薄壁复杂钛合金铸件熔模铸造工艺模拟及优化  

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

作　　者：程亚珍 李渤渤 孙冰 杜延乐 孙宏喆 刘茵琪 Cheng Yazhen;Li Bobo;Sun Bing;Du Yanle;Sun Hongzhe;Liu Yinqi(Luoyang Sunrui Titanium Precision Casting Co.,Ltd.)

机构地区：[1]洛阳双瑞精铸钛业有限公司,河南洛阳471023

出　　处：《特种铸造及有色合金》2022年第6期780-784,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(2020YFB2008300)

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。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.

关 键 词：数值模拟 钛合金铸件 铸造工艺 

分 类 号：TG292[金属学及工艺—铸造]