Method of Surface Treatment for Metal and Nonmetal Surfaces
a technology of metal and nonmetal surfaces, applied in the direction of electrophoretic coatings, superimposed coating processes, coatings, etc., can solve the problems of increased manufacturing costs, high equipment costs for processing waste solutions, pollution of the environment,
Inactive Publication Date: 2008-09-04
CHEN SHOU HUI
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- Abstract
- Description
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However, the chemical solution such as the strong acid solution may pollute the environment and equipment for processing the waste solution is very expensive.
As a result, the manufacturing cost is increased greatly.
Moreover, only the objects having a metal surface can be electroplated and this inevitably limits the applications.
In addition, the lacquer does not have good corrosion resistant property which is important in some circumstances.
The lacquer also lacks durability and luster thereof is difficult to maintain as time passes.
However, many processes are required, resulting in a further increase of the manufacturing cost.
Method used
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[0016]Referring to FIGS. 1 to 6, a process of surface treatment for metal or nonmetal object in accordance with of the invention is illustrated.
[0017]The process comprises the following steps:
[0018]In step 10, a plurality of objects (e.g., ones made of metal material) 11 are prepared after being washed. Note that the objects 11 may be made of nonmetal material in other embodiments.
[0019]In step 20, the objects 11 are positioned on a pole shaped structural member (e.g., metal or insulative one) 21.
[0020]In step 30, a thin coating (e.g., acrylic resin, epoxy resin, or nylon resin) 31 is coated on each object 11. The thin coating 31 is adapted to fill any small cavities on the surface of the object 11 so as to make the surface of the object 11 flat.
[0021]In step 40, the thin coating 31 is hardened by drying in room temperature or by heating in a temperature between about 70° C. and 180° C. for a time period between about 20 minutes and about 70 minutes.
[0022]In step 50, the objects 11 ...
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Abstract
A method of treating the surface of each of a plurality of objects comprising washing the objects; positioning the objects on each of a plurality of structural members; depositing a thin coating on each object; drying the thin coatings; placing the objects and the structural members on a tray in a heating chamber wherein an electric heating unit is disposed in the heating chamber for forming a first metal coat on the thin coating of each object and a second metal coat on each structural member by evaporation; placing the objects and the structural members in a tank filled with electro-coating solution such that after conducting the electro-coating solution positive or negative ions of the electro-coating solution are dissociated and move to the surfaces of the objects for depositing an outer layer thereon; and removing the objects from each structural member.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of my application Ser. No. 11 / 199,027 filed Aug. 8, 2005 for “Method of Surface Treatment for Metal and Nonmetal Surfaces”, now abandoned.BACKGROUND OF THE INVENTION[0002]1. Field of Invention[0003]The invention relates to surface treatment for metal or nonmetal materials and more particularly to a method of surface treatment involving steps of depositing a metal coat on a surface of metal or nonmetal object by evaporation and depositing an outer layer on the metal coat by electro-coating.[0004]2. Description of Related Art[0005]A conventional method for electroplating a metal layer on an object such as a drawer handle, a door handle, or a lock generally involves immersing an object to be treated in an electrolytic tank, employing a strong acid solution to remove foreign particles and dust from the surface of the object, electroplating a desired metal layer on the surface of the object, and coati...
Claims
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IPC IPC(8): C23C28/00
CPCC23C28/00C25D13/22C25D13/04
Inventor CHEN, SHOU-HUI
Owner CHEN SHOU HUI