Yaya za a inganta kayan aikin inji na baƙin ƙarfe toka?
Grey cast iron shine ƙarfen ƙarfe-carbon wanda ɓangaren ɓangaren yake launin toka. Ta hanyar sarrafawar abun da aka samu da kuma tsarin karfafawa, carbon din yafi fitowa a fasalin flake graphite. Tsarin karfe mai launin ruwan toka wanda aka yi shi da ruwan toka galibi an hada shi da flake graphite, matrix karfe da iyakar hatsi eutectic.
Kasancewar zafin flake a cikin baƙin ƙarfe baƙin ƙarfe yana lalata ci gaban ƙarfe kuma yana sa baƙin ƙarfe baƙin ƙarfe wani abu mai laushi. Amma baƙin ƙarfe baƙin ƙarfe yana ɗayan kayan ƙarfe na farko da aka fi amfani da su. Gilashin baƙin ƙarfe yana da kaddarorin da yawa. Na dogon lokaci, a cikin aikin samarwa, mun taƙaita wasu matakan gama gari don inganta ƙarfin ƙarfin ƙarfin baƙin ƙarfe mai toka. A karkashin wasu yanayi, zamu iya inganta aikin yankan, sanya juriya da aikin gigicewar aikin gwal mai ruwan toka.
A ainihin aikin samar da simintin gyare-gyare, mafi yawan launin baƙin ƙarfe toka shine hypoeutectic. Sabili da haka, don inganta ƙarfin ƙarfinsa, ya kamata a yi mahimman bayanai kamar yadda ya kamata:
1) Garanti da baƙin ƙarfe baƙin ƙarfe ƙarfe yana da more kuma mafi bunkasa primary austenite dendrites a lokacin solidification
2) Rage adadin graphite eutectic kuma sanya shi a ko'ina rarraba tare da mai kyau A-type graphite
3) theara yawan ƙungiyoyin eutectic
4) Yayin canzawar eutectoid austenite, duk sun canza zuwa kyakkyawan matrix pearlite
A cikin ainihin samar da simintin gyaran ƙarfe na toka, galibi muna amfani da waɗannan matakan don cimma sakamakon da ke sama:
1) Zaɓi haɗin sinadarai mai dacewa
2) Canza tsarin cajin
3) hearfe mai narkewar ƙarfe
4) Maganin Alura
5) Gano ko ƙaramin allo
6) Maganin zafi
7) rateara yawan sanyaya yayin canzawar eutectoid
Takamaiman matakan da za'a dauka ya dogara da nau'in simintin gyaran ƙarfe na toka, kaddarorin da ake buƙata da takamaiman yanayin samarwa. Koyaya, sau da yawa ya zama dole a ɗauki matakai biyu ko sama da haka don cin nasarar aikin baƙin ƙarfe.
Post lokaci: Dec-28-2020