Surface spraying method for metal light guiding control panel

Abstract

The invention relates to a surface spraying method for a metal light guiding control panel. The method comprises the following steps that firstly, the metal panel is provided, an insert counter bore is formed in the metal panel, an insert is contained in the insert counter bore, the insert is provided with an insert upper surface, and a panel upper surface is flush with the insert upper surface; secondly, the panel upper surface and the insert upper surface are cleaned; thirdly, a composite film is provided and provided with a surface insulating layer and a surface adsorption layer, and the surface adsorption layer is attached to the insert upper surface and the panel upper surface; fourthly, primer is sprayed; fifthly, the surface insulating layer is removed, and the transparent colorless surface adsorption layer is retained; sixthly, the light transmitting white paint is sprayed; seventhly, the shading finishing coat is sprayed; eighthly, a light guiding illumination character is etched. Thus, the size change produced in a joint due to the temperature change is offset through superelasticity of the composite film, and it is avoided that a paint layer is tensioned and fractured by stress.

Description

technical field [0001] The invention relates to a surface spraying process of a light guide panel, in particular to a surface spraying method for a metal light guide control panel. Background technique [0002] In aviation, shipborne weapons and other equipment, some complex control systems use a large number of metal control panels, and in order to mark the instruction information of different control devices in low light and night vision environments, metal light guide panels will be embedded Light organic materials, and spray paint lettering, under the action of the backlight circuit, it has the effect of backlight. At present, the processing technology of the metal light guide panel is mainly to make a counterbore on the front of the metal panel, then inlay the light-transmitting organic material insert on the counterbore, then spray paint on the entire metal panel, and finally make the light-transmitting Engraving on inserts. The light guide control panel manufactured...

AI Technical Summary

Problems solved by technology

However, due to the large difference in the thermal expansion coefficient between the organic material insert and the metal panel, a large dimensional change will occur in the thermal shock test, which will cause wrinkles and fractures on the paint layer at the joint of the panel insert, affecting the appearance of the product and light performance

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