基于Deform-3D的AZ31镁合金自行车曲柄等温闭式锻造过程的数值模拟  

Study on numerical simulation of AZ31 magnesium alloy bike crank isothermal closed-die forging based on Deform-3D

作　　者：张祎 王其军[2] 王磊[2] 刘化民[2] 

机构地区：[1]宁波勋辉电器有限公司,浙江宁波315800 [2]吉林大学辊锻工艺研究所,吉林长春130025

出　　处：《锻压技术》2011年第6期133-137,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(50775098)

摘　　要：通过对镁合金自行车曲柄等温闭式锻造过程进行数值模拟,揭示自行车曲柄锻造变形过程中的金属流动规律,分析速度场和凸模行程载荷曲线的特点。其成形过程分为4个阶段:弯曲变形阶段、杆身压扁阶段、填充型腔阶段和最终成形阶段。研究了温度及工作速度对镁合金等温锻造过程的影响,结果显示,在350℃左右的等温环境,凸模的工作速度为3mm.s-1左右较适合镁合金自行车曲柄等温闭式锻造。Based on rigid and plastic FEM,magnesium alloy bike crank isothermal closed-die forging was simulated,the metal flowing rule in the bike crank forming process was revealed,and the characteristics of velocity field and curve of distance-load was analyzed.The process of the forging could be expressed in four stages of bending deformation,compressing deformation,die filling deformation and finish-forging deformation.Different temperatures and speeds influenced the process of magnesium alloy forging was studied,and magnesium alloy bike crank isothermal closed-die forging was suitable to be done at 3 mm·s-1 of punch in 350 ℃ isothermal environment.

关 键 词：AZ31镁合金 自行车曲柄 等温闭式锻造 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]