Measures of Effectively Eliminating Crack in Investment Castings

Wu Ming

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Measures of Effectively Eliminating Crack in Investment Castings
Issue 8, Pages: 618-619(2007)
Published： 2007 ，
DOI：

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[1]吴明.有效减少精铸件裂纹缺陷的工艺方法[J].特种铸造及有色合金,2007(08):618-619+571-572.

Wu Ming. Measures of Effectively Eliminating Crack in Investment Castings. [J]. Special Casting & Nonferrous Alloys (8):618-619(2007)
[1]吴明.有效减少精铸件裂纹缺陷的工艺方法[J].特种铸造及有色合金,2007(08):618-619+571-572. DOI：

Wu Ming. Measures of Effectively Eliminating Crack in Investment Castings. [J]. Special Casting & Nonferrous Alloys (8):618-619(2007) DOI：

摘要

铸件内浇道根部易出现过热

裂纹一般产生在靠近内浇道处。要求作探伤检查的铸件设计浇注系统时应使钢液充型平稳。采用转折形内浇道

能有效地降低钢液流速

转移铸件的过热区

减少和避免铸件在内浇道附近产生裂纹缺陷。

Abstract

The crack in investment castings is commonly created around ingate due to easily forming superheating at root of ingate. For the investment casting required for X-detection

the liquid steel should be smoothly filled in designing gating system. Through adopting turn-ingate to effectively reduce the filling velocity of liquid steel to transfer the superheating zone in the investment casting

the crack created around the ingate can be reduced or eliminated greatly.