公开(公告)号：US12090535B2

公开(公告)日：2024-09-17

申请号：US17599088

申请日：2020-03-04

申请人： Primetals Technologies Austria GmbH

发明人： Thomas Lengauer ,  Bernd Linzer ,  Michael Zahedi

IPC分类号： B21B45/00 ,  B21B1/02 ,  B21B1/04 ,  C21D1/42 ,  C21D9/60

CPC分类号： B21B45/004 ,  B21B1/026 ,  B21B1/04 ,  C21D1/42 ,  C21D9/60

摘要： A heating device and a method for the inductive heating of a flat steel strip in a hot rolling mill. The heating device is between two rolling trains of the hot rolling mill and the flat steel strip runs at a speed through the heating device in a transporting direction. The heating device includes: transverse-field modules arranged one after the other along the transporting direction of the flat steel strip; longitudinal-field modules arranged one after the other along the transporting direction of the flat steel strip and arranged before or after the transverse-field modules along the transporting direction; a first power supply supplying at least one transverse-field module with a first alternating voltage; and a second power supply supplying at least one longitudinal-field module with a second alternating voltage. The power supplies have a converter and an electrically connected capacitor bank with multiple capacitors connected in parallel.

公开(公告)号：US20220193741A1

公开(公告)日：2022-06-23

申请号：US17599088

申请日：2020-03-04

申请人： Primetals Technologies Austria GmbH

发明人： Thomas Lengauer ,  Bernd Linzer ,  Michael Zahedi

IPC分类号： B21B45/00 ,  B21B1/02 ,  B21B1/04

摘要： A heating device and a method for the inductive heating of a flat steel strip in a hot rolling mill. The heating device is between two rolling trains of the hot rolling mill and the flat steel strip runs at a speed through the heating device in a transporting direction. The heating device includes: transverse-field modules arranged one after the other along the transporting direction of the flat steel strip; longitudinal-field modules arranged one after the other along the transporting direction of the flat steel strip and arranged before or after the transverse-field modules along the transporting direction; a first power supply supplying at least one transverse-field module with a first alternating voltage; and a second power supply supplying at least one longitudinal-field module with a second alternating voltage. The power supplies have a converter and an electrically connected capacitor bank with multiple capacitors connected in parallel.

公开(公告)号：US20220010396A1

公开(公告)日：2022-01-13

申请号：US17283476

申请日：2019-10-21

申请人： NIPPON STEEL CORPORATION

发明人： Tatsuo YOKOI ,  Teruki HAYASHIDA ,  Mutsumi SAKAKIBARA ,  Jun ANDO ,  Shinsuke KAI ,  Hiroshi SHUTO

IPC分类号： C21D9/46 ,  B21B1/02 ,  C22C38/58 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C23G1/08

摘要： This hot-rolled steel sheet has a predetermined chemical composition, and in a case where the thickness is denoted by t, the metallographic structure at a t/4 position from the surface contains one or both of tempered martensite and lower bainite at a volume percentage of 90% or more, the tensile strength is 980 MPa or more, and the average Ni concentration on the surface is 7.0% or more.

公开(公告)号：US11185943B2

公开(公告)日：2021-11-30

申请号：US16461910

申请日：2017-11-16

申请人： SMS Group GmbH

发明人： Thomas Runkel ,  Jochen Wans ,  Axel Weyer

IPC分类号： B21B1/22 ,  B32B15/01 ,  B21D39/03 ,  B21B1/26 ,  B21B1/02 ,  B22D11/14 ,  B22D11/16 ,  C21D8/02 ,  C21D9/56 ,  C21D9/60 ,  B21B1/46 ,  B21B1/04 ,  B23K20/26 ,  B23K20/04 ,  B23K103/04 ,  B21B1/38 ,  B23K101/16 ,  B21C47/22

摘要： A device and method for producing a continuous strip-shaped composite material including a base material of metal, which is unwound in the form of a metal strip by a first coil-unwinding apparatus, and at least one cladding material of metal, which is unwound in the form of a metal strip by a second coil-unwinding apparatus. The metal base and cladding metal strips unwound by the respective coil-unwinding apparatuses are brought together in the hot state of at least 720 degrees Celsius. The unwound base and cladding metal strips brought toward each other and are joined by hot-rolling such that a single continuous strip-shaped composite material is thereby formed by roll cladding such that the composite material includes the base material and the cladding material.

公开(公告)号：US20210365008A1

公开(公告)日：2021-11-25

申请号：US17318296

申请日：2021-05-12

申请人： HITACHI, LTD.

发明人： Minseok PARK ,  Masahiro KAYAMA ,  Gosuke HAYASHI

IPC分类号： G05B19/4155 ,  B21B37/00 ,  B21B1/02

摘要： A hot rolling line control system includes a rolling condition setting unit, an operation data collection unit that collects rolling conditions and operation data of a line during rolling, an operation data storage unit, a material measurement data storage unit that stores material actual measurement data obtained by measuring a material of a rolled steel sheet, a material prediction unit that predicts material of rolled steel sheet, and a material prediction data storage unit that stores material prediction data in the material prediction unit, and the material prediction unit includes a classification criteria creation and material model regression unit that creates classification criteria using operation data and the material actual measurement data, classifies the operation data and the material actual measurement data according to the created classification criteria, and regresses the classified operation data and material actual measurement data to create a material model for each classification.

