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近年来自保护药芯焊位半自功准焊在国外已得到了越来越广泛的应用,这种半自动堆焊方法所使用的设备与CO_2气体保护焊机相似,但不必使用保护气体,在堆焊枪上有一个绝缘的焊丝导嘴。这种堆焊方法的最突出优点是生产率高,这主要是因为(1)焊丝是连续送进的,没有像手工电弧堆焊时那样因换焊条而造成时间间断;(2)是使用较高的电流密度,使得堆焊生产率相当于手工电弧堆
In recent years, since the protection of flux-core semi-auto-quasi-welding in foreign countries has been more and more widely used, this semi-automatic welding method used equipment and CO2 gas shielded welding similar, but do not have to use protective gas, There is an insulated wire tip on the torch. The most prominent advantage of this surfacing method is the high productivity, mainly because (1) the wire is fed in continuously, there is no time difference caused by the welding rod as in the manual arc welding; (2) Current density, making the surfacing welding productivity equivalent to manual arc reactor