Electrodeposition device

Abstract

The invention discloses an electrodeposition device which comprises an electrodeposition tank, a cathode, a cathode moving rod, a gear, a gear mounting rod and a stirring paddle.When the electrodeposition device works, the anode moving rod is in horizontal reciprocating motion under action of external force, a rack on the cathode moving rod drives the gear to be in forward and backward circular motion, and in this way, an electrolyte quickly flows under stirring action of the stirring paddle; the outer edge of the stirring paddle is close to the surface of the cathode, so that a flow field, on the surface of the cathode, of the electrolyte is relatively uniform, and uniformity of thickness of a cathode electrodeposition layer in the electrodeposition process is improved.

Description

technical field [0001] The invention relates to an electrodeposition device, in particular to a device for improving the thickness uniformity of a cathode electrodeposition layer. Background technique [0002] At present, in industrial production, in order to increase the electrodeposition speed and the ion diffusion speed in the solution, an electrolyte stirring device is often added. Electrodeposition (including electroplating, electroforming) electrolyte is mostly stirred by air stirring, liquid circulation stirring or cathode moving device. Although air agitation can make the solution mix evenly, it is not suitable for the electrodeposition process that requires avoiding ion oxidation in the electrodeposition process, and air agitation cannot ensure a stable flow field on the surface of the cathode, so the electrodeposition composition and the thickness of the electrodeposition layer Uniformity will be affected; in the cathode moving stirring device, the cathode moving ...

AI Technical Summary

Problems solved by technology

Although air agitation can make the solution mix evenly, it is not suitable for the electrodeposition process that requires avoiding ion oxidation in the electrodeposition process, and air agitation cannot ensure a stable flow field on the surface of the cathode, so the electrodeposition composition and the thickness of the electrodeposition layer Uniformity will be affected; in the cathode moving stirring device, the cathode moving and stirring is easier to obtain a uniform mass transfer distribution on the cathode surface, but the intensity of the cathode moving and stirring is generally not high, and the global stirring effect on the entire electrodeposition tank is relatively low. The deposition rate is generally not high. The main reason is: the conventional cathode movement and stirring only rely on the shearing action between the workpiece (cathode) and the electrolyte to drive the movement of the electrolyte. If the workpiece cathode is in the shape of a flat sheet, its stirring effect is very weak. of

Although a variety of cathode stirring devices have been developed so far, they still have not achieved very satisfactory results.

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