Analysis of Bubble Phenomena in Gravity Casting Aluminum Alloy Cylinder Head

Liu Yongyue1; Qian Hui2; Hu Xianbing3; Chen Zhaoda3

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Analysis of Bubble Phenomena in Gravity Casting Aluminum Alloy Cylinder Head
Vol. 30, Issue 7, Pages: 680-681(2010)
Published： 2010 ，
DOI：

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[1]刘永跃,钱辉,胡宪兵,陈照达.一种铝缸盖重力铸造过程中“冒泡”问题的分析[J].特种铸造及有色合金,2010,30(07):680-681+588.

Liu Yongyue1, Qian Hui2, Hu Xianbing3, et al. Analysis of Bubble Phenomena in Gravity Casting Aluminum Alloy Cylinder Head. [J]. Special Casting & Nonferrous Alloys 30(7):680-681(2010)
[1]刘永跃,钱辉,胡宪兵,陈照达.一种铝缸盖重力铸造过程中“冒泡”问题的分析[J].特种铸造及有色合金,2010,30(07):680-681+588. DOI：

Liu Yongyue1, Qian Hui2, Hu Xianbing3, et al. Analysis of Bubble Phenomena in Gravity Casting Aluminum Alloy Cylinder Head. [J]. Special Casting & Nonferrous Alloys 30(7):680-681(2010) DOI：

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。

Abstract

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.