Method and device for producing antiseptic pipe by adopting nano-coatings

Abstract

The invention discloses a method and a device for producing an antiseptic pipe by adopting nano-coatings. The device for producing the antiseptic pipe by adopting the nano-coatings is composed of an electric pre-heater, a material placing machine, an air-free high-pressure spray coating machine, a homogenizer, a medium-frequency heater and the like. The method comprises the steps of (1) conveying basic pipes inside the electric pre-heater to preheat the basic pipes to the temperature of 50 DEG C to 80 DEG C, preheating the basic pipes for 1 to 1.5 minutes, (2) automatically spray coating the inner walls of the pipe cavities of the basic pipes by adopting the air-free high-pressure spray coating machine, enabling the spraying thickness of the nano-coating to achieve 150 micrometers, (3) conveying the basic pipes to the homogenizer to be stepped, heated and homogenized, installing reflecting heating plates above the homogenizer, enabling the rotating speed of the basic pipes on the homogenizer to be 35 rounds per minute, enabling the horizontal stepping speed to be 15-20 centimeters per minute, enabling the time of passing the homogenizer and achieving homogenizing of each basic pipe to be 30 to 40 minutes, enabling the secondary heating temperature of the basic pipes by the reflecting plates to be 100 DEG C, and (4) enabling the basic pipes to respectively pass the medium-frequency heater for tertiary heating and solidifying, enabling the heating temperature to be 120 DEG C, and enabling the nano-coatings to be once formed on the basic pipes.

Description

technical field [0001] The invention relates to an anti-corrosion coating production and processing method and equipment for oilfield water injection pipes, in particular to a method and equipment for producing anti-corrosion pipes using nanometer coatings. Background technique [0002] The United States developed powder coating technology in the 1980s, which caused a sensation in the petroleum industry with its outstanding anti-corrosion and anti-scaling properties. It has set off a technological revolution in the fields of oilfield water injection well engineering and water supply and drainage. Its technical feature is to use heating and high-speed rotating centrifugal atomization principle to spray powder in the basic tube lumen in the ordinary steel pipe (which can be called the basic tube), so that a uniform and smooth protective layer is formed in the tube cavity, so as to achieve Anti-corrosion and anti-scaling properties. However, there are still many disadvantages...

AI Technical Summary

Problems solved by technology

However, the denseness and leveling performance of nano-scale anti-corrosion coatings are very obvious, which brings many difficulties to the tube molding

In the oilfield water injection well pipe, there is a slight sag phenomenon when spraying 40-50um in one-time spraying, and the interface of the second recoating is not strong enough to easily cause the anti-corrosion layer to fall off

In order to achieve the best anti-corrosion effect, the thickness of the paint film must be more than 150um at one time. This is a very important research topic, but there is no feasible technical means to achieve this goal.

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