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1. 发明专利

JPS63123551A COOLING METHOD FOR BELT IN BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPS63123551A
公开(公告)日：1988-05-27
申请号：JP26744686
申请日：1986-11-12
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： BESSHO NAGAYASU , FUJII TETSUYA , TOZAWA KOICHI , KUGA MASAAKI , YASUKAWA NOBORU , TAMURA NOZOMI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To lengthen the service life of a belt and to improve the thickness accuracy of a cast slab by setting water film thickness of the back face of belt and flow velocity of cooling water respectively to the specific ranges. CONSTITUTION:At the time of cooling the belt during casting by a belt cooling device arranging alternately water supplying hole and water discharging hole, the average water film thicknessdeltaw formed at the back face of belt is set to the range of 0.3-1.3 mm and further the average flow velocity (v) of cooling water is regulated at 6-14 m/sec. In this way, as the variation deltaw of water film is maintained in the min. suitable range, the deformation of belt caused by breaking the water film is prevented. The deviation h of cast slab thickness is developed as almost similar as the variation of water film deltaw. Therefore, by reducing the thermal deformation of belt, the service life of belt is lengthened, and by reducing the deviation of cost slab thickness, the thickness accuracy of cast slab is improved.

2. 发明专利

JPS63101054A BELT TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPS63101054A
公开(公告)日：1988-05-06
申请号：JP24615086
申请日：1986-10-16
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NOMURA ARITERU , KIMURA TOMOAKI , NISHINO TADASHI , SUZUKI TOSHIO , KUGA MASAAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent meandering of movable belt and to always uniformize the distribution of tension in lateral direction of movable belt by controlling roll inclining means and roll shifting means based on detecting signals of tension detecting means and position detecting means. CONSTITUTION:The tension of movable belt 10 is detected by the tension detecting means 50, 52 54 56. When the tensions of movable belt 10 are not uniformed in lateral direction, the arithmetic unit 60 controls a hydraulic cylinder 68 to shift a tension loading roll 34 in axial direction, and the movable belt 10 is dislocated to lateral direction, so as to eliminate the deviation. On the other hand, the position detecting means 72 detects the lateral directional position of the movable belt 10, to input to the arithmetic control apparatus 74. The arithmetic control apparatus 74 prevents the meandering of movable belt 10 by working the hydraulic cylinder 70, based on the position detecting device 72.

3. 发明专利

JPS62212042A BELT FOR SYNCHRONOUS TYPE BELT CASTER 失效
公开(公告)号：JPS62212042A
公开(公告)日：1987-09-18
申请号：JP5239886
申请日：1986-03-12
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KUGA MASAAKI , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent occurrence of splash when a driving metallic belt comes to a meniscus part and to improve the quality of a steel sheet surface by arranging diagonal grooves having the specified range of depth on the belt face brought into contact with molten steel in a synchronous type belt caster. CONSTITUTION:The diagonal grooves having one direction or cross direction is arranged on the metallic belt surface brought into contact with the molten steel, in the metallic belt 1, 2 of the synchronous type belt caster. Then, the depth range of the groove is 0.05-0.3mm as having sufficient wettability with the molten steel and no remaining the grooving shape to the casting sheet, and also pitch of the grooves is desirable to be about

4. 发明专利

JPS63174760A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPS63174760A
公开(公告)日：1988-07-19
申请号：JP317287
申请日：1987-01-12
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , INOUE TOMOAKI , KIMURA TOMOAKI , KUGA MASAAKI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/108
摘要： PURPOSE:To improve the productivity of continuous casting and the quality of a cast slab by crushing useless steel produced in a continuous casting direct rolling mill to granule fine steel pieces and adding the fine steel pieces into molten steel through a supplying nozzle after removing their oxide film. CONSTITUTION:The continuous casting apparatus cools the molten steel 11, which is poured between one pair of metallic belts 4, 4 ' shifted as circulating from a nozzle 2 of tundish 1, by cooling pads 6, 6 ' at back faces of the belts 4, 4 '. Next, the solidified cast slab 13 is sent to a cutter 7 and the rolling line of tandem mill 9 providing heat holding zone 8 to roll to a strip. Then, the useless steel produced at the continuous casting apparatus or succeeding production process is crushed into the granule fine steel pieces by a crusher 20. In succession, the fine steel pieces removing oxide film by a reducing treatment device 21 are supplied into the molten steel 11 through the supplying nozzle 23. In this way, the productivity of continuous casting is improved and the cast slab having good quality is produced.

