Method for plating copper on stainless steel

A technology of stainless steel and copper plating, which is applied in the field of electrochemistry, can solve problems such as environmental pollution and reduce production costs, and achieve the effects of reducing environmental pollution, reducing industrial processes, and reducing corrosion

Active Publication Date: 2013-08-21
红木枋家居科技(湖州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the serious pollution of the environment caused by the use of a large amount of strong acid in the traditional stainless steel copper plating process, reduce the production cost and simplify the process flow, the present invention provides a stainless steel copper plating method, which uses pulse electroplating iron-nickel-chromium A new process of copper plating after composite film to replace the traditional stainless steel surface decoration method of strong acid corrosion, electroplating nickel and then copper plating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The formula of the pre-plating solution containing iron, nickel and chromium metal cations is: 110g / L CrCl 3 ·6H 2 O, 45g / L NiCl 2 ·6H 2 O, 30g / L FeCl 2 ·4H 2 O, 15g / L NaCl, 30g / L NH 4 Cl, 20g / L H 3 BO 3 , 20g / L Glycine.

[0024] The formula of acid sulfate bath: 180g / L CuSO 4 ·5H 2 O, 60g / L H 2 SO 4 , 0.06g / L Cl - .

[0025] The process is as follows: Take a stainless steel plate with a length of 10cm, a width of 5cm, and a thickness of 3mm, and one side of the stainless steel plate is insulated. Under the conditions of a treatment time of 2min and a temperature of 55℃, use the 2 CO 3 , 15g / L Na 3 PO 4 ·12H 2 O, 8g / L JT-100 (maleic anhydride acrylic copolymer) solution is thoroughly degreasing, washed with distilled water, placed on the conductive cathode plate in the electrolytic tank of the pre-plating solution, and the metal corresponding to the pre-plating solution The plate is the anode, and the cathode current density is 1A / dm2, the temperature is 25℃, the frequency i...

Embodiment 2

[0027] The formula of the pre-plating solution containing iron, nickel and chromium metal cations is: 100g / L CrCl 3 ·6H 2 O, 30g / L NiSO 4 , 20g / L FeSO 4 , 5g / L Na 2 SO 4 , 30g / L NH 4 Cl, 25g / L NaCl, 20g / L H 3 BO 3 , 15g / L thiourea.

[0028] The formula of acid sulfate bath: 170g / L CuSO 4 ·5H 2 O, 70g / L H 2 SO 4 , 0.06g / L Cl - .

[0029] The process is as follows: Take a stainless steel plate with a length of 25cm, a width of 40cm, and a thickness of 2mm. One side of the stainless steel plate is insulated. Under the conditions of a treatment time of 2min and a temperature of 60℃, use 10g / L NaOH, 20g / L Na 2 CO 3 , 15g / L Na 3 PO 4 ·12H 2 O, 8g / L JT-100 (maleic anhydride acrylic copolymer) solution is thoroughly degreasing, washed with distilled water, placed on the conductive cathode plate in the electrolytic tank of the pre-plating solution, and the metal corresponding to the pre-plating solution The plate is the anode, and the cathode current density is 2A / dm2, the temperature is...

Embodiment 3

[0031] The formula of the pre-plating solution containing iron, nickel and chromium metal cations: 130g / L CrCl 3 ·6H 2 O, 40g / L NiCl 2 ·6H 2 O, 20g / L FeCl 2 ·4H 2 O, 5g / L NaCl, 30g / L NH 4 Cl, 20g / L H 3 BO 3 , 30g / L 5-sulfosalicylic acid.

[0032] The formula of acid sulfate bath: 180g / L CuSO 4 ·5H 2 O, 60g / L H 2 SO 4 , 0.06g / L Cl - .

[0033] The process is as follows: take a stainless steel plate with a length of 25cm, a width of 40cm, and a thickness of 2mm, and one side of the stainless steel plate is insulated. Under the conditions of a treatment time of 2min and a temperature of 60℃, use 10g / L NaOH, 20g / L Na 2 CO 3 , 15g / L Na 3 PO 4 ·12H 2 O, 8g / L JT-100 (maleic anhydride acrylic copolymer) solution is completely degreasing, washed with distilled water, and placed on the conductive cathode plate in the electrolytic tank of the pre-plating solution, with the metal corresponding to the pre-plating solution The plate is the anode. Under the conditions of cathode current densi...

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PUM

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Abstract

The invention discloses a method for plating copper on a decorative stainless steel plate. The method comprises the following steps of: carrying out chemical oil removal on a stainless steel material and then putting the stainless steel material into a pre-plating solution containing iron, nickel and chromium cations to carry out pulse electroplating to obtain a grey iron-nickel-chromium compound film witch a certain thickness; and finally, enabling the grey iron-nickel-chromium compound film to enter an acidic copper sulfate solution to carry out direct-current copper electroplating. Compared with a conventional stainless steel electroplating method, the method provided by the invention has the advantages that steps of etching, removing hung ash, electrolyzing and activating, pre-plating the nickel and the like are reduced; industrial flows are obviously reduced and seem to be simple; the production efficiency is improved and the industrial production cost is reduced; meanwhile, a lot of strong acids are not needed so that an industrial operation environment is obviously improved and the environmental pollution is reduced; and an oxidized film on the surface of stainless steel does not need to be etched in advance in the process disclosed by the invention so that the method has the very great adaptability to the stainless steel materials with different chemical components.

Description

Technical field [0001] The invention belongs to the technical field of electrochemistry, and relates to a method for processing a stainless steel surface that first adopts pulse electroplating of a composite metal layer and then copper plating. Background technique [0002] Stainless steel copper-plated processing is a technical and artistic processing on the surface of stainless steel to obtain various brilliant colors of copper-plated stainless steel. The colors are golden, brown, bronze, etc. Its color is gorgeous, it has the characteristics of strong corrosion resistance, high mechanical performance, and long-lasting color surface layer. Therefore, it is widely used for decoration of hall wall panels, ceilings, elevator car panels, car box panels, building decoration, signboards, etc. However, a thin and transparent passive oxide film is easily formed on the surface of stainless steel, which will affect the bonding force of the coating and the stainless steel substrate. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/12C25D5/18
Inventor 郑精武陈思远姜力强乔梁蔡伟车声雷
Owner 红木枋家居科技(湖州)有限公司
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