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Method for spraying protecting layer on metal surface

A technology of metal surface and protective layer, which is applied in the direction of surface coating liquid device, coating, pretreatment surface, etc., to achieve the effect of improving yield rate, good corrosion resistance and low defective rate

Inactive Publication Date: 2015-06-03
QINGDAO SHUNDE PLASTIC MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for spraying a protective layer on a metal surface. The technical problem to be solved is to overcome the low requirements of the technology in the prior art for the surface pretreatment of hardware materials, and to effectively improve the rate of good products sprayed on hardware. Make the surface of the hardware more decorative, the production method is simple, the manufacturing cost is low, the consumption of metal resources is protected, and the comprehensive utilization of resources is realized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for spraying a protective layer on a metal surface, comprising the steps of:

[0018] (1) Mixing of raw materials: 15 parts by weight of o-phthalic unsaturated polyester resin, 25 parts of styrene, 5 parts of matte UV oil with a particle size of 15-25um, 8 parts of nylon fiber, and 12 parts of wollastonite , 2 parts of tert-butyl benzoate and 1 part of benzoyl peroxide are mixed evenly.

[0019] (2) Metal pretreatment: Clean the metal in an ultrasonic generator with dewaxing water for 3 minutes, soak it in hot pure water after cleaning it, and let it dry;

[0020] (3) Coating curing: the liquid coating is injected into the mold with a high-pressure automatic spray gun to control the vacuum degree to -0.06 Pa, and the mold is heated and kept at 165°C for curing under pressure;

[0021] (4) Spraying: The hardware surface that is evenly sprayed with paint is carried out at 90°C;

[0022] (5) Drying: Put the coated metal into an oven, control the temperature at 7...

Embodiment 2

[0024] A method for spraying a protective layer on a metal surface, comprising the steps of:

[0025] (1) Mixing of raw materials: 18 parts by weight of isophthalic unsaturated polyester resin, 25 parts of styrene, 6 parts of matte UV oil with a particle size of 15-25um, 10 parts of nylon fiber, and 15 parts of wollastonite , 4 parts of tert-butyl benzoate and 2 parts of benzoyl peroxide are mixed evenly.

[0026] (2) Metal pretreatment: Clean the metal in an ultrasonic generator with dewaxing water for 3 minutes, soak it in hot pure water after cleaning it, and let it dry;

[0027] (3) Coating curing: the liquid coating is injected into the mold with a high-pressure automatic spray gun to control the vacuum degree to -0.06 Pa, and the mold is heated and kept at 165°C for curing under pressure;

[0028] (4) Spraying: The hardware surface that is evenly sprayed with paint is carried out at 90°C;

[0029] (5) Drying: put the coated metal into an oven, control the temperature a...

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Abstract

The invention discloses a method for spraying a protecting layer on the metal surface. The method is characterized by comprising the steps of (1) mixing raw materials; (2) preprocessing metal; (3) solidifying the coating; (4) spraying; (5) drying. According to the method, the metal material is preprocessed; matt powder can increase the shielding capacity of a film layer as well as improving the yield of the product; meanwhile, the product is high in corrosion resistance, wearing resistance and scratch resistance; therefore, the metal surface is high in decoration performance; the production method is simple; the manufacturing cost is low; mass production is easily carried out; the defective percentage is low; the consumption of metal resources is reduced; the comprehensive utilization of the resource is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a method for spraying a protective layer on a metal surface. Background technique [0002] According to the cause of metal corrosion, appropriate methods are adopted to prevent metal corrosion. The commonly used methods are: covering the metal surface with a protective layer to isolate the metal product from the surrounding corrosive medium, thereby preventing corrosion. Such as: coating machine oil, petroleum jelly, paint or covering enamel, plastic and other corrosion-resistant non-metallic materials on the surface of steel parts. By means of electroplating, hot-dip plating, spray plating, etc., a layer of metal that is not easy to be corroded, such as zinc, tin, chromium, nickel, etc., is plated on the steel surface. These metals often form a dense oxide film due to oxidation, thereby preventing water and air from corroding steel. A fine and stabl...

Claims

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Application Information

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IPC IPC(8): B05D7/04B05D3/02
Inventor 修相鹏
Owner QINGDAO SHUNDE PLASTIC MACHINERY CO LTD
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