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    Mandrel bar for hot working of seamless pipe
    71.
    发明专利
    Mandrel bar for hot working of seamless pipe 审中-公开
    MANDREL棒用于热无缝管的工作

    公开(公告)号：JP2005349451A

    公开(公告)日：2005-12-22

    申请号：JP2004174316

    申请日：2004-06-11

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

    Inventor： ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI ,  IIDA SUMIO

    IPC: B21B25/00 ,  B21B25/04 ,  C23C26/00

    Abstract: PROBLEM TO BE SOLVED: To surely and greatly improve durable life of a mandrel bar for hot working of seamless pipes even in the case of hot rolling of seamless steel pipes made of stainless steel which requires severe hot rolling conditions.
    SOLUTION: The mandrel bar for hot working of seamless pipes comprises a first layer on the surface, which first layer contains at least one kind of Fe
    2 O
    3 , Fe
    3 O
    4 , and FeO or FeCr
    2 O
    4 and has an arithmetical mean roughness Ra of 0.05 to 5 μm at the surface and has a thickness of 5 to 50 μm, and a second layer composed of an inorganic coating film coated on the first layer, which inorganic coating film contains 10 to 80 mass% of a particulate oxide-based layered compound and the remainder composed of at least one or more kinds of alkali metal salt of boric acid or amine salt, and has a thickness of 10 to 500 μm.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：即使在需要严格的热轧条件的由不锈钢制成的无缝钢管的热轧的情况下，也可以大大提高用于无缝管热加工的芯棒的耐用寿命。 解决方案：用于无缝管热加工的芯棒包括表面上的第一层，该第一层含有至少一种Fe 2 O 3 ， FeO 3 / SB> 4 ，FeO或FeCr 2 4 ，其算术平均粗糙度Ra为0.05〜 5μm，厚度为5〜50μm，第2层由无机涂膜构成，该无机涂膜含有10〜80质量％的氧化物系微粒化层状化合物和 剩余部分由至少一种以上的硼酸或胺盐的碱金属盐构成，其厚度为10〜500μm。 版权所有（C）2006，JPO＆NCIPI

    PRODUCTION METHOD FOR HOT-ROLLED STEEL PLATE WITH EXCELLENT SURFACE ASPECT
    72.
    发明专利
    PRODUCTION METHOD FOR HOT-ROLLED STEEL PLATE WITH EXCELLENT SURFACE ASPECT 失效

    公开(公告)号：JP2002346610A

    公开(公告)日：2002-12-03

    申请号：JP2001151965

    申请日：2001-05-22

    Applicant: SUMITOMO METAL IND

    Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO

    IPC: B21B3/00 ,  B21B45/08 ,  C22C38/00 ,  C22C38/06

    Abstract: PROBLEM TO BE SOLVED: To provide a production method to produce a steel plate with less scale-bite mark without controlling chemical components and installing additional facilities. SOLUTION: This is a finishing rolling method to roll a steel plate in a hot status whose chemical composition is, in terms of mass percentage, C: 0.03-0.2%, Si: 0.005-0.1%, Mn: 0.1-2.0%, sol.Al: 0.08% max. and Fe and impurities: balance, and is a production method for a hot-rolled steel plate to perform a finishing rolling by controlling a surface temperature of steel plate not to become less than the temperature T deg.C calculated by the following formulas A1 or A2 at the time of descaling by high-pressure water jet before finishing rolling and during rolling. In case Mn content in steel plate is below 0.5%: T deg.C=600-300×(Mn)...(A1) In case Mn content in steel plate is over 0.5%: T deg.C=450-15×(Mn)...(A2).

    METHOD FOR CONDITIONING SURFACE OF SLAB
    73.
    发明专利
    METHOD FOR CONDITIONING SURFACE OF SLAB 失效

    公开(公告)号：JP2001300625A

    公开(公告)日：2001-10-30

    申请号：JP2001036769

    申请日：2001-02-14

    Applicant: SUMITOMO METAL IND

    Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO

    IPC: B24C1/00 ,  B21B45/00 ,  B21B45/06

    Abstract: PROBLEM TO BE SOLVED: To provide a conditioning method by which oxidized scale and defective parts on the surface of a slab before hot working are removed efficiently and easily. SOLUTION: By jetting granules onto the surface of the slab of alloy steel in the temperature range of 500-1300 deg.C, the oxidized scale is removed and also the defective parts on the surface of the slab is removed. When the temperature range of the slab is 500-1100 deg.C and the jetting time t (min) of the granule is not less than the time expressed by the equation 1, the oxidized scale and defective parts which are present on the surface of the slab are very efficiently removed. t=106×(300-Y)/(400×Ts×X)...1, wherein, Ts is the temperature of the slab, X is the volume of the jetted granule (kg.m-2.min-1) and Y is the average jetting speed of the granule (m.s-1).

