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1. 发明专利

JP2002035897A COOLING DRUM FOR CONTINUOUS CASTING 失效
公开(公告)号：JP2002035897A
公开(公告)日：2002-02-05
申请号：JP2000218659
申请日：2000-07-19
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： YAMAMOTO KEIICHI , HASHIMOTO RITSUO , TANI MITSUO , YOKOO KAZUTOSHI , MIYAKE KATSUYOSHI , YUSA JOJI , TSUNENARI KEIJI , YAMAMURA KAZUTO , YAMADA MAMORU , ISAKI HIROSHI
IPC分类号： B23P11/02 , B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a cooling drum for continuous casting in which sleeves of a pair of cooling drums do not relatively deviate from each other. SOLUTION: In the cooling drum for a drum type continuous casting machine, molten metal 3 is supplied to a pouring basin formed by a pair of cooling drums 1 which rotates opposite to each other and side gates 2 to bring it into contact with the surface of the cooling drum 1 and cool it and form a solidified shell for casting a metal thin sheet 4, the cooling drum 1 is provided with a drum body 11 having a hollow shaft 11a at both ends and a drum sleeve 10 fitted to the outer periphery of the drum body 11 and further, the drum body 11 is dividedly formed of a pair of shaft members 11A of which the hollow shaft 11a is integrally formed and which is connected to the end of the drum sleeve respectively, and a core member 11B which does not keep in contact with the shaft member 11A and is shrink-fitted onto the inside face of the drum sleeve.

2. 发明专利

JP2002346702A TWIN-DRUM CONTINUOUS CASTING DEVICE 失效
公开(公告)号：JP2002346702A
公开(公告)日：2002-12-04
申请号：JP2001149762
申请日：2001-05-18
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： OKA HIDETAKA , ISAKI HIROSHI , MIYAKE KATSUYOSHI
IPC分类号： B22D11/06 , B22D11/106
摘要： PROBLEM TO BE SOLVED: To prevent any wrinkle or swell and defective profile in the plate width direction of a cast slab which are generated by the increase of the surface area of the molten steel between a scum gate and a drum circumferential surface caused by the change of the molten steel level and the increase of the distance between a lower end of the scum gate and the drum circumferential surface caused by the ascent/descent of the scum gate in molding a thin strip cast slab by a twin-drum continuous casting device. SOLUTION: When a drive cylinder 17 is contracted, rollers 16 fitted to the right and left of a gate supporting arm 15 are guided and raised by a guide groove 14, and the gate supporting arm 15 ascends from the position A to the position B. The arc of the guide groove 14 is formed of the radius by adding the distance k between the scum gate 5 and the drum circumferential surface 1a to the radius r of a cooling drum, and the scum gate 5 is raised while maintaining the predetermined distance from the drum circumferential surface 1a. As a result, the surface area of the molten steel between the scum gate and the drum circumferential surface, and the distance between the lower end of the scum gate and the drum circumferential surface are not increased.

3. 发明专利

JP2002219557A TWIN DRUM TYPE CONTINUOUSLY CASTING DRUM 失效
公开(公告)号：JP2002219557A
公开(公告)日：2002-08-06
申请号：JP2001015357
申请日：2001-01-24
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： ISOKAMI KATSUYUKI , YAMADA MAMORU , TANAGA TAKESHI , ISAKI HIROSHI , IZU TADAHIRO , TSUNENARI KEIJI , YAMAMURA KAZUTO , MIYAKE KATSUYOSHI , YOKOO KAZUTOSHI , SASAKI KUNIMASA
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a casting drum composed of a Cu-alloy made sleeve and an SUS-made core light in weight, free from the sliding of a fitting part in thermal loading, and long in durable life, in a twin drum type continuous casting drum used for twin drum type continuous casting equipment. SOLUTION: By constituting the SUS made core, which is fitted into a Cu- alloy made sleeve, of ring-shaped cores juxtaposed in the axial direction with a space with one another as a plurality of splitted bodies, the sleeve is movable in the axial direction at the part where the core does not exist, and the relative sliding on the fitting part becomes hard to be caused at the part where the core exists owing to that the length in the axial direction of the fitting part of the sleeve and the core is cut to be short, as a result, enabling the tightening force to be small in fitting of the sleeve and the core, which enables the sleeve to be formed thin.

