Epoxy coating on-site recoating method for steel pipeline

A technology of epoxy coating and epoxy coating, applied in epoxy coating, coating, device for coating liquid on the surface, etc., can solve the problem of epoxy coating peeling off and so on

Pending Publication Date: 2020-10-30
SHAANXI YUYANG PETROLEUM TECH ENG CO LTD
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the existing steel pipeline is used for a long time, the epoxy coating will be partially peeled off. Therefore, there is a need for a method for on-site repairing of the epoxy coating on the steel pipeline.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Epoxy coating on-site recoating method for steel pipeline
  • Epoxy coating on-site recoating method for steel pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 , in an embodiment provided by the present invention, a method for on-site repairing of epoxy coatings for steel pipelines, comprising the following specific steps: S100: Carry out visual inspection of the steel pipelines, and determine that the surface of the steel pipelines needs to be repaired position; S200: Clean up the oxide layer on the surface of the steel pipeline that needs to be recoated with epoxy coating; S300: Use a polishing machine to polish the surface of the steel pipeline that needs to be recoated with epoxy coating; S400: Put Quick-drying two-component solvent-free epoxy paint repairs the damaged surface of the epoxy coating. The quick-drying two-component solvent-free epoxy paint is used as a primer. After being fully stirred and matured, the damaged ring can be quickly repaired Oxygen coating, after the primer is cured, the topcoat coating of toughened modified resin is scraped on the surface of the primer coating to form a flexible mo...

Embodiment 2

[0027] see Figure 1-2 , in an embodiment provided by the present invention, a method for on-site repairing of epoxy coatings for steel pipelines, comprising the following specific steps: S100: Carry out visual inspection of the steel pipelines, and determine that the surface of the steel pipelines needs to be repaired position; S200: Clean up the oxide layer on the surface of the steel pipeline that needs to be recoated with epoxy coating; S300: Use a polishing machine to polish the surface of the steel pipeline that needs to be recoated with epoxy coating; S400: Put Quick-drying two-component solvent-free epoxy paint repairs the damaged surface of the epoxy coating. The quick-drying two-component solvent-free epoxy paint is used as a primer. After being fully stirred and matured, the damaged ring can be quickly repaired Oxygen coating, after the primer is cured, the topcoat coating of toughened modified resin is scraped on the surface of the primer coating to form a flexible...

Embodiment 3

[0032] see Figure 1-2 , in an embodiment provided by the present invention, a method for on-site repairing of epoxy coatings for steel pipelines, comprising the following specific steps: S100: Carry out visual inspection of the steel pipelines, and determine that the surface of the steel pipelines needs to be repaired position; S200: Clean up the oxide layer on the surface of the steel pipeline that needs to be recoated with epoxy coating; S300: Use a polishing machine to polish the surface of the steel pipeline that needs to be recoated with epoxy coating; S400: Put Quick-drying two-component solvent-free epoxy paint repairs the damaged surface of the epoxy coating. The quick-drying two-component solvent-free epoxy paint is used as a primer. After being fully stirred and matured, the damaged ring can be quickly repaired Oxygen coating, after the primer is cured, the topcoat coating of toughened modified resin is scraped on the surface of the primer coating to form a flexible...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The embodiment of the invention relates to the field of steel pipeline surface treatment, and particularly discloses an epoxy coating on-site recoating method for a steel pipeline. The method comprises the following specific steps of 100, performing appearance inspection on the steel pipeline, and determining the position of the surface needing to be recoated of the steel pipeline; 200, removing an oxide layer on the surface of the position needing to be recoated with an epoxy coating on the steel pipeline; 300, polishing the surface needing to be recoated with the epoxy coating by using a polishing machine; 400, repairing a damaged point of the epoxy coating by using a quick-drying bi-component solvent-free epoxy coating, taking the quick-drying bi-component solvent-free epoxy coating asa primer, sufficiently stirring and curing for later use, rapidly repairing the damaged epoxy coating, and after the primer is cured, scraping a finishing coating of a toughening modified resin onto the surface of a primer coating to form the flexible modified finishing coating; and 500, performing process inspection on the steel pipeline subjected to recoating, and storing the pipeline qualifiedfor inspection. According to the epoxy coating on-site recoating method for the steel pipeline , the surface of the steel pipeline can be conveniently recoated with the epoxy coating on site, and theuse is convenient.

Description

technical field [0001] The invention relates to the field of surface treatment of steel pipelines, in particular to an on-site repair method for epoxy coatings of steel pipelines. Background technique [0002] Steel pipelines are important passages in the production and operation of petroleum, chemical production, petroleum gathering and transportation, and water supply and gas supply systems. They have a wide range of applications and are used in a large amount. In order to improve the anti-corrosion performance of steel pipelines and prolong the service life of pipelines, it is usually necessary to treat the inner and outer surfaces of multiple pipelines and coat them with anti-corrosion layers. At present, there are various coating methods for steel pipe anti-corrosion coatings used on site. Among them, epoxy powder-coated steel pipes are getting more and more attention because of their excellent mechanical properties, acid and alkali resistance, corrosion resistance, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D3/00B05D7/14B05D7/16B05D1/38B05D7/22C09D163/04C09D183/04C09D7/61
CPCB05D5/005B05D3/002B05D7/146B05D7/16B05D7/544B05D7/546B05D3/007B05D7/225C09D163/04C09D7/61B05D2202/15C09D183/04C08K3/042
Inventor 杨敏石硕巨帅于海涛鲁培平宋彦玲
Owner SHAANXI YUYANG PETROLEUM TECH ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap