摘要
根据耐磨性和工艺性的要求 ,结合我国资源情况 ,运用正交试验法 ,研究设计了EDZCr型耐磨焊条的药皮成分 ,分析了药皮重量系数分别为53%和104 %的两种焊条在焊接电流分别为100A、180A、200A、240A时的堆焊层的硬度、金相组织和性能。结果表明 :用该焊条堆焊 ,不需专用设备 ,容易掌握 ,堆焊层硬度高 ,耐磨性好 ;药皮重量系数和焊接工艺对堆焊层性能有较大影响 ,生产中须根据具体情况确定。
Compositions of surfacing metal of EDZCr wear resistance electrode are studied by means of orthogonal test,with the wear resistance,manufacturability and natural resources being taken into account.The hardness,metallographical structures and properties of the surfacing metal,welded under the welding current at100A?180A?200A?240A,with two kinds of surfacing metal weight coefficient of53%and104%,are analyzed.The results showthat,the surfacing metal weight coefficient and the welding process parameter have effecton the properties ofthe surfacing metal,and they should be determined accordingto the factual condiˉtions.
