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41. 发明专利

JPH0433704A METHOD AND DEVICE FOR JOINING METAL PLATE IN HOT ROLLING 失效
公开(公告)号：JPH0433704A
公开(公告)日：1992-02-05
申请号：JP13792990
申请日：1990-05-28
申请人： HITACHI LTD
发明人： YASUDA KENICHI , NARITA KENJIRO , HIRAMA YUKIO , SATO KOJI , TAKAKURA YOSHIO
IPC分类号： B21B1/26 , B21B15/00 , B23K20/00
摘要： PURPOSE:To improve productivity by forming projecting and recessing shapes which are mutually engaged on the joint surfaces of the rear end part of a 1st material and the front end part of a 2nd material, cutting the unnecessary part of the tip and rear end part of the above-mentioned materials by adding shearing force and, next, pressurizing the projecting and recessing shapes after they are overlapped by engaging. CONSTITUTION:The rear end part of a rolled stock 1 and the front end part of a rolled material 2 are overlapped and that overlapped part is placed between two sets of dies 3, 4 and 5, 6. Next, this overlapped part is pressed with the two sets of dies and the projecting and recessing shapes which are composed of plural longitudinal grooves which are corresponded to the projecting and recessing shapes of the dies 4, 6 and which are engaged each other are formed on the upper and lower surfaces of the overlapped part. The two sets of dies 3, 4 and 5, 6 are moved vertically and relatively, shearing force is added at the same time pressing is completed and two plates of the overlapped part are simultaneously cut. By utilizing the die 4 and die 6 as a shear, the necessary parts 1a, 2a of the nose parts of each rolled stock are cut off. Next, the overlapped part is placed between the presses 7, 8 of which both of the top and bottom are flat and both rolled stocks are joined by pressurizing.

42. 发明专利

JPS62176602A WORK ROLL SHIFT ROLLING METHOD 失效
公开(公告)号：JPS62176602A
公开(公告)日：1987-08-03
申请号：JP1688186
申请日：1986-01-30
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KITAHAMA MASANORI , TSUCHIDA YUKIO , ABE HIDEO , AWATSUHARA HIROSHI , NARITA KENJIRO , NIHEI MITSUO
IPC分类号： B21B1/22 , B21B37/00
摘要： PURPOSE:To prevent the increase of a sheet crown when the abrasion wear of a roll increases by gradually decreasing the max. value and min. value of a roll shift with an increase in the number of rolling coils. CONSTITUTION:The shift stroke l of the roll is increased to prevent the thermal crown and the local wear of the roll when the number of the rolling coils counted from a roll exchange is small and the abrasion wear w is small. The extent of the movement of the shift stroke l is gradually increased to change the shift method to the shift method shown by a solid line 1 when the abrasion wear w increases with an increase in the number of the rolling coils. The increase of the sheet crown when the abrasion wear of he roll increases is thereby prevented without spoiling the function to prevent the wear of the abnormal roll and the function to disperse the thermal crown.

43. 发明专利

JP2003215295A METHOD AND APPARATUS FOR TREATING RADIOACTIVE WASTE 审中-公开
公开(公告)号：JP2003215295A
公开(公告)日：2003-07-30
申请号：JP2002009389
申请日：2002-01-18
申请人： HITACHI LTD
发明人： SAGA HIROSHI , KANEKO SHIGEJI , KONDO YOSHIKAZU , NARITA KENJIRO , ITO RYOJI
IPC分类号： G21F9/30
摘要： PROBLEM TO BE SOLVED: To suppress the scattering of fines by speedily drying dangerous radioactive metal waste which may ignites and explodes. SOLUTION: A container 1 on a small carriage 12 provided for a large carriage 2 is moved by the large carriage 2 below an upper lid attaching and removing device 5. An upper lid 24 of the container 1 is removed by the upper lid attaching and removing device 5. The container 1 is moved by the small carriage 12 below a container drying device 6. The container 1 is inserted in the device 6 by a container elevating and lowering device 7. The container 1 is provided with a passage 1-8 and a ball 1-4 to be pressed by springs. The ball 1-4 is pressed upward by the container elevating and lowering device 7 to supply hot air into the container 1 through the passage 1-8 from a hot-air inert-gas supplying device 8 and dry a hull 25 inside the container 1. The container 1 is removed out of the container drying device 6 and moved by the small carriage 12 below the upper lid attaching and removing device 5. The upper lid 24 is attached to the upper end part of the container 1 by the device 5. A container negative pressure device 9 presses the ball 1-4 upward to bright about a negative pressure in the container 1. The container negative pressure device 9 is removed from the container 1, and the passage 1-8 is blocked by the ball 1-4. COPYRIGHT: (C)2003,JPO

