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The role of the mold copper tube-the performance of the mold copper tube

The role of the mold copper tube-the performance of the mold copper tube

The role of the mold copper tube-the performance of the mold copper tube

In order to improve the wear resistance of the chromium coating and extend the service life of the mold copper tube, the nickel cobalt alloy coating of 0.4 -- 0

In order to improve the wear resistance of the chromium coating and extend the service life of the mold copper tube, the nickel cobalt alloy coating of 0.4 -- 0.5mm thick was added between the inner surface of the mold copper tube and the chromium plating layer as the transition layer.So it is called nickel-cobalt alloy - hard chromium coating.Referred to as composite copper plating tube.The metal content is: the hardness of the coating is 300-600hV.

Nickel-cobalt alloy coating has good resistance to chemical corrosion, thermal erosion and wear resistance.It not only blocks the diffusion of Zn, S, Cd and F in molten steel to the inner surface of mold copper tube, but also acts as a binder between the inner surface of mold copper tube and chrome plating layer, which greatly improves the wear resistance of chrome plating layer.In addition, nickel-cobalt alloy coating can continue to work after the chromium plating layer is worn, so as to extend the service life of copper tube.

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Comments:

  1. image
    shengmiao

    Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea

  2. image
    shengmiao

    1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten

  3. image
    shengmiao

    In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or

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