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61. 发明专利

ES2242801T3 TUBO DE ACERO SOLDADO CON EXCELENTE HIDROFORMABILIDAD Y PROCEDIMIENTO PARA SU PRODUCCION. 未知
公开(公告)号：ES2242801T3
公开(公告)日：2005-11-16
申请号：ES02012118
申请日：2002-05-31
申请人： JFE STEEL CORP
发明人： TOYOOKA TAKAAKI , ARATANI MASATOSHI , KAWABATA YOSHIKAZU , HASHIMOTO YUJI , YORIFUJI AKIRA , OKABE TAKATOSHI
IPC分类号： C22C38/00 , B21B3/02 , B21B17/14 , B21B45/00 , B21C37/06 , B21D26/039 , B21D26/043 , B21D26/047 , C21D8/10 , B21B3/00
摘要： Un tubo de acero soldado que tiene excelente capacidad de hidroformación y una resistencia a tracción de al menos 590 MPa, caracterizado porque dicho tubo de acero tiene una composición que comprende, sobre la base de porcentaje en masa: entre 0, 03 % y 0, 2 % de C; entre 0, 01 % y 1, 3 % de Si; entre 1, 0n% y 1, 5 % de Mn; entre 0, 01 % y 0, 05 % de P; entre 0, 01 % o menor de S; entre 0, 01 % y 1, 0 % de Cr; entre 0, 01 % y 0m04 % de Al; entre 0, 01 % y 0, 1 % de Nb; entre 0, 01 % y 0, 1 % de Ti; entre 0, 01 % y 0, 1 % de V; entre 0, 001 % y 0, 01 % de N; y que comprende opcionalmente al menos un grupo del Grupo A y el Grupo B, donde el Grupo A incluye al menos un elemento entre 0, 1 % y 1, 0 % de Cu, entre 0, 1 % y 1, 0 % de Ni, entre 0, 1 % y 1, 0 % de Mo y entre 0, 001 % y 0, 01 de B; y el grupo B incluye al menos un elemento entre 0, 002 % y 0, 02 % de Ca y entre 0, 002 % y 002 % de un elemento de tierras raras, y siendo el resto Fe e impurezas ocasionales, donde un producto n x r deun valor-n y un valor-r de dicho tubo de acero es al menos 0, 22, y donde el valor-n es al menos 0, 15 y el valor-r es al menos 1, 5, donde n = (1n 10% - 1n 5%) / (1n e10% - 1n e5%), en la que 10% = tensión verdadera con 10 % de alargamiento; 5% = tensión verdadera con 5 % de alargamiento; e10%= deformación verdadera con 10 % de alargamiento; e5% = deformación verdadera con 5 % de alargamiento; y donde r = 1n (Wi/Wf)/In(Ti/Tf), en la que Wi = anchura inicial; Wf = anchura final; Ti = espesor inicial; Tf = espesor final.

62. 发明专利

DE60112981D1 未知
公开(公告)号：DE60112981D1
公开(公告)日：2005-10-06
申请号：DE60112981
申请日：2001-03-07
申请人： SUMITOMO HEAVY INDUSTRIES , JFE STEEL CORP
发明人： OCHI SHIGEHARU , FUJIWARA HIROSHI , INUI SHO , TOYOOKA TAKAAKI , ITADANI MOTOAKI , YORIFUJI AKIRA , ONISHI TOSHIO , SUGANO KOJI , NISHIDA YASUO , TANAKA NOBUKI
IPC分类号： B21B27/02 , B21B1/18 , B21B13/00 , B21B13/10 , B21B13/12 , B21B17/14 , B21B31/02 , B21B35/12 , B21B35/14
摘要： This invention provides a rolling mill and a rolling-mill train which are compact. Reducers to be coupled with them can be made compact. The inner surfaces of pipes to be rolled with the rolling mill and the rolling-mill train can be prevented from becoming squarish. The rolling mill comprises a plurality of rolls disposed symmetrically around the pathline of the rolling mill, an annular driving bevel gear of a large diameter for driving and rotating the rolls, an input-shaft mechanism for rotating the driving bevel gear, a plurality of transmission mechanisms disposed at regular intervals along the driving bevel gear, and a housing for holding them. The input-shaft mechanism (i) has an input shaft inserted in the housing from its outside and an input bevel gear of a small diameter mounted on the input shaft and engaging with the driving bevel gear and (ii) is disposed between two adjacent transmission mechanisms. With the input shaft disposed horizontally, the phase angle of the roll unit can be adjusted minutely.

