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1. 发明专利

JP6737321B2 継目無鋼管の製造方法有权
公开(公告)号：JP6737321B2
公开(公告)日：2020-08-05
申请号：JP2018216656
申请日：2018-11-19
申请人： JFEスチール株式会社
发明人：藤村和樹 , 山本和樹 , 佐々木俊輔 , 勝村龍郎
IPC分类号： B21B17/08

2. 发明专利

JP4300866B2 Method and apparatus for manufacturing a seamless steel pipe 有权
公开(公告)号：JP4300866B2
公开(公告)日：2009-07-22
申请号：JP2003124960
申请日：2003-04-30
申请人： Jfeスチール株式会社
发明人：宣男佐藤 , 征一郎南部 , 進板谷
IPC分类号： B21B17/08 , B21B37/18 , B21B37/78

3. 发明专利

JP2007160338A Hot working tool, and method for manufacturing seamless steel pipe 有权
标题翻译：热加工工具，以及制造无缝钢管的方法
公开(公告)号：JP2007160338A
公开(公告)日：2007-06-28
申请号：JP2005358436
申请日：2005-12-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IIDA SUMIO , ASABE KAZUTAKA , NAKANISHI TETSUYA , AMANO SHIGERU
IPC分类号： B21B25/00 , B21B17/08 , B21B25/04 , C22C38/00 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide a hot working tool having an excellent tool life, and further to provide a method for manufacturing a seamless steel pipe having excellent inside surface properties.
SOLUTION: The hot working tool has a metal-carbide composite coating film formed on the surface of a base material, the metal-carbide composite coating film having a niobium carbide powder dispersed in a matrix metal made of a Co-base alloy or an Ni-base alloy, and has a ferrous oxide coating film formed on its outermost surface. Preferably, the ferrous oxide coating film is formed by rolling a carbon steel. The hot working tool is suitable for a plug to be used in plug-mill-rolling a blank pipe made of alloy steel or stainless steel containing 8 or more mass% of Cr at a rolling reduction of 2 to 5 mm in a thickness.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的工具寿命的热加工工具，并且还提供一种具有优异的内表面性能的无缝钢管的制造方法。解决方案：热加工工具在基材表面形成有金属碳化物复合涂膜，该金属碳化物复合涂膜具有分散在由Co基合金制成的基质金属中的碳化铌粉末或Ni基合金，并且在其最外表面上形成有氧化亚铜涂膜。优选地，通过轧制碳钢来形成氧化亚铜涂膜。该热加工工具适用于在厚度为2〜5mm的压下量下，将含有8质量％以上的Cr的合金钢或不锈钢制的空管进行插拔轧制。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2004202573A Manufacturing method and apparatus for seamless steel pipe 有权
标题翻译：无缝钢管的制造方法和装置
公开(公告)号：JP2004202573A
公开(公告)日：2004-07-22
申请号：JP2003124960
申请日：2003-04-30
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： NANBU SEIICHIRO , SATO NORIO , ITAYA SUSUMU
IPC分类号： B21B17/08 , B21B37/18 , B21B37/78
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method and apparatus which can sufficiently minimize a longitudinal thickness deviation, even in the case of a Mannesmann-plug mill process. SOLUTION: In the seamless pipe manufacturing process, a steel billet 1 is pierced by a piercing mill 3, expanded by an elongator 6, and successively elongation-rolled by the plug mill 7 composed of a pair of top and bottom main rolls 12 and return rolls. Then, a roll gap between the top and bottom main rolls of the plug mill is changed during the elongation-rolling at the pre-determined changing rate. It is desirable that the changing rate is decided based on an outer diameter of plug used on the elongator, and an outer diameter as well as a temperature of the pipe passing through the elongator. The changing amount of the gap between the top and the bottom main rolls at the plug mill for the first rolling piece in a batch is set according to calculation based on the target outer diameter, target thickness and target length of the pipe at the exit side of the plug mill, as well as the outer diameter of the plug used and the entry side temperature of the workpiece at the plug mill. As for the second rolling piece and after, it is better that the gap is set based on a hot thickness data measured at the exit of the reeler which applies reeling after the elongation-rolling, replacing the existing set value. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：即使在Mannesmann-plug轧机工艺的情况下，也可提供能够充分地最小化纵向厚度偏差的制造方法和装置。解决方案：在无缝管制造过程中，钢坯1被穿孔机3刺穿，由延伸器6扩张，并且通过由一对顶部和底部主辊构成的塞式磨机7依次伸长轧制 12和回卷。然后，以预定的变化率，在延伸轧制期间改变塞式研磨机的顶部和底部主辊之间的辊间隙。希望基于在伸长器上使用的塞子的外径以及通过该延伸器的管的外径以及温度决定变化率。根据在出口侧的管的目标外径，目标厚度和目标长度的计算，设定批次中的第一轧制用插头式轧机的顶部和底部主辊之间的间隙的变化量的塞子磨机，以及所使用的塞子的外径和在球磨机处的工件的入口侧温度。对于第二轧制件，之后，基于在伸长轧制后施加卷取的卷取机的出口处测量的热厚度数据来替换现有设定值，更好地设定间隙。版权所有（C）2004，JPO＆NCIPI

