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    • 1. 发明专利
    • METHOD AND DEVICE FOR REDUCING WIDTH OF SLAB
    • JPS60166101A
    • 1985-08-29
    • JP1996084
    • 1984-02-08
    • HITACHI LTDHITACHI NUCLEAR ENG
    • NORIKURA TAKASHINIHEI MITSUOYAMAMOTO KENJISHIRAIWA HIROYUKI
    • B21B1/02B21B15/00
    • PURPOSE:To reduce a crop part at the rear end of a slab and to manufacture a steel sheet in high yield by forming the rear end of the slab to be reduced in width into a shape consisting of a straight part and a slant part before reducing the width of rear end by pressing its both side faces in the sheet width direction of rear end. CONSTITUTION:In reducing the width of a slab throughout its whole length, by transporting the slab, a blank material to be hot rolled, in its longitudinal direction, and pressing both side faces in the width direction of slab by a press tool 3, having a pressing face consisting of a face 3A parallel to the side face and a slant face 3B slanted with respect to the face 3A, by periodically vibrating the tool 3 in the sheet width direction of slab; the side faces of said rear end are previously pressed by another pressing face of tool 3 consisting of a slant face 3D slanted to the slab outlet side and a face 3C parallel to the side face of slab, before reducing the width of the rear end of slab. In this way, an ordinary width reduction is provided to the slab after forming its rear end into the shape consisting of a straight part and a slant part, to reduce the quantity of a crop part and a dog bone generating at the slab rear-end thereby improving the yield in steel sheet manufacturing.
    • 3. 发明专利
    • DE60122069D1
    • 2006-09-21
    • DE60122069
    • 2001-02-27
    • HITACHI LTD
    • NORIKURA TAKASHI
    • B21B37/28G01B5/20B21B37/00B21B37/68B21B38/02B21C51/00G01B5/207G01B21/20G01L5/10
    • In a rolling mill facility having a strip shape detection equipment, making it possible to measure the strip shape of metal strip after rolling easily and with a simple construction. In a rolling mill facility consisting of a single or plural rolling mills(4)having a pair of top and bottom work rolls (2 and 3) that roll strip steel (1) and strip shape detecting devices (5 and 6) installed at least on one side of the inlet and outlet sides of the rolling mill (4), said strip shape detecting devices (5 and 6) consist of a single roller (14) on which the metal strip (1) gets wound, and at least two bearing boxes (9A and 10A) on one side or four bearing boxes on both sides with said bearing boxes (9A and 10A) supporting the roller in a free-to-rotate manner, and at least two load cells(11A and 12A)on one side or four load cells on both sides for measuring the supporting load of each of the bearing boxes (9A and 10A). From the load values measured by these load cells (11A and 12A), the tension distribution of the strip (1) is computed, and that tension distribution is converted into the strip shape of the strip.
    • 5. 发明专利
    • DE60138497D1
    • 2009-06-04
    • DE60138497
    • 2001-02-27
    • HITACHI LTD
    • NORIKURA TAKASHI
    • B21B37/28G01B5/20B21B37/00B21B37/68B21B38/02B21C51/00G01B5/207G01B21/20G01L5/10
    • In a rolling mill facility having a strip shape detection equipment, making it possible to measure the strip shape of metal strip after rolling easily and with a simple construction. In a rolling mill facility consisting of a single or plural rolling mills(4)having a pair of top and bottom work rolls (2 and 3) that roll strip steel (1) and strip shape detecting devices (5 and 6) installed at least on one side of the inlet and outlet sides of the rolling mill (4), said strip shape detecting devices (5 and 6) consist of a single roller (14) on which the metal strip (1) gets wound, and at least two bearing boxes (9A and 10A) on one side or four bearing boxes on both sides with said bearing boxes (9A and 10A) supporting the roller in a free-to-rotate manner, and at least two load cells(11A and 12A)on one side or four load cells on both sides for measuring the supporting load of each of the bearing boxes (9A and 10A). From the load values measured by these load cells (11A and 12A), the tension distribution of the strip (1) is computed, and that tension distribution is converted into the strip shape of the strip.
