公开(公告)号：US20160318080A1

公开(公告)日：2016-11-03

申请号：US15108132

申请日：2013-12-24

Applicant: ARCELORMITTAL

Inventor： Christian Moretto ,  Nicolas Pethe ,  Audrey Couturier

IPC: B21B1/22

CPC classification number: B21B1/22 ,  B21B27/10 ,  B21B37/00 ,  B21B45/0251 ,  B21B2001/225 ,  B21B2265/12 ,  B21B2265/20 ,  B21B2275/04 ,  B21B2275/06

Abstract: A method for the regulation of at least one of the parameters (α) of a hot rolling process of a semi-finished metal product in at least one rolling mill stand having at least two work rolls is provided. The regulation method includes calculating a forward slip ratio (FWS) with the following equation: FWS = | v exit - v stand | v stand where vexit is the speed of the semi-finished product at the exit of the respective stand and vstand is the linear velocity of the work rolls; calculating an estimated coefficient of friction (μreal) as a function of a measured value of the screwdown force (F) of the work rolls in the stand and of the forward slip ratio (FWS); and regulating at least one of the parameters (α) based on the calculated estimated coefficient of friction (μreal).

Abstract translation: 其中，vexit是相应支架出口处半成品的速度，vstand是工作辊的线速度; 计算作为在工作台中的工作辊的减速力（F）的测量值和前进滑移率（FWS）的函数的估计摩擦系数（μreal）; 以及基于所计算的估计摩擦系数（μreal）来调节参数（α）中的至少一个。

公开(公告)号：US12036594B2

公开(公告)日：2024-07-16

申请号：US16626173

申请日：2017-06-26

Applicant: ArcelorMittal

Inventor： Ronan Jacolot ,  Didier Huin ,  Christian Moretto ,  Daniele Corsello

IPC: B21B37/76 ,  B21B45/02 ,  C21D1/84 ,  C21D8/02 ,  C21D9/46 ,  C21D11/00 ,  G01K13/04 ,  G01K17/08

CPC classification number: B21B37/76 ,  B21B45/0218 ,  C21D1/84 ,  C21D8/0263 ,  C21D9/46 ,  C21D11/005 ,  G01K13/04 ,  G01K17/08

Abstract: A method for determining the temperature of a metal strip (1) inside a cooling apparatus (4) of a hot rolling installation is implemented by an electronic device (12). This method includes acquiring a temperature measure of a strip portion at a current time instant; estimating, at the current time instant, a heat flux extracted from the strip portion inside the cooling apparatus according to a thermal model, and computing a strip portion temperature at a next time instant from the acquired temperature measure and the estimated extracted heat flux. The thermal model models an air cooling of the strip portion, a coolant header cooling of the strip portion by a coolant header and a remaining coolant cooling of the strip portion, wherein for the coolant header cooling the model models both an impingement cooling of the strip portion and a parallel flow cooling of the strip portion.