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Roll strip type electroplating method for crystallizer roll surface

A crystallizer and roller-belt technology, which is applied in the field of electroplating on the roller surface of the roller-belt crystallizer, can solve the problems of unsatisfactory corrosion resistance, low hardness of the coating, weakened wear resistance, etc., and achieve good thermal fatigue resistance , Improve the performance of the coating and the effect of improving the wear resistance

Inactive Publication Date: 2016-05-11
张颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although compared with the brush plating method, the hardness of the coating obtained by the electroplating method is relatively low, and the wear resistance may be weakened. Performance requirements are more focused
[0006] The Chinese patent application whose publication number is CN101126169A discloses a method for electroplating the surface of a thin strip continuous casting crystal roll and its electroplating solution. The anti-corrosion performance is not ideal, and it is not suitable for some steel types with high self-corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for electroplating the roll surface of a roll-belt crystallizer, comprising the following process steps:

[0018] 1) Pretreatment: cleaning the surface of the continuous casting crystal roll with organic solvent, alkali degreasing, electrolytic degreasing, acid etching and activation treatment;

[0019] 2) Electroplating metal nickel: The composition of the electroplating solution is: nickel sulfamate 180g / l, nickel sulfate 50g / l, nickel chloride 20g / l, tin chloride 30g / L, boric acid 45g / l, dodecyl sulfonate sodium citrate 0.1g / l, sodium citrate 10g / l, o-benzoylsulfonimide 0.5g / l, propionic acid 0.2g / L; the electroplating process conditions are: bath temperature 46°C, pH 2.8, initial Current density 1.6A / dm 2 , current density 2.0A / dm during normal plating 2 , the roller speed is 20 rpm, and the air is used to stir until the thickness of the electroplated nickel layer is 0.8mm.

Embodiment 2

[0021] A method for electroplating the roll surface of a roll-belt crystallizer, comprising the following process steps:

[0022] 1) Pretreatment: cleaning the surface of the continuous casting crystal roll with organic solvent, alkali degreasing, electrolytic degreasing, acid etching and activation treatment;

[0023] 2) Electroplating metal nickel: The composition of the electroplating solution is: nickel sulfamate 220g / l, nickel sulfate 30g / l, nickel chloride 30g / l, tin chloride 20g / L, boric acid 55g / l, dodecyl sulfonate sodium citrate 0.05g / l, sodium citrate 14g / l, o-benzoylsulfonimide 0.1g / l, propionic acid 0.6g / L; the electroplating process conditions are: bath temperature 40°C, pH 4.5, initial Current density 0.8A / dm 2 , current density 4.0A / dm during normal plating 2 , the roller speed is 12 revolutions / min, and air stirring is used until the thickness of the electroplated metal nickel layer is 1.6mm.

Embodiment 3

[0025] A method for electroplating the roll surface of a roll-belt crystallizer, comprising the following process steps:

[0026] 1) Pretreatment: cleaning the surface of the continuous casting crystal roll with organic solvent, alkali degreasing, electrolytic degreasing, acid etching and activation treatment;

[0027] 2) Electroplating metal nickel: The composition of the electroplating solution is: nickel sulfamate 200g / l, nickel sulfate 40g / l, nickel chloride 25g / l, tin chloride 25g / L, boric acid 50g / l, dodecyl sulfonate Sodium citrate 0.08g / l, sodium citrate 12g / l, o-benzoylsulfonimide 0.3g / l, propionic acid 0.4g / L; the electroplating process conditions are: bath temperature 43°C, pH 3.6, initial Current density 1.2A / dm 2 , current density 3.0A / dm during normal plating 2 , the roller speed is 16 revolutions / min, and air stirring is used until the thickness of the electroplated metal nickel layer is 1.2mm.

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Abstract

The invention discloses a roll strip type electroplating method for a crystallizer roll surface. The roll strip type electroplating method comprises the following process steps: 1) pre-treating: carrying out organic solvent cleaning, alkali degreasing, electrolytic degreasing, acid etching and activating treatment on a continuously-cast crystallizer roll surface; and 2) electroplating metal nickel, wherein an electroplating liquid consists of 180-220g / l of nickel aminosulfonate, 30-50g / l of nickel sulfate, 20-30g / l of nickel chloride, 20-30g / L of tin chloride, 45-55g / l of boric acid, 0.05-0.1g / l of sodium dodecyl sulfate, 10-14g / l of sodium citrate, 0.1-0.5g / l of o-benzoic sulfimide and 0.2-0.6g / l of propionic acid; the electroplating process conditions are as follows: the temperature of the electroplating liquid being 40-46 DEG C, the pH value of the electroplating liquid being 2.8-4.5, the initial current density being 0.8-1.6A / dm<2>, the current density during normal electroplating being 2.0-4.0 A / dm<2>, and the rotation speed of a roll being 12-20 revolutions / minute; and air stirring is adopted until the thickness of an electroplated metal nickel layer is 0.8-1.6mm.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to an electroplating method for the roller surface of a roller belt crystallizer. Background technique [0002] Thin strip continuous casting technology is a cutting-edge technology in the field of metallurgy and material research, which has changed the production process of thin steel in the traditional metallurgical industry. The thin strip continuous casting technology is adopted, which integrates continuous casting, rolling, and even heat treatment, so that the thin strip produced can be formed into industrial products at one time after a little cold rolling, which simplifies the production process and shortens the production cycle. Line length is only 60m. Its appearance is bringing a revolution to the steel industry. [0003] According to the different crystallizers, the thin strip continuous casting technology can be divided into belt type, roll type, roll belt type,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D7/00
CPCC25D3/56C25D7/00
Inventor 张颖
Owner 张颖