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Method and device for forming micro-texture in composite mode on inner surface of cylinder sleeve through laser

An inner surface, micro-texture technology, used in laser welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as increasing manufacturing costs, inability to take into account lubrication and wear resistance, etc., to improve service life, improve lubricity and resistance. Wear performance, uniform effect

Inactive Publication Date: 2013-05-22
WENZHOU UNIVERSITY +1
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Problems solved by technology

However, these proprietary technologies increase the complexity of the parts processing technology, increase the manufacturing cost, and have certain limitations, because a single technology cannot meet the requirements of lubrication and wear resistance

Method used

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  • Method and device for forming micro-texture in composite mode on inner surface of cylinder sleeve through laser

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Embodiment Construction

[0027] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The method described in the present invention first uses a femtosecond laser to prepare a regular microscopic geometric shape with a certain density (spacing), width, depth, angle and shape on the surface of the cylinder liner, and then uses laser shock waves to intensify the treatment of the microscopic geometric shape area. The inner surface of the cylinder liner is machined into the microstructure of the required shape and arrangement.

[0029] figure 1 Shown is a schematic diagram of the device on the inner surface of the laser composite micro-textured cylinder liner, including a laser micro-textured optical path part, a laser shock strengthening optical path part, a control part and a workbench 10; the laser micro-textured optical path part includes a femtosecond laser 17, 45° total re...

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Abstract

The invention provides a method for forming micro-texture in a composite mode on the inner surface of a cylinder sleeve through laser. The method comprises the following steps: step (1), a femtosecond laser device is used for processing a needed microcosmic shape on the inner surface of the cylinder sleeve; and step (2), a nanosecond laser device is used for strengthening the area of the microcosmic shape processed in the step (1) through laser shock waves. Under the condition of dry friction, micro-concave surface texture can be used as a storage device for storing wear particles to reduce abrasive wear and furrows on the friction surface, and therefore the wear rate is lowered. The laser shock waves can eliminate residual tension after the micro-texture is formed on the inner surface of the cylinder sleeve, and therefore deep residual compressive stress is formed, grain refinement is enabled to be more uniform, the hardness, the abrasive resistance and the anti-fatigue performance of the cylinder sleeve are improved, and the service life of the cylinder sleeve is prolonged. The invention further provides a device for forming the micro-texture in the composite mode on the inner surface of the cylinder sleeve through the laser at the same time.

Description

technical field [0001] The invention belongs to the technical field of laser micro-manufacturing, and in particular relates to a method and a device for laser composite micro-texturing the inner surface of a cylinder liner. Background technique [0002] Laser micro-modeling technology is an easy-to-control, high-efficiency modern processing method. It uses regular micro-geometric features with a certain energy density (spacing), width, depth, angle, and shape to form a dynamic pressure fluid on the surface of the friction pair. Lubrication or elastohydrodynamic lubrication. At the same time, the thermal benefit of the laser is used to change the metallographic structure, so as to achieve the dual effects of lubricating and reducing wear and strengthening anti-wear on the surface of the friction pair. [0003] The tribological behavior of the friction pair not only affects the working performance and operating efficiency of the machine, but also has a very important impact o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/00B23K26/06B23K26/14B23K26/18B23K26/42C21D1/09B23K26/146B23K26/70
Inventor 冯爱新卢轶薛伟王瑞延顾永玉
Owner WENZHOU UNIVERSITY
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