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1. 发明专利

JPS62183902A CROSS ROLLING DOWN METHOD FOR HOT SLAB BY PRESS 失效
公开(公告)号：JPS62183902A
公开(公告)日：1987-08-12
申请号：JP2510086
申请日：1986-02-06
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： UEKI SHIGERU , HASHIMOTO SUNAO , NIHEI MITSUO
IPC分类号： B21J1/04 , B21B1/02
摘要： PURPOSE:To improve the width accuracy of a slab by providing side guides to the upper stream on the inlet side of dies and cross rolling down the front end of the slab then cross rolling down the unrolled down part at the rear end of the slab after centering with the side guides. CONSTITUTION:The side guides 5 are installed to the paper stream side of an inlet side roller table 3 of the dies 1 and the slab 4 is first continuously cross rolled down from the front eend thereof up to a prescribed length. The space between the dies 1 is then expanded and the slab 4 is advanced. The rolling down gap of the dies 1 is adjusted in the prescribed position and the rear end of the slab 4 is subjected to preforming. After the dies 1 are expanded in succession thereof, the slab 4 is retreated and is subjected to centering by the side guides 5, then the rear end is cross rolled down. The generation of a center deviation of the slab 4 and the step in the longitudinal direction thereof is prevented by the above-mentioned method. The accuracy of the finish width of the slab 4 is thus improved.

2. 发明专利

JPS632501A CROSS ROLLING METHOD FOR HOT SLAB 失效
公开(公告)号：JPS632501A
公开(公告)日：1988-01-07
申请号：JP14598986
申请日：1986-06-24
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI NUCLEAR ENG
发明人： UCHIDA HIDESHI , UEKI SHIGERU , TOUYAMA SUSUMU , HASHIMOTO SUNAO , SHIRAIWA HIROYUKI
IPC分类号： B21B1/02 , B21B37/72 , B21B39/00 , B21B39/12 , B21J1/02
摘要： PURPOSE:To prevent flawing of a slab surface by a slip between table rollers and the slab by detecting the retreating and advancing speeds of the slab during the cross rolling by a press and synchronizing the speeds of the table rollers with the retreating and advancing speeds of the slab. CONSTITUTION:Rollers 7, 8 for detecting an inlet or outlet side speed rotate and the roller revolutions are converted to pulses by pulse oscillators 9, 10 when the retreat or advance arises in the slab 1. The pulse signals are inputted to arithmetic units 11, 12 for inlet and outlet side table speeds, by which the table speeds are calculated. The calculated speeds are transmitted to control units 13, 14 for inlet and outlet side table speeds, by which the speeds of the inlet and outlet side tables 5, 6 are controlled and are synchronized with the retreat and advance speeds of the slab. While the speed detecting rolls are used in the above, the detection of the speed by means for measuring the position changes at the front and rear ends of the slab by distances using pinch rolls 2, 3 or ultrasonic waves or laser beams is also possible.

3. 发明专利

JPS6372401A CROSS ROLLING METHOD FOR HOT SLAB BY PRESS 失效
公开(公告)号：JPS6372401A
公开(公告)日：1988-04-02
申请号：JP7133486
申请日：1986-03-31
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： YAMAZAKI JUNJIRO , TOUYAMA SUSUMU , HIRA TAKAAKI , ABE HIDEO , KONDO SHIGETOSHI , KOMO TOSHIATSU , HASHIMOTO SUNAO , NIHEI MITSUO
IPC分类号： B21B1/02 , B21B37/72
摘要： PURPOSE:To permit control of the width drop to be generated at the front and rear ends of a sheet bar with good accuracy by determining the contact length between the parallel parts of dies and slab so as to minimize the width deviation of the cross rolling reduction at the longitudinal ends of a rolling stock predicted from specific conditions. CONSTITUTION:The position at the front end of the slab 3 conveyed by table rollers 4 is measured by a measuring roll 5 turning in contact with the front surface of the slab 3, a length measuring instrument 6 mounted thereto and a slab front end detector 7. The result of the measurement is inputted to a controller 8. On the other band, the shape (thickness, width) and cross rolling reduction of the slab 3 are preliminarily inputted to the controller 8. The temp. of the slab 3 is measured on the inlet side of a press by a themometer 9 and the result of the measurement is transmitted to the controller 8. The optimum length of the parallel parts of the dies and the slab is calculated from the specific conditions including the slab thickness, slab width, slab temp. and the cross rolling reduction by the press. The position of a table driving motor 10 is controlled in accordance with the result of the calculation.

