Jack M Beigay

US Patent:

43026583, Nov 24, 1981

Filed:

Sep 29, 1980

Appl. No.:

6/191972

Inventors:

Jack M. Beigay - Freeport PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

B23K 923
H01F 104

US Classification:

219137R

Abstract:

A process for improving the mechanical properties of welded silicon steel. The weld heat affected area of welded silicon steel is heat treated while retaining the welded lengths within a clamping fixture so as to restrain movement thereof from the initiation of welding through the completion of the heat treatment.

US Patent:

43816606, May 3, 1983

Filed:

Feb 9, 1981

Appl. No.:

6/232756

Inventors:

Jack M. Beigay - Freeport PA
Remus A. Lula - Natrona Heights PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

B21D 1100

US Classification:

72342

Abstract:

A method for preventing weld cracking of autogenous weldments of metastable stainless steel during deforming of the weld, as by stretching; this is achieved by cooling the weld with a pressurized CO. sub. 2 spray during the deforming operation.

US Patent:

45256209, Jun 25, 1985

Filed:

Sep 15, 1982

Appl. No.:

6/418315

Inventors:

Harry E. Deverell - Natrona Heights PA
Jack M. Beigay - Freeport PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

B23K 923

US Classification:

219137WM

Abstract:

A method of welding ferritic stainless steel to austenitic stainless steel to form a corrosion-resistant welded article having a stabilized weld joint is provided. The ferritic steel contains 17 to 35% chromium and a total carbon and nitrogen less than the total carbon and nitrogen of the austenitic steel containing 16 to 29% chromium. The weld is stabilized with up to 4% stabilizer selected from the group consisting of titanium and columbium, and at least 0. 5% stabilizer when the weld deposit contains at least about 22% chromium or at least 30% total of chromium and three times the molybdenum content, and at least 0. 8% stabilizer for less than about 22% chromium or less than about 30% total of chromium and three times the molybdenum content. The source of the stabilizer may be the ferritic steel or austenitic steel or a weld filler metal. A corrosion-resistant welded article produced by the method is also provided, such as a ferritic stainless steel tube and austenitic stainless steel tubesheet.