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公开(公告)号：US12049677B1
公开(公告)日：2024-07-30
申请号：US18566707
申请日：2022-05-20
Inventor： Erich Opitz , Lukas Pichler , Axel Rimnac , Alois Seilinger , Albrecht Sieber , Klaus Weinzierl
CPC classification number: C21D8/0263 , B21B37/76 , C21D8/0226 , B21B2261/20
Abstract: A method for cooling a rolled product in a cooling section which is located upstream of a finishing train of a hot rolling mill. The cooling section includes a cooling device which can deliver a coolant flow of a coolant onto a rolled product surface of the rolled product. In the method, a coolant flow is delivered, by means of each cooling device and in each cooling section pass, onto the rolled product surface, which flow is set to a set value that is assigned to the relevant cooling device for the cooling section pass. The set values for a cooling section pass are determined in a simulation of the cooling section pass so that surface temperatures, determined in the simulation, of the rolled product surface upon leaving active regions of the cooling device do not exceed a minimum value for a surface temperature of the rolled product surface.
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公开(公告)号：US12030687B2
公开(公告)日：2024-07-09
申请号：US17760619
申请日：2020-09-09
Applicant: Primetals Technologies Germany GmbH
Inventor： Martin Königshofer , Ralf Smukalski
IPC: B65B69/00
CPC classification number: B65B69/0025
Abstract: Coil has been produced by coiling of a strip. The coil has two end faces and a lateral surface, and also a coil eye having an eye axis. The binding bands have a binding band width. Initially, while a first subregion of the lateral surface of the coil, as seen in the direction of the eye axis, is resting on a first rest, those binding bands which, as seen in the direction of the eye axis, surround the coil completely outside the first subregion are removed. Then, while a second subregion of the coil, as seen in the direction of the eye axis, is resting on the first rest or a second rest, those binding bands which were not removed are removed. The first and the second subregion, as seen in the direction of the eye axis, are spaced apart from one another at least by the binding band width.
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公开(公告)号：US11919059B2
公开(公告)日：2024-03-05
申请号：US17310246
申请日：2020-01-13
Applicant: Primetals Technologies Germany GmbH
Inventor： Johannes Dagner
CPC classification number: B21B13/142 , B21B1/22 , B21B27/021 , B21B2001/225 , B21B2027/022 , B21B2267/18 , B21B2267/24
Abstract: The present invention relates to a method and an apparatus for changing the effective contour of a running surface (8) of a working roller (3, 4) during the hot rolling of rolling stock in a roll stand (2) to form a rolled strip (1). The intention is to be able to change the contour of the running surface (8) during the hot rolling by means of the invention. This object is achieved according to the invention by the axial displacement of the working rollers (3, 4) in opposite directions by a displacement distance s, wherein s is greater or less than
Δ
r
tan
(
α
)
and Δr indicates the wear of the running surface (8) in the radial direction (R) and α indicates the pitch angle of the conical portion (7) of the respective working roller (3, 4).-
公开(公告)号：US20230204291A1
公开(公告)日：2023-06-29
申请号：US17915382
申请日：2021-03-31
Applicant: Primetals Technologies Germany GmbH
Inventor： Jürgen HUBER , Thierry Koeger , Alexander Mueller-Mathis
Abstract: A method (100) and a system (1) for compensating for an electrode (2) burn-off in an arc furnace (3) in which at least a part of the electrode (2) held in a first retaining position (H1) by a retaining device (4) is detected (Si) with the aid of a sensor device (5) and a second retaining position (H2) is determined (S2) on the basis of data generated during the detection. The retaining device (4) can then be repositioned (S4) relative to the electrode (2) from the first retaining position (H1) to the determined second retaining position (H2).
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公开(公告)号：US20210354182A1
公开(公告)日：2021-11-18
申请号：US17274212
申请日：2019-07-30
Applicant: Primetals Technologies Germany GmbH
Inventor： Klaus WEINZIERL
Abstract: A cooling section (2) is situated in a rolling line or upstream or downstream of the rolling line. A hot metal rolled material (1) is cooled in the cooling section. A control device (13) of the cooling section (2) dynamically determines setpoint actuation states (S1*) for control valves (10) situated in supply lines (8) and actuates the control valves (10) accordingly. Main flows (F1) of a liquid, water-based coolant (7) are supplied to application devices (6) of the cooling section (2) via the supply lines (8) in accordance with the actuation. The supply lines (8) conduct the main flows (F1) to buffer regions (12) of the application devices (6). Proceeding from there, cooling flows (F) of the coolant (7) are applied to the hot rolled material (1). The control device (13) also dynamically determines setpoint actuation states (S2*) for active devices (16) and actuates the active devices (16) accordingly. The active devices (16) conduct additional flows (F2) of a further medium (18) to the buffer regions (12) via further supply lines (17) in accordance with the actuation. The cooling flows (F) depend on both the main flows (F1) and the additional flows (F2). The additional flows (F2) are positive or negative depending on the actuation state (S2*) of the active devices (16). The control device (13) adjusts the additional flows (F2) by correspondingly actuating the active devices (16) such that the cooling flows (F) are as identical as possible to setpoint flows (F*) of the coolant (7) at all times.
