Polyurethane ridaya (Vacuum ridaya)

Vacuum casting waa ikhtiyaar aad u fiican oo loogu talagalay wax soo saar mug yar oo ka kooban toban ilaa dhowr boqol oo qaybood. Waxay ku lug leedahay dhisida sayid iyo silikoon silsilad ah oo loogu talagalay qaybta qaybta polyurethane isku mid ah, Qalabka qaybta ridaya waxaa lagu dooran karaa caagag kala duwan oo adag (ABS-jecel, PC-jecel, POM-jecel, iwm) iyo caag ( Shore A 35 ~ Shore A 90). Polymer badan oo kala duwan ayaa ogolaanaya in midabka lagu daro si loo daboolo shuruudaha midabkaaga.

Celcelis ahaan, nolosha cimriga silikoonku waa qiyaastii 15 ~ 20 PCS waana ku kala duwan yahay iyadoo ku saleysan joomatari iyo sheyga qaybta loo isticmaalay.