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| CO2激光焊接接头性能的试验分析 | |
| 引用本文： | 伍强,杨永强,徐兰英.CO2激光焊接接头性能的试验分析[J].现代制造工程,2011(9). |
| 作者姓名： | 伍强 杨永强 徐兰英 |
| 作者单位： | 1. 华南理工大学机械与汽车工程学院,广州510640;广东技术师范学院数控技术广东普通高校重点实验室,广州510635 2. 华南理工大学机械与汽车工程学院,广州,510640 3. 广东技术师范学院数控技术广东普通高校重点实验室,广州,510635 |
| 基金项目： | 中国博士后科学基金资助项目，广东普通高校重点实验室开放基金项目，中央高校基本科研业务费专项资金资助项目 |
| 摘 要： | 采用同轴和侧吹保护气体控制等离子的方法,对车身专用高强度镀锌钢板的CO2激光焊接接头的性能进行了大量的焊接试验研究,并对焊缝进行显微组织分析和相关的机械性能检测.研究激光焊接高强度镀锌钢板的工艺参数对焊接接头的抗拉强度、屈服强度和延伸率等机械性能指标的影响规律,优化了激光焊接的工艺参数.试验表明随着激光焊接过程中输入线能量的增加,焊缝区的硬度值逐渐下降,拉伸试件断裂的区域、断口韧窝大小及分布情况各不同,且焊缝的拉伸裂纹均向母材扩展,说明激光深熔焊接可以有效地避免高强度镀锌钢板焊接接头的软化. |
| 关 键 词： | 激光焊接 薄钢板 接头性能 |
Investigation on joint performances of CO2 laser welding |
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| WU Qiang,YANG Yong-qiang,XU Lan-ying.Investigation on joint performances of CO2 laser welding[J].Modern Manufacturing Engineering,2011(9). | |
| Authors: | WU Qiang YANG Yong-qiang XU Lan-ying |
| Affiliation: | WU Qiang1,2,YANG Yong-qiang1,XU Lan-ying2(1 School of Mechanical & Automotive Engineering,South China University of Technology,Guangzhou 510640,China,2 Numerical Control Technology Key Laboratory of Colleges of Guangdong Province,Guangdong Polytechnic Normal University,Guangzhou 510635,China) |
| Abstract: | Adopting coaxial and side blown protective gas to control plasma,many experiments of CO2 laser welding of zinc coated high strength steel to vehicle body are finished to welding joints,joint microstructure and stress-strain curve of specimen are investigated.Technology parameters of CO2 laser welding of zinc coated high strength steel affect joints' mechanical properties such as tensile strength,yield strength and extensibility,the experimental result shows that hardness value in weld zone becomes low with ... |
| Keywords: | laser welding sheet steel joints performance |
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