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1. 发明授权

EP2868763B1 HIGH CARBON STEEL PIPE HAVING EXCELLENT COLD WORKABILITY, MACHINABILITY, AND QUENCHING PROPERTIES, AND METHOD FOR MANUFACTURING SAME 有权
标题翻译：具有优异的冷加工性，加工性和淬火性的高碳钢管及其制造方法
公开(公告)号：EP2868763B1
公开(公告)日：2018-04-18
申请号：EP12880052.1
申请日：2012-06-28
申请人： JFE Steel Corporation
发明人： ARATANI, Masatoshi , TOYODA, Shunsuke , OKABE, Takatoshi , KAWABATA, Yoshikazu , IWAZAKI, Kenichi
IPC分类号： C22C38/00 , C21D9/08 , C22C38/06 , C22C38/38 , B21B17/14 , C21D8/10 , C22C38/02 , C22C38/04 , B23K11/08 , B23K11/16 , B23K13/02
CPC分类号： C22C38/16 , B21B17/14 , B23K11/08 , B23K11/16 , B23K13/025 , B23K2101/06 , B23K2103/04 , C21D6/005 , C21D6/008 , C21D8/105 , C21D9/08 , C21D2211/003 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： Provided are a high-carbon electric-resistance-welded steel tube that combines superior cold workability, machinability, and hardenability and a method for manufacturing such a high-carbon electric-resistance-welded steel tube. Specifically, a high-carbon steel tube is provided as a raw steel tube. The raw steel tube has a composition containing, by mass, 0.25% to 0.60% carbon, 0.01% to 2.0% silicon, 0.2% to 3.0% manganese, 0.001% to 0.1% aluminum, 0.001% to 0.05% phosphorus, 0.02% or less sulfur, 0.0010% to 0.0100% nitrogen, 0.0003% to 0.0050% boron, and 0.0001% to 0.0050% calcium, the balance being iron and incidental impurities. The raw steel tube is heated to and soaked at an Ac 3 transformation point or higher and is then subjected to stretch-reducing rolling at a finishing temperature of rolling of 900°C to (Ac 1 transformation point) with a cumulative reduction in diameter of 30% to 70% within the temperature range of 900°C or lower. This allows the formation, without spheroidizing annealing, of a microstructure containing a ferrite phase and cementite grains dispersed therein that have an average grain size d of 0.1 to less than 0.5 µm and an average distance L between surfaces of adjacent cementite grains of 0.5 to 10 µm. In particular, the steel tube has significantly improved machinability.

2. 发明授权

EP3065891B1 THREE-ROLL ROLLING MILL STAND WITH SIDE CHANGE WITH RESPECT TO THE ROLLING LINE 有权
标题翻译：三辊轧机机座与轧制线有关的侧面变化
公开(公告)号：EP3065891B1
公开(公告)日：2018-01-17
申请号：EP14808857.8
申请日：2014-11-07
申请人： Danieli & C. Officine Meccaniche S.p.A.
发明人： CERNUSCHI, Ettore , BERTELLI, Aristide Giacomo
IPC分类号： B21B13/10 , B21B31/10
CPC分类号： B21B31/08 , B21B13/103 , B21B17/14 , B21B31/10 , B21B31/103 , B21B2203/06
摘要： A roll-holder cartridge for a three-tube rolling stand with means adapted to release a tube during rolling in case of emergency. The roll-holder cartridge (3) has on both side walls a substantially Y-shaped opening (10) laying with the foot at the vertical axis yoke support so as to be able to pull out the roll-holder cartridge according to a direction coinciding with the horizontal axis of the vertical axis yoke while leaving the support hanging from the fixed structure (13) of the rolling stand. In case of normal maintenance operation, the cartridge (3) is pulled out sideways from the structure of the rolling mill with the yoke support of the vertical axis roll anchored to the cartridge itself, like the other supports of the rolls.

