Corrosion prevention production line for epoxy layer of outer surface of welding steel tube and corrosion prevention technology

A technology for welding steel pipes and outer surfaces, applied in the direction of pretreatment of the surface, device for coating liquid on the surface, coating, etc., to achieve a uniform effect on the surface of the layer

Inactive Publication Date: 2019-01-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this process layout has been used all the time, and almost all pipe factories in China adopt this method, how to further improve the test indicators such as cathodic peeling strength and prolong the service life of steel pipes cannot be realized by the existing process conditions

Method used

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  • Corrosion prevention production line for epoxy layer of outer surface of welding steel tube and corrosion prevention technology
  • Corrosion prevention production line for epoxy layer of outer surface of welding steel tube and corrosion prevention technology

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with specific embodiments.

[0027] like figure 1 The anti-corrosion production line for the epoxy layer on the outer surface of welded steel pipes shown is composed of an intermediate frequency preheating furnace 1, an outer wall rust remover 2, a dust treatment and dust removal device 3, a flame preheating furnace 4, and a phosphating reaction chamber 5. , Clean water cleaning room 6, air drying room 7, intermediate frequency heating furnace 8, epoxy spraying device 9, coating water cooling device 10, spark leak detection device 11. The production line is used to carry out the anti-corrosion process of the epoxy layer on the outer surface of the welded steel pipe. The specific steps are:

[0028] (1) Preheating: the welded steel pipe is preheated through the intermediate frequency preheating furnace 1, and the grease on the surface of the steel pipe is burned at the same time;

[0029] (2...

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Abstract

The invention discloses a corrosion prevention production line for an epoxy layer of the outer surface of a welding steel tube and a corrosion prevention technology. The corrosion prevention production line is composed of a medium frequency preheating furnace, an outer wall derusting machine, a tiny dust treatment and dedusting device, a flame preheating furnace, a phosphorization reaction chamber, a clean water cleaning chamber, an air drying chamber, a medium frequency heating furnace, an epoxy spraying device, a coating water cooling device and a spark leak detection device which are sequentially arranged. According to the corrosion prevention production line, an anticorrosion layer produced by the production line is excellent in quality, and the service life of the steel tube is long.

Description

Technical field: [0001] The invention relates to the technical field of welded steel pipe manufacturing, in particular to an anticorrosion production line and an anticorrosion process for continuously producing an epoxy layer on the outer surface of welded steel pipes. Background technique: [0002] Most of the existing steel pipe epoxy layer anti-corrosion production lines use intermediate frequency preheating, shot blasting, rust removal and micro-dust treatment to carry out pretreatment before coating, so as to achieve the anchor pattern depth and cleanliness level of the steel pipe surface before coating, thereby ensuring that the steel pipe The quality of the anti-corrosion layer. Although this process layout has been used, and almost all pipe factories in China adopt this method, how to further improve the test indicators such as cathodic peeling strength and prolong the service life of steel pipes cannot be realized by the existing process conditions. [0003] The pu...

Claims

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Application Information

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IPC IPC(8): B05D1/06B05D1/12B05D3/00B05D3/02B05D3/04B05D3/10
CPCB05D1/06B05D1/12B05D3/002B05D3/007B05D3/0218B05D3/0413B05D3/102
Inventor 王一岑马星赵勇祝少华郑武斌符利兵刘新成库宏刚焦炜王岁喜蔡宇琛王旭鹏李博峰张君宋红兵赵西岐任勇峰王涛施宜君侯永利
Owner BC P INC CHINA NAT PETROLEUM CORP
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