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Hexavalent-chromium appearance imitated anti-corrosion membrane plating method

A hexavalent chromium, imitation electroplating technology, applied in chemical instruments and methods, sputtering plating, ion implantation plating, etc. High corrosion resistance and weather resistance, the effect of high weather resistance

Inactive Publication Date: 2012-01-25
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aluminum is soft and easy to wear, and it is resistant to alkali, CO 2 And water, etc. are not corrosion-resistant. Although there is topcoat protection, due to the spraying method, there will be some dead corners and the interior cannot be sprayed to the topcoat, which will become corrosion points and continue to spread, resulting in the failure of the entire product.
[0004] For sanitary products, which are in constant contact with water, they have higher requirements for water immersion resistance, chemical corrosion resistance, and salt spray resistance. At present, no one has reported that the color of hexavalent chromium can be obtained by tinting paint on aluminum color, and it is not easy to achieve the excellent anti-corrosion performance of water electroplating.

Method used

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  • Hexavalent-chromium appearance imitated anti-corrosion membrane plating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 A bright chrome (hexavalent chromium color) for an ABS shower head, see the structural diagram figure 1 .

[0023] Step 1: After the blank 1 obtained by ABS injection molding is wiped with a dry cloth, the hanging product is subjected to flame treatment and electrostatic dust removal through an automatic flame processor and an electrostatic precipitator, and the processing time is 6 seconds.

[0024] Step 2: Then spray a layer of UV paint 2 with a thickness of 25 μm. The paint layer 2 is baked with an IR lamp (60°C×5min), and then cured with a UV lamp (1100J / m 2 ).

[0025] Step 3: Transfer the photocured plastic parts into the PVD furnace for plasma gas activation (conditions are DC bias voltage 3000V, vacuum pressure in the furnace 1Pa, working gas equal ratio of Ar and O at 50SCCM:50SCCM 2 Mixed air flow, activation time is 1min); then 40 nanometers thick aluminum layer 3 is evaporated and plated on the paint surface (the conditions of the aluminum coati...

Embodiment 2

[0034] Embodiment 2 A kind of PC material photo frame bright chrome (hexavalent chromium color), structure diagram sees figure 1 .

[0035] Step 1: After wiping the blank 1 obtained by PC injection molding with a dry cloth, the hanging product is subjected to flame treatment and electrostatic dust removal through an automatic flame processor and an electrostatic precipitator, and the processing time is 6 seconds.

[0036] Step 2: Then spray a layer of UV paint 2 with a thickness of 22 μm. The paint layer 2 is baked with an IR lamp (60°C×5min), and then cured with a UV lamp (1100J / m 2 ).

[0037] Step 3: Transfer the photocured plastic parts into the PVD furnace for plasma gas activation (conditions are DC bias voltage 3000V, vacuum pressure in the furnace 1Pa, working gas equal ratio of Ar and O at 50SCCM:50SCCM 2 Mixed air flow, activation time is 1min); then 40 nanometers thick aluminum layer 3 is evaporated and plated on the paint surface (the conditions of the aluminum ...

Embodiment 3

[0046] Example 3 An example of high-gloss hexavalent chromium at the tuyere of an iron piece, see the structure diagram figure 1

[0047] Step 1: Wipe the tuyere piece 1 punched by the iron piece with a dry cloth first, then perform flame treatment and then electrostatic dust removal, and the flame treatment time is 2 minutes.

[0048] Step 2: Then spray a layer of UV paint 2 with a thickness of 30 μm. The paint layer is heated and leveled by infrared lamps (60℃×5min), and then cured by ultraviolet lamps (1100J / m2 ).

[0049] Step 3: Transfer the primer-sprayed blank into a PVD furnace for plasma gas activation (conditions are DC bias voltage 3000V, furnace vacuum pressure 1Pa, working gas equal ratio of 50SCCM: 50SCCM Ar and O 2 Mixed air flow, activation time is 1min); then 40 nanometers thick aluminum layer 3 is evaporated and plated on the paint surface (the conditions of the aluminum coating layer are evaporation preheating voltage 3.5V for 30s, pre-melting 4.5V for 10s...

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Abstract

The invention discloses a hexavalent-chromium appearance imitated anti-corrosion membrane-plating method and relates to metallic and non-metallic surface membrane plating. The invention aims to provide a hexavalent-chromium appearance imitated anti-corrosion membrane-plating method which is characterized in that the function and quality of an obtained product are good, no water is required to be used in the whole process flow, and compared with the existing membrane plating by using a dry method, the method is more environmentally-friendly and more superior in performance. The method comprises the following steps: cleaning by using a dry method; carrying out ultraviolet curing on a prime coat; carrying out evaporation coating on a metal aluminum membrane; carrying out evaporation coating on a polymer membrane; and carrying out ultraviolet curing on a surface coat. The aluminum membrane is isolated from the outside by using a silica membrane so as to form a totally-closed structure, then through carrying out color-matching by using a finishing paint, a high-corrosion-resistant plated membrane with an imitated appearance of hexavalent chromium is obtained, so that the method disclosed by the invention replaces the traditional water electroplating process. A product prepared by using the method disclosed by the invention is high in corrosion resistance and weather resistance, andmore approximate to the appearance and high performances of the traditional water-electroplated hexavalent chromium.

Description

technical field [0001] The invention relates to a metal and non-metal surface coating, in particular to a high corrosion-resistant coating method imitating the appearance of electroplating hexavalent chromium. Background technique [0002] Decorative and functional coatings on metal and non-metal surfaces are widely used in various industries. Among them, hydroelectroplating is an important surface treatment technology. Its coating has beautiful metallic luster, good physical properties and stable chemical properties, so it is liked by people. However, hydroplating will generate a lot of sewage and the process is complicated. [0003] In order to solve the problem of hydroelectric chrome plating, people have done a lot of research. Among them, the method of vacuum coating is more representative of the water electroplating process. It uses paint to obtain a high-gloss surface, and then uses evaporation coating and sputtering under vacuum conditions. Coating, ion coating and ...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B15/04B32B15/20B32B33/00C23C14/14C23C14/12
Inventor 吴子豹张宇霆李明仁
Owner XIAMEN RUNNER IND CORP
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