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US 5,320,721 AGranted
Shaped-tube electrolytic polishing process
AssigneeCorning Incorporated
InventorW. Neil Peters
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a shaped-tube electrolytic polishing process which involves providing a workpiece with at least one hole. The hole is polished by advancing a metal tube electrode through the hole while passing an electrolyte through the tube and into the hole and while passing electric current between the metal tube and the workpiece through the electrolyte. As a result of such polishing, reduced surface roughness is imparted to the hole. It is particularly desirable to provide the hole in the workpiece by a shaped-tube electrolytic drilling process.
Claims20
A shaped-tube electrolytic polishing process comprising:
- providing a conductive workpiece with at least one hole and
- polishing the at least one hole by advancing a metal tube electrode through the hole while passing an electrolyte through the tube and into the hole and while passing electric current between the tube and the workpiece through the electrolyte, whereby said polishing deplates metal from the workpiece and imparts reduced surface roughness to the hole.
Dependencies are inferred from the claim text.