63. 发明专利

DE69924841D1 未知
公开(公告)号：DE69924841D1
公开(公告)日：2005-05-25
申请号：DE69924841
申请日：1999-09-08
申请人： SUMITOMO HEAVY INDUSTRIES , JFE STEEL CORP
发明人： OCHI SHIGEHARU , FUJIWARA HIROSHI , INUI SHO , TOYOOKA TAKAAKI , ITADANI MOTOAKI , YORIFUJI AKIRA , ONISHI TOSHIO , SUGANO KOJI , KODAKA MIKIO , TANAKA NOBUKI
IPC分类号： B21B13/10
摘要： A rolling mill comprising a roll unit and a drive unit for driving the roll unit. The drive unit comprises an outer housing, a pair of large-diameter ring-like driving bevel gears disposed concentric with the pass line, an input shaft mechanism for rotating the driving bevel gears, and transmission mechanisms for transmitting the torque of the driving bevel bears to the rolls. Each transmission mechanism comprises a small-diameter transmission bevel gear caught between and engaging with the driving bevel gears and first and second transmission shafts for transmitting the torque of the transmission bevel gear to a roll. The drive and roll units are coupled and uncoupled by couplings. Four positioning parts are formed on the outer periphery of the inner housing of the roll unit. The outer housing of the drive unit is generally in the shape of a ring, and four positioning parts are formed on the inner periphery of the outer housing. When the inner housing is fitted into the outer housing, the inner housing is positioned in the outer housing by the positioning parts laterally and longitudinally and also in both directions of the pass line by stoppers and hold-downs.

64. 发明专利

CA2511633A1 TUBE WITH HIGH DIMENSIONAL ACCURACY, AND METHOD AND DEVICE FOR MANUFACTURING THE TUBE 未知
公开(公告)号：CA2511633A1
公开(公告)日：2004-10-28
申请号：CA2511633
申请日：2004-04-08
申请人： JFE STEEL CORP
发明人： NAGAHAMA TAKUYA , SAKATA KEI , SUGANO KOJI , OHNISHI TOSHIO , KENMOCHI KAZUHITO , TOYOOKA TAKAAKI , YORIFUJI AKIRA
IPC分类号： B21C1/22 , B21C37/06
摘要： A tube with a high dimensional accuracy manufacturable at low cost and havin g sufficient fatigue strength throughout the wide range of size requirement of the tube and a method of manufacturing the tube. With a plug (1) inserted in to a metal tube (5), the metal tube (5) is pushed and passed through the hole o f a die (2) for pushing-out. Thus, the pushed-out tube with the high dimension al accuracy in which one or more of an outer diameter deviation, inner diameter deviation, and circumferential wall thickness deviation are 3.0% or less can be provided.

65. 发明专利

DE69729488D1 未知
公开(公告)号：DE69729488D1
公开(公告)日：2004-07-15
申请号：DE69729488
申请日：1997-12-22
申请人： JFE STEEL CORP
发明人： YORIFUJI AKIRA , TOYOOKA TAKAAKI , KANAYAMA TARO
IPC分类号： B21B19/04 , B21B19/10 , B21B25/00
摘要： This invention provide a plug and a mandrel bar for use in rolling a seamless steel pipe of which life can be substantially improved more than that of the prior art under a severe condition of use always exposed to a high temperature and high load. The entire plug or the mandrel bar or at least the surface layer of the extremity end and the work section of it is made of ceramics. In addition, this invention provides a method for manufacturing a seamless steel pipe using such a plug or mandrel bar as described above.

66. 发明专利

JP2009197314A Component for machine structure 审中-公开
标题翻译：机械结构部件
公开(公告)号：JP2009197314A
公开(公告)日：2009-09-03
申请号：JP2008068798
申请日：2008-03-18
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HAYASHI TORU , KIMURA HIDETO , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D1/10 , C21D1/42 , C22C38/16 , C22C38/60
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To concretely give a way for realizing the improvement of fatigue properties by retained austenite. SOLUTION: The component for a machine structure has a componential composition comprising, by mass, 0.3 to 0.7% C, ≤0.80% Si, 1.0 to 3.0% Mn, ≤0.25% Al, 0.005 to 0.1% Ti, 0.05 to 0.6% Mo, 0.0003 to 0.006% B, ≤0.06% S, ≤0.020% P, ≤1.0% Cu and ≤3.5% Ni, and the balance Fe with inevitable impurities, and in which the average size of old austenite grains in a hardened layer subjected to quenching is controlled to ≤10 μm, and also, the amount of retained austenite in the hardened layer is controlled to 7 to 22%. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：具体给出通过残留奥氏体实现疲劳性能的提高的途径。＆lt; P＆gt;解决方案：机械结构的部件具有组成成分，其组成为：质量分数为0.3〜0.7％的C，≤0.80％的Si，1.0〜3.0％的Mn，≤0.25％的Al，0.005〜0.1％的Ti，0.05〜 0.6％Mo，0.0003〜0.006％B，≤0.06％S，≤0.020％P，≤1.0％Cu和≤3.5％Ni，余量为Fe与不可避免的杂质，其中a 进行淬火的硬化层被控制为≤10μm，并且将硬化层中的残余奥氏体的量控制在7〜22％。版权所有（C）2009，JPO＆INPIT

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