锻压技术

基于有限元的S形梁错位拼焊板拉深实例研究

英文标题：Research on the drawing of S-shaped girder by dislocation tailor-welded blank based on FEM

作者：张稳定佘威黄永生崔礼春

分类号：TG386.32

出版年,卷(期):页码：2015,40(8):20-23

摘要：

以有限元数值模拟技术为平台，对某S形梁的成熟工艺进行分析优化，同时对比错位激光拼焊技术，验证错位激光拼焊技术在提升S形梁材料利用率、降低成形性风险以及减少工序上的有效性。通过CAE模拟及实物验证得知，采用错位激光拼焊技术后，工序由7序减少至6序，材料利用率由49.4%提升至55.8%，单台车焊缝长度由998 mm缩减至740 mm。此外，采用错位拼焊后，焊缝处可以增加2个挡料销，焊缝偏移量由30 mm减少至10 mm以内。批量生产验证无问题，可产生良好的经济效益。

The mature technology of S-shaped girder was analyzed and optimized by FEM simulation, and the effectiveness of dislocation tailor-welding technology in improving material utilization, reducing the risk of forming and process steps was verified by comparidg with dislocation tailor-welding technology. CAE simulation and verification show that the process steps reduces from seven steps to six steps，the material utilization rate increases from 49.4% to 55.8%, and the welded length using single trolley is shortened from 998 mm to 740 mm. Besides, the weld is added with two block material pins and the weld offset reduces from 30 mm to less than 10 mm by using staggered welding. In conclusion, the batch production shows few problems, which brings good economic benefits.

基金项目：

国家科技重大专项（2014ZX04002041）

张稳定（1989-），男，学士，助理工程师

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