4. 发明专利

JP2001314946A CONTINUOUS CASTING METHOD OF THIN CASTING PIECE AND APPARATUS 失效
公开(公告)号：JP2001314946A
公开(公告)日：2001-11-13
申请号：JP2001050919
申请日：2001-02-26
申请人： NIPPON STEEL CORP
发明人： TAKEUCHI NOBORU , ISAKI HIROSHI , YAMADA MAMORU , TAKEUCHI TOMOHIDE
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To prevent entrainment of scum floating on a surface of molten metal in a pouring basin portion onto a shell in a pair of drum type continuous casting. SOLUTION: In a method casting a thin casting piece c while supplying molten metal r from a pouring nozzle 5 to a pouring basin portion 3 formed by a pair of cooling drums 1 and 1, non-oxidizable gas is blown to a surface of molten metal in the pouring basin portion 3 in which gas nozzles 7a and 7a provided on an upper portion of the cooling drums 1 and 1 point to a pouring molten metal nozzle 5 from a side of a meniscus m at a peripheral surface of the cooling drums. Consequently, entrainment of the scum onto a shell can be prevented as the scrums is moved toward a center portion of the pouring basin portion 3.

5. 发明专利

JP2000237848A METHOD FOR CONTROLLING ROLLING REDUCTION OF ROLLS IN TWIN ROLL TYPE CONTINUOUS CASTING 失效
公开(公告)号：JP2000237848A
公开(公告)日：2000-09-05
申请号：JP3984599
申请日：1999-02-18
申请人： NIPPON STEEL CORP
发明人： IZU TADAHIRO , TSUKAMOTO RYUTA , ISAKI HIROSHI
IPC分类号： B22D11/06 , B22D11/04 , B22D11/05 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To prevent the development of tear-off and breakout caused by a hot-band of a cast strip by sensing the development of the hot band from the variation of reaction of rolls or gap of the rolls, fastening the roll gap just after passing the roll reaction through the max. value, keeping the suitable roll reduction and executing the casting. SOLUTION: Signal of the roll reaction with a reaction detector 1 is compared with the reaction target value with a reaction control device 2 and a hydraulic servo valve 3 is controlled with the signal according to a difference and a rolling reduction position is controlled so that the roll reaction becomes the target reaction with a hydraulic cylinder 4. Further, a signal of the roll position with a positional detector 5 is compared with the drum gap target value through a rolling reduction control unit 6 and the drum position is controlled so as to become the target gap by controlling a motor M through a roll speed control unit 7 with the signal according to the difference to obtain the cast strip having a prescribed strip thickness.

6. 发明专利

JP2000202588A TWIN ROLL CONTINUOUS CASTING METHOD AND APPARATUS THEREOF 失效
公开(公告)号：JP2000202588A
公开(公告)日：2000-07-25
申请号：JP534899
申请日：1999-01-12
申请人： NIPPON STEEL CORP
发明人： ARAI TAKASHI , IZU TADAHIRO , ISAKI HIROSHI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a twin roll continuous casting method and an apparatus thereof, with which the pushing control of a side weir can be executed in response to the displacement of the end surfaces of cooling rolls during executing the casting. SOLUTION: A relational expression is beforehand obtained from many preceded casting heats and the temperature of cooling water for cooling the inner part of the cooling roll 1 at the flow-in side and the flow-out side is measured continuously during executing the actual casting. As the other way, the displacement of the rotating shaft of the cooling roll 1 is measured and this measured value is used and the displacement of the end surface of the cooling roll 1 is estimated from the above relational expression, and based on this estimated value, one side or both of the pushing force and the pushing speed of the side weir 3 are controlled. Further, as the other way, the displacement of the end surface of the cooling roll is measured continuously during executing the actual casting, and based on this measured value, one side or both of the pushing force and the pushing speed of the side weir are controlled.

7. 发明专利

JP2000190053A METHOD AND DEVICE FOR CONTROLLING SIDE WEIR PRESS IN TWIN ROLL TYPE CONTINUOUS CASTING 失效
公开(公告)号：JP2000190053A
公开(公告)日：2000-07-11
申请号：JP36679998
申请日：1998-12-24
申请人： NIPPON STEEL CORP
发明人： ODA TAKASHI , ISAKI HIROSHI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling side weir pressing for stably sealing a molten steel against disturbance generated during casting, and a device therefor, in twin roll type continuous casting for manufacturing a thin sheet cast piece. SOLUTION: An increasing volume of a reaction force, measured with a load cell mounted to a drum 1 or a load cell 4 mounted to a pressurizing cylinder 3 of a side weir 2, is detected, and simultaneously a pressing volume of the side weir is calculated by a computing device 5 corresponding to the size of the force in a form that a gap does not exist between the side weir 2 and the drum 1. Thereafter, a pressurizing cylinder 9 of the side weir is driven in real time by a pressing control device 6 of the side weir based on the calculated result, so as to control the pressing volume.

