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Chromium plating process capable of forming high wear resistant plating

A highly wear-resistant and technologically advanced technology, applied in the plating of superimposed layers, metal material coating processes, coatings, etc., can solve the problems of low bonding force between plastic and coating, poor deep plating ability and unevenness of the coating, etc. To achieve the effect of enhancing decorative effect and added value, prolonging surface durability, and excellent high temperature resistance

Inactive Publication Date: 2020-12-04
深圳市生利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, many electroplating processes do not properly treat the plastic surface before electroplating treatment, resulting in unstable and uneven coatings after electroplating, poor deep plating ability of coatings, brittle coatings, short service life, and easy Severe wear and tear on the surface exposes the plastic background color and affects the aesthetics. At the same time, the bonding force between the plastic and the coating is not high, which leads to problems such as blistering and cracking of the coating
In addition, the magnetic permeability of the coating obtained by the electroplating solution during electroplating is also high, which limits its use.

Method used

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  • Chromium plating process capable of forming high wear resistant plating
  • Chromium plating process capable of forming high wear resistant plating
  • Chromium plating process capable of forming high wear resistant plating

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preparation example Construction

[0062] The preparation method of the nickel alloy electroplating solution includes the following steps: uniformly mixing nickel salt, phosphorus-containing inorganic acid and its salt, and organic acid to obtain the nickel alloy electroplating solution.

[0063] The concentration of the nickel salt, the concentration of phosphorus-containing inorganic acid and its salt, the concentration of citric acid, the concentration of malic acid and other components of the present invention all refer to the concentration of the nickel alloy electroplating solution.

[0064] In one embodiment, the reagent used in the chromium plating process is a chromium electroplating solution, including components with the following concentrations: 45-65 g / L trivalent chromium, 40-70 g / L hydrochloric acid; preferably, the chromium electroplating solution Including the following concentrations of components: 55g / L trivalent chromium, 55g / L hydrochloric acid.

[0065] The solvent of the roughening soluti...

Embodiment 1

[0088] Embodiment 1 of the present invention provides a chrome-plating process with high wear-resistant coating, comprising the following steps: roughening, neutralization, adjustment, palladium activation, reduction, chemical nickel plating, copper plating, nickel alloy plating, chrome plating, drying , Vacuum PVD electroplating.

[0089] The reagent used in the roughening process is a roughening liquid, which includes components with the following concentrations: 430 g / L chromic anhydride and 385 g / L sulfuric acid.

[0090] The reagent used in the neutralization process is a neutralization solution, which includes components with the following concentrations: 60 mL / L hydrochloric acid.

[0091] The reagents used in the adjustment process are adjustment solutions, including components with the following concentrations: 10 g / L sodium hydroxide, 80 g / L hydrochloric acid, and 80 mL / L adjustment agents.

[0092] The adjusting agent includes 2,3-difluoro-5-methylbenzoic acid, γ-b...

Embodiment 2

[0114] Embodiment 2 of the present invention provides a chrome plating process with high wear-resistant coating, comprising the following steps: roughening, neutralization, adjustment, palladium activation, reduction, chemical nickel plating, copper plating, nickel alloy plating, chrome plating, drying , Vacuum PVD electroplating.

[0115] The reagent used in the roughening process is a roughening liquid, which includes components with the following concentrations: 430 g / L chromic anhydride and 385 g / L sulfuric acid.

[0116] The reagent used in the neutralization process is a neutralization solution, which includes components with the following concentrations: 60 mL / L hydrochloric acid.

[0117] The reagents used in the adjustment process are adjustment solutions, including components with the following concentrations: 25g / L sodium hydroxide, 120g / L hydrochloric acid, and 120mL / L adjustment agent.

[0118] The adjusting agent includes 2,3-difluoro-5-methylbenzoic acid, γ-but...

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Abstract

The invention relates to the technical field of electroplating processes, in particular to a chromium plating process capable of forming a high wear resistant plating. The chromium plating process comprises the following steps of coarsening, neutralizing, turning, palladium activating, reducing, chemical nickel plating, copper plating, nickel alloy plating, chromium plating, drying and vacuum PVD(physical vapor deposition) electroplating. The bonding force between the plating and plastic is increased, and the phenomena of plating looseness, bubbles, cracks and the like after electroplating are avoided; the surface durability of the product is prolonged, and the suface has excellent comprehensive performance, such as high temperature resistance and corrosion resistance; the magnetic conductivity can be smaller than 1.1; and through vacuum PVD electroplating, the decorative effect and the additional value of a plastic product are further improved.

Description

technical field [0001] The present invention relates to the technical field of electroplating technology, and more particularly, the present invention relates to a chrome plating process with high wear resistance of the coating layer. Background technique [0002] Compared with metal parts, plastic electroplating products can not only achieve a good metal texture, but also reduce the weight of the product. While effectively improving the appearance and decoration of the plastic, it also improves its performance in terms of electricity, heat and corrosion resistance. , improving the mechanical strength of its surface. PVD, physical vapor deposition, is an advanced surface treatment technology widely used in the world. Its working principle is that under vacuum conditions, the gas or the evaporated material is partially ionized by gas discharge, and the evaporated material or its reactant is deposited on the substrate at the same time as the bombardment of the gas ions or the...

Claims

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Application Information

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IPC IPC(8): C23C18/36C23C18/30C25D3/38C25D3/06C25D5/12C23C14/35C23C14/16C23C28/02
CPCC23C14/165C23C14/35C23C18/30C23C18/36C23C28/021C25D3/06C25D3/38C25D5/12
Inventor 王小锋
Owner 深圳市生利科技有限公司