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在4 mm厚不锈钢激光-电弧双面焊接试验的基础上,研究了激光功率、电弧电流对接头形貌特征和接头特征量的影响规律,并对熔化效率进行了分析。结果表明,在较小的能量匹配下,双面焊接头呈现出激光焊与电弧焊的混合特征,随着热输入的增大,混合特征消失;增大激光功率,可使激光侧焊缝熔宽增加,而电弧侧焊缝熔宽减小,增加电弧电流,可使电弧侧焊缝熔宽增加,而对激光侧焊缝影响很小;激光功率和电弧电流增加都对焊缝中部最小熔宽有明显的增加;中部最小熔宽的深度随激光功率增加而增加,而电弧电流则起到相反的作用。在非熔透条件下,激光对电弧焊的熔化效率影响很明显,而电弧对激光焊的影响很小;在熔透条件下,增加激光功率、电弧电流对激光电弧双面焊的熔化效率都有显著的提高。
The effects of laser power and arc current on the topography of the joint and the characteristics of the joint were studied based on the 4 mm thick stainless steel laser-arc double-sided welding test. The melting efficiency was also analyzed. The results show that the hybrid features of laser welding and arc welding show the mixed features of laser welding and arc welding with smaller energy matching. As the heat input increases, the mixing characteristics disappear. When the laser power is increased, The width of the weld increases, while the weld width of the arc side decreases, increasing the arc current, the weld width of the arc side can be increased, while the laser side weld has little effect; laser power and arc current increase the minimum weld Width significantly increased; the depth of the central minimum melting increases with the increase of laser power, while the arc current has the opposite effect. Under the condition of non-penetration, the influence of laser on the melting efficiency of arc welding is obvious, while the influence of arc on laser welding is very small. Under the condition of penetration, the laser power and the arc current have the same effect on the melting efficiency There is a significant improvement.