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在有腐蚀性介质的环境中进行生产设备的焊接修理时,对焊接电源的可靠性有更高的要求。为此,推荐采用变压器式的交流弧焊机。其主要优点是维护简单、抗蚀性好,磁偏吹小。但其稳弧性差又使得在用YOH—13/45—11等牌号的焊条焊接特种钢时受到限制。提高燃弧稳定性的经济而有效的方法是采用专门的稳弧器,它能在电弧重复激励时瞬时提高起弧电压。对稳弧器的要求是:当弧压极性变换及偶然熄弧后50～100μa即产生脉冲振荡;对电弧间隙因熔滴过渡而造成的电压急剧
In the presence of corrosive media welding of production equipment repair, the reliability of the welding power have higher requirements. To this end, recommended the use of AC arc welding transformer. Its main advantage is simple maintenance, good corrosion resistance, small partial magnetic blow. However, its poor arc stability makes the use of YOH-13 / 45-11 grade welding electrodes such as welding of special steel is limited. A cost-effective and effective way to increase the stability of the arc is to use a special arc-stabilizing device that can instantaneously raise the arc-starting voltage as the arc repeatedly excites. The requirements of the stability of the arc is: when the arc voltage polarity and accidental extinction 50 ~ 100μa that pulse oscillation; the arc gap due to the drop caused by the rapid transition voltage