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Method of repair nickel coating no metal coated piece

A metal plating and re-plating technology, which is applied in the field of nickel re-plating on metal plating parts, can solve the problems of complicated operation, bad impression of users, long working hours, etc., and achieve the effect of simplifying the process, ensuring the bonding force and simple operation

Inactive Publication Date: 2006-01-25
CHONGQING CONSTR ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is not only complicated to operate, but also takes a long time to work in the whole process, and the bonding force of the coating after repairing is not good.
Some of them showed up at the time, and some showed up after delivery, leaving a very bad impression on users.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Use conventional methods to degrease and clean the surface of the metal plated parts. According to hydrochloric acid: 300 g / liter, use a nickel cathode plate, use an anodic current of 2 amps / square decimeter for 3 minutes of electric acid activation, and then use conventional methods. The method is to re-plate bright nickel, wash twice, activate sulfuric acid, plate bright chrome, and re-plate 10 shift pedals. After plating, the binding force of the coating was measured by the file method, and the test result was qualified.

Embodiment 2

[0018] Use the conventional method to degrease and clean the surface of the metal plated parts. According to hydrochloric acid: 300 g / liter, use a nickel cathode plate, activate the electric acid with an anode current of 2.5 amps / square decimeter for 2.5 minutes, and then use conventional The method is to re-plate bright nickel, wash twice, activate sulfuric acid, plate bright chrome, and re-plate 10 shift pedals. After plating, the binding force of the coating was measured by the file method, and the test result was qualified.

Embodiment 3

[0020] Use the conventional method to degrease and clean the surface of the metal plated parts, according to hydrochloric acid: 330 g / liter, use nickel cathode plate, use 3 anode current per square decimeter for 2 minutes of electric acid activation, and then use conventional The method is to re-plate bright nickel, wash twice, activate sulfuric acid, plate bright chrome, and re-plate 10 pieces of shock-absorbing springs. After plating, the binding force of the coating was measured by the file method, and the test result was qualified.

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PUM

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Abstract

The invention discloses a method to complement nickel-plating of metal plating component. It includes the following steps: cleaning the surface of metal plating component by common method; using HCL 250-400 g / L as electrical acid active electrical acid solution, impressing anode current at 2-4 A per square decimeter on the component, adopting nickel board as cathode and lasting for 1-3 minutes; using common method to complement nickel, cleaning, activating and plating chrome. The invention could make the component has good binding power, and it is simple technology.

Description

technical field [0001] The invention belongs to the field of surface treatment of metal materials, and in particular relates to a nickel replating method for a metal plating piece with good bonding force after replating and simple operation. Background technique [0002] In the process of industrial production, it is often necessary to electroplate the surface of parts to improve the anti-corrosion performance and decoration of the surface. In the process of decorative chrome plating, due to some uncontrollable factors sometimes, the coating is partially incomplete or faded. When this happens, the unqualified coating does not need to be removed and re-plated, but only needs to be re-plated, that is, it will be removed. A thin decorative chromium layer (only 0.25-0.5 microns) and a part of the nickel layer are added to the thickness of the nickel layer, and then the decorative chromium layer is electroplated. At present, the process flow of replating is: anode degreasing→cat...

Claims

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Application Information

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IPC IPC(8): C25D3/12C25D5/06C25D5/34
Inventor 时毅容
Owner CHONGQING CONSTR ELECTROMECHANICAL CO LTD
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