Formation and Countermeasures of Crack in Metal mould Aluminum Alloy Components in Gravity Casting

Lu Gonghui

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Formation and Countermeasures of Crack in Metal mould Aluminum Alloy Components in Gravity Casting
Issue 5, Pages: 308-310(2006)
Published： 2006 ，
DOI：

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[1]卢功辉.金属型铝合金铸件裂纹产生原因及对策[J].特种铸造及有色合金,2006(05):308-310+256.

Lu Gonghui. Formation and Countermeasures of Crack in Metal mould Aluminum Alloy Components in Gravity Casting. [J]. Special Casting & Nonferrous Alloys (5):308-310(2006)
[1]卢功辉.金属型铝合金铸件裂纹产生原因及对策[J].特种铸造及有色合金,2006(05):308-310+256. DOI：

Lu Gonghui. Formation and Countermeasures of Crack in Metal mould Aluminum Alloy Components in Gravity Casting. [J]. Special Casting & Nonferrous Alloys (5):308-310(2006) DOI：

摘要

以油底壳为例

分析了薄壁、深型腔、大平面铸件铝合金金属型重力铸造裂纹缺陷产生的两个根本原因——合金凝固特性及铸件凝固时期的热应力和收缩应力。通过控制化学成分

强化精炼

浇注温度为（715±5）℃

分散引注

模具温度控制在300℃

调整涂料厚度以及强化凝固顺序等工艺控制措施

成功解决了该类缺陷。

Abstract

The formation of crack in metal mould larger-plane thinned-wall aluminum alloy parts with deep-cavity was analyzed for oil tank.The defects are attributed to the alloy solidified characteristics and thermal stress and cotraction stress of the parts during solidification.The defects are eliminated success fully by controlling chemical composition of the alloy

enhancing refinement （pouring temperature of 710 ℃）

dispersively inducing pouring

controlling die temperature above 300 ℃

adjusting thickness of the coating and reinforcing solidified orders.

关键词

薄壁深型腔大平面铸件金属型铸造裂纹缺陷工艺控制措施

Keywords

Thinned-wallDeep-cavityLarge PlaneMetal Mould CastingCrackCountermeasures

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Influence of Mold Wall Thickness in Metal Mould Casting on the Casting Quality