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Method for preparing nickel-boron alloy coating on continuous casting crystallizer copper plate surface

A technology for continuous casting mold and nickel-boron alloy, which is applied in the field of preparing nickel-boron alloy coating on the surface of continuous casting mold copper plate, can solve the problem that nickel-boron alloy is not fully suitable for mold copper plate coating, etc., so as to improve the surface quality of the coating and ensure The effect of normal operation and extended service life

Active Publication Date: 2016-10-12
XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, practice shows that the research on nickel-boron alloy prepared by electroplating method in this paper is not completely applicable to the preparation of copper plate coating in crystallizer.
And there are no more detailed studies and reports on the preparation of nickel-boron alloy coatings on crystallizer copper plates by electroplating.

Method used

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  • Method for preparing nickel-boron alloy coating on continuous casting crystallizer copper plate surface

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The method for preparing the nickel-boron alloy coating on the surface of the copper plate of the continuous casting crystallizer in this embodiment, the specific steps are as follows:

[0037] Step S1, pretreatment: cleaning the machined copper plate with an organic solvent, sandblasting, electrolytic degreasing, ultrasonic cleaning and acid activation treatment to obtain the base material of the copper plated plate;

[0038] Step S2, electroplating: inject the electroplating solution into the electroplating tank, adjust the pH of the electroplating solution to 4.0, heat the electroplating solution, and raise the temperature to 55° C., then put the base material of the plate to be copper-plated as the cathode into the electroplating tank, and put Put the anode into the electroplating tank, turn on the power and start electroplating, until the thickness of the nickel-boron alloy coating reaches the set value, the electroplating ends;

[0039] Step S3, post-processing: t...

Embodiment 2

[0045] In the method for preparing a nickel-boron alloy coating on the surface of a continuous casting crystallizer copper plate in this embodiment, the composition of the electroplating solution and the electroplating conditions are the same as in Example 1, steps S1 to S2 are the same as in Example 1, and step S3 also includes:

[0046] Place the electroplated copper plate in a vacuum furnace with a vacuum degree of 6.67×10 -3 Pa, heat treatment at 400°C for 4h.

[0047] The mass fraction of boron in the nickel-boron alloy obtained by the method of this embodiment is 4.2%.

Embodiment 3

[0049] In the method for preparing the nickel-boron alloy coating on the surface of the continuous casting crystallizer copper plate of the present embodiment, the composition of the electroplating solution is:

[0050] Nickel sulfamate 60g / L, boric acid 40g / L, sodium borohydride 5g / L, ethylenediamine 42g / L, sodium dodecylsulfonate 0.06g / L, benzyl-alkenylpyridine inner salt 0.010g / L L, propynyl alcohol 0.025g / L, sodium allyl sulfonate 1.5mg / L;

[0051] The pH value of the electroplating solution is 4.0, the temperature is 55°C, the copper substrate is the cathode, the nickel beads are the anode, and the current density is controlled at 2.0A / dm 2 .

[0052] The specific preparation method is the same as in Example 2, and will not be repeated. The mass fraction of boron in the nickel-boron alloy obtained by the method of this embodiment is 4.5%.

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Abstract

The invention belongs to the technical field of surface treatment electroplating, and particularly relates to a method for preparing a nickel-boron alloy coating on a continuous casting crystallizer copper plate surface. The method comprises the following step: carrying out nickel-boron alloy electroplating on a pretreated copper plate substrate, wherein the electroplating solution is composed of 30-80 g / L nickel sulfamate, 30-50 g / L boric acid, 0.8-16 g / L sodium borohydride, 30-60 g / L ethylenediamine and 0.01-0.1 g / L sodium dodecylsulfate; and the electroplating conditions are as follows: the pH value of the electroplating solution is 3.5-4.5, the temperature is 45-65 DEG C, the copper plate substrate is the cathode, nickel pellets are the anode, and the current density is controlled at 1-3 A / dm<2>. The method can be used for obtaining the coating which has the advantages of high compactness and uniformly, excellent binding force, low thermal crack tendency, high hardness, excellent corrosion resistance and excellent wear resistance.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to a method for preparing a nickel-boron alloy coating on the surface of a copper plate of a continuous casting crystallizer. Background technique [0002] The continuous casting machine is the key equipment for steelmaking, and the mold is the core component of the continuous casting machine. Its quality directly affects the quality of the billet and the operating rate of the continuous casting machine. Boiling molten steel and molten mold slag directly contact the surface of the copper plate of the mold to cool it into a slab, accompanied by sliding friction between the inner wall and the slab. The harsh working environment requires better thermal conductivity on the surface of the copper plate of the mold. High mechanical strength, good wear resistance and corrosion resistance. In the process of steelmaking production, molten steel continuously passes through ...

Claims

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Application Information

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IPC IPC(8): C25D3/56B22D11/059
CPCB22D11/059C25D3/562
Inventor 朱书成徐文柱黄国团王显
Owner XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
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