CO_2气体保护焊在焊接过程中,由于电压、电流、焊丝伸出长度和电弧稳定性等因素的影响,一般都要产生飞溅。这些飞溅的渣滓牢固地粘附在喷嘴内壁,堵塞了喷嘴的气流孔道,使保护气体产生偏心,焊接熔池得不到良好的保护,从而使焊缝极易产生气孔等缺陷,常常不得不更换新的喷嘴。 CO_2 gas shielded welding in the welding process, due to voltage, current, wire length and arc stability of the impact of other factors, generally have to produce splashes. These splashed dregs adhere firmly to the inner wall of the nozzle, clogging the nozzle’s gas flow channel, so that the protective gas is eccentric, the weld pool is not well protected, so that the weld is prone to defects such as pores, often have to be replaced New nozzle.