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    32.
    发明专利
    未知

    公开(公告)号：BRPI0719897A2

    公开(公告)日：2014-05-06

    申请号：BRPI0719897

    申请日：2007-08-06

    Applicant: SUMITOMO METAL IND

    Inventor： NAKAIKE KOUJI ,  HIDAKA YASUYOSHI ,  IIDA SUMIO

    IPC: B21B25/04 ,  B21B17/02

    Abstract: It is an object of the present invention to provide a mandrel bar cleaning facility capable of effectively suppressing carburization generated on the inner surface of a pipe or tube while the pipe or tube is elongated and rolled without hindering an operation. A mandrel bar cleaning facility 15 of the present invention cleans a mandrel bar B which is pulled out of a mandrel bar conveying line after being used for elongating and rolling a pipe or tube in a mandrel mill 8. The mandrel bar cleaning facility 15 is provided with conveying devices 17, 18 that convey the mandrel bar B in the axial direction while revolving the mandrel bar B in the peripheral direction, and cleaning devices 1d that are arranged oppositely to the side of the mandrel bar B conveyed by the conveying devices 17, 18, and jet high-pressure water having a water pressure of 0.2 to 150 MPa (preferably, 20 to 150 MPa) toward the outer surface of the mandrel bar B.

    33.
    发明专利
    未知

    公开(公告)号：BRPI0722050A2

    公开(公告)日：2014-03-25

    申请号：BRPI0722050

    申请日：2007-12-27

    Applicant: SUMITOMO METAL IND

    Inventor： SAITO KENICHI ,  IIDA SUMIO

    IPC: B21B25/04

    Abstract: In applying a non-graphite-based lubricant composed of, by mass %, 10 to 70% of an oxide-based lamellar compound and 30 to 90% of boric acid onto a mandrel bar, the lubricant film thickness is set from a predetermined master curve for the lubricant film thickness corresponding to an amount of mica. This stably produces a seamless steel pipe of high quality, while preventing seizing marks and internal flaws.

    34.
    发明专利
    未知

    公开(公告)号：BRPI0709841A2

    公开(公告)日：2011-07-26

    申请号：BRPI0709841

    申请日：2007-09-21

    Applicant: SUMITOMO METAL IND

    Inventor： IIDA SUMIO

    IPC: B21B25/00 ,  B21B25/06

    Abstract: The present invention provides an application method of a Cr-plated mandrel bar repeatedly used in mandrel mill rolling by the Mannesmann tube making process. A regeneration treatment is performed to use the mandrel bar again as a tool of like size when an opening width H of a surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 1.5 mm and a depth of the surface defect is in the range of 0.3 mm to less than 2.0 mm. Alternatively, a downsizing treatment is performed to use the mandrel bar again as a tool of a smaller size when the depth of the surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 2.0 mm. The regeneration treatment or downsizing treatment is performed according to conditions or a configuration of the surface defect to achieve repeated application to the mandrel mill rolling, allowing life-extension of the mandrel bar and improvement of cost performance thereof.

    36.
    发明专利
    未知

    公开(公告)号：BRPI0607805A2

    公开(公告)日：2009-06-13

    申请号：BRPI0607805

    申请日：2006-02-22

    Applicant: SUMITOMO METAL IND

    Inventor： NAKAIKE KOUJI ,  HIDAKA TAKAMICHI ,  IIDA SUMIO ,  KUSUDA HIROKI ,  SAKIYAMA MASAMI

    IPC: B21B25/04 ,  B21B17/02

    Abstract: A seamless tube is manufactured while effectively suppressing the occurrence of carburization in the seamless tube without interfering with operations. A seamless tube is manufactured by a step of washing at least a portion of a conveyor installed in a conveying step of a mandrel bar B which is situated from a lubricant applying device 7 to the entrance of a mandrel mill 8, a step of washing, on the upstream side of the lubricant applying device 7, a mandrel bar B which was used for elongation rolling, and a step of applying a non-graphite-based lubricant to the mandrel bar B with the lubricant applying device 7, wherein the conveyor and the mandrel bar B are each washed such that the amount of graphite C2 (g/m 2 ) adhering to the surface of the mandrel bar B before it is provided to elongation rolling and the amount of carbon C1 (g/m 2 ) contained in the organic binder of the applied lubricant satisfy Equation 1: 0.08 x C1 + 0.05 x C2 ‰ 3 and Equation 2: 3 ‰ C1 + C2 ‰ 50.