3. 发明授权

EP2772320B1 Rolling mill for long articles 无效
标题翻译：长材轧机
公开(公告)号：EP2772320B1
公开(公告)日：2016-02-03
申请号：EP14169505.6
申请日：2011-03-23
申请人： SMS INNSE S.p.A
发明人： Marin, Paolo , Pacher, Marcello , Pavesi, Claudio , Zanella, Guido Emilio
IPC分类号： B21B13/10 , B21B31/10 , B21B35/04
CPC分类号： B21B13/10 , B21B1/18 , B21B13/103 , B21B17/04 , B21B17/14 , B21B31/10 , B21B35/04 , B21B35/14 , B21B2203/06

4. 发明公开

EP2878389A1 SEAMLESS METAL TUBE FABRICATION METHOD AND FABRICATION APPARATUS 有权
标题翻译：方法生产无缝金属管
公开(公告)号：EP2878389A1
公开(公告)日：2015-06-03
申请号：EP13822082.7
申请日：2013-07-18
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： YAMANE, Akihito
IPC分类号： B21B17/02
CPC分类号： B21B19/04 , B21B13/10 , B21B17/00 , B21B17/02 , B21B17/04 , B21B17/14 , B21B19/00 , B21B19/02 , B21B25/00 , B21B25/02 , B21B25/06 , B21B37/78 , B21B2261/04 , B21B2261/08
摘要： A manufacturing method of a seamless metal pipe includes determining whether a preceding-stage stand group is used in outer diameter reduction or in thickness reduction of a hollow shell; and performing elongating on the hollow shell, into which a mandrel bar is inserted, based on the determination. In addition, in the elongating, when the preceding-stage stand group is used in the outer diameter reduction, the hollow shell is rolled in a state where an inner surface of the hollow shell does not come into contact with the mandrel bar in the preceding-stage stand group, and the hollow shell is rolled in a state where the inner surface of the hollow shell comes into contact with the mandrel bar in the succeeding-stage stand group.

5. 发明公开

EP2140950A4 COLD-FINISHED SEAMLESS STEEL PIPE FOR INTEGRALLY MOLDED DRIVE SHAFT, DRIVE SHAFT USING THE PIPE, AND METHOD FOR MANUFACTURING THE COLD-FINISHED SEAMLESS STEEL PIPE 有权
标题翻译：冷加工无缝钢管INTEGRAL形轴这个管道USED SHAFT AND METHOD FOR PRODUCING冷加工无缝钢管
公开(公告)号：EP2140950A4
公开(公告)日：2013-10-30
申请号：EP08739032
申请日：2008-03-27
申请人： NIPPON STEEL & SUMITOMO METAL CORP
发明人： YAMAMOTO TADAYUKI
IPC分类号： B21B23/00 , B21B17/14 , B21B27/02 , B21C37/15 , C21D9/08 , C22C38/00 , C22C38/32 , C22C38/58
CPC分类号： B21B23/00 , B21B17/04 , B21B17/14 , B21B19/04 , B21B27/024 , C21D8/105 , C21D9/08 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , F16C3/02

6. 发明授权

EP2358485B1 VERFAHREN ZUR HERSTELLUNG NAHTLOSER ROHRE MITTELS EINES DREI-WALZEN-STANGENWALZWERKS 有权转让
标题翻译：用于生产无缝管由三辊棒线材连轧工业装置
公开(公告)号：EP2358485B1
公开(公告)日：2012-09-26
申请号：EP09805676.5
申请日：2009-11-20
申请人： V & M Deutschland GmbH , Sumitomo Metal Industries, Ltd.
发明人： KÜMMERLING, Rolf , BELLMANN, Manfred , BRAUN, Winfried , KINUGASA, Hidenori , KENICHI, Sasaki
IPC分类号： B21B27/02 , B21B23/00
CPC分类号： B21B27/024 , B21B17/04 , B21B17/14 , B21B23/00

7. 发明授权

EP2045026B1 Method and device for controlling sizing mill of pipe or tube 有权
标题翻译：的方法和装置，用于控制管定径机
公开(公告)号：EP2045026B1
公开(公告)日：2012-07-04
申请号：EP08021885.2
申请日：2005-03-30
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： Inage, Takateru , Okayama, Fumio
IPC分类号： B21B37/78 , B21B17/14
CPC分类号： B21B37/78 , B21B17/14 , B21B38/04

8. 发明公开

EP2448686A2 ROLLING PROCESS AND RELATING LONGITUDINAL, MULTI-STAND ROLLING MILL OF CONTINUOUS, RESTRAINED TYPE FOR HOLLOW BODIES 有权
标题翻译：轧制工艺等相关联的多机架连续制动纵轧机空心
公开(公告)号：EP2448686A2
公开(公告)日：2012-05-09
申请号：EP10748066.7
申请日：2010-06-29
申请人： Danieli & C. Officine Meccaniche SpA
发明人： CERNUSCHI, Ettore , LATTANZI, Mauro
IPC分类号： B21C45/00
CPC分类号： B21C45/00 , B21B17/14 , B21B23/00 , B21B25/00 , B21B25/02
摘要： A longitudinal, multi-stand rolling mill of the continuous, restrained type for rolling hollow bodies is described, which comprises a main rolling mill (2) and an extracting rolling mill (4) in line and downstream of the main rolling mill, at a distance from the main rolling mill larger than the maximum length of the hollow body and of the spindle, and in which the spindle is extracted at the outlet of the main rolling mill in the gap between said main rolling mill and extracting rolling mill, and is laterally unloaded.

