Sandvik Intellectual Property Aktiebolag

Sandvik Intellectual Property Ab

Mathias Tillman

Susanne Norgren

Marianne Collin

Rickard Sandberg

Mats Waldenström

A cemented carbide cutting tool insert/button for mining and construction comprising hard constituents in a binder phase of Co and/or Ni and at least one surface portion and an interior portion in which surface portion the grain size is smaller than in the interior portion is disclosed. The surface portion with the smaller grain size has a lower binder phase content than the interior portion. A method to form the cemented carbide cutting tool insert/button is also disclosed.

Cemented carbide tools for mining and construction applications and method of making same

The present invention relates to a method of making tungsten carbide powder by dissolving at least one organic or inorganic metal salt or compound of at least one of the groups IV, V, and VI of the periodic system preferably Cr, V, Mo and W in at least one polar solvent. Powder of WOis added to the solution, the solvent is evaporated, the remaining powder is heat treated in reducing atmosphere, mixed with carbon and carburized.

Growing community of inventors

Hägersten, Sweden

Mathias Tillman