A mold copper tube with single nickel transition layer
A crystallizer copper tube and elemental nickel technology, which is applied in the field of continuous casting, can solve problems such as alloy composition and temperature, high requirements for electroplating process control, inconsistent coatings, etc., meet the requirements for wear resistance and corrosion resistance, enhance anti-shedding performance, The effect of improving the service life
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Embodiment 1
[0018] A crystallizer copper tube with an elemental nickel transition layer, the crystallizer is a mold for continuous casting of steel, and the surface of the copper tube is sequentially coated with a copper-nickel alloy layer, an elemental nickel layer, a nickel-chromium alloy layer and a chromium layer Structure, the above structure is formed by the following method: first electroplate a nickel layer on the inner wall of the copper tube, and then electroplate a chromium layer on the nickel layer. When plating the transition layer of simple nickel, the thickness of the coating is controlled to be 3 μm, and the thickness of the coating is controlled to be 40 μm during chrome plating. , wherein, the composition of the plating solution used when plating elemental nickel is: nickel sulfamate 500g / L, nickel sulfate 35g / L, sodium lauryl sulfate 55g / L; the composition of the plating solution used for the chromium plating layer is: chromic anhydride 140g / l, sulfuric acid 1.2g / l, chro...
Embodiment 2
[0020] A crystallizer copper tube with an elemental nickel transition layer, the crystallizer is a mold for continuous casting of steel, and the surface of the copper tube is sequentially coated with a copper-nickel alloy layer, an elemental nickel layer, a nickel-chromium alloy layer and a chromium layer Structure, the above structure is formed by the following method: first electroplate a nickel layer on the inner wall of the copper tube, and then electroplate a chromium layer on the nickel layer. When plating the transition layer simple nickel, the thickness of the coating is controlled to be 4 μm, and the thickness of the coating is controlled to be 30 μm during chrome plating. , wherein, the composition of the plating solution used when plating elemental nickel is: nickel sulfamate 600g / L, nickel sulfate 25g / L, sodium lauryl sulfate 65g / L; the composition of the plating solution used for the chrome plating layer is: chromic anhydride 150g / l, sulfuric acid 1.0g / l, chromium ...
Embodiment 3
[0022] A crystallizer copper tube with an elemental nickel transition layer, the crystallizer is a mold for continuous casting of steel, and the surface of the copper tube is sequentially coated with a copper-nickel alloy layer, an elemental nickel layer, a nickel-chromium alloy layer and a chromium layer Structure, the above structure is formed by the following method: first electroplate a nickel layer on the inner wall of the copper tube, and then electroplate a chromium layer on the nickel layer. When plating the transition layer simple nickel, the thickness of the coating is controlled to be 3.5 μm, and the thickness of the coating is controlled to be 35μm, among which, the composition of the plating solution used for nickel plating is: nickel sulfamate 550g / L, nickel sulfate 30g / L, sodium lauryl sulfate 60g / L; the composition of the plating solution used for the chrome plating layer is: chromium Anhydride 145g / l, sulfuric acid 1.1g / l, chromium sulfate 6g / l, formic acid 4g / ...
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