Method for manufacturing non-smooth surface of organism and device

Abstract

The invention discloses a 'method for manufacturing a non-smooth surface of an organism and a device', relates to the field of laser processing, and particularly relates to an auxiliary manufacturing method for laser shock plastic forming under the condition of dynamic strain aging temperature and a device. The scheme includes that a manufactured mold with a specific shape is placed on a space between the surface of a metal workpiece and an absorption layer required by laser shock, and is heated in a vacuum heating box until the dynamic strain aging temperature is reached; a laser beam irradiates on the absorption layer, powerful shock force is generated, the surface of a part of the metal workpiece plastically deforms under the joint effect of the shock force and heating of a substrate, and patterns opposite to those of the mold are formed as a result of plastic deformation jointly generated by the laser shock and the heating of the substrate of the metal workpiece.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a method and device for auxiliary preparation of laser shock plastic forming under the condition of dynamic strain aging temperature, which is suitable for the field of laser shock metal workpiece surface forming processing and biological non-smooth surface preparation. Background technique [0002] Modern industry and science and technology require machines to develop in the direction of long service life and good reliability; at present, 1 / 3~1 / 2 of the energy in the world is consumed in various forms of friction and wear in the process of energy transfer by various machines , and the failure of various mechanical parts due to wear and tear accounts for more than half of all failure parts, so it is very necessary to save energy and reduce losses by improving friction. [0003] The biological non-smooth surface has the performance of friction and wear resistance. By studying the s...

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Problems solved by technology

[0005] The patent "A device for preparing biological non-smooth surface of metal workpiece" (application date: 2006.3.24, application number: 200610016699.6) uses laser shock forming method to produce biological non-smooth surface on the surface of metal workpiece, and does not describe laser manufacturing in detail The process of biological non-smooth surface; the patent "a method and device for preparing surface bionic structure by laser composite" (application date: 2009.6.12, application number: 200910033454.8) uses laser engraving technology and laser shock strengthening technology to process biological non-smooth surface, The brief processing process is to use the fiber laser to carve the texture of the biological non-smooth surface on the surface of the metal workpiece, and then use the YAG laser to perform laser shock strengthening on it. Improve and finally prolong the service life; but this processing method has several shortcomings. First, laser engraving uses the laser thermal effect to remove the surface material of the part, and the processed material is instantly melted and gasified under laser irradiation. The purpose of high temperature is to change the tissue structure on both sides of the notch and generate tensile stress, which reduces its performance; and then use laser shock to strengthen the surface, the purpose is to make up for the performance of the surface and eliminate the tensile stress, but laser shock will also cause metal workpiece surface Plastic deformation will slightly change the shape of the texture; second, laser engraving and then laser shock strengthening is a composite processing process, and the process is relatively complicated

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