压铸AlSi10MnMg铝合金中铸态缺陷分析

赵旭; 王平; 孙晶莹; 常东旭

doi:10.15980/j.tzzz.2019.12.004

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压铸AlSi10MnMg铝合金中铸态缺陷分析
Analysis of As-cast Defects in the Die Casting AlSi10MnMg Alloy
2019年39卷第12期页码：1291-1293
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.12.004

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[1]赵旭,王平,孙晶莹,常东旭.压铸AlSi10MnMg铝合金中铸态缺陷分析[J].特种铸造及有色合金,2019,39(12):1291-1293.

Zhao Xu, Wang Ping, Sun Jingying, et al. Analysis of As-cast Defects in the Die Casting AlSi10MnMg Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(12):1291-1293.
[1]赵旭,王平,孙晶莹,常东旭.压铸AlSi10MnMg铝合金中铸态缺陷分析[J].特种铸造及有色合金,2019,39(12):1291-1293. DOI： 10.15980/j.tzzz.2019.12.004.

Zhao Xu, Wang Ping, Sun Jingying, et al. Analysis of As-cast Defects in the Die Casting AlSi10MnMg Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(12):1291-1293. DOI： 10.15980/j.tzzz.2019.12.004.

摘要

基于Flow-3D模拟结果对薄壁AlSi10MnMg铝合金承重梁进行了实际生产

并对模拟结果中存在缺陷的典型位置进行了观察与分析

发现了偏析、卷气、缩孔及氧化夹杂等缺陷。根据零件的实际生产情况与缺陷分布情况

给出了消除缺陷的方案。结果表明

对熔体的搅拌使合金成分均匀;使用致密过滤网可以减少氧化夹杂;增加保压时间来减少缩孔;优化浇注系统或采用真空压铸系统来减少零件内的卷气缺陷。

Abstract

The AlSi10 MnMg longitudinal beam was produced according to the Flow-3 D simulation results

and the as-cast microstructure was observed and analyzed for typical positions. The metallography reveals the typical defects including segregation

air entrapment

shrinkage and oxide inclusion. According to the distribution and microstructure of the defects

the countermeasures were presented to reduce the casting defects. The alloying element can be distributed uniformly in the alloy through stirring the melt. Oxide inclusions can be decreased by adopting dense filter. Shrinkage porosities can be reduced through extending hold pressure time. Air-entrapment defects can be declined through optimizing gating system or using vacuum die casting.