Method for carrying out full dry method composite film plating on metal surface

Abstract

The invention discloses a method for carrying out full dry method composite film plating on a metal surface, and relates to a treatment method of the metal surface. The invention provides a method for carrying out full dry method composite film plating on metal surface capable of obtaining a highly bright metal appearance through only a layer of PVD (Physical Vapor Deposition) plated metal film and finish without spraying a primer. The method comprises the following steps: mechanically polishing and cleaning a metal blank; plating a metal film on the cleaned metal blank; organically spraying the obtained sample and solidifying at high temperature to obtain a product. After test, the obtained metalized metal product has the advantages of antisepsis, corrosion resistance, weather resistance, temperature resistance and colorful property, the surface is hard and smooth, and is comparable to the quality of the conventional hydroelectric plating metal product, roughening, activating and washing processes in the conventional hydroelectric plating are removed, no any harmful electroplating liquid medicine is added, in particular, toxic hexavalent chromium and cyanide are not used, meanwhile, the process has less metal consumption and few waste gas, and is completely free of wastewater discharge and low in cost, and the method is suitable for bathroom, electronics, electrical appliance and automobile industries.

Description

technical field

[0001] The invention relates to a metal surface treatment method, in particular to a method for performing all-dry composite coating on the metal surface. Background technique

[0002] Traditional water (wet) electroplating on the metal surface can obtain products with high anti-corrosion, high wear resistance, high mirror surface and strong decoration. This kind of metal metallization (plating Cu / Ni / Cr metal film) is widely used and has become popular. Long. However, the water electroplating process has the following recognized disadvantages: (1) It consumes a lot of water and energy, and produces a large amount of wastewater. (2) Use harmful chemical plating solutions and additives. (3) Emission of toxic waste gas. (4) A large amount of metal is consumed. (5) Use of hexavalent chromium which is harmful to the human body. Obviously, this traditional craft is quite harmful to the environment and needs to be improved urgently. Over the years, many resear...