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    BEARING MATERIAL
    1.
    发明公开
    BEARING MATERIAL 审中-公开
    LAGERMATERIALIEN

    公开(公告)号：EP1354971A4

    公开(公告)日：2006-01-04

    申请号：EP02716355

    申请日：2002-01-24

    申请人： JFE STEEL CORP ,  KOYO SEIKO CO

    发明人： MATSUZAKI AKIHIRO ,  IWAMOTO TAKASHI ,  YAMAZAKI YOSHIO ,  KIZAWA KATSUHIKO ,  GOTO MASAO

    IPC分类号： C22C38/00 ,  C21D9/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/60

    CPC分类号： C22C38/002 ,  C21D9/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/60 ,  F16C33/121

    摘要： A steel for a bearing, characterized in that the steel has a chemical composition in mass %: C: 0.95 to 1.10 %, Si: 0.15 to 0.70 %, Mn: 1.15 % or less, Cr: 0.90 to 1.60 %, P: 0.025 % or less, S: 0.025 %, O: 0.0012 % and the balance: Fe and inevitable impurities (S and O are elements forming non-metallic inclusions), in that the maximum diameter of oxide type non-metallic inclusions is more than 10 mu m and not more than 15 mu m in the case of an examination area of 320 mm and the number of inclusions having a diameter of a corresponding circle of 3 mu m or more is 250 or less in the case of an examination area of 320 mm , and in that the steel contains 0.020 mass % or less of AlN and/or the number of sulfide type non-metallic inclusions having a thickness of 1 or more is 1200 or less in the case of an examination area of 320 mm . The steel for a bearing can be produced without the use of a special secondary refining process at a low cost and also has a long life, and thus can be used for general use. ( mu m)

    STEEL MATERIAL FOR MECHANICAL STRUCTURE EXCELLENT IN SUITABILITY FOR ROLLING, QUENCHING CRACK RESISTANCE, AND TORSIONAL PROPERTY AND DRIVE SHAFT
    5.
    发明公开
    STEEL MATERIAL FOR MECHANICAL STRUCTURE EXCELLENT IN SUITABILITY FOR ROLLING, QUENCHING CRACK RESISTANCE, AND TORSIONAL PROPERTY AND DRIVE SHAFT 有权
    钢材以优异的轧制性，威慑撕裂强度和扭转特性和传动轴的机械结构

    公开(公告)号：EP1553197A4

    公开(公告)日：2006-07-05

    申请号：EP02790877

    申请日：2002-12-26

    申请人： JFE STEEL CORP ,  NTN TOYO BEARING CO LTD

    发明人： OMORI YASUHIRO ,  MATSUZAKI AKIHIRO

    IPC分类号： C22C38/00 ,  C21D9/28 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50

    CPC分类号： C22C38/42 ,  C22C38/001 ,  C22C38/44 ,  C22C38/50

    摘要： A steel material for mechanical structures which comprises, in terms of percent by weight, 0.35 to 0.50% carbon, up to 0.15% silicon, 0.2 to 1.1% manganese, up to 0.020% phosphorus, 0.005 to 0.035% sulfur, more than 0.1 to 0.2% chromium, 0.05 to 0.5% molybdenum, more than 0.01 to 0.05% titanium, 0.01 to 0.05% aluminum, up to 0.01% nitrogen, 0.0005 to 0.0050% boron, 0.06 to 0.25% copper, 0.05 to 0.2% nickel, and iron and unavoidable impurities as the remainder, and which has a value of LD shown by the following equation (1) of 120 or lower.

    摘要翻译： 具有旋转成型，抗扭性能的良好的加工性的机器结构钢产品，和耐淬裂性的所有其使用在电炉代替高炉制造的设置和其去除混入元素的不利影响。 提供了一种具有优异的静态强度和疲劳强度的驱动轴。 特别地，所述机械结构用钢产品包含：以质量％计上，C：0.35％至0.50％; 的Si：0.15％以下; 锰：0.20％至1.1％; P：0.02％或更低; S：0.005％至0.035％; Cr：大于0.1％至0.2％; 沫：0.05％至0.5％; 的Ti：0.01％〜0.05％; 铝：0.01〜0.05％; N：0.01％以下; B：0.0005％〜0.0050％; 的Cu：0.06％〜0.25％; 及Ni：0.05％至0.2％，此外，上述的组合物进行调节，以在由下式表示LD值那样（1）SATIS外资企业120或更小。 <= DF NUM “（1）”> LD =0.569xä7.98x（C）海平面<2.1>×（1 + 4.1Mn）的上方。 （1 + 2.83P）。 （1-0.62S）。 （1 + 0.64Si）。 （1 + 2.33Cr）。 （1 + 0.52Ni）。 （1 + 3.14Mo）。 （1 + 0.27Cu）。 （1 + 1.5（0.9-C））U + 52.6 在上述等式中，C，锰，磷，硫，硅，铬，镍，钼，和Cu的方程中每个指示 所述respectivement元素的含量（质量％）。

