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Double-plating steel belt and plating process

A technology of electroplating process and coated steel, which is applied in the field of electroplating of punched steel strip and perforated steel strip, which can solve the problems of low corrosion resistance and high cost, and achieve the effect of simple operation and simple process maintenance

Inactive Publication Date: 2012-05-30
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The pure nickel layer on the steel strip has the problems of high cost and low corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0032] One embodiment of the present invention comprises the following steps:

[0033] (1) Degreasing: All kinds of acidic or alkaline degreasing solutions can be used, the purpose is to remove the oil on the surface of the steel strip.

[0034] (2) Wash with water;

[0035] (3) Cathodic and anode combined electrolysis to remove oil;

[0036] (4) Wash with water;

[0037] (5) Acid etching; the purpose is to remove the rust and scale on the surface of the plated parts;

[0038] (6) Wash with water;

[0039] (7) Electroplating nickel-iron alloy: the formula of electroplating solution is NiSO 4 ·7H 2 O 220~250g / L; H 3 BO 3 30~40g / L; NaCl0~15g / L, FeSO 4 ·7H 2 O 25 ~ 35g / L, sodium lauryl sulfate 0.1 ~ 0.3g / L, a small amount of stabilizer (the stabilizer used here generally uses ascorbic acid 1 ~ 2g / L, commercially available commercial stabilizers can also be used, such as Guangzhou BH stabilizer produced by Erqing) temperature 50~70℃, current density 2~10A / dm 2 , The tap...

Embodiment 1

[0050] Embodiment 1: a perforated steel strip with a thickness of 0.1 mm and a width of 23 mm

[0051] (1) Degreasing: All kinds of acidic or alkaline degreasing solutions can be used, the purpose is to remove the oil on the surface of the steel strip.

[0052] (2) Wash with water;

[0053] (3) Cathodic and anode combined electrolysis to remove oil;

[0054] (4) Wash with water;

[0055] (5) Acid etching;

[0056] (6) Wash with water;

[0057] (7) Electroplating nickel-iron alloy: the formula of electroplating solution is NiSO 4 ·7H 2 O 220g / L; H 3 BO 330g / L; NaCl 12g / L, FeSO 4 ·7H 2 O 28g / L, sodium lauryl sulfate 0.1g / L, BH stabilizer 18ml / L, temperature 55°C, current density 5A / dm 2 , plating time 3min.

[0058] Nickel-iron alloy thickness 2.3μm.

[0059] (8) Wash with water

[0060] (9) Electroplating nickel: general electroplating nickel formula and process electroplating nickel 0.5 ~ 2μm

[0061] (10) Wash with water

[0062] (11) Neutralization: pass the s...

Embodiment 2

[0067] Embodiment 2: electroplating thickness is 0.1mm, the punching steel strip that width is 180mm

[0068] (1) Degreasing: All kinds of acidic or alkaline degreasing solutions can be used, the purpose is to remove the oil on the surface of the steel strip.

[0069] (2) Wash with water;

[0070] (3) Cathodic and anode combined electrolysis to remove oil;

[0071] (4) Wash with water;

[0072] (5) Acid etching;

[0073] (6) Wash with water;

[0074] (7) Electroplating nickel-iron alloy: the formula of electroplating solution is NiSO 4 ·7H 2 O240g / L; H 3 BO 3 32g / L; NaCl 14g / L, FeSO 4 7H 2 O31g / L, sodium lauryl sulfate 0.2g / L, ascorbic acid 1.5g / L) temperature 65°C, current density 8A / dm 2 , plating time 2min.

[0075] The nickel-iron alloy thickness is 3.1 μm.

[0076] (8) Wash with water

[0077] (9) Electroplating nickel: general electroplating nickel formula and process electroplating nickel 0.5 ~ 2μm

[0078] (10) Wash with water

[0079] (11) Neutralizatio...

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Abstract

The invention relates to a double-plating steel belt and a plating process, which is especially suitable for plating perforated steel belts and punched steel belts for manufacturing electrodes. The invention aims to solve the technical problems of high cost and low corrosion resistance of a steel belt on which a pure nickel layer is plated. The double-plating steel belt of the invention is characterized in that a nickel iron alloy plating of 2-4mu m is plated on a substrate steel belt, and a nickel layer of 0.5-2mu m is plated on the nickel iron alloy plating. In the invention, the nickel iron alloy plating part is used for replacing the pure nickel layer, thus the cost is lower; and simultaneously, in the plating method of the invention, a mode of dropping ferrous sulfate into a plating solution is used for replenishing the Fe2<+> ions consumed in the plating process, and the area ratio of an iron plate to a nickel plate of an anode does not need to be controlled, thus the process maintenance is simple.

Description

technical field [0001] The invention relates to a double-coated steel strip plated with a nickel-iron alloy layer / nickel coating and an electroplating process, and is particularly suitable for electroplating perforated steel strips and punched steel strips for electrode manufacture. Background technique [0002] The power supply manufacturing industry widely uses perforated steel strips and punched steel strips with a thickness of less than 0.2mm as electrode connectors or skeletons. The steel strips are usually electroplated with a nickel layer with a thickness of 3-5μm to prevent the steel strip substrate from being damaged during the electrode manufacturing process. And the steel strip is corroded during battery use. [0003] The pure nickel layer on the steel strip has the problems of high cost and low corrosion resistance. Contents of the invention [0004] The technical problem to be solved by the invention is to reduce the cost of nickel plating on perforated steel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/12C25D7/06C25D3/56
Inventor 张建旭
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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