Method and device for prolonging service life of surface of friction pair of part

Abstract

The invention provides a method and device for prolonging the service life of the surface of a friction pair of a part. The method at least comprises the specific steps of laser micro-pit abrasive dust removal. Meanwhile, the corresponding device is provided, efficient removal of abrasive dust in a micro-pit is achieved through liquid nitrogen reaming, ultrasonic vibration, laser etching and electromagnetic adsorption, remanufacturing of the micro-pit can be realized through hollow laser melting and liquid nitrogen assisted ultrasonic peening, so that the service time of the laser micro-pit is effectively prolonged. The service time of the micro-pit can be effectively prolonged, and the anti-fatigue performance of the micro-pit can be improved.

Description

technical field [0001] The invention belongs to the field of laser surface engineering, and in particular relates to a method and a device for prolonging the service life of the surface of a friction pair of a part. Background technique [0002] The bionics research shows that compared with the smooth surface, the surface of the friction pair with a certain morphology and structure shows better tribological properties due to its ability to capture wear debris and store lubricant. Among the many surface micro-texturing processes, laser surface texturing technology has become an effective way to improve the tribological properties of materials due to its high production efficiency, high precision, strong controllability and no pollution. After the micro-pits are filled with wear debris, their positive effect will be weakened, and in the process of continuous collection of wear debris in the micro-pits, cracks are easily generated at the edges of the micro-pits, and as the crac...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the laser micro-pits are easy to block the micro-pits and the micro-pits are easy to produce cracks during the service process of the abrasive parts. The present invention provides a method for prolonging the service life of the friction pair surface of the parts. The specific method at least includes laser micro-pits removal of wear debris, and at the same time provides a corresponding device, which realizes efficient removal of wear debris inside the micro-pits through liquid nitrogen reaming, ultrasonic vibration, laser etching and electromagnetic adsorption, and can also be used Hollow laser melting and liquid nitrogen-assisted ultrasonic shock can realize the remanufacturing of micro-dimples, thus effectively prolonging the service time of laser micro-dimples

Images