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11. 发明专利

JPS63154245A CONTINUOUS CASTING METHOD FOR CAST STRIP 失效
公开(公告)号：JPS63154245A
公开(公告)日：1988-06-27
申请号：JP29667986
申请日：1986-12-15
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： YODA RYOJI , BESSHO NAGAYASU , NOZAKI TSUTOMU , FUJII TETSUYA , KUGA MASAAKI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent breakout and roughness or cracking of cast strip surface by coating the molten metal surface poured in a casting space by plate-like or granular-like heat-insulating material. CONSTITUTION:Preceding the supplying of molten steel from pouring nozzle 8, beforehand after setting the heat-insulating material 12 composing of refractory board by wire 11 near the meniscus, the molten steel is poured into the casting space through the pouring nozzle 8. As the heat-insulating material 12 is brought into contact with the molten steel near the meniscus, the surface is prevented from contacting with the air, to execute the heatinsulation of molten steel surface. In this way, the development of oxidizing molten surface is prevented and the continuous casting is smoothly executed.

12. 发明专利

JPS6343743A CONTINUOUS CASTING METHOD FOR CAST STRIP 失效
公开(公告)号：JPS6343743A
公开(公告)日：1988-02-24
申请号：JP18432086
申请日：1986-08-07
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： MORIWAKI SABURO , KITANO YOSHIHISA , KUGA MASAAKI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To improve the quality of a east strip and to quicken the casting velocity by narrowing locally an interval of one pair of facing metallic belts through adjusting rolls. etc., and next reducing under pressure solidified shell formed on the metallic belts. CONSTITUTION:A belt cooling device 6 is arranged at the back face of metallic belt 4 aud also a pinch roll 9 is arranged at the lower part thereof. Molten metal 2 is started to solidify in ths belt type mold and the solidified shell is formed on the metallic belts 4. Then, a hydraulic cylinder 8 is adjusted, so as to narrow the interval of belts 4 locally by the proscribed size by the adjusting rolls 7. Therefore, at the time of drawing the cast strip 11 through pinch rolls 9, non-solidified part in the cast strip becomes to perfect solidified state by reducing under pressure as cooling forcely by cooling water of the adjusting roll 7. In this way, development of defect in the cast strip is prevented aud the casting velocity is quickened.

13. 发明专利

JPS63165049A BELT ATTACHING/DETACHING DEVICE FOR BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPS63165049A
公开(公告)日：1988-07-08
申请号：JP31297386
申请日：1986-12-26
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： AHIKO HIDETAKA , SHIDARA HISAHIRO , ABO AKIRA , YOSHIDA HISASHI , KUGA MASAAKI , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To shorten exchange time of a belt and to rationalize safekeeping for the belt by arranging a belt safekeeping truck comprehensively holding the belt as attaching shape and also arranging a belt attaching/detaching cassette transferring the belt from a rack. CONSTITUTION:The belt safekeeping truck having a belt holder 18 is arranged to the belts 2, 3 and also the attaching/detaching cassette 20 holding as attaching the belt 2, 3 by plural electromagnets 21, is arranged. At first, the belt 2, 3 is hung by a hanger and shifted by a crane to attach to the belt holder 18 in the safekeeping rack. Next, the horizontal and vertical holders 18a, 18a are pushed out by cylinders, to form the belt 2, 3 to the shape of attaching/ detaching cassette 20, and then the belt is inserted into the casting machine body through the cassette 20. As the attachment/detaching of belts 2, 3 can be executed by using the attaching/detaching cassette 20, the exchange time of belt is shortened and the safekeeping of it is rationalized.

