Raymond C Miller

US Patent:

6723221, Apr 20, 2004

Filed:

Jul 18, 2001

Appl. No.:

09/908253

Inventors:

Thomas R. Hornack - Lower Burrell PA
Raymond Miller - Lower Burrell PA
Robert L. Kozarek - Apollo PA

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C25C 300

US Classification:

205367, 205372, 205396, 204225, 2042431, 204245, 204279

Abstract:

Insulation assemblies provide reduced heat loss from electrolytic metal production cells such as inert anode aluminum production cells. The insulation assemblies may be located at the end, side and/or center aisles of the cell, and may be supported by the anodes and deckplate of the cell. The assemblies reduce heat loss and bath vaporization losses, and permit stable operation of the inert anode cell.

US Patent:

50203509, Jun 4, 1991

Filed:

Jun 19, 1989

Appl. No.:

7/368284

Inventors:

James E. Knepp - Plum Borough PA
Robert E. Welsh - Mount Lebanon PA
James A. Miller - Washington Township, Armstrong County PA
Raymond Miller - Lower Burrell PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

B21D 2220
B21D 3716
B21D 3718

US Classification:

72 45

Abstract:

The invention includes apparatus and method for lubricating and cooling a workpiece, dies or ironing rings, and punch at the interface between the workpiece and such dies or ironing rings and punch in forming a workpiece into a hollow closed end cylindrical article. A lubricant liquid phase is injected into a coolant liquid phase to form a "dispersion" prior to application to the metal-tool interface. Providing the lubricant as a dispersion in the coolant liquid phase rather than as an emulsion provides several advantages. The quantity of lubricant and the time of lubricant injection can be varied to control lubricity and, thus, friction. The invention makes it possible to achieve differential friction in the ironing process by having higher lubricity on the ironing die (low friction) and lower lubricity on the punch surface (high friction). Lubricities and cooling are controllable for the specific metal forming process employed to produce closed end hollow body containers. After applicaiton, the lubricant and coolant are separated, the lubricant filtered to remove debris, stored, and then reinjected to provide lubrication for the process.