Experimental Investigation On Hard Phase Distribution To Composite-alloy Grinding Roller Wear Resistance

Aiming at composite alloy layer of the MPS mill grinding roller, wear tests are done. The composite alloy layer is made up of hard phase tungsten carbide particle and toughness phase Copper Manganese Nickel alloy. Different particle size matches of tungsten carbide are choosed to do the samples. Through abrasive wear tests, the conclusions are arrived which are internal relations of different particle size matches of tungsten carbide and wear resistance of the samples and wear mechanisms. When apparent density of the composite alloys increases, wear weightlessness of the samples reduces, wear resistance of those buildups. Wear mechanisms are cutting wear and brittle phase rupture. Cutting wear is main wear mechanism. Wear resistance of the samples lies on not only high rigidity tungsten carbide but also metallurgy connection between tungsten carbide and matrix and support of matrix to tungsten carbide.