4. 发明专利

JP2002143912A ROLLING MILL AND ROLLING METHOD 审中-公开
公开(公告)号：JP2002143912A
公开(公告)日：2002-05-21
申请号：JP2001258087
申请日：2001-08-28
申请人： HITACHI LTD
发明人： HARAKO TAKEHISA , HASHIMOTO SUNAO , KONOSE RYOHEI
IPC分类号： B21B31/02 , B21B13/14 , B21B31/20 , B21B31/32
摘要： PROBLEM TO BE SOLVED: To enable stable rolling by reducing the inclination of rolls and to manufacture high-quality products by decreasing the vibration of the rolls in a rolling mill in which a hydraulic apparatus for performing roll balance or shape control of a rolled stock is built in a movable frame which is separately provided from a roll chock attached in each end part. SOLUTION: Inside the movable frame 10, 11, the hydraulic apparatus 12, 13 for performing the roll balance and the shape control of the rolled stock, a hydraulic apparatus 16, 17 for restraining by pressing the roll chock 4, 5 and the movable frame 10, 11 against a rolling stand 3 in the current direction of the rolled stock and a hydraulic apparatus 18, 19 for restraining by pressing the movable frame 10, 11 against the rolling stand 3 in the vertical direction are provided.

5. 发明专利

JP2000212714A DEVICE AND METHOD FOR CONTINUOUS HOT DIP METAL COATING 失效
公开(公告)号：JP2000212714A
公开(公告)日：2000-08-02
申请号：JP882699
申请日：1999-01-18
申请人： HITACHI LTD
发明人： YAMADA SHIGEKAZU , NISHINO TADASHI , YAMAGUCHI TERUO , HASHIMOTO SUNAO
IPC分类号： C23C2/24 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide an excellent ability for controlling the coating thickness, and to miniaturize a continuous hot dip metal coating device by providing a permanent magnet to generate the magnetic field in the thickness direction of a steel strip on a device to control the coating thickness of the steel strip coated with a molten metal. SOLUTION: Rotary drums 40a, 40b to be rotated in the direction opposite to the advancing direction of a steel strip 10 are arranged at the height of 50-1500 mm above the surface of a molten metal bath, an excessive molten metal on a surface of the steel strip 10 drawn out of the bath is wiped to adjust the coating thickness. The rotary drums 40a, 40b are formed of cylindrical non-magnetic bodies, a plurality of permanent magnets 140a, 140b are arranged on their circumferential surfaces in an annular manner so as to be opposite to the surface of the steel strip 10, and cooled by cooling water from a cooling water circulating device 80. The permanent magnets 140a, 140b are opposite to the surface of the steel strip 10 and different in polarity from each other, the eddy current is induced in the molten metal adhered to the surface of the steel strip 10, and the coating thickness is controlled by suppressing the force to lift the excessive molten metal in the case of moving the steel strip 10 from a bottom to a top.

6. 发明专利

JPH02217101A METHOD AND EQUIPMENT FOR ROLLING HOT SLAB AND HOT ROLLING EQUIPMENT 失效
公开(公告)号：JPH02217101A
公开(公告)日：1990-08-29
申请号：JP3548289
申请日：1989-02-15
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： KONDO SHIGETOSHI , HASHIMOTO SUNAO , MATSUMOTO KENICHI , NARAHARA HIROSHI
IPC分类号： B21B1/02
摘要： PURPOSE:To prevent a rolled stock in rough rolling from interfering with a rolled stock in width rolling down and to carry out the rough rolling and the width rolling down simultaneously by rolling down the width while hot slab is supplied from the side of a reversible rough rolling mill to a heating furnace. CONSTITUTION:The heating furnace 1, a width rolling down device 2, a reversible or back pass type rough rolling mill 3 being a 1st rough rolling mill are arranged from the upstream of a line in this order. The slab 7 rolled down in width by the width rolling down device 2 receives, for example, a five-passes reverse rough rolling by the rough rolling mill 3. The slab 7 finished a 2nd pass rough rolling is rolled down in width by the width rolling down equipment as the slab 7 is supplied from the side of the rough rolling mill 3 to the side of the heating furnace 1. By this method, though the rough rolling by the rough rolling mill 3 and the width rolling down by the width rolling down equipment 2 are opened simultaneously, the rear end of the slab finished the 4th pass of the rough rolling and the front end of the slab in width rolling down do not interfere with each other. Consequently, the idle time can be minimized and the production efficiency can be improved.

