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介绍了研制机器人MIG/MAG焊用ZP7-400逆变电源中处理的几个问题,将整个焊接过程分为引弧期和焊接期,并在此两个时期中采取不同的控制要点,在引弧期中充分提高电源响应速度,力求提高引弧成功率和快速建立稳定弧长,在焊接期中则采用复合型外特性和电子电抗器以提高焊接稳定性和抑制飞溅,为此,从焊接外特性选取、提高引弧成功率和控制动特性等方面进行了试验,其研究结果已用于NZM-400弧焊机器人MIG/MAG焊接系统和NBC-400焊机中。
This paper introduces some problems in the development of ZP7-400 inverter for MIG / MAG welding. It divides the entire welding process into arc starting and welding, and takes different control points in these two periods. During the arc period, the response speed of the power supply is fully improved, and the success rate of arc starting and the establishment of a stable arc length are rapidly achieved. In the welding period, composite external characteristics and electronic reactors are used to improve the welding stability and suppress splashing. Therefore, Selection, improvement of pilot arc success rate and control of dynamic characteristics and other aspects of the test results have been used in NZM-400 arc welding robot MIG / MAG welding system and NBC-400 welder.