Bonded abrasive article and method of grinding
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsSrinivasan Ramanath, William H. Lane, Rachana Upadhyay, Michael P. Hitchiner
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Abstract
An abrasive article configured to grind a workpiece having a fracture toughness of at least about 5.5 MPa·m0.5 may include a body comprising abrasive particles contained within a bond material comprising a metal, wherein the body comprises a ratio of VAG/VBM of at least about 1.3, wherein VAG is a volume percent of abrasive particles within a total volume of the body and VBM is a volume percent of bond material within the total volume of the body, and wherein the abrasive particles have an average particle size of at least about 1 micron and not greater than about 20 microns.
Claims14
An abrasive wheel comprising:
- a bonded abrasive body comprising abrasive particles contained within a bond material, and
- a filler contained within the bond material,
- wherein the bond material comprises a metal alloy of tin and copper,
- wherein the metal alloy has a CSn/CCu ratio of not greater than about 0.65, where CSn represents a content of Sn in the metal alloy measure as a wt. % of the total weight of the metal alloy and CCu represents the content of Cu in the metal alloy measured as a wt. % of the total weight of the metal alloy,
- wherein the body comprises a ratio of VAG/VBM of at least 1.3, wherein VAG is a volume percent of abrasive particles within a total volume of the body and VBM is a volume percent of bond material within the total volume of the body,
- wherein the volume of abrasive particles within a total volume of the body is at least about 55 vol. %,
- wherein the abrasive particles have an average particle size of at least about 5 microns and not greater than about 15 microns,
- wherein the filler is present in an amount of at least 1 vol. % and not greater than about 10 vol. %,
- wherein the abrasive wheel is configured to grind a workpiece having a fracture toughness of at least about 5.5 MPa·m0.5,
- wherein the abrasive wheel is configured to provide a grinded root radius between threads of a workpiece,
- wherein the grinded root radius is not greater than about 0.002 inches,
- wherein the abrasive wheel comprises a ratio of wear rate (mm3/N) to flexural strength (MPa) of at least about 5, and
- wherein the abrasive wheel comprises a G-ratio of at least about 1200.
An abrasive wheel comprising:
- a bonded abrasive body comprising abrasive particles contained within a bond material, and
- a filler contained within the bond material,
- wherein the bond material comprises a metal alloy of tin and copper,
- wherein the metal alloy has a CSn/CCu ratio of not greater than about 0.65, where CSn represents a content of Sn in the metal alloy measure as a wt. % of the total weight of the metal alloy and CCu represents the content of Cu in the metal alloy measured as a wt. % of the total weight of the metal alloy,
- wherein the body comprises a ratio of VP/VBM of at least 1.5, wherein VP is a volume percent of particulate material including abrasive particles and fillers within a total volume of the body and VBM is a volume percent of bond material within the total volume of the body,
- wherein the abrasive wheel is configured to grind a workpiece having a fracture toughness of at least about 5.5 MPa·m0.5,
- wherein the abrasive wheel is configured to provide a grinded root radius between threads of a workpiece,
- wherein the grinded root radius is not greater than about 0.002 inches,
- wherein the volume of abrasive particles within a total volume of the body is at least about 55 vol. %,
- wherein the abrasive particles have an average particle size of at least about 5 microns and not greater than about 15 microns,
- wherein the filler is present in an amount of at least 1 wt. % and not greater than about 10 wt. %,
- wherein the abrasive wheel comprises a ratio of wear rate (mm3/N) to flexural strength (MPa) of at least about 5, and
- wherein the abrasive wheel comprises a G-ratio of at least about 1200.
Dependencies are inferred from the claim text.