Investment Casting Process for Complex Magnesium Alloy Precision Castings

Author of the article:XIE Haitao1,2, LIU Jinxue2 , HAO Yiwei3 , GAO Hua2 , LIU Zhipeng2

Author's Workplace：1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; 2. Zhengzhou Light Alloy Institute Co., Ltd, Zhengzhou 450041, China; 3. Changzhou Huachuang Aviation Technology Co., Ltd., Changzhou 213159, China

Key Words：investment casting; gating system; magnesium alloy; interfacial reaction

Abstract：The complex magnesium alloy precision castings were studied by the design of the bottom pouring system, the simulation of the pouring process, and the XRD and X-Ray nondestructive flaw detector. The results show that the metal molten feeding of the casting system is good, the surface of the casting is smooth, and there is no obvious interface reaction between the casting shell and the molded shell. The casting structure is compact, and there is no shrinkage porosity and cavity. The dimensional tolerance of the casting can reach CT6 grade by the three-dimensional test