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Method for electroforming nickel-cobalt alloy

A technology of cobalt alloy and electroforming nickel, which is applied in the field of non-ferrous metal electroforming nickel-cobalt alloy composite layer, can solve the problems of high stress and easy cracks in the coating, thin coating, non-wear resistance, and short service life, so as to reduce edge effects, Crack reduction and long service life

Inactive Publication Date: 2004-07-28
ELECTROMECHANICAL APPTS PLANT MASCH MFG ANGANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The crystallizer copper plate of the continuous casting machine currently has a common problem that the coating stress is high and cracks are easy to appear, the coating layer and the plate base are poorly bonded, the coating layer is easy to fall off, the coating layer is thin and not wear-resistant, and the service life is short. These disadvantages have not been completely solved so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the copper plate of electroplating pretreatment (degreasing, derusting) is placed in plating bath, electroformed nickel-cobalt alloy coating: the composition and proportioning of electroplating solution are:

[0027] Nickel Sulfate NiSO 4 ·7H 2 O 180g / l,

[0028] Nickel Chloride NiCl 2 ·6H 2 O 10g / l,

[0029] Cobalt Sulfate CoSO 4 ·7H 2 O 15g / l,

[0030] Sodium Chloride NaCl 1g / l

[0031] Boric acid H 3 BO 3 30g / l,

[0032] Sodium Lauryl Sulfate C 12 h 25 SO 4 Na 0.3g / l,

[0033] ADD1 (aqueous solution of saccharin and glucose) 6ml / l,

[0034] ADD2 (aqueous solution of sodium formate and citric acid) 10ml / l;

[0035] The process conditions are: PH value = 2.5, current density = 2.5A / dm 2 ,

[0036] Temperature = 55°C, S 阴 :S 阳 =1:2,

[0037] Stirring method: reciprocating cathode movement, mechanical stirring.

Embodiment 2

[0038] Embodiment 2, the copper plate of pretreatment (degreasing, derusting) through electroplating is placed in plating tank,

[0039] Electroformed nickel-cobalt alloy coating: the composition and ratio of the electroplating solution are:

[0040] Nickel Sulfate NiSO 4 ·7H 2 O 220g / l,

[0041] Nickel Chloride NiCl 2 ·6H 2 O 15g / l,

[0042] Cobalt Sulfate CoSO 4 ·7H 2 O 45g / l,

[0043] Sodium chloride NaCl 1g / l,

[0044] Boric acid H 3 BO 3 30g / l,

[0045] Sodium Lauryl Sulfate C 12 h 25 SO 4 Na 0.4g / l,

[0046] ADD1 (aqueous solution of saccharin and glucose) 8ml / l,

[0047] ADD2 (aqueous solution of sodium formate and citric acid) 15ml / l;

[0048] The process conditions are: PH value = 3, current density = 4A / dm 2 ,

[0049] Temperature = 60°C, S 阴 : S 阳 =1:3,

[0050] Stirring method: reciprocating cathode movement, mechanical stirring.

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PUM

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Abstract

The present invention relates to a method for electroforming nickel-cobalt alloy, belonging to the field of electroforming technology. The optimum composition of its electroplating solution includes nickel sulfate 220g / l, nickel chloride 15 g / l, cobalt sulfate 45g / l, sodium chloride Ig / l, boric acid 30g / l and sodium louryl sulfate 0.4 g / l. The thickness of nickel-cobalt alloy coat of the conticaster crystallizer copper plate electroformed by said invention is 2.0-3.0 mm. The binding force of the coat and base body is strong, the service life of the crystallizer copper plate is long.

Description

technical field [0001] The invention relates to a method for electroforming a nickel-cobalt alloy composite layer of nonferrous metals such as copper plates, and belongs to the field of electroforming. Background technique [0002] As the key component of the continuous casting machine, the mold copper plate has poor working conditions. Under the simultaneous action of high-temperature molten steel and cooling water, it is subjected to high-temperature oxidation, thermal fatigue, chemical corrosion, high-temperature cavitation, and vibration of casting dummy and mold. Unfavorable conditions such as friction, wear, scratches, etc. The mold copper plate of the continuous casting machine currently generally suffers from high stress in the coating, which is prone to cracks, poor bonding between the coating and the plate base, and the coating is easy to fall off, the coating is thin and not wear-resistant, and the service life is short. Contents of the invention [0003] The o...

Claims

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Application Information

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IPC IPC(8): B22D11/057C25D3/56
Inventor 孙凤国原天壮顾君业戚克新
Owner ELECTROMECHANICAL APPTS PLANT MASCH MFG ANGANG GRP
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