WC Particulate Reinforced Metal Matrix Composite Wear-resistant Roller

The present invention describes a tungsten carbide particulate reinforced metal matrix composite wear-resistant roller. Characterized in that:

The wear-resistant roller by the mother, the composite layer and outer rims of three parts, sintered composite layer made ​​of nickel-based alloys and cast WC particles are made ​​of nickel-based alloy powder composition which, the quality of the percentage of C: 0.7 ~ 0. 8, Si: 3.5 ~ 4.5%, B: 2.8 ~ 3.6%, Cr: 11 ~ 14%, Fe: 35 ~ 40%, the remainder being Ni, Ni-based alloy powder particle size of 105 ~ between 140 microns and the percentage by volume of tungsten carbide grain size 1 ~ 1.5mm:30 ~ 40%, 0.5 ~ 1mm:25 ~ 35%, 0.3 ~ 0.5mm:25 ~ 35%; the nickel-based alloys and cast WC particles in a volume ratio of 2 to 3:1.

The present invention has an impact and loads in wear resistance, hardness and toughness can make it higher than the high chromium cast iron and alloy wire welding tungsten carbide particulate reinforced metal matrix composite wear-resistant roller, this roller medium speed mill is mainly used for electric power, cement and other industries on.


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