Permeability of Washings for Vacuum Evapouration-Pattern Casting

Wang Enze He Jiyun

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Permeability of Washings for Vacuum Evapouration-Pattern Casting
Issue 6, Pages: 1-3(1993)
Published： 1993 ，
DOI：

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[1]王恩泽,何纪运,沈军,阎峰云.负压实型铸造用涂料透气性的研究[J].特种铸造及有色合金,1993(06):1-3.

Wang Enze He Jiyun. Permeability of Washings for Vacuum Evapouration-Pattern Casting. [J]. Special Casting & Nonferrous Alloys (6):1-3(1993)
[1]王恩泽,何纪运,沈军,阎峰云.负压实型铸造用涂料透气性的研究[J].特种铸造及有色合金,1993(06):1-3. DOI：

Wang Enze He Jiyun. Permeability of Washings for Vacuum Evapouration-Pattern Casting. [J]. Special Casting & Nonferrous Alloys (6):1-3(1993) DOI：

摘要

探索了聚乙烯醇、水玻璃及粘土加入量对涂料常温透气性及经高温后透气性的影响。结果表明:聚乙烯酸加入量增加

常温透气性存在一峰值

高温后透气性提高;水玻璃量增加使常温透气性下降

高温后透气性存在一峰值;粘土量增加使常温透气性下降高温后透气性提高。

Abstract

The effects of the polyvinyl alcohol （PVA）

sodium silicate and bentonite contents on the permeability of washings at room temperature （K1） and after high temperature heating （K2） were studied. The results shaw that as the content of PVA increasing

K1 possesses a peak value

and K2 rises

as the content of sodium silicate increasing

K1 descends and K2 possesses a peak value

as the content of bentonite increasing

K1 descends and K2 increases.