Method and device for laser ablation of a surface coating from a wall, such as a coat of paint in a nuclear plant

US8330073B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• François Champonnois · Les Ulis, FR
• Philippe Cormont · Le Bouscat, FR
• Marie Geleoc · Saclay, FR
• Christophe Hubert · Vernouillet, FR
• Christian Lascoutouna · Arpajon, FR
• Pierre-Yves Thro · Gif-sur-Yvette, FR
• Pascal Wodling · Orsay, FR

Key dates

• Filing date: May 18, 2006
• Grant date: Dec 11, 2012
• Expiry date: Jan 22, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2101/34
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention concerns a method for laser ablation of a surface coating from a wall, such as a painted wall finish, for example in a nuclear plant to be decontaminated, and a device for implementing said method. The inventive ablation method includes sweeping shots on the coating of at least one pulsed laser beam with a laser beam quality factor M2 less than 20, and characterized in that it comprises a direct control of said shots by optical deflection, such that the impact zones (I1, I2, I3,) of said shots on said coating are disjointed or substantially adjacent with minimized overlapping.