Method of embedding hard cutting particles in a surface of a cutting edge of cutting tools, particularly saw blades, drills and the like

US4488882A · kind A · utility

Inventors

• Friedrich Dausinger · Stuttgart, DE
• Werner Muller · Schwieberdingen, DE
• Eckart von Roda · Leonberg, DE
• Wilbert Reibetanz · Leinfelden, DE
• Otto Baumann · Echterdingen, DE

Key dates

• Filing date: Apr 22, 1983
• Grant date: Dec 18, 1984
• Expiry date: Apr 22, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23P15/28
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

To apply hard cutting particles, for example of tungsten carbide, on the surface of the cutting edge of a cutting tool, such as a saw blade, a drill, or the like, the cutting edge is partially melted by an energy beam, for example a laser beam, or an electron beam. A laser beam is preferred since, then, the process can be carried out in air, or in a protective gas atmosphere, rather than in a vacuum. The beam partially melts the cutting edge and the granules of the hard metal particles, preferably in a random grain size of between 0.3 to 1.5 mm is permitted to run down, over the partially melted surface, excess being collected for reuse; alternatively, the partially melted surface can be dipped into the granules, and permitted to solidify.