Analysis of Skin Microstructure Formation on a Die Casting

Bai yanfei Zhao haidong Wu zhaoji Wu lizhen

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Analysis of Skin Microstructure Formation on a Die Casting
Issue S1, Pages: 398-401(2008)
Published： 2008 ，
DOI：

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[1]白砚飞,赵海东,吴兆基,吴丽贞.压铸件的表层微观组织及其形成分析[J].特种铸造及有色合金,2008(S1):398-401.

Bai yanfei Zhao haidong Wu zhaoji Wu lizhen. Analysis of Skin Microstructure Formation on a Die Casting. [J]. Special Casting & Nonferrous Alloys (S1):398-401(2008)
[1]白砚飞,赵海东,吴兆基,吴丽贞.压铸件的表层微观组织及其形成分析[J].特种铸造及有色合金,2008(S1):398-401. DOI：

Bai yanfei Zhao haidong Wu zhaoji Wu lizhen. Analysis of Skin Microstructure Formation on a Die Casting. [J]. Special Casting & Nonferrous Alloys (S1):398-401(2008) DOI：

摘要

通过对平板压铸件取样及微观组织分析

发现不同位置表层组织具有3种特征:有较厚且细密的激冷组织;有少量激冷组织;完全没有激冷组织。经过平板压铸件充型及凝固过程的数值模拟

探讨了上述不同特征表层组织形成的原因

结果表明:充型过程金属液与模具的碰撞方式

以及凝固顺序对表层组织有着重要影响。

Abstract

Based on analysis of the skin microstructure of obtained samples from a plate die casting

three characteristics of skin microstructure including thick and fine grained chilling microstructure

a small number of chilling microstructure and no chilling microstructure totally

were observed. With the numerical simulation of filling and solidification process for the plate die casting

the formation of different characteristics was discussed. The research indicated that the mode of collision between filling liquid and die surface as well as the solidification order had important effect on the skin microstructure formation.