Suggestion 1: In order to discharge gas and vaporized residue during pouring of foam mold, the straight runner should be high enough to provide enough indenter for metal liquid to promote stable and rapid filling of metal liquid flow and ensure the clear appearance of the casting. In order to ensure that there is enough flow to make it flow from time to time during the pouring process, and to set up the starting head soon, larger pouring cup can be used; The straight runner is made hollow to reduce gas backflow and increase the pressure head at the beginning of pouring.
Suggestion 2: The stability of the cast can be improved by using suction negative pressure method, and the pyrolytic gasification products produced during face gasification can be removed in time. According to the size of the casting and the pyrolysis products, the method of stopping the negative pressure conditioning in the pouring process can deal with this problem well.
Pingyang Jinshi Mould Co., Ltd. specializes in the production of foam mould, more related products please pay attention to the official website www.zjjdmj.cn
