Numerical Simulation of Centrifugal Casting Process of Large Thin-Wall Ti Alloy Casting

Abstract:

Centrifugal pouring is often used in investment casting of large thin-wall Ti castings to promote filling. Shrinkage defects often appear in a Ti casting produced by centrifugal casting. Numerical simulation indicate that shrinkage is caused by these reasons: improper pouring system and thin-wall structure limited feeding of liquid metal from pouring system, and centrifugal force enlarged the shrinkage defects by strengthen feeding of liquid within the casting. Thus centrifugal casting is replaced by gravity casting and a new pouring system is adopted. Obvious shrinkage defects disappear in the new casting process.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 469-481
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.469
• Online since: March 2016
• Authors: Heng Shao, Yan Li, Peng Zhao, Hai Nan, Qing Yan Xu*
• Keywords: Centrifugal Casting, Investment Casting, Thin-Wall Casting, Titanium Alloy

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