Method for producing pipe having polygon-shaped closed cross-section and device therefor
    2.
    发明公开
    Method for producing pipe having polygon-shaped closed cross-section and device therefor 失效
    Verfahren und Vorrichtung zum Formen von Rohren mit polygonen Querschnitten

    公开(公告)号:EP0799656A2

    公开(公告)日:1997-10-08

    申请号:EP97105632.0

    申请日:1997-04-04

    IPC分类号: B21C37/15

    CPC分类号: B21C37/104 B21C37/155

    摘要: A method for continuously producing pipes, each having a polygon-shaped closed cross-section taken perpendicularly to the feeding direction of a strip of metal, which are free from brittleness caused by metal fatigue, and have good precision. A feed-bending method of successively feeding a strip of metal (work) W between a main die body, mandrel,punch and correction punches by predetermined feed lengths,and pressing the work W with these members synchroously with feeding is performed. The work W is gradually bent along designed ridgelines L1 through L2 extending in the feeding direction and defining ridgelines L5 through L8 of a product pipe W1, from the ridgelines L1 and L2 close to widthwise ends e1 and e2 to the ridgelines L3 and L4 in the widthwise center thereof in the course between the vicinity of an inlet and the vicinity of a middle of a device, and then, a resulting rough pipe W0 is corrected from the inside and outside thereof in the vicinity of an outlet of the device.

    摘要翻译: 一种用于连续生产管道的方法,其具有垂直于金属条的进给方向截取的多边形闭合截面,其不会由金属疲劳引起的脆性,并且具有良好的精度。 执行以预定的进给长度连续地在主模具主体,心轴,冲头和校正冲头之间馈送金属(工件)W条的进给弯曲方法,并且与进给同步地用这些构件按压工件W. 工件W沿着沿着进给方向延伸的设计的脊线L1至L2逐渐弯曲,并且从靠近宽度方向端e1和e2的脊线L1和L2定位到产品管W1的脊线L5至L8到脊线L3和L4 在入口附近与装置的中部附近之间的过程中的宽度方向中心,然后从装置的出口附近的内部和外部校正所得到的粗糙管W0。

    Monolithic catalytic converter and process for producing the same
    4.
    发明公开
    Monolithic catalytic converter and process for producing the same 失效
    Monolithischer Katalysator和Verfahren zu seiner Herstellung

    公开(公告)号:EP0768451A1

    公开(公告)日:1997-04-16

    申请号:EP96116257.5

    申请日:1996-10-10

    IPC分类号: F01N3/28

    摘要: A monolithic catalyst converter includes a monolithic catalyst (2), and a catalyst container (1). The catalyst container includes a tube-shaped member (1), and a pair of funnel-shaped cone members (1d,1e). The tube-shaped member holds the monolithic catalyst therein, and have opposite ends. The funnel-shaped cone members are connected with exhaust pipes of an exhaust system, are disposed at the opposite ends of the tube-shaped member, and are formed free from welding and integrally with the tube-shaped member. The monolithic catalyst converter can be manufactured with a high material yield (or a low scrap rate), at a reduced cost and under a good working environment, because it can be manufactured without the conventional troublesome welding operation and leak-test inspection.

    摘要翻译: 整体式催化转化器包括整体式催化剂(2)和催化剂容器(1)。 催化剂容器包括管状部件(1)和一对漏斗形锥体部件(1d,1e)。 管状构件将整体式催化剂保持在其中,并具有相对端。 漏斗状的锥形部件与排气系统的排气管连接,设置在管状部件的相对端,并且与管状部件形成为无焊接,整体形成。 由于可以在没有常规麻烦的焊接操作和泄漏检查检查的情况下制造,所以可以以低成本和良好的工作环境,以高的材料产率(或低废料率)制造整体式催化转化器。