锻压技术

基于CAE的QP980超高强钢零件冲压开裂及回弹控制

英文标题：Crack and springback control of ultra high strength steel QP980 parts based on CAE

作者：陈东辉 1 2 张建 1 2

单位：（1.宝山钢铁股份有限公司研究院上海 201900 2.汽车用钢开发与应用技术国家重点实验室（宝钢）上海 201900）

关键词：超高强钢开裂回弹 CAE分析 Sigma

分类号：TG386

出版年,卷(期):页码：2018,43(5):0-0

摘要：

在QP980超高强钢应用过程中，针对某车型前地板加强纵梁零件的开裂及回弹控制不稳定问题，借助有限元软件AUTOFORM及其Sigma分析功能对零件进行全流程仿真评估，对问题原因进行全面分析，找出关键影响因素，提出优化工艺方案，并通过零件实冲结果进行验证。结果表明，优化后的工艺方案零件最大减薄率下降7.3%，回弹量控制在合理范围内，通过实冲验证，冲压开裂得到消除，尺寸精度达到1 mm控制要求。提出的优化工艺方案提高了零件成形性，回弹得到改善，现场实冲结果验证了CAE分析结果的正确性，该方法可用于指导其他超高强钢零件的生产。

In view of the cracking and instability of springback control of the front floor reinforced rail parts of an automobile in the application process of

ultra high strength steel QP980, the whole process was simulated and evaluated with AUTOFORM software and its Sigma analysis function. The key influencing factors were found out by comprehensively analyzing of the problems,and the optimized process was raised and verified by actual stamping test. The results show that the maximum thinning rate of parts is reduced by 7.3%, and the springback quantity is controlled within a reasonable range. The stamping cracking is eliminated, and the dimensional accuracy is up to 1 mm, meeting the control requirement. The formability and springback of parts were improved by the optimized process, and the correctness of CAE analysis was verified. This method has a guiding significance for the following application of ultra high strength steel parts.

基金项目：

作者简介：陈东辉（1982-），男，硕士，工程师 Email：chendonghui@baosteel.com

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