电火花堆焊技术在钢结构接头防腐中的应用  

Application of Electric Spark Surfacing Welding Technology on Corrosion Resistance of Steel Construction Joint

作　　者：周蓉[1] 

机构地区：[1]陕西职业技术学院,陕西西安710100

出　　处：《铸造技术》2014年第4期787-789,共3页Foundry Technology

摘　　要：采用电火花堆焊工艺对HRB 400三级钢焊接接头表面进行堆焊处理,利用扫描电镜对堆焊层组织形貌进行观察和分析,采用5%NaCl溶液通过浸泡实验进行耐腐蚀性测试。结果表明,堆焊层与基体之间为冶金结合。经电火花堆焊后,焊缝表面组织得到细化。堆焊层在腐蚀介质与焊缝之间形成阻隔,一定程度上降低了焊缝的腐蚀倾向,提高了焊缝的耐蚀性。The aluminum coating on HRB 400 was prepeared by electric spark surfacing welding technology. The microstructure and corrosion resistance of the coating were studied by SEM and immersion. The results show that the combination between surfacing layer and matrix is metallurgical combination, and the surface microstructure is refined after electric spark surfacing welding. The corrosion resistance of the coating is increased by the hardfacing layer.

关 键 词：电火花堆焊 结构钢 耐蚀性 

分 类 号：TG455[金属学及工艺—焊接]