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Method for non-cyanide copper electroplating of steel parts

A technology for electroplating copper and steel, applied in the field of electroplating copper for steel parts, can solve the problems of fast consumption, high cost, pollution of cyanide, etc., and achieve the effects of reduced consumption, cost reduction, and cost reduction

Active Publication Date: 2009-09-30
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cyanide-free electroplating copper for iron and steel parts in order to solve the problems that cyanide is easy to pollute the air and water sources and cyanide will be naturally oxidized in the plating solution and oxidized on the electrode, which is fast consumed and high in cost. Methods

Method used

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specific Embodiment approach 1

[0008] Specific embodiment one: the method for cyanide-free electroplating copper on iron and steel parts in this embodiment is realized according to the following steps: One, immerse the iron and steel parts in a chemical degreasing solution with a temperature of 50 to 80 ° C and a concentration of 40 to 60 ml / liter, soak The time is 5 to 15 minutes. After taking it out, it is used as a cathode and inserted into the electrolytic oil solution with a temperature of 40 to 60 ° C and a concentration of 40 to 60 grams per liter. With stainless steel as the anode, the current density is 1.0 to 3.0 A / dm 2 Electrodegreasing the cathode for 1 to 5 minutes under the condition of deionized water, and then immersing it in hydrochloric acid with a volume percentage of 5% to 10% at room temperature for 10 to 60 seconds; After the treated iron and steel parts are cleaned with deionized water, they are immersed in a cyanide-free copper immersion solution at a temperature of 15-35°C for 20-120...

specific Embodiment approach 2

[0011] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the current density in step 1 is 1.5-2.5A / dm 2 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the current density in step one is 2.0A / dm 2 . Others are the same as in the first embodiment.

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Abstract

The invention discloses a method for non-cyanide copper electroplating of steel parts, which relates to a method for copper electroplating of the steel parts. The method solves the problems that cyanide is easy to pollute air and water sources, can be naturally oxidized in plating baths, is oxidized on electrodes and has quick consumption and high cost. The method for the non-cyanide copper electroplating of the steel parts is realized according to the following steps of oil removal, non-cyanide copper leaching and copper electroplating, and thus the steel parts with electroplated copper are obtained. The steel parts with the electroplated copper prepared by the method have unpeeled plating layers, do not blister, and have good bonding force after high-temperature treatment. The method has simple process and convenient operation.

Description

technical field [0001] The invention relates to a method for electroplating copper on iron and steel parts. Background technique [0002] Copper-nickel-chromium, copper-nickel-imitation gold or copper-multilayer nickel-chromium electroplating process is a combination of electroplating processes with a wide range of applications. Acidic sulfate copper plating has been developed quite maturely, but it is not suitable for electroplating copper on iron base, because once the iron and steel parts enter the acid plating solution, the replacement reaction will occur instantly, resulting in a replacement copper layer with many pores and loose structure. The underlying copper in the above combination of treatment processes for steel parts is generally obtained by cyanide copper plating, and the electroplating process has used cyanide electrolytes for more than 100 years. Cyanide copper plating process, this is because the cyanide copper plating solution has some good properties, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/38C25D5/26C25D5/36
Inventor 杨其国崔春兰赵旭红李敏戚道炼高祥娟吴子若
Owner HARBIN TURBINE
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