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1. 发明专利

JPH11267796A DRUM TYPE STRIP CASTER 失效
公开(公告)号：JPH11267796A
公开(公告)日：1999-10-05
申请号：JP6843298
申请日：1998-03-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKAGI MITSUHIRO , WAKIYAMA YOICHI , NAKAJIMA HIROSHI , TAKATANI HIDEAKI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a drum type strip caster constituted so that scum floated on a meniscus in a molten metal pool part composed of one pair of rotating cooling drums and standstill side weirs can effectively be removed. SOLUTION: The molten metal pool part 50 is formed between one pair of cooling drums 51 and side weirs 52 and an immersion nozzle 53 is immersed into the molten metal pool part 50 to supply the molten metal 61. Immersion plates 1 are disposed on both sides so as to interpose the immersion nozzle 53 and the immersion plates 1 are vertically moved with elevating/lowering cylinders 2. This immersion plate 1 is made of a ceramic having the good wettability with the scum floated on the meniscum in the molten metal pool part 50, and on this surface, projecting parts for catching the scum are formed in the horizontal direction. The immersion plates 1 are intermittently lowered to stick and remove the scum.

2. 发明专利

JPH06335753A METHOD FOR RECOMBINING DRUM ASSEMBLY 失效
公开(公告)号：JPH06335753A
公开(公告)日：1994-12-06
申请号：JP12701393
申请日：1993-05-28
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： SASAKI KUNIMASA , WAKIYAMA YOICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To provide a recombining method, by which an exclusive truck for recombining the roll assembly and a rail are unnecessary, in twin roll type continuous casting equipment. CONSTITUTION:When the recombination of a drum assembly 1 comes to be necessary caused by the wearing of a water cooling roll 51, etc., of the drum assembly 1, after hanging and removing a tundish 80 with an overhead crane, the drum assembly 1 is hung with a ladle crane 30 through a hanging beam 7 and removed from a frame 5 and loaded on a ladle truck 40 and carried out. The drum assembly 1 already finishing the maintenance is loaded on a ladle truck 41 and carried and hung with the ladle crane 30 and arranged to a specific position.

3. 发明专利

JPH06328205A COOLING ROLL IN METAL STRIP CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH06328205A
公开(公告)日：1994-11-29
申请号：JP14250693
申请日：1993-05-24
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： YAMAJI CHIHIRO , ARAI TAKASHI , MIYAZAKI MASAFUMI , WAKIYAMA YOICHI , SASAKI KUNIMASA
IPC分类号： B22D11/04 , B22D11/055 , B22D11/06
摘要： PURPOSE:To provide a cooling roll, in which cooling roll profile is kept to a prescribed shape and a good quality metal strip is obtd., in a twin roll type continuous casting apparatus for producing the metal strip. CONSTITUTION:The cooling roll 1 is divided into three sections of A, B and C in the axial direction of the roll and in the cooling grooves 2a, 2b, 2c arranged near the roll surface, the cooling grooves 2a, 2c in the sections A, C positioned at the end parts are made to have the same distance from the roll surfaces. The cooling groove 2b in the section B positioned at the center part of the roll is made to have the distance from the roll surface shorter than these of the cooling grooves 2a, 2c to make the cooling capacity of the roll surface at the center part high. By controlling the thermal deformation of the cooling roll surface to keep the roll profile to the prescribed shape, the uniform rolling reduction force is applied to over the whole width in the solidified shell, and the generation of the defect, such as crack, wrinkle in the cast strip is prevented.

4. 发明专利

JPH06591A TWIN DRUM TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH06591A
公开(公告)日：1994-01-11
申请号：JP10827292
申请日：1992-04-28
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： TANAKA KISABURO , TERADO SADAMU , WAKIYAMA YOICHI
IPC分类号： B08B1/04 , B22D11/06 , B22D11/16
摘要： PURPOSE:To press a brush roll on a cooling drum with a fixed pressure and to uniformly remove the soiling on the surface of the cooling drum by measuring the variation in repulsion between a cooling drum shaft and a brush roll intermediate shaft and slidingly moving the intermediate shaft according to the variation. CONSTITUTION:The brush roll intermediate shaft 16 is held on a slide shaft 22 so as to be slidable, and by a load cell 20 arranged between the cooling drum shaft 2 and the brush roll intermediate shaft 16, the reaction between both is measured. By driving a motor 21 for controlling according to the variation of the reaction, the intermediate shaft 16 is slidingly moved to the position making the repulsion constant. This repulsion is varied both in an instantaneous value and a long-term average value by heat expansion, etc., in the part of rotating vibration of the brush roll but the deviation is controlled by comparing the long-term average value with the reference value. Thus, by pressing with a power cylinder 30 to the instantaneous variation, and by controlling with slidingly movement of the intermediate shaft 16 to the variation of the long- term, the good cast strip is stably produced.

