Numerical Simulation and Process Optimization of Investment Casting Process for Thin-walled Complex Titanium Alloy Casting

Cheng Yazhen; Li Bobo; Sun Bing; Du Yanle; Sun Hongzhe; Liu Yinqi

doi:10.15980/j.tzzz.2022.06.022

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Numerical Simulation and Process Optimization of Investment Casting Process for Thin-walled Complex Titanium Alloy Casting
Vol. 42, Issue 6, Pages: 780-784(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.06.022

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Cheng Yazhen, Li Bobo, Sun Bing, et al. Numerical Simulation and Process Optimization of Investment Casting Process for Thin-walled Complex Titanium Alloy Casting. [J]. Special Casting & Nonferrous Alloys 42(6):780-784(2022)
DOI：

Cheng Yazhen, Li Bobo, Sun Bing, et al. Numerical Simulation and Process Optimization of Investment Casting Process for Thin-walled Complex Titanium Alloy Casting. [J]. Special Casting & Nonferrous Alloys 42(6):780-784(2022) DOI： 10.15980/j.tzzz.2022.06.022.

摘要

利用数值模拟技术对某薄壁复杂钛合金铸件的温度场、应力场进行了模拟，确定了适合于生产该铸件的铸造工艺。该方案模拟的温度场分布比较均匀，利于铸件的均衡凝固，铸件的内部品质较好，模拟的应力场分布比较均匀，整个铸件的应力差最小。根据模拟的结果，对大壁厚比部位采用冒口补缩。采用优化后的铸造工艺生产铸件，制造出与模拟结果一致的符合技术要求的优质铸件。

Abstract

The temperature field and stress field of a thin-walled complex titanium alloy casting was simulated by numerical simulation technology

and the casting process suitable for the casting was determined. The temperature field distribution simulated by the scheme is relatively uniform

which is conductive to the balanced solidification of the casting. Internal quality reaches optimal

and the simulated stress field distribution is relatively uniform with the lowest stress difference in the whole casting. According to the simulation results

riser feeding is adopted for the parts with large wall thickness radio. High quality castings which are consistent with the simulation results and meet the technical requirements are effectively produced by optimized casting process.