Bonded abrasive article and method of grinding

摘要

An abrasive article configured to grind a workpiece having a fracture toughness at least about 7 MPa·m0.5 includes 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 40 to 60 microns.

主权项

1. An abrasive article configured to grind a tungsten carbide workpiece, the workpiece having a fracture toughness at least about 7 MPa·m0.5, the abrasive article comprising:
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, wherein the abrasive particles have an average particle size in a range of between about 20 to about 60 microns; wherein during a periphery insert grinding test operation of the abrasive article on at least one edge of the tungsten carbide workpiece, the edge of the tungsten carbide workpiece has a maximum chip size of less than about 0.0025 inches and the maximum chip size is at least 8% less than the maximum chip size achieved during a periphery insert grinding test operation of a conventional metal-bonded abrasive article on the at least one edge of the tungsten carbide workpiece; and wherein the periphery insert grinding test operation is conducted at a rough feed rate of 2 inches/min and a finish feed rate of 1.0 inches/min with the abrasive article operating at 8500 SFPM and a cut depth of 0.025 inches.