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Preparation method for convex-hull-shaped abrasion-resistant nickel-plated coating reinforced through hard particles

A technology of hard particles and convex hull shape, which is applied in the field of preparation of convex hull-shaped wear-resistant nickel plating layer to achieve excellent wear resistance and fine and uniform coating surface

Inactive Publication Date: 2015-12-23
SUZHOU SHANGKANG NEW MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface hardness required by some corresponding mechanical parts is as high as possible within a certain range. By adding hard particles to the metal coating, such as SiC, Si3N4, Al2O3, etc. have high hardness, wear resistance and corrosion resistance. Doping particles can further increase the hardness of the surface coating, thereby improving its wear resistance, but there is no relevant report in the prior art that uses hard particles as doping particles to prepare a nickel coating with a convex hull structure

Method used

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  • Preparation method for convex-hull-shaped abrasion-resistant nickel-plated coating reinforced through hard particles
  • Preparation method for convex-hull-shaped abrasion-resistant nickel-plated coating reinforced through hard particles

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Embodiment 1

[0033] This embodiment relates to a method for preparing a convex hull-shaped wear-resistant nickel plating layer strengthened by hard particles, comprising the following steps:

[0034] A. Preparation of the base material to be deposited: select 45# steel plate as the base material, the surface of the 45 # steel plate is polished by sandpaper, the surface roughness is 0.5~0.6 microns, and the surface is cleaned by acetone ultrasonic, alkaline cleaning and acid activation ;

[0035] B. Electroplating solution with hard particles: select hard particle SiC with a particle size of 20 μm, first place SiC in distilled water, disperse it with ultrasonic waves for 2 hours, then add distilled water containing SiC to the prefabricated electroplating solution, and use magnetic force The stirrer was stirred for 6.5 hours to obtain an electroplating solution containing uniformly dispersed SiC, which contained the following components in the electroplating solution:

[0036] Ni(SO 3 NH ...

Embodiment 2

[0045] This embodiment relates to a method for preparing a convex hull-shaped wear-resistant nickel plating layer strengthened by hard particles, comprising the following steps:

[0046]A. Preparation of the base material to be deposited: select 42CrMo steel plate as the base material, the surface of the 42CrMo steel plate is polished by sandpaper, the surface roughness is 1-1.2 microns, and the surface is cleaned by acetone ultrasonic, alkaline cleaning and acid activation;

[0047] B. Electroplating solution with hard particles: select hard particles Al 2 o 3 , with a particle size of 30 μm, the Al 2 o 3 Place in distilled water, disperse with ultrasonic waves for 2 hours, and then 2 o 3 Distilled water was added to the prefabricated electroplating solution and stirred for 6.5 hours with a magnetic stirrer to obtain a homogeneously dispersed Al 2 O3 electroplating solution, the electroplating solution containing hard particles after dispersion treatment can be evenly di...

Embodiment 3

[0058] This embodiment relates to a method for preparing a convex hull-shaped wear-resistant nickel plating layer strengthened by hard particles, comprising the following steps:

[0059] A. Preparation of the base material to be deposited: select Cu as the base material, the Cu surface is polished and polished by sandpaper, the surface roughness is 0.8-1 micron, and the surface is cleaned by acetone ultrasonic, alkaline cleaning and acid activation;

[0060] B. Electroplating solution with hard particles: select hard particles Si3N4 with a particle size of 50 μm, first place Si3N4 in distilled water, disperse with ultrasonic waves for 2 hours, then add distilled water containing Si3N4 to the prefabricated electroplating solution, and use magnetic force The stirrer was stirred for 6.5 hours to obtain an electroplating solution containing uniformly dispersed Si3N4, which contained the following components in the electroplating solution:

[0061] Ni(SO 3 NH 2 ) 2 4H 2 O400g / L...

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Abstract

The invention discloses a preparation method for a convex-hull-shaped abrasion-resistant nickel-plated coating reinforced through hard particles. The preparation method comprises the following steps that substrate materials to be deposited are prepared, electroplate liquid of the hard particles is prepared, electro-deposition and thermal treatment are conducted, and the nickel composite coating which is of a convex-hull-shaped structure and contains the hard particles is prepared under the condition of chemical electroplating. According to the preparation method for the convex-hull-shaped abrasion-resistant nickel-plated coating reinforced through the hard particles, the technique of composite electroplating is adopted, a convex-hull-shaped structured surface is obtained by controlling pulse electroplating conditions, and the surface of the coating is fine and uniform; due to the fact that the hard particles have the function of dispersion strengthening, and the surface appearance of the composite coating is in a convex-hull shape, so that compared with a traditional nickel-plated coating, the composite coating is better in abrasion resistance.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a method for preparing a convex hull-shaped wear-resistant nickel plating layer strengthened by hard particles. Background technique [0002] Friction and wear is a basic type of component failure, which will not only cause waste of energy and material consumption, but also reduce production efficiency and scrap parts and equipment, resulting in huge economic losses. The friction and wear of materials is mainly closely related to the surface state of the material. In order to improve the performance of this kind of material, its surface performance must be improved. [0003] Composite electroplating is to co-deposit solid particles and metals by electroplating to obtain a composite coating with a dispersed particle structure in the matrix metal on the substrate. It is a surface treatment technology developed on the basis of traditional electroplating. The commonly used do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D5/18C25D3/12
Inventor 胡文彬刘磊吴忠刘德荣
Owner SUZHOU SHANGKANG NEW MATERIAL SCI & TECH CO LTD
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