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本文阐述了焊机轻量化及节能的途径,指出了提高交流焊机的输出频率是行之有效的,并选定用可控硅单相并联逆变器作为焊机的核心电路。工艺试验表明:电弧弹性极好,焊条熔化率及焊缝熔深都高于普通AX及BX型焊机,碱性焊条施焊时焊缝金属含氢量低于AX焊机反接法。TIG法焊接铝合金阴极雾化作用比工频交流强,可以大大降低对铝合金焊前表面处理的要求。焊机空耗和效率赶得上ZXG、AX及BX型焊机。
This paper describes the ways to reduce the weight of welders and save energy. It is pointed out that it is effective to improve the output frequency of AC welders and choose the SCR single-phase parallel inverter as the core circuit of welder. The technological tests show that the arc has excellent flexibility, the melting rate of the electrode and the penetration depth of the weld are higher than those of ordinary AX and BX welders. The hydrogen content of the weld metal in the alkaline welding is lower than that of the AX welder. TIG welding aluminum alloy cathode atomization than the frequency AC strong, can greatly reduce the aluminum alloy welding surface treatment requirements. Welder consumption and efficiency to catch up ZXG, AX and BX-type welder.