Seamless pipe with anticorrosive layer

A technology of seamless pipe and anti-corrosion layer, applied in the field of steel pipe, can solve the problems of poor dispersion and easy settlement of nano-silica, and achieve the effect of improving failure resistance, low cost and good uniformity

Inactive Publication Date: 2013-05-01
张芝莲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion of fillers such as nano-silica used is not good, and it is easy to settle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of steel pipe main body:

[0030] The solid tube is inspected and the surface defects are removed, cut into the required length, centered on the perforated end of the tube, then sent to the heating furnace to be heated, and pierced on the piercing machine; while piercing, it continuously rotates and advances, and the roller and Under the action of the plug, a cavity is gradually formed inside the billet, and then sent to the automatic rolling mill to continue rolling; finally the wall thickness is uniformed by the equalizer, and the diameter is sizing by the sizing machine to meet the specification requirements;

[0031] 2) Preparation of anticorrosive and wear resistant coatings:

[0032] (A) Add polyether glycol with a molecular weight of 3000, castor oil, and organoclay to the reaction kettle and mix, stir and raise the temperature, when the temperature rises to 60 ℃, add toluene diisocyanate dropwise, and finish adding in 40 minutes;

[0033] (B) Then heat an...

Embodiment 2

[0039] 1) Preparation of steel pipe main body:

[0040] The solid tube is inspected and the surface defects are removed, cut into the required length, centered on the perforated end of the tube, then sent to the heating furnace to be heated, and pierced on the piercing machine; while piercing, it continuously rotates and advances, and the roller and Under the action of the plug, a cavity is gradually formed inside the billet, and then sent to the automatic rolling mill to continue rolling; finally the wall thickness is uniformed by the equalizer, and the diameter is sizing by the sizing machine to meet the specification requirements;

[0041] 2) Preparation of anticorrosive and wear resistant coatings:

[0042] (A) Add polyether diol, castor oil and organoclay with a molecular weight of 3000 to the reaction kettle and mix, and stir to increase the temperature. When the temperature rises to 60 ℃, add toluene diisocyanate dropwise and finish adding in 45 minutes;

[0043] (B) Then heat ...

Embodiment 3

[0049] 1) Preparation of steel pipe main body:

[0050] The solid tube is inspected and the surface defects are removed, cut into the required length, centered on the perforated end of the tube, then sent to the heating furnace to be heated, and pierced on the piercing machine; while piercing, it continuously rotates and advances, and the roller and Under the action of the plug, a cavity is gradually formed inside the billet, and then sent to the automatic rolling mill to continue rolling; finally the wall thickness is uniformed by the equalizer, and the diameter is sizing by the sizing machine to meet the specification requirements;

[0051] 2) Preparation of anticorrosive and wear resistant coatings:

[0052] (A) Add 3000 molecular weight polyether diol, castor oil, and organoclay to the reactor and mix, stir and raise the temperature, when the temperature rises to 60 ℃, add toluene diisocyanate dropwise, and finish adding in 50 minutes;

[0053] (B) Then heat and stir at 60 ℃ for 5...

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Abstract

The invention relates to a seamless pipe with an anticorrosive layer. A production process comprises the following steps: firstly, preparing a steel pipe main body; secondly, preparing an organic clay-polyurethane / polystyrene ternary nano-composite anticorrosive coating; and lastly, causing the steel pipe main body to pass by a high-power motor and driving an injection blade to quickly rotate, causing the milling materials, such as steel sand, steel shots, iron wire sections and mineral substances, to spray the surface of the steel pipe main body under an effect of a centrifugal force, applying roller conveying, adopting a heating airless spraying method for coating the anticorrosive coating on the surface of the processed steel pipe main body so as to form a coating film, and transferring and lifting the steel pipe to a material frame for coolly placing through a spiral lifter, thereby naturally drying the steel pipe. The production process provided by the invention is simple and convenient, the coating film has excellent property and the cost is low.

Description

technical field [0001] The invention relates to a steel pipe, in particular to a seamless steel pipe with an anti-corrosion layer. Background technique [0002] Steel pipe anti-corrosion refers to the corrosion of steel pipes due to chemical or electrochemical reactions in the use and transportation of steel pipes as a medium under the influence of the use environment and the transport medium. According to the statistical data of our country, the direct economic loss of domestic steel pipe corrosion is more than 280 billion yuan every year, and the global annual corrosion loss is as high as 500 billion U.S. dollars. In order to effectively prevent or control corrosion of steel pipes, scientists are seeking more effective methods. Large steel structures are an important part of a vast amount of infrastructure. Steel pipes are widely used in bridges, power stations, oil and water pipelines, oil and gas storage tanks, large-scale production equipment, ships, marine structures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/06C09D175/14C09D175/08C09D5/08C08G18/67C08G18/48C08F112/08C08K3/34
Inventor 张芝莲
Owner 张芝莲
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