纳米改性涂层及焊接工艺参数对无镀铜实心焊丝导电嘴磨损影响的研究进展

发布时间：2018-01-19 09:42

本文关键词： 无镀铜实心焊丝导电嘴磨损纳米改性涂层焊接工艺参数　出处：《材料工程》2017年12期 　论文类型：期刊论文

【摘要】：环保型无镀铜实心焊丝是气保护实心焊丝发展的主要趋势,而导电嘴磨损是其应用的瓶颈,综述了无镀铜实心焊丝表面纳米改性涂层及焊接工艺参数对导电嘴磨损的影响,认为:纳米颗粒在无镀铜实心焊丝与导电嘴的摩擦界面形成摩擦反应膜可以减少导电嘴的磨损;纳米改性涂层可使焊丝表面的油膜具有优异的润滑、导电、导热三重特性,是减少导电嘴磨损的可行途径;导电嘴的磨损随焊接电流的升高而增大,直流反接(Direct-current Electrode Positive,DCEP)时导电嘴的磨损比直流正接(Direct-current Electrode Negative,DCEN)时严重;电弧烧蚀和电流腐蚀是导电嘴磨损的主要机制。
[Abstract]:Environmental protection type solid wire without copper plating is the main trend of gas shielded solid wire, and the wear of conductive nozzle is the bottleneck of its application. The effect of nano-modified coating on the surface of copper free solid wire and welding process parameters on the wear of conductive nozzle is reviewed. It is considered that the friction reaction film formed by nano-particles at the friction interface between the solid wire and the conductive nozzle without copper plating can reduce the wear of the conductive nozzle. The nano-modified coating can make the oil film on the surface of the welding wire have excellent lubricating, conductive and heat conduction properties, which is a feasible way to reduce the wear of the conductive nozzle. The wear of conductive nozzle increases with the increase of welding current, and the DC reverse connection is Direct-current Electrode Positive. The wear of conductive nozzle in DCEP is more serious than that in Direct-current Electrode NegativeDCEN. Arc ablation and current corrosion are the main wear mechanism of conductive nozzle.
【作者单位】：北京工业大学材料科学与工程学院;多特蒙德工业大学材料工程研究所;
【基金】：国家自然科学基金资助项目(51574011) 北京市自然科学基金项目(2152008)
【分类号】：TG422.3
【正文快照】： 材料工程研究所,德国多特蒙德24427)LI Zhuo-xin1,WAN Qian1,ZHANG Tian-li 1,TILLMAN Wolfgang2(1College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;2Institute of Materials Engineering,DortmundUniversity of Techno

【相似文献】