采用扫描电镜和体视显微镜研究了固体润滑剂对无镀铜焊丝导电嘴磨损性的影响. 结果表明，随着固体润滑剂成分的改变，导电嘴磨损形式发生变化，导电嘴质量损失率和导电嘴孔径磨损率随之改变；焊丝表面涂敷以石墨 + 纳米Fe2O3和石墨 + 纳米Fe3O4为主的固体润滑剂时，磨损形式以轻微磨粒磨损为主，导电嘴质量损失率和孔径磨损率显著降低，分别为0.27%和0.31%、16.2%和22.3%，导电嘴温度是影响固体润滑剂润滑性的重要因素，以石墨 + 纳米Fe2O3和石墨 + 纳米Fe3O4为主的固体润滑剂能实现从室温到较高温度范围内的连续润滑.
The effects of solid lubricants on contact tip wear performance of non-copper coated solid wire were investigated by scanning electron microscopy (SEM) and stereoscopic microscope. It was found that the wear form of contact tip varied with composition of solid lubricant, therefore, the mass and aperture wear loss rate of contact tip were changed. When surface coatings of non-copper coated solid wire were mainly composed of graphite + nano Fe2O3, the mass and aperture wear loss rate of contact tip were 0.27%, 16.2%, respectively. Coated with graphite + nano Fe3O4, contact tip wear perfermance of non-copper coated solid wire were better, the mass and aperture wear loss rate wear of contact tip were 0.31%, 22.3%, respectively. Slight abrasive wear was wear form of contact tip. Contact tip temperature had an important role on the lubricity of solid lubricants, the solid lubricants mainly composed of graphite + nano Fe2O3 or graphite + nano Fe3O4 can achieve continuous lubrication from room temperature to higher temperature range.
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