Vacuum Castings

Vacuum Casting (Matsi mara kyau wanda aka rufe simintin, Rage simintin gyare-gyare ko V) yana amfani da busasshen yashi da matsa lamba mara kyau don samar da simintin simintin. Vacuum korau matsa lamba simintin nau'in busassun yashi simintin gyare-gyare kuma yana buƙatar amfani da kayan aikin cire iska don fitar da iskar da ke cikin simintin simintin, sannan a yi amfani da bambancin matsa lamba tsakanin ciki da wajen ƙirar don rufe fim ɗin filastik mai zafi akan alamu da samfuri. Samfurin simintin gyare-gyaren zai zama mai ƙarfi da zai iya jure narkakken ƙarfe yayin yin simintin. Bayan samun yumbun simintin, cika akwatin yashi da busasshiyar yashi ba tare da ɗaure ba, sannan a rufe saman saman yashin ɗin tare da fim ɗin filastik, sannan a saka injin don sanya yashin ya yi ƙarfi da ƙarfi. Bayan haka, cire mold, sanya ginshiƙan yashi, rufe ƙirar don yin komai a shirye don zubawa. A ƙarshe, ana samun simintin gyare-gyaren bayan an sanyaya narkakken ƙarfe da ƙarfafa.