电弧增材制造成形工艺影响因素研究

采用Ti6321A焊丝进行电弧增材制造,研究了焊枪姿态和摆动参数等工艺因素对成形的影响。结果表明,不同的焊枪角度对增材制造焊缝堆焊成形形貌具有显著的影响,当焊枪姿态由推焊变化到拉焊时,焊缝熔宽减小,余高变高,即焊缝表面铺展能力减弱;焊缝熔深在焊枪垂直时达到最大值。焊枪摆动会使增材制造表面呈现纹路特征,纹路之间的宽度直接由摆长参数决定,摆宽对焊缝熔宽有显著影响,呈近似线性关系。

Study on the Influencing Factors in the Forming Process of Arc Additive Manufacturing

Arc additive manufacturing was carried out by using Ti6321A wire,and effects of welding torch poses and swing parameters on the forming were investigated.The results show that the welding torch angle has a significant effect on the formation of additive manufacturing by push welding.With the pose of welding torch changing from pushing to pulling,the weld width gets smaller and the weld reinforcement becomes higher,indicating that the weld surface spreading ability has declined;the weld penetration reaches the maximum value when the torch is vertical.The swinging of welding torch will present the surface with lines,the width between which is determined by the length of the pendulum,and the weld width has a linear growth with the swing width.