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Protection method of spraying metal for coating edge, corner and seam of steel component

A technology for steel components and metal spraying, which is applied to the protection of welding seam sprayed metal, and the fields of coating the edges and corners of steel components, to achieve the effects of good economic benefits, good practical value, and simple and easy process.

Inactive Publication Date: 2008-02-06
XUZHOU ZENITH COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for protecting the edges, corners and welds of painted steel components by spraying metal, so as to solve the problem of protecting the sides, corners and welds of painted steel components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After shot blasting the metal components of the grid, use compressed air to blow off the dust and impurities on the surface, and use a flame spray gun to spray zinc on the edges, corners, welds and surrounding areas of 5-20mm of the grid components. Thickness 10-30μm, then electrostatically spray epoxy polyester powder coating, cure at 180°C for 25min, cool to room temperature and pack into finished product. After the product is transported to the construction site and installed, the amount that needs to be repaired is only 5-8% of the normal amount. The salt spray test of the sample is 1000h, and there is no corrosion at the edges, corners, and welds. The overall anti-corrosion period of the grid frame can exceed 30 years. .

Embodiment 2

[0018] After shot blasting the corrugated beam plate components of the expressway, the dust and impurities on the surface are blown off with compressed air, and the corrugated beam plate is degreased, pickled and derusted, and phosphating at medium temperature in sequence, and the corrugated beam plate is treated with a flame spray gun. The corners and the surrounding areas of 5-10mm are sprayed with zinc, the thickness of the zinc layer is 5-20μm, and then the heavy-duty anti-corrosion powder coating is electrostatically sprayed, and the weather-resistant polyester powder coating is sprayed after semi-curing at 180°C, fully cured at 200°C for 10 minutes, and cooled After reaching room temperature, it is packaged into finished products. The anti-collision ability of the corners of this product is increased by 10-30 times, and the amount of repairs that need to be repaired after being transported to the construction site and installed is only 3-5% of the normal amount. After 200...

Embodiment 3

[0020] After shot blasting the corrugated beam plate components of the expressway, blow off the dust and impurities on the surface with compressed air, degrease the corrugated beam plate, pickle and derust, and phosphate at medium temperature in sequence, and use a supersonic arc spray gun to spray the corrugated beam The corners of the board and the surrounding area of ​​5-10mm are sprayed with stainless steel, the thickness of the stainless steel layer is 10-40μm, and then the heavy-duty anti-corrosion powder coating is electrostatically sprayed, and the reinforced polyester powder coating is sprayed after semi-curing at 180°C, and fully cured at 200°C for 10 minutes , cooled to room temperature and packaged into finished products. The anti-collision ability of the corners of this product is increased by 20-50 times, and the amount of repairs that need to be repaired after being transported to the construction site and installed is only 1-3% of the normal amount. After 2000 h...

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Abstract

The present invention discloses a protective method for metal spraying of edges, angles and welds of painted steel members. In the pre-treatment procedure of a painted steel member, an operation step of metal spraying is additionally performed on edges, angles and welds of the member after rust removal of the steel member surface by ball throwing or sand blasting, or after phosphorization or inactivation of the steel member surface, a metal coating 5-50 micrometers thick is produced on the member surface. The present invention has the advantage that the technology has simple operation, low spraying cost, prominent protective effect and excellent practical value.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of coated steel components. Specifically, the invention relates to a method for protecting the edges, angles and welding seams of painted steel components by spraying metal. Background technique [0002] Due to long-term exposure to the atmosphere, steel components undergo chemical and electrochemical reactions due to climate change, sun and rain, moisture contained in the atmosphere, and corrosive media, and the surface is rapidly oxidized, resulting in material performance degradation and even failure. [0003] Coating protection technology is often used by people, cost-effective, and has two categories: non-metal coating and metal coating. Non-metallic coatings include paint coatings, powder coatings, and inorganic material covering coatings. The shielding method is mainly used to block the contact between the corrosive medium and the steel component base material to achieve a protective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/00C23C4/04C23C4/02C23C4/06C23C4/08C23C4/129C23C4/131
Inventor 陆东方袁健
Owner XUZHOU ZENITH COATING
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