文档介绍：李斌等: 激光拼焊板在汽车制造中的应用及相关工艺研究
5激光杂志6 2012 年第 33 卷第 1 期 LASER JOURNAL( Vol. 33. No. 1. 2012) 59
激光拼焊板在汽车制造中的应用及相关工艺研究
李斌1, 郭小燕2, 路洪洲3
1. 重庆交通大学机电与汽车工程学院, 重庆 400074;
2. 重庆市光学机械研究所重庆 401123;
3. 华东理工大学, 上海 200237
提要: 采用激光拼焊技术把不同材料, 不同厚度和具有涂层的板材焊接在一起, 形成可冲压车身外板。实践证明: 这种新技术和传统
生产工艺相比, 使汽车车身重量减轻, 刚度增强, 提高了生产效率和材料利用率, 经济效果明显。但是应重视激光切割和拼焊后工件边缘出现
裂纹和淬硬组织及对后续工艺及产品质量的影响。
关键词: 激光拼焊; 车身; 应用; 微裂纹
中图分类号: TH161: V270. 2 文献标识码: A 文章编号: 0253- 2743(2012) 01- 0059- 02
Research on process and application of Laser Tailor Welded Blanks in automobile manufacturers
LI Bin1, GUO Xiao- yan2, LU Hong- zhou3
1. Chongqing Jiaotong University, Chongqing 400074, China;
2. Chongqing Institute of Optics and Mechanics, Chongqing 401123, China;
3. East China University of Science and Techndogy, Shanghai 200237, China
Abstract: Laser Tailor Welded Blanks (TWBs) are welded blanks that consist of dissimilar material, thicknesses, shapes and/ or coating prior to stamping it
into the desired shapes in automobile manufacturers. Contrasted with traditional technology, it has been proved, the advantages of using TWBs include weight
reduction, strength increase, productivity increase, material utilization increase and cost reduction. But it should be paid attention to the cracks and quenching
microstructures at the edge of workpieces made by laser cutting and welding which will influence the