2A14铝合金环件轧制缺陷分析及工艺优化  

Rolling defects analysis and process optimization of 2A14 aluminum alloy ring part

作　　者：董晓传[1] 吴润谋 姜玉洁 曲周德[1] DONG Xiao-chuan;WU Run-mou;JIANG Yu-jie;QU Zhou-de(National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die&Mould,Tianjin University of Technology&Education,Tianjin 300222,China)

机构地区：[1]天津职业技术师范大学汽车模具智能制造技术国家地方联合工程实验室,天津300222

出　　处：《塑性工程学报》2022年第6期113-118,共6页Journal of Plasticity Engineering

基　　金：天津市教委科研计划项目(2021KJ027);天津市科技计划项目(20YDTPJC00310)。

摘　　要：针对2A14铝合金环件在轧制过程中经常出现的“鱼尾”缺陷,通过有限元模拟的方法研究了直径增长速度、轧制曲线及初始轧制温度对产生“鱼尾”深度的影响规律,并获得了最优工艺方案。继而进行了1∶1生产实验对该最优方案进行验证,所得2A14铝合金环件的“鱼尾”深度与预测值的偏差约为9.39%。通过单向拉伸实验分析了2A14铝合金环件径向、轴向和切向的屈服强度、抗拉强度和伸长率。所得最优的实验方案为:初始轧制温度取430℃、各阶段直径增长速度分别取3、5、8、1和1 mm·s^(-1),轧制曲线取直线形。Aiming at the‘fishtail’defect that often occurs in the 2A14 aluminum alloy ring part rolling process,the influence law of diameter growth rate,rolling curve and initial rolling temperature on the‘fishtail’depth was studied by finite element simulation method,and the optimal process scheme was obtained.Then the 1∶1 production experiment was carried out to verify the optimal scheme.The deviation between the‘fishtail’depth of 2A14 aluminum alloy ring part and the predicted value is about 9.39%.The yield strength,tensile strength and elongation of 2A14 aluminum alloy ring part in radial,axial and tangential directions were analyzed by uniaxial tensile experiments.The optimal experimental scheme is as follows:the initial rolling temperature is 430℃,the diameter growth rate of each stage is 3,5,8,1 and 1 mm·s^(-1),and the rolling curve is straight.

关 键 词：2A14铝合金 环件轧制 工艺优化 数值模拟 

分 类 号：TG335[金属学及工艺—金属压力加工]