一种铝缸盖重力铸造过程中“冒泡”问题的分析  

Analysis of Bubble Phenomena in Gravity Casting Aluminum Alloy Cylinder Head

作　　者：刘永跃[1,2] 钱辉 胡宪兵 陈照达 

机构地区：[1]浙江工业大学经贸管理学院 [2]宁波合力模具科技股份有限公司 [3]江淮铸造公司

出　　处：《特种铸造及有色合金》2010年第7期680-681,共2页Special Casting & Nonferrous Alloys

摘　　要：缸盖浇注过程中局部发生气泡从铝液中逸出的现象,严重者如开水沸腾状。对于缸盖重力铸造过程中"冒泡"的现象进行了分析,发现砂芯发气量比正常的指标高出近一倍,排气措施也不充分,经过严格控制发气量以及在模具上增加负压抽气后,"冒泡"的现象得到了解决。Bubbling phenomena in gravity casting aluminum alloy cylinder head were analyzed.It is found that gas generation from sand core is one time higher than standard index,and exhausted measures are insufficient,which are responsible for the bubbling phenomena.Bubbling phenomena in gravity casting are eliminated by strictly controlling gas generation from sand core and adding vacuum pumping system on the mould.

关 键 词：发动机铝缸盖 重力铸造 冒泡 发气 排气 

分 类 号：TG292[金属学及工艺—铸造]