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1. 发明专利

JPH11106035A CARRIER DEVICE OF HOT ROLLED COIL 失效
公开(公告)号：JPH11106035A
公开(公告)日：1999-04-20
申请号：JP26872997
申请日：1997-10-01
申请人： NIPPON STEEL CORP
发明人： OKADA HIROYUKI , TAKAHASHI MASAYOSHI , SATO YOSHIHIRO , WAKASUGI NOBUYUKI , YAMADA TAICHI
IPC分类号： B65G47/52
摘要： PROBLEM TO BE SOLVED: To provide a carrier device of a hot rolled coil capable of reducing generation of a crack of the hot rolled coil accompanying the carrying and efficiently carrying the hot rolled coil between conveyors. SOLUTION: This carrier device is constituted of a conveyor 4 with saddle which carries a hot rolled coil having finished hot rolling so that a coil rolling direction and a conveyor advancing direction may be parallel and a coil inside diameter hole may be located in the horizontal direction, a V-slat conveyor 7 orthogonally crossing with this conveyor 4 with saddle, carries the hot rolled coil so that the coil rolling direction and the conveyor advancing direction may be at right angle and the coil inside diameter hole may be located in the horizontal direction and is divided into a plurality of V-slat conveyors, a transfer device 8 transferring the hot rolled coil from the conveyor 4 with saddle to the V-slat conveyors 7 and automatic connecting trucks 9 for transferring hot rolled coil between each V-slat conveyor 7, 7.

2. 发明专利

JPH08174063A METHOD FOR CONTROLLING CENTERING OF STEEL STRIP 失效
公开(公告)号：JPH08174063A
公开(公告)日：1996-07-09
申请号：JP32224594
申请日：1994-12-26
申请人： NIPPON STEEL CORP
发明人： OKADA HIROYUKI , YAMADA TAICHI
IPC分类号： B21B39/00 , B21B39/14 , B21C47/34
摘要： PURPOSE: To obtain a method for controlling the centering of a steel strip having little development of defective shape of coiling and flaw by reducing the facing interval so as to approach to the steel strip in order from side guides at the front step positioned near the finish rolling mill with interval adjusting mechanism. CONSTITUTION: The steel strip finish-rolled with a finish rolling mill is transported to a coiler 2 while tacking based on the revolutional rate of the rolling mill roll, and the error developed with the tracking is corrected based on a steel strip positioned detecting signal of a first sensor 5a and a second sensor 5b, and the positional data of the steel strip with a sequencer 6 for controlling is revised. At the time of detecting with the sequencer 6 that the front tip part of the steel strip reaches the position between side guides 3a, the sequencer 6 for controlling transmits a working signal to a short stroke cylinder 4a in the interval adjusting mechanism 4a in the interval adjusting mechanism 4 for executing the interval adjustment of the side guides 3a to reduce the interval of the side guides 3a. By this method, the centering is executed at the gap between the steel strip and the side guides.

3. 发明专利

JP2002180186A HOT ROLLED STEEL SHEET AND COLD ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY AND HARDENABILITY 失效
公开(公告)号：JP2002180186A
公开(公告)日：2002-06-26
申请号：JP2000373967
申请日：2000-12-08
申请人： NIPPON STEEL CORP
发明人： MIYAGI TAKASHI , OKADA HIROYUKI , OKAMOTO TSUTOMU
IPC分类号： C22C38/00 , C22C38/32 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel sheet and a cold rolled steel sheet having excellent formability and hardenability, i.e., whose hardenability is good, and to which high tensile strength can be imparted after quenching. SOLUTION: The steel sheet has a composition containing, by mass, 0.05 to 0.50% C, =(11800 Cr%+10600 Mn%-2250)×C%-1050>=0...(1), and in the case of the cold rolled steel sheet, the contents of C, Mn and Cr satisfy the inequality of 150>=(11800 Cr%+10600 Mn%-1300)×C%-1350>=0...(2).

4. 发明专利

JPH11105821A APPARATUS FOR BUNDLING HOT COILS 失效
公开(公告)号：JPH11105821A
公开(公告)日：1999-04-20
申请号：JP27736497
申请日：1997-10-09
申请人： NIPPON STEEL CORP , KOHAN KOGYO
发明人： OKADA HIROYUKI , SATO YOSHIHIRO , KAWATANI HIROMI , IWAMURA TERUO
IPC分类号： B65B27/06
摘要： PROBLEM TO BE SOLVED: To prevent a hot coil outer periphery after bundling from loosening or a band from being cut, and to reduce fastening time by measuring a temperature of the hot coil outer periphery by a thermometer provided on a bundling machine before tightly attaching the band to the hot coil outer periphery and by fastening and tightening the band with proper fastening force based on the temperature information. SOLUTION: An excessive band is brought back by reversely rotating an air motor 2, and a band is wound around a coil C when a bundling head 1 comes into contact with the coil C. At this time, the bundling head 1 lowers, and before it comes into contact with the coil C, measuring of a temperature of a coil outer periphery is started by a thermometer 2. Based on the correct coil outer periphery temperature information, time from a point when the band is wound around the coil outer periphery until fastening is completed is estimated, and breaking force and elastic limit of the band is obtained from a band surface temperature at the time of fastening completion to obtain fastening force which may cause no breakage. Thereafter transmission of the air motor 2 is changed over to a low speed/high torque side, and the band is fastened by the bundling head 1 for tightening.