    Antioxidant and method for producing metal material
    75.
    发明专利
    Antioxidant and method for producing metal material 有权
    用于生产金属材料的抗氧化剂和方法

    公开(公告)号：JP2012092207A

    公开(公告)日：2012-05-17

    申请号：JP2010239950

    申请日：2010-10-26

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

    Inventor： SHIMODA KAZUMUNE ,  MATSUMOTO KEIJI ,  HIDAKA YASUYOSHI ,  YAMAKAWA TOMIO ,  AKIYAMA SHUICHI ,  KATO TAKAHISA

    IPC: C09K15/02 ,  C10M103/06 ,  C10M125/26 ,  C10N20/02 ,  C10N30/00 ,  C10N30/10

    CPC classification number: C03C8/22 ,  B05D3/02 ,  B21B45/0242 ,  C03C3/087 ,  C03C3/093 ,  C03C8/02 ,  C03C8/04 ,  C03C8/14 ,  C03C8/16 ,  C09K15/02 ,  C21D1/68 ,  C21D1/70 ,  C21D8/0284 ,  C21D8/10 ,  C23C24/082 ,  C23C24/10

    Abstract: PROBLEM TO BE SOLVED: To provide an antioxidant having superior sagging resistance and peeling resistance.SOLUTION: The antioxidant according to the present embodiment contains: a plurality of glass frits having different softening points; Gairome clay ; and bentonite and/or sepiolite. The antioxidant applied to a metal material surface does not readily sag, owing to Gairome clay. Furthermore, owing to the bentonite and/or sepiolite, the antioxidant does not readily peel from the metal material surface. The antioxidant preferably contains 6 parts by weight or more of Gairome clay with respect to 100 parts by weight of a high-temperature glass frit, and contains 4 parts by weight or more of bentonite and/or sepiolite with respect to 100 parts by weight of the high-temperature glass frit.

    Abstract translation: 要解决的问题：提供具有优异的下垂阻力和耐剥离性的抗氧化剂。 解决方案：根据本实施方案的抗氧化剂包含：具有不同软化点的多个玻璃料; 盖洛尔粘土 膨润土和/或海泡石。 由于Gairome粘土，施加到金属材料表面的抗氧化剂不容易下垂。 此外，由于膨润土和/或海泡石，抗氧化剂不容易从金属材料表面剥离。 相对于100重量份的高温玻璃料，抗氧化剂优选含有6重量份以上的Gairome粘土，相对于100重量份的膨润土和/或海泡石，含有4重量份以上的膨润土和/或海泡石 高温玻璃料。 版权所有（C）2012，JPO＆INPIT

    Mandrel bar for hot seamless tube and method of treating its surface
    76.
    发明专利
    Mandrel bar for hot seamless tube and method of treating its surface 有权
    用于热无缝管的MANDREL BARB及其处理表面的方法

    公开(公告)号：JP2009045632A

    公开(公告)日：2009-03-05

    申请号：JP2007211466

    申请日：2007-08-14

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

    Inventor： NAKAIKE HIROTSUGU ,  IIDA SUMIO ,  HIDAKA YASUYOSHI

    IPC: B21B25/04 ,  C23C8/60

    Abstract: PROBLEM TO BE SOLVED: To provide a mandrel bar for hot seamless tubes which displays excellent seizure resistance by synergism of a scale layer and a nitrided diffusion layer which are formed on its surface.
    SOLUTION: (1) This mandrel bar for hot seamless tubes is provided with the scale layer containing Fe oxides and having the thickness of 3-20 μm and the nitrided diffusion layer having the thickness of 50-500 μm under this scale layer on the surface. (2) In this method for treating the surface of the mandrel bar for hot seamless tubes after applying dicyandiamide and/or melamine of ≥50 g/m
    2 of nitriding agents over the entire periphery of the entire length or the partial length of a material to be treated and covering the applied place by using a metallic thin film and drying, heat treatment is performed at the heating temperature of 500-650°C and for the heating time of 2-6 hour in an oxidizing atmosphere. As for the covering method, the mandrel bar is preferably covered with the metallic thin film inside which a heat insulating material coated with the nitriding agent is provided.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于热无缝管的芯棒，其通过在其表面上形成的氧化层和氮化扩散层的协同作用而显示出优异的耐发泡性。 解决方案：（1）该热无缝管芯棒具有厚度为3-20μm的Fe氧化物的鳞片层，厚度为50-500μm的氮化扩散层在该刻度层 在表面上。 （2）在该全长的整个周边应用双氰胺和/或三聚氰胺≥50g/ m 2的氮化剂的方法，在热无缝管芯棒的表面处理方法中， 或待处理材料的部分长度，并通过使用金属薄膜覆盖所施加的位置并进行干燥，在500-650℃的加热温度下进行加热处理，并在2-6小时的加热时间 氧化气氛。 对于覆盖方法，芯棒优选用金属薄膜覆盖，在金属薄膜内设置涂覆有氮化剂的隔热材料。 版权所有（C）2009，JPO＆INPIT

