Forming method for metal surface micro-nano holes through mechanical lapping and lapping and polishing machine

Abstract

The invention provides a forming method for metal surface micro-nano holes through mechanical lapping. The forming method comprises the steps that a lapping and polishing solution containing lapping particles and a metal workpiece with defects formed on the surface are provided; under the action of the lapping and polishing solution, mechanical lapping is carried out on the surface, with the defects, of the metal workpiece, the lapping and polishing solution is made to coerce the lapping particles to constantly carry out eddy lapping movement in the defects, lapping chips are generated by lapping the walls of the defects, the lapping particles and the lapping chips in the defects are flushed out constantly, and thus the micro-nano holes are formed in the defects. The invention further provides a lapping and polishing machine used in the forming method. Due to the fact that by means of the forming method, the micro-nano holes with the aperture capable of reaching the submicro dimension can be quickly formed in the defects, the forming time of the micro-nano holes is greatly shortened, the peripheries of the holes are in smooth transition, the phenomenon of stress concentration does not exist, the inner surfaces of the holes are regular and smooth, and the holes are hemispherical holes or cylindrical holes with the hemispherical bottoms.

Description

technical field [0001] The invention relates to a metal surface texturing treatment method and equipment, in particular to a forming method for mechanically grinding micro-nano holes on a metal surface and a grinding and polishing machine. Background technique [0002] The microporous texture on the metal surface can make the friction surface distribute micropores, which helps to improve the lubrication state of the friction pair, and the micropores store lubricant to prevent "dry grinding"; it can also increase the specific surface area of ​​the metal, which helps to improve the surface Adsorption and surface chemical or biological reaction effects. In the preparation of thin films, the microporous texture on the metal surface can improve the binding force of the film base, release the residual stress in the film, improve the load bearing capacity of the film, and prolong the service life of the film. For the connection of heterogeneous materials, such as metal and plastic...

AI Technical Summary

Problems solved by technology

[0004] However, the existing micro-discharge machining, micro-ultrasonic machining, electron beam machining, laser beam machining, and electrolytic machining are often limited by the physical properties of materials and their removal mechanisms, which usually manifest as complex equipment systems, high processing costs, low efficiency, and even Large-area micropore texture cannot be manufactured; the processing of electric discharge, electron beam and laser beam will also form a heat-affected zone on the edge of the microhole, that is, a hot melting zone, which will damage the quality of the metal surface; the electrolytic processing process is complicated, and it also causes environmental pollution. pollution problem

In addition, the existing state-of-the-art laser hole forming technology has a hole diameter processing level of more than 20 μm. The hole diameter processed by other methods is at least tens or even hundreds of microns. level, the nanopore

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