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窄间隙焊采用轴向喷射过渡时，有时会出现侧壁熔透不良现象。为解决这一问题，本文在先期研究脉冲旋转喷射过渡技术的基础上，对窄间隙焊采用脉冲旋转喷射过渡ＭＡＧ焊接技术进行开发性探索，旨在为推动这一技术在我国焊接生产中的推广与应用寻找新途径。研究方法是采用脉冲轴向喷射过渡与脉冲旋转喷射过渡两组较佳的规范参数，进行窄间隙单层与双层焊，观察焊接工艺特性，在线能量相近的条件下，对比焊缝成形及侧壁熔透情况。试验结果表明，窄间隙内两种不同的熔滴过渡方式的弧态不同，采用脉冲旋转过渡可改善侧壁熔透，提高焊接生产率。因此，这一技术用于窄间隙焊是可行的。
Narrow gap welding using axial injection transition, sometimes there will be poor penetration of the side walls. In order to solve this problem, based on the preliminary study of pulsed jet injection transition technology, this paper explores the application of pulsed jet injection MAG technology in narrow gap welding. The purpose is to promote the popularization of this technology in China’s welding production Find new ways with apps. The research method is to use two groups of better specification parameters of pulse axial jetting and pulse jetting jetting transition to carry out narrow gap single-layer and double-layer welding. The welding process characteristics are observed. Under the condition of similar online energy, Wall penetration situation. The experimental results show that there are different arc states between two different droplet transition modes in the narrow gap, and the pulse rotation transition can improve the penetration of the sidewall and improve the welding productivity. Therefore, this technique is feasible for narrow gap welding.