Ti-V-Mo系高硬度耐磨堆焊焊条  

Development of the TiC-VC-MoC Wear Resistance Surfacing Electrode

作　　者：韩芳[1] 王新洪[1] 邹增大[1] 

机构地区：[1]山东大学材料学院

出　　处：《现代制造技术与装备》2007年第1期46-48,78,共4页Modern Manufacturing Technology and Equipment

摘　　要：焊条药皮中采用石墨、钛铁、钒铁、钼铁等组分,通过电弧冶金反应生成具有高硬度的TiC、VC、MoC等碳化物颗粒,研制出具有硬度高、耐磨性好的耐磨堆焊焊条。探讨了焊条药皮中石墨、钛铁、钒铁、钼铁等组分含量对焊条工艺性及堆焊层硬度的影响。利用X射线衍射、光学显微镜(OM)和电子探针(EMPA)对堆焊层显微组织和碳化物形成进行了分析。研究结果表明,碳化物颗粒为TiC-VC-MoC复合碳化物颗粒,并且碳化物颗粒弥散分布在基体上。焊前不预热,焊后不缓冷连续堆焊不产生裂纹。堆焊层硬度达到HRC59以上,具有高的耐磨性,相对耐磨性优于D317焊条。H08A rare electrode was coated by different amount of ferrotitanium （FeTi）, ferrovanadium （FeV）, ferromolybdenum （FeMo） and graphite, the carbide of TiC-VC-MoC, with high micro-hardness, was formed by arc metallurgic reaction. The effect of content of graphite, FeTi, FeV and FeMo in the coat on hardness of hardfacing metal was also discussed. The microstructure and wear properties were analyzed by means of X-ray diffraction, SEM, EMPA and wear tester. The results showed that carbides dispersively distributed in the matrix metal. The hardfacing metal had highly plasticity and ductility. Its hardness was more than HRC59, however, the crack of hardfacing metal did not occur even on the condition of non-preheating and non-postheating. The hardfacing metal had high wear resistance, and its relative wearability was better than that of D317.

关 键 词：TiC-VC-MoC颗粒 堆焊焊条 耐磨性 焊条工艺 

分 类 号：TG422.3[金属学及工艺—焊接]