公开(公告)号：US20210220884A1

公开(公告)日：2021-07-22

申请号：US17143245

申请日：2021-01-07

申请人： Yanshan University

发明人： Lipo Yang ,  Shuguang Liu ,  Jiaxuan Yang ,  Yunpeng Liu ,  Gengliang Liu ,  Hailong Zhang

IPC分类号： B21B37/58 ,  B21B1/02 ,  B21B13/02 ,  B21B37/74 ,  B21B45/00

摘要： The present invention provides a dynamic contact heat transfer simulation device for rolling heavy-load deformation zone. The device includes a control system, a data acquisition system, a pressure-adjustable fixed cold end, a rotating chuck, a temperature-adjustable heat-conducting rod and an speed-adjustable rotation hot end; the device utilizes the rotating chuck and the speed-adjustable rotating hot end to adjust the rotation speed in real time according to the actual rolling conditions, simulate the working conditions of the actual rolling heavy-load deformation zone, and accurately obtain the dynamic heat transfer coefficient of the rotating contact interface under variable load pressure conditions.

公开(公告)号：US20200240006A1

公开(公告)日：2020-07-30

申请号：US16849050

申请日：2020-04-15

申请人： Tosoh SMD, Inc.

发明人： Eugene Y. Ivanov ,  Matthew Fisher ,  Alex Kuhn

IPC分类号： C23C14/34 ,  B21B15/00 ,  H01J37/34 ,  B21B1/02 ,  C22C27/02 ,  C22F1/18

摘要： Methods for making Ta sputter targets and sputter targets made thereby. Ta ingots are compressed along at least two of the x, y, and z dimensions and then cross rolled in at least one of those dimensions. A pair of target blanks is then cut from the cross rolled ingot. The resulting targets have a predominate mix of {100} and {111} textures and have reduced B {100} and B {100} banding factors.

公开(公告)号：US10350658B2

公开(公告)日：2019-07-16

申请号：US15513904

申请日：2014-09-30

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Yoshitsugu Tatsuzawa ,  Tomonori Kunieda ,  Kenichi Mori ,  Hideki Fujii ,  Kazuhiro Takahashi

IPC分类号： B21B1/02 ,  B21B3/00 ,  C22C1/02 ,  C22C14/00 ,  B32B15/01 ,  B22D15/00 ,  B22D25/00 ,  B22D19/16 ,  B22D19/08 ,  B22D23/10 ,  B22D21/00 ,  B22D23/06 ,  B22D21/06 ,  B32B15/04 ,  C22C1/10 ,  B32B1/08 ,  B21B1/22 ,  C22C1/04 ,  B32B5/14 ,  C23C6/00 ,  C23C30/00 ,  C23C20/00 ,  C23C10/60 ,  C23C10/30 ,  C23C10/28 ,  C23C20/06 ,  C23C20/04 ,  C23C20/02 ,  C22B9/22 ,  C22B9/16 ,  C22B9/20 ,  C23C24/10 ,  C22F1/18

摘要： Provided is a titanium cast product made of commercially pure titanium, the titanium cast product being produced by electron-beam remelting or plasma arc melting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of βstabilizer elements to the surface and melting and resolidifying the surface. An average value of β stabilizer element(s) concentration in a range of within 1 mm in depth is higher than βstabilizer element(s) concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the β stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.

公开(公告)号：US10207316B2

公开(公告)日：2019-02-19

申请号：US16036998

申请日：2018-07-17

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Naoki Tajima ,  Akihiro Yamanaka ,  Kenji Taguchi

IPC分类号： B22D11/128 ,  B22D11/16 ,  B22D11/041 ,  B22D11/12 ,  B21B1/04 ,  B21B1/46 ,  B21B1/02

摘要： A primary object of this invention is to provide a continuous casting method by which a slab of excellent internal quality can be obtained even if the casting speed is changed. In this invention, upon continuous casting with two pairs of the reduction rolls arranged along a casting direction and support rolls arranged between the reduction rolls, when a casting speed is reduced compared to a state where combination of reduction with reduction rolls at a first stage on an unsolidified portion of the slab and reduction with reduction rolls at a second stage on a solidified portion thereof is employed, the combination is switched to combination of reduction with the reduction rolls at the first stage on a portion of the slab at an end of solidification and the reduction with the reduction rolls at the second stage on the solidified portion thereof.

公开(公告)号：US20180135155A1

公开(公告)日：2018-05-17

申请号：US15563986

申请日：2016-04-07

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Yoshihiro SUWA ,  Shinichiro TABATA ,  Masafumi AZUMA ,  Kazuo HIKIDA

IPC分类号： C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/24 ,  C22C38/00 ,  C22C38/06 ,  C22C38/34 ,  B21B1/02 ,  B21B1/22

摘要： A steel sheet for heat treatment having a chemical composition including, by mass %: C: 0.05 to 0.50%; Si: 0.50 to 5.0%; Mn; 1.5 to 4.0%; P: 0.05% or less; S: 0.05% or less; N: 0.01% or less; Ti: 0.01 to 0.10%; B: 0.0005 to 0.010%; Cr: 0 to 1.0%; Ni: 0 to 2.0%; Cu: 0 to 1.0%; Mo: 0 to 1.0%; V: 0 to 1.0%; Ca: 0 to 0.01%; Al: 0 to 1.0%; Nb: 0 to 1.0%; REM: 0 to 0.1%; and the balance: Fe and impurities, wherein a maximum height roughness Rz on a surface of the steel sheet is 3.0 to 10.0 μm, and a number density of carbide being present in the steel sheet and having circle-equivalent diameters of 0.1 μm or larger is 8.0×103/mm2 or lower.