铸铁冷焊的氧化铁系低碳钢焊条的研制  

Development of a mild steel electrode for non-preheating welding of cast iron

作　　者：徐永鹤[1,2] 王惜宝[1,3] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]平壤机械大学材料工程系 [3]天津市先进连接技术重点实验室,天津300072

出　　处：《焊接技术》2011年第7期37-39,43,共4页Welding Technology

摘　　要：针对采用低碳钢焊条在冷焊铸铁时极易出现白口层、抗裂性差的问题,本文利用氧化铁皮和石墨,研制了铸铁冷焊用氧化铁系低碳钢焊条,在半熔化区和焊缝区降低了白口层和裂纹的发生。Issues of non-preheating welding of cast iron with mild steel electrode were studied in this paper. A mild steel electrode was developed for non-preheating welding of cast iron. In the non-preheating welding of cast iron,chill layer could come into exists and the crack resistance would become worse. A mild steel electrode using scale and graphite was developed for the non-preheating welding of cast iron. Welding experiment results showed that the probability of chill layer coming into exists and crack becomes lower.

关 键 词：铸铁 冷焊 焊条 低碳钢 白口层 裂纹 

分 类 号：TG422.1[金属学及工艺—焊接]