    Method for producing stainless steel tube
    79.
    发明专利
    Method for producing stainless steel tube 有权
    生产不锈钢管的方法

    公开(公告)号：JP2007167912A

    公开(公告)日：2007-07-05

    申请号：JP2005369830

    申请日：2005-12-22

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

    Inventor： MATSUMOTO SATOSHI ,  ONO TOSHIHIDE ,  HIDAKA YASUYOSHI ,  NAKAIKE HIROTSUGU

    IPC: B21B17/14 ,  B21B23/00 ,  B21B25/04 ,  C21D8/10 ,  C22C38/00 ,  C22C38/18 ,  C22C38/58

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a stainless steel tube where internal carburization caused by mandrel mill rolling is suppressed, and further, softening heat treatment for the tube stock before cold working can be obviated. SOLUTION: In the method for producing a stainless steel tube where a tube stock obtained by subjecting a stainless steel comprising, by mass, ≤0.04% C and 10 to 30% Cr as the stock to piercing, mandrel mill rolling using a non-graphite based lubricant, reheating and stretch reducer rolling is cold-rolled, the stretch reducer rolling is performed at a finishing temperature of 870 to 1,050°C, and subsequently, the cold rolling is performed with softening heat treatment obviated. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种抑制由芯棒式无缝管轧机轧制引起的内部渗碳的不锈钢管的制造方法，并且可以避免冷加工前的管坯的软化热处理。 解决方案：在制造不锈钢管的方法中，其中通过使质量为≤0.04％C和10至30％Cr的不锈钢作为坯料进行穿孔而获得的管坯，使用 非石墨基润滑剂，再加热和拉伸减速机轧制是冷轧的，拉伸减速机的轧制在870-1050℃的终轧温度下进行，随后通过软化热处理进行冷轧。 版权所有（C）2007，JPO＆INPIT

    Steel plate superior in laser sectility and manufacturing method therefor
    80.
    发明专利
    Steel plate superior in laser sectility and manufacturing method therefor 有权
    钢板超级激光器及其制造方法

    公开(公告)号：JP2006219712A

    公开(公告)日：2006-08-24

    申请号：JP2005033133

    申请日：2005-02-09

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

    Inventor： OKADA HIKARI ,  SATO MORITSUGU ,  URABE TAKESHI ,  KOBAYASHI MAKOTO ,  KUBO SATOSHI ,  MAEDA TAKAO ,  SETA ICHIRO ,  FUJIWARA TOMOYA ,  HIDAKA YASUYOSHI

    IPC: C22C38/00 ,  B21B1/38 ,  C21D8/02 ,  C22C38/16 ,  C22C38/58

    Abstract: PROBLEM TO BE SOLVED: To provide a steel plate to be cut with a laser, which stably shows excellent laser sectility and enables the unmanned driving of a laser cutting machine in the nighttime, and to provide a manufacturing method therefor.
    SOLUTION: The slab of the steel plate includes, by mass%, 0.03-0.50% Cu, 0.02-0.50% Ni while satisfying the expression of mass ratio Ni/Cu ≥ 0.5, and further 0.05% or more Si. The method for manufacturing the steel plate comprises the steps of: heating the above slab so that the surface temperature can reach or exceed a melting point of the Cu-Ni alloy having the same composition as the Ni/Cu mass ratio in the above steel, at least for a period of time when the slab is heated; cooling the heated slab until the surface temperature drops to the melting point of the Cu-Ni alloy or lower; then removing the scale by spouting water onto the slab; and hot-rolling the descaled slab into a predetermined plate thickness. The manufactured steel plate acquires a scale/metal mixture layer with a thickness of 5 to 30 μm, which consists of the surface scale layer and a mixture layer that exists in the vicinity of a boundary between the scale layer and a steel base metal and contains metallic fine particles formed of the Fe-Cu-Ni-based alloy dispersed in the scale.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种激光切割的钢板，其稳定地显示出优异的激光分辨率，并能够在夜间无人驾驶激光切割机，并提供其制造方法。 钢板的质量比以质量％计含有0.03-0.50％的Cu，0.02-0.50％的Ni，同时满足Ni / Cu≥0.5的质量比和进一步的0.05％以上的Si。 制造钢板的方法包括以下步骤：对上述钢板进行加热，以使表面温度达到或超过与上述钢中Ni / Cu质量比相同组成的Cu-Ni合金的熔点， 至少在板坯加热的一段时间内; 冷却加热的板坯，直到表面温度下降到Cu-Ni合金的熔点以下; 然后通过将水喷射到板上去除垢; 并将所述除鳞的板坯热轧成预定的板厚。 制造的钢板获得厚度为5〜30μm的鳞屑/金属混合物层，其由表层标准层和存在于鳞片层和钢基金属之间的边界附近的混合层组成，并且含有 金属细颗粒由分散在氧化皮中的Fe-Cu-Ni基合金形成。 版权所有（C）2006，JPO＆NCIPI

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