Gas Volume Predictionin Sand Core for Aluminum Alloy Cylinder Head and Processing Optimization Based on AnyCasting Software

Liu Ji; Du Hang; Xu Haideng; Zhang Jixiang; Zhao Kui

doi:10.15980/j.tzzz.2019.12.007

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Gas Volume Predictionin Sand Core for Aluminum Alloy Cylinder Head and Processing Optimization Based on AnyCasting Software
Vol. 39, Issue 12, Pages: 1301-1304(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.12.007

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[1]刘骥,杜航,徐海登,张吉祥,赵葵.基于数值模拟的铝合金缸盖砂芯发气预测及工艺优化[J].特种铸造及有色合金,2019,39(12):1301-1304.

Liu Ji, Du Hang, Xu Haideng, et al. Gas Volume Predictionin Sand Core for Aluminum Alloy Cylinder Head and Processing Optimization Based on AnyCasting Software. [J]. Special Casting & Nonferrous Alloys 39(12):1301-1304(2019)
[1]刘骥,杜航,徐海登,张吉祥,赵葵.基于数值模拟的铝合金缸盖砂芯发气预测及工艺优化[J].特种铸造及有色合金,2019,39(12):1301-1304. DOI： 10.15980/j.tzzz.2019.12.007.

Liu Ji, Du Hang, Xu Haideng, et al. Gas Volume Predictionin Sand Core for Aluminum Alloy Cylinder Head and Processing Optimization Based on AnyCasting Software. [J]. Special Casting & Nonferrous Alloys 39(12):1301-1304(2019) DOI： 10.15980/j.tzzz.2019.12.007.

摘要

某铝合金缸盖采用重力倾转铸造工艺生产

发现进气侧螺栓柱顶端存在较严重的气孔缺陷

首次试制废品率高达44%。利用AnyCasting软件模拟铸件充型和凝固过程

并对该气孔缺陷产生原因进行分析。通过综合考虑铸造工艺参数和模具结构设计

发现气孔缺陷产生的原因为水道和气道砂芯受热导致砂芯发气造成的。因此

对底模模具水套脚孔位置采用抽气等改进措施

改进后连续生产30件均未发现气孔缺陷。

Abstract

The gas hole could be observed in the top end of air intake side bolt stud of tilting gravity casting aluminum alloy cylinder. The produced-scrapped rate during the first production reaches up to 44%. The filling and solidification during casting process were simulated by AngCasting software

and origination of blowhole defect was analyzed. Through comprehensive considering the casting parameters and mold structure design

the formation of gas hole is attributed to the releasing gas of heated sand cores of water channel and air channel. Hence based on the simulated result

the venting structure on bottom mold was designed. The blowhole defects can be absent after producing 30 cylinders using the modified design.