Alloy simbi castings ne vacuum casting process inoita basa rakakosha munzvimbo dzakasiyana dzemaindasitiri. Vacuum-yakavharwa kuumbwa yekukanda maitiro, iyo V-maitiro ekukanda kwenguva pfupi, anoshandiswa zvakanyanya kugadzira simbi nesimbi castings ine madziro akatetepa, yakakwirira chaiyo uye yakatsetseka pamusoro. Nekudaro, iyo vacuum yekukanda maitiro haigone kushandiswa kudururira simbi masimbi ane diki madziro ukobvu, nekuti iyo yemvura simbi inozadza mugomba rekuumbwa inovimba chete neiyo static yekumanikidza musoro muV-maitiro. Zvakare, iyo V maitiro haigone kuburitsa castings inoda yakanyanya kukwirira dimension nekuda kweiyo inodzivirirwa yekumanikidza kusimba kwe mold.