Dangane da bambancin yashi da aka yi amfani da shi don yin gyare-gyaren simintin gyaran gyare-gyare, ana iya raba aikin simintin yashi zuwa nau'i daban-daban, kamar su.kore yashi simintin gyare-gyare, Simintin yashi mai rufi (simintin harsashi), simintin yashi mai ƙarfi da kai da busassun yashi (ɓataccen simintin kumfa da vacuum). Wannan labarin za mu fi gabatar da hanyoyin simintin yashi guda uku masu zuwa:
Green Sand Casting
Yashi koren asali jika ne na yashi da yumbu, ba a ƙara wani sinadari ba. Yashin yashi yana matse tare kuma yana riƙe da siffarsa. Zaɓin yashi yana da alaƙa da yawan zafin jiki wanda aka zubar da ƙarfe. A yanayin zafi da ake zuba tagulla da baƙin ƙarfe, yumbu yakan daina aiki da zafi, wanda yumbu ne wanda ba ya faɗaɗawa. Don haka a maimakon haka, waɗanda ke zuba baƙin ƙarfe yawanci suna aiki da yashi silica wanda ba shi da tsada idan aka kwatanta da sauran yashi.
Yashi Shell Simintin gyaran fuska
Guduro masu ɗaure su ne na halitta ko na roba babban abin narkewa. Har ila yau, akwai resins masu sanyi, waɗanda ke amfani da abin motsa jiki maimakon zafi don warkar da abin ɗaure. Gudun binders sun shahara sosai saboda ana iya samun kaddarorin daban-daban ta hanyar haɗawa da ƙari daban-daban. Sauran fa'idodin sun haɗa da haɓaka mai kyau, ƙarancin iskar gas, kuma suna barin kyakkyawan ƙarewa akan simintin. Tsarin simintin gyare-gyaren Shell yana ba da mafi kyawun ƙarewa, mafi kyawun jure juzu'i, da mafi girman kayan aiki saboda rage lokutan zagayowar. Abubuwan da za a iya amfani da su tare da wannan tsari sune simintin ƙarfe, da aluminum da kuma tagulla. TheTsarin simintin gyare-gyaren harsashiyana samar da mafita na tanadin farashi don siffofi masu wahala, tasoshin matsa lamba, sassa masu nauyi, da simintin gyare-gyaren da ke buƙatar ƙarewar saman ƙasa.
Yin Simintin Yashi Mai Taurin Kai
"Yashi mai taurin kai" kalma ce da ta bayyana bayan masana'antar kamfuta ta amince da masu hada sinadarai. A cikin tsarin haɗewar yashi, ban da ƙara abin ɗaure, ana kuma ƙara wani wakili mai ƙarfi (hardening) wanda zai iya taurara abin ɗaure. Bayan yin gyare-gyare da gyare-gyare tare da irin wannan yashi, ba a yi amfani da magani (kamar bushewa ko busa iskar gas) don taurare ƙirar ko ginshiƙi, kuma ƙwayar ko ƙwanƙwasa na iya taurare da kanta.
Saboda ana yin ƙura a cikin ɗaki kuma ba buƙatar zafi ba, ana kiran simintin yashi mai taurin kai kuma ana kiran tsarin simintin gasa. Hanyar taurin kai za a iya raba shi zuwa guduro furan mai acid-catalyzed da phenolic guduro yashi hanya mai taurin kai, hanyar tauraruwar yashi na urethane da kuma hanyar taurin kai mai phenolic monoester.
Furan resin resin kansa tsarin simintin yashi (tsari na nobake) yana amfani da yashi mai rufi na fure don samar da simintin simintin. Bayan an haxa yashi na asali (ko yashi da aka dawo da shi), ruwa mai buɗe wuta da mai kara kuzari daidai gwargwado, sannan a cika su a cikin ainihin akwatin (ko akwatin yashi), sannan a matsa shi don ya taurare ya zama mold ko gyaggyarawa a cikin babban akwatin (ko yashi). akwatin) a dakin da zafin jiki. Sa'an nan kuma aka samar da simintin gyare-gyare ko simintin simintin, wanda ake kira akwatin gyare-gyaren sanyi mai ƙarfi (core), ko hanyar tauraruwar kai (core).
Lokacin aikawa: Nuwamba-06-2021