Metal component hole wall surface nanocrystallization device

Abstract

The invention relates to a metal component hole wall surface nanocrystallization device. The metal component hole wall surface nanocrystallization device is characterized by comprising an ultrasonic transduction system and a metal component hole wall impactor; the ultrasonic transduction system is in drive connection with the metal component hole wall impactor, so that the radial movement of the metal component hole wall impactor perpendicular to the hole wall direction of a metal component to be treated is realized, the movement is reliable, the structure is simple, the manufacturing is simple, and the cost is low; and oil pressure in an oil cylinder is controlled through a hydraulic pump, and then a tungsten carbide ball head on an impact rod is controlled through a piston rod to press the normal pressure on the surface of the hole wall of the metal component, so that the surface of the hole wall is strengthened, the energy consumption is low, and no pollution is caused to the environment. According to the metal component hole wall surface nanocrystallization device, a sleeve, the hole wall impactor, the piston rod and the metal component are a matched modular structure, and thedevice is high in universality, can adapt to the surface treatment of inclined holes with different pore diameters and different directions of the metal component, wide in application range and suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of metal surface engineering, in particular to a nanometerization device for hole wall surfaces of metal components. Background technique [0002] High-strength steel is widely used in mechanical structures in aviation, aerospace, high-speed rail and other fields. Although high-strength steel has high strength, it is also more sensitive to stress concentration. Due to the need for mechanical connection, it is often necessary to open holes in the components. The hole is the stress concentration part of the whole component, and the fatigue failure of the component often occurs from the position of the hole, which leads to the scrapping of the whole component. In other words, the fatigue life of the hole often determines the service life of the entire component. Therefore, strengthening the surface of the hole wall can effectively improve the mechanical properties of the component with holes and increase the service l...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a nanometerization device for the surface of the hole wall of the metal component, which can solve the problem that the surface of the hole wall of the metal component is greatly restricted by the hole diameter by using the commonly used mechanical shot peening and laser impact strengthening.

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