5. 发明专利

JPH05228586A TWIN DRUM TYPE STRIP CONTINUOUS CASTING APPARATUS AND CASTING METHOD THEREOF 失效
公开(公告)号：JPH05228586A
公开(公告)日：1993-09-07
申请号：JP3518092
申请日：1992-02-21
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： ARAI TAKASHI , YOSHIMURA YUJI , YAMAGAMI YASUHIRO , OKA HIDETAKA , WAKIYAMA YOICHI , HATTORI HIDENORI
IPC分类号： B22D11/06 , B22D11/16
摘要： PURPOSE:To smoothen the starting, to prevent breakage of a cast strip at weak point caused by shell washing and to obtain the cast strip having the fixed thickness. CONSTITUTION:At a first step from the starting time until a node of the cast strip passes through the narrowest gap in one pair of the drums, the low pressure oil is supplied to a hydraulic cylinder 9 from a pump 25 through a second hydraulic supplying system 52 having an accumulator 51 and elastically weak rolling reduction force is given to one side of the drum from a bearing 7. At a second step until the shell washing does not develop after the rotation of the drum rises, the elastically further intense rolling reduction force is given by using the accumulator 31, too, followable property of the drum is improved and insufficient cooling is prevented. At a stationary third step, the accumulator 31 is shut off by changing over to first hydraulic supplying system 30 and the rolling reduction control is executed so that one side of the drum becomes parallel to the other drum to make the thickness of the cast strip constant.

6. 发明专利

JPH05228585A DEVICE FOR REMOVING SCUM IN STRIP CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH05228585A
公开(公告)日：1993-09-07
申请号：JP3328292
申请日：1992-02-20
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： SASAKI KUNIMASA , WAKIYAMA YOICHI , MIZUCHI ISAO , FUKUDA YOSHIMORI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116
摘要： PURPOSE:To eliminate defect of surface flaw, etc., in a cast strip by sticking and removing scum floated on molten metal surface to a wire rod enabling supplement and cutting. CONSTITUTION:The wire 6 is projected to tip part of a guide nozzle 1 and dipped into the molten metal 61. Then, a carriage 2 mounting the guide nozzle 1, wire supplying machine 3, pinch rolls 4 and straightening rolls 5 is reciprocated between side weirs 52 by a hydraulic cylinder 8. Then, the scum 63 floated on the molten metal 61 is stuck and removed to the wire 6. When the scum 63 stuck to the projecting part of the wire 6 becomes large, the carriage 2 is ascended every base plate 7 by a hydraulic cylinder 9, and the tip part of the guide nozzle 1 is shifted to the outside of molten metal storage part and the wire 6 is cut and removed by a cutter 11, and the following scum removing work is again executed by supplying the consumed wire 6.

7. 发明专利

JPH03118946A BRUSHING DEVICE FOR CONTINUOUS CASTING DRUM 失效
公开(公告)号：JPH03118946A
公开(公告)日：1991-05-21
申请号：JP25528389
申请日：1989-10-02
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： TANNO HITOSHI , YAMAGAMI YASUHIRO , HAYASHI KANJI , WAKIYAMA YOICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To uniformize thickness of stuck material on drum surface and to continuously cast a steel strip having high quality by inclining rotating axis of a brush for removing the stuck material on the drum surface to rotating axis of the drum at the time of continuously casting the steel slab having strip shape from molten steel with twin drum type using the cooling drums having hourglass shape in cold state. CONSTITUTION:Two cooling drums 1, 2 are rotated mutually to reverse direction, and molten steel is poured into gap between both drums and the continuously cast strip from between both drums is pulled out. In this case, surface of pouring basin part 3 at center of the drums 1, 2 is bulged to outside as shown with the chain line 7 caused by heating of the molten steel, and interval between both drums 1, 2 is made to small at the center part and thickness of the continuously cast strip is made to uneven in the width direction. As the stuck material on the drum is formed to the same shape, shape of the drum 1, 2 at cold-state is formed as the hourglass having the concave shape at the center part and at the same time, the rotating axis of columnar rotating brushing roll 5, 6 for removing the stuck material is inclined to the rotating axis of drum, and by making this angle adjustable, the stuck material face on the drum surface is flattened and the thickness of continuously cast strip is uniformized in the width direction.

