从实践已知,焊丝——导电咀系统的工作状态对电弧焊过程稳定性具有很大的影响。然而,现有的有关导电咀结构及其制造所用材料的选用方面的资料,只在某些情况下适用,与之相关的对导电方式的选择研究很少。为此,首先必须研究焊丝——导电咀系统相接触的导电特点,确定其主要工作特 It is known from practice that the working state of the wire-conducting nozzle system has a great influence on the stability of the arc welding process. However, the existing information on the selection of the conductive nozzle structure and the material used in the fabrication of the conductive nozzle structure is only applicable in some cases, and the related research on the choice of conductive mode has been rarely studied. To this end, we must first study the conductive characteristics of wire - conductive nozzle contact system to determine the main work of special