钛合金薄壁弯管熔模铸造工艺试制开发  

Research and Trial Production of Investment Casting Process for Titanium Alloy Thin-walled Bent Tube

作　　者：胡春阳 贾志伟 李峰 肖强伟 赵瑞斌 南海 HU Chunyang;JIA Zhiwei;LI Feng;XIAO Qiangwei;ZHAO Ruibin;NAN Hai(Baimtec Material Co.,Ltd.,Beijing 100094,China;Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology,Beijing 100094,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]北京航空材料研究院股份有限公司,北京100094 [2]北京市先进钛合金精密成型工程技术研究中心,北京100094 [3]中国航发北京航空材料研究院,北京100095

出　　处：《铸造工程》2025年第2期7-11,共5页Foundry Engineering

摘　　要：以一种典型弯管为例,采用模拟仿真和交叉试验方案1~3验证,通过优化铸件的结构和浇注系统,铸件浇注后嵌入本体的缩孔减少了40%,甚至消除。采用模具蜡成形的铸件外表面轮廓度、无损检测的综合质量均优于光敏树脂蜡模浇注成形的铸件。方案3的荧光、X光终检一次合格率91.7%,平均循环次数0.08次,铸件实际外表面轮廓为0~0.3 mm,综合力学性能最佳,抗拉强度为926 MPa,屈服强度为868 MPa,伸长率达9.0%,断面收缩率16%,为最佳试验方案。By conducting computer simulation and cross experiment 1~3 on a typical bent pipe,the risk of embedded body shrinkage after pouring is reduced by 40% by optimizing the casting structure and casting system or even eliminated.The outer contour and comprehensive quality of non-destructive testing of castings formed by mold wax were superior to those formed by photosensitive resin wax mold casting.The first pass rate of fluorescence and X-ray final inspection in scheme 3 was 91.7%,with an average of 0.08 repetitions.The outer contour of the casting was about 0~0.3 mm,and the comprehensive mechanical properties were the best.The tensile strength was 926 MPa,the yield strength was 868 MPa,the elongation rate was 9.0%,and the cross-sectional shrinkage rate was 16%,which is the best test scheme.

关 键 词：钛合金 熔模精密铸造 弯管 蜡模 浇注系统 

分 类 号：TG292[金属学及工艺—铸造]