Abrasive wheels and methods for making and using same
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsDashi Nie, Shenglan Huang, Gaoxiang Gou
Life of this patent
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Abstract
A grinding tool includes a body having a first layer. The first layer can include bond material that is at least about 20 vol % of a total volume of the first layer. Additionally, the first layer can include abrasive particles contained within the bond material. In an embodiment, the abrasive particles include a first type of abrasive particle including black alumina with at least about 10 vol % of a total volume of the abrasive particles including black alumina. In some instances, the grinding tool can include a second layer that includes black alumina.
Claims20
A grinding tool comprising:
- a body having a first layer, the first layer including:
- a bond material that is at least about 20 vol % of a total volume of the first layer;
- a filler;
- and
- abrasive particles contained within the bond material, the abrasive particles including a first type of the abrasive particle including black alumina and a second type of abrasive particle including brown fused alumina, wherein at least about 10 vol % of a total volume of the abrasive particles includes black alumina.
A grinding tool comprising:
- a body including:
- a first layer including:
- about 25 vol % to about 33 vol % bond material for a total volume of the first layer, the bond material comprising about 20 vol % to about 30 vol % of a phenolic resin material for the total volume of the first layer and about 4 vol % to about 8 vol % of a filler for the total volume of the first layer;
- about 39 vol % to about 51 vol % abrasive particles for the total volume of the first layer, the abrasive particles comprising about 15 vol % to about 30 vol % black alumina abrasive particles for the total volume of the first layer and about 15 vol % to about 30 vol % brown fused alumina abrasive particles for the total volume of the first layer;
- and
- about 16 vol % to about 25 vol % porosity for the total volume of the first layer;
- a second layer including:
- about 22 vol % to about 30 vol % bond material for a total volume of the second layer, the bond material comprising about 14 vol % to about 27 vol % of a phenolic resin material for the total volume of the second layer and about 4 vol % to about 10 vol % of a filler for the total volume of the second layer;
- about 46 vol % to about 54 vol % abrasive particles for the total volume of the second layer, the abrasive particles consisting essentially of black alumina;
- and
- about 17 vol % to about 25 vol % porosity for the total volume of the second layer.
A grinding tool comprising:
- a body having a first layer, the first layer including:
- a bond material that is at least about 20 vol % of a total volume of the first layer;
- a filler;
- abrasive particles contained within the bond material, the abrasive particles including a first type of the abrasive particle including black alumina, wherein at least about 10 vol % of a total volume of the abrasive particles includes black alumina;
- and
- wherein the black alumina includes a FeTiO3 phase within a range of about 4 vol % to about 8 vol % of a total volume of the black alumina.
Dependencies are inferred from the claim text.