Grey Cast Iron Investment Samfur

OEM al'ada launin toka simintin gyare-gyaren samar da daidai batattu zuba jari da kuma CNC machining.

Godiya ga sauƙi na mashin ɗin, ƙarfin matsawa mai ƙarfi, mafi kyawun yanayin zafi da ingantaccen ɗaukar girgiza, baƙin ƙarfe mai launin toka yana ɗaya daga cikin ƙarfen simintin da aka fi amfani da shi na dogon lokaci, har ma a cikin samar da masana'antu na yanzu. Abubuwan da ke cikin Carbon ya kasance mafi mahimmanci ga ƙarfe mai launin toka (yawanci 2% zuwa 4%) don ƙirƙirar ƙarfin ƙarfi da injina. Lokacin da narkakken simintin ƙarfe yana ƙarfafa wasu daga cikin carbon da ke hazo a matsayin graphite, suna yin ƙanƙanta, flakes marasa tsari a cikin tsarin kristal na ƙarfe wanda ke haɓaka kyawawan kaddarorin simintin ƙarfe, flakes ɗin suna rushe tsarin crystal wanda ke haifar da sifar sifa ta ƙarfe.

Ƙarfin simintin gyare-gyare na ƙarfe mai launin toka yana haifar da babban ƙarfi. A baya, babbar hanyar inganta aikin ƙarfen simintin launin toka shine allura. A cikin 'yan shekarun nan, babban hanyar da ake bi a yanzu ita ce mayar da hankali kan hadawa, kuma don inganta aikin simintin gyare-gyare, yawancin masana'antun ƙarfe masu launin toka suna amfani da simintin ƙarfe tare da mafi girman carbon daidai. Wannan yana da mahimmanci musamman ga ƙananan simintin ƙarfe. Sabili da haka, baƙin ƙarfe mai launin toka ya dace da kayan da za a samar da sassan simintin ƙarfe na toshe injin, gidaje na injina, tushe na injin, ma'aunin nauyi, sassan murhu, sassan tukunyar jirgi, harsashi na famfo da sauransu.

Simintin ƙarfe, galibi gami da baƙin ƙarfe simintin toka da baƙin ƙarfe (nodular) simintin ƙarfe galibi ana amfani da su don yin simintin ta hanyoyinyashi simintin gyare-gyare, Simintin gyare-gyaren harsashi, simintin yashi mai rufi ko asarar kumfa. Koyaya, don wasu yanayi na musamman, ana kuma amfani da tsarin simintin saka hannun jarin da aka rasa saboda kyawun samansu da daidaito mafi girma. A RMC, muna kuma da tha ikon simintin ƙarfe baƙin ƙarfe da ductile damadaidaicin asarar kakin saka hannun jariamfani da silica sol da gilashin ruwa don ginin harsashi.

Lokacin da baƙin ƙarfe ya yi sanyi sannu a hankali, simintin yana raguwa zuwa ƙarfe da carbon a cikin nau'i na graphite wanda ake kira graphitization. Karfe inda yawancin siminti ya lalace ta hanyar graphitization ana kiransa ƙarfen simintin toka. Bakin ƙarfe wanda ba a yi graphitization ba, i. e, duk carbon yana cikin sigar da aka haɗa, ana kiranta farin simintin ƙarfe. Tsarin graphitization yana buƙatar lokaci don haka, lokacin da ƙarfe na simintin ruwa ya yi sanyi da sauri, farin simintin ƙarfe zai haifar. Farin simintin ƙarfe yana da kwatankwacin kaddarorinsa da na manyan karafa na carbon. Koyaya, yana da rauni sosai kuma don haka ba a amfani dashi don sassa na tsari. Yana da amfani ga ɓangarorin da ke tattare da lalacewa. Ƙarfin ɗamara ya bambanta tsakanin 170 zuwa 345 MPa kuma yawanci kusan 240 MPa ne. Taurin yana daga 350 zuwa 500 BHN. Dangane da tsananin taurin, injin ɗin ba shi da kyau kuma ana gama shi da niƙa.

Yin simintin saka hannun jari (ko simintin kakin zuma da aka rasa) yana nufin samuwar yumbu a kusa da sifofin kakin zuma don ƙirƙirar nau'in sassa da yawa ko guda ɗaya don karɓar narkakken ƙarfe. Wannan tsari yana amfani da tsarin ƙirar ƙirar kakin da za a iya kashewa don cimma hadaddun sifofi tare da ingantaccen yanayi na musamman.s. Madaidaicin simintin saka hannun jarizai iya cimma daidaito na musamman don ƙanana da manyan sassa na simintin gyare-gyare a cikin kewayon kayan.

Don ƙirƙirar ƙirar ƙira, ƙirar kakin zuma, ko tari na alamu, ana tsoma su cikin kayan yumbu sau da yawa don gina harsashi mai kauri. Ana aiwatar da aikin de-wax sannan kuma tsarin bushewar harsashi ya biyo baya. Sannan ana samar da harsashin yumbu maras kakin zuma. Daga nan sai a zuba narkakken ƙarfe a cikin kogon harsashi na yumbu ko tari, kuma da zarar ya tabbata kuma ya sanyaya, an karye harsashin yumbun don bayyana abin da aka simintin ƙarfe na ƙarshe.