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A process method for anticorrosion by spraying oil casing with black uv paint

A process method, oil casing technology, applied in the device, coating, pretreatment surface, etc. of the surface coating liquid, can solve the problems of erosion, curing, peeling, etc., to ensure full absorption, good film formation, good effect on neutral

Active Publication Date: 2020-07-28
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although black UV paint has good advantages in film blackness, adhesion, anti-corrosion performance, leveling, stability and safe operation, it will cause many problems when spraying with transparent UV paint. If it is sprayed in advance, it will cover the entire coupling, making it lose the role of marking the steel grade; when curing, the black UV paint does not absorb enough ultraviolet energy, resulting in defects that only the surface is cured, causing rust spots and rust on the surface of the steel pipe paint film. traces and bubble points, corrosion, shedding, damage and other defects

Method used

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  • A process method for anticorrosion by spraying oil casing with black uv paint
  • A process method for anticorrosion by spraying oil casing with black uv paint
  • A process method for anticorrosion by spraying oil casing with black uv paint

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Embodiment Construction

[0025] This process plan is to use black UV paint for UV curing spraying. Spraying adopts pneumatic spray gun 16 to carry out atomized spraying, from figure 2 and image 3 : It can be seen that the four spray guns fixed on the spray ring are different from the four spray guns used in the original spray gun. The eight pneumatic spray guns 16 are all fixed on the front spray ring 17, so that the spray guns have good centering and are easy to control. The spray gun delay time, the air knife 19 installed on the rear spray ring 18 and the pneumatic spray gun 16 of the front spray ring 17 blow against each other to prevent the paint mist from entering the curing chamber 21 and play a safety role; the pneumatic spray gun 16 includes two air intake lines, one The compressed air opens the gun needle, and the paint is shot out; one way of compressed air passes through the four small holes next to the gun head to break up the jet, and atomizes the broken jet through the four atomizing ...

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Abstract

The invention discloses a technological method of carrying out corrosion protection by adopting black UV paint to spray an oil casing. Original transparent UV paint is poor in covering property and low in adhesive force, which results in the problems that the product appearance is worse, and rust, grinding traces and blots can not be covered. The technological method adopts the black UV paint for corrosion protection. The technological method comprises the steps of weighing, length measurement, marking, painting and sign spraying. Through delay control spraying, a coupling is prevented from being sprayed excessively, and the color of the coupling is protected; and a metal halid lamp is adopted and is matched with the black UV paint for solidification, so that the solidification is complete, the painting quality is ensured, and the product quality of the oil casing is improved.

Description

Technical field: [0001] The invention belongs to the field of anticorrosion of oil casings, and in particular relates to a process method for anticorrosion by spraying oil casings with black UV paint. Background technique: [0002] The finished steel pipe needs short-term anti-corrosion to adapt to the storage environment of the oilfield site. The steel pipe painting equipment of the pipe processing production line sprays the paint on the surface of the steel pipe, and it is cured by the ultraviolet curing device to realize the anti-corrosion of the outer surface of the steel pipe. Due to the production and transportation process of the tube billet, the surface is seriously oily and rusted, and the transparent UV paint has poor covering performance and weak adhesion, resulting in poor product appearance, rust, grinding marks, and stains cannot be covered; The paint is more serious. [0003] The announcement number published by the Chinese Patent Office on August 7, 2012 is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/02B05D3/06B05D5/00B05D7/16
CPCB05D1/02B05D3/067B05D5/00B05D7/16B05D2202/15B05D2254/02
Inventor 倪书民丁超王旭李林军刘少东
Owner BC P INC CHINA NAT PETROLEUM CORP
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