Richard A Manzini

US Patent:

6337564, Jan 8, 2002

Filed:

Apr 13, 1999

Appl. No.:

09/290597

Inventors:

Richard A. Manzini - Greensburg PA
David H. De Young - Export PA

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

G01N 2700

US Classification:

324 714

Abstract:

Apparatus and method for providing a classification of inclusions in molten metal. The apparatus and method include the steps of and means for obtaining an analog signal stream from a data collection apparatus, passing the analog signal stream through an analog to digital converter to convert the analog signal stream to a digital signal stream, and partitioning the digital signal stream into a discrete time frame of 5 milliseconds. The digital signal stream is vector normalized to provide a normalized signal stream having a largest amplitude magnitude of 1. The normalized signal stream is compared to a control of a prototype shape for determining a classification for the digital signal stream over the discrete time frame by decision logic to determine hard inclusions versus soft inclusions in the liquid metal. In one aspect, the normalized signal stream is passed through a decision module having at least one threshold unit and at least one digital logic table to make a decision of a soft, deformable inclusion or a hard inclusion. In one embodiment, the classification and size of the inclusions are counted in an histogram of classification and a histogram of size.

US Patent:

53701712, Dec 6, 1994

Filed:

Sep 20, 1993

Appl. No.:

8/124387

Inventors:

James R. Fields - Export PA
Men G. Chu - Export PA
Lawrence W. Cisko - Irwin PA
C. Edward Eckert - Plum Borough PA
Thomas R. Hornack - Lower Burrell PA
Marshall A. Klingensmith - New Kensington PA
Richard A. Manzini - Greensburg PA
M. K. Premkumar - Monroeville PA
Gerald D. Scott - Messena NY
Mohammad A. Zaidi - Monroeville PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

B22D 1720
B22D 1730

US Classification:

164312

Abstract:

The die casting machine includes a trough containing a supply of molten metal and a feed tube extending into the supply of molten metal in the trough. A flow of molten metal is maintained in the trough past the feed tube independent of the transfer of molten metal through the feed tube. The die casting machine further includes a filtering system.

US Patent:

50763440, Dec 31, 1991

Filed:

Mar 7, 1989

Appl. No.:

7/320140

Inventors:

James R. Fields - Export PA
Men G. Chu - Export PA
Lawrence W. Cisko - Irwin PA
C. Edward Eckert - Plum Borough PA
George C. Full - Murrysville PA
Thomas R. Hornack - Lower Burrell PA
Thomas J. Kasun - Pittsburgh PA
Jerri F. McMichael - Pittsburgh PA
Richard A. Manzini - Greensburg PA
Janel M. Miller - Lower Burrell PA
M. K. Premkumar - Monroeville PA
Thomas J. Rodjom - Murrysville PA
Gerald D. Scott - Massena NY
William G. Truckner - Avonmore PA
Robert C. Wallace - New Kensington PA
Mohammad A. Zaidi - Monroeville PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

B22D 1808
B22D 1800

US Classification:

164457

Abstract:

This invention provides improved casting processes, equipment, and products. The invention is especially advantageous for die casting.