14. 发明专利

JPS6326247A CONTINUOUS CASTING METHOD FOR THIN INGOT 失效
公开(公告)号：JPS6326247A
公开(公告)日：1988-02-03
申请号：JP17059986
申请日：1986-07-19
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KITANO YOSHIHISA , MORIWAKI SABURO , KOSHIKAWA TAKAO , KUGA MASAAKI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the generation of a double surface and to facilitate an operation by executing casting while pressing force is kept exerted to the casting space side of casting mold short sides at the time of continuous casting of the thin ingot. CONSTITUTION:Hydraulic cylinders 2a, 2b are respectively disposed to the outside of the mold short sides 1a, 1b of a continuous casting machine and the mold short sides la, lb are pressed toward the casting space side 3. A high pressure-low pressure selector solenoid valve 6, a high pressure solenoid valve 5, and a low pressure solenoid valve 4 are respectively provided in a hydraulic circuit so that the hydraulic cylinders 2a, 2b can be selected to both the high and low pressures. When the thermal shrinkage quantity of the ingot changes with the change of the casting speed at the time of the continuous casting of the ingot, the pressing force is adjusted in follow up to such change to adjust the taper quantity of the mold short sides 1a, 1b. The mold short sides 1a, 1b move according to the thermal shrinkage quantity of the ingot according to the above-mentioned method; therefore, the generation of the double surface is prevented and the operation is facilitated.

15. 发明专利

JPS6320141A CONTINUOUS CASTING METHOD FOR CAST STRIP 失效
公开(公告)号：JPS6320141A
公开(公告)日：1988-01-27
申请号：JP16470586
申请日：1986-07-15
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： YODA RYOJI , BESSHO NAGAYASU , FUJII TETSUYA , NOZAKI TSUTOMU , KITANO YOSHIHISA , KUGA MASAAKI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent enclosure of impurities floated up on molten steel surface into a rotating body and to execute the sequence casting of cast strip without any surface crack by dividing the molten surface near the position contacting with at least the rotating body as long side face of the molten surface by a heat insulating body. CONSTITUTION:In a cast strip continuous caster using for example, one pair of rolls 9, 9 and one pair of short side molds 4, 5, the molten surface at the position brought at least the molten surface 10 into contact with the rolls 9 and near the position is divided by the heat insulating body 12. In this way, the enclosure of impurities, etc., floated up on the molten surface into the rolls 9 is prevented. Therefore, development of irregularity for the cast strip 7 surfaces, occurrence of cracking for the cast strip 7 surface and occurrence of breakout caused by irregular cooling of the cast strip 7 are eliminated. Further, as powders 11 are added at inside of the heat insulating body, oxidation of the molten surface is reduced and the pouring operation for a long time is executed, and so the sequence casting is executed.

16. 发明专利

JPS62212041A SHORT SIDE MOLD FOR CONTINUOUS CASTING OF THIN CASTING SLAB 失效
公开(公告)号：JPS62212041A
公开(公告)日：1987-09-18
申请号：JP5140486
申请日：1986-03-11
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KITANO YOSHIHISA , MORIWAKI SABURO , KUGA MASAAKI , KOSHIKAWA TAKAO , IMAIDA YASUO , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent occurrence of a constrained breakout by friction with a thin casting slab, by arranging a plate having good lubricity and heat conductivity between the upper heat resistance body and the lower cooling plate of a short side mold in the thin casting slab continuous casting by the facing running cooling body. CONSTITUTION:In the short side molds 4, 5 in the thin casting slab continuous casting by pairs of endless cooling belts 1, 2 and cooling rolls, the plate 11 having good lubricity and heat conductivity, such as carbon brick, oil impregnation sintering alloy, boron nitride, etc., is arranged between the upper heat resistance body 9 and the lower cooling plate 10. The shells developed at the both end parts of the casting slab are smoothly grown, and as the friction with the wall face is little, the casting slab is cast continuously without occurrence of the constrained breakout, and the casting operation is executed safely and smoothly and the quality of the products is improved.

17. 发明专利

JPS63174761A TWIN BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPS63174761A
公开(公告)日：1988-07-19
申请号：JP719387
申请日：1987-01-14
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NISHINO TADASHI , KIMURA TOMOAKI , KUGA MASAAKI , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To stabilize the operation by forming a protruded bending curve at the side face of an upper portion of a side plate for a mold and also forming a recessed bending curve toward a belt direction at the side face of a lower portion. CONSTITUTION:The fixed side plate 11 composing of a mold for coontinuous casting is formed, so that its upper side face containing a molten metal surface position has a protruded bending curve to a cooling pad 12 direction. Further, the side face of the lower portion for the fixed side plate 11 is formed, so as to have the recessed bending curve to the cooling pad 12 direction, that is, the belt direction. In this way, in the upper range of the molten metal pool, the belt 3 is pushed to the fixed sided plate 11 direction by belt tension T, to secure air-tight of the mold. In the lower portion of the mold, as the side face of the side plate 11 is formed to the recessed shape, the tightening to the short side is executed by the belt 3. Therefore, the insertion phenomenon of molten metal in the mold is eliminated and the operation of continuous casting is stably executed without any interruption.