5. 发明专利

JP2003290818A Manufacturing device for tube with grooved inner face 审中-公开
标题翻译：具有内部表面的管的制造装置
公开(公告)号：JP2003290818A
公开(公告)日：2003-10-14
申请号：JP2002098001
申请日：2002-03-29
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： HINAKO NOBUAKI , SAEKI CHIKARA , KOSEKI KIYONORI , IWAMOTO HIDEKI
IPC分类号： B21B3/00 , B21B13/02 , B21B15/00 , B21B17/08 , B21B17/10 , B21B23/00 , B21B25/00 , B21B27/00 , B21B37/78 , B21C1/22 , B21C3/08 , B21C37/20
CPC分类号： B21B17/10 , B21B17/08 , B21B25/00 , B21B27/00 , B21B37/78 , B21B2003/001 , B21B2003/005 , B21B2013/025 , B21B2015/0028 , B21B2023/005 , B21B2203/06 , B21C37/202 , B21C37/207
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing device for a tube with a grooved inner face composed of a rolled seamless tube with which the rolling load of the rolling rolls during rolling is constant and the occurrence of a change in the groove shape and of the break of a base stock are prevented.
SOLUTION: A load cell 21 for measuring rolling load by work rolls (concave rolls) 3 and back-up rolls 20 is provided and a load impressing device is controlled so that the rolling load detected by this load cell is constant. In this way, the tube with the grooved inner face having the fins of constant height is manufactured.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种具有带槽内表面的管的制造装置，该槽具有由轧制无缝管组成的轧制无缝管，其中轧制期间轧制辊的轧制载荷是恒定的，并且槽形状发生变化并且防止了基料的断裂。解决方案：设置用于通过工作辊（凹辊）3和支承辊20测量轧制负载的测力传感器21，并且控制负载施加装置，使得由该测力传感器检测到的轧制负载是恒定的。以这种方式制造带槽内表面具有恒定高度的翅片的管。版权所有（C）2004，JPO

6. 发明专利

JP2000190007A PLASTIC WORKING METHOD TO MANUFACTURE SEAMLESS HOLLOW BODY WITH BOTTOM OR SEAMLESS PIPE 失效
公开(公告)号：JP2000190007A
公开(公告)日：2000-07-11
申请号：JP31451699
申请日：1999-11-05
申请人： MANNESMANN AG
发明人： NICKEL WILHELM , SCHMITZ THEODOR , SCHLUESSEL HANS-JUERGEN , BOROWIKOW ALEXANDER , BLEI HOLGER
IPC分类号： B21B23/00 , B21B17/08 , B21B19/04 , B21B25/00 , B21C1/24 , B21J5/06 , B21K21/06 , B21K21/14
摘要： PROBLEM TO BE SOLVED: To obtain a hollow body or pipe with specified outside diameter and wall thickness while reducing reheating time and preventing the danger of the bottom being broken through by using a mandrel with a spherical end when the hollow material pipe, wherein the bottom material integrally formed at the time of boring the hollow material pipe is reduced in thickness from the edge area toward the center, is punched. SOLUTION: A steel ingot or a continuous-cast steel is heated to the plastic working temperature, and with dies and a punching mandrel 2, rolling into a hollow material pipe is done so that the bottom is shaped into a truncated cone. With the dies, the material of a bottom portion 6' is reduced in thickness from the edge area toward the center and the bus line contour of the bottom portion 6' is brought into agreement with a hyperbolic binding string through the first approximation. Then the hollow material pipe is punched into the final size with a mandrel 17 on which a spherical end area 18 formed and one or more ring dies 7, and when necessary, the material is reheated between passes so that the bottom 6" is remained on the hollow material pipe or cut from the hollow material pipe. Thus, the seamless hollow body with a bottom or a seamless pipe of 200-1,450 mm outside diameter and 20-250 mm wall thickness can be obtained.

