基于等离子弧焊的低碳钢耐磨粉末堆焊工艺研究  

Research on Surfacing Welding Processing of Wear-resisting Powder for Low Carbon Steel Based on Plasma Arc Welding

作　　者：石端虎[1] 鲁孟云 沙静[1] 杨峰[1] 

机构地区：[1]徐州工程学院机电工程学院,江苏徐州221018

出　　处：《徐州工程学院学报（自然科学版）》2017年第4期13-17,共5页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：江苏省自然科学基金面上项目(BK20141143);江苏省高校自然科学研究基金重大项目(16KJA430003)

摘　　要：研究了不同焊接工艺参数下的Fe90铁基粉末堆焊层的性能与组织.试验结果表明:在其它参数一定的条件下,加快送粉速度可提高堆焊层的硬度,并可减少堆焊层的磨损量;增大焊接电流也可提高堆焊层的硬度,并提高堆焊层的耐磨性,同时可使母材与堆焊层紧密结合,可提高堆焊层的使用寿命.确定的较佳焊接工艺参数为:保护气流量9L/min,离子气流量0.6L/min,送粉速度25g/min,送粉气体流量1.8L/min,焊接电流85A.Performance and structure of Fe90 iron-based surfacing welding layer under different welding parameters were studied in the paper.The experimental results show that under constant conditions of other parameters,speeding up the powder delivering can increase the hardness of the surfacing layer and reduce its wear extent;increasing the welding current can also increase the hardness and wear-resisting property of surfacing welding layer;mixing the base metal and surfacing layer can improve its operational life span.The optimum welding process parameters are as follows：protection gas flow 9 L/min,ion gas flow 0.6 L/min,feeding speed 25 g/min,powder feed gas flow 1.8 L/min and welding current 85 A.

关 键 词：等离子弧焊 低碳钢 耐磨粉末 堆焊工艺 

分 类 号：TG455[金属学及工艺—焊接]