Vacuum Castings

Kuponyera Vacuum (Kuponyera Kosindikizidwa Koipa, Kuchepetsa Kupanikizika kapena Kuponya kwa V) kumagwiritsa ntchito mchenga wouma ndi kukakamiza koyipa kuti apange zisankho zoponya. Vacuum negative kuthamanga kuponyera ndi mtundu umodzi wa youma mchenga kuponyera ndipo kumafuna kugwiritsa ntchito zipangizo mpweya m'zigawo kuti atenge mpweya mkati mwa nkhungu kuponyera, ndiyeno ntchito kusiyana kuthamanga mkati ndi kunja kwa nkhungu kuphimba mkangano pulasitiki filimu pa mitundu ndi ma templates. Chikombole choponyera chidzakhala cholimba kuti chitha kupirira chitsulo chosungunula panthawi yoponya. Mukapeza nkhungu yoponyera vacuum, lembani m'bokosi la mchenga ndi mchenga wouma popanda binder, ndiyeno musindikize pamwamba pa nkhungu yamchenga ndi filimu ya pulasitiki, ndikutsatiridwa ndi vacuum kuti mchenga ukhale wolimba komanso wolimba. Pambuyo pake, chotsani nkhungu, ikani mchenga, kutseka nkhungu kuti zonse zikonzekere kutsanulira. Potsirizira pake, kuponyedwa kumapezeka pambuyo poti chitsulo chosungunula chizikhazikika ndikukhazikika.