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Engine air cylinder sleeve-piston ring laser shot blasting method

An engine cylinder and laser shot peening technology, which is applied in the application of laser shot peening technology in engine cylinder liner-piston ring and automobile engine cylinder liner, which can solve the problem that honing cannot control the texture at will, and cannot process independent pits, etc. problems, achieve good lubrication and anti-wear properties, avoid thermal stress, and achieve good controllability

Inactive Publication Date: 2018-10-16
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional honing cannot adjust the texture at will, and cannot process independent pits; laser peening technology relies on laser, which can realize the pit shape on the surface. Due to the high energy density of laser, almost all materials can be processed

Method used

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  • Engine air cylinder sleeve-piston ring laser shot blasting method
  • Engine air cylinder sleeve-piston ring laser shot blasting method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solution of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0017] A method for laser peening of the engine cylinder liner-piston ring. Use absorbent cotton dipped in absolute ethanol to wipe and clean the surface of the part to remove oil stains on the surface of the part; paste aluminum foil tape on the surface to be laser peened as an absorption layer, the thickness of the aluminum foil tape 0.12mm; operate the manipulator to control the water flow, set the constrained layer by spraying deionized water to the absorbing layer, and the thickness of the constrained layer is 2mm; fix the parts on the fixture of the operation platform; write the path code, and use the manipulator to adjust the laser path The single point laser distance is 2mm. Laser shock process parameters The laser pulse energy is 5J, the spot diameter is 1mm, and the pulse width is 15ns. Laser peening is carried out to complet...

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Abstract

The invention provides an engine air cylinder sleeve-piston ring laser shot blasting method which comprises the following steps: S1, dipping degreasing cotton in absolute ethyl alcohol to wipe the surface of an air cylinder sleeve-piston ring so as to remove oil dirt on the surface of a part; S2, pasting an aluminium foil adhesive tape as an absorption layer on the to-be shot blasted surface of the air cylinder sleeve-piston ring; S3, controlling the water flow, and arranging a restraint layer by spraying deionized water on the absorption layer; and S4, clamping and fixing the air cylinder sleeve-piston ring on the clamp of an operating platform, and adjusting the laser path to start laser shot blasting so as to finish laser shot blasting modeling of the part. According to the engine air cylinder sleeve-piston ring laser shot blasting method, tiny concave pits on a surface subject to shot blasting has an oil storage function to realize an excellent lubricating function and reduce friction loss.

Description

technical field [0001] The invention relates to the application of laser peening technology in engine cylinder liners-piston rings, in particular to the application of laser peening technology in automobile engine cylinder liners. Background technique [0002] In general mechanical device systems, there are various friction pairs. The tribological behavior of these friction pairs not only affects the working performance and operating efficiency of the mechanical system, but also is the main cause of its failure. The cylinder liner-piston ring friction pair of an internal combustion engine is one of the most important friction pairs in an internal combustion engine, which has a decisive impact on the performance (power, economy, emission characteristics, stability, etc.) and service life of the internal combustion engine. At present, the reduction of cylinder liner-piston ring friction loss mainly focuses on improving the surface morphology of the cylinder liner, and the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/005
Inventor 王长驰任旭东周王凡任云鹏杨雪晴陈兰李琳
Owner JIANGSU UNIV
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