GAS EXHAUSTING DEVICE FOR CASTING DIE,申请号JP19870231127-传众专利搜索

GAS EXHAUSTING DEVICE FOR CASTING DIE

申请公布号：JPS6475141(A)

申请号：JP19870231127

申请日期：1987.09.17

申请公布日期：1989.03.20

申请人：

KOMATSU ZENOA KK

发明人：MIYATA NOBUO

分类号：B22C9/00

主分类号：B22C9/00

摘要：PURPOSE:To prevent the casting defect by a gas by providing the vent hole opening on the inner wall of the die surrounding a core, forming the vent chamber communicating to the vent hole on the upper and lower faces of the die and sucking it by a vacuum pump. CONSTITUTION:The molten metal of a dissoluted aluminum alloy is poured into a sprue 27 and it is flowed to the space part between a core 7 and die inner wall. The mass amt. of gas generated with the synthetic resin material of the core 7 being burnt is forcibly sucked to a vacuum pump via a vent hole 9, degassing chamber 17, suction pipe 21 and cent hole 11, degassing chamber 19 and suction pipe 23, and exhausted from an exhausting port. The casting defect by a gas can thus be prevented.