Laser cleaning technology for pre-weld and post-weld treatments is a promising market due to its high efficiency and consistency, easy operation, and eco-friendly features. The weld quality influence of laser cleaning pre-treatment for the succeeding laser welding of the widely used industrial HSLA steel plates has been investigated in this work. The experimental results show that the laser cleaning pre-treatment can effectively remove the rusting and grease from the workpiece surface, create a corrugated micro-groove texture which could increase the absorption rate of the laser beam energy, help avoid the occurrence of pores and cracks in the weld, and significantly increase the mechanical properties of laser butt welding joints (30% for the tensile strength, 200% for the elongation). These experimental results should be helpful for developing hybrid laser cleaning & welding technologies for the emerging high-performance weld applications in practices.

中文翻译：

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通过对HSLA钢板进行激光对接焊接的激光清洗预处理来改善焊接质量

用于焊前和焊后处理的激光清洁技术具有高效率和一致性，易于操作以及环保的特点，因此是一个有前途的市场。在这项工作中，已经研究了激光清洗预处理对随后广泛使用的工业HSLA钢板的激光焊接的焊接质量影响。实验结果表明，激光清洗预处理可以有效去除工件表面的锈迹和油脂，形成波纹状的微沟槽纹路，可以提高激光束能量的吸收率，有助于避免出现气孔和裂纹在焊缝中，显着提高了激光对接焊缝的机械性能（抗拉强度为30％，延伸率为200％）。