Daga cikin hanyoyin simintin gyare-gyare daban-daban, bakin karfe galibi ana yin su ta hanyar saka hannun jari koɓataccen tsarin simintin kakin zuma, saboda yana da daidaito mafi girma kuma shi ya sa ana kuma kiran simintin saka hannun jari daidai simintin.
Bakin karfe shine takaitaccen bakin karfe da juriya acid. Ana kiransa bakin karfe wanda ke da juriya ga raunanan kafofin watsa labarai kamar iska, tururi, da ruwa. Karfe lalata ana kiransa karfe mai jurewa acid.
Saboda bambanci a cikin sinadaran abun da ke ciki tsakanin talakawa bakin karfe da acid-resistant karfe, su lalata juriya ne daban-daban. Bakin karfe na yau da kullun baya juriya ga lalatawar kafofin watsa labarai na sinadarai, yayin da karfe mai juriya na acid gabaɗaya baya lalacewa. Kalmar “Bakin Karfe” ba wai kawai tana nufin nau’in bakin karfe guda ɗaya ba ne, amma kuma tana nufin sama da baƙin ƙarfe na masana’antu fiye da ɗari. Kowane bakin karfe da aka haɓaka yana da kyakkyawan aiki a cikin takamaiman filin aikace-aikacen sa.
Bakin karfe sau da yawa ana raba zuwa martensitic bakin karfe, ferritic bakin karfe, austenitic bakin karfe,austenitic-ferritic (duplex) bakin karfeda hazo hardening bakin karfe bisa ga yanayin microstructure. Bugu da kari, bisa ga sinadaran abun da ke ciki, shi za a iya raba zuwa chromium bakin karfe, chromium nickel bakin karfe da chromium manganese nitrogen bakin karfe, da dai sauransu.
A cikin samar da simintin gyare-gyare, yawancin simintin bakin karfe ana kammala su ta hanyar zuba jari. Filayen simintin gyare-gyaren bakin karfe da aka samar ta hanyar zuba jari ya fi santsi kuma daidaiton girman yana da sauƙin sarrafawa. Hakika, kudin nazuba jari simintin bakin karfe sassayana da inganci idan aka kwatanta da sauran matakai da kayan aiki.
Simintin saka hannun jari, wanda kuma ake kira simintin simintin gyare-gyare ko ɓataccen simintin kakin zuma, ana amfani da shi sosai saboda yana ba da simintin simintin gyare-gyare tare da cikakkun bayanai masu kyau da za a kera su cikin rahusa. Tsarin ya haɗa da samar da simintin ƙarfe ta amfani da gyaggyarawa da aka yi daga ƙirar kakin zuma. Matakan da ke cikin tsarin ko simintin kakin zuma da aka rasa sune:
• Ƙirƙirar ƙirar kakin zuma ko kwafi
• Sanya ƙirar kakin zuma
• Saka hannun jari na kakin zuma
• Cire samfurin kakin zuma ta hanyar kona shi (cikin tanderun ko a cikin ruwan zafi) don ƙirƙirar mold.
• Ƙaddamar da narkakkar ƙarfe a zuba a cikin ƙura
• sanyaya da ƙarfi
• Cire sprue daga simintin gyaran kafa
• Kammala da goge ƙãre simintin saka hannun jari
Lokacin aikawa: Janairu-06-2021