Tungsten carbide cutting tools Chemical Wear

Tungsten carbide cutting tools chemical wear is a chemical reaction that occurs during the tungsten carbide cutting tools that makes tungsten carbide cutting tools wear occurs. Specific process is as follows:

In the metal cutting process, strong friction will produced between tungsten carbide cutting tools and the workpiece, cutting heat makes the temperature increased sharply in cutting zone.In order to reduce friction, the use of cutting fluid is needed which will make Co and W in tungsten carbide cutting tools leaching. When the temperature of the cutting area at about 700 ℃, Co and W in tungsten carbide cutting tools will work with oxygen in the air oxidation occurs, generating softer oxide, such as CoO, WO3. The adhesive strength of the tungsten carbide cutting tools chemical wear degree is related to the low adhesion strength of the oxide film. The higher the adhesive strength of the oxide film, the faster tungsten carbide cutting tools chemical wear. The lower the adhesive strength of the oxide film, the slower tungsten carbide cutting tools chemical wear. Co and W in tungsten carbide cutting tools may also be of some substances react to form a precipitate membrane, resulting in cobalt leaching; tungsten can also occur in aqueous solution in order to accelerate dissolution of tungsten carbide cutting tools wear.


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