Shot, devices, and installations for ultrasonic peening, and parts treated thereby

a technology of ultrasonic peening and ultrasonic peening chamber, which is applied in the field of ultrasonic peening shot, devices and installations, and parts treated thereby, can solve the problems that the use of such shot does not enable sufficient treatment intensity, and achieves the effects of reducing treatment time, reducing the angle of incidence of shot, and facilitating and accelerating the treatment of parts

Inactive Publication Date: 2006-02-02
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0037] Such a device makes it easier and quicker to treat parts that have projecting portions, which portions can be engaged in part in the sonotrode cavity, thereby reducing treatment time.
[0038] The path between the vibrating surface of the sonotrode and the treated part can be shortened and, for example, the

Problems solved by technology

The use of such shot does not enable treatment to be sufficiently intense on concave surfaces that

Method used

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  • Shot, devices, and installations for ultrasonic peening, and parts treated thereby
  • Shot, devices, and installations for ultrasonic peening, and parts treated thereby
  • Shot, devices, and installations for ultrasonic peening, and parts treated thereby

Examples

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Embodiment Construction

Shot

[0068] In one of its aspects, the invention relates to shot for use in a peening installation comprising a sonotrode that is set into vibration at ultrasound frequencies by a suitable generator. The shot may be characterized by hardness greater than or equal to 800 HV, density greater than or equal to 8 g / cm3, and pieces having a maximum dimension that is less than or equal to 1.5 mm.

[0069]FIG. 1 shows a piece of shot 1 satisfying this definition, and that is substantially spherical shape, with the above-mentioned maximum dimension corresponding to the diameter d of the sphere. Preferably, the tolerance on its sphericity is better than ±60 μm.

[0070] Its hardness is preferably greater than or equal to 1300 HV, and its density is preferably greater than or equal to 12 g / cm3.

[0071] By way of example, the shot 1 is made entirely out of tungsten carbide or any other material presenting the required hardness and density. The tungsten carbide includes a binder of cobalt or nickel,...

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Abstract

Shot for use in a peening installation, the shot having: hardness greater than or equal to 800 HV;
density greater than or equal to 8 g/cm3; and pieces having a maximum dimension less than or equal to 1.5 mm.

Description

[0001] This non provisional application claims the benefit of French Application No. 04 08493 filed on Jul. 30, 2004 and U.S. Provisional Application No. 60 / 599,364 filed on Aug. 6, 2004.[0002] The present invention relates to shot, devices, and installations for ultrasonic peening, and also to parts thus treated by peening. BACKGROUND [0003] Methods and installations for ultrasonic peening are described in particular in French patents FR 2 815 280 and FR 2 815 281, using at least one sonotrode comprising a titanium body for putting shot into motion for inducing compression stresses in the treated part. [0004] The following publications also relate to ultrasonic peening: U.S. Pat. No. 6,490,899 B2, U.S. Pat. No. 6,343,495 B1, U.S. Pat. No. 6,467,321 B2, U.S. Pat. No. 6,336,844 B1, U.S. Pat. No. 6,289,705 B1, U.S. Pat. No. 6,508,093 B2, US 2003 / 0115922 A1, U.S. Pat. No. 6,505,489 B2, and U.S. Pat. No. 6,536,109 B2. [0005] The shot used and described in the past in those patents mainl...

Claims

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Application Information

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IPC IPC(8): B21D31/06
CPCB24C5/005C21D7/06Y10S72/707Y10T29/479C21D10/00
Inventor CHEPPE, PATRICKDESFONTAINE, VINCENTDUCHAZEAUBENEIX, JEAN-MICHEL
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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