电弧螺柱焊中实现螺柱的低速送进

螺柱送进速度是电弧螺柱焊中的一个重要参数。基于对工程中广泛应用的电磁式螺柱焊枪工作原理的深入分析，提出螺柱低速送进的同时提供足够的挤压力可以实现电弧螺柱焊接，研制开发了步进式电弧螺柱焊枪及其控制系统。作为实现螺柱低速送进的焊枪，其动力机构为步进电机，螺旋传动装置为运动机构主体，保证螺柱低速送进时对接头处金属具有足够的挤压力。试验结果表明，采用步进式电弧螺柱焊枪，螺柱低速送进可以完成电弧螺柱焊过程；弯曲试验结果表明螺柱焊接头能满足使用要求。

Realization of slow stud plunge in arc stud welding

Stud plunge speed is one of the important parameters in arc stud welding.Through the analysis of operating principle of electromagnetic welding gun which was widely employed in engineering,it was proposed that stud welding procedure could be realized even with a slower plunge speed,however an adequate extrusion force was needed simultaneously.An arc stud welding gun based on stepping motor and its control system were developed to accomplish the slow plunge arc stud welding.A stepping motor was taken as actuating unit and screw-driven device as moving unit,to furnish the adequate extrusion force for melted metal during the course of the slow plunge.It was indicated from test results that the stepping arc stud welding gun could realize the welding process of slow stud plunge.Further more,the result of bend test proved that the joint was fit for service.