The hardness range of cemented carbide is affected by many factors, including composition, raw material ratio, production process and process parameters, etc.
- Composition: The hardness of cemented carbide mainly depends on its composition and the type and content of carbides. Common cemented carbide components include tungsten (W), cobalt (Co), chromium (Cr) and carbides. Cemented carbides with different compositions have different hardness ranges. For example, the hardness range of tungsten-cobalt (YG) cemented carbide is generally HRA87~91, and the hardness range of tungsten-titanium-cobalt (YT) cemented carbide is generally HRA85. ~88, the hardness range of tungsten titanium tantalum cobalt type (YW type) cemented carbide is generally HRA87~92.
- Raw material ratio: The raw material ratio also has a certain impact on the hardness of cemented carbide. For example, in tungsten-cobalt cemented carbide, as the tungsten content increases, the hardness of the alloy increases.
- Production process and process parameters: The production process and process parameters of cemented carbide will also affect its hardness. For example, different carbonization temperatures and times, alloy sintering temperatures and times, etc. will affect the alloy’s grain size, component distribution, and internal stress state, thereby affecting the alloy’s hardness.
In general, the hardness range of cemented carbide will be different under different compositions and manufacturing processes, and the specific situation will be affected by a variety of factors. During the production process, the composition, production process and process parameters can be adjusted according to actual needs to obtain cemented carbide with specific hardness.
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