5. 发明专利

JPH09304354A METHOD FOR DETECTING DISCONNECTION OF CABLE ELEMENT WIRE 失效
公开(公告)号：JPH09304354A
公开(公告)日：1997-11-28
申请号：JP12428096
申请日：1996-05-20
申请人： NIPPON STEEL CORP
发明人： SEISHIYOU MORIO , EGUCHI TATSUYA , TAKAMI SHINICHI , OKADA HIROYUKI , ISHIDA TSUGIO , UDAGAWA TATSUSHI
IPC分类号： G01N29/04 , G01H5/00 , G01N29/00 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To detect disconnection of the element wires of a parallel-wire cable that is a hanging member of a bridge, such as a cable stayed bridge or a suspension bridge, or of a construction. SOLUTION: Part of a cover 5 at a position that is 5m or so away from the end 3 of cable is peeled, an ultrasonic probe 7 is contacted with the side of an element wire 2 for examination, and ultrasonic pulses of a predetermined frequency are input to the element wire 2 by an ultrasonic flaw detector 8. The input ultrasonic pulses propagate within the element wire 2 toward a socket 3 and, if the element wire 2 is ruptured, are reflected at the rupturing point; if the element wire 2 is not ruptured, they are reflected at an element wire terminal point 3 inside the socket. The reflected pulses are detected by the ultrasonic probe 7 and converted into voltage signals by the ultrasonic flaw detector 8, and a display device 9 is used to determine whether or not there is a rupture and displays the rupturing position. If there are no reflected waves, the element wire 2 is judged to be ruptured diagonally.

6. 发明专利

JPH04136137A ROLL MATERIAL FOR HOT-ROLLING SHEET 失效
公开(公告)号：JPH04136137A
公开(公告)日：1992-05-11
申请号：JP25475990
申请日：1990-09-25
申请人： HITACHI METALS LTD , NIPPON STEEL CORP
发明人： HATTORI TOSHIYUKI , NAWATA RYOSAKU , WAKAKO ATSUHIRO , KAWAMURA KUNIO , OKADA HIROYUKI
IPC分类号： B21B27/00 , C22C38/00 , C22C38/44
摘要： PURPOSE:To obtain a roll material for hot-rolling a sheet manufacturable a sheet material of high quality without generating roughening on the surface by specifying the compsn. constituted of C, Si, Mn, P, S, Cr, Mo and Fe as well as the amt. of carbide in the structure and its hardness. CONSTITUTION:The chemical compsn. constituted of, by weight, 1.0 to 2.0% C, 0.2 to 1.5% Si, 0.3 to 1.5% Mn, = two kinds among Nb, V and Ti and the balance substantial Fe is regulated, and the amt. of carbide in the structure is regulated, by volume, to 5 to 15% and its hardness to 70 to 90Hs, by which a roll material for hot-rolling a sheet reducing the generating rate of surface roughening and improvable the yield and quality of a steel sheet can be obtd. Furthermore, it is preferable that this roll material is used for a roll rolling a sheet material constituted of dead soft steel for superdeep drawing having a specified chemical compsn. on a finishing line stand under the conditions of 10 to 35% draft X880 to 1080 deg.C rolling temp.

7. 发明专利

JP2010150581A High strength hot rolled steel sheet having excellent low cycle fatigue property and corrosion resistance after coating, and method for producing the same 有权
标题翻译：具有优异的低周期疲劳性能和耐腐蚀性的高强度热轧钢板及其制造方法
公开(公告)号：JP2010150581A
公开(公告)日：2010-07-08
申请号：JP2008327946
申请日：2008-12-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TANAHASHI HIROYUKI , SAITO SHINYA , FUKUDA SHUJI , OKADA HIROYUKI , HAYASHI KUNIO , TOMOKIYO TOSHIMASA , FUJITA NOBUHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a high strength hot rolled steel sheet which is excellent in both of low cycle fatigue properties and corrosion resistance after coating.
SOLUTION: The high strength hot rolled steel sheet having excellent low cycle fatigue properties and corrosion resistance after coating has a composition containing, by mass, 0.06 to 0.12% C, 0.6 to 1.25% Si, 1.60 to 2.20% Mn and 0.20 to 0.65% Al so as to satisfy [Si]≥[Mn]/4+[Al]/1.2, and in which the contents of P, S and N are limited, and the balance Fe with inevitable impurities, and has a metallic structure composed of the two phases of a ferrite phase and a martensite phase, or the three phases of a ferrite phase, a martensite and a bainite phase, and in which the area ratio of the ferrite phase is 10% and the area ratio of the bainite phase is
摘要翻译：要解决的问题：提供一种在低循环疲劳性能和涂覆后耐腐蚀性都优异的高强度热轧钢板。解决方案：具有优异的低循环疲劳性能和涂覆后的耐腐蚀性的高强度热轧钢板具有质量分数为0.06〜0.12％的C，0.6〜1.25％的Si，1.60〜2.20％的Mn和0.20 至0.65％的Al以满足[Si]≥[Mn] / 4 + [Al] /1.2，并且其中P，S和N的含量受到限制，余量为Fe与不可避免的杂质，并且具有金属由铁素体相和马氏体相的两相或铁素体相，马氏体相和贝氏体相的三相组成的结构，其中铁素体相的面积比<60％，其中，马氏体相为> 10％，贝氏体相的面积比为<5％。此外，在高强度热轧钢板的制造方法中，将板坯再加热至不超过1.300℃，进行热轧，随后进行三段冷却，冷却至≤250℃并卷取。（C）2010，JPO＆INPIT

