Leo T Kaercher

US Patent:

48613940, Aug 29, 1989

Filed:

Sep 21, 1988

Appl. No.:

7/247148

Inventors:

Joseph F. Colin - Darlington PA
Leo T. Kaercher - Beaver Falls PA
Charles D. Roberts - Gibsonia PA

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

C21B 800

US Classification:

148153

Abstract:

Steel tubulars are deposited into an insulated container shortly after the steel tubulars are formed in a seamless hot rolling machine. The tubulars are covered by an insulating blanket and allowed to cool at a selected rate to form desired microstructure in the steel of the tubulars. No external energy supply or controls are necessary to achieve the desired microstructure. The side walls of the container taper outwardly and are made of a sandwiched structure, having spaced apart sheet metal members with a layer of insulation there between. The end walls are similarly constructed. The bottom of the container is lined with granular insulating material to cushion the shock of the tubulars being dropped into the container and to insulate the bottom of the container. Stainless steel mesh is used as a sling and embraces the tubulars to facilitate removing the tubulars from the container after the desired amount of cooling.

US Patent:

47983680, Jan 17, 1989

Filed:

Jul 30, 1987

Appl. No.:

7/079843

Inventors:

Joseph F. Colin - Darlington PA
Leo T. Kaercher - Beaver Falls PA
Charles D. Roberts - Gibsonia PA

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

C21D 908

US Classification:

266259

Abstract:

Steel tubulars are deposited into an insulated container shortly after the steel tubulars are formed in a seamless hot rolling machine. The tubulars are covered by an insulating blanket and allowed to cool at a selected rate to form desired microstructure in the steel of the tubulars. No external energy supply or controls are necessary to achieve the desired microstructure. The side walls of the container taper outwardly and are made of a sandwiched structure, having spaced apart sheet metal members with a layer of insulation there between. The end walls are similarly constructed. The bottom of the container is lined with granular insulating material to cushion the shock of the tubulars being dropped into the container and to insulate the bottom of the container. Stainless steel mesh is used as a sling and embraces the tubulars to facilitate removing the tubulars from the container after the desired amount of cooling.