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Treatment method before coating the inner and outer walls of the oil pipe with anti-corrosion coating

A technology of anti-corrosion coating and treatment method, which is applied in the field of oil pipe wall surface treatment technology, and can solve the problems that the performance of the coating cannot meet the technical requirements, and the adhesion between the coating and the steel substrate is seriously affected, etc.

Active Publication Date: 2020-07-17
KARAMAY CITY KENENG ANTI CORROSION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the large-scale production process, due to the limitation of the implementation of technological methods, if the treatment of the oil pipe steel base fails to meet the standard requirements or meets the standard requirements and is polluted twice, the coating application will affect the relationship between the coating and the steel base. The adhesion is seriously affected, and the coating performance will definitely not meet the technical requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A treatment method before coating the inner and outer walls of the oil pipe with an anti-corrosion coating,

[0019] A. Treatment of the outer wall surface of the tubing:

[0020] Step 1. Throw balls with a diameter of 0.2-3.0mm to the outer wall of the tubing and then physically impact the balls on the outer wall of the tubing until the anchorage of the outer wall of the tubing reaches 15-20 μm; the thrown intact balls are recovered by the ball circulation system , the dust generated during the shot blasting process, including the raised dust and the powder broken by the ball impacting the outer wall of the oil pipe, is introduced into the dust filter by the flow gas generated by the induced draft fan, so that the dust filter blocks the dust In the dust collector, the flowing gas flows through it and is filtered by the dust filter to environmental cleanliness, and then discharged into the outdoor atmosphere; the oil pipe moves in a straight line and rotates to remove t...

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PUM

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Abstract

The invention belongs to an oil pipe wall surface treatment process, and in particular relates to a method for treating inner and outer walls of an oil pipe before coating of anti-corrosion coatings.The method comprises the steps of A. treating the outer wall surface of the oil pipe (cleaning and shot-blasting the outer wall surface of the oil pipe); B. treating the end faces of pipe orifices atboth ends of the oil pipe (cleaning the end faces of the pipe orifices at both ends of the oil pipe); C. treating the inner wall surface of the oil pipe (cleaning and shot-blasting the inner wall surface of the oil pipe). The method provided by the invention is suitable for the wall surface of any steel pipe, and can effectively enable the technical performance of the anti-corrosion coatings to benormally exerted.

Description

technical field [0001] The invention belongs to oil pipe wall surface treatment technology, in particular to a treatment method before coating the inner and outer walls of the oil pipe with anti-corrosion coating. Background technique [0002] Before the anti-corrosion coating work, the treatment of the oil pipe steel base is particularly important, and it is also a key step for the anti-corrosion coating work to meet the technical requirements. If the pre-treatment of the steel base fails to meet the technical requirements, no matter how good the anti-corrosion coating is, it will not be able to exert its original technical performance. Especially in the large-scale production process, due to the limitation of the implementation of technological methods, if the treatment of the oil pipe steel base fails to meet the standard requirements or meets the standard requirements and is polluted twice, the coating application will affect the relationship between the coating and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24C1/08B24C9/00B08B9/023B08B9/032B08B15/04
CPCB08B9/023B08B9/0321B08B15/04B24C1/086B24C9/003B24C9/006
Inventor 韩忠康兵福徐军锋张朝军梁金祥刘勇陈建华马意如王春成王永昌马海霞蒙会霞
Owner KARAMAY CITY KENENG ANTI CORROSION TECH CO LTD