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公开(公告)号：US12090533B2
公开(公告)日：2024-09-17
申请号：US17425467
申请日：2019-12-26
发明人： Ken Kurisu , Kentaro Ishii , Kazuma Takeuchi
CPC分类号： B21B1/28 , B21B27/10 , C21D8/0236 , C21D9/46 , B21B2001/221 , B21B2027/103
摘要： Provided is a method for rolling a steel sheet and a method for manufacturing a steel sheet capable of preventing occurrence of defects in appearance of a steel sheet caused by oil spots of a coolant and preventing occurrence of defects in shape of a steel sheet by appropriately controlling thermal deformation of work rolls. The method for rolling a steel sheet according to the present invention is a method for rolling a steel sheet involving feeding of a coolant to rolls that form a rolling mill during the rolling. The method includes keeping a coolant feeding rate at or lower than a predetermined rate lower than an upper constant rate at a start of operation of the rolling mill, and increasing the coolant feeding rate to the upper constant rate in response to an amount of center buckles of the steel sheet reaching or exceeding an upper target value.
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公开(公告)号：US11850643B2
公开(公告)日：2023-12-26
申请号：US16951275
申请日：2020-11-18
发明人： Jonathan Dube , Guillaume Delehaye
IPC分类号： B21B45/02 , B21B3/00 , B21B31/08 , B21B27/10 , B21B1/40 , H01M4/04 , H01M10/052 , B21B29/00 , B21B27/02
CPC分类号： B21B3/00 , B21B1/40 , B21B27/10 , B21B29/00 , B21B31/08 , B21B45/0251 , H01M4/0435 , H01M10/052 , B21B2003/001 , B21B2027/022
摘要： A lamination lubricant dispensing unit for lubricating a working roller of a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film. The lubricant dispensing unit has a dispensing unit body defining a laterally extending wall; first and second side walls extending forwardly from the laterally extending wall; and a ledge connected to lower ends of the walls. The ledge extends forwardly from the laterally extending wall and extending between the side walls. The ledge and the walls define a recess having an opened side. The ledge has a front edge for abutting a lamination surface of the working roller. At least a portion of the ledge is an angled portion extending upward and rearward from the front edge toward the laterally extending wall. The dispensing unit body defines at least one lubricant passage having an outlet defined in the laterally extending wall.
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公开(公告)号：US11772142B2
公开(公告)日：2023-10-03
申请号：US17629190
申请日：2020-02-10
发明人： Noriki Fujita , Yukihiro Matsubara , Yu Nagai , Yoshimitsu Harada
CPC分类号： B21B45/0257 , B21B1/28 , B21B27/10
摘要： A rolling oil supply system is configured to supply rolling oil to a rolling stand selected from a plurality of rolling stands included in a tandem rolling mill, a first rolling oil supply system configured to circulate and supply rolling oil after removing wear powder generated by rolling, and a second rolling oil supply system configured to supply rolling oil containing the wear powder generated by rolling are provided. Mixed rolling oil in which the rolling oil supplied from the first rolling oil supply system and the rolling oil supplied from the second rolling oil supply system are mixed is supplied to selected fourth and fifth rolling stands.
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公开(公告)号：US11542567B2
公开(公告)日：2023-01-03
申请号：US16934168
申请日：2020-07-21
申请人： NUCOR CORPORATION
发明人： Tao Wang , Kishlay Mishra , Jeffery Edward Keffer
IPC分类号： C21D8/02 , C21D9/46 , B21B27/10 , B21B45/00 , B21B45/02 , B21B3/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/12 , C22C38/60 , C22C38/42
摘要： Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.
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公开(公告)号：US20220184680A1
公开(公告)日：2022-06-16
申请号：US17601688
申请日：2020-04-08
摘要： A process of cold rolling an aluminum product, e.g. a strip, which crosses at least one rolling stand, wherein a lubricant is applied to the strip close to said at least one rolling stand by means of a plurality of applying means, said lubricant comprising an emulsion of oil and water. A related rolling plant is also described.
