Hardware chromium plating technology

A process and hardware technology, applied in the field of hardware chrome plating process, can solve problems such as the great influence of the chrome layer, the surface is not wear-resistant, and the activation is not in place.

Inactive Publication Date: 2016-06-22
苏州市美能五金镀饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] If the hardware products are not electroplated, they are easy to rust and age, and the surface is not wear-resistant and not beautiful
The chrome plating process has a lot to do with the strength and corrosion resistance of the coating, especially the pretreatment process of chrome plating has a great influence on the chromium layer. Many chrome plating failures are due to inadequate pretreatment work, such as degreasing, wax removal, and oil removal. , activation is not in place and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Metal chrome plating process, including the following steps:

[0041] Degreasing: immerse the hardware to be plated in an alkaline degreasing agent at 61°C for 15 minutes to degrease. The pH value of the alkaline degreasing agent is 8 to remove the grease on the surface of the hardware; Clean the hardware to be plated with sodium hydroxide solution, and use ultrasonic to dry to further remove the grease on the surface of the hardware; wax removal: use trichlorethylene solvent to remove wax from the hardware to be plated, soaking time 10min, soaking temperature 30 ℃, To remove the wax layer on the surface of the hardware; degreasing: use a solution containing an anion / non-amphophoteric surfactant to degrease the hardware to be plated, and the anion / non-amphophoteric surfactant is a sulfonate of fatty acid methyl ester ethoxylate , the content is 1%, the treatment temperature is 30°C, and the oil layer on the surface of the hardware is removed by a surfactant; the second ...

Embodiment 2

[0043] Metal chrome plating process, including the following steps:

[0044] Degreasing: immerse the hardware to be plated in an alkaline degreasing agent at 65°C for 30 minutes to degrease, the pH value of the alkaline degreasing agent is 14; the first cleaning: use sodium hydroxide solution with a pH value of 14 to clean the hardware to be plated parts, and use ultrasonic to dry; dewaxing: use trichlorethylene solvent to dewax the hardware to be plated, soaking time 20min, immersion temperature 50 ℃; degreasing: use an anionic / non-amphoteric surfactant solution to be plated hardware The anionic / non-amphoteric surfactant is the sulfonate of fatty acid methyl ester ethoxylate, the content is 5%, and the treatment temperature is 50°C; the second cleaning: clean with pure water, and the wash temperature is 50°C ; Anodic electrolytic degreasing: take the hardware to be plated as the anode and the stainless steel plate as the cathode, in a solution environment with a pH value of 1...

Embodiment 3

[0046] Metal chrome plating process, including the following steps:

[0047] Degreasing: immerse the hardware to be plated in an alkaline degreasing agent at 62°C for 20 minutes to degrease, the pH value of the alkaline degreasing agent is 11; the first cleaning: use sodium hydroxide solution with a pH value of 11 to clean the hardware to be plated parts, and use ultrasonic to dry; dewaxing: use trichlorethylene solvent to dewax the hardware to be plated, soaking time 15min, immersion temperature 40 ℃; degreasing: use anionic / non-amphoteric surfactant solution to be plated hardware The anionic / non-amphoteric surfactant is the sulfonate of fatty acid methyl ester ethoxylate, the content is 3%, and the treatment temperature is 40°C; the second cleaning: clean with pure water, and the wash temperature is 40°C ; Anodic electrolytic degreasing: take the hardware to be plated as the anode and the stainless steel plate as the cathode, in a solution environment with a pH value of 11, ...

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Abstract

The invention discloses a hardware chromium plating technology which comprises the following steps: performing degreasing so as to remove grease from the surface of hardware; performing cleaning repeatedly so as to further remove grease from the surface of the hardware; performing wax removal so as to remove a wax layer from the surface of the hardware; performing oil removal so as to remove an oil layer from the surface of the hardware through a surfactant; performing anodic electrolysis oil removal so as to further remove the oil layer from the from the surface of the hardware; performing acid activation repeatedly so as to increase the electroplating efficiency; performing bright copper plating so that a final plating has adhesive force, corrosion resistance, wear resistance and glossiness; performing acid copper plate so that the final plating has adhesive force, corrosion resistance, wear resistance and glossiness; performing nickel plating so that the final plating has adhesive force, corrosion resistance, wear resistance and glossiness; performing golden nickel so that co-deposition of particles and nickel is realized to form a composite plating; performing chromium plating so that the final plating has adhesive force, corrosion resistance, wear resistance and glossiness; performing passivation; performing air blowing; and performing baking and the like so as to improve the adhesive force, corrosion resistance, wear resistance and glossiness of a chromium plating.

Description

technical field [0001] The invention relates to the field of electrochrome plating, in particular to a metal chrome plating process. Background technique [0002] If the hardware products are not electroplated, they are easy to rust and age, and the surface is not wear-resistant and not beautiful. At present, for hardware products, nickel plating or chrome plating is generally used. The chemical properties of metal chromium and metal nickel are relatively stable, and they are easily passivated in the air, and then form an extremely thin passivation film on the surface of steel products, which can better resist external corrosion. The chrome plating process has a lot to do with the strength and corrosion resistance of the coating, especially the pretreatment process of chrome plating has a great influence on the chromium layer. Many chrome plating failures are due to inadequate pretreatment work, such as degreasing, wax removal, and oil removal. , activation is not in place...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/14C25D3/10C25D3/06C25D3/16C25D3/38C25D3/40C25D5/34C25D5/48
CPCC25D5/14C25D3/06C25D3/10C25D3/16C25D3/38C25D3/40C25D5/34C25D5/48
Inventor 吕云宇
Owner 苏州市美能五金镀饰有限公司
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