空心薄壁细长轴旋转锻造过程材料流动规律研究  

Research on the Law of Metal Flow during the Rotary Forging Process of Thin-Walled and Slender Shaft Parts

作　　者：王聚存 田天泰 吴学深 曹苗 张以升 李双全 张琦[2] WANG Ju-cun;TIAN Tian-tai;WU Xue-shen;CAO Miao;ZHANG Yi-sheng;LI Shuang-quan;ZHANG Qi(AECC South Industry Co.,Ltd.,Zhuzhou 412002,China;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Military Representative Office of Aviation Stationed in Zhuzhou,Zhuzhou 412002,China)

机构地区：[1]中国航发南方工业有限公司,湖南株洲412002 [2]西安交通大学机械工程学院,西安710049 [3]驻株洲地区航空军代室,湖南株洲412002

出　　处：《精密成形工程》2021年第4期102-108,共7页Journal of Netshape Forming Engineering

基　　金：陕西省自然科学基金青年基金(2019JQ-598);材料成形与模具技术国家重点实验室开放课题研究基金(P2020-014)。

摘　　要：目的为了准确地设计带内台阶的薄壁细长轴类零件的旋转锻造用管坯,研究缩径过程中金属材料的流动规律。方法针对薄壁细长轴内台阶孔,采用有限元模拟与实验验证相结合的方法,研究管坯旋转锻造过程中,毛坯外径/内径之比、模具入角和摩擦条件对缩径过程金属流动的影响规律。结果管料外径和内径之比越大,金属的厚向应变越小;摩擦因数越大,金属的厚向应变越大;模具入角越大,金属的厚向应变越小。结论实验和模拟结果获得的规律基本一致,有效验证了模拟结果的正确性。In order to accurately design the billet for rotary forging of thin-walled slender shaft parts with internal steps,it is necessary to master the flow law of metal materials during the diameter reduction process.Aiming at the stepped hole in the thin-walled slender shaft,the method of combining finite element simulation and experimental verification was used to study the ratio of blank outer diameter/inner diameter,the mold entry angle and the influence law of conditions on the metal flow in the precision machining process of rotary forging.The larger the ratio of the outer diameter to the inner diameter of the pipe material is,the smaller the thickness strain of the metal is;the larger the friction factor is,the greater the thickness strain of the metal is;the larger the mold entry angle is,the smaller the thickness strain of the metal is.The laws obtained from the experiment and simulation results are basically the same,which effectively verifies the correctness of the simulation results.

关 键 词：旋转锻造 薄壁细长轴 内台阶孔 金属流动规律 

分 类 号：TG31[金属学及工艺—金属压力加工]