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    Method for manufacturing seamless steel pipe
    52.
    发明专利
    Method for manufacturing seamless steel pipe 有权
    制造无缝钢管的方法

    公开(公告)号：JP2006159207A

    公开(公告)日：2006-06-22

    申请号：JP2004349889

    申请日：2004-12-02

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

    Inventor： IIDA SUMIO ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI ,  INAGE TAKAMITSU ,  NAKAIKE HIROTSUGU

    IPC: B21B25/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a seamless steel pipe by the Mannesmann-mandrel mill process, which method can suppress the generation of carburized layer on the inside surface of the pipe.
    SOLUTION: The method for manufacturing the seamless steel pipe comprises piercer-rolling a steel billet and elongation-rolling an obtained hollow shell while inserting a mandrel bar therein with a mandrel mill, wherein the rolling operation in elongation-rolling is carried out so as to satisfy the following condition: (0.015×E+0.0002×T-0.02)×C≤2, where E is an elongation ratio, T is a time (s) from the completion of the mandrel mill rolling until the stripping, and C is a quantity (g/m
    2 ) of carbon stuck on the surface of the mandrel bar.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：为了提供一种通过Mannesmann-芯棒式无缝管轧制工艺制造无缝钢管的方法，该方法可以抑制管道内表面上的渗碳层的产生。 解决方案：无缝钢管的制造方法包括对钢坯进行穿孔机轧制，并且在将芯棒在芯棒式无缝管轧机中插入的同时对获得的中空壳进行伸长轧制，其中进行伸长轧制中的轧制操作 满足以下条件：（0.015×E + 0.0002×T-0.02）×C≤2，其中E是伸长率，T是从芯棒式无缝管轧机轧制直到汽提完成的时间， C是碳棒表面附着的碳的量（g / m×SP> 2 ）。 版权所有（C）2006，JPO＆NCIPI

    MARTENSITIC STAINLESS STEEL
    53.
    发明专利
    MARTENSITIC STAINLESS STEEL 失效

    公开(公告)号：JP2001123249A

    公开(公告)日：2001-05-08

    申请号：JP33447999

    申请日：1999-11-25

    Applicant: SUMITOMO METAL IND

    Inventor： AMAYA TAKASHI ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI

    IPC: B24C1/00 ,  B21B45/04 ,  B21C37/30 ,  B21C43/00 ,  C22C38/00 ,  C22C38/44

    Abstract: PROBLEM TO BE SOLVED: To produce martensitic stainless steel excellent in rust generation resistance in an atmospheric environment and, further, excellent in sulfide stress cracking resistance in an oil well environment in the surface condition as-being subjected to shot blast treatment. SOLUTION: In this martensitic stainless steel, Cr content, decided by the relational formula between the frequency of the peaks Yp in the histogram of the number of picture elements obtained by analyzing the photographed image of the surface in the state of mill scales to be left after mill scale removing treatment by a shot blast method and the gradient value Xp showing the frequency of the peaks Yp is 9 to 15 mass %.

    Glass lubricant for making tube by hot extrusion of metallic material and method of making tube by hot extrusion using the same
    55.
    发明专利
    Glass lubricant for making tube by hot extrusion of metallic material and method of making tube by hot extrusion using the same 审中-公开
    用于通过热挤压金属材料制造管的玻璃润滑剂和使用其进行热挤压制造管的方法