7. 发明专利

JP2924593B2 失效
公开(公告)号：JP2924593B2
公开(公告)日：1999-07-26
申请号：JP23406893
申请日：1993-08-25
申请人： SUMITOMO KINZOKU KOGYO KK
发明人： OKUYAMA KO
IPC分类号： B21B17/08 , B21B37/18 , B21B37/78

8. 发明专利

JPH11123410A MANDREL PULLING-OUT DEVICE AND MANDREL MILL USING THE SAME 失效
公开(公告)号：JPH11123410A
公开(公告)日：1999-05-11
申请号：JP28160597
申请日：1997-10-15
申请人： SUMITOMO METAL IND
发明人： GOTO HISAO , YOKOI YOICHI , NAKAMURA KATSUOMI
IPC分类号： B21B17/08 , B21B25/02
摘要： PROBLEM TO BE SOLVED: To provide a mandrel pulling-out device in accordance with emergency pulling-out of a mandrel atendant upon abnormal rolling and mandrel mill using the same. SOLUTION: In the mandrel pulling-out device 6 for mandrels having a U-shaped guide 7 on which the groove width which is larger than the diameter of the mandrel and smaller than the outside diameter of a hollow tube stock is formed so that the bitten mandrel 1 is pulled out by restraining movement in the axial direction of the hollow tube stock at the time of abnormal rolling, a U-shaped guide group 7 for forming >=2 kinds of groove widths, means 9, 10 for selecting and changing the U-shaped guide 7 for forming the groove width corresponding to the diameter of the mandrel from the U-shaped guide group and means 11 for inclining the whole device composed of these parts and members are provided. The mandrel mill is provided with a device for inserting the mandrel into the hollow tube stock on the inlet side of rolling, mandrel holding device for restraining the rear end of the mandrel during rolling with the mandrel mill and for retreating the mandrel after completing rolling or at necessary time and mandrel pulling-out device 6.

9. 发明专利

JPH1128507A PLUG MILL ROLLING METHOD FOR SEAMLESS METAL TUBE 失效
公开(公告)号：JPH1128507A
公开(公告)日：1999-02-02
申请号：JP18122797
申请日：1997-07-07
申请人： SUMITOMO METAL IND
发明人： NAKANISHI TETSUYA , HARA HIDEYOSHI , AMANO SHIGERU
IPC分类号： B21B3/02 , B21B17/08 , B21B25/04 , C10M103/02 , C10N40/24
摘要： PROBLEM TO BE SOLVED: To obtain an excellent inner surface property even in the case of rolling with a large rolling reduction by specifying the transfer speed of a plug and feeding a powdery lubricant consisting of the mixture of powder of oxide, a hydroxide or a hydroxide contg. water of crystallization with prescribed constituent and graphite powder into the tube stock. SOLUTION: In the plug mill rolling method of a seamless metal tube capable of rolling tube stock consisting of the ferrous alloy containing 4.5 weight% or more Cr with a large wall thickness rolling reduction, the plug is transferred at the speed of >=2.0 mm/sec in the rolling advancing direction of the tube or in the inverse direction of the rolling advancing direction. Besides, the powdery lubricant consisting of the mixture of one kind or two kinds or more of powder selected from the oxide, the hydroxide or the hydroxide contg. water of crystallization consisting of each element or plural elements of, as main constituent, aluminum, silicon, calcium, titanium, iron, boron and sodium and graphite powder is fed into the tube stock.

10. 发明专利

JP2711129B2 失效
公开(公告)号：JP2711129B2
公开(公告)日：1998-02-10
申请号：JP3951089
申请日：1989-02-20
IPC分类号： B21B17/00 , B21B17/08

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