钛合金精铸件工艺孔补焊变形规律预测及验证  

Prediction and Verification of Deformation Law during Repair Welding for Process Hole of Titanium Alloy Castings

作　　者：李峰 孙智 崔新鹏 马静 刘小江 南海 Li Feng;Sun Zhi;Cui Xinpeng;Ma Jing;Liu Xiaojiang;Nan Hai(Baimtec Material Co.,Ltd.,Beijing 100095;Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology,Beijing 100095;AECC Beijing Institute of Aeronautical Materials,Beijing 100095)

机构地区：[1]北京航空材料研究院股份有限公司,北京100095 [2]北京市先进钛合金精密成型工程技术研究中心,北京100095 [3]中国航发北京航空材料研究院,北京100095

出　　处：《特种铸造及有色合金》2024年第3期428-432,共5页Special Casting & Nonferrous Alloys

摘　　要：为了掌握钛合金铸件补焊过程中的变形规律和应力分布,基于仿真分析和工艺试验结合的方法,开展了关键仿真参数的校核,对热输入的电压进行了实际测量并校核了双椭球热源模型,针对滑轨套筒铸件的工艺孔开展了不同补焊电流下铸件变形模拟及试验验证。结果表明,在焊接电流分别为100、150以及200 A时,铸件工艺孔附近的变形呈下凹趋势,变形量均约为0.1 mm。随着焊接电流增大,铸件的弧面中部变形量逐渐增大,由0.08 mm增至0.2 mm,这与Sysweld仿真预测的趋势一致。In order to master the deformation law and stress distribution during repair welding of titanium alloy castings,the key simulation parameters were proofread firstly based on the combination of simulation analysis and process experiment.The heat input voltage was measured to check double ellipsoid heat source model,and the simulation as well as verification of casting deformation were carried out for the process hole of slide-way sleeve casting under different welding currents.The results indicate that the deformation near the casting process hole presents a downward trend with the welding current of 100,150 and 200 A,and the deformation is about 0.1 mm.With the increase of welding current,the deformation in the middle arc of casting is gradually increased from 0.08 mm to 0.2 mm,which is consistent with the trend predicted by Sysweld simulation.

关 键 词：钛合金 补焊 变形 仿真模拟 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TP311[金属学及工艺—金属材料]