Tungsten Carbide Cutting Tools Coating Substrate Graded

The bonding strength of tungsten carbide cutting tools coating and tungsten carbide substrate is the key factor in tungsten carbide cutting tools life. Tungsten carbide cutting tools coating must be combined with suitable tungsten carbide substrate to achieve the desired performance.Due to the different thermal stress and thermal expansion between materials, the coating material is generally brittle crack more easily to the surface of the coating matrix expansion during cooling.

In order to prevent it and contribute to achieving high performance of tungsten carbide cutting tools, tungsten carbide substrate can be a gradient process. Because of its good toughness can absorb energy and thus crack can effectively prevent cracks extend to the inside of the alloy, improve the life of tungsten carbide cutting tools.


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