Hilti Aktiengesellschaft

Steven Moseley

Udo Hauptmann

Matthaeus Hoop

Arno Glaser

Till Cramer

Klaus-Peter Bohn

Marcel Sonderegger

Roland Foser

Peter Mugg

Herbert Danninger

Cord-Henrik Surberg

Christian Gierl-Mayer

Wolf-Dieter Schubert

Jan Allaart

Thomas Britt

Michael Bischof

Siavash Momeni

Luis Fernando Garcia

Robert Hellein

Alfred Lammer

Edwin Schweizer

Rainer Batliner

Andrea Müller-Grunz

József Szabó

Ralph Useldinger

Jolanta Janczak-Rusch

Lars Jeurgens

Günther Domani

Jens Stracke

Thorsten Klein

Christian Gierl-mayer

Adriana De Andrade Molero

Frank Moszner

A tool for machining materials has a main part and one or more blades. The main part is made of a low-alloy steel. The socket is welded to the main part, and the blade edges are made of a hard metal. The hard metal contains at least 82 vol. % of tungsten carbide and a metallic binder made of a cobalt-nickel-based alloy. The hardness of the hard metal is greater than 1350 HV10. The socket has a sintered composite, and 40 vol. % to 60 vol. % of the composite is composed of a metal carbide and a metallic binder. At least 95 vol. % of the metallic binder is made of nickel, and the hardness of the composite is less than 800 HV10.

Tool

A drill includes a drill bit, an intermediate part, and a shaft. The drill bit is made from a sintered carbon-containing hard metal. The intermediate part is made from steel and arranged along an axis between the drill bit and the shaft. An activity of carbon in the steel of the intermediate part is greater at a temperature ranging from 1100&#xb0; C. to 1450&#xb0; C. than an activity of carbon in the sintered hard metal at the temperature.

Drill and a production method for a drill

A drill having a drill head () made of hard metal and a shaft () or a coupling piece () made of a sintered iron alloy. The hard metal is joined in the form of a material connection to the sintered iron alloy by a sintering process.

Drill production method

A segmental hard material insert for a working tool has a planar polycrystalline diamond layer () having, in its layer plane, a main cutting element () and a contact edge () located opposite the main cutting element, with the main cutting element () having two, facing outwardly, convex cutting sections () and a smooth, facing outwardly, concave transitional region () connecting the two convex cutting sections (), and with the apex () of the transitional region () being located on a central line of the main cutting element ().

Hard material insert and core bit

A rock drill including a drill stem (,), major cutting edges (,) extending substantially over a diameter of the drill stem (,) and projecting beyond the end face (,) of the drill stem, and at least one minor cutting edge (,) extending substantially in a radial direction and provided on at least one elongate cutting body (,) which projects beyond the end face (,), with the minor cutting edge (,) being located, at a contemplated rotational direction (R) of the drill (,) about the drill axis (A), in front of a corresponding major cutting edge (,) adjacent to a main discharge groove (,) for drilling dust, and with the elongate cutting body (,) having a cutting surface (,) tapering from the minor cutting edge (,) toward the end face (,) of the drill stem (,) and having at least one inclination surface (,) adjacent to the circumference of the drill stem (,) and inclined toward the circumference of the drill stem and with respect to a radial extension of the minor cutting edge (,), in a direction opposite the drill rotational direction (R).

Rock drill

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Nenzing-Gurtis, Austria

Steven Moseley