高铬铸铁型自保护药芯焊丝的研制  

DEVELOPMENT OF THE HIGH-CHROMIUM CAST IRON FLUX CORED WIRE FOR SELF-SHIELDED

作　　者：王移山[1] 李少华[1] 潘川[1] 柳小坚[1] 

机构地区：[1]安泰科技股份有限公司,北京100081

出　　处：《粉末冶金工业》2006年第3期14-18,共5页Powder Metallurgy Industry

摘　　要：所研制的药芯焊丝采用自保护方式,焊接工艺性能良好。堆焊层表面裂纹细密,呈网状分布。堆焊金属合金系为Fe-Cr-C,微观组织主要是初生碳化物(Cr、Fe)7C3和共晶组织。初生碳化物呈六棱柱状、垂直于基材方向生长,其横截面的显微硬度达1 771 HV。共晶组织分布在初生碳化物周围,其硬度约为800 HV左右。堆焊层洛氏硬度为64.2 HRC。The advanced flux cored Fe-Cr-C alloy wire for self - shielded arc welding has good technological properties. On the surface of hardfacing layer there are a lot of fine cracks forming reticulate structure. The microstructure of the hardfacing consists mainly of primary carbide（Cr. Fe）7C3 and eutectic structure.The primary carbide is of vertical hexagonal prism with a hardness in transverse section up to 1 771 HV. The carbides are encireled with eutectic having a hardness ahout 800 HV.The rockwell hardness of the hardfaing is about 64.2 HRC.

关 键 词：高铬铸铁 自保护电弧焊 药芯焊丝 硬面堆焊 

分 类 号：TG422.3[金属学及工艺—焊接]