Method and apparatus for surface enhancement

US9050642B2 · kind B2 · utility

Assignee

• ORMOND, LLC · US

Inventors

• Daniel Alberts · Stade, DE
• Thomas J. Butler · Alpharetta, US
• Nicholas Cooksey · Seattle, US
• Daniel A. Woodward · Auburn, US

Key dates

• Filing date: Sep 27, 2012
• Grant date: Jun 9, 2015
• Expiry date: Nov 3, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D9/0018
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Systems and methods for generating beneficial residual stresses in a target material by generating cavitation shock waves through the use of a cavitation intensification conditioner. Shock waves emanate through the target material from collapsing cavitation voids in a liquid jet to generate residual stresses without significantly deforming the surface of the target material. A high pressure liquid is accelerated through a submerged peening nozzle to generate a high-speed liquid cavitating jet that is further intensified and controlled by use of the cavitation intensification conditioner.