    公开(公告)号：JP2010227997A

    公开(公告)日：2010-10-14

    申请号：JP2009081618

    申请日：2009-03-30

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

    Inventor： MATSUMOTO KEIJI ,  SHIMODA KAZUMUNE ,  HIDAKA YASUYOSHI ,  MURAKAMI KOSUKE ,  TAJIMA JUNPEI

    IPC: B21C23/32

    Abstract: PROBLEM TO BE SOLVED: To provide a glass lubricant for making tubes by hot extrusion, which improves the stripping resistance of glass, reduces the rough surface of hot extruded tube by pickling and the pickling cost, and also suppresses defects such as forced marks and seizure.
    SOLUTION: The glass lubricant for making tubes by hot extrusion of the metallic material is composed of a silicate glass lubricant which is an alkali metal oxide of 12-30 mass% in total quantity and the total quantity of one or more kinds of Al
    2 O
    3 , CaO and MgO is 20-40 mass%. However, K
    2 O is defined as ≥1/3 of the total quantity of the alkali metal oxide, and Al
    2 O
    3 is defined as not ≥1/4 of the total quantity of one or more kinds of Al
    2 O
    3 , CaO and MgO. In this glass lubricant for making tubes by hot extrusion, it is desired to be composed of the silicate glass lubricant including B
    2 O
    3 of ≤25 mass% and it is suitable to use as the external lubricant of the metallic material which is worked by the hot extrusion.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：为了提供通过热挤压制造管的玻璃润滑剂，其提高了玻璃的剥离性，通过酸洗和酸洗成本降低了热挤压管的粗糙表面，并且还抑制了强制性的缺陷 标记和扣押。 解决方案：用于通过金属材料的热挤压制造管的玻璃润滑剂由总量为12-30质量％的碱金属氧化物的硅酸盐玻璃润滑剂和一种或多种 另外，CaO和MgO为20〜40质量％。 然而，K <2> O定义为碱金属氧化物总量的≥1/ 3，并且定义了Al 2 O 3 一种或多种Al 2 O 3 ，CaO和MgO的总量不得≥1/ 4。 在用于通过热挤压制造管的玻璃润滑剂中，期望由包含≤25质量％的B 2 3 的硅酸盐玻璃润滑剂构成，并且它是合适的 用作通过热挤压加工的金属材料的外部润滑剂。 版权所有（C）2011，JPO＆INPIT

    Glass lubricant for hot extrusion, and hot extrusion method for metallic material and production method for metal tube using the same
    56.
    发明专利
    Glass lubricant for hot extrusion, and hot extrusion method for metallic material and production method for metal tube using the same 有权
    用于热挤压的玻璃润滑剂和用于金属材料的热挤压方法和使用其的金属管的生产方法

    公开(公告)号：JP2009090326A

    公开(公告)日：2009-04-30

    申请号：JP2007263207

    申请日：2007-10-09

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

    Inventor： MATSUMOTO KEIJI ,  SHIMODA KAZUMUNE ,  HIDAKA YASUYOSHI ,  MURAKAMI KOSUKE ,  TAJIMA JUNPEI

    IPC: B21C23/32 ,  B21C23/00 ,  C10M103/00 ,  C10M103/06 ,  C10N20/00 ,  C10N20/02 ,  C10N30/00 ,  C10N40/24

    Abstract: PROBLEM TO BE SOLVED: To provide a glass lubricant for hot extrusion with which glass remaining in the material to be worked after hot extrusion and glass stuck to the inside of a container can be efficiently removed. SOLUTION: (1) Disclosed is a glass lubricant for hot extrusion having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below. (2) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and/or an inside lubricant and having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below, and whose viscosity at 1,000 to 1,250°C is 10 2.5 to 10 4 poise. (3) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below, and whose viscosity at 1,000 to 1,250°C is 10 0 to 10 2.5 poise. (4) Disclosed are a hot extrusion method for a metallic material using the lubricant, and a production method suitably applied to a metal tube, particularly, to a seamless tube. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于热挤压的玻璃润滑剂，其可以有效地除去在热挤压之后残留在待加工材料中的玻璃和粘附在容器内部的玻璃。 解决方案：（1）公开了线性膨胀系数为80×10 -7 （cm / cm /℃）以下的热挤压用玻璃润滑剂。 （2）公开了一种用于热挤出的玻璃润滑剂，其用作前润滑剂和/或内部润滑剂，并且具有80×10 -7 （cm / cm /℃）的线膨胀系数，或 并且其在1,000至1250℃下的粘度为10 2.5 至10 4 。 （3）公开了一种用于热挤出的玻璃润滑剂，其用作前润滑剂，线膨胀系数为80×10 -6（cm / cm /℃）或更低，其粘度在 1,000至1,250℃是10 0 至10 2.5 。 （4）公开了一种使用该润滑剂的金属材料的热挤压方法，适用于金属管，特别是无缝管的制造方法。 版权所有（C）2009，JPO＆INPIT

    Method for manufacturing stainless steel tube
    57.
    发明专利
    Method for manufacturing stainless steel tube 有权
    制造不锈钢管的方法

