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1. 发明专利

JPH07185618A ROLL AXIAL DIRECTION MOVABLE DEVICE 失效
公开(公告)号：JPH07185618A
公开(公告)日：1995-07-25
申请号：JP32937793
申请日：1993-12-27
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： ISHIKAWA EIJI , ITO RYOJI , TAKAGI KIYOSHI , MACHIDOME MAKOTO , ITO SUMIHIKO
IPC分类号： B21B31/18 , B21B13/14
摘要： PURPOSE:To move a roll in an axial direction without supplying a bending force to a piston rod by constituting a connection means of a pin piercing through the other terminal of the piston rod in a cross direction and fixed on a slidable case and a free joint which connects the other terminal of the piston rod to the pin. CONSTITUTION:The piston rod 9 is connected to the slidable case 6 by the pin 7 piercing through a hole 9a of large diameter provided at the piston rod 9 and fixed on the holes 6a, 6a of the slidable case 6 and the free joint 8 which connects the inner periphery of the hole 9a of large diameter to the outer periphery of the pin 7. Therefore, the free joint 8 permits the inclination of the slidable case 6 and the pin 7 to some extent even when the slidable case 6 and the pin 7 are inclined by a micro angle, and only a force in a roll axial direction is always applied to the piston rod 9, and no bending force is applied. Therefore, the one-side abutting of the piston rod 9 with a cylinder 11, oil leakage due to the wear of a V-packing 14, and the deformation of the piston rod 9 can be prevented from occurring.

2. 发明专利

JPH07185617A ROLLING MILL 失效
公开(公告)号：JPH07185617A
公开(公告)日：1995-07-25
申请号：JP32937693
申请日：1993-12-27
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： ISHIKAWA EIJI , ITO RYOJI , TANAKA SHINJI , OKADA KIMIYUKI , KAWAKAMI KATSUMI
IPC分类号： B21B31/02 , B21B31/07
摘要： PURPOSE:To surely lower friction resistance and to improve accuracy of automatic sheet thickness control without increasing the hysteresis of a housing and roll bearing housings. CONSTITUTION:The respective reinforced roll bearing housings 6 are provided with wheels 7a at four corners of side faces 6A, 6A facing right and left window faces 9A, 9A. The reinforced roll bearing housings 6 are slid in a vertical direction by traveling of these wheels 7a on the widow faces 9A, 9A. The side faces 6A, 6A of the respective reinforced roll bearing housings 6 facing the window faces 9A, 9A are respectively provided with liners 8a, 8a. The thickness (d) of the liner 8a is smaller than the spacing D between the window surface 9A and the side face 6A. The friction between the housing 9 and the roll bearing houses 6 is, therefore, rolling friction via the wheels 7a to 7c and the friction resistance is lowered.

3. 发明专利

JP2000111336A COIL TIP POSITION/WINDING DIRECTION DETECTING DEVICE 失效
公开(公告)号：JP2000111336A
公开(公告)日：2000-04-18
申请号：JP28016798
申请日：1998-10-01
申请人： HITACHI LTD
发明人： ISHIKAWA EIJI , YONEKURA TAKASHI , ABO AKIRA
IPC分类号： B21C47/34 , B21C51/00 , G01B21/20
摘要： PROBLEM TO BE SOLVED: To detect the tip position and the winding direction of a coil relatively quickly and accurately by detecting distance to a coil outer surface by a plurality of means that are arranged outside a plate material that is wound in a coil shape. SOLUTION: First, an elevating device 10 is operated and a detector support bracket 8 is elevated and then distance detectors 7a and 7b at the tip are lowered to a position that is at a constant distance from the surface of a coil 1. A cradle roll 2 is driven and the coil 1 is rotated in a constant direction, distances (a) and (b) to the surface of the coil 1 are measured by the detectors 7a and 7b, and the difference (c=a-b) is calculated. Then, when the absolute value of (c) becomes larger than a specific threshold value, the position is judged to be a coil tip position. Then, the direction is judged to be either a forward- winding direction or a backward-winding direction according to whether the value of (c) is positive or negative. Then, finally, the coil 1 is transferred to a coil turner via the truck of, for example, automatic control.

