Seco Tools Ab

Sandvik Intellectual Property Ab

Bo Jansson

Susanne Norgren

Jan Qvick

Tomas Persson

Peter Littecke

Jenni Zackrisson

Alexandra Kusoffsky

Per Jonsson

Nobom Gretta Hashe

Hans-Olof Andrén

Johannes Henoch Neethling

A method for manufacturing a cemented carbide body includes the steps of forming a first part of a first powder composition comprising a first carbide and a first binder phase, sintering the first part to full density in a first sintering operation, forming a second part of a second powder composition comprising a second carbide and a second binder phase, sintering the second part to full density in a second sintering operation, bringing a first surface of the first part and a second surface of the second part in contact, and joining the first and second surface in a heat treatment operation.

Cemented carbide body and method for manufacturing the cemented carbide body

A titanium based carbonitride alloy containing Ti, Nb, Ta, W, C, N and Co, contains:

Cermet

A method of making cutting tool inserts with high demands on dimensional accuracy includes:

Method of making cutting tool inserts with high demands on dimensional accuracy

A cemented carbide including WC, a binder phase based on Co, Ni or Fe, and gamma phase, in which said gamma phase has an average grain size &#x3c;1 &#x3bc;m. A method of making the cemented carbide is provided in which the powders forming gamma phase are added as mixed cubic carbides of one or more of Ti, Ta, Nb, Zr, Hf and V, and a ratio, f, between an amount of WC (in mol fraction of WC) and an equilibrium gamma phase WC content at a sintering temperature (in mol fraction WC) is given by f=x/xe, wherein fis 0.6 to 1.0.

Cemented carbide and method of making the same

There is disclosed a fine grained cutting tool insert consisting of a cemented carbide substrate and a coating. The cemented carbide substrate comprises WC, binder phase, and vanadium containing cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase.

Fine grained sintered cemented carbides containing a gradient zone

The present invention relates to a cutting tool insert for metal machining comprising tungsten carbide in a binder phase of tungsten or a tungsten alloy. The insert contains, in addition, WC in an amount such that in the x-ray diffraction pattern the peak ratio WC(101)/W(110) is &#x3c;0.3. This particular microstructure is obtained by an additional heat treatment at about 1200&#xb0; C. after the sintering.

Cutting tool

An improved method of making submicron cemented carbide bodies include wet milling powders of WC and Co and grain growth inhibitors to a slurry, drying the slurry to a powder, uniaxial pressing of the powder to form bodies of a desired shape, and sintering. WC powder is provided with an FSSS grain size, d , of less than 1 &mgr;m and a Co powder with an FSSS grain size, d , such that the ratio d /d is 0.75-1.5.

Growing community of inventors

Ramsberg, Sweden

Bo Jansson