蒲雨龍， 蔡曉君， 朱加雷， 張玉平
(北京石油化工學院 機械工程系， 北京 102617)
摘 要: 為改善弧焊過程的動特性，減少飛濺， 對一種并聯(lián)式IGBT波形控制器的波控特性進行了實驗研究，研究了該波形控制器對焊接過程焊機動特性的影響， 并分析了波控參數(shù)對焊接熔滴過渡過程的影響。 結(jié)果表明： 并聯(lián)式波控是一種低成本的、 降低飛濺的有效方法， 可以優(yōu)化焊接電流的波形，抑制短路末期的峰值電流， 確保短路末期液橋的柔順破斷， 削弱燃弧初期電弧對熔池的沖擊。
關(guān)鍵字: 弧焊； 熔滴過渡； 波形控制
CAI Xiao-jun, ZHU Jiao-lei, ZHANG Yu-ping
（Department of Mechanical Engineering,
Beijing Institute of Petrochemical Technology,
Beijing 102617， China）
Abstract: In order to improve the dynamic performance of the welding process and reduce spattering, the waveform control performance of a parallel IGBT waveform controller was tested. The influence of the waveform controller on the dynamic performance of the welding machine in welding process was studied, and the influence of the waveform control parameters on the welding droplet transfer process was analyzed. The results show that the parallel waveform control is a low cost and effective method of lowering spattering. By means of the control method, the waveform of welding current can be optimized, the peak current in the ending time of the short-circuiting can be restrained and the liquor bridge can be softly broken, and the impact of arc to the molten pool in the instant of the arc re-triggering can be weakened.
Key words: arc welding; droplet transfer; waveform control
