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    METHOD OF WORKING METAL, METAL BODY OBTAINED BY THE METHOD AND METAL-CONTAINING CERAMIC BODY OBTAINED BY THE METHOD
    7.
    发明公开
    METHOD OF WORKING METAL, METAL BODY OBTAINED BY THE METHOD AND METAL-CONTAINING CERAMIC BODY OBTAINED BY THE METHOD 有权
    程序加工金属由过程GOT金属机身和经历的过程GOT金属陶瓷坯体

    公开(公告)号：EP1570924A4

    公开(公告)日：2006-04-19

    申请号：EP03756606

    申请日：2003-09-29

    申请人： NAKAMURA KATSUAKI

    发明人： HORITA ZENJI ,  NAKAMURA KATSUAKI ,  NEISHI KOJI ,  NAGAKAKI MICHIHIKO ,  KANEKO KENJI

    IPC分类号： B21C37/00 ,  C21D7/00 ,  C21D7/02 ,  C21D8/00 ,  C21D10/00 ,  C22F1/00 ,  C22F1/04

    CPC分类号： C21D7/02 ,  B21C23/001 ,  B21J1/025 ,  B62D27/023 ,  C21D7/00 ,  C21D7/13 ,  C21D9/0075 ,  C21D9/08 ,  C21D9/28 ,  C21D9/60 ,  C21D10/00 ,  C21D2201/03 ,  C21D2221/00 ,  C21D2251/00 ,  C21D2281/00 ,  C22F1/00 ,  Y02P10/253 ,  Y10S72/71 ,  Y10T428/12

    摘要： A method of working a metal in which the metal structure of metal body is rendered fine to thereby enhance the strength, ductility or homogeneity thereof; a metal body obtained by the metal working method; and a metal-containing ceramic body obtained by the metal working method. In this metal working method, the deformation resistance of metal body or metal-containing ceramic body (hereinafter referred to simply as 'metal body') is lowered locally to thereby form low deformation resistance regions in the metal body, and shear deformation of the low deformation resistance regions is effected so as to fine the metal structure of metal body. In particular, the metal body is formed in unidirectionally drawn configuration so as to produce low deformation resistance regions crossing the metal body. Further, with respect to two non-low deformation resistance regions arranged to sandwich low deformation resistance region crossing the metal body, one non-low deformation resistance region is caused to have a relative position change to the other non-low deformation resistance region so as to effect shear deformation of the low deformation resistance region. The low deformation resistance regions can be moved along the direction of drawing of the metal body.

    摘要翻译： 加工金属的一种方法，其中金属体的微观结构呈现细，从而提高强度，延性或它们的均一性; 由金属加工方法得到的金属主体; 和含有金属的陶瓷体由金属加工方法得到的。 在该金属加工方法中，金属体或含金属的陶瓷体的变形阻力（在通过向简称为“金属体”之后）局部降低，从而形成在金属体的低变形阻抗区域，并且低的剪切变形 变形阻力区域被实现以细金属体的微观结构。 特别地，该金属体在单向拉出的配置形成，以产生交叉的金属体变形阻力低的区域。 此外，相对于两个非低变形阻抗区域布置成三明治低变形阻抗区域交叉的金属体，一种非低变形阻抗区域被导致具有对其他非低变形阻抗区域，以作为相对位置变化 以实现低变形阻抗区域的剪切变形。 低变形阻抗区域可以沿着金属体的拉伸的方向上移动。

    Welded steel pipe for hydroforming and method for making the same
    9.
    发明公开
    Welded steel pipe for hydroforming and method for making the same 有权
    Geschweisstes Stahlrohr zum Hydroformen und Verfahren zu seiner Herstellung

    公开(公告)号：EP1264902A3

    公开(公告)日：2003-10-15

    申请号：EP02012120.8

    申请日：2002-05-31

    申请人： Kawasaki Steel Corporation

    发明人： Toyooka, Takaaki ,  Aratani, Masatoshi ,  Kawabata, Yoshikazu ,  Hashimoto, Yuji ,  Yorifuji, Akira ,  Okabe, Takatoshi ,  Nagahama, Takuya ,  Kimura, Mitsuo

    IPC分类号： C22C38/04 ,  C22C38/00 ,  C21D7/00 ,  C21D7/13 ,  C21D8/10

    CPC分类号： C21D8/10 ,  C22C38/04 ,  Y10T428/12965

    摘要： A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05% to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.01% or less of S; about 0.1% or less of Al; and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500°C to about 900°C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 400 MPa and an n×r product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar 3 transformation point. The welded steel pipe is suitable for forming structural components.

    摘要翻译： 通过加热或浸渍具有基于质量％：约0.05％至约0.2％C的钢组合物的未处理焊接钢管形成焊接钢管; 约0.2％以下的Si; 约1.5％以下的Mn; 约0.1％以下的P; 约0.01％以下的S; 约0.1％以下的Al; 和约0.01％以下的N; 并且通过将处理后的钢管以至少约35％的累积压下率和约500℃至约900℃的最终轧制温度进行还原轧制。焊接钢管显示出优异的加氢成形性，即具有优异的拉伸强度 至少约400MPa，nxr产物至少约0.22。 经处理的钢管优选以低于Ar 3相变点至少约20％的累积压下率进行还原轧制。 焊接钢管适用于形成结构件。