8. 发明专利

JPH03118945A TWIN ROLL TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH03118945A
公开(公告)日：1991-05-21
申请号：JP25528289
申请日：1989-10-02
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： OMATSU YASUHIKO , TANNO HITOSHI , SHIMAO TERUO , ITO HIROO , SASAKI KUNIMASA , WAKIYAMA YOICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To improve wear resistance on end face of roll and also to improve sealing property in pouring basin part by arranging a ceramic material at parts of side weir in contact with the rolls and coating both end faces of the roll with tungsten carbide series wear resistant material. CONSTITUTION:Sectorial shaped side weirs 4, 5 are arranged at both sides of one pair of rolls 2, 3 so as to come into contact with the end faces 2a, 2b, 3a, 3b of each roll 2, 3 to demarcate the pouring basin part. The rolls 2, 3 are rotated to the arrow mark (a), (b) directions, respectively and the molten metal 6 is filled into the pouring basin part to send out a cast strip 8 from gap 7 between the rolls 2, 3. Then, at least at the position of the side weir 4, 5 in sliding contact with the end faces 2a, 2b, 3a, 3b of rolls, the ceramic material 9 (Si3N4, SiC, etc.) is set as V-shape and the circumference thereof is surrounded with refractory 10. Further, at the end faces 2a, 2b, 3a, 3b of the rolls, the base material 11 of roll is coated with the wear resistant material 1 of tungsten carbide series through Ni series alloy 12.

9. 发明专利

JPH09108783A MOLD FOR CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPH09108783A
公开(公告)日：1997-04-28
申请号：JP26392595
申请日：1995-10-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： WAKIYAMA YOICHI , NAKAJIMA HIROSHI
IPC分类号： B22D11/124 , B22D11/04 , B22D11/055
摘要： PROBLEM TO BE SOLVED: To provide a mold for continuous casting equipment which can efficiently and uniformly cool a cast slab. SOLUTION: A cooling means for cooling the outer wall of the mold 1 by injecting or flowing cooling water with spray nozzles 3 from the outer part of the mold 1, is arranged. Notching parts 8 are formed at the corner parts in a cylindrical polygonal shape of the lower tapered part 1c in the mold 1, and the spray nozzles 3 injecting the cooling water directly to these notching parts 8 are arranged. Further, a pressing means (pressing means 9 and mold pressing rods 7) for pressing non-notching part 8a with the same degree of pressing force as the molten steel static pressure to the inside direction of the mold 1, is arranged.

10. 发明专利

JPH0999346A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH0999346A
公开(公告)日：1997-04-15
申请号：JP15368896
申请日：1996-06-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： AOI TATSUFUMI , KAWADA NORIYUKI , NAKAJIMA HIROSHI , UNOKI KENICHI , NAKAJIMA MOTOKI , WAKIYAMA YOICHI
IPC分类号： B22D11/04 , B22D11/06 , B22D11/10 , B22D11/114 , B22D11/115
摘要： PROBLEM TO BE SOLVED: To restrain the leakage of molten metal along the axial direction of cooling rolls and to prevent the occurrence of defective part on the edge parts of a cast product. SOLUTION: A continuous casting apparatus is provided with one pair of the cooling rolls 1, 2 rotated in mutually reverse direction and one pair of side weirs 11 covering the end surfaces of the cooling rolls 1, 2 in the inside surface and the peripheral surfaces 1b, 2b of the cooling rolls 1, 2 in the arc surface 11b so as to be shiftable in the axial direction of the cooling rolls 1, 2 in at least one side in the side weirs 11. An electromagnet for forming magnetic flux parallel with the contact surface of the side weir 11 with the molten metal along the peripheral surfaces 1b, 2b of the cooling rolls 1, 2 is arranged at the opposite part of the peripheral surfaces 1b, 2b of the cooling rolls 1, 2 to the side weir 11.

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