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Surface treating technique of zinc alloy handle

A surface treatment and zinc alloy technology, which is applied in the direction of pretreatment surface, device for coating liquid on the surface, furniture accessories, etc., can solve problems such as rust, workpiece or appliance lose color, reduce product surface finish, etc. Simple, low processing cost, beautiful and generous effect

Inactive Publication Date: 2008-09-03
YUHUAN CHAODAI FURNITURE FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the products made by the above method, because the surface layer is still a metal layer, are easily combined with oxygen in the atmosphere to form an oxide film when exposed to the air, or rust in a humid atmosphere, such as forming a patina, which will cause the workpiece or utensils to lose their color. Reduce the smoothness of the product surface and affect the value of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The surface treatment process of this zinc alloy handle is as follows:

[0029] A. Brass plating: use electroplating technology to evenly plate a layer of brass on the surface of the zinc alloy handle;

[0030] The zinc alloy handle is placed in the copper sulfate plating solution, the anode of the direct current is located in the copper sulfate plating solution, and the cathode is in contact with the handle. The sulfuric acid copper plating solution is composed of copper sulfate, sulfuric acid and water, the current density is 4 amps / square meter, the temperature of the electroplating solution is 25° C., and the time is 45 minutes.

[0031] Obviously, under the action of direct current, the copper sulfate plating solution undergoes an electrolytic reaction, so that a uniform brass layer is deposited on the surface of the handle.

[0032] After the zinc alloy handle is electroplated, the brass-plated handle is polished. Specifically, first put the brass-plated handle ...

Embodiment 2

[0043] In this embodiment, the drying in step B is to dry the painted handle in a drying chamber at 80° C., and the drying time is 25 minutes.

Embodiment 3

[0045]In this embodiment, the passivation time of the liquid medicine in step D is 1 minute, and the drying temperature after step D is 130° C., and the drying time is 35 minutes.

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Abstract

The invention provides a surface treatment process for Zn alloy handles and solves the problems of the prior art, such as rust formation, poor color of work pieces or instruments and rough surface of products. The method includes the following steps: brass plating step: uniformly plating a brass coating on the surface of the Zn alloy handle by electroplating process; paint spraying and drying steps: uniformly spraying paint on the surface of the brass-plated handle and oven-drying the paint on the surface of the handle; polishing and varnishing steps: polishing the surface of dried handle and uniformly spraying varnish paint on the surface thereof; passivation step: immersing the handle in a passivation liquid to passivate, the passivation liquid is a color paste obtained by diluting an acrylic paint with water. The surface treatment process for Zn alloy handles has the advantages of good effect of ancient imitations, beautiful appearance, simple operation and low treatment cost without paint stripping and color fading.

Description

technical field [0001] The invention relates to a surface treatment process of a metal piece, in particular to a surface treatment process of a zinc alloy handle. Background technique [0002] Most of the drawer handles on the market are made of aluminum alloy, but because of the difficulty and high cost of processing them into curves or complex products with various patterns, the aluminum alloy handles on the market are all straight. In practical application, it has great limitations and can only be used in some more modern products, and cannot meet the needs of some furniture with antique colors or more luxurious places. [0003] Zinc alloy is an excellent casting alloy, which is easy to process into workpieces with various curves, complex structures and high precision, so it has wide applicability. [0004] However, zinc alloys are not resistant to wear, and zinc alloys are directly exposed to the air, which is easily corroded by humid atmosphere. In order to overcome th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/10C25D3/38A47B95/02
Inventor 黄强
Owner YUHUAN CHAODAI FURNITURE FITTINGS
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