    ELECTRICAL SHEET OF EXCELLENT MAGNETIC CHARACTERISTICS AND METHOD OF MANUFACTURING THE SAME
    6.
    发明公开
    ELECTRICAL SHEET OF EXCELLENT MAGNETIC CHARACTERISTICS AND METHOD OF MANUFACTURING THE SAME 审中-公开
    随着对优异的磁性能和方法电工钢板及其

    公开(公告)号：EP1001042A4

    公开(公告)日：2006-04-12

    申请号：EP99919645

    申请日：1999-05-18

    申请人： JFE STEEL CORP

    发明人： MATSUZAKI AKIHIRO ,  KONDO OSAMU ,  YAMASHITA TAKAKO ,  TAKAJO SHIGEAKI

    IPC分类号： C21D8/12 ,  C22C38/02 ,  C22C38/06 ,  C22C38/00

    CPC分类号： C22C38/02 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1272 ,  C22C38/06

    摘要： An electrical sheet used for an AC magnetic core and having excellent magnetic characteristics in two directions, i.e., in a rolling direction and in a direction perpendicular thereto, and a method of manufacturing the same. The electrical sheet is characterized in that a ratio of {100} orientation strength to a random orientation strength of a recrystallized cold rolled plate structure is not less than 2.0 and a ratio of {011} orientation strength to a random orientation strength thereof 2.0 SIMILAR 10.0. A ratio of //ND orientation strength to a random orientation strength is preferably not more than 2.0. The method of manufacturing the said electrical sheet is characterized in that a silicon steel slab is hot rolled so that a ratio of (015)[100] orientation strength to a random orientation strength of a recrystallized hot rolled plate structure becomes not less than 3.0, whereby effectively optimizing a structure obtained after the completion of hot rough rolling, hot finishing rolling conditions, a steel plate structure obtained at an outlet side of a final stand of a hot finishing rolling mill and an amount of effective accumulated strain of the steel plate just entering the final stand of the hot finishing rolling mill.

    STEEL PRODUCT FOR INDUCTION HARDENING, INDUCTION-HARDENED MEMBER USING THE SAME, AND METHODS FOR PRODUCING THEM
    8.
    发明公开
    STEEL PRODUCT FOR INDUCTION HARDENING, INDUCTION-HARDENED MEMBER USING THE SAME, AND METHODS FOR PRODUCING THEM 有权
    STAHLPRODUKT F R DAS INDUKTIONSHOUTTEN，INDUKTIONSGEHûRTETESBAUELEMENT，BEI DEM DIESES VERWENDET WIRD，UND HERSTELLUNGSVERFAHREN DAF R

    公开(公告)号：EP1584701A4

    公开(公告)日：2006-10-25

    申请号：EP04701694

    申请日：2004-01-13

    申请人： JFE STEEL CORP

    发明人： OMORI YASUHIRO ,  HAYASHI TOHRU ,  MATSUZAKI AKIHIRO ,  TOYOOKA TAKAAKI

    IPC分类号： C21D1/10 ,  C21D9/28 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/00 ,  C21D8/00

    CPC分类号： C22C38/02 ,  C21D1/10 ,  C21D6/008 ,  C21D8/0205 ,  C21D9/28 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  Y02P10/253

    摘要： A steel product for use in induction hardening, which has a chemical composition in mass %: C: 0.35 to 0.7 %, Si: 0.30 to 1.1 %, Mn: 0.2 to 2.0 %, Al: 0.005 to 0.25 %, Ti: 0.005 to 0.1 %, Mo: 0.05 to 0.6 %, B: 0.0003 to 0.006 %, S: 0.06 % or less, P: 0.02 % or less, Cr: 0.2 % or less, and the balance: Fe and inevitable impurities, and comprises a bainite structure and/or a martensite structure in a proportion wherein the sum of the bainite and martensite structures accounts for 10 vol % or more thereof; and an induction-hardened member which is produced by using the above steel product and has a hard surface layer formed by induction hardening, wherein the particle diameter of the old austenite structure in the hard layer is 12 mum or less over the whole thickness. The member exhibits a high fatigue strength, and thus can be suitably used for a drive shaft and a constant velocity joint of an automobile, and the like.

    摘要翻译： 一种用于高频淬火的钢材，其具有以质量％计的化学成分：C：0.35〜0.7％，Si：0.30〜1.1％，Mn：0.2〜2.0％，Al：0.005〜0.25％，Ti：0.005〜 ，Mo：0.05〜0.6％，B：0.0003〜0.006％，S：0.06％以下，P：0.02％以下，Cr：0.2％以下，余量由Fe和不可避免的杂质构成， 贝氏体组织和/或马氏体组织，其贝氏体和马氏体组织的总和占其体积的10体积％或更多; 以及使用上述钢材制作的感应淬火构件，该感应淬火构件具有通过高频淬火而形成的硬质表面层，硬质层中的旧奥氏体组织的粒径在整个厚度范围内为12μm以下。 该构件具有高疲劳强度，因此可适用于汽车的驱动轴和等速万向节等。