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随着普通低合金钢的推广应用,碱性低氢型焊条的用量大大增加。由于直流电焊机满足不了现实要求,因而不少焊条厂已试制并开始生产供应交直两用低氢碱性焊条,这种焊条可以用交流电焊机施焊,但空载电压过低时也不能应用(一般要求空载电压在60V以上)。我国过去生产的交流手弧焊机空载电压较低,皆在60V左右,例如BS——330型手弧焊机小电流挡为70伏,焊机不改装可以用,但这挡只能输出180安培电流,适
With the promotion and application of ordinary low-alloy steel, the amount of alkaline low-hydrogen electrode greatly increased. As the DC welding machine can not meet the real requirements, and thus many welding rod factory has trial production and begin production and supply of AC dual-use low hydrogen alkaline electrode, this electrode can be used AC welding machine welding, but when the no-load voltage is too low can not be applied (Generally require no-load voltage above 60V). For example, BS - 330 hand arc welding machine with a low current of 70 volts, welding machine can be used without modification, but this block can only be output 180 amps current, suitable