mafi girman damuwar saura a cikin ƙarfe da aka kashe. Yanayin zafin da ake buƙata don tsarin ƙwanƙwasawa da zafin jiki shine mafi ƙanƙanta, don haka damuwar da ta rage bayan kashewa ita ma ita ce mafi ƙanƙanta, ta rage haɗarin kashe fashewa da zubewa. Jiyya da zafin jiki na iya haɓaka ƙarfin zuciya, don haka ya zama dole don mahimman sassan da ke buƙatar kaddarorin inji.