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    1.
    发明专利
    未知

    公开(公告)号：DE2721729A1

    公开(公告)日：1977-11-24

    申请号：DE2721729

    申请日：1977-05-13

    Applicant: SUMITOMO METAL IND

    Inventor： OKABE HIROSHI ,  HASE NOBORU ,  SAWARA CHIBA ,  ASAI HITOSHI ,  HIRAMATU TERUO

    IPC: B21C47/30 ,  B65H75/24

    Abstract: A hot strip coiling mandrel has a mechanism for engaging a plurality of equally circumferentially divided drum segments about a core shaft and for moving the core shaft or the drum segments relatively axially to thereby radially expand and collapse the drum defined by the segments. Top marks caused at the leading coil end of a hot strip by the use of such a mandrel are prevented by the provision of a buffer between the core shaft and each of the drum segments.

    Preforming method of front and rear ends of hot rolled steel material
    2.
    发明专利
    Preforming method of front and rear ends of hot rolled steel material 失效
    热轧钢材前后的预制方法

    公开(公告)号：JPS5945001A

    公开(公告)日：1984-03-13

    申请号：JP15539582

    申请日：1982-09-07

    Applicant: Sumitomo Metal Ind Ltd

    Inventor： TAKEMOTO YUTAKA ,  HASE NOBORU

    IPC: B21B1/02

    CPC classification number: B21B1/02

    Abstract: PURPOSE:To preform the front and rear ends of a steel material without the need for stopping or positioning the steel material by using a cam rolls on the inlet side of a rolling mill in place of dies for rolling down said ends in the transverse direction. CONSTITUTION:A pair of freely rotatable eccentric (or elliptical) cam rolls 5 are provided on the inlet side of a cross rolling mill 4. The rolls 5 have a circular cross section and eccentric revolving shafts. The gap between the roll is adjusted by the rotation of a screw shaft 6. Cylinders 7 for starting the rolls 5 and hardware 8 are provided in the upper part of the rolls 5. When a steel material 1 is transferred, the gap of the rolls 5 is narrowed, and the cylinders 7 press the hardware 8 to apply rotating force on the rolls 5; thereafter, the rolls 5 are rotated by the frictional force of the steel material, whereby the steel material is preformed. A computer controller 9 is inputted with the width and length of the steel material from an upper program controller 10 and the time for passage of the front end of the steel material from a sensor 11 and performs automatically the above-mentioned operation when the preforming position at the front end of the steel material arrives at the rolls 5 from the rotating speed of table rolls 12.

    Abstract translation: 目的：通过在轧机的入口侧使用凸轮辊来代替在横向上的所述端部下压的模具来预制钢材的前端和后端，而不需要停止或定位钢材。 构成：在十字轧机4的入口侧设置有一对可自由旋转的偏心（或椭圆形）的凸轮辊5.辊5具有圆形横截面和偏心旋转轴。 通过螺杆6的旋转来调节辊之间的间隙。用于启动辊5和硬件8的气缸7设置在辊5的上部。当钢材1转移时，辊的间隙 5被压缩，并且气缸7按压硬件8以对辊5施加旋转力; 此后，辊5被钢材的摩擦力旋转，从而钢材被预成型。 从上位机控制器10输入钢材的宽度和长度的计算机控制器9以及钢材前端从传感器11通过的时间，并且当预成型位置 钢材的前端从台辊12的转速到达轧辊5。

    PREVENTING METHOD FOR TEMPERATURE DROP OF SLAB
    3.
    发明专利
    PREVENTING METHOD FOR TEMPERATURE DROP OF SLAB 失效

    公开(公告)号：JPS5881501A

    公开(公告)日：1983-05-16

    申请号：JP17790981

    申请日：1981-11-06

    Applicant: SUMITOMO METAL IND

    Inventor： TAKEMOTO YUTAKA ,  HASE NOBORU

    IPC: B21B1/02 ,  C21D9/00

    Abstract: PURPOSE:To prevent the variation in the quality of rolled materials owing to differences in temp. of slabs easily without requiring excessive costs by rounding or tapering all the corner parts of the slabs in slab producing stages and hot rolling the slabs. CONSTITUTION:In the production of slabs, the corner parts of the slabs are rounded or tapered by using molds for continuous casting of suitable shapes or working the slabs in the post stage of production, whereby the local drop of temp. owing to the radiation of heat in the corner parts having wide contact areas with air, water, rolling rolls, etc. is prevented, and the generation of the variation in the quality in the breadth wise direction of the rolled materials owing to differences in temp. is prevented. In the corner parts 1 of a slab of a thickness H, radius R1 is preferably about 0.2

    MANUFACTURE OF SKELP FOR BUTTTWELDED STEEL PIPE
    9.
    发明专利
    MANUFACTURE OF SKELP FOR BUTTTWELDED STEEL PIPE 失效

    公开(公告)号：JPS5457458A

    公开(公告)日：1979-05-09

    申请号：JP12495177

    申请日：1977-10-18

    Applicant: SUMITOMO METAL IND

    Inventor： HASE NOBORU ,  NARIAI YASUMASA

    IPC: B21C37/06 ,  B21C37/08

    Abstract: PURPOSE:To improve heatability and to contrive the improvement of heating efficiency, by previously rolling the portion of strip corresponding to the skelp edge into a thinned wall condition, when the strip is to be rolled, and then, by slitting the strip. CONSTITUTION:When the finishing stand is constituted of seven stands, for instance, the grooved rolls are employed for the rolling rolls of the fifth, sixth, and seventh stands. The ravine of the fifthe stand A is formed with d1=0.1-0.3mm, and the ravine of the sixth stand B is formed with rather shallower d2=0.1- 0.2mm. In the seventh stand, the ravine is formed with d3=0.1-0.15mm, that is, the ravine is formed into almost inexistent condition. Hereby, the wall mass gradually flows in the direction of the standard rolling plane whie the rolling is carried out, and only the concave groove 22 corresponding to the width of the skelp 21 is formed on the strip 2. When the edge portion of the skelp is thus previously thinned, the heating efficiency is improvied, and therefore, the energy saving in the heating furnace can be greatly promoted.

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