Vibration-assisted Abrasive Flow Electrolytic Micro-grinding Composite Finishing Processing Method

Abstract

The invention relates to a vibration auxiliary abrasive particle flowing electrolysis micro grinding composite finishing process method, and belongs to the field of electrolysis machining. The method is characterized in that on the basis of the electrolysis polishing principle and the abrasive particle flow finishing process principle, the vibration auxiliary abrasive particle flowing electrolysis micro grinding composite finishing process method is provided, electrolytes mixed with abrasive particles with different grain diameters and in different shapes enter a runner at a certain speed and certain pressure, workpiece anodes and tool cathodes are assisted in vibration, meanwhile, power source machining voltage is adjusted to enable the anode potential to be in the anode workpiece polarization curve passivation area, and the vibration electrolysis polishing method and the abrasive particle flow finishing machining method are effectively composited; on the one hand, the electrolysis effect is used for generating the passivation film on the surface of the anode workpiece; on the other hand, the abrasive particles are driven to flow through the electrolytes, the passivation film and protrusions on the surface of the workpiece are subject to micro grinding, the protrusions are subject to electrodissolution, and the surface of the workpiece has the macro flattening effect.

Description

technical field [0001] The invention relates to the field of electrolytic machining, in particular to a vibration-assisted abrasive flow electrolytic micro-grinding compound finishing method. Background technique [0002] Blades, as a typical representative of metal workpieces with complex profiles, are key components that affect the performance of aeroengines. With the development of aviation and aerospace propulsion, the material properties of the blades tend to be high heat resistance, high strength, and high hardness. Higher requirements are also put forward in terms of quality. [0003] Although traditional grinding or milling can achieve a very low surface roughness, due to the existence of surface residual stress, the performance of the blade is greatly affected. [0004] At present, most of the surface grinding and polishing of blades at home and abroad are still in the manual grinding stage. Manual polishing is not only labor-intensive and inefficient, but also t...

AI Technical Summary

Problems solved by technology

Manual polishing is not only labor-intensive and inefficient, but also the polished surface is easy to burn, and it is difficult to guarantee the surface accuracy and surface integrity, resulting in reduced reliability

At the same time, affected by the technical level and proficiency of the workers, the processing quality is unstable, which seriously affects the performance, safety and reliability of the aero-engine, as well as the production cycle.

[0005] It can be seen that the existing manual polishing methods are no longer suitable for the mass production of aero-engines, and the later grinding and polishing technology and equipment have restricted the improvement of the overall level of aero-engines to some extent.

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