Local brush plating method of black chromium plating layer

Abstract

The invention discloses a local brush plating method of a black chromium plating layer. The local brush plating method comprises the following process steps in sequence: isolation protection, combined oil removal, first deionized water washing, activation, nickel brush plating, second deionized water washing, black chromium brush plating, third deionized water washing, drying and isolation removal. The local brush plating method can be used for preparing a local black chromium plating layer on the surface of a part and repairing the black chromium plating layer after local damage. The local brush plating method comprises the technological process and technological parameters of local brush plating of the black chromium plating layer, the formula and preparation of a brush plating black chromium solution, usage operation matters requiring attention, and inspection control requirements and methods. According to the technical scheme provided by the method, the problems that in the conventional black chromium coating repairing process, the construction process is complex, and the construction period is long are solved; and the damaged part on the surface of the part is directly repaired so that the disassembling is avoided, the construction period is shortened, and resource waste is reduced.

Description

technical field [0001] This application relates to but not limited to the technical field of surface treatment of iron and steel parts, specifically relates to the technical field of preparation of black chromium coating on the surface of steel parts, especially a partial brush plating method of black chromium coating. Background technique [0002] The black chrome coating is dark gray to black, and the matte black chrome coating has a matting effect. It is often used in optical instruments and instruments. It is often used in the surface treatment of instrument panel parts and joysticks in the cockpit in helicopter manufacturing. Reflective, wear-resistant and corrosion-resistant properties can prevent pilots from visual fatigue and prolong the life of parts during repeated friction. [0003] The outer surface of the joystick assembly in the cockpit of the Z-20 and Z-9 helicopters is plated with black chrome, the inner surface is partially brushed with cadmium, and the inne...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the present invention: In order to solve the above technical problems, the embodiment of the present invention provides a partial brush-plating method of black chrome coating, so as to solve the problem that the existing black chrome coating repair process is relatively cumbersome and has a long construction period.

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