4. 发明专利

JPH0833950A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH0833950A
公开(公告)日：1996-02-06
申请号：JP17091794
申请日：1994-07-22
申请人： HITACHI LTD
发明人： ISHIKAWA EIJI , AZEZAKI MASAYUKI , HORII KENJI , NISHINO TADASHI , SHIMOGAMA HIRONORI
IPC分类号： B22D11/04 , B22D11/059
摘要： PURPOSE:To provide a continuous casting apparatus, in which a gap of abutting parts between a short side mold and a long side mold at the time of casting is made to be as smaller as possible and troubles of the development of the flash and breakout, etc., caused by penetrating phenomenon of molten steel into the gap can be prevented and the stable casting in high speed can be executed. CONSTITUTION:A fixed mold 100 is formed with, one pair of the faced short side molds 1 having large width at the upper part and gradually narrowing from the molten metal surface toward the casting direction and one pair of the faced long side molds 2 interposing the short side molds 1 so as to almost abut from the width direction. Then, the radius of curvature on the side surface of the short side mold 1 is smaller than the radius of curvature of the surface of the long side mold 2 abutted on the short side mold 1, and the center of curvature on the side surface of the short side mold 1 is eccentrically positioned upward by a prescribed eccentric distance from the center of curvature on the surface of the long side mold 2.

5. 发明专利

JPH07303943A CONTINUOUS CASTING APPARATUS AND METHOD FOR CHANGING ITS MOLD 失效
公开(公告)号：JPH07303943A
公开(公告)日：1995-11-21
申请号：JP9975894
申请日：1994-05-13
申请人： HITACHI LTD
发明人： YASUNARI SHINICHI , NISHINO TADASHI , AZEZAKI MASAYUKI , ISHIKAWA EIJI , YOSHIMURA YASUTSUGU , HORII KENJI , FUTAKI TAKAO
IPC分类号： B22D11/04
摘要： PURPOSE:To miniaturize and lighten the parts to be shifted at the time of changing a mold and to execute the change of the mold in a short time, in a continuous casting apparatus and a method for changing its mold. CONSTITUTION:A mold unit 1 is constituted with the mold 11 and a cast slab supporting device 12 and further, is shiftable with wheels 13. After completing the casting operation, the mold unit is risen to the level of guide rails 6a, 6b from vibrating tables 3a, 3b with an elevating rail 16 and shifted to a waiting position C on the guide rail 6b through a mold unit carrying in/out device 10. Successively, a mold unit 2 having the same constitution as the mold unit 1, is shifted to the elevating rail 16 from a waiting position B on the guide rail 6a through a mold unit carrying in/out device 8 and lowered with the elevating rail 16 and fitted to vibrating tables 3a, 3b. At this time, the positioning of the mold unit 2 is easily executed by the guiding part.

6. 发明专利

JP2004181506A Wiper device and wiping method 审中-公开
公开(公告)号：JP2004181506A
公开(公告)日：2004-07-02
申请号：JP2002353644
申请日：2002-12-05
申请人： Hitachi Ltd , Mitsubishi-Hitachi Metals Machinery Inc , 三菱日立製鉄機械株式会社 , 株式会社日立製作所
发明人： NIHEI MITSUO , HIRAMA YUKIO , SEKI MASAAKI , TABATA SHUICHI , ISHIKAWA EIJI
IPC分类号： B21B27/10 , B21B1/32 , B21B13/02 , B21B45/02
CPC分类号： B21B45/0278 , B21B1/32 , B21B2013/028
摘要： PROBLEM TO BE SOLVED: To provide a wiper device and a wiping method by which excellent wiping performance is displayed under wide rolling conditions from a low speed to a high speed by finding suitable shape conditions of wiper rolls supported with gas bearings. SOLUTION: In wiper devices 5a, 5b for removing liquid on the surface of a strip 1, this device is provided with the wiper rolls 21a, 21b which are formed so that the value d/L of the roll diameter d to the roll length L of the roll is in the range of 0.02≤d/L≤0.05 and gas bearings 22a, 22b with which these wiper rolls 21a, 21b are boren with supplied gas and the wiper rolls 21a, 21b are pressed against the surface of the strip 1. COPYRIGHT: (C)2004,JPO&NCIPI

