公开(公告)号：US10722929B2

公开(公告)日：2020-07-28

申请号：US14768076

申请日：2014-02-07

Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

Inventor： Jian Chen ,  Sieglinde Ehgartner ,  Reinhard Karl ,  Erich Opitz ,  Florian Poeschl ,  Alois Seilinger ,  Thomas Trickl

IPC: B21B45/02 ,  C21D1/667

Abstract: To cool a metal strip (1), liquid coolant (5) is supplied to the strip by a supply device (9) from a feed line (10). A valve (13) in the feed line (10) sets the valve (13) to a respective opening position (s) for adjusting the coolant flow (F) to the metal strip (1) per unit of time. An upstream condition detection device (14) upstream of the valve device (13) in the feed line (10) detects an upstream condition (ZV) of the coolant (5). A control unit (6) determines a set point (s*) for an opening position (s) of the valve device (13) corresponding to the set point (F*) for the coolant flow (F) based on a set point (F*) for the coolant flow (F*), the upstream condition (ZV) of the coolant (5) and a valve characteristic (C) of the valve device (13). The valve characteristic (C) follows a characteristic curve (K) of the coolant flow (F) as a function of the opening position (s) of the valve device (13), relative to a reference condition (ZR) of the coolant (5) upstream of the valve device (13) in the feed line (10). The control unit (6) sets the opening position (s) of the valve device (13) according to the set point (s*) that has been determined.

公开(公告)号：US20200156130A1

公开(公告)日：2020-05-21

申请号：US16620896

申请日：2018-07-19

Applicant: Primetals Technologies Austria GmbH

Inventor： Thomas LENGAUER ,  Bernd LINZER ,  Alois SEILINGER ,  Michael ZAHEDI

IPC: B21B45/02

Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), the framework being in place of the work rolls (5) and the associated installation pieces (5a and 5b). For this purpose, the framework cooler (20) is sized such that it can be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The framework cooler (20) includes a lower water tank (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T) of the framework cooler (20). The lower and the upper water tanks (21b and 21a) can be thereby supplied with coolant by the respective connection (22). The bottom side of the steel strip (50) can be cooled by the cooling nozzles (23) or cooling tubes (23a) or the cooling slot (24) of the lower water tank (21b). The top side of the steel strip (50) can be cooled by the cooling nozzles (23) or cooling tubes (23a) or the cooling slot (24) of the upper water tank (21a).

公开(公告)号：US10655197B2

公开(公告)日：2020-05-19

申请号：US14888821

申请日：2014-04-04

Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

Inventor： Rainer Burger ,  Robert Linsbod ,  Bernd Linzer ,  Josef Mikota ,  Axel Rimnac

IPC: C21D11/00 ,  C21D9/56 ,  C21D1/54 ,  C21D8/02 ,  C21D9/54

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 xa 1 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.

公开(公告)号：US10508315B2

公开(公告)日：2019-12-17

申请号：US15328712

申请日：2015-08-04

Applicant: Primetals Technologies Austria GmbH

Inventor： Markus Abel ,  Hannes Beile ,  Markus Dorndorf ,  Alexander Müller ,  Ralf Pitz

IPC: C21C5/52 ,  C21C5/46 ,  F27B3/20 ,  F27B3/22 ,  F27D3/16 ,  F27D3/18 ,  F27D99/00

Abstract: A burner-lance unit (1) includes at least two gas connections (2a, 2b, 2c), a burner tube (3), and a lance tube (4) that is placed concentrically in the burner tube (3). The burner tube (3) and the lance tube (4) both have a gas inlet end and a gas outlet end (15). The lance tube (4) has a de Laval nozzle (4a) at the gas outlet end thereof. The de Laval nozzle (4a) is releasably connected to the lance tube (4). The burner tube (3) has a burner nozzle (3a) which is releasably connected to the burner tube (3).

