游动芯头拉拔AZ31镁合金管材工艺优化  

Optimization of the Process of Drawing AZ31 Magnesium Alloy Tubes with Floating Core Head

作　　者：李钦生[1] 王建军[1] 王佩杰 Li Qinsheng;Wang Jianjun;Wang Peijie(School of Mechanical Engineering,Anhui Technical College of Mechanical and Electrical Engineering,Wuhu,Anhui 241002,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan,Shanxi 030024,China)

机构地区：[1]安徽机电职业技术学院机械工程学院,安徽芜湖241002 [2]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《黑龙江工业学院学报(综合版)》2025年第1期128-134,共7页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：2022年安徽省高校科学研究重点项目(项目编号:2022AH052356);2021年高校学科(专业)拔尖人才学术资助项目(项目编号:gxbjZD2021100)。

摘　　要：为了探索AZ31镁合金薄壁管游动芯头拉拔成形合适的工艺参数,对其进行了游动芯头拉拔过程仿真,并比较研究了拉拔速度、摩擦系数、减壁量、减径量等因素对拉拔管材成形性的影响。研究结果表明,在拉拔AZ31镁合金薄壁管材时,采用拉拔变形速率为0.3mm/s;摩擦系数搭配为管坯与芯头摩擦系数为0.02,外模具与管坯摩擦系数为0.04或0.06;选取减壁量为0.04~0.08mm,减径量为0.5~0.7mm的工艺参数,可有效保证镁合金薄壁管材的成形质量。In order to explore the suitable process parameters for the drawing and forming of AZ31 magnesium alloy thin-wall tubes with a traveling core head,the simulation of the drawing process of the floating core head was carried out by using ABAQUS software,and the effects of the drawing speed,friction coefficient,wall reduction,diameter reduction and other factors on the formability of the drawn tubes were comparatively investigated.The results show that when drawing AZ31 magnesium alloy thin-wall tubes,the drawing deformation rate of 0.3mm/s;the friction coefficient of 0.02 for the friction coefficient of the billet and the core head,and the friction coefficients of the outer mold and the billet of 0.04 or 0.06,respectively;and the selection of the process parameters of the wall reduction amount of 0.04~0.08mm and the reduction amount of 0.5~0.7mm,it can effectively ensure the forming quality of the molding quality of magnesium alloy thin-wall pipe.

关 键 词：AZ31管材 游动芯头拉拔 有限元模拟 工艺优化 

分 类 号：TG359[金属学及工艺—金属压力加工]