9. 发明公开

EP2313212A1 ROLLING MILL STAND AND RELATED ROLLING MILL FOR LONGITUDINALLY ROLLING ROD-SHAPED BODIES 有权
标题翻译：纸架和相关的滚轧机轧制ALONG杆状体
公开(公告)号：EP2313212A1
公开(公告)日：2011-04-27
申请号：EP09749904.0
申请日：2009-05-21
申请人： Danieli & C. Officine Meccaniche SpA
发明人： CERNUSCHI, Ettore , MARINI, Fabrizio , BERTELLI, Aristide Giacomo
IPC分类号： B21B13/10 , B21B17/04 , B21B31/10
CPC分类号： B21B13/12 , B21B13/04 , B21B13/103 , B21B17/04 , B21B17/14 , B21B31/10 , B21B31/103 , B21B31/20 , B21B2203/06 , Y10T29/49815
摘要： A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters.

10. 发明公开

EP2140950A1 COLD-FINISHED SEAMLESS STEEL PIPE FOR INTEGRALLY MOLDED DRIVE SHAFT, DRIVE SHAFT USING THE PIPE, AND METHOD FOR MANUFACTURING THE COLD-FINISHED SEAMLESS STEEL PIPE 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES KALTBEARBEITETES NAHTLOSES STAHLROHRFÜRINTEGRAL GEFORMTE ANTRIEBSWELLE
公开(公告)号：EP2140950A1
公开(公告)日：2010-01-06
申请号：EP08739032.4
申请日：2008-03-27
申请人： Sumitomo Metal Industries, Ltd.
发明人： YAMAMOTO, Tadayuki
IPC分类号： B21B23/00 , B21B17/14 , B21C37/15 , C21D9/08 , C22C38/00 , C22C38/32 , C22C38/58
CPC分类号： B21B23/00 , B21B17/04 , B21B17/14 , B21B19/04 , B21B27/024 , C21D8/105 , C21D9/08 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , F16C3/02
摘要： Provided is a cold-finished seamless steel tube for an integrally-formed type drive shaft that is obtained by cold-drawing a mother tube hot-rolled by the Mannesmann tube-making method, the production of the steel tube involves subjecting steel billets with a specific chemical composition to piercing rolling by the Mannesmann tube-making method, elongation rolling, adjustment of the groove profile in sizing rolling, and subsequently adjustment of its thickness reduction rate in cold drawing in order to secure a maximum depth of inner surface wrinkles of the seamless steel tube being 0.1 mm or less which allows subsequent required processing such that a maximum wrinkle depth of the inner surface is 0.20 mm or less at an inside diameter reduction rate of 30% or more in the diameter reduced portion. As a result, the seamless steel tube can secure torsional fatigue characteristics excellent as an integrally-formed type automotive drive shaft having diameter reduced portions disposed at opposite end portions, and can be used as a hollow member optimal in attaining lightness and quietness. Its use allows automotive drive shafts to be efficiently manufactured.
摘要翻译：本发明提供一种用于整体式驱动轴的冷轧无缝钢管，其通过用Mannesmann制管方法冷轧母系而获得，钢管的制造包括用钢坯通过Mannesmann制造方法进行穿孔轧制的特定化学成分，伸长率轧制，上浆轧制中的槽轮廓的调整，以及随后在冷拉伸中调整其厚度减小率，以确保最大深度的内表面皱纹无缝钢管为0.1mm以下，允许随后进行的所需加工，使得在直径减小部分的内径减少率为30％以上时，内表面的最大褶皱深度为0.20mm以下。结果，无缝钢管可以确保作为设置在相对端部的具有直径减小部分的整体形成型的汽车驱动轴优异的扭转疲劳特性，并且可以用作在获得亮度和安静性方面最佳的中空构件。其使用可以有效地制造汽车传动轴。

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