44. 发明专利

JP2003184975A TRANSMISSION 审中-公开
公开(公告)号：JP2003184975A
公开(公告)日：2003-07-03
申请号：JP2001385635
申请日：2001-12-19
申请人： HITACHI LTD
发明人： NIHEI MITSUO , NARITA KENJIRO , IIDA YOSHIHIKO , MATSUYAMA TAKAYOSHI
IPC分类号： F16H13/04
摘要： PROBLEM TO BE SOLVED: To provide a transmission for general purpose use, which can be used even under a severe condition, while meeting the demands in recent years. SOLUTION: The transmission 1 comprises rotary bodies 2A, 2B to be pushed respectively formed of a highly rigid metal, and placed separately from each other, a pushing rotary-body 3 formed of a highly rigid metal, and placed in accordance with diametric size of the respective to-be-pushed rotary bodies 2A, 2B. The center distance of rotation between the rotary bodies 2A, 2B is adjustable. A pushing device 4 is provided in the transmission to push the rotary body 3 to the rotary bodies 2A, 2B in a desired pushing force. COPYRIGHT: (C)2003,JPO

45. 发明专利

JP2003107193A COMPRESSING METHOD OF WASTE AND ITS COMPRESSING FACILITY 审中-公开
公开(公告)号：JP2003107193A
公开(公告)日：2003-04-09
申请号：JP2001298990
申请日：2001-09-28
申请人： HITACHI LTD
发明人： KONDO YOSHIKAZU , NARITA KENJIRO , KANEKO SHIGEJI
IPC分类号： G06F12/16 , B09B3/00 , B30B9/32 , G06F11/00 , G06F21/22 , G21F9/30
摘要： PROBLEM TO BE SOLVED: To reduce the installation area of a radioactive waste disposal facility. SOLUTION: A vessel 1 holding radioactive waste such as a hull is loaded into a mold 51 of a vessel conveyance carrier 5 by using a vessel vertically moving device 40. The vessel is evacuated to be substantially vacuum. The vessel conveyance carrier 5 moves up to a vessel compressing device 30 and sets the mold 51 in a predetermined position in the vessel compressing device 30. A compressing rod 37 of the vessel compressing device 30 is raised, and the vessel 1 in the mold 51 is compressed. The vessel conveyance carrier 5 including the compressed vessel 1 is moved to a position directly above the vessel vertically moving device 40. A receiving lid 53 is rotated, the mold 51 is opened, and the compressed vessel 1 is discharged outside the mold 51 by the vessel vertically moving device 40. A vessel loading process and a vessel unloading process are carried out by the vessel vertically moving device 40, and a compressing process is carried out by the vessel compressing device 30. It is only necessary to two devices of the vessel vertically moving device 40 and the vessel compressing device 30, and the installation area of the radioactive waste disposal facility is significantly reduced.

46. 发明专利

JP2001047122A DESCALING METHOD AND DESCALING DEVICE 失效
公开(公告)号：JP2001047122A
公开(公告)日：2001-02-20
申请号：JP22824999
申请日：1999-08-12
申请人： HITACHI LTD
发明人： HIRANO SATOSHI , NIHEI MITSUO , NARITA KENJIRO , NAKAYAMA TORU
IPC分类号： B21B45/08
摘要： PROBLEM TO BE SOLVED: To provide a descaling method and a descaling device by which a rolled stock is controlled to proper temperature with an excellent scale removal capability. SOLUTION: The thickness of residual scale after descaling is obtained from the collision pressure value of high-pressure water and descaling time and the amount of temperature drop of the rolled stock after descaling is obtained from the collision pressure value, descaling time, thickness of the rolled stock and density of the quantity of water, thereby controlling at least one of the pressure of the high-pressure water, rolling speed and distance between a jetting nozzle and the surface of the rolled stock based on the thickness of the residual scale and the temperature drop. In this way, the rolled stock is controlled to the proper temperature with an excellent scale removal capability.

47. 发明专利

JP2000071004A ROLL COOLING METHOD AND DEVICE FOR ROLLING MILL 失效
公开(公告)号：JP2000071004A
公开(公告)日：2000-03-07
申请号：JP24283698
申请日：1998-08-28
申请人： HITACHI LTD
发明人： SHIINA KOJI , NIHEI MITSUO , NARITA KENJIRO , IGARI MINORU
IPC分类号： B21B27/10
摘要： PROBLEM TO BE SOLVED: To improve a roll cooling performance by arranging nozzles in a manner that a distance between a rolling mill roll and a nozzle, and a nozzle installation interval in a roll axis direction are set so that a cooling performance is made to be a peak value at any nozzle flow rate density. SOLUTION: A rolling is carried out by transiting a rolling plate member 1 between upper and bottom work rolls 2a, 2b. Since a contact heat conduction from the rolling plate member 1, and a heat inflow due to a processing heat at a time of pressurization exist in the upper work roll 2a and the bottom work roll 2b, the cooling water from the upper part cooling nozzle 5a and the bottom part cooling nozzle 5b are injected for reducing the roll temperature rise. The nozzles 5a, 5b are arranged by setting a distance between the upper work roll 2a, the bottom work roll 2b and the nozzles 5a, 5b, and a nozzle installation interval in the roll axis direction in a manner that the cooling performance is made near the peak value at any nozzle flow rate density Wc. The distance and the nozzle installation interval are reset based on the change of the roll diameter so that a variation rate of an average heat conduction rate into the rolling mill roll is made small.

