亚洲老汉色AV影院

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  3. 2019-12-11 13:21:50

    Production and preservation of tungsten carbide powder

    Tungsten carbide powder is the intermediate from W powder to carbide. It can be produced by different raw materials and different processes. Up to now, the most commonly used method is carburizing tungsten powder, which can produce powder quality with an average particle size of 0.15-12 μ M.

     

    Production and preservation of tungsten carbide powder

     

    Conventional carburizing methods include mixing the corresponding tungsten powder of the required particle size with high-purity carbon (such as graphite) and reacting in a hydrogen environment at a temperature of 1300 to 1600 ℃. The size and distribution of WC powder are determined by the average size and distribution of WC powder.

     

    The final carbon content of WC powder depends on the production mode of cemented carbide manufacturer, which is an important specification in product performance. In addition to the carbon content, there are a series of physical properties, including: average particle size, particle size distribution, apparent (volume) density and uniformity. These are very important for WC powder.

     

    High temperature cemented tungsten carbide powder (1700-2200 ° C) is usually 10-50 μ m thick, but sometimes it is treated at 5-10 μ m grade.

     

    Tungsten carbide powder needs to be stored in steel drums lined with sealed polyethylene.


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    亚洲老汉色AV影院
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