Relations WC Grain Size and Tungsten Carbide Cutting Tools and Wear Properties

WC grain size has important significance for the friction and wear properties of tungsten carbide cutting tools. Most people think that fine grain carbide tools are better than coarse grain tungsten carbide wear resistance. After the tungsten carbide grain refinement, reduction in size of the hard phase, increasing the binding force of the hard phase grains and grain surface area between the binder phase is more evenly distributed around it can be improved tungsten carbide the tool's hardness and wear resistance. When tungsten carbide grain size of less than 1m, there will be double high features, namely hardness and strength will get a larger increase, but this feature along with refined grains become more prominent. And titanium in high-speed friction and wear tests, the ultra-fine grain carbide WC-10Co (grain size 03-05m) the wear rate of less than submicron grain WC-10Co (grain size 06-08m) .