Silver plating process on workpiece surface

A workpiece surface and workpiece technology, which is applied in the field of silver plating on the workpiece surface, can solve the problems of poor weather resistance and scratch resistance, high cost, complicated process flow, etc., achieve good weather resistance and scratch resistance, and reduce process costs Effect

Inactive Publication Date: 2011-07-20
阮志达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some spraying silver plating processes were developed to replace the electroplating process in the later stage, due to the problems of complicated process, high cost, poor weather resistance and scratch resistance, it is still impossible to obtain better technical results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: a kind of metal workpiece surface silver plating process, its technical process is as follows:

[0022] (1) The surface pretreatment of the workpiece, that is, the use of ultrasonic high-pressure cleaning technology to remove dust and oil on the surface of the workpiece, and because silver is relatively stable in the general atmosphere, but in the air containing oxides and sulfides, silver Coated surfaces can quickly tarnish and quickly lose their ability to reflect light. Therefore, it is also necessary to remove oxides, that is, metal surface rust;

[0023] (2) To make the bottom layer of the protective film of the workpiece to be silver-plated, the steel and metal components must be plated with other metal or alloy layers (such as cadmium, brass, bronze, etc.) that can prevent the metal from being corroded. Parts in contact with rubber (containing sulfur) should not be plated with silver. If a high degree of gloss is required, the part must be finely ...

Embodiment 2

[0027] Embodiment 2: a kind of surface silver plating process of polyvinyl chloride (PVC) object, its technological process is as follows:

[0028] (1) Pretreatment of the surface of the workpiece, that is, using ultrasonic high-pressure cleaning technology to remove dust and oil on the surface of the workpiece, and remove oxides, that is, rust on the metal surface;

[0029] (2) Make the bottom layer of the protective film of the workpiece to be silver-plated, that is, use a spray gun to spray the world's advanced nano-scale polyurethane (PU) and silicon-fluorine nano-scale coating on the surface of the workpiece to form a thickness of 5-15mm on the surface of the workpiece. Micron bottom surface protective film layer, this bottom surface protective film layer is also used as an intermediate to facilitate the silver plating process on the workpiece. In this technical solution, the spray gun with better spray effect of Japan's three K type is generally used for spraying;

[003...

Embodiment 3

[0033] Embodiment 3: a kind of leather surface silver plating process, its technological process is as follows:

[0034] (1) Pretreatment of the surface of the workpiece, that is, using ultrasonic high-pressure cleaning technology to remove dust and oil on the surface of the workpiece, and remove oxides, that is, rust on the metal surface;

[0035] (2) Make the bottom layer of the protective film of the workpiece to be silver-plated, that is, use a spray gun to spray the world's advanced nano-scale polyurethane (PU) and silicon-fluorine nano-scale coating on the surface of the workpiece to form a thickness of 5-15mm on the surface of the workpiece. Micron bottom surface protective film layer, this bottom surface protective film layer is also used as an intermediate to facilitate the silver plating process on the workpiece. In this technical solution, the spray gun with better spray effect of Japan's three K type is generally used for spraying;

[0036] (3), carry out silver pl...

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Abstract

The invention relates to a workpiece surface treatment technology, and especially a silver plating process on a workpiece surface which has the advantages of simple process flow, low cost, good weatherability, scraping resistance, and environmental protection. Using a spray gun with good spraying effect, nanometer polyurethane (PU) or nanometer polyurethane (PU) with silicon and fluorine nanometer coatings is sprayed on the bottom and the outer layer of a workpiece to be silvered so as to form a protective film layer of a silver plating layer, and the silver plating layer is formed on the base of the bottom protective film layer by simultaneously spraying a silver salt solution and a reductant solution from the two pores of a diplopore spray gun respectively; therefore, the workpiece surface is provided with a metal texture. In addition, color paste can be mixed into the polyurethane (PU) or nanometer polyurethane (PU) with silicon and fluorine nanometer coatings of the surface protective film layer so as to form a modern creative color.

Description

technical field [0001] The invention relates to a workpiece surface treatment technology, in particular to a silver-plating process on the surface of a workpiece with simple process flow, low cost and environmental protection, and the prepared silver-plated workpiece has excellent weather resistance and scratch resistance. Background technique [0002] Silver has a beautiful silvery-white luster and is often used for decorative purposes. Silver coating is mainly used in the instrumentation industry, light industrial products, lamps, reflectors, searchlights and other items that require protective decorative electroplating and reflective coatings. The traditional surface silver plating process is cyanide silver plating. The cyanide silver plating solution is stable and reliable, with high current efficiency, good dispersion and covering ability, and the grains of the coating are relatively fine, but the solution contains highly toxic cyanide. Chemicals and other harmful wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/18C23C18/44B05D5/06
Inventor 阮志达
Owner 阮志达
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