Anode assembly for electroplating outside engine block tank

Abstract

The invention discloses an anode assembly used for extra-groove electroplating of an engine cylinder block. The anode assembly comprises an anode body and an anode base fixed and conductively connected to the anode body, and an electroplating liquid backflow channel penetrates the anode body and the anode base. The anode assembly can be suitable for an extra-groove and intra-cavity electroplating scheme with electroplating liquid flowing, a flowing electroplating environment is formed and used for cylinder block electroplating, installation and use are convenient, the flowing electroplating liquid ensures that positive ions on plating are replaced in real time, the concentration difference of positive ions on the surface of cathode plating is basically unchanged, a large concentration difference is avoided, and the thickness change of the plating is controllable. Due to the undifferentiated concentration and the stable and uniform liquidity, density and compactness of the plating is ensured, positive ions not compactly combined with the plating can be brought away by the flowing electroplating liquid, loosened combination is avoided; and meanwhile, burrs on a plated edge can be effectively avoided through the structure, and the electroplating quality is ensured.

Description

technical field [0001] The invention relates to a component of an electroplating device for an engine block, in particular to an anode assembly used for flow electroplating of an engine block. Background technique [0002] As the main part of the engine, the cylinder block is used to form the combustion chamber together with the piston and the cylinder head, and provide the movement track for the piston assembly, thereby forming a power conversion environment. When the cylinder guides the piston to reciprocate continuously, the inner wall of the cylinder and the piston rub against each other for a long time and at high frequency, which reduces the useful power of the cylinder and consumes part of the energy. Therefore, there is electroplating on the inner wall in the prior art, and the electroplating coating is used to replace the cylinder liner to solve the above problems. In the usual electroplating process, the electroplating solution is in a basically static environment...

AI Technical Summary

Problems solved by technology

In the usual electroplating process, the electroplating solution is in a basically static environment, and the cations are passively moved to the inner surface of the cylinder as the cathode, and the resulting concentration difference makes the coating not tight, so it is easy to fall off, and the electroplating time is longer; and because The problem of concentration difference makes the coating thickness of the final product vary greatly and is difficult to control, which makes it difficult to control some key dimensions of the inner surface of the cylinder. Therefore, it is difficult to guarantee the quality of the finished product after electroplating

In the prior art, there is a technical scheme of circulating the electroplating solution to electroplate the nickel-silicon carbide composite layer on the inner circular surface of the cylinder, but because the anode structure itself and the cooperation with the cathode structure are not adaptable to the electroplating process, the final cylinder obtained Body products do not meet the needs of use

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