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Method for spraying anticorrosive paint on outer surface of ship seawater pipeline

A technology for anti-corrosion coatings and seawater pipes, which is applied to the device for coating liquid on the surface, special surfaces, pre-treated surfaces, etc., which can solve the problems of shortening the service life of the coating, discontinuity of the surface, and aggravating coating damage, etc., to achieve uniformity Good effect of sex and dispersibility

Active Publication Date: 2021-03-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of seawater corrosion, microcracks are often hidden inside the coating
Once defects occur inside the coating, discontinuities will occur on the surface, which will aggravate the damage of the coating and greatly shorten the service life of the coating

Method used

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  • Method for spraying anticorrosive paint on outer surface of ship seawater pipeline
  • Method for spraying anticorrosive paint on outer surface of ship seawater pipeline
  • Method for spraying anticorrosive paint on outer surface of ship seawater pipeline

Examples

Experimental program
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Effect test

Embodiment 1

[0044] First melt the anticorrosion coating powder into a liquid, and then spray it to the inner surface of the seawater pipeline; the anticorrosion coating powder is obtained by mixing epoxy resin coating and self-repairing microcapsules; the epoxy resin coating and self-repairing The weight ratio of the microcapsules is 100:3; the self-healing microcapsules include a core material and a wall material wrapping the core material, the core material is tung oil, and the wall material is sodium alginate solution and calcium chloride Calcium alginate, the reaction product of the solution, is mixed with sodium alginate solution, tung oil and OP-10, then placed in a tissue grinder and stirred at a speed of 6000r / min for 5 minutes to form oil-in-water emulsion droplets, which are obtained after standing still for defoaming Emulsion; drip the emulsion into the calcium chloride solution under a pressure of 0.43MPa, filter the microcapsules through a 400-mesh paper funnel, rinse off the ...

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Abstract

The invention provides a method for spraying anticorrosive paint on the outer surface of a ship seawater pipeline. Spraying equipment is provided and comprises a paint liquefying device, a high-pressure pump, a plurality of parallel tracks, walking devices, a circular hose support and a hose; the tracks are parallel to the axis of a to-be-sprayed pipeline and located outside the hose support, thewalking devices on one or more tracks are connected with the hose support through connecting rods, the walking devices on the other tracks are provided with laser curing devices, and one end of the hose is connected to an outlet of the high-pressure pump; and the middle of the hose penetrates through a through hole of a connecting block fixedly connected to the bottom of the track, the other end of the hose penetrates through a through hole of the hose support and surrounds the inner ring face of the hose support by a lap, a threaded hole is formed in the wall of the hose located on the innerring face of the hose support, a funnel-shaped spraying nozzle is connected in the threaded hole, and threads are arranged on the outer surface of a round pipe at the lower end of the spraying nozzle.The coating flowing phenomenon caused by non-uniform coating is avoided, so that the purpose of optimizing the spraying effect is achieved.

Description

technical field [0001] The invention belongs to the field of coatings and coating equipment, and in particular relates to a method for spraying anti-corrosion coatings on the outer surface of naval seawater pipelines. Background technique [0002] Coatings with anti-corrosion, waterproof and protective functions are very necessary materials in engineering construction. Especially for the protection of pipelines such as underground, road and bridge, tunnel engineering, and ship seawater pipelines, a protective layer needs to be coated and it is hoped that it will be cured soon. [0003] At present, the construction methods of coatings include various methods such as brush coating, spray coating, roller coating and curtain coating. The brushing method is the most widely used brushing method in construction at present. It is simple in construction and easy to operate, but it requires pure manual operation during construction, which is labor-intensive, does great harm to worker...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D7/14B05D5/00B05B16/20B05D3/06B05B9/04
CPCB05D7/24B05D7/146B05D5/00B05B16/20B05D3/06B05B9/0423B05D2504/00B05D2602/00
Inventor 孙霁宇李雯湛玉超田丽梅赵杰
Owner JILIN UNIV
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