Nuclear grade machine cabinet panel frame surface treatment method and nuclear grade machine cabinet panel

Abstract

The invention belongs to the technical field of frame surface treatment technology, provides a nuclear grade machine cabinet panel frame surface treatment method and a nuclear grade machine cabinet panel, and aims to solve the technical problem in the prior art that the coating adhesive force is reduced in the overall galvanization technology and the hot galvanized plate processing technology. Thenuclear grade machine cabinet panel frame surface treatment method comprises the following steps: S1, carrying out sand blasting treatment on the surface of the frame to increase the surface roughness of the frame; S2, carrying out local hot zinc spraying, or copper product chrome-plating or copper product nickel plating treatment on the surface of the frame; S3, carrying out sealing treatment onthe surface of the frame; S4, pasting a high temperature protective film to the part, needing to be penetrated through, of the surface of the frame for protection; and S5, spraying paint on the surface of the frame. With adoption of the nuclear grade machine cabinet panel frame surface treatment method, surface anticorrosion treatment is carried out on a cavity and an interlayer to improve the strength and the shielding and isolating performance of a product.

Description

technical field [0001] The present invention relates to the technical field of frame surface treatment technology, in particular to the technical field of cabinet panel frame surface process treatment, and more specifically, to a nuclear-grade cabinet panel frame surface treatment method and a nuclear-level cabinet panel frame. Background technique [0002] There are a lot of cabinets and panels in the digital instrument control system of nuclear power plants, and the surface treatment of such cabinets and panels requires high strength for the cabinets and panels in the nuclear power industry and needs to meet the requirements of shielding and isolation; therefore, there are many interlayers and cavities. , where the equipment is installed must meet the requirements for lap connection. [0003] In the existing processing industry, in order to meet the above requirements, there are mainly two process methods: overall galvanizing and hot-dip galvanized sheet processing. But t...

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Problems solved by technology

2) During the surface treatment process, acid, alkali, and salt solutions will enter the cavity and interlayer gaps, and cannot be completely removed; material corrosion will be accelerated in a humid environment

3) Due to the inevitable material corrosion phenomenon, the strength and performance of the product will decrease after many years, and it is impossible to determine whether it meets the design requirements

4) After overall galvanizing, the chromate layer on the surface will significantly reduce the adhesion of the paint

[0005] In the technical scheme of the hot-dip galvanized sheet processing technology: 1) During the processing, the zinc layer will be damaged to a certain extent (such as welding and grinding at the corner joints), and it cannot be repaired to meet the conduction requirements; Zinc spray treatment, this method cannot guarantee the long-term anti-corrosion requirements of the damaged zinc layer

2) During the surface treatment process, the solution will enter the cavity and the interlayer gap, which cannot be completely removed; under certain conditions, it will cause corrosion of the zinc layer and cause the material to lose its protective layer

3) In the process of surface treatment, in order to avoid the damage of zinc layer caused by acid solution, there is no pickling process; this will affect the final cleanliness of the substrate surface and cause the coating adhesion to decrease

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