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A nickel-cobalt alloy plating solution and its device for crystallizer copper plate

A crystallizer copper plate, nickel-cobalt alloy technology, applied in electrolytic components, electrolytic process, etc., can solve the problems of low hardness of the electroplating layer and high cost of chemicals, and achieve the effects of good uniformity of the plating layer, low cost of chemicals, and high hardness of the plating layer

Active Publication Date: 2020-06-26
ANHUI MA STEEL SURFACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing electroplating layer has low hardness and high medicament cost, and a nickel-cobalt alloy plating solution and its device for crystallizer copper plate are provided

Method used

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  • A nickel-cobalt alloy plating solution and its device for crystallizer copper plate
  • A nickel-cobalt alloy plating solution and its device for crystallizer copper plate
  • A nickel-cobalt alloy plating solution and its device for crystallizer copper plate

Examples

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Effect test

Embodiment 1

[0025] In July and August 2017, nickel-cobalt alloy electroplating process was used for surface treatment of the crystallizer copper plate.

[0026] Preparation of plating solution: Clean the electroplating tank with a volume of 4500L and prepare a 3900L plating solution, add 1 / 2 volume of distilled water to the tank and heat it to about 51.5°C. Slowly pour 2028.0Kg of nickel sulfamate and 50.7Kg of nickel chloride into the electroplating tank in turn, heat distilled water to above 90°C in another container, slowly add 117.0Kg of boric acid until the boric acid is completely dissolved and pour into the electroplating tank middle. Add sulfamic acid to adjust the pH value of the bath to 3.4. Sodium lauryl sulfate was added to make the surface tension of the plating solution 50mN / m. The nickel sulfamate concentration is maintained at 520g / L, and the nickel-cobalt ion ratio is 4.5%, and the concentration of cobalt sulfamate calculated by formula (1) is 24.5g / L, and 95.55Kg of co...

Embodiment 2

[0032] In September and October 2017, the nickel-cobalt alloy electroplating process was used for surface treatment of the crystallizer copper plate.

[0033] Preparation of plating solution: Clean the electroplating tank with a volume of 4500L and prepare a 3900L plating solution, add 1 / 2 volume of distilled water to the tank and heat it to about 51.5°C. Slowly pour 2223.0Kg nickel sulfamate and 50.7Kg nickel chloride into the electroplating tank successively. In another container, heat the distilled water to above 90°C, slowly add 117.0Kg boric acid under stirring, and pour it into the electroplating tank after the boric acid is completely dissolved. Add sulfamic acid to adjust the pH value of the bath to 3.4. Sodium lauryl sulfate was added to make the surface tension of the plating solution 55mN / m. The nickel sulfamate concentration is maintained at 570g / L, and the nickel-cobalt ion ratio is 5.4%, and the concentration of cobalt sulfamate is 32.5g / L in the calculation pl...

Embodiment 3

[0037] In November and December 2017, the nickel-cobalt alloy electroplating process was used for surface treatment of the crystallizer copper plate.

[0038]Preparation of plating solution: Clean the electroplating tank with a volume of 4500L and prepare a 3900L plating solution, add 1 / 2 volume of distilled water to the tank and heat it to about 51.5°C. Slowly pour 2496.0Kg of nickel sulfamate and 50.7Kg of nickel chloride into the electroplating tank successively, heat the distilled water to above 90°C in another container, slowly add 117.0Kg of boric acid until the boric acid is completely dissolved and then pour into the electroplating tank middle. Add sulfamic acid to adjust the pH value of the bath to 3.4. Sodium lauryl sulfate was added to make the surface tension of the plating solution 60mN / m. The nickel sulfamate concentration is maintained at 640g / L, and the nickel-cobalt ion ratio is 6.7%, and the concentration of cobalt sulfamate in the calculation bath is 46.0g...

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Abstract

The invention discloses a nickel-cobalt alloy plating solution for a crystallizer copper plate and a device thereof. The plating solution comprises sulfamic acid and cobalt sulfamate, the concentration of nickel sulfamate in plating solution is maintained, the nickel-cobalt ion ratio is adjusted, namely the concentration of the cobalt sulfamate in the plating solution is the same as that of the nickel sulfamate, the ratio of the concentration of the cobalt sulfamate to the concentration of the cobalt sulfamate is 4.5%-7.7%, and the hardness of a coating is controlled to be 330-440 HV. According to the device for electroplating the nickel-cobalt alloy plating solution used for the crystallizer copper plate, a first acid-proof filter bag, a second acid-proof filter bag and a third acid-prooffilter bag are arranged in a titanium column of an anode hollow cuboid of an electroplating tank, the volume of the first acid-proof filter bag is minimum, the volume of the third acid-proof filter bag is the largest, the first acid-proof filter bag is filled with nickel-cobalt metal blocks, and the other two acid-proof filter bags are also filled with nickel-cobalt metal blocks with equal mass.Compared with an existing nickel-cobalt alloy plating solution, the nickel-cobalt alloy plating solution has the advantages of being high in hardness, flexible in index, high in adaptability, low in coating agent cost, small in environment-friendly pressure and the like.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a nickel-cobalt alloy plating solution for copper plates of crystallizers and a device thereof. Background technique [0002] Mold copper plate is the key equipment in the continuous casting process of steel. During the working process, under the joint action of high-temperature molten steel and low-temperature cooling water, it withstands high-temperature oxidation, chemical corrosion, surface wear and thermal fatigue, etc., which accelerate the crystallizer. fail. Therefore, it is urgent to study the surface coating of mold copper plate with high temperature resistance and wear resistance, so as to prolong its service life, improve billet quality and continuous casting production efficiency. Among the many crystallizer surface treatment technologies at present, there are various types of copper plate coatings, and the common ones are chromium, nickel, nickel-iron, cobal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D17/00C25D7/00B22D11/059
CPCB22D11/059C25D3/562C25D7/00C25D17/00
Inventor 杭志明王硕煜张龙丁贵军杨钧甘为民熊道毅刘香年张鹏飞沈斌胡业飞
Owner ANHUI MA STEEL SURFACE TECH CO LTD