公开(公告)号：US10464124B2

公开(公告)日：2019-11-05

申请号：US15522856

申请日：2015-10-27

Applicant: Primetals Technologies Austria GmbH

Inventor： Christian Enzinger ,  Daniel Fuchshuber ,  Christian Gruber ,  Franz Josef Hoechtel ,  Robert Hornbachner ,  Wolfgang Kibler ,  Nicole Oberschmidleitner ,  Michael Starrermair ,  Helmut Wahl

IPC: B22D11/128 ,  B22D11/20

Abstract: A method and a system for configuring a strand guiding system (8, 8a, 8b) of a continuous casting machine (2) and such a strand guiding system (8, 8a, 8b). A strand guiding segment (10g-r) guides a metal strand in the strand guiding system (8, 8a, 8b). The strand guiding system (8, 8a, 8b) has a plurality of strand guiding segments (10g-r) and respective control units (22g-r), wherein each control unit (22g-r) identifies its strand guiding segment (10g-r), and each control unit (22g-r) automatically depends on the strand guiding segments (10g-r) identified by the control unit (22g-r). The strand guiding system (8, 8a, 8b) and the strand guiding segment (10g-r) are prepared for the performance of the method herein disclosed.

公开(公告)号：US20190308238A1

公开(公告)日：2019-10-10

申请号：US16466313

申请日：2017-12-06

Applicant: Primetals Technologies Austria GmbH

Inventor： Paul Felix DOLLHÄUBL ,  Josef WATZINGER ,  Philipp WIESER

IPC: B22D11/20 ,  B22D11/18

Abstract: A method and a device for regulating a continuous casting system. The continuous casting system has a mold (1) and a strand guide (8) which is arranged downstream of the mold (1). Molten metal (3) is cast into the mold (1), in particular via an inlet device (4). The molten metal hardens on walls (1a) of the mold (1), such that a metal strand (7) with a hardened strand shell (5) and a still liquid core (6) is formed. The metal strand (7) is drawn out of the mold (1) by mutually spaced rollers (8b) of the strand guide (8), and a measurement variable is ascertained which correlates to the undulation of the casting level formed in the mold. The measurement variable is processed using at least one computing specification and is used to reduce the undulation of the casting level. In order to reduce the undulations of the casting level, the mutual spacing of opposing rollers (8b) of the strand guide is changed cyclically prior to the full hardening point (D).

公开(公告)号：US10366256B2

公开(公告)日：2019-07-30

申请号：US15525341

申请日：2015-09-10

Applicant: Primetals Technologies Austria GmbH

Inventor： Franz Hartl ,  Thomas Kuehas ,  Andreas Rohrhofer

IPC: G06K7/00 ,  G06K19/07 ,  G06K19/077 ,  H05K5/00 ,  H05K7/00

Abstract: A metallurgical vessel (2) having an outer surface (2a) and an identification tag (1, 1′, 1″) on the outer surface (2a). The tag has a carrier matrix (11) formed of an electrically and thermally insulating material. At least two passive transponders (3, 3a, 3b) are embedded in the carrier matrix (11). Within a metallurgical plant, a reading station (4) for tracking the path of the metallurgical vessel (2) is arranged at a tracking position. An antenna (5) of the reading station (4) initiates activation of the passive transponders (3, 3a, 3b), provided that the metallurgical vessel (2) is in a sensing range of the reading station (4). A reading unit (6) of the reading station (4) reads out the activated passive transponders (3, 3a, 3b) and transmits the result to an evaluating unit (7) of the reading station (4). The evaluating unit (7) determines which and/or how many of the passive transponders (3, 3a, 3b) were actually activated. The evaluating unit (7) thereafter associates a wear state with all the passive transponders (3, 3a, 3b) of the metallurgical vessel (2) as a whole.