7. 发明专利

JPS58190270A Cooling method for forcing motor coil 失效
标题翻译：用于强制电动机线圈的冷却方法
公开(公告)号：JPS58190270A
公开(公告)日：1983-11-07
申请号：JP7043882
申请日：1982-04-28
申请人： Hitachi Ltd
发明人： HASHIMOTO SUNAO , ICHIYANAGI TAKESHI
IPC分类号： H02K33/16 , H02K9/19 , H02K33/18
CPC分类号： H02K33/18
摘要： PURPOSE:To transfer the heat of a coil to an entire magnetic circuit to cool the coil by dipping a coil unit in cooling liquid which is filled in the magnetic circuit. CONSTITUTION:Cooling liquid 18 is filled in the space in a magnetic circuit, and seals 17 are mounted on the inner and outer peripheries of the parallel section of the output side of an outer peripheral yoke 13, a central yoke 12 and a coil 15. Thus, the heat of the coil section is transferred through the liquid 18 having high thermal conductivity into the entire magnetic circuit, thereby largely increasing the apparent thermal capacity. Accordingly, the heat of the coil 15 can be suppressed, thereby allowing larger current to flow.
摘要翻译：目的：通过将线圈单元浸入填充在磁路中的冷却液中，将线圈的热量传递到整个磁路以冷却线圈。构成：冷却液18填充在磁路的空间中，密封件17安装在外周磁轭13，中心磁轭12和线圈15的输出侧的平行部的内周和外周。因此，线圈部分的热量通过具有高导热性的液体18传递到整个磁路中，从而大大增加了表观热容量。因此，可以抑制线圈15的热量，从而允许更大的电流流动。

8. 发明专利

JPS5868604A DEVICE FOR MEASURING AMOUNT OF TURNING UP OF EDGE OF PLATE MATERIAL 失效
公开(公告)号：JPS5868604A
公开(公告)日：1983-04-23
申请号：JP16707781
申请日：1981-10-21
申请人： HITACHI LTD
发明人： HASHIMOTO SUNAO
IPC分类号： G01B11/00 , G01B11/24 , G01B11/245
摘要： PURPOSE:To make it possible to measure the amount of the turning up of the edge of the plate, by providing a reference light source in the common light receiving range, and utilizing the geometrical relationship of a triangle formed by two optical detectors and the edge of the plate material and a triangle formed by the edge of the plate material and the difference between the light receiving ranges of the two optical detectors from the reference light source. CONSTITUTION:The two optical detectors 32 and 33 are provided with a specified distance being provided in the advancing direction of the plate so that the light receiving ranges are overlapped. The amount of the turning up of the edge of the plate material 31 is measured, based on the geometrical relationship of the triangle formed by said two optical detectors 32 and 33 and the edge of the plate material 31, and the triangle formed by the edge of the plate material 31 and the difference between the light receiving ranges of the two optical detectors 32 and 33 from the reference light source 34.

9. 发明专利

JPS5592229A COILING STYLE CONTROL UNIT OF HOT STRIP COIL 失效
公开(公告)号：JPS5592229A
公开(公告)日：1980-07-12
申请号：JP29579
申请日：1979-01-08
申请人： HITACHI LTD
发明人： HASHIMOTO SUNAO
IPC分类号： B21C47/00 , B21C47/06 , B65H23/00 , B65H23/032
摘要： PURPOSE:To make possible controlling of high reliability by detecting the deviation in the width direction of a strip with detectors and feeding the same back to pinch rolls. CONSTITUTION:If a difference in discharge speeds is produced in the width direction at the time when a strip 6 is bent downward by upper and lower pinch rolls 4, 5 and goes toward a mandrel 11, the strip begins to run crooked. As it runs crooked, the quantities of light received in the right and left photo detecting parts 15 change. The changes in the quantities of light are converted to the changes in current with a converter 16 and are inputted to a logical decision circuit 17. The signal value of the time when the strip 6 is being normally coiled has beforehand been inputted as a set value in this logical decision circuit 17 which then compares the deviation from the set value and decides which of the right and left hydraulic screw-down mechanisms 12 is to be operated. The signal from the logical decision circuit 17 is inputted to an arithmetic circuit 18, where the rolling reduction and screw-down speed are determined to operate the hydraulic screw-down devices. Hence, the crooked running condition is eliminated.

10. 发明专利

JPH069688B2 失效
公开(公告)号：JPH069688B2
公开(公告)日：1994-02-09
申请号：JP22845584
申请日：1984-10-30
申请人： HITACHI LTD
发明人： HASHIMOTO SUNAO , SUGYAMA TOKUJI
IPC分类号： B21B1/24 , B21B1/26 , B21B13/14 , B21B27/02

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