    • 6. 发明专利
    • DE60130629T2
    • 2008-06-26
    • DE60130629
    • 2001-08-13
    • HITACHI LTD
    • NAKAYAMA TORUTAKAGI MICHIMASANORIKURA TAKASHI
    • B21B13/02B21B13/14B21B31/00B21B31/02
    • In a cluster type split housing type rolling mill, the plate thickness control capability is improved by suppressing decrease in the mill rigidity as small as possible. Two pass line adjusting mechanisms (15, 16) are arranged between the operating side and the driving side outer housings (10, 11) in the upper side of the top inner housing (8) to form a top side supporting means for supporting the upper side of the top inner housing (8) to the outer housings (10, 11) in the operating side and the driving side each at two points in the front side and in the back side with respect to a pass direction using rocker plates of these two pass line adjusting mechanisms (15, 16). Further, two press-down cylinders (17, 18) are arranged between the operating side and the driving side outer housings (10, 11) in the lower side of the bottom inner housing (9) to form a bottom side supporting means for supporting the lower side of the bottom inner housing (9) to the outer housings (10, 11) in the operating side and the driving side each at two points in the front side and in the back side with respect to the pass direction using rocker plates of these two press-down cylinders (17, 18).
    • 7. 发明专利
    • DE60122069T2
    • 2007-10-04
    • DE60122069
    • 2001-02-27
    • HITACHI LTD
    • NORIKURA TAKASHI
    • B21B37/28G01B5/20B21B37/00B21B37/68B21B38/02B21C51/00G01B5/207G01B21/20G01L5/10
    • In a rolling mill facility having a strip shape detection equipment, making it possible to measure the strip shape of metal strip after rolling easily and with a simple construction. In a rolling mill facility consisting of a single or plural rolling mills(4)having a pair of top and bottom work rolls (2 and 3) that roll strip steel (1) and strip shape detecting devices (5 and 6) installed at least on one side of the inlet and outlet sides of the rolling mill (4), said strip shape detecting devices (5 and 6) consist of a single roller (14) on which the metal strip (1) gets wound, and at least two bearing boxes (9A and 10A) on one side or four bearing boxes on both sides with said bearing boxes (9A and 10A) supporting the roller in a free-to-rotate manner, and at least two load cells(11A and 12A)on one side or four load cells on both sides for measuring the supporting load of each of the bearing boxes (9A and 10A). From the load values measured by these load cells (11A and 12A), the tension distribution of the strip (1) is computed, and that tension distribution is converted into the strip shape of the strip.
    • 8. 发明专利
    • DE60130629D1
    • 2007-11-08
    • DE60130629
    • 2001-08-13
    • HITACHI LTD
    • NAKAYAMA TORUTAKAGI MICHIMASANORIKURA TAKASHI
    • B21B13/02B21B13/14B21B31/00B21B31/02
    • In a cluster type split housing type rolling mill, the plate thickness control capability is improved by suppressing decrease in the mill rigidity as small as possible. Two pass line adjusting mechanisms (15, 16) are arranged between the operating side and the driving side outer housings (10, 11) in the upper side of the top inner housing (8) to form a top side supporting means for supporting the upper side of the top inner housing (8) to the outer housings (10, 11) in the operating side and the driving side each at two points in the front side and in the back side with respect to a pass direction using rocker plates of these two pass line adjusting mechanisms (15, 16). Further, two press-down cylinders (17, 18) are arranged between the operating side and the driving side outer housings (10, 11) in the lower side of the bottom inner housing (9) to form a bottom side supporting means for supporting the lower side of the bottom inner housing (9) to the outer housings (10, 11) in the operating side and the driving side each at two points in the front side and in the back side with respect to the pass direction using rocker plates of these two press-down cylinders (17, 18).