Ultrasonic deep-rolling and tumbling integrated surface strengthening device

A surface strengthening and ultrasonic technology, applied in the field of metal surface strengthening, can solve problems such as scratches on the workpiece surface and shear stress that is unfavorable to fatigue resistance, and achieve the effects of reducing friction, ensuring adhesion, and avoiding residual shear stress

Inactive Publication Date: 2008-02-27
ACADEMY OF ARMORED FORCES ENG PLA
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  • Abstract
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Problems solved by technology

Its main disadvantage is that the tool head and the horn are fixed together, which will cause the tool head to produce sliding friction on the surface of the workpiece, which is likely to cause scratches on the surface of the workpiece, and at the same time cause shear stress on the subsurface of the workpiece that is not conducive to fatigue resistance

Method used

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  • Ultrasonic deep-rolling and tumbling integrated surface strengthening device

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Embodiment Construction

[0037] The following is a detailed description of the embodiments of the present invention:

[0038] 220V, 50Hz ordinary commercial power is connected to the ultrasonic generator 1 from the terminal 6, converted into ultrasonic electrical oscillation (18kHz ~ 30kHz) by the ultrasonic generator, and transmitted to the transducer 12 in the ultrasonic deep roller gun 2 through the cable 7, The transducer converts electrical vibration into mechanical vibration of the same frequency, and then amplifies it through the horn 13 and then hits the rolling pin 3 to impact the surface of the workpiece 4 . The horn contacts the rolling pins with the same diameter through the concave spherical surface 25 at its end, on the one hand, it keeps the rolling pins free to roll with low friction, and at the same time minimizes the energy loss of ultrasonic vibration. In the present invention, hard alloy balls with a diameter of φ6 to 12 mm are used as rolling pins, and ordinary GCr15 steel balls o...

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Abstract

The present invention discloses an ultrasonic deep-rolling and tumbling integrated surface-strengthening equipment. The utilization of said equipment can implement surface-strengthening treatment by using ultrasonic deep-rolling process and tumbling process. It is mainly characterized by that it utilizes ultrasonic vibration and independent rolling ball to reduce friction force and static pressure between tool head and workpiece surface so as to prevent surface scoring and structure deformation.

Description

1. Technical field [0001] The invention belongs to the technical field of metal surface strengthening, relates to ultrasonic impact, rolling and rolling technology, and is especially suitable for improving the fatigue resistance, surface quality and wear resistance of parts, and is suitable for aerospace, vehicles, ships, weapons Manufacturing and maintenance of equipment, etc. 2. Background technology [0002] The surface residual stress has a significant impact on the fatigue resistance and stress corrosion resistance of parts. Residual tensile stress often greatly reduces the fatigue resistance of parts, increases the sensitivity of parts to corrosion fatigue, and induces the initiation of stress corrosion cracks. Reducing the residual tensile stress on the material surface or introducing residual compressive stress can significantly improve the fatigue life of parts, reduce the sensitivity of parts to corrosion fatigue, and inhibit the initiation of stress corrosion cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/04C21D7/00
Inventor 朱有利李礼王侃黄元林吕光义叶雄林
Owner ACADEMY OF ARMORED FORCES ENG PLA
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