锻压技术

AZ31B镁合金方盒形件拉深成形工艺参数研究

英文标题：Research on drawing forming process parameters of AZ31B magnesium alloy square-box parts

作者：官英平杨柳段永川

分类号：TG386

出版年,卷(期):页码：2014,39(6):45-49

摘要：

针对AZ31B镁合金方盒形件进行拉深成形工艺试验,分析了单个工艺参数的变化对盒形件拉深成形过程的影响，在其他因素不变的条件下，凹模温度在150~300 ℃范围内，成形深度随温度升高而增大，在300 ℃时成形深度达到最大值；凸模温度保持在120 ℃左右，差温拉深效果较为明显；压边间隙调整到1.3t(t为板材厚度）时，拉深深度最大；拉深速度在30 mm·min-1时成形深度最大。确定了影响拉深成形深度的各工艺参数的先后顺序为：压边间隙、凸模温度、凹模温度和拉深速度。运用正交试验方法进行各工艺参数优化组合，结果表明，采用最优工艺参数组合可以提高AZ31B镁合金方盒形件拉深成形的成形深度。

Through deep drawing test of AZ31B magnesium alloy square-box parts, the effects of deep drawing process under single process parameter changes were analyzed. The forming depth value rises with the temperature increasing when the die temperature is among the range of 150-300 ℃ and other factors were unchanged, and the maximum value of forming depth is achieved at 300 ℃.The differential temperature drawing effects are obvious when the punch temperature is kept about 120 ℃.The maximum value of forming depth is achieved when the blank-holder gap is 1.3t (t is the depth of sheet)or under the drawing speed of 30 mm·min-1. The determined sequence of process parameters which influences the drawing depth are as follows: blank-holder gap, punch temperature, die temperature and deep drawing speed. Orthogonal test method was used to optimize the processing parameters, and the result shows that the forming depth of AZ31B magnesium alloy square-box parts can be improved by using the optimized combination of processing parameters.

基金项目：

河北省科技支撑计划资助项目（11212104D）

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