Ka'idar walda

Injin narkar da zafi galibi yana amfani da mai kula da zafin jiki don sarrafa zazzabi na ƙirar kayan aiki akan farantin dumama don walda samfurin.Bayan workpiece mold kai saitin waldi zafin jiki, da Silinda saukar zuwa align da workpiece mold tare da waldi batu na samfurin, da waldi batu fara narke.Karkashin matsi na silinda, wurin walda a saman samfurin ya kai wani mataki na narkewa, silinda ya tashi, kuma yana ƙarfafa a cikin zafin jiki don samar da sarkar kwayoyin halitta don cimma manufar walda.