摘要:
GMAW由于其自身诸多优点,在焊接生产中已经占主要地位。但焊接过程线能量较大、成型不如GTAW、飞溅问题和全位置焊接性不佳,成为限制其在高端产品上应用的弱点。随着先进的电力电子技术和数字化控制技术的发展,先进的GMAW焊接技术有望解决上述问题。本文综述了目前国际先进的GMAW焊接技术,重点介绍了德国CLOOS的CP技术,EWM的Coldarc焊接技术,福尼斯的CMT(包括CMT-Pluse MIX)技术以及PLT的Super-MIG技术,上述方法通过先进的逆变技术和控制技术在溶滴过渡、送丝控制、降低热输入等方面有效地改善了GMAW的上述弱点,在降低焊接过程线能量、改善焊接过程飞溅和焊缝成型、提高焊接质量和效率等方面取得了很好的效果。
Abstract:
GMAW plays an important role in the welding engineering for its good characteristics. However,its shortcomings are high heat input,poor shaping,welding spatter and poor flexibility in all position welding which limit it using in important products. The development of power electronics and digital control technology is expected to solve above problem. In this paper is summarized the development of advanced GMAW technology,including CP welding technology,coldarc welding technology,CMT-Pulse MIX,and Super-MIG welding technology. These advanced technologies adopt advanced inverter and controlling technology,make much improvement in droplet transition,welding spatter control,low heat input and the weld quality and efficiency are subsequently improved.
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