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分析了激光深熔焊接的小孔机制的数学模型。研究了焊接熔池的稳定性与金属蒸气压的关系及金属蒸气压与等离子体的关系。着重研究了激光焊接工艺参数 (包括激光模式、功率、聚焦条件、焊接速度和辅助吹气 )对焊接熔池行为的影响 ,最后 ,还研究了熔池行为与焊缝组织结构和缺陷 (如气孔、裂纹等 )的关系。
The mathematical model of pinhole mechanism for laser deep penetration welding is analyzed. The relationship between the stability of weld pool and metal vapor pressure and the relationship between metal vapor pressure and plasma were studied. The effects of laser welding process parameters (including laser mode, power, focusing conditions, welding speed and auxiliary air blowing) on weld pool behavior were studied. Finally, the weld pool behavior and weld microstructure and defects , Cracks, etc.).