Carbon yana ɗaya daga cikin manyan abubuwan ƙarfe na masana'antu.Ayyukan aiki da tsarin ƙarfe an ƙaddara su ta hanyar abun ciki da rarraba carbon a cikin karfe.Tasirin carbon yana da mahimmanci musamman a cikin bakin karfe.Tasirin carbon akan tsarin bakin karfe yana bayyana ne ta fuskoki biyu.A gefe guda, carbon wani sinadari ne da ke daidaita austenite, kuma tasirinsa yana da girma (kusan sau 30 na nickel), a daya bangaren kuma, saboda yawan kusancin carbon da chromium.Babban, tare da chromium - hadadden jerin carbides.Saboda haka, dangane da ƙarfi da juriya na lalata, rawar da carbon ke cikin bakin karfe ya saba wa juna.
Gane ka'idar wannan tasirin, zamu iya zaɓar bakin karfe tare da abun ciki na carbon daban-daban dangane da buƙatun amfani daban-daban.
Misali, daidaitaccen abun ciki na chromium na nau'ikan karfe biyar na 0Crl3 ~ 4Cr13, wanda shine mafi yawan amfani da shi a cikin masana'antar kuma shine mafi ƙarancin, an saita shi a 12 ~ 14%, wato, abubuwan da carbon da chromium suna samar da chromium carbide ana la'akari dasu.Maƙasudin mahimmanci shine bayan an haɗa carbon da chromium cikin chromium carbide, abun cikin chromium a cikin ingantaccen bayani ba zai zama ƙasa da ƙaramin abun ciki na chromium na 11.7%.
Dangane da wadannan maki biyar na karfe, saboda bambancin abun ciki na carbon, ƙarfin da juriya na lalata su ma sun bambanta.A lalata juriya na 0Cr13 ~ 2Crl3 karfe ne mafi alhẽri amma ƙarfi ne m fiye da cewa na 3Crl3 da 4Cr13 karfe.Ana amfani da shi galibi don kera sassan tsarin.
Saboda yawan sinadarin carbon, nau'in karfe biyu na iya samun ƙarfi sosai kuma galibi ana amfani da su wajen kera maɓuɓɓugan ruwa, wuƙaƙe da sauran sassa waɗanda ke buƙatar ƙarfin ƙarfi da juriya.Ga wani misali, domin shawo kan lalata intergranular na 18-8 chromium-nickel bakin karfe, carbon abun ciki na karfe za a iya rage zuwa kasa da 0.03%, ko wani kashi (titanium ko niobium) tare da mafi girma affinity fiye da chromium da carbon za a iya ƙara don hana shi daga kafa carbide.Chromium, misali, a lokacin da high taurin da sa juriya ne babban bukatun, za mu iya ƙara carbon abun ciki na karfe alhãli kuwa ƙara chromium abun ciki daidai, don saduwa da bukatun na taurin da kuma ci juriya, da kuma la'akari da wasu lalata juriya, masana'antu amfani da bearings, aunawa kayayyakin aiki da ruwan wukake tare da bakin karfe 9Cr18 da 9Cr17 da carbon 9Cr18 da 9Cr17MoVCo5% kamar yadda chrome 5%, ko da yake chromium abun ciki ne high. Hakanan abun ciki na ium yana ƙaruwa daidai da haka, don haka har yanzu yana ba da garantin juriya na lalata.bukata
Gabaɗaya magana, abun cikin carbon na bakin karfe a halin yanzu da ake amfani da shi a masana'antar yana da ƙarancin ƙarancin ƙarfi.Yawancin bakin karafa suna da abun ciki na carbon daga 0.1 zuwa 0.4%, kuma ƙarfe masu jure acid suna da abun cikin carbon na 0.1 zuwa 0.2%.Bakin karfe tare da abun ciki na carbon sama da 0.4% suna da ɗan ƙaramin yanki ne kawai na jimlar adadin maki, saboda a ƙarƙashin yawancin yanayin amfani, bakin karfe koyaushe yana da juriya na lalata a matsayin manufarsu ta farko.Bugu da ƙari, ƙananan abun ciki na carbon kuma saboda wasu buƙatun tsari, kamar walda mai sauƙi da nakasar sanyi.
Lokacin aikawa: Satumba-27-2022