Discussion on Bottom-Shrinkage in Cast Zn-Al Alloy

Duanmu Guangming

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Discussion on Bottom-Shrinkage in Cast Zn-Al Alloy
Issue 6, (1999)
Published： 1999 ，
DOI：

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[1]端木光明.铸造锌铝系合金底缩现象探讨[J].特种铸造及有色合金,1999(06):42-44.

Duanmu Guangming. Discussion on Bottom-Shrinkage in Cast Zn-Al Alloy. [J]. Special Casting & Nonferrous Alloys (6).(1999)
[1]端木光明.铸造锌铝系合金底缩现象探讨[J].特种铸造及有色合金,1999(06):42-44. DOI：

Duanmu Guangming. Discussion on Bottom-Shrinkage in Cast Zn-Al Alloy. [J]. Special Casting & Nonferrous Alloys (6).(1999) DOI：

摘要

锌铝系合金铸造时出现反常的底部缩孔

而用一般上置式冒口对此类缩孔的补缩效果甚微。由于重力偏析造成的异常成分过冷导致底缩现象

因此针对成因提出消除或减轻底缩的途径。

Abstract

There is abnormal bottom shrinkage in Zn Al alloy castings and top riser has little effect on them. The reason causing bottom shrinkage is that gravitational segregation results in unusual composition undercooling

the method to eliminate or ease bottom shrinkage is given.

关键词

锌铝系合金底缩成分过冷重力偏析

Keywords

Zn Al AlloyBottom ShrinkageComposition UndercoolingGravity Segregation

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