一、前言近年来,随着电子技术的不断发展,用于气体保护焊的晶体管弧焊电源逐渐完善,各种型号的脉冲弧焊电源相继出现在欧洲市场。与此同时,大量新钢种、新合金在工业生产中的推广应用,使人们不断探索如何选用最佳的保护气体进行焊接,以得到理想的熔滴过渡、最高的熔敷率和优良的焊接接头。特别是弧焊机器人 I. Introduction In recent years, with the continuous development of electronic technology, the arc welding power source for gas shielded welding has been gradually improved. Various types of pulse arc welding power source have appeared in the European market one after another. At the same time, a large number of new types of steel, new alloys in the industrial application of the promotion, so that people continue to explore how to choose the best protective gas for welding, in order to get the ideal droplet transfer, the highest deposition rate and excellent welding Connector. Especially the arc welding robot