【摘要】 本文介绍了晶闸管ＣＯ＿２弧焊电源的平特性、陡降特性和斜降特性的形成原理，提出并实现了ＣＯ＿２弧焊电源的一种理想的电流波形控制形式—双波控，分析了波控时晶闸管的滞后时间对焊接性能的影响，最后给出了常规ＣＯ＿２焊，普通波控形式下、双波控形式下的焊接电流和电压的实际波形。理论分析和工艺试验表明，双波控形式的晶闸管ＣＯ＿２弧焊电源具有良好的焊接性能。更多还原

【Abstract】 The author introduces the forming principle about constant voltage characteristic、steep-dropping Characteristic and slow-dropping characteristic of CO₂ thyristor power source,puts forward a kindof ideal current wave form control style of CO₂ arc welding power source-double wave control.Thewave control influence of thyristor lag-time on weldability is analyzed,and the real wave form of normalCO₂ welding current and voltage under common wave control and double-wave control is depicted.It isshown throngh theory analyzing and technical testing that double wave control CO₂ thyristor welding powersource has good weldability.更多还原