提出了一种MIG-超声复合焊接方法,设计了一套MIG-超声复合焊接装置。主要包括两个部分:固定焊枪和超声装置的焊接工装平台和基于单片机控制步进电机的移动平台。通过软件设计,使焊接过程简单、控制方便,为进一步研究超声对MIG焊接的影响,提供了实验基础。应用所设计的焊接装置,采用平板堆焊的方法,对低碳钢板进行对比试验,初步结果发现超声有促进熔滴过渡的作用。 A MIG-ultrasonic composite welding method is proposed, and a set of MIG-ultrasonic composite welding equipment is designed. Mainly consists of two parts: fixed welding torch and ultrasonic welding fixture platform and based on the single-chip stepper motor control of the mobile platform. Through the software design, the welding process is simple and the control is convenient. The experimental basis is provided for further study on the effect of ultrasound on MIG welding. Application of the designed welding device, the method of flat surfacing welding of low carbon steel comparative tests, the preliminary results found that ultrasound can promote droplet transfer role.