基于数值模拟的6061铝合金气瓶热旋压收口工艺的优化  

Optimization of Hot Spinning Necking Process for 6061 Aluminum Alloy Gas Cylinder Basedon Numerical Simulation

作　　者：刘光军 丁桦[1,2] 李光宇 蔡立柱 LIU Guangjun;DING Hua;LI Guangyu;CAI Lizhu(College of Materials Science and Engineering,Northeastern University,Shenyang 110000,China;Key Laboratory of Lightweight Structure Materials,Liaoning Province,Shenyang 110000,China;Shenyang Oushidun New Material Technology Co.,Ltd.,Shenyang 110121,China)

机构地区：[1]东北大学材料科学与工程学院,辽宁沈阳110000 [2]辽宁省轻量化用关键金属结构材料重点实验室,辽宁沈阳110000 [3]沈阳欧施盾新材料科技有限公司,辽宁沈阳110121

出　　处：《热加工工艺》2023年第15期89-93,共5页Hot Working Technology

摘　　要：热旋压收口过程中变形不均匀容易引起起皱和破裂。本文基于所建立的有限元模型,运用ABAQUS软件对6061铝合金气瓶热旋压收口过程进行了数值模拟,并对模型进行了实验验证。根据数值模拟结果,提出了对内外表面同时加热的工艺改进方法。数值模拟和实验结果证明,采用该热旋压收口工艺可以显著改善温度分布的不均匀性,提高应力和应变分布的均匀性,同时在整个厚度方向起到细化晶粒的作用。Wrinkling and fracture are easy to occur in the process of hot spinning necking due to uneven deformation.Based on the finite element model,the hot spinning necking process of the 6061 aluminum alloy gas cylinder was simulated by using ABAQUS software,and the model was experimentally verified.According to the results of numerical simulation,a process improvement method for simultaneous heating of internal and external surfaces was proposed.The numerical simulation and experimental results show that the thermal spinning necking process can significantly improve the non-uniformity of the temperature distribution,improve the uniformity of stress and strain distribution,and play the role of grain refinement in the whole thickness direction.

关 键 词：热旋压 收口 数值模拟 变形不均匀 温度场 

分 类 号：TG386[金属学及工艺—金属压力加工]