承压设备用E5015-N1焊条焊接烟尘物相及微观形态分析  

Phase and Micro Morphology Analysis of Welding Fume of E5015-N1 Covered Electrode for Pressure Equipment

作　　者：魏玉顺 马青军 韦晨[1] 党丽华[1] 孙明辉 武鹏博 WEI Yushun;MA Qingjun;WEI Chen;DANG Lihua;SUN Minghui;WU Pengbo(Tianjin Special Equipment Inspection Institute of Technology,Tianjin 300192,China;Fujian Special Equipment Inspection and Research Institute,Fuzhou 352100,China;Harbin Welding Institute Limited Company,CAM,Harbin 150028,China)

机构地区：[1]天津市特种设备监督检验技术研究院,天津300192 [2]福建省特种设备检验研究院,福建福州352100 [3]中国机械总院集团哈尔滨焊接研究所有限公司,黑龙江哈尔滨150028

出　　处：《电焊机》2024年第4期91-97,共7页Electric Welding Machine

基　　金：天津市市场监督管理委员会科技计划项目(2019-W13)。

摘　　要：针对承压设备用E5015-N1焊条焊接产生的烟尘进行了全面研究。利用自主研发的焊接材料施焊过程中毒害物质测定设备,使用沉淀与滤纸收集法收集了不同焊接电流条件下的烟尘样本,采用XRD及扫描电镜等技术对烟尘的物相及微观形态进行了分析。结果表明,过小或过大的焊接电流均会导致烟尘增加,渣壁过渡时会在熔滴表面产生大量烟尘,飞溅也是烟尘的产生源之一。E5015-N1焊条烟尘的主要物相是氟化物和氧化物,具有磁性的烟尘粒子在磁极偶作用力的驱动下形成链状聚集,单个或多个一次烟尘粒子会聚集形成具有“壳-核”形态的二次粒子。研究结果为焊接烟尘的控制提供了科学依据,并对焊接健康危害的评估提供了重要信息。The welding fume of E5015-N1 covered electrode for pressure equipment was collected by precipitation and filter paper collection method.The phase and microstructure of the fume were analyzed by XRD and SEM.The results show that too small or too large welding current will lead to the increase of welding fume.During the slag wall transition,a large amount of fume will be generated on the droplet surface,and the spatter is one of the source of fume.The main phase of E5015-N1 covered electrode fume is fluoride and oxide.The magnetic fume particles form a chain driven by the force of magnetic pole couple,and single or multiple primary fume particles will gather to form secondary particles with"shellcore"shape.

关 键 词：焊接烟尘 焊接电流 物相 形态 

分 类 号：TG422[金属学及工艺—焊接]