全数字化多功能焊接电源平台

Full digitalized welding power platform with multi-function purposes

摘要: 建立了包括焊条电弧焊、氩弧、短路过渡、单脉冲和双脉冲在内的五种工艺的焊接电源平台,该平台由焊接电源本体、送丝电机及冷却水箱构成.分析了它的工作原理并阐述了主要功能.重点讨论了短路过渡、单脉冲和双脉冲MIG/MAG焊的工艺全数字实现原理及过程,进行了额定400A的焊接电源平台试验.结果表明,采用全数字控制方法实现多种气体保护焊焊接工艺是完全可行的,在不改变硬件电路情况下,仅仅改变软件就可以满足不同焊接工艺需求,且焊接性能优良.

Abstract: A welding platform used in shielded metal arc welding, TIG, CO₂ short-circuit GMAW, single pulsed MIG/MAG and double pulsed MIG/MAG welding is established.The platform is composed of welding power, wire feeder and water cooler, which operation principles and main function are analyzed.The full digital control theories of short circuiting transfer, single pulsed and double pulsed MIG/MAG are explained in detail.Experimental results of a 400 A prototype show that it is feasible to apply different welding methods only by changing software and without changing any hardware, and the welding performance is also perfect.