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:
May. 19, 2020
Filed:
Apr. 04, 2014
Primetals Technologies Austria Gmbh, Linz, AT;
Rainer Burger, Nuremberg, DE;
Robert Linsbod, Linz, AT;
Bernd Linzer, Sipachzell, AT;
Josef Mikota, Gallneukirchen, AT;
Axel Rimnac, Linz, AT;
Abstract
A method for determining the ferrite phase fraction xafter heating or when cooling a steel strip () in a metallurgic system. Also, a device for carrying out the method. A method by which the ferrite phase fraction in the steel strip () can be determined online, quickly and easily, includes measuring a width wand a temperature Tof the steel strip (), wherein the steel strip () comprises a ferrite phase fraction xduring the measurements; heating or cooling the steel strip (); when heating the steel strip () a phase conversion at least in part occurs, a→y from the ferrite state a into the austenitic state y and when cooling the steel strip a phase conversion at least in part occurs, from the austenitic state y into the ferrite state a; measuring of a width w and a temperature T of steel strip () converted at least in part; determining the ferrite phase fraction of the formula (I), wherein Tis a reference temperature and aand aare the linear heat expansion coefficients of ferrite and austenite.