发明名称 |
DETERMINING THE FERRITE PHASE FRACTION AFTER HEATING OR COOLING OF A STEEL STRIP |
摘要 |
A method for determining the ferrite phase fraction xa after heating or when cooling a steel strip (2) in a metallurgic system. Also, a device for carrying out the method. A method by which the ferrite phase fraction in the steel strip (2) can be determined online, quickly and easily, includes measuring a width w1 and a temperature T1 of the steel strip (2), wherein the steel strip (2) comprises a ferrite phase fraction xa1 during the measurements; heating or cooling the steel strip (2); when heating the steel strip (2) 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 (2) converted at least in part; determining the ferrite phase fraction of the formula (I), wherein T0 is a reference temperature and aa and ay are the linear heat expansion coefficients of ferrite and austenite. |
申请公布号 |
EP2992117(A1) |
申请公布日期 |
2016.03.09 |
申请号 |
EP20140718355 |
申请日期 |
2014.04.04 |
申请人 |
PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
发明人 |
LINZER, BERND;RIMNAC, AXEL;BURGER, RAINER;LINSBOD, ROBERT;MIKOTA, JOSEF |
分类号 |
C21D9/56;B21B37/16;B21B37/74;B21B37/76;C21D1/54;C21D8/02;C21D11/00;G05D5/00;G05D23/00 |
主分类号 |
C21D9/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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