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

A composite coating and metal surface technology, which is applied to the surface coating liquid device, special surface, metal material coating process, etc., can solve the problem of large amount of metal consumption, high VOC emission, anti-corrosion effect and surface gloss In order to achieve the effect of small metal consumption, hard and smooth surface, and excellent appearance

Inactive Publication Date: 2012-10-31
NINGBO RUNNER INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water electroplating process has the following recognized disadvantages: (1) It consumes a lot of water and energy, and produces a lot of waste water
(3) Emission of toxic waste gas
(4) Large amount of metal consumption
[0003] Chinese patent CN1468976 discloses a surface treatment method suitable for metals and non-metals. It is mainly because the existing surface treatment method has serious environmental pollution, and its anti-corrosion effect and surface gloss are poor after treatment. It is a fixed frame that can be used for positioning items. The items are positioned on the fixed bracket. First, a base film is placed on the surface of the item, and then a metal plating layer is formed by vacuum electroplating. Highly corrosive, wear-resistant and glossy acrylic layer, which can effectively improve the problems existing in common surface treatment methods
[0004] 1) Need to spray primer, topcoat and PVD coating, the process is complicated
[0005] 2) The yield rate of the primer is not high
[0006] 3) Need to spray primer and topcoat, high VOC emissions, not environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 An example of a chrome-plated bathroom fitting with a copper handle

[0019] 1) Pass the copper handle blank through an automatic polishing machine (rough polishing - fine polishing - fine polishing) to obtain a bright surface.

[0020] 2) Put it into a hydrocarbon cleaning machine for processing, and dry (80°C, 30min).

[0021] 3) Transfer the cleaned bright copper handle blank into the PVD furnace, and plate a layer of 0.2μm metal chromium film (deposited by arc ion plating method: chromium target current 80A, bias voltage 70V, 30SCCM Ar 2 , vacuum pressure 0.2Pa, coating time 2min).

[0022] 4) Electrophoretic coating is carried out on the copper handle coated with metal Cr film, the organic film thickness is controlled at about 25um, and the curing temperature is 140 degrees Celsius for 20 minutes.

[0023] The products obtained by this process have a high-gloss surface like a mirror, and can pass the following functional tests:

[0024] (A) CASS ant...

Embodiment 2

[0031] Embodiment 2 An example of gold-plated accessories for an aluminum alloy lock cover

[0032] 1) Pass the aluminum alloy lock cover blank through an automatic polishing machine (rough polishing - fine polishing - fine polishing) to obtain a bright surface.

[0033] 2) Put it into a hydrocarbon cleaning machine for processing, and dry (80°C, 30min).

[0034] 3) Transfer the cleaned bright aluminum alloy lock cover blank into a PVD furnace, and coat a layer of 0.3μm metal zirconium nitride film (deposited by arc ion plating method: titanium target current 100A, bias voltage 70V, and 100SCCMAr 2 , 300SCCMN 2 Vacuum pressure 0.5Pa, coating time 4min).

[0035] 4) The aluminum alloy lock cover coated with metal titanium nitride film is powder coated, the thickness of the organic film is controlled at about 50um, and the curing temperature is 170 degrees Celsius for 20 minutes.

[0036] The products obtained by this process have a high-gloss surface like a mirror, and can p...

Embodiment 3

[0044] Embodiment 3 An example of the nickel-plated color of a tuyere of an iron piece

[0045] 1) Pass the blank of the tuyere of the iron piece through the automatic polishing machine (rough polishing - fine polishing - fine polishing) to obtain a bright surface.

[0046] 2) Put it into a hydrocarbon cleaning machine for processing, and dry (80°C, 30min).

[0047] 3) Transfer the cleaned bright iron tuyere blank into a PVD furnace, and coat a layer of 0.6μm metal zirconium nitride film (deposited by arc ion plating method: zirconium target current 110A, bias voltage 70V, 100SCCM Ar 2 , 100SCCM N 2 Vacuum pressure 0.5Pa, coating time 4min).

[0048] 4) The aluminum alloy lock cover coated with metal zirconium nitride film is subjected to electrophoretic coating, the thickness of the organic film is controlled at about 30um, and the curing temperature is 160 degrees Celsius for 30 minutes.

[0049] The products obtained by this process have a high-gloss surface like a mirro...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16B05D5/06
Inventor 王应泉王飞吴子豹李明仁
Owner NINGBO RUNNER INDAL CORP
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