锻压技术

TC11钛合金筒类精锻件成形工艺

英文标题：Precision forging process of TC11 titanium alloy cylinder

作者：洪凌翔孟庆通

单位：宝山钢铁股份有限公司

分类号：TG319

出版年,卷(期):页码：2019,44(9):7-11

摘要：

针对钛合金筒类精锻件的锻造工艺，主要研究了TC11钛合金筒类件（长约为900 mm，外径为Φ150 mm，内径为Φ110 mm）的等温锻造工艺，对锻件尺寸、锻压工艺、模具设计进行了研究，设计出可行的锻造方案。采用有限元模拟法对变形过程和模具受力进行分析验证，结果显示：变形过程中锻件变形量均匀，主要分布在1.5~2.5范围内；模具工作面最大承受载荷为250 MPa。在材料可承受范围内，得出最佳的坯料形状和成形工艺参数，且锻件实际情况符合预期。经过产品试制得到了试制产品的力学性能和显微组织，各项力学性能都达到标准要求，晶粒细小，组织均匀，锻件尺寸精确，材料利用率达到70%。采用此等温锻造方法可以生产TC11钛合金长筒类大型锻件。

For the precision forging process of titanium alloy cylinder, the isothermal forging process of TC11 titanium alloy cylinder with length of 900 mm, outer diameter of Φ150 mm and inner diameter of Φ110 mm was studied, and the forgings sizes, forging process and die design were researched. Then, the suitable forging scheme was designed, and the deformation process and the force on dies were analyzed and verified by finite element simulation. The results show that the deformation of forgings is uniform during the forging process within 1.5-2.5, and the maximum loading on the working face of die is 250 MPa. Within the material tolerance range, the best billet shape and forming process parameters were obtained, and the actual situation of forgings was in line with expectations. By trial production of product, the mechanical properties and microstructures of the trial production were obtained, and the mechanical properties were up to standard with the fine grain sizes, the uniform microstructure, the accurate forging sizes and the material utilization rate of 70%. Thus, TC11 titanium alloy long cylinder heavy forgings can be produced by the isothermal forging process.

基金项目：

洪凌翔（1992-），男，硕士，助理工程师E-mail：983542256@qq.com

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