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公开(公告)号：US11358195B2
公开(公告)日：2022-06-14
申请号：US16607399
申请日：2018-03-14
发明人： Erich Opitz , Lukas Pichler , Alois Seilinger
IPC分类号： B21B45/02 , B21B37/44 , B21B37/74 , B21B27/10 , B22D11/124
摘要： A cooling bar (1) for cooling rolled material (5) being moved in a transport direction (3) and in particular for reducing temperature differences in the temperature of the rolled material (5) transversely to the direction of transport (3). The cooling bar (1) has several full jet nozzles (11) by means of which a coolant beam of a coolant with an approximately constant jet diameter can be distributed to the rolling stock (5) in the direction of distribution (15). A cooling device has at least two cooling bars (1) of that type. The cooling bars extend transversely to a transport direction, one behind the other. Each cooling bar has a respective different pattern of jet nozzles and selection of applicable pattern of jet nozzles in their respective bars selectively cools the rolled material transversely to the transport direction.
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公开(公告)号：US20220088653A1
公开(公告)日：2022-03-24
申请号：US17425467
申请日：2019-12-26
发明人： Ken Kurisu , Kentaro Ishii , Kazuma Takeuchi
摘要： Provided is a method for rolling a steel sheet and a method for manufacturing a steel sheet capable of preventing occurrence of defects in appearance of a steel sheet caused by oil spots of a coolant and preventing occurrence of defects in shape of a steel sheet by appropriately controlling thermal deformation of work rolls. The method for rolling a steel sheet according to the present invention is a method for rolling a steel sheet involving feeding of a coolant to rolls that form a rolling mill during the rolling. The method includes keeping a coolant feeding rate at or lower than a predetermined rate lower than an upper constant rate at a start of operation of the rolling mill, and increasing the coolant feeding rate to the upper constant rate in response to an amount of center buckles of the steel sheet reaching or exceeding an upper target value.
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公开(公告)号：US10807134B2
公开(公告)日：2020-10-20
申请号：US15735266
申请日：2016-06-08
申请人： SMS group GmbH
发明人： Matthias Kipping , Ralf Seidel , Johannes Alken , Torsten Müller , Magnus Treude
摘要： A method and a device for controlling a parameter, for example the profile or the flatness, of a rolled stock in strip form. A cooling jacket that can be brought up to the roll and is designed to be variable in its effective length b in the circumferential direction of the roll is used as a final controlling element.
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公开(公告)号：US20200276624A1
公开(公告)日：2020-09-03
申请号：US16804071
申请日：2020-02-28
发明人： Dong LIU , Jianguo WANG , Yanhui YANG
摘要： A method for preparing an ultrafine-grained superalloy bar, the method including: 1) designing a rolling machine including two rollers and two guide plates, where each of the two rollers includes a first roller and a second roller; the first roller includes a first curve and the second roller includes a second curve; the first curve and the second curve form a generatrix of the two rollers; 2) disposing the two guide plates with two curved surfaces thereof opposite to each other; disposing the two rollers to be between the two guide plates; where the two rollers and the two guide plates form a deformation zone of the rolling machine; and 3) driving the two rollers to rotate around their central axes, heating and introducing a superalloy blank from a gap between two first rollers to the deformation zone of the rolling machine; advancing the superalloy blank towards two second rollers.
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公开(公告)号：US20200269296A1
公开(公告)日：2020-08-27
申请号：US16649872
申请日：2018-07-19
发明人： Martin BERGMANN , Gernot DIRISAMER , Gregor GERSTORFER , Roland KELLERMAYR , Konrad KRIMPELSTAETTER , Christoph PROELL
摘要： The invention relates to a rolling apparatus for rolling a rolled material, and to a method for operating the rolling apparatus. The rolling apparatus has two rolling stands, which each have two working rolls distanced from one another by a nip, through which the rolled material can be guided. In a first operating mode, a lubricant mixture, formed of a carrier gas and a lubricant, and coolant are applied to at least one working roll of a first rolling stand and/or to at least one rolled material surface of the rolled material. In a second operating mode, a skin pass agent is applied to at least one working roll of the first rolling stand, at least one working roll of the second rolling stand and/or at least one rolled material surface of the rolled material.
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