Ana samun simintin simintin gyare-gyare ta hanyar zuba narkakkar baƙin ƙarfe tare da wani nau'in sinadari a cikin farar babura sannan a bi da shi ta hanyar cirewa. Graphite a cikin simintin ƙarfe na simintin gyare-gyaren yana da yawa kuma wani lokacin ƙaramin adadin pellets ne. Babban tsarin matrix na simintin simintin gyare-gyaren malleable shine ferrite da pearlite. Dangane da yanayin jiyya na zafi daban-daban, za a iya raba baƙin ƙarfe mai yuwuwa zuwa graphitized annealing malleable malleable iron iron da decarburization annealing malleable simintin ƙarfe.
Matsakaicin yanayin zafin jiki na yau da kullun na simintin ƙarfe maras nauyi yana kusa da na simintin ƙarfe na nodular tare da matrix iri ɗaya. Ƙarƙashin ƙananan yanayin zafi, tasirin tauri da yankan aikin simintin ƙarfe mai yuwuwa sun fi na simintin simintin gyare-gyaren nodular. Ana amfani da simintin gyare-gyaren simintin ƙarfe a ko'ina a cikin gine-gine, motoci, tarakta, injinan noma da sauran filayen. Malleable baƙin ƙarfe simintin gyare-gyare sau da yawa ana amfani da simintin bututu sadarwa, yi fasteners, gwiwar hannu, tees, bawul jikin, wrenches, jack bawo, leaf spring goyon bayan, brackets, axle gidaje, injin haɗa sanduna, rocker makamai, da dai sauransu The zafi jiyya na malleable simintin gyaran kafa. ƙarfe yafi haɗa da graphitization annealing da decarburization annealing.
Abubuwan Karfe Mai Malleable
1. Kayayyakin Injini
Matsakaicin ƙarfin yawan amfanin ƙasa zuwa ƙarfin juzu'in simintin ƙarfe mai yuwuwa yana kusa da na ƙarfe mai niƙa ball, amma yana da kusan 60% ~ 80% sama da na carbon karfe. Ƙarfin simintin gyare-gyare ya fi dacewa da aiki a ƙananan zafin jiki fiye da baƙin ƙarfe mai niƙa.
2. Tsari Tsari
Saboda abun ciki na carbon da silica na simintin simintin malleable ba su da ƙasa, matakin eutectoid ƙarami ne, kuma simintin simintin yana yin crystallizes bisa ga tsarin metastable, aikin simintin ƙarfe na simintin ƙarfe mara kyau ba shi da kyau, kuma simintin yana da haɗari ga lahani. kamar gazawar zuba, raguwar rami, raguwar porosity, da fasa. Don hana waɗannan lahani, ana buƙatar ɗaukar matakan kamar ƙara yawan zafin jiki, masu tseren hanya, ƙara yawan matsi mai ƙarfi, ƙara tashi, sanya ƙarfe mai sanyi, da haɓaka haɓakar gyare-gyaren yashi da babban yashi yayin zayyana tsarin simintin.
3. Machining Performance
Ƙarfin simintin gyare-gyare na Ferritic yana da ƙarancin taurinsa, kuma yanke aikinsa ya fi simintin ƙarfe mai launin toka da ƙarfe mai yankewa kyauta. Don haka, ƙarfen simintin gyare-gyaren simintin gyare-gyaren abu ne tare da mafi kyawun aiki a tsakanin ƙarfe-carbon gami. Ƙarfin simintin gyare-gyaren lu'u-lu'u yana da taurin mafi girma da ɗan ƙaramin aikin yankewa.
4. Aikin walda
Baƙar fata baƙin ƙarfe baƙin ƙarfe simintin ƙarfe da simintin simintin gyare-gyaren lu'u-lu'u gabaɗaya ba su dace da walƙiya ba, saboda za a samar da fararen bakunan masu karyewa a yankin walda. Farin bakin zai fashe a ƙarƙashin damuwa na walda. Don simintin gyare-gyaren da ke ɗaukar ɗan ƙaramin ƙarfi, lanƙwasa, da nauyin tasiri, ko kuma galibi ana amfani da su don ɗaukar matsawa da ƙarami, idan ana buƙatar walda, ana buƙatar dumama simintin kafin walda, kuma ana buƙatar adana zafi da jinkirin sanyaya bayan walda. Lokacin da ya cancanta, ana buƙatar sake sakewa don kawar da siminti da damuwa a kusa da walda. Koyaya, simintin gyare-gyaren farar ƙwanƙwasa yana da kyakkyawan aikin walda, don haka ana kiranta baƙin ƙarfe mai yuwuwar walda.
5. Resistance Abrasion
Juriya na simintin simintin gyare-gyaren lu'u-lu'u ya fi na karfen carbon na yau da kullun. Sabili da haka, ƙarfe na simintin malleable pearlite ya dace da sassan simintin gyare-gyare waɗanda ke da takamaiman buƙatu don ƙarfi da juriya. Ta hanyar kashe maganin zafi, taurin simintin ƙarfe mai yuwuwa zai iya kaiwa 60 HRC, kuma juriyar sa na iya zama daidai da na ƙaramin ƙarfe. Koyaya, simintin simintin gyare-gyaren ferritic bai dace da sassa masu jure lalacewa ba.
6. Juriya mai zafi
Juriya na zafi na simintin ƙarfe na simintin ƙarfe da baƙin ƙarfe na pearlite malleable ya fi ƙarfe simintin simintin gyare-gyare da ƙarfe carbon ƙarfe, kuma juriyawar zafi na baƙin ƙarfe malleable na simintin ƙarfe ya fi na pearlite malleable simintin ƙarfe.
7. Shukewar Girgizawa
Saboda tasirin siffar graphite, ƙarfen simintin gyare-gyare yana da ƙarancin girgiza fiye da baƙin ƙarfe mai launin toka kuma ya fi ƙarfe simintin ƙarfe da simintin ƙarfe. Karkashin danniya, aikin damping na ferritic malleable simintin ƙarfe ya kusan daidai da na simintin simintin simintin gyare-gyare na spheroidal, amma a ƙarƙashin matsanancin damuwa, aikin damping na simintin ƙarfe na simintin ƙarfe ya kusan sau 3 na simintin ƙarfe da kuma sau 2 na na simintin ƙarfe. ductile jefa baƙin ƙarfe.
Lokacin aikawa: Maris-04-2021