8. 发明专利

JP2003342683A High-strength hot rolled steel sheet excellent in press formability and blanking workability and its production method 有权
标题翻译：高强度热轧钢板优良的压塑成形性和生产能力及其生产方法
公开(公告)号：JP2003342683A
公开(公告)日：2003-12-03
申请号：JP2002149165
申请日：2002-05-23
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKAMOTO TSUTOMU , OKADA HIROYUKI , ASO TOSHIMITSU , TANIGUCHI YUICHI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot rolled steel sheet excellent in press formability and blanking workability and its production method.
SOLUTION: This high-strength hot rolled steel sheet comprises 0.01-0.30% C, 0.01-2.0% Si, 0.5-3.0% Mn, 0.03%≥P, 0.009%≥S, 0.010%≥N, 0.002-0.70% Al, 0.03-0.40% Ti, and the balance being Fe and unavoidable impurities, contains Ti nitride particles with a particle size of 2.0 μm or more in a number of 160 or less per mm
2 , and has a ferrite-bainite structure mainly comprising ferrite. In the production method for this steel sheet, hot rolling is conducted after such heating that the highest heating temperature of steel is 1,200°C or higher and the heating temperature of 1,100°C or higher is kept for 300 min or less.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供压制成型性和冲切加工性优异的高强度热轧钢板及其制造方法。
解决方案：该高强度热轧钢板包括0.01-0.30％C，0.01-2.0％Si，0.5-3.0％Mn，0.03％≥P，0.009％≥S，0.010％≥N，0.002-0.70 ％Al，0.03-0.40％Ti，余量为Fe和不可避免的杂质，含有粒度为2.0μm以上的钛氮化物颗粒，其数量为每mm 2 SPX的160或更小，以及具有主要包含铁素体的铁素体贝氏体组织。在该钢板的制造方法中，在加热后进行热轧，使钢的最高加热温度为1200℃以上，加热温度为1100℃以上。版权所有（C）2004，JPO

9. 发明专利

JP2002180190A HIGH STRENGTH HOT ROLLED STEEL SHEET HAVING EXCELLENT HOLE EXPANDABILITY AND DUCTILITY AND ITS PRODUCTION METHOD 失效
公开(公告)号：JP2002180190A
公开(公告)日：2002-06-26
申请号：JP2000372462
申请日：2000-12-07
申请人： NIPPON STEEL CORP
发明人： OKADA HIROYUKI , ASO TOSHIMITSU , OKAMOTO TSUTOMU
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide a high strength hot rolled steel sheet which has strength of >=690 N/mm2, and combines high hole expandability and ductility, and to provide a method for producing the steel sheet. SOLUTION: Steel having a composition containing, by mass, 0.01 to 0.08% C, 0.30 to 1.50% Si, 0.50 to 2.50% Mn, =2 μm is >=80%. Further, the steel sheet may contain one or two kinds of Ca and rare earth metals by 0.0005 to 0.01%.

10. 发明专利

JP2002161340A HOT ROLLED STEEL SHEET SUPERIOR IN BURRING WORKABILITY AND FATIGUE CHARACTERISTICS, AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002161340A
公开(公告)日：2002-06-04
申请号：JP2000357569
申请日：2000-11-24
申请人： NIPPON STEEL CORP
发明人： YOKOI TATSUO , TAKAHASHI MANABU , OKAMOTO TSUTOMU , OKADA HIROYUKI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel sheet superior in burring workability and fatigue characteristics, which has a tensile strength of 640 MPa or more, and a manufacturing method therefor. SOLUTION: The hot rolled steel sheet superior in burring workability and fatigue characteristics includes 0.01-0.1% C, 0.5-0.5% Ti by mass%, satisfies a relationship of Ti-48/12C-48/14N-48/32S>=0%, and is characterized by that an average size of precipitates including Ti with particle size of 5 nm or more in the steel is 101-103 nm, and that a minimum space between the precipitates is more than 101 nm and not more than 104 nm. The method for manufacturing the steel sheet is characterized by final hot rolling the steel with the above composition at a finishing temperature range of Ar3 transformation temperature or more, cooling it down to a temperature range of 350-750 deg.C, and winding it up.

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