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前言 CO_2气体保护焊的出现是焊接技术领域的一个重要发展。国内外的大量经验证明,CO_2气体保护焊工艺能否成功地用于生产,主要决定于焊接电源能否满足CO_2焊接工艺的特殊要求。近年来我国在推广应用CO_2焊接工艺的过程中,出现了许多不同类型的CO_2焊接电源。但是由于对电源的工艺性能缺乏深入的研究,不能保证各种电源具有良好的工艺性能,在一定程度上影响了这项先进焊接技术的迅速
Preface The emergence of CO_2 gas shielded welding is an important development in the field of welding technology. A large number of domestic and foreign experience shows that CO_2 gas shielded welding process can be successfully used in the production, mainly depends on the welding power supply can meet the special requirements of CO_2 welding process. In recent years, China in the promotion and application of CO_2 welding process, there have been many different types of CO_2 welding power supply. However, due to the lack of in-depth research on the power performance of the technology, can not ensure that a variety of power has good process performance, to a certain extent, affected the rapid advancement of welding technology