Compressed air microporous stirring device for surface treatment tank liquor

Abstract

The invention belongs to the technical field of surface treatment of a part, and relates to a compressed air microporous stirring device for a surface treatment tank liquor, comprising an air inlet pipe, an air equalizing pipe, a microporous stirring pipe and a compressed air source; wherein the compressed air source communicates with the microporous stirring pipe through the air inlet pipe and the air equalizing pipe in sequence; the microporous stirring pipe is a PE polymer polyethylene microporous tube containing micron-sized pores. The invention provides a compressed air micropore stirringdevice for the surface treatment tank liquor, which has the advantages of constant tank liquor temperature, uniform concentration, good consistency between an anodized film layer and a plating layerfor surface treatment of parts and ability of preventing the heat of parts from being burnt effectively.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of parts, and relates to a compressed air microporous stirring device for surface treatment bath liquid, in particular to a microporous stirring device mainly used for anodizing solutions and electroplating solutions of aluminum alloy materials. Background technique [0002] At present, there are two ways to stir the surface treatment tank liquid: one is mechanical stirring, and the acid pump is used to circulate the tank liquid, and the tank liquid is pumped out from the middle of the tank or overflowed by the liquid surface, and then returned to the tank from the drilled pipe at the bottom of the tank Inside. This stirring method often forms a system with the bath cooling equipment. In order to ensure the uniform temperature of the bath, the circulation volume needs to be 3 to 4 times the bath volume per hour, and the requirement for the circulation volume is relatively high. The seco...

AI Technical Summary

Problems solved by technology

This oil-free air mixing method, due to the large diameter of the compressed air nozzle hole (millimeter level), produces large air bubbles, which is easy to produce air bands for parts with complex structures, resulting in uneven anodized film or coating. At the same time, conventional oil-free The large bubbles generated by the air stirring system, due to the poor conductivity of the bubbles, make the current distribution uneven on the surface of the part, resulting in poor consistency of the anodized film and coating on the surface of the part; in addition, due to the existence of large bubbles, the parts are prone to local overheating, and Overheating and burning phenomenon

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