The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1981
Filed:
May. 09, 1979
Applicant:
Inventor:
Walter A Wilson, Pittsburgh, PA (US);
Assignee:
National Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148128 ; 148156 ; 148153 ; 432-8 ; 432 12 ; 432 24 ;
Abstract
Method and apparatus are disclosed for accurately controlling the temperature of a moving metal strip in a continuous heat treating operation. A plurality of temperature sensors are located at fixed intervals along the path of the metal strip through the heat treating apparatus, e.g., the cooling tunnel following an annealing oven, employed to control the application or extraction of heat and thereby the rate of temperature change of the strip. Errors in sensor readings are compensated by secondary averaging of adjacent temperature differential measurements to provide a more accurate temperature control.