Saint-gobain Abrasives, Inc.

Saint-gobain Abrasifs

Peter Caputa, Iv

Krishnamoorthy Subramanian

John A Webster

A method of producing a complex shape in a workpiece includes the steps of: i) grinding a workpiece at a maximum specific cutting energy of about 10 Hp/in&#xb7;min with at least one bonded abrasive tool, thereby forming a slot in the workpiece; and ii) grinding the slot with at least one mounted point tool, thereby producing the complex shape in the slot. The bonded abrasive tool includes at least about 3 volume % of a filamentary sol-gel alpha-alumina abrasive grain having an average length-to-cross-sectional-width ratio of greater than about 4:1 or an agglomerate thereof. A method of producing a slot in a metallic workpiece having a maximum hardness value of equal to, or less than, about 65 Rc includes the step of grinding the workpiece with a bonded abrasive tool at a material removal rate in a range of between about 0.25 in/min&#xb7;in and about 60 in/min&#xb7;in and at a maximum specific cutting energy of about 10 Hp/in&#xb7;min.

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Marlborough, MA, United States of America

Peter Caputa, Iv