Black Decker Inc.

Plansee Tizit Aktiengesellschaft

Plansee Tizit

Werner Ferstl

Hans-Peter Martinz

Ronald Huber

Andreas Lackner

Rudi Birk

Gerhard Knunz

Klaus Prandini

Walter Lempach

The invention concerns the use of a WC&mdash;Co cutting metal alloy for a component or a tool insert, which is shaped from a corresponding cutting metal blank by means of an electrical discharge processing method. The WC fraction in the carbide phase of the cutting metal alloy is more than 90 wt %; the binder phase consists mostly of cobalt and is 8 to 15 wt % with reference to the cutting metal alloy. 0.1 to 3 wt % of one or more metals from the group Re, Ge, Ga, Ir, Os, Pd, Ag, Au, Pt, Te, Sb, Rh, and Ru, with reference to the binder phase, are dissolved in the binder phase.

Cutting metal alloy for shaping by electrical discharge machining methods

A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.

Drill bit

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Reutte, Austria

Werner Ferstl