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.
作者
洪凌翔
孟庆通
Hong Lingxiang;Meng Qingtong(Central Research Institute,Baoshan Iron & Steel Co. ,Ltd. ,Shanghai 200940,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2019年第9期7-11,共5页
Forging & Stamping Technology
关键词
TC11钛合金
等温锻造
长筒类锻件
有限元模拟
力学性能
TC11 titanium alloy
isothermal forging
long cylinder forgings
finite element simulation
mechanical properties
