Brush plating device and method for repairing scratches of mechanical parts

Abstract

The invention discloses a brush plating device and method for repairing scratches of mechanical parts. The device comprises a plating pen drive device, a bracket and a plating solution circulating feeding device, wherein the plating pen drive device clamps a plating pen and drives the plating pen to move in a straight line in a reciprocating manner; the bracket is used for fixing a plating part; the plating pen comprises a conductive pen handle; a graphite nib with a hollow cavity is arranged at one end part of the conductive pen handle; a plating solution lead-in hole and a plating solution seepage hole, which are communicated with the inner cavity, are formed on the nib; the plating solution circulating feeding device comprises a liquid storage tank; the liquid inlet of the liquid storage tank is connected with the liquid outlet of a liquid collecting box; the liquid outlet of the liquid storage tank is connected with the plating solution lead-in hole of the nib; the conductive pen handle and the plating part are connected with a positive electrode and a negative electrode of a direct current power supply. The method comprises the following steps: circularly feeding liquid; carrying out linear friction motion by the nib by tightly attaching to the scratched part of the plating part after stabilization; electrifying the conductive pen handle and the plating part, and beginning the brush plating operation. A coating is prepared by adopting the modes of liquid feeding inside the graphite plating pen and linear friction on the scratched parts of the mechanical parts in the reciprocating manner; repair on the scratched parts is achieved; the repair effect is good.

Description

technical field [0001] The invention relates to an electric brush plating device and method, in particular to an electric brush plating device and method used for repairing scratches on mechanical parts. Background technique [0002] There are a large number of hard chrome-plated parts in mechanical parts used in equipment and other fields, such as barrels of artillery, hydraulic cylinders and piston rods in construction machinery, etc. The matrix of the hard chrome-plated part adopts a carbon steel matrix, and a layer of hard chromium coating is plated on the surface of the carbon steel matrix. Hard chromium plating is also called wear-resistant chromium. The chromium plating layer has high hardness and low friction coefficient. Hard chrome plating of mechanical parts can improve its wear resistance and prolong its service life. However, during use, due to stress or improper use, chrome-plated parts will gradually be damaged, and the main forms of damage are local wear, sc...

AI Technical Summary

Problems solved by technology

[0005] Second, it causes waste of chrome plating on undamaged parts

If it is repaired by re-chrome plating, most of the good chrome plating on the parts will be worn away, which will inevitably cause huge waste

[0006] Third, the pollution of chrome plating technology is serious

However, at present, the scratch repair of mechanical parts, especially hard chrome-plated parts, is mostly done by the traditional manual brush plating method. Scratching the scratched parts, this method has the following defects: first, the labor intensity is high and the work efficiency is low; The way of rubbing can't achieve even friction between the graphite coating pen and the scratched parts, so the repaired coating is unstable and the quality is not high

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