公开(公告)号：US10307819B2

公开(公告)日：2019-06-04

申请号：US15129576

申请日：2015-01-27

Applicant: Primetals Technologies Austria GmbH

Inventor： Christian Brugger ,  Susanne Hahn ,  Jens Kluge ,  Hans-Peter Kogler ,  Johann Poeppl ,  Guoxin Shan ,  Susanne Tanzer ,  Heinrich Thoene ,  Franz Wimmer

IPC: B22D11/041 ,  B22D11/055 ,  B22D11/12 ,  B22D11/124 ,  B22D11/128 ,  B22D11/22

Abstract: A method for semi-continuous casting of a strand of steel in a strand casting machine and a strand casting machine that carries out the method, the method includes pouring liquid steel into a mold while closing off the mold by a bar to form a fully solidified strand start area followed by a partially solidified strand; extracting the partially solidified strand from the mold; supporting and guiding the partially solidified strand in the strand guide; at the end of the casting, ending the pouring of liquid steel into the mold and forming a strand end; extracting the strand end from the mold; ending the extraction of the strand end; ending the secondary cooling; providing controlled or regulated cooling of the partially solidified strand until full solidification of the strand; and discharging the strand from the strand casting machine.

公开(公告)号：US20190151919A1

公开(公告)日：2019-05-23

申请号：US16094911

申请日：2017-04-28

Applicant: Primetals Technologies Austria GmbH

Inventor： Matthias HOLZWEBER ,  Konrad KRIMPELSTAETTER

IPC: B21B37/44 ,  B21B27/10 ,  B21B37/32 ,  B21B45/02

Abstract: A method for rolling a product to be rolled (3), wherein the product (3) is fed through a rolling gap (11) between two working rollers (9, 10) of a roll stand (1) and a cooling lubricant is introduced into a contact zone (15, 16), in which a contact surface (17, 18) of the product to be rolled (3) lies against a working roller (9, 10), in order to lubricate the contact zone (15, 16). Furthermore, a lubrication demand of the contact zone (15, 16) is determined in accordance with at least one process parameter of the rolling process and an additional lubricant is applied to the contact surface (17, 18) of the product to be rolled (3) before the rolling gap (11) at a specified application distance (D) if a cooling lubricant amount (C) presently introduced into the contact zone (15, 16) does not cover the lubrication demand. The application distance (D) is sized such that adhesion of the additional lubricant to the contact surface (17, 18) is increased and the lubricating effect in the contact zone (15, 16) is improved in comparison with application immediately before the rolling gap (11). In addition, the lubricant amount (C) introduced into the contact zone (15, 16) is reduced if additional lubricant is applied to the contact surface (17, 18).

公开(公告)号：US10155262B2

公开(公告)日：2018-12-18

申请号：US15116479

申请日：2014-12-09

Applicant: Primetals Technologies Austria GmbH

Inventor： Kurt Dittenberger ,  Klemens Hauser ,  Daniel Lanzerstorfer

IPC: G01F1/00 ,  B22D11/124 ,  B22D11/22 ,  B22D46/00 ,  G01F9/00 ,  C21D11/00

Abstract: Monitoring of a line system (1) in which a liquid medium (3) is guided in a line (2). The current pressure of the liquid medium (3) in the line (2) and in the associated current flow are sensed at sensing times. The two values are fed to a computing unit (5). The computing unit (5) calculates a theoretical flow of the liquid medium (3) in the line (2) from the sensed current pressure by taking into account a specified flow function. The flow function describes a physical relationship between the theoretical flow of the liquid medium (3) and the current pressure of the liquid medium (3). The computing unit (5) determines an individual degree of clogging on the basis of the current flow and the theoretical flow. On the basis of a number of determined individual degrees of clogging and by using stochastic methods, the computing unit (5) calculates an interval within which a degree of clogging of the line system (1) lies with a probability to be defined. The line system (1) is monitored by using the size of the interval and/or the position of the interval with respect to first limits for the degree of clogging that are defined beforehand.