TC6钛合金叶片精锻工艺及模具变形补偿设计  

Precision forging process and design on mold deformation compensation for TC6 titanium alloy blade

作　　者：王鹏 龚小涛[2] 吕学春 Wang Peng;Gong Xiaotao;Lyu Xuechun(AECC Xi’an Aero_Engine Ltd.,Xi’an 710021,China;General Aviotion Academy,Xi’an Aeronautical Polytechnic Institute,Xi’an 710089,China)

机构地区：[1]中国航发西安航空发动机有限公司,陕西西安710021 [2]西安航空职业技术学院通用航空学院,陕西西安710089

出　　处：《锻压技术》2021年第6期48-53,共6页Forging & Stamping Technology

基　　金：陕西省科学研究项目计划(16JK1401);西安航空职业技术学院科研计划项目(19XHZK-004)。

摘　　要：为解决TC6钛合金精锻叶片的变形问题,利用有限元分析方法并结合实际生产,对精锻工艺、模具补偿及热处理工艺进行了优化。在分析TC6钛合金的高温压缩应变行为的基础上,给出了具体的精锻工艺参数及热处理工艺参数;分析了精锻成形过程中变形残余应力对TC6钛合金叶片变形的影响规律及模具变形规律,采用终锻模具逆向补偿设计和改进热处理装炉方式两种手段来减小精锻叶片的变形。研究结果表明:改进工艺后,某机3、4级精锻转子叶片不同截面的扭转值较改进前下降了53%~84%,年均废品损失降低了5万元以上,将该工艺推广至其他精锻叶片生产中可取得可观的经济效益。To solve the deformation problem of precision forging blade for TC6 titanium alloy, the precision forging process, mold compensation and heat treatment process were optimized by finite-element analysis method combined with actual production. Then, based on the analysis of the high temperature compressive strain behavior for TC6 titanium alloy, the precise forging process parameters and the heat treatment process parameters were given. Furthermore, the influence laws of residual stress on the deformation of TC6 titanium alloy blade and the deformation laws of mold in the precision forging process were analyzed, and the deformation of final forging blade was reduced by the reverse compensation design of final forging mold and the improvement of heat treatment furnace. The results show that after the process is improved, the torsion values of different sections for the precision forging rotor blades of three and four stages of a certain engine are reduced by 53%-84% compared with those before the improvement, and the average annual waste loss is reduced by more than 50000 yuan. Thus, this process can be extended to other precision forging rotor blades production to obtain considerable economic benefits.

关 键 词：TC6钛合金 精锻工艺 有限元分析 逆向补偿 热处理 

分 类 号：TG314[金属学及工艺—金属压力加工]