Effects of Casting Pressure on Compactness of Rheo-diecasting AZ91D Magnesium Alloy Parts

Yang Liuqing1; Kang Yonglin1; Zhang Fan1; Ding Ruihua1; Li Jiong2

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Effects of Casting Pressure on Compactness of Rheo-diecasting AZ91D Magnesium Alloy Parts
Vol. 30, Issue 7, Pages: 630-632(2010)
Published： 2010 ，
DOI：

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[1]杨柳青,康永林,张帆,丁瑞华,李炯.铸造压力对AZ91D镁合金流变压铸件致密性的影响[J].特种铸造及有色合金,2010,30(07):630-632+584.

Yang Liuqing1, Kang Yonglin1, Zhang Fan1, et al. Effects of Casting Pressure on Compactness of Rheo-diecasting AZ91D Magnesium Alloy Parts. [J]. Special Casting & Nonferrous Alloys 30(7):630-632(2010)
[1]杨柳青,康永林,张帆,丁瑞华,李炯.铸造压力对AZ91D镁合金流变压铸件致密性的影响[J].特种铸造及有色合金,2010,30(07):630-632+584. DOI：

Yang Liuqing1, Kang Yonglin1, Zhang Fan1, et al. Effects of Casting Pressure on Compactness of Rheo-diecasting AZ91D Magnesium Alloy Parts. [J]. Special Casting & Nonferrous Alloys 30(7):630-632(2010) DOI：

摘要

采用自行开发的锥桶式流变成形机（Taper barrel rheomoulding machine

简称TBR）

并结合TOYOBD-900V4-T型压铸机

研究了铸造压力对AZ91D镁合金流变压铸件内部微观孔洞形态以及密度的影响。结果表明

铸造压力的增大可以明显改善流变压铸件内部微观孔洞缺陷

增大铸件密度。铸造压力小于65MPa时

压力对流变压铸件微观孔洞及密度的影响较大;而大于65MPa时

铸造压力的影响较小。

Abstract

We have developed a taper barrel rheomoulding machine combining with Toyo-BD-900V4-T die casting machine to understand effects of casting pressure on micro-hole morphology and density of rheo-diecasting AZ91D magnesium alloy parts.The results reveal that increasing in casting pressure can greatly eliminate the micro-hole in rheo-diecasting parts

increasing the density.The casting pressure has directly affected the micro-hole and density of the casting with pressure less than 65 MPa

however

effects of pressure can be neglected with more than 65MPa.