Fine Grain Tungsten Carbide Cutting Tools Performance

After the tungsten carbide grain refinement, the hard phase size becomes smaller, the binder phase is more evenly distributed around the hard phase, can increase the hardness and wear resistance of cemented tungsten carbide. Such as the appropriate use of cobalt content, but also to improve the flexural strength and fracture toughness. Mining or drilling for coarse tungsten carbide grains, the average grain size of 4 ~ 5μm; fine grain tungsten carbide cutting tools grades generally used as TY15, YG6 so are grains, the average grain size of 2 ~ 3μm; average grain size of the fine grain tungsten carbide cutting tools for 1 ~ 2μm; submicron grain tungsten carbide for 0.5 ~ 1μm; ultrafine grain tungsten carbide at 0.5μm or less.

Ultra-fine grain tungsten carbide cutting tools grains due to its fine, the blade can be sharpened, smooth; at the same time because of its high strength and hardness, and it could have a long time to maintain a very small edge radius and roughness . Therefore, in the processing of heat-resistant alloy, use YS2, YM051, YM052, YD05 and other ultra-fine grain tungsten carbide cutting tools, than using YT, YG, YW3 class ordinary tungsten carbide cutting tools for better heat resistance and integrated wear resistance.


 

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