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Patent Agency Ranking
公开(公告)号：US20210268561A1
公开(公告)日：2021-09-02
申请号：US17276609
申请日：2019-09-19
Applicant: Primetals Technologies Germany GmbH
Inventor： Klaus Loehe
Abstract: A control device of the rolling mill line controls actuators of a downstream and an upstream roll stand. The control device determines control variables for the actuators of the upstream roll stand while taking into consideration a flatness change to be carried out and additionally taking into consideration a contour change to be carried out and controls the actuators of the upstream roll stand accordingly. The control device determines control variables for the actuators of the downstream roll stand while taking into consideration the contour change to be performed but without taking into consideration the flatness change to be performed and controls the actuators of the downstream roll stand accordingly. The control device outputs the control variables to the actuators of the downstream roll stand with a delay of a transport time, relative to the corresponding control variables for the actuators of the upstream roll stand.
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公开(公告)号：US20210213499A1
公开(公告)日：2021-07-15
申请号：US17270904
申请日：2019-07-30
Applicant: Primetals Technologies Germany GmbH
Inventor： Emmeran SOLLNER
Abstract: Hot rolling stock (1) made of metal which is rolled in at least one roll stand (2) and then cooled in a cooling section (5) arranged downstream of the at least one roll stand (2). Sound generated by means of a sound generator arrangement (8) is coupled into the rolling stock (1) by a coupling device (1) so that a standing sound wave is formed at least in the region of the rolling stock (1) which is located in the vicinity of the coupling device (10).
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公开(公告)号：US10994318B2
公开(公告)日：2021-05-04
申请号：US15538017
申请日：2014-12-30
Applicant: Primetals Technologies Germany GmbH
Inventor： Paul Barry Riches
Abstract: A pinch roll delivers a respective rolled product. A control device opens the pinch roll at a respective trigger time and at a respective transport speed of the respective rolled product. The control device determines the respective trigger time and/or the respective transport speed using a model that depends on a coefficient of friction. After opening the pinch roll, a measuring device detects iteratively a position or a derivation in time of the position of the respective rolled product. The detected positions or the detected derivations in time of the position are provided to the control device. The control device in dependency on the positions or the derivations in time of the position updates the coefficient of friction and uses the updated coefficient of friction for determining the respective trigger time and/or the respective transport speed for the next rolled product delivered by the pinch roll.
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公开(公告)号：US20200331046A1
公开(公告)日：2020-10-22
申请号：US16463432
申请日：2017-11-28
Inventor： Christian LEHNER , Erich OPITZ , Lukas PICHLER , Florian POESCHL , Alois SEILINGER , Klaus WEINZIERL
Abstract: A cooling system (2) for cooling metal rolling stock. A plurality of cooling bars (8) for applying a coolant onto the rolling stock, one dedicated coolant supply line (36) for each cooling bar (8), and a feed system (9) for guiding the coolant to the coolant supply lines (36). Each cooling bar (8) is connected to the feed system (9) via a dedicated coolant supply line (36). A bypass line (48, 52) for discharging a coolant flow from the feed system (9), is connected on the input side to a connection element (51, 53) of the feed system (9).
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公开(公告)号：US10782205B2
公开(公告)日：2020-09-22
申请号：US16071996
申请日：2016-12-02
Applicant: Primetals Technologies Germany GmbH
Inventor： Ilhom Gafur , Andreas Lorenz
IPC: G01M3/26 , G01M13/005 , G01M3/04 , G01M3/00 , G01M3/32 , G01M3/28 , G01M3/18 , F16L23/16 , G01M3/16 , F16L11/12 , F15B11/10 , F15B20/00 , F15B19/00
Abstract: A hydraulic cylinder unit (1) having a hydraulic cylinder (2), a piston (3) which can be moved in the hydraulic cylinder (2), and a servo valve (7). The piston (3) separates working volumes (5A, 5B) of the hydraulic cylinder unit (1) from one another. The servo valve (7) is connected to a hydraulic pump (8), a tank (9), and the working volumes (5A, 5B). The servo valve (7) is supplied with a pump pressure (pP) via the hydraulic pump (8). The tank (9) has a tank pressure (pT). The servo valve (7) is adjusted to a defined valve position (y). A piston position (z) of the piston (3) in the hydraulic cylinder (2) and working pressures (pA, pB) which are applied to the working volumes (5A, 5B) are detected. An analysis device (12) ascertains a leakage coefficient (ω) of the hydraulic cylinder unit (1) using the piston position (z), the working pressures (pA,pB), the valve position (y), the pump pressure (pP), and a value which represents the tank pressure (pT) in connection with time-invariant parameters of the hydraulic cylinder unit (1).
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