Protection method of high-corrosion-resistance airborne aluminum-based LRM module

Abstract

The invention discloses a protection method of a high-corrosion-resistance airborne aluminum-based LRM module. The technology is simple and convenient, the corrosion resistance is high, and the conductivity of a treated workpiece is good. According to the technical scheme, the method comprises the steps that a proper hanging mode and a proper hanging tool are selected in combination with the structural form of an LRM module part, the LRM module part is installed on the hanging tool in the oxidation process, oil stains and oxide skin on the surface of an LRM module product are removed, the cleaned product is put into a PP / PVC groove natural-color conductive oxidation solution, oxidation treatment is performed through matching with a phosphoric acid system of which the pH value is 1-2, oxidation is performed for 4-6 min at the low temperature of 20-30 DEG C, the treated product is placed into a confining liquid for confining, and curing is performed for 30 min at the temperature of 60 DEG C; a chemical treatment film layer which keeps the natural color of an aluminum product and does not affect the surface conductivity is obtained on the LRM module part, and an anti-static film is pasted on the surface of the LRM module part finally.

Description

technical field [0001] The invention relates to a protection method for an airborne aluminum-based LRM module, and is especially suitable for the protection of the LRM module on the airborne integrated electronic equipment with electromagnetic shielding requirements. Background technique [0002] With the development of modern airborne electronic technology, the functional integration of modularized electronic equipment is getting higher and higher, and the requirements for environmental adaptability and performance are becoming more and more stringent. However, the requirements for structural shape are becoming more and more compact. Therefore, a higher degree of integrated structure is required to meet the requirements of use. In the past, many independent electronic equipment LRUs were replaced by a more powerful, complex, and smaller field-replaceable module LRM. Installed in a modular integrated rack, the signal interconnection between each other is realized through op...

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Problems solved by technology

[0005] The main problem to be solved by the invention is that the corrosion resistance of the natural-color conductive oxide film layer is poor, and the protection problems in the process of assembly, commissioning and environmental testing of the natural-color conductive oxide products improve the long-term reliability of electronic equipment and provide a simple and convenient process. , strong corrosion resistance, good electrical conductivity of the workpiece after treatment, maintaining the original color of aluminum parts, and not corroding the substrate. The protection method of the LRM module of the airborne complex structure electronic equipment

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