Analysis of influence of different granularity WC ratio on properties of WC-CO cemented carbide composites
In order to optimize the comprehensive properties of materials by adjusting the particle size ratio,this study explores the specific impact of WC particle size differences on the properties of WC Co hard alloy composites.Select large,medium and small sizes of tungsten carbide(WC)as raw materials,adjust the amount of WC with dif-ferent sizes to prepare different ratios of WC-CO cemented carbide composite materials,numbered as ratio Ⅰ,ratioⅡ,ratio Ⅲ,test the coercive magnetic force,density and other basic properties of each composite material under different sintering temperatures.The microstructure of the composite sintered at 1 500 ℃was observed,and the wear resistance and mechanical properties of the composite were measured.The test results show that the propor-tioned Ⅱ composites with small and medium particle size are sintered at high temperature,maintain high density and coercive magnetic force,and the internal void of the proportioned composites is smaller,and the wear resistance and mechanical properties are higher.Due to the large size of WC,the mechanical properties and wear resistance of the composite were insufficient.
different granularitytungsten carbide(WC)particle size ratioWC-Cocemented carbidecomposite material
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