公开(公告)号：US12246365B2

公开(公告)日：2025-03-11

申请号：US17479209

申请日：2021-09-20

Applicant: Primetals Technologies Austria GmbH

Inventor： Axel Rimnac ,  Roman Winkler

IPC: B21B1/46 ,  B22D11/16 ,  C21D1/18 ,  C21D8/02 ,  B21B15/00 ,  B21B45/02

Abstract: A combined casting and rolling installation and to a method for operating the combined casting and rolling installation. The combined casting and rolling installation comprises a rough-rolling mill train, a discharging device, a first transporting device, a quenching device, and at least one severing device. The rough-rolling mill train is configured to roll a continuously cast hot billet to form a rough-rolled strip. The discharging device is downstream of the rough-rolling mill train with respect to a conveying direction of the rough-rolled strip. The severing device is between the rough-rolling mill train and the discharging device and cuts up a first sub-portion of the rough-rolled strip into a rough-rolled strip piece. The discharging device discharges the rough-rolled strip piece. The first transporting device connects the severing device to the quenching device and transports the rough-rolled strip piece to the quenching device, which is configured to quench the rough-rolled strip piece.

公开(公告)号：US12209293B2

公开(公告)日：2025-01-28

申请号：US17414368

申请日：2019-12-16

Applicant: Primetals Technologies Austria GmbH

Inventor： Franz Hauzenberger ,  Robert Millner ,  Hanspeter Ofner ,  Norbert Rein ,  Gerald Rosenfellner ,  Johann Wurm

IPC: C21B13/00 ,  C21B13/12

Abstract: A method of direct reduction of metal oxides that includes catalytic reforming of hydrocarbonaceous gas in a reformer to obtain reformer gas, obtaining at least one precursor gas based on the reformer gas, preparing a reduction gas by heating the at least one precursor gas by means of electrical energy, at least a portion of the electrical energy being introduced by means of plasma.

公开(公告)号：US20250018457A1

公开(公告)日：2025-01-16

申请号：US18713301

申请日：2022-11-30

Applicant: Primetals Technologies Austria GmbH

Inventor： Roland Hofer ,  Lukas Pichler ,  Christoph Salzmann

IPC: B21D43/00

Abstract: A conveying device for conveying metal strip coils. The conveying device includes: at least one coil carrier to carry a metal strip coil; two conveying stations arranged at different heights and each designed to receive one coil carrier; and a conveyor track extending between the conveying stations and having a conveyor drive by means of which a coil carrier can be conveyed on the conveyor track between the conveying stations. Each conveying station is tiltable between a first end position in which the conveying station is oriented horizontally and a second end position, wherein the conveying station has an inclination in the second end position which corresponds to the inclination of the conveyor track and adjoins the conveyor track so that a coil carrier can be conveyed by means of the conveyor drive from the conveyor track into the conveying station and from the conveying station onto the conveyor track.

公开(公告)号：US20250010360A1

公开(公告)日：2025-01-09

申请号：US18705987

申请日：2022-10-19

Applicant: Primetals Technologies Austria GmbH

Inventor： Kerstin BAUMGARTNER ,  Heinz FÜRST ,  Simon GROSSEIBER ,  Thomas LENGAUER ,  Gero SCHWARZ

IPC: B22D11/124 ,  B21B3/02 ,  B22D11/00 ,  B22D11/14 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38

Abstract: A method for producing a dual-phase steel strip in a system having a finish-rolling train with a first stand group that includes at least one first finish-rolling stand, and a second stand group that includes at least one stand cooler. The system has a cooling section that includes a first cooling section group and a second cooling section group. Immediately following finish-rolling of a finish-rolled strip, the finish-rolled strip is fed to the second stand group, and force-cooled to a second exit temperature (TA2) so that upon exiting the second stand group the strip has a predominantly austenitic structure. Once the force-cooling stops, a ferritic and austenitic structure forms in the finish-rolled strip during transport. The finish-rolled strip is force-cooled to a fourth exit temperature (TA4) in the second cooling section group so that, upon exiting, the finish-rolled strip has a dual-phase structure composed of martensite and ferrite.

公开(公告)号：US20250001487A1

公开(公告)日：2025-01-02

申请号：US18292889

申请日：2022-07-27

Applicant: Primetals Technologies Austria GmbH

Inventor： Susanne HAHN ,  Rainer KALTSEIS ,  Axel RIESE

IPC: B22D11/16

Abstract: A method that allows quality-reducing defects to be detected before the cast product has left a casting plant by establishing a likelihood of defects in a cast product section with a multi-stage product section, the method including multi-step calculations performed in real time. In a first calculation step, at least changes in matrix phase proportions and an element concentration profile in phase regions are calculated in each case for a temperature-time step. The results of the first calculation step are fed to a second calculation step. In the second calculation step, a change in precipitation proportions out of at least one phase region is determined for the subsequent temperature-time step. The results of the second calculation step are used as input variables for the first calculation step. The results of the calculations are used to determine at least one defect index.

