车用高强钢板的光纤激光焊接实验研究  

Study of Fiber Laser Welding for Automotive High Strength Steel

作　　者：王鹏[1] 辛立军[1] 黄涛[2] 王智勇[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124 [2]宝钢股份宝钢分公司,上海201900

出　　处：《应用激光》2009年第4期286-289,共4页Applied Laser

摘　　要：采用IPG YLR-6000光纤激光器对宝钢生产的汽车用700MPa高强钢板进行了焊接试验,并对焊接样品的焊接区和母材进行显微组织分析,结果表明焊接区域经过激光快热快冷后形成均匀细小的等轴晶,平均晶粒尺寸较母材细小。对焊接后样品进行力学性能测试,试样的断裂位置为母材,表明焊接对母材的力学性能的影响不大,可以使用光纤激光实现车用高强钢的高质量焊接。700MPa high strength motor steel plate producted by Baosteel were welded by IPG YLR-6000 fiber laser,and the welding zone and parent materials prepared for microstructure analysis, results showed that welding region experiencing high cooling rate become to isometric crystalis which is smaller than parent materials. After the welding sample＇s tensile testing, the specimens fracture location is in the parent materials, the resuits show that welding on the mechanical properties of materials has little influence, you can use the fiber laser implementation to achieve high quality high-strength steel welding.

关 键 词：光纤激光 焊接 高强钢 汽车工业 

分 类 号：TN248[电子电信—物理电子学] TG456.7[金属学及工艺—焊接]