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Stainless steel copper plating method

A stainless steel and copper plating technology, applied in the field of stainless steel copper plating, can solve the problems of high production cost and serious environmental pollution, and achieve the effects of low production cost, good bonding force and little pollution

Active Publication Date: 2016-07-13
WUXI BAOSHUN STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many disadvantages in this technological process, the production cost is high, and the environmental pollution is serious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment one: a kind of method for stainless steel copper plating, comprises following process steps:

[0012] (1) Degreasing: Use metal degreaser to remove oil stains on the surface of stainless steel products, and then clean them with hot water at 70°C;

[0013] (2) Pre-plating copper: immerse the cleaned stainless steel product in the pre-plating copper solution for electroplating, and the current density is 0.1A / dm 2 , the temperature is 20°C, and the electroplating time is controlled to obtain a copper coating with a thickness of 0.5 microns on the surface of the stainless steel product; the composition of the pre-plating copper solution is: 100g / LCuSO 4 ·5H 2 O, 10g / LH 2 SO 4 , 0.01g / LNaCl;

[0014] (3) Copper replating: immerse the stainless steel product obtained in step (2) into the copper replating solution for electroplating, with a current density of 2A / dm 2 , the temperature is 20 ℃, and the copper plating layer of the desired thickness is obtained b...

Embodiment 2

[0015] Embodiment two: a kind of method for stainless steel copper plating, comprises following processing step:

[0016] (1) Degreasing: use metal degreaser to remove oil stains on the surface of stainless steel products, and then clean them with 90°C hot water;

[0017] (2) Pre-plating copper: immerse the cleaned stainless steel product in the pre-copper plating solution for electroplating, and the current density is 03A / dm 2 , the temperature is 50°C, and the electroplating time is controlled to obtain a copper coating with a thickness of 5 microns on the surface of the stainless steel product; the composition of the pre-plating copper solution is: 150g / LCuSO 4 ·5H 2 O, 20g / LH 2 SO 4 , 0.05g / LNaCl;

[0018] (3) Copper replating: immerse the stainless steel product obtained in step (2) into the copper replating solution for electroplating, with a current density of 10A / dm 2 , the temperature is 50 ℃, and the copper plating layer of the desired thickness is obtained by c...

Embodiment 3

[0019] Embodiment three: a kind of method for stainless steel copper plating, comprises following process steps:

[0020] (1) Degreasing: use metal degreaser to remove oil stains on the surface of stainless steel products, and then clean them with 80°C hot water;

[0021] (2) Pre-plating copper: immerse the cleaned stainless steel product in the pre-plating copper solution for electroplating, and the current density is 2A / dm 2 , the temperature is 30°C, and the electroplating time is controlled to obtain a copper coating with a thickness of 2 microns on the surface of the stainless steel product; the composition of the pre-plating copper solution is: 120g / LCuSO 4 ·5H 2 O, 15g / LH 2 SO 4 , 0.02g / LNaCl;

[0022] (3) Copper replating: immerse the stainless steel product obtained in step (2) into the copper replating solution for electroplating, with a current density of 5A / dm 2 , the temperature is 30 ℃, and the copper plating layer of the desired thickness is obtained by con...

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Abstract

The invention relates to a method for coppering copper on a stainless steel. The method is characterized by comprising the following steps of (1) removing oil stains on the surface of a stainless steel product by a metal decontaminant, then cleaning by hot water; (2) pre-coppering: immersing the cleaned stainless steel product into a pre-coppering liquor for electroplating, controlling the electroplating time so as to obtain a 0.5-5 micron thick copper clad layer on the surface of the stainless steel product, wherein the electric current density is 0.1-3A / dm<2>, the temperature is 20-50DEG C, the pre-coppering liquor comprises the following components: 100-150g / L of CuSO4.5H2O, 10-20g / L of H2SO4 and 0.01-0.05g / L of NaCl; (3) coppering again: immersing the stainless steel product obtained in the step (2) into a second coppering liquor for electroplating, and controlling the electroplating time so as to obtain the copper clad layer of the required thickness, wherein the electric current density is 2-10A / dm<2>, the temperature is 20-50DEG C, the second coppering liquor comprises the following components: 160-200g / L of CuSO4.5H2O, 50-70g / L of H2SO4, and 0.02-0.08g / L of NaCl. The copper clad layer prepared by the method has good binding force, the problem of severe pollution to environment is solved, and the production cost is lowered.

Description

technical field [0001] The invention relates to a copper plating method for stainless steel. Background technique [0002] Copper plating on the surface of stainless steel can make stainless steel corrosion resistant and improve mechanical properties. However, since a thin and transparent passivation oxide film is easily formed on the surface of stainless steel, the oxide film will affect the bonding force between the copper plating layer and the stainless steel. Therefore, it is difficult to obtain a copper coating with excellent bonding force on the surface of stainless steel. [0003] The commonly used method is to remove the oxide film and then pre-plate a certain thickness of nickel before stainless steel copper plating. The process mainly includes: chemical degreasing, water washing, etching, dust removal, electrolytic activation, impact pre-nickel plating and copper plating. The technological process has many disadvantages, high production cost and serious environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/10C25D3/38
Inventor 余建林
Owner WUXI BAOSHUN STAINLESS STEEL