公开(公告)号：EP3478861B1

公开(公告)日：2024-02-28

申请号：EP18732233.4

申请日：2018-05-29

发明人： KAMMERHOFER, Christoph ,  BRANTNER, Hans Peter

IPC分类号： C21D9/04 ,  C21D1/20

公开(公告)号：EP3604566B1

公开(公告)日：2023-11-15

申请号：EP18772512.2

申请日：2018-03-20

发明人： HONJO, Minoru ,  KIMURA, Tatsumi ,  ICHIMIYA, Katsuyuki ,  HASE, Kazukuni

IPC分类号： C21D9/04 ,  C21D6/00 ,  C21D8/00 ,  C22C38/00 ,  C22C38/18 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/40 ,  C22C38/54 ,  E01B5/02 ,  G01M5/00

公开(公告)号：EP4166682A1

公开(公告)日：2023-04-19

申请号：EP21820925.2

申请日：2021-03-08

申请人： JFE Steel Corporation

发明人： OSUKA, Kenichi ,  FUKUDA, Hiroyuki ,  UEOKA, Satoshi

IPC分类号： C21D9/04 ,  C21D11/00 ,  G01N19/00 ,  G01N3/40 ,  C21D1/00

摘要： Thermal treatment of a rail having a stable hardness distribution is enabled. The hardness of a rail after the rail having a temperature equal to or higher than an austenite region temperature is forcibly cooled in a cooling facility (7) is predicted. A plurality of sets of data for learning composed of a cooling condition data set and output data of hardness are acquired using a model that performs computing by using a cooling condition data set having at least a surface temperature of the rail before the start of cooling and the operating conditions of the cooling facility (7) as input data and the hardness inside the rail after the forced cooling as output data. A hardness prediction model using the cooling condition data set as at least input data and information on the hardness inside the rail after the forced cooling as output data is generated in advance by machine learning using the acquired plurality of sets of data for learning. The hardness of the rail is predicted from the hardness inside the rail with respect to a set of cooling condition data sets set as cooling conditions of the forced cooling by using the hardness prediction model.

公开(公告)号：EP3728677B1

公开(公告)日：2023-01-25

申请号：EP18833713.3

申请日：2018-12-11

发明人： LALIENA IRANZO, Carlos ,  PÉREZ RODRÍGUEZ, Marcos

IPC分类号： C22C38/02 ,  C08K3/04 ,  C09D7/40 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C21D1/70 ,  C09D5/00 ,  C09D1/00 ,  C09D1/02 ,  C21D8/02 ,  C21D8/06 ,  C21D9/04

公开(公告)号：EP3940090A1

公开(公告)日：2022-01-19

申请号：EP20774132.3

申请日：2020-03-02

申请人： NIPPON STEEL CORPORATION

发明人： UEDA, Masaharu ,  MIYAZAKI, Teruhisa ,  TANAHASHI, Takuya ,  MAEDA, Yusuke

IPC分类号： C21D8/00 ,  C21D9/04 ,  C22C38/00 ,  C22C38/58

摘要： A rail including a predetermined chemical composition is provided, in which 90 area% or greater of a metallographic structure in a cross section of a rail web portion is a pearlite structure, a minimum value of a hardness in the cross section of the rail web portion is Hv 300 or greater, and a difference between a maximum value and the minimum value of the hardness in the cross section of the rail web portion is Hv 40 or less.

公开(公告)号：EP3717142B1

公开(公告)日：2021-12-29

申请号：EP18816252.3

申请日：2018-11-27

发明人： ARANCON ALVAREZ, José ,  ALVAREZ DIEZ, David ,  ARTIMEZ ENCINA, José Manuel ,  GARCIA CABALLERO, Francisca ,  POHU, Benjamin

IPC分类号： B21B1/085 ,  C21D9/04 ,  E01B5/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

公开(公告)号：EP3095881B1

公开(公告)日：2021-07-28

申请号：EP14878193.3

申请日：2014-01-13

发明人： KHLYST, Sergey Vasilievich ,  KUZMICHENKO, Vladimir Mikhaylovich ,  KHLYST, Ilya Sergeevich ,  GROMYSHEV, Evgeniy Valerievich ,  SHESTAKOV, Andrey Nikolaevich ,  KIRICHENKO, Mikhail Nikolaevich ,  PSHENICHNIKOV, Pavel Alexandrovich ,  IVANOV, Alexey Gennadievich ,  SERGEEV, Sergey Mikhaylovich ,  GONTAR, Alexey Vladimirovich ,  KOZHEVNIKOV, Konstantin Gennadievich

IPC分类号： C21D1/667 ,  C21D11/00 ,  C21D1/613 ,  C21D9/04 ,  C21D9/46

公开(公告)号：EP3781744A1

公开(公告)日：2021-02-24

申请号：EP19780250.7

申请日：2019-10-01

申请人： Matisa Matériel Industriel SA

发明人： SAVOYAT, Marc-Antoine

IPC分类号： E01B29/17 ,  E01B31/18 ,  E01B29/00 ,  C21D9/04 ,  B23K37/02

公开(公告)号：EP2920328B1

公开(公告)日：2021-01-27

申请号：EP13855497.7

申请日：2013-11-15

发明人： BRAMFITT, Bruce ,  FLETCHER, Frederick ,  MCCULLOUGH, Jason ,  MUSCARELLA, Michael ,  NELSON, John

IPC分类号： C21D9/04 ,  C21D1/667 ,  C22C38/04 ,  C22C38/14

公开(公告)号：EP2513347B1

公开(公告)日：2020-06-24

申请号：EP10795554.4

申请日：2010-12-14

申请人： ArcelorMittal

发明人： BRAMFITT, Bruce L. ,  FLETCHER, Fred B. ,  DAVIS, JR., John A.

IPC分类号： C21D9/04 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14