48. 发明专利

JPH105808A ROLLING METHOD AND ROLLING SYSTEM 失效
公开(公告)号：JPH105808A
公开(公告)日：1998-01-13
申请号：JP15836696
申请日：1996-06-19
申请人： HITACHI LTD
发明人： SAITO TAKEHIKO , KAGA SHINICHI , NARITA KENJIRO , SATO KOJI , HIRAMA YUKIO
IPC分类号： B21B13/14 , B21B1/22 , B21B13/02 , B21B37/00 , B21B37/68
摘要： PROBLEM TO BE SOLVED: To restrict the generation and diffusion of camber of a rolling steel, to prevent meandering during rolling, and to improve the stable operation of a rolling line and the quality of the rolling steel by detecting the off-center amount during rolling and moving roll chocks to the horizontal direction. SOLUTION: This controller 11 outputs the command to cross-blocks 5a, 5b, 5c, and 5d and hydraulic draft devices 3a and 3b so that a moving amount in the horizontal direction and a corrective amount of draft positions of the driving side and the operating side calculated with an arithmetic processor 12 can be obtained. The difference distribution of width direction thickness (crown) can be controlled during rolling by respectively and individually driving roll chocks 2a, 2b, 2c and 2d of the operating side and the driving side of the upper and lower work rolls 1a, 1b to the horizontal direction.

49. 发明专利

JPH07256312A JOINING METHOD FOR ROLLED STOCK, DEVICE THEREFOR AND HOT ROLLING LINE 失效
公开(公告)号：JPH07256312A
公开(公告)日：1995-10-09
申请号：JP5067794
申请日：1994-03-22
申请人： HITACHI LTD
发明人： YASUDA KENICHI , NARITA KENJIRO , HIRAMA YUKIO , SATO KOJI , NISHINO TADASHI
IPC分类号： B21B45/06 , B21B1/26 , B21B15/00 , B23K20/00 , B23K20/12
摘要： PURPOSE:To provide a method for joining rolled stocks by which the high reliability of joining is surely realized by a simple method, device for joining the rolled stocks and hot rolling line. CONSTITUTION:In a thickness reducing mechanism 31, the thickness in the rear end part 1A of a preceding stock 1 is reduced by pressing from upper and lower sides with thickness reducing blocks 32U, 32L and plural grooves 1a are formed on the upside. Similarly, plural grooves 2a are also formed on the upside in the tip part 2A of the succeeding stock 2. Next, in a pressing/ sliding mechanism 36, while the rear end part 1A of the preceding stock 1 and tip part 2A of the succeeding stock 2 which are vertically overlapped are pressed with pressing blocks 37U, 37L, the preceding stock 1 is drawn out in the downstream side by stopping pinch rollers 38a, 38b, holding them and revolving pinch rollers 39a, 39b. In this way, the preceding stock 1 and the succeeding stock 2 are joined by mutually sliding the rear end part 1A and the tip part 2A.

50. 发明专利

JPH07185603A EQUIPMENT FOR PRODUCTION OF HOT SHEET MATERIAL AND PRODUCTION OF HOT SHEET MATERIAL 失效
公开(公告)号：JPH07185603A
公开(公告)日：1995-07-25
申请号：JP33489693
申请日：1993-12-28
申请人： HITACHI LTD
发明人： NARITA KENJIRO , YASUDA KENICHI , HIRAMA YUKIO , SATO KOJI , KAJIWARA TOSHIYUKI , HORII KENJI , NISHINO TADASHI
IPC分类号： B21B1/32 , B21B1/00 , B21B15/00 , B21B45/00
摘要： PURPOSE:To stably produce good-quality sheet materials by casting the sheet materials by >=1 continuous casting machines, coiling these sheet materials by a coiler and heat holding or heating the coiled sheet materials in a tunnel furnace. CONSTITUTION:The sheet materials are cast by the >=1 continuous casting machines 8 and the unequal temps. of the sheet materials generated at the time of casting are made uniform by a soaking pit 7. The sheet materials are coiled by the coiler 6 and are taken into the tunnel furnace 5. The coiled sheet materials are held hot or heated to a temp. adequate for rolling in the tunnel furnace 5. The sheet materials are moved to a discharge port and are discharged to the coiler 4. The sheet materials are coiled and held hot or heated, by which the necessary space is greatly reduced and further, the matching of the production speeds of the continuous casting machines 8 and a rolling mill group 1 is possible.

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