    Method of applying lubricant on mandrel bar, method of controlling film thickness of lubricant on mandrel bar, and method of manufacturing seamless steel tube
    38.
    发明专利
    Method of applying lubricant on mandrel bar, method of controlling film thickness of lubricant on mandrel bar, and method of manufacturing seamless steel tube 有权
    润滑剂在人造棒上的应用方法，控制带钢润滑剂膜厚度的方法及制造无缝钢管的方法

    公开(公告)号：JP2008161915A

    公开(公告)日：2008-07-17

    申请号：JP2006354658

    申请日：2006-12-28

    Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

    Inventor： SAITO KENICHI ,  IIDA SUMIO

    IPC: B21B25/04 ,  B21B17/02

    CPC classification number: B21B25/04 ,  B21B3/02 ,  B21B19/04 ,  B21B23/00

    Abstract: PROBLEM TO BE SOLVED: To provide a stably high-quality seamless steel tube capable of preventing occurrence of seizing marks and internal flaws.
    SOLUTION: In the method of applying a lubricant on a mandrel bar, the film thickness of the lubricant is decided from a predetermined master curve of the amount of mica and the film thickness of the lubricant when applying a nongraphitic lubricant composed of, by mass, the oxide layered compound of 10-70% and baric acid of 30-90% to a mandrel bar. In the method of manufacturing the seamless steel tube, the seamless steel tube is manufactured by using the mandrel bar on which the lubricant is applied by the method.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种能够防止发生卡痕和内部缺陷的稳定的高品质无缝钢管。 解决方案：在将润滑剂涂布在芯棒上的方法中，润滑剂的膜厚度由使用非均匀润滑剂构成的非石墨润滑剂时，由预定的云母量的主曲线和润滑剂的膜厚决定， ，10-70％的氧化物层状化合物和30-90％的硼酸盐。 在制造无缝钢管的方法中，通过使用通过该方法使用润滑剂的芯棒来制造无缝钢管。 版权所有（C）2008，JPO＆INPIT

    Manufacturing method of seamless pipe and cleaning equipment
    39.
    发明专利
    Manufacturing method of seamless pipe and cleaning equipment 有权
    无缝管和清洁设备的制造方法

    公开(公告)号：JP2006263817A

    公开(公告)日：2006-10-05

    申请号：JP2006045936

    申请日：2006-02-22

    Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

    Inventor： NAKAIKE HIROTSUGU ,  HIDAKA YASUYOSHI ,  IIDA SUMIO ,  KUSUDA HIROKI ,  SAKIYAMA MASAMI

    IPC: B21B25/04 ,  B21B25/06

    Abstract: PROBLEM TO BE SOLVED: To manufacture a seamless pipe while effectively suppressing carburization on the seamless pipe without causing a disturbance in the operation.
    SOLUTION: The process comprises the steps of: cleaning of a transfer equipment installed at least between a lubricant coating device 7 located in a transfer step of a mandrel bar B and the entrance of the mandrel mill 8; cleaning of the mandrel bar B used for stretch-rolling in the upstream of the lubricant coating device 7; and coating of a non-graphite lubricant over the mandrel bar B by the lubricant coating device 7. The seamless pipe is manufactured while rinsing the transfer equipment and the mandrel bar B respectively so that both formula (1): 0.08×C1+0.05×C2≤3, and formula (2): 3≤C1+C2≤50 are satisfied, where C2(g/m
    2 ) is graphite quantity adhered to the surface of the mandrel bar B prior to the stretch-rolling; C1(g/m
    2 ) is carbon content included in an organic binder of the lubricant.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：制造无缝管，同时有效地抑制无缝管上的渗碳，而不会造成操作的干扰。 解决方案：该方法包括以下步骤：清洁至少安装在位于芯棒B的转移步骤中的润滑剂涂覆装置7和芯棒式无缝管轧机8的入口之间的转移设备; 在润滑剂涂布装置7的上游清洁用于拉伸轧制的芯棒B; 并且通过润滑剂涂布装置7在芯棒B上涂覆非石墨润滑剂。分别在分别漂洗转移设备和芯棒B的同时制造无缝管，使得式（1）：0.08×C1 + 0.05× C2≤3，式（2）：3≤C1+C2≤50，其中C2（g / m 2 ）是在芯棒B的表面之前附着的石墨量 拉伸轧制; C1（g / m 2 ）是包含在润滑剂的有机粘合剂中的碳含量。 版权所有（C）2007，JPO＆INPIT

    Method and device for manufacturing seamless steel tube
    40.
    发明专利
    Method and device for manufacturing seamless steel tube 有权

    公开(公告)号：JP2004034072A

    公开(公告)日：2004-02-05

    申请号：JP2002193529

    申请日：2002-07-02

    Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

    Inventor： IIDA SUMIO ,  NAKAIKE HIROTSUGU

    IPC: B21B25/04 ,  B21B17/02

    Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a seamless steel tube by which the seizing of a mandrel bar is reliably prevented when the seamless steel tube is manufactured by using a mandrel mill.
    SOLUTION: A specified total amount of lubricant is applied to the surface of the mandrel bar 2 twice, wherein the amount the lubricant per application is adjusted to be not more than a specific amount M ( g/m
    2 ) which is determined on the basis of the maximum value T (°C) of the surface temperature of the mandrel bar 2. Then the seamless steel tube is manufactured by performing rolling by inserting the mandrel bar 2 into the inside of a tube stock 4. Here, T is given by T≤120-10 ×(M-100)/5.
    COPYRIGHT: (C)2004,JPO

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