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Multilayer nickel-iron alloy composite coating process

An iron alloy and multi-layer nickel technology, which is applied in the field of multi-layer nickel-iron alloy composite coating process, can solve the problems of complex electroplating process, coating thickness, poor hardness and corrosion resistance, etc., and achieve simple coating process and bright and smooth coating surface , the effect of high hardness

Inactive Publication Date: 2003-03-26
王旭东 +2
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This process has the following defects: 1. The metal to be plated must be placed in the electrolytic tank for electroplating treatment; 2. The metal to be plated needs to be sprayed and shaved before electroplating; 3. The electroplating process is complicated; 4. The thickness and hardness of the coating , poor corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] 1. Use sodium carbonate cleaning solution to degrease the metal surface, and use 31% hydrochloric acid to derust the plated metal surface;

[0009] 2. Weigh nickel chloride, sodium acetate, nickel sulfate, ferrous sulfate, and ferric chloride to be 60 grams, 60 grams, 250 grams, 10 grams, and 10 grams, respectively, and dissolve them in one liter of water. Add 25 grams of boric acid in the solution to obtain solution (A).

[0010] 3. Get 250 grams of nickel sulfamate and 60 grams of nickel chloride and dissolve them in one liter of water, then add boric acid until the solution is in a saturated state to obtain solution (B);

[0011] 4. Fully mix the solution (A) and the solution (B) to prepare the mixed solution (C), and the pH value of the mixed solution (C) is 3.5.

[0012] 5. Apply the solution (A), solution (B) and mixed solution (C) evenly on the surface of the coating in sequence with a coater. The working current of the coater is 0.5-30A, and the working voltage...

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PUM

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Abstract

The invention discloses a multi-layer Ni-Fe alloy complexly smearing-plating technique. It includes: make degreasing and rust cleaning on metal surface; make the mixing solution (A) of nickelous chloride, natrium acetate, nickel sulfate, ferrous sulphate and ferrous chloridize; make saturated solution (B) by using amido-sulfonic nickel, nickelous chloride and boric acid; first smear A, then smear B to make the thickness reaches the requirement, and then mix A and B to make mixing solution (C) which is evenly smeared on the coat surface.

Description

[0001] Said field: [0002] The invention discloses a metal surface coating process, in particular to a multi-layer nickel-iron alloy composite coating process. Background technique: [0003] The currently used nickel-iron alloy electroplating process is to first spray the surface of the metal to be plated, and use electrolytic degreasing and nitric acid to remove the oxidation film for pre-treatment; then put it into the electrolyte to electroplate nickel-iron. The electrolyte is mainly prepared from raw materials such as nickel sulfate, iron sulfate and nickel chloride. This process has the following defects: 1. The metal to be plated must be placed in the electrolytic tank for electroplating treatment; 2. The metal to be plated needs to be sprayed and shaved before electroplating; 3. The electroplating process is complicated; 4. The thickness and hardness of the coating , Poor corrosion resistance. Invention content: [0004] The purpose of the present invention is exac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D5/06C25D5/10
Inventor 李文渊王旭东王旭生
Owner 王旭东
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