8. 发明专利

JPH1147897A IMMERSION NOZZLE FOR CONTINUOUSLY CASTING THIN AND WIDE CAST SLAB 失效
公开(公告)号：JPH1147897A
公开(公告)日：1999-02-23
申请号：JP21899297
申请日：1997-07-31
申请人： NIPPON STEEL CORP
发明人： MIYAZAKI MASAFUMI , NAKANO TAKESHI , ISAKI HIROSHI
IPC分类号： B22D41/50 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To provide an immersion nozzle for continuously casting a thin and wide cast slab which can stably cast the cast slab having good quality. SOLUTION: This immersion nozzle is formed as a flat-state barrel part 5 through a neck part 4 followed to almost cylindrical head part 3, and a molten metal flowing passage 2 in the neck part 4 is formed as a breadening state in the direction toward the barrel part 5 and an angle θ formed between the inner walls 11, 11 of the short sides, is 70-90 deg. and the sectional areas of the molten metal flowing passages 2 at the head part 3, neck part 4 and barrel part 5 are regulated to 95-105% of the opening hole area at the inlet side of the molten metal of the head part 3. By this constitution, the filling stream of the molten metal in the immersion nozzle 1 is secured and the drift is prevented, and the sticking of non-metallic inclusion on the inner wall of the nozzle and the local erosion in the inner wall of the nozzle are prevented, and the cast slab having good quality can stably be cast.

9. 发明专利

JP2005125337A Immersion nozzle for thin cast slab continuous casting equipment and casting method 有权
标题翻译：薄壁连铸连铸设备注浆喷嘴
公开(公告)号：JP2005125337A
公开(公告)日：2005-05-19
申请号：JP2003360759
申请日：2003-10-21
申请人： Nippon Steel Corp , Posco , ポスコ , 新日本製鐵株式会社
发明人： HOJO MASATAKE , KOBAYASHI HIDEAKI , ISAKI HIROSHI , NAKAHO MASATERU , CHON HYUNTAE , CHON HANNAMU , LEE CHORUGYU , KIM WANSUE
IPC分类号： B22D11/06 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To form a solidified shell having a uniform thickness by stabilizing a flow of molten metal discharged from an immersion nozzle under a favorable condition, and to prevent segregation of element and mixing of scum, in continuous casting of a thin cast slab by use of a moving mold such as a twin drum or a twin belt.
SOLUTION: In an equipment to continuously cast molten metal supplied to a molten metal well 3 via an immersion nozzle 6 into a thin cast slab, a number of discharge holes 10a and 10b in the immersion nozzle 6 are provided on a side facing a cooling drum 1, and directions of the discharge holes are tilted toward both left and right sides oppositely from the width center of the immersion nozzle 6 as a boundary. As a result, the flow of the molten metal discharged from the discharge holes 10a and 10b collides tiltedly against the solidified shell, which prevents remelting of the shell. Further, the flow of the molten metal proceeds to both left and right side banks 2 from the width center of the immersion nozzle 6 as a boundary, which prevents mixing of the scum floating on the molten metal well 3 into the cast slab.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了通过在有利条件下稳定从浸渍喷嘴排出的熔融金属的流动来形成具有均匀厚度的凝固壳体，并且为了防止元件的分离和浮渣的混合，在连续铸造中薄板坯通过使用诸如双筒或双带的移动模具。解决方案：在将通过浸没喷嘴6供给到熔融金属井3的熔融金属连续铸造成薄铸坯的设备中，浸没喷嘴6中的排出孔10a和10b设置在面向冷却滚筒1，并且排出孔的方向作为边界从与浸入式喷嘴6的宽度中心相反的左右两侧倾斜。结果，从排出孔10a和10b排出的熔融金属的流动相对于凝固的壳体倾斜地冲击，这防止了壳体的再熔化。此外，熔融金属的流动作为边界从浸入式喷嘴6的宽度中心前进到左侧和右侧的两个堤岸2，从而防止浮在熔融金属井3上的浮渣混入铸造板坯中。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004188469A Twin-drum type continuous casting method and apparatus 审中-公开
公开(公告)号：JP2004188469A
公开(公告)日：2004-07-08
申请号：JP2002360568
申请日：2002-12-12
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KIRIHARA TADASHI , IZU TADAHIRO , ISAKI HIROSHI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To prevent an edge-up caused by float-up of both edge parts of solidified shell from the peripheral surface of drums in the production of a thin cast strip by using a twin-drum type continuous casting apparatus.
SOLUTION: In a twin-drum type continuous casting method, with which the thin cast strip s is cast by continuously supplying molten steel M into a molten steel pool part 3 formed in between a pair of cooling drums 1, 1 and solidifying, a seal chamber 4 for airtightly covering the upper space of the molten steel pool part 3, is arranged, and non-oxidizing gas is supplied into the seal chamber and also, atmospheric pressure in this seal chamber is detected with a pressure gage 6, and the supplying amount of the non-oxidizing gas is adjusted so that this atmospheric pressure becomes 1.01-1.3 atm.
COPYRIGHT: (C)2004,JPO&NCIPI

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