Effect of ZrN and Mo-N coatings and sulfacyanization on wear of wood-cutting knives

Abstract

The effect of sulfacyanization of ZrN and Mo+Mo2N coatings on the volume wear of hard-alloy blade cutting knives when milling chipboard laminated wood was investigated. It is revealed that this treatment reduces the volume wear of knife blades two times. Nitride coatings promote the hardness and deformation resistance of blades. Sulfacyanization forms surface film containing C, S, and N. This film is deeply deformed through the edges and pores of carbide grains reducing friction and oxidation of blades in cutting.