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Nuclear control rod coil chamber and anti-corrosion method thereof, surface coating preparation method, and application of aluminum powder coating thereto

A technology for anti-corrosion coating and nuclear control, applied in the direction of anti-corrosion coatings, coatings, conductive coatings, etc., can solve problems such as complex operation, affecting coating anti-corrosion effect, large porosity, etc., achieve simple preparation method, guarantee anti-corrosion effect, The effect of dense coating

Active Publication Date: 2019-10-01
DONGFANG TURBINE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this method requires special spraying equipment, and the operation is relatively complicated; at the same time, due to the limitation of the spraying process, the prepared Zn (zinc) anti-corrosion coating itself has a large porosity, which will inevitably affect the final anti-corrosion effect of the coating.

Method used

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  • Nuclear control rod coil chamber and anti-corrosion method thereof, surface coating preparation method, and application of aluminum powder coating thereto

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Embodiment 1

[0032] In this embodiment, the phosphate AI powder coating is sprayed on the surface of the nuclear control rod coil chamber, and the phosphate AI coating is prepared on the surface. The surface of the nuclear control rod coil chamber includes all surfaces of the nuclear control rod coil chamber, and all surfaces include but not only Limited to the outer surface, inner surface and small hole surface on the inner surface, the composition of phosphate AI powder coating includes phosphoric acid compound salt, aluminum powder, chromic anhydride and surfactant.

[0033] A method for preparing a phosphate AI coating on the surface of a nuclear control rod coil chamber, comprising the following steps:

[0034] Step a: Clean the surface of the coil chamber to be coated with a metal-specific cleaning agent to remove surface oil and foreign matter, and dry the surface of the coil chamber with clean compressed air;

[0035] Step b: Perform sandblasting pretreatment on the sprayed surface...

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Abstract

The invention discloses a nuclear control rod coil chamber and an anti-corrosion method thereof, a surface coating preparation method and application of aluminum powder coating thereto. According to the invention, a phosphate AI powder coating is applied to the surface anticorrosion of the nuclear control rod coil chamber, and the nuclear control rod coil chamber has better anticorrosion performance; a phosphate Al anticorrosive coating layer is prepared on the surface of a coil chamber of a nuclear control rod drive device, the coating layer is compact and has good electric conductivity, plays a good role of a sacrificial anode, can effectively guarantee the anticorrosive effect of the coil chamber, and further prolongs the service life of products; and the preparation method is simple.

Description

technical field [0001] The invention relates to a nuclear control rod coil chamber and its anti-corrosion method, a surface coating preparation method and the application of aluminum powder coating therein, and belongs to the technical field of nuclear control rod driving devices. Background technique [0002] The nuclear control rod driving mechanism is a servo mechanism for the reactor control system and safety protection system of the nuclear power plant. Its function is to drive the control rods to lift, lower, maintain or quickly drop the rods within the core range according to the requirements of the reactor control system, so as to realize the functions of adjusting the power of the reactor and shutting down the reactor safely. Therefore, its performance directly affects the normal operation and safety of nuclear power plants. As one of the important components of the nuclear control rod driving device, the coil room has a service requirement of 30-40 years after ins...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D1/00C09D5/24
CPCC09D5/103C09D1/00C09D5/24
Inventor 林亮姜英娄霞禹争光张红亮曹海
Owner DONGFANG TURBINE CO LTD
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