18. 发明专利

JPS6326244A STATIONARY SHORT SIDE FOR CONTINUOUS CASTING OF THIN INGOT 失效
公开(公告)号：JPS6326244A
公开(公告)日：1988-02-03
申请号：JP16562686
申请日：1986-07-16
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KUGA MASAAKI , MORIWAKI SABURO , KITANO YOSHIHISA , YASUKAWA NOBORU , TOZAWA KOICHI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the generation of double surfaces at the end face of a thin ingot and to improve the yield of the ingot by disposing a metallic layer or refractory layer having good heat conductivity near the meniscus of a stationary short side heat insulating layer. CONSTITUTION:The side face of the stationary short side heat insulating layer 7 having the shape converging downward from the upper to the lower part is coated with the metallic layer 8'' and a metallic plate 8' consisting of copper, etc., is provided to the lower part. The refractories having the good heat conductivity or the metallic layer 10 is further disposed near the meniscus part of the heat insulating layer 7. Alumina, zircon, etc., are used for the refractories having the good heat conductivity and copper, etc., are used for the metallic layer. A rectangular solidified shell is formed near the stationary short side meniscus part by the above-mentioned mechanism. The intrusion of the molten steel between the stationary short side walls and the solidified shell is prevented by such solidified shell. The generation of the double surfaces of the thin ingot is prevented and the yield is improved by the above-mentioned method.

19. 发明专利

JPS62275550A SHORT DUMMY BAR FOR BELT TYPE CONTINUOUS CASTER 失效
公开(公告)号：JPS62275550A
公开(公告)日：1987-11-30
申请号：JP11494186
申请日：1986-05-21
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KITANO YOSHIHISA , KOSHIKAWA TAKAO , MORIWAKI SABURO , KUGA MASAAKI , BESSHO NAGAYASU , KIMURA TOMOAKI
IPC分类号： B22D11/06 , B22D11/08
摘要： PURPOSE:To shorten casting preparation time and to dissolve the difficulty at the time of drawing cast sheet by arranging an attraction means on dummy bar surface contacting with metallic belt, composing of the long side face of a mold. CONSTITUTION:Such as a magnet 10, etc., as the attraction means on the short dummy bar 12 surface contacting with the metallic belt 1, composing of the long face of the mold is arranged. By this attracted force, the difference of the drawing resistance of the cast sheet and the friction force between the metallic belt 1 and the cast sheet is supplemented. Therefore, the dummy bar 12 sticking to the cast sheet is smoothly drawn out together with rotation of the metallic belt 1. In case of producing the width change of the mold in the same running and even different kind of steel, the casting preparation time is shortened and reduction of the productivity is prevented.

20. 发明专利

JPS62238049A BELT COOLING METHOD FOR BELT TYPE CONTINUOUS CASTER 失效
公开(公告)号：JPS62238049A
公开(公告)日：1987-10-19
申请号：JP7831086
申请日：1986-04-07
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： BESSHO NAGAYASU , TOZAWA KOICHI , FUJII TETSUYA , KUGA MASAAKI , MORIWAKI SABURO , YASUKAWA NOBORU , TAMURA NOZOMI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To reduce the heat deformation of metallic belts and to make sure of the thickness accuracy of a casting sheet by supplying fluid having higher temp. than a cooling temp. at range, where the belts contact with molten metal or the casting sheet, to the range, brought into contact with the molten metal or the casting sheet, and the adjoining range. CONSTITUTION:Cooling pad 8, in which lines of water supplying holes and lines of drainage holes are arranged alternately, is arranged at the range, with where the metallic belt 2 and the casting sheet 7 contact. Warm water or steam, etc., is supplied to the metallic belt from water supplying holes B1 of the cooling pad 8, corresponding to the upper part of the meniscus position and water supplying holes B2 at the side margin part of the cooling pad 8 range corresponding to the range, where the metallic belt is brought into contact with the molten metal and the casting sheet, and cooling water is flowed out from water supplying holes A, to cool the metallic belt 2. In this way, the casting sheet makes sure of the thickness accuracy.

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