Preparation method for simulated surfaces

A surface topography, metal surface technology, applied in welding equipment, manufacturing tools, laser welding equipment and other directions, can solve the problems of insufficient precision control, low processing efficiency, etc., to achieve high processing efficiency, improve fatigue resistance and stress corrosion resistance. , The effect of easy control of surface pit morphology

Inactive Publication Date: 2012-06-27
JIANGSU UNIV
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Problems solved by technology

[0007] The method of using laser shock forming to prepare a special bionic anti-friction surface morphology on the metal surface overcomes

Method used

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  • Preparation method for simulated surfaces
  • Preparation method for simulated surfaces
  • Preparation method for simulated surfaces

Examples

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Example Embodiment

[0020] Hereinafter, a description will be given by taking laser shock forming a superimposed (fish-scale) bionic metal surface as an example.

[0021] First, pre-treat the surface of the metal 5 to be processed to make the surface as smooth as possible. Then set the wavelength, pulse width, pulse energy, and spot radius parameters of the high-power laser according to the required special surface topography. In this example, the wavelength can be set to 1.054μm, the pulse width is 20.1ns, and the pulse energy is 36J. Then program the running path of the CNC table according to the distribution of the special surface topography; and paste aluminum foil 3 on the surface of the metal 5 to be impacted. , Attach a constraining layer outside the aluminum foil. In this example, water 2 is used as the constraining layer. Finally, the metal 5 to be impacted is fixed on the numerical control workbench with a clamp, and the high-power laser is controlled to emit a laser beam 1 to perform la...

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Abstract

The invention discloses a laser impact preparation method for simulated surfaces. Metal pretreated is fixed on a numerical control workbench through a clamp, then wave length, pulse width, pulse energy, and light spot radius parameters of a high power laser can be adjusted according to the appearance of the surfaces of special metal required, programming is performed to the running route of the numerical control workbench, and then laser impacts to the well adjusted metal surface can be performed so as to form various special surface appearances. The special surface appearances can be used for storing oil under the lack of oil, and certain microbubbles can also be stored, so as to enable gas to participate lubrication. Therefore, skin friction can be lowered and an antifriction surface is formed; and while the special surface appearances are prepared, strengthening to metal surface can be performed, and the service life and the stress and corrosion resisting effect are improved. The method has the advantages of high processing efficiency, good controbility and convenience in preparation.

Description

Technical field [0001] The invention relates to a metal surface treatment method in the field of mechanical engineering. Background technique [0002] Changing the metal surface morphology to change its performance, thereby extending the service life of parts, has always been the object of research. [0003] The traditional method of scraping and grinding is used to make the metal surface after scraping and grinding have a certain special surface morphology, that is, the bionic surface. This morphology can reduce the friction of the metal surface in the case of oil flooding, and achieve the effect of drag reduction. In the scraping process, the requirements are high, and the blade must be flat, smooth and sharp, and each surface often needs to be repeatedly scraped, and the scraped surface also has random characteristics. Because it is a manual operation, this method has low control accuracy on the metal surface topography and low processing efficiency. [0004] Later, people used...

Claims

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Application Information

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IPC IPC(8): B23K26/00B23K26/42B23K26/356
Inventor 姜银方黄宇姜文帆张永康岳陆游黄立伟郭振宁龙昆
Owner JIANGSU UNIV
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