Friction mill for supporting surface flange

Application Number: 00126026
Application Date: 2000.08.24
Publication Number: 1285259
Publication Date: 2001.02.28
Priority Information: 1999/8/24 US 09/379917
International: B24C3/00
Applicant(s) Name: General Electric Co.
Inventor(s) Name: J.S. Schow
Patent Agency Code: 72001
Patent Agent: zhou beilin
Abstract A workpiece includes a surface adjoining an aperture. The aperture is filled with a plug to provide a step adjoining the surface. A stream of pliant shot in a carrier fluid is discharged at a shallow angle of incidence against the plug and directed toward the step for selective abrasion thereof.