Treibacher Schleifmittel Gmbh

Treibacher Schleifmittel Ag

Wolfgang Bucar

Hans Zeiringer

Paul Moeltgen

Alessandro Dazza

An AlOand ZrObased abrasive grain containing titanium compounds in a reduced form, especially in the form of oxides and/or suboxides and/or carbides and/or oxycarbides and/or oxycarbonitrides and/or suicides, corresponding to a proportion of 0.510 wt. %, expressed as TiO, containing 20&#x2013;50 wt. % ZrO, wherein more than 75 wt. % of the ZrOis present in a tetragonal crystal form, having an overall carbon content of 0.03&#x2013;0.5 wt. %, a proportion of impurities caused by raw materials of less than 3.0 wt. %, wherein the rare earth content calculated in the form of oxides is less than 0.1 wt. %, having an Si-compound content of 0.05&#x2013;1.0 wt. %, expressed as SiO, and an AlOcontent of 50&#x2013;80 wt. %, obtained by melting a mixture required for a corresponding abrasive grain composition, said mixture corresponding to AlO, ZrO, TiOand TiO, and/or raw materials containing the latter in the presence of a surplus of a reducing agent and quenched in such a way that the melt is fully solidified in less than 10 seconds. The invention also relates to a method for the production thereof and the use thereof in abrasives.

[object Object]

The present invention relates to a method for producing an abrasive grain from a hard-material alloy based on titanium carbide, with alloying contributions from the group of carbides, nitrides, and/or borides from the secondary groups IVb, Vb, and VIb of the periodic system.

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Laufenburg, Germany

Wolfgang Bucar