Unbonded Phase WC Tungsten Carbide Ball Preparation

containing little or no metal binder phase. Usually Unbonded phase WC tungsten carbide ball refers metal binder phase mass fraction of less than 1%. Unbonded phase WC tungsten carbide ball with a WC-Co alloy ball unparalleled excellent wear resistance and corrosion resistance, excellent polishing and oxidation resistance, hardness and tungsten carbide ceramics collection toughness in combined with one body.

Unbonded phase WC tungsten carbide ball has great potential applications scalability. However, the melting point of pure WC up to 2860 ℃, unbonded phase WC tungsten carbide ball requires high sintering temperature (1500 ℃ ~ 2000 ℃), using conventional sintering methods are difficult to obtain fully dense block. With the development of advanced sintering technology, the current phase tungsten carbide ball unbonded preparation methods include vacuum sintering - hot isostatic pressing, pressure sintering, hot pressing, spark plasma sintering and PPC (Plasma Pressure Compaction), etc., which after 2 methods because of their special sintering mechanism can reduce the sintering temperature and heating rate is very fast and can be completed in minutes sintering, thus reducing the chance of grain growth during the sintering process, you can get a full dense ultrafine grained grain bulk material.




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