CHROMIUM-FREE IRON-BASED HARDFACING ALLOY WITH EXCELLENT ABRASION RESISTANCE

摘要

The present invention relates to a chromium-free iron-based hardfacing alloy which does not contain Cr, suitably controls the component system of C, Mn, B, Si and the like, and uses Fe boro-carbide. The chromium-free iron-based hardfacing alloy is excellent in economical efficiency because expensive Cr, W, Nb and the like are not used, and specifically the generation of harmful Cr gas in case of welding can be prevented because the alloy does not contain Cr. Fe boro-carbide is formed by suitably controlling the contents of C and B, thereby increasing the hardness of the alloy itself, the cracking of precipitates of a high hardness which can be generated by external impact may be prevented by varying the shape of primary phase through containing Mn, and the welding property of the alloy is increased by containing Si.