公开(公告)号：US20240327944A1

公开(公告)日：2024-10-03

申请号：US18411282

申请日：2024-01-12

Applicant: Primetals Technologies Austria GmbH

Inventor： Kerstin BAUMGARTNER ,  Simon GROSSEIBER ,  Axel RIMNAC ,  Gero SCHWARZ

IPC: C21D9/52 ,  B21B1/26 ,  B22D11/00 ,  B22D11/14 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC classification number: C21D9/52 ,  B21B1/26 ,  B22D11/001 ,  B22D11/141 ,  C21D1/18 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0221 ,  C21D8/0247 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005

Abstract: A process for production of a TRIP steel strip that includes



supplying a finished strip to a first cooling group of a cooling sector to force-cool the core of the finished strip to a second exit temperature (TA2) in the range 620° C. to 700° C., whereby, upon exiting the first cooling group, the core has a predominantly austenitic microstructure, transporting the finished strip to a third cooling group establishing, during the transport, a second cooling rate of the core of the finished strip in the range −25 K/s to 20 K/s to convert a first portion of the austenitic microstructure into a ferritic microstructure, force-cooling the core of the finished strip in the third cooling group to a third exit temperature (TA3) which is not more than the bainite starting temperature (BS) to at least partially convert a second portion of the austenite into a bainitic microstructure.

公开(公告)号：US20240263263A1

公开(公告)日：2024-08-08

申请号：US18566707

申请日：2022-05-20

Applicant: Primetals Technologies Austria GmbH ,  Primetals Technologies Germany GmbH

Inventor： Erich Opitz ,  Lukas Pichler ,  Axel Rimnac ,  Alois Seilinger ,  Albrecht Sieber ,  Klaus Weinzierl

IPC: C21D8/02 ,  B21B37/76

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.

公开(公告)号：US12042833B2

公开(公告)日：2024-07-23

申请号：US16346584

申请日：2017-10-12

Applicant: Primetals Technologies Austria GmbH

Inventor： Thomas Lengauer

IPC: B21B1/46 ,  B21B15/00 ,  B21B38/00 ,  B21B45/02 ,  B22D11/14 ,  B22D11/16 ,  B22D11/22 ,  B23P17/00

CPC classification number: B21B1/463 ,  B21B38/006 ,  B21B45/0233 ,  B22D11/141 ,  B22D11/16 ,  B22D11/225 ,  B23P17/00 ,  B21B2015/0057

Abstract: A method for operating a combined casting/rolling installation: A casting machine (4) of the combined installation (2) produces a cast product (40) and a rolling mill (6, 8) of the installation (2) produces a rolled product (42a, 42b) from the cast product (40). The installation (2) has a control device (12) with a measuring unit (14) and a controller (16). The measuring unit (14) detects a rolled-product property, generates a measurement signal dependent on that property and transmits the measurement signal to the controller (16), and the controller (16) uses the measurement signal to generate a control signal for the casting machine (4) based on a control algorithm and transmits the control signal to the casting machine (4) which uses the control signal to set a casting parameter. The detected rolled-product property is a temperature profile of the rolled product (42a, 42b) in the width direction thereof and the casting parameter that is set by the casting machine (4) using the control signal is a cooling parameter of the casting machine (4).

公开(公告)号：US11904371B2

公开(公告)日：2024-02-20

申请号：US17558786

申请日：2021-12-22

Applicant: Primetals Technologies Austria GmbH

Inventor： Matthias Bischoff ,  Roland Hofer ,  Mathias Neumüller ,  Pascal Ostheimer ,  Christoph Salzmann ,  Jan Schwinghammer

IPC: B21C47/04 ,  B65H19/28 ,  B21C47/34 ,  B21C47/06 ,  B65H18/08 ,  B65H20/02 ,  B21C47/02 ,  B65H18/02 ,  B65H18/10 ,  B65H18/26

CPC classification number: B21C47/04 ,  B21C47/02 ,  B21C47/06 ,  B21C47/063 ,  B21C47/34 ,  B21C47/3433 ,  B21C47/3441 ,  B65H18/08 ,  B65H19/28 ,  B65H20/02 ,  B65H18/10 ,  B65H18/26 ,  B65H2301/41427 ,  B65H2701/173

Abstract: A coiling device that includes a coiler (1) having a coiling mandrel (3) for coiling a metal strip, and a coiling swing arm (4) having front and a rear pressure rollers (5, 6) and a deflection plate (7). A swing arm drive (8) lines up the coiling swing arm (4) with the coiling mandrel (3) and is driven away from the coiling mandrel (3). An upper duct flap (9) upstream of the coiler (1) in the feed direction (x) guides the metal strip (2). A flap drive (10) positions the upper duct flap (9) such that, when the coiling swing arm (4) is lined up with the coiling mandrel (3), the upper duct flap is arranged between the coiling mandrel (3) and the front pressure roller (5) of the coiling swing arm (4) or is arranged upstream of the front pressure roller (5) of the coiling swing arm (4).

公开(公告)号：US11712725B2

公开(公告)日：2023-08-01

申请号：US17722436

申请日：2022-04-18

Applicant: Primetals Technologies Austria GmbH

Inventor： Thomas Lengauer ,  Bernd Linzer ,  Alois Seilinger ,  Michael Zahedi

IPC: B21B45/02 ,  B21B1/26 ,  B21B37/74 ,  B21B1/22 ,  B21B27/10

CPC classification number: B21B45/0218 ,  B21B45/0233 ,  B21B1/26 ,  B21B37/74 ,  B21B45/0251 ,  B21B2001/225 ,  B21B2027/103 ,  B21B2261/20

Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), in place of the work rolls (5) and their associated installation pieces (5a and 5b). The framework cooler (20) is sized to be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The cooler (20) includes a lower (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and includes 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). The bottom and top sides of the steel strip (50) may be cooled.