锻压技术

工艺参数对汽车铝合金封板成形质量的影响及模具寿命预测

英文标题：Influence of process parameters on forming quality for automobile aluminum alloy sealing plate and prediction of die life

作者：黄忠史召峰王理想

单位：安徽粮食工程职业学院安徽工业经济职业技术学院安徽威灵汽车部件有限公司

关键词：冲压最大减薄率田口试验法模具磨损冲压次数

分类号：TG386.3

出版年,卷(期):页码：2022,47(7):107-111

摘要：

以铝合金封板为研究对象，对冲压过程中极易出现的冲裂缺陷进行了分析。以成形后封板的最大减薄率为评估对象，应用有限元分析法，开展了关于入模圆角、压边力以及凸凹模间隙的正交试验，研究了各因素对最大减薄率的影响程度，并基于信噪比，通过田口试验法对冲压工艺参数进行了优化。另外，基于Archard磨损模型，对优化工艺下的冲压模具磨损情况进行了研究，建立了冲压次数与冲压模具磨损之间的函数拟合公式，比较了单次磨损预测寿命与平均值磨损预测寿命之间的误差大小，合理地预测了冲压模具寿命。经实际冲压生产表明，此研究具有一定的指导作用，有效地降低了时间成本。

For the aluminum alloy sealing plate, the crack defects which were easy to appear in the stamping process were analyzed. Then, taking the maximum thinning rate of the formed sealing plate as the evaluation object, the orthogonal experiments on the die fillet, blank holder force and clearance between punch and die were carried out by the finite element analysis method, and the influence degrees of various factors on the maximum thinning rate were studied. Based on the signal-to-noise ratio, the stamping process parameters were optimized by Taguchi algorithm. In addition, based on the Archard model, the wear conditions of stamping mold under the optimized process was studied, the function fitting formula between stamping times and stamping die wear was established, the error between the single wear prediction life and the average wear prediction life was compared, and the die life was reasonably predicted. The actual stamping production shows that the research has a certain guiding role and effectively reduces the time cost.

基金项目：

安徽省高等学校自然科学研究项目（KJ2021A1559）

作者简介：黄忠（1981-），男，学士，副教授 E-mail：huangz198110@163.com

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