Method of removing rust from metallic objects

US4368080A · kind A · utility

Inventors

• Robert Langen · Bocholt, DE
• Rasmus Beck · Neu-Isenburg, DE

Key dates

• Filing date: Oct 27, 1980
• Grant date: Jan 11, 1983
• Expiry date: Oct 27, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K26/142
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Rust is removed from the surfaces of metallic objects by focusing a laser beam on successive increments of the surface so that the beam causes evaporation of rust. The laser is a gas laser and is designed to effect pulsed emission of coherent radiation. The output power of the laser is selected in such a way that the beam cannot melt or evaporate the parent metal.