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Composite anticorrosion coating process based on stainless steel material

A technology of anti-corrosion coating and stainless steel, which is applied in coatings, devices for coating liquid on the surface, and pretreatment of surfaces, etc. It can solve problems such as harsh environmental conditions, unfavorable energy-saving rings, and poor coating effects, so as to reduce operating costs , save resources and ensure safety

Inactive Publication Date: 2018-06-22
SHANGHAI HILONG ANTI CORROSION TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, manual coating contains organic solvents, the coating effect is poor, and requires harsh environmental conditions; the automatic coating process of molten epoxy powder contains a high-temperature medium-frequency heating stage, which consumes a lot of power, which is not conducive to energy saving and environmental protection.

Method used

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  • Composite anticorrosion coating process based on stainless steel material

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Effect test

Embodiment 1

[0023] Composite anti-corrosion coating process based on stainless steel It includes the following steps:

[0024] (1) The steel pipe after the surface purification treatment is transported from the pipe inlet platform to the derusting machine for fully enclosed surface sandblasting and derusting. The double shot blasting process is adopted. The abrasive material of the first sandblasting machine is stainless steel shot and The weight ratio of stainless steel grit is 1:2 as the shot blasting material. The second sandblasting machine abrasive chooses stainless steel grit as the shot blasting material. Turn on the shot blasting equipment and air compressor. The surface of the pipe body, so that the surface of the pipe body reaches a certain roughness, and the shot blasting process is completed; after the shot blasting, the quality inspection is carried out to make the final sandblasting rust removal standard reach Sa3 level, and the depth of the anchor pattern is 60-100μm, the pe...

Embodiment 2

[0029] Composite anti-corrosion coating process based on stainless steel It includes the following steps:

[0030] (1) The steel pipe after the surface purification treatment is transported from the pipe inlet platform to the derusting machine for fully enclosed surface sandblasting and derusting. The double shot blasting process is adopted. The abrasive material of the first sandblasting machine is stainless steel shot and The weight ratio of stainless steel grit is 1:1 as the shot blasting material. The second sandblasting machine abrasive chooses stainless steel grit as the shot blasting material. Turn on the shot blasting equipment and air compressor. The surface of the pipe body, so that the surface of the pipe body reaches a certain roughness, and the shot blasting derusting process is completed; after the shot blasting, the quality inspection is carried out to make the final sandblasting derusting standard reach Sa3 level, the depth of the anchor pattern is 60 µm, and th...

Embodiment 3

[0035] Composite anti-corrosion coating process based on stainless steel It includes the following steps:

[0036] (1) The steel pipe after the surface purification treatment is transported from the pipe inlet platform to the derusting machine for fully enclosed surface sandblasting and derusting. The double shot blasting process is adopted. The abrasive material of the first sandblasting machine is stainless steel shot and The weight ratio of stainless steel grit is 1:3 as the shot blasting material. The second sandblasting machine abrasive chooses stainless steel grit as the shot blasting material. Turn on the shot blasting equipment and air compressor, and the shot blasting material is thrown to the tube by centrifugal force. The surface of the pipe body, so that the surface of the pipe body reaches a certain roughness, and the shot blasting derusting process is completed; after the shot blasting, the quality inspection is carried out to make the final sandblasting derusting...

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Abstract

The invention discloses a composite anticorrosion coating process based on a stainless steel material. The composite anticorrosion coating process comprises the following steps that a steel pipe subjected to surface purification treatment is conveyed into a rust removal machine through a pipe feeding platform to be subjected to totally-closed surface sand blasting rust removal, and a dual shot blasting and sand blasting process is adopted; high-pressure deionized water or reverse osmosis water is adopted for carrying out 100% surface flushing polarization on the surface of the steel pipe subjected to sand blasting, and an air knife is used for blow-drying; and the cleaned steel pipe is conveyed to a powder electrostatic spraying device to be sequentially coated with an epoxy resin FBE layer, a polypropylene adhesive AD layer and a polypropylene PP layer and finally is washed with water and cooled. According to the composite anticorrosion coating process, the anticorrosion aim of the stainless steel pipe in a conveying pipeline is achieved, and the service life of the pipeline is prolonged.

Description

technical field [0001] The invention relates to steel structure surface anticorrosion, in particular to a composite anticorrosion coating process based on stainless steel. Background technique [0002] In recent years, with the rapid development of my country's national economy, more and more large-scale steel pipes are used in port terminals, marine engineering and municipal engineering. In order to effectively control the corrosion of large steel pipes, prolong the service life of large steel pipes, and ensure the safe operation of infrastructure, it is necessary to carry out surface anticorrosion treatment on steel pipes. The most commonly used anti-corrosion treatment method is to apply anti-corrosion coatings on the surface of steel pipes, such as manual coating, automatic coating with molten epoxy powder, etc. Among them, manual coating contains organic solvents, the coating effect is poor, and requires harsh environmental conditions; the automatic coating process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/00B05D3/12B05D3/10B05D3/00
CPCB05D3/007B05D3/102B05D3/12B05D7/14B05D7/58B05D2202/10B05D2254/02B05D2401/32B05D2451/00B05D2504/00B05D2507/02B05D2420/01B05D2425/03B05D2420/02B05D2425/02B05D2420/03B05D2425/01
Inventor 谢挺廖青云李云祥
Owner SHANGHAI HILONG ANTI CORROSION TECH ENG
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