Technology Improvement of the Valve with Dispersed Hot Spots in Investment Casting

Zheng Xiao

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Technology Improvement of the Valve with Dispersed Hot Spots in Investment Casting
Issue 5, Pages: 42-43(2002)
Published： 2002 ，
DOI：

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[1]郑晓.分散热节阀体熔模铸造工艺的改进[J].特种铸造及有色合金,2002(05):42-43+0.

Zheng Xiao. Technology Improvement of the Valve with Dispersed Hot Spots in Investment Casting. [J]. Special Casting & Nonferrous Alloys (5):42-43(2002)
[1]郑晓.分散热节阀体熔模铸造工艺的改进[J].特种铸造及有色合金,2002(05):42-43+0. DOI：

Zheng Xiao. Technology Improvement of the Valve with Dispersed Hot Spots in Investment Casting. [J]. Special Casting & Nonferrous Alloys (5):42-43(2002) DOI：

摘要

通过改变浇注系统设计方案

消除有厚大法兰的阀体铸件的气孔和缩松缺陷。采用直浇道底注的充型方式

在热节部位放置暗冷铁和撒铬铁矿砂成功地铸造出了阀体铸件

并投入批量生产

Abstract

Gas hole and shrinkage porosity in the valves with massive flange were eliminated through altering design sketch of gating system. The valves were produced successfully by adopting bottom gating system

laying external chill and spreading chromite sand on hot spot position.