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Electroplating method for improving surface corrosion resistance of metal pipe fitting

A metal pipe fitting, corrosion-resistant technology, applied in the field of metal surface treatment, can solve the problems of uneven surface roughness of metal pipe fittings, poor adhesion strength of corrosion-resistant layer, limited corrosion-resistant performance, etc. Corrosion effect, the effect of improving corrosion resistance and other properties

Inactive Publication Date: 2021-04-16
衢州创普机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, to improve the corrosion resistance of metal pipe fittings, electroplating corrosion-resistant layer is often used to improve the corrosion resistance of pipe fittings. Although the corrosion resistance can be improved, the surface layer of metal pipe fittings is mostly rough and uneven, and the bonding strength with the corrosion-resistant layer Poor, the corrosion-resistant layer is easy to fall off after electroplating, which limits the improvement of corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]The electroplating method of increasing the corrosion resistance of the surface of the metal pipe member includes the following steps:

[0030]Step 1. Surface cleaning treatment: First feed the metal tube into the cleaning agent, ultrasonic dispersion, ultrasonic dispersion power is 500W, and the ultrasonic time is 20 min, then it is then sent to phosphoric acid, and hydrochloric acid continues to soak for 20 min. The soaking temperature is 65 ° C, washed once with boiling water, and finally dried to room temperature;

[0031]Step 2, the preparation of the wrap: Ni powder was added to the total amount of 2 times the total amount of Ni powder, and then sent into the smelting furnace for smelting, the melting temperature was 1000 ° C, smelted for 20 min, then add SiC total 5 % Homogeneizer, continuing to smelting 5min, preferably cooling to room temperature, ground 50 mesh, to obtain a wandering agent;

[0032]Step three, the treatment of the murder layer: feed the metal tube into the la...

Embodiment 2

[0044]The electroplating method of increasing the corrosion resistance of the surface of the metal pipe member includes the following steps:

[0045]Step 1, surface cleaning treatment: The metal tube is first sent to the cleansing agent, the ultrasonic dispersion power is 500W, the ultrasonic time is 20 min, and then the phosphoric acid is then sent to phosphoric acid, hydrochloric acid continues to be soaked in a mixed acid of 1: 2. 30 min. , The soaking temperature is 75 ° C, washed 3 times with boiling water, and finally dried to room temperature;

[0046]Step 2, the preparation of the melt: Ni powder was added to a SiC powder of 3 times the total amount of Ni powder, and then sent into the smelting furnace for smelting, the melting temperature was 1500 ° C, smelted for 30 min, then add SiC total amount 10 % Homogeneizer, continuing to smelting 10 min, preferably cooling to room temperature, ground 100 mesh, gave a wrap agent;

[0047]Step three, the treatment of the murder layer: feed th...

Embodiment 3

[0059]The electroplating method of increasing the corrosion resistance of the surface of the metal pipe member includes the following steps:

[0060]Step 1, surface cleaning treatment: Put the metal pipe first into the cleaning agent, ultrasonic dispersion, ultrasonic dispersion power is 500W, and the ultrasonic time is 20 min, and then the phosphoric acid is then fed to phosphoric acid, and hydrochloric acid continues to be soaked in a mixed acid of 1: 2. 25min , The soaking temperature is 70 ° C, washed twice with boiling water, and finally dried to room temperature;

[0061]Step II. Preparation of the melt: Ni powder added to the total amount of 2.5 times the total amount of Ni powder, and then fed into the smelting furnace for smelting, the melting temperature was 1250 ° C, molten 25min, then add SiC total amount 5 -10% homogeneizer, continuing to smelting 7.5min, preferably cooled to room temperature, ground 75 mesh, to obtain a wrap agent;

[0062]Step three, the treatment of the murde...

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Abstract

The invention discloses an electroplating method for improving surface corrosion resistance of a metal pipe fitting. The electroplating method comprises the following step of firstly, surface cleaning treatment, wherein the metal pipe fitting is firstly fed into a cleaning agent to be subjected to ultrasonic dispersion, the ultrasonic dispersion power is 500 w, and the ultrasonic time is 20 min. The metal pipe fitting is subjected to surface cleaning treatment firstly, impurity particles on the surface of the pipe fitting are removed, cleaning agent treatment is adopted in the cleaning process, bentonite is adopted as a main agent of the cleaning agent, the bentonite has a lamellar structure, surface activity modification is conducted on bentonite lamellas through sodium molybdate and sodium dodecyl benzene sulfonate in the grinding process, the active performance between the bentonite lamellas is improved, then in the cleaning process, the metal pipe fitting is ground through the laminar layer of the bentonite under assistance of ultrasonic dispersion, then the surface structure of the pipe fitting is refined, and uniformity of the surface of the pipe fitting is improved.

Description

Technical field[0001]The present invention relates to the field of metal surface treatment, and more particularly to an electroplating method for improving corrosion resistance of metal pipe fittings.Background technique[0002]Metal often varying degrees of oxidation, corrosion, etc. during processing, treatment, and use, reducing the life of metal materials or metal equipment, and therefore, it is necessary to treat the surface of the metal, increase its anti-oxidation, toughness, and corrosion resistance. ,Extended service life.[0003]Electroplating refers to a surface processing method of the pre-plated medium in the plating solution in the plating solution in the pre-plated metal to form a surface processing method of the plating layer in the plating solution in the pre-plated metal solution. Plating properties are different from matrix metal, with new features. Depending on the function of the plating, it is divided into protective plating, decorative plating and other functional...

Claims

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Application Information

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IPC IPC(8): C23C28/02C25D3/12C25D7/04C25D15/00C23C4/08C23C4/134C23C24/10
Inventor 柯雪丽
Owner 衢州创普机械设备有限公司
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