    公开(公告)号：JP2006122951A

    公开(公告)日：2006-05-18

    申请号：JP2004314391

    申请日：2004-10-28

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

    Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  IIDA SUMIO

    IPC: B21B17/02 ,  B21B17/14 ,  B21B25/04 ,  B21B45/02 ,  B21B45/04 ,  C21D8/10 ,  C21D9/08 ,  C22C38/00 ,  C22C38/58

    Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a stainless steel tube by which abnormal oxidized scale which is generated on the inside of the steel tube is suppressed and also the scale is efficiently removed by rapid cooling after heat treatment.
    SOLUTION: This method is a manufacturing method of the stainless steel tube in which the heat treatment is applied to the stainless steel tube which is manufactured by mandrel mill rolling and stretch reducer rolling and the scale generated on the surface is removed by pickling treatment. In this manufacturing method of the stainless steel tube, when expressing by a relational diagram taking the C equivalent weight (g/m
    2 ) in the mandrel mill rolling as the X-axis and the heating temperature (°C) of the stainless steel tube rolled by using the mandrel bar as the Y-axis, at the heat treatment of the stainless steel tube, after heating the stainless steel tube under the conditions within the range in which respective points of A, B, C, D, E and F in the relational diagram are connected with straight lines, the stainless steel tube is rapidly cooled.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种不锈钢管的制造方法，其中抑制了在钢管内部产生的异常氧化皮，并且通过热处理后的快速冷却有效地除去了氧化皮。 解决方案：该方法是对通过芯棒式无缝管轧机轧制和拉伸减速机轧制制造的不锈钢管进行热处理的不锈钢管的制造方法，并且通过酸洗除去在表面上产生的氧化皮 治疗。 在这种不锈钢管的制造方法中，在将芯棒式无缝管轧机中的C当量（g / m 2 ）作为X轴的加热温度（°） C）通过使用芯棒作为Y轴轧制的不锈钢管，在不锈钢管的热处理下，在不锈钢管的各个点，A，B， 关系图中的C，D，E和F与直线连接，不锈​​钢管快速冷却。 版权所有（C）2006，JPO＆NCIPI

    Method of producing hot rolled steel sheet
    58.
    发明专利
    Method of producing hot rolled steel sheet 有权
    生产热轧钢板的方法

    公开(公告)号：JP2003293041A

    公开(公告)日：2003-10-15

    申请号：JP2002096067

    申请日：2002-03-29

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

    Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  OKADA YASUTAKA

    IPC: B21B3/00 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method of preventing the occurrence of biting flaws on hot rolling of a B-containing steel sheet.
    SOLUTION: On hot rolling of steel containing, by mass, 0.03 to 0.10% C, 0.005 to 0.01% Si, 0.1 to 0.5% Mn, ≤0.03% P, ≤0.02% S and 0.0005 to 0.003% B, and the balance Fe with impurities, finish rolling is performed under the condition that inequality (1) is satisfied in the case the Si content is 0.005 to 0.01%, and inequality (2) is satisfied in the case the Si content is >0.01 to 0.10%, respectively: T

    Abstract translation: 要解决的问题：提供一种防止含B钢板的热轧发生咬合缺陷的方法。 解决方案：在钢的热轧中，含有0.03〜0.10％的C，0.005〜0.01％的Si，0.1〜0.5％的Mn，≤0.03％的P，≤0.02％的S和0.0005〜0.003％的B，以及 在Si含量为0.005〜0.01％的情况下，满足不等式（1）的条件下，在Si含量> 0.01〜0.10的情况下，进行精加工余量为杂质的精轧，满足不等式（2） ％：T <（120 / t）+900（1），T <120 / t）+920（2）; 其中，t是将钢板通过精轧机的一个轧制辊与随后的轧制辊之间的间隔所需的时间（秒）（在高压除水器位于轧制辊之前的情况下， 除鳞机和随后的轧辊）; T是每个间距钢板的最高表面温度（℃）。 版权所有（C）2004，JPO

    MANUFACTURE OF SEAMLESS 13-CHROMIUM BASE STAINLESS STEEL TUBE COVERED WITH MILL SCALE
    60.
    发明专利
    MANUFACTURE OF SEAMLESS 13-CHROMIUM BASE STAINLESS STEEL TUBE COVERED WITH MILL SCALE 失效

    公开(公告)号：JPH10128412A

    公开(公告)日：1998-05-19

    申请号：JP28391396

    申请日：1996-10-25

    Applicant: SUMITOMO METAL IND

    Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO

    IPC: B21B3/02 ,  B21B17/14 ,  B21B19/04 ,  B21B45/08

    Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of 13 Cr base stainless steel tube covered with mill scale excellent in surface property and corrosion resis tance by controlling scale in descaling and rolling. SOLUTION: About a hollow tube stock of stainless steel containing 11-15wt.% Cr, the outer layer scale of scale consisting of an outer layer and inner layer is removed with a descaler. The thickness of 0.1-50μm in the inner layer scale consisting essentially of a spinel type oxide FeCr2 O4 is left and elongating is executed at a draft of >=40% or, about a tube stock for finish rolling, 0.1-50μm of the inner layer scale containing the spinel type oxide as a main component and Fe2 SiO4 as an assistant composition is left and finish rolling is executed.

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