Method for preparing micro-nano composite texturing cutting tool by using femtosecond laser

Abstract

The invention relates to the technical field of micro-structural surface preparation and laser micro-processing, and in particular provides a method for preparing a micro-nano composite texturing cutting tool by using femtosecond laser. In the method, micro-nano texturing and micro/nano composite texturing preparation is performed on the cutting tool surface by utilizing the unique interaction property between femtosecond laser and materials, the operation is simple, and the accuracy can be controlled. The preparation of micro/nano composite texture can be performed on a coated cutting tool by adopting a coated surface direct texturing method or a two-step composite texturing method. The method overcomes the defect of singleness of texturing only in micron scale in the conventional cutting tool texturing technology, and can further improve the abrasion resistance of the cutting tool, and prolong the service life of the cutting tool.

Description

technical field [0001] The invention belongs to the technical field of micro-manufacturing, and in particular relates to a femtosecond laser preparation method of a micro-nano composite textured tool. Background technique [0002] In recent years, in order to reduce the weight of aircraft and auto parts, the use of aluminum alloy has increased year by year, and the processing of aluminum alloy parts has become more and more important. Due to the low melting point and high ductility of aluminum alloy, the tool blade is prone to sticking during cutting, which not only affects the surface roughness of the workpiece to be processed, but also has serious early damage of the tool, which is far from reaching the expected service life. Early severe wear of tools like this is not uncommon in high-speed cutting of difficult-to-machine materials such as high-temperature aluminum alloy parts used in aerospace, energy and other fields, and has become an important issue affecting the deve...

AI Technical Summary

Problems solved by technology

Currently limited by micromachining technology, most of the microstructures formed in the existing tool surface texture technology are in the size range from submillimeter to tens of microns, and it is difficult to obtain micron and nanoscale structures.

In addition, because most of the existing tool material removal methods have severe thermal effects and large heat-affected zones, these techniques will cause a wide range of coating peeling and failure when used for coating surface texturing, which limits the Combination of coating technology and surface texturing technology

Since the existing surface texturing technology is difficult to form micro-nano cross-scale texture, and it will cause peeling and failure of the tool coating, if the tool surface and the tool coating surface can be textured across scales without heat-affected zones It will help to greatly improve the lubrication, anti-wear and anti-adhesion capabilities of cutting tools, and prolong the service life of cutting tools

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