B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
B24D 3/14 (2006.01) B23F 21/03 (2006.01) B24B 1/00 (2006.01) B24D 7/00 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2454829
An abrasive tool includes a superabrasive grain component, a filler component that comprises hollow bodies and a vitreous bond. Natural and synthetic diamond, cubic boron nitride and combinations thereof can be employed as the superabrasive grain component. The vitreous bond component includes zinc oxide and at least two alkali metal oxides. The vitreous bond component can further include barium oxide. A method for producing an abrasive tool includes combining a superabrasive grain component, a filler component that includes hollow bodies and a vitreous bond component that includes zinc oxide and at least two alkali metal oxides. The combined components are fired at a temperature in a range of between about 600 ~C and about 850 ~C, preferably in an ambient air atmosphere.
La présente invention concerne un outil abrasif comprenant un composant à grains superabrasifs, un composant de comblement qui comprend des corps creux et un liant vitreux. Comme composant à grains superabrasifs, on peut employer le diamant naturel ou synthétique, le nitrure de bore cubique ou certaines de leurs combinaisons. Le composant à liant vitreux comprend de l'oxyde de zinc et au moins deux oxydes de métaux alcalins. Le composant à liant vitreux peut en outre comporter de l'oxyde de baryum. L'invention concerne également un procédé de production d'un outil abrasif par lequel on combine un composant à grains superabrasifs, un composant de comblement qui comprend des corps creux et un liant vitreux qui comprend de l'oxyde de zinc et au moins deux oxydes de métaux alcalins. Les composants combinés subissent une cuisson dans une plage allant d'environ 600·C à environ 850·C, de préférence dans une atmosphère d'air ambiant.
Li Rounan
Pukaite Leonard G.
Gowling Lafleur Henderson Llp
Saint-Gobain Abrasives Inc.
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