Effect of Transfer Behavior of Thermal Degradation Product on Porosity in Aluminum Alloy Casting in Lost Foam Process

Wu Guohua  Liu Zili  Liu Manping  Ding Wenjiang

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Effect of Transfer Behavior of Thermal Degradation Product on Porosity in Aluminum Alloy Casting in Lost Foam Process
Issue 5, Pages: 6-8(2001)
Published： 2001 ，
DOI：

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[1]吴国华,,,,,,,,,,刘子利,,,,,,,,,,刘满平,,,,,,,,,,丁文江,,,,,,,,,,罗吉荣.热解产物传输特性对消失模铝铸件针孔的影响[J].特种铸造及有色合金,2001(05):6-8+3.

Wu Guohua Liu Zili Liu Manping Ding Wenjiang. Effect of Transfer Behavior of Thermal Degradation Product on Porosity in Aluminum Alloy Casting in Lost Foam Process. [J]. Special Casting & Nonferrous Alloys (5):6-8(2001)
[1]吴国华,,,,,,,,,,刘子利,,,,,,,,,,刘满平,,,,,,,,,,丁文江,,,,,,,,,,罗吉荣.热解产物传输特性对消失模铝铸件针孔的影响[J].特种铸造及有色合金,2001(05):6-8+3. DOI：

Wu Guohua Liu Zili Liu Manping Ding Wenjiang. Effect of Transfer Behavior of Thermal Degradation Product on Porosity in Aluminum Alloy Casting in Lost Foam Process. [J]. Special Casting & Nonferrous Alloys (5):6-8(2001) DOI：

摘要

研究了涂料组成、涂层厚度、透气性、温度等对聚苯乙烯热解产物通过消失模涂层的传输特性的影响。结果表明

硅藻土加入量增加后

传输曲线的峰值下降

时间缩短。而云母粉则与之相反。涂层厚度增加、透气性下降

则传输曲线峰值增加

时间延长。探讨了模样热解产物通过涂层的传输行为对消失模铸造铝件针孔的影响。研究发现

热解产物传输曲线峰值高、传输时间长

有利于减少铝件的针孔

Abstract

The effects of coating constituent

coating layer thickness

permeability and temperature on transfer behavior of polystyrene thermal degradation product through coating layer have been studied. The results showed that the peak value and time in the transfer curve decrease with the increase of the diatomite addition while the result is just contrary to the increase of mica powder addition. With the increase of coating layer thickness and the decrease of permeability

the peak values and time increase. The influence of the transfer behavior of the pattern thermal degradation product through coating layer on porosity in aluminum alloy casting in lost foam casting was approached. The results showed that high peak value and long transfer time are helpful to decrease the porosity in the aluminum casting.