7. 发明专利

JPH0810968A LOCAL VACUUM CHAMBER FORMING METHOD IN ELECTRON BEAM WELDING AND ELECTRON BEAM WELDING EQUIPMENT FOR STRIP CONTINUOUS TREATMENT 失效
公开(公告)号：JPH0810968A
公开(公告)日：1996-01-16
申请号：JP14968994
申请日：1994-06-30
申请人： HITACHI LTD
发明人： SUZUKI HIDEO , ABO AKIRA , ISHIKAWA EIJI , NISHINO TADASHI , SATO TAMOTSU
IPC分类号： B21B15/00 , B23K15/00 , B23K15/06 , B23K101/16
摘要： PURPOSE:To provide the local vacuum chamber forming method and electron beam welding equipment in electron beam welding capable of sealing between two strips of different strip thickness/strip width an a vacuum welding chamber is enabled and holding a strip very near weld line. CONSTITUTION:The vacuum welding chamber 5 to execute electron beam welding consists of an upper vacuum vessel 3 which is provided with preliminary evacuation chambers 6-9 which extend along weld line so as to enclose periphery of weld zone of strip 1, 2 and are at least one in the trip width and longitudinal direction, and elastic sealing material 10, 10' between chambers 6-9 and opens its lower side and a lower vacuum vessel 4 which is symmetrical to the upper vessel and opens its upper side. In butt welding the strips 1, 2, the gas flowed in from the strip end gap part, which is formed at sandwiching the strips 1, 2 with the upper vacuum vessel 3 and lower vacuum vessel 4, is sucked by one preliminary evacuation chamber at least, vacuum zone is formed around weld zone and then welding is executed.

8. 发明专利

JPH11342420A FURNACE COILER MANDREL AND ROLLING FACILITY 失效
公开(公告)号：JPH11342420A
公开(公告)日：1999-12-14
申请号：JP411599
申请日：1999-01-11
申请人： HITACHI LTD
发明人： TACHIHARA SHIGERU , YAMAMOTO KENJI , ISHIKAWA EIJI , TOTSUKA KATSUMI
IPC分类号： B21B1/32 , B21C47/00 , B21C47/28
摘要： PROBLEM TO BE SOLVED: To improve quality of a rolled material by restraining deformation of a mandrel due to fastening force at the time of winding, while securing a long time usage of the mandrel. SOLUTION: This furnace coiler mandrel 6 is installed in a furnace coiler and has a nearly cylindrical shape shell 61, an opening part 66 arranged in a shaft direction as a circumferential direction discontinuous portion of the shell 61, and rolled material introduction long/short guides 64, 65 positioned at both circumferential end parts of the opening part 66 respectively. The long guide 64 is arranged at the rolled material introduction direction rear side and the short guide 65 is arranged at the rolled material introduction direction front side. Thickness T1 at a portion 61a, which is adjacent to the opposite opening port 66 side of the long guide 64, is made to be thicker than a thickness T2 at a portion 61b adjacent to the opposite opening port 66 side of the short guide 65.

9. 发明专利

JPH08141715A CONTINUOUS CASTING APPARATUS AND CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH08141715A
公开(公告)日：1996-06-04
申请号：JP27816594
申请日：1994-11-11
申请人： HITACHI LTD
发明人： HORII KENJI , SHIMOGAMA HIRONORI , NISHINO TADASHI , AZEZAKI MASAYUKI , ISHIKAWA EIJI , HIRANO SATOSHI , ISONO MITSUHISA
IPC分类号： B22D11/16 , B22D11/04 , B22D11/05 , B22D11/059
摘要： PURPOSE: To provide a continuous casting apparatus and a method thereof which reduces a step developed between cast slabs caused by difference of dimensional precision and wearing form during casting and can prevent the development of a trouble in the cast slab, at the time of constituting a part of the wall of a mold which is brought into contact with molten metal with plural different materials. CONSTITUTION: Short side molds 2a, 2b at upstream side with a refractory and short side molds at downstream side with a metal of copper, etc., are constituted, and the continuous casting is executed by a contracted casting system widening the upper part of the short side mold in the thickness direction of the cast slab and gradually narrowing toward the lower part in the mold 1. Then, the short side mold 2a, 2b at upstream side and the short side molds at downstream side are suitably advanced/retreated in the direction of the molten metal, and in the case of developing the step caused by the difference of the dimensional precision between the refractory and the metals and the difference of the wearing form during casting work, this step is reduced so as to put in a prescribed permissible range.

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