公开(公告)号：US20160076119A1

公开(公告)日：2016-03-17

申请号：US14888821

申请日：2014-04-04

Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

Inventor： Bernd LINZER ,  Axel RIMNAC ,  Rainer BURGER ,  Robert LINSBOD ,  Josef MIKOTA

IPC: C21D11/00 ,  C21D8/02 ,  C21D9/54

CPC classification number: C21D11/00 ,  C21D1/54 ,  C21D8/0205 ,  C21D8/0226 ,  C21D9/54 ,  C21D9/56 ,  C21D9/562 ,  C21D11/005 ,  C21D2211/001 ,  C21D2211/005

Abstract: 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.

Abstract translation: 用于确定在加热之后或当在冶金系统中冷却钢带（2）时的铁素体相分数xa的方法。 另外，用于执行该方法的装置。 可以在线，快速且容易地确定钢带（2）中的铁素体相分数的方法包括测量钢带（2）的宽度w1和温度T1，其中钢带（2）包括 铁素体相分数xa1; 加热或冷却钢带（2）; 在加热钢带（2）时至少部分发生相变，a→y从铁素体状态a变为奥氏体状态y，当钢带冷却至少部分发生相变时，从奥氏体态y 进入铁素体状态a; 测量至少部分转化的钢带（2）的宽度w和温度T. 确定式（I）的铁素体相分数，其中T0是参考温度，aa和ay是铁素体和奥氏体的线性热膨胀系数。

公开(公告)号：US20190154164A1

公开(公告)日：2019-05-23

申请号：US16091393

申请日：2017-03-16

Applicant: Primetals Technologies Austria GmbH

Inventor： Gudrun MIKOTA ,  Josef MIKOTA

IPC: F16K31/00 ,  F16K27/02 ,  F16K31/08 ,  F16K31/10

Abstract: A hydraulic valve (3) includes an actuation device (1, la, lb) for a control piston (2). The valve (3) is simple, robust, and insensitive to dirt. The is an actuation device (1, 1a, 1b) has a flexurally rigid metal plate (5), with an outer region fixed to the housing (4) in a stationary manner. A piezoelectric actuator (6) can bend a central region of the metal plate (5); and a pressure chamber (7) is filled with a pressurized liquid during operation. The pressure chamber (7) is delimited by the housing (4), the metal plate (5), and the control piston (2). The metal plate (5) seals the pressure chamber (7), and the pressure chamber (7) acts on the control piston (2). A surface area AP of the metal plate (5) over the pressure chamber (7) is larger than the cross-sectional area AK of the control piston (2).