5. 发明专利

JPS63126652A TWIN BELT CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS63126652A
公开(公告)日：1988-05-30
申请号：JP27292286
申请日：1986-11-18
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： MORIWAKI SABURO , KITANO YOSHIHISA , KUGA MASAAKI , EMOTO KANJI , BESSHO NAGAYASU , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To enable hot rolling without any heating continuously cast slab by arranging part of heat insulating coating layer and part of no coating layer toward longitudinal direction of steel-made belt in twin belt type continuous casting apparatus and restraining temp. dropping of continuously cast slab drawn from the casting apparatus. CONSTITUTION:Molten steel 1 in a tundish 2 is poured in a mold formed by the steel belts 3, 4 turning endlessly through two sets of supporting rollers 6, 7 and side blocks 5, arranging at the side faces of belts and shifting at the same velocity as the belt shifting, and is cooled by cooling of the belts 3, 4 through cooling nozzles 8 at the back face of the belts 3, 4, to draw by the pinch rolls as the continuously cast slab. In this case, the mold 10 having the heat insulating coating layer 9, which is formed by spraying through plural spray nozzle 12 toward longitudinal direction of the belts 3, 4, and no coating layer in the intermediate part, is formed. Or, the mold is formed by thick and thin heat insulating coating layers and temp. drop of continuously cast slab drawing from the continuous casting apparatus is reduced, to eliminate necessity of reheating at the time of rolling in the next hot rolling process.

6. 发明专利

JPS63115655A PRODUCTION OF CAST SLAB WITH HIGH TEMPERATURE 失效
公开(公告)号：JPS63115655A
公开(公告)日：1988-05-20
申请号：JP25829986
申请日：1986-10-31
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： KIMURA TOMOAKI , NISHINO TADASHI , KUGA MASAAKI , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To maintain a cast slab to high temp. at outlet side of a mold even if casting velocity is lowered by controlling thickness of mold releasing agent layer formed at the gap between mold wall face and solidified shell face in almost inverse proportion to the casting velocity. CONSTITUTION:The mold releasing agent layer 24 is formed by mixing the mold releasing agent 18 with N2 and Ar gas and blowing on the belt 1 by pressure of a pump 22 from a header 1 9 after atomizing it through a nozzle 20. Then, the oil in the mold releasing agent 18 is resolved into fine particles by high temp. action of the cast slab 15 and sticked to the mold wall face, and also by existence of air film corresponding to the thickness of mold releasing agent 18, the heat resistance is developed. Therefore, cooling of solidified heat in the mold having the constant cooling length at max. casting velocity is made to the standard, and according to become slower than its velocity, the thickness of the mold releasing agent is adjusted to thicker, so as to become no over-cooling of the cast slab in the mold and always cast the cast slab with high temp. Further, in case of a twin drum type continuous casting machine, the same effect is obtd.

7. 发明专利

JPS63112054A CARRIAGE COMMONLY USED FOR INSERTING AND DISCONNECTING DUMMY BAR AND GUIDING INGOT 失效
公开(公告)号：JPS63112054A
公开(公告)日：1988-05-17
申请号：JP25676386
申请日：1986-10-30
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： MORIWAKI SABURO , KUGA MASAAKI , YASUKAWA NOBORU , BESSHO NAGAYASU , KIMURA TOMOAKI
IPC分类号： B22D11/06 , B22D11/08 , B22D11/128
摘要： PURPOSE:To execute quick insertion and disconnection of a dummy bar and to shorten the time for prepn. of casting by providing a curved guide roll group for guiding the dummy bar, pinch rolls and an ingot guide curved in the direction opposite therefrom onto a carriage. CONSTITUTION:The carriage 16 commonly used for inserting and disconnecting the dummy bar and guiding the ingot is constituted by providing a group of the guide rolls 7 curved toward the carriage 16, the pinch rolls 5, 6 along the same and the ingot guide 18 curved in the direction from the curving direction of the guide rolls 7 onto the carriage 16 from the upper part thereof. The dummy bar is inserted by the carriage 16 into a casting mold constituted of a belt 1, etc., at the time of casting the thin ingot continuously by using the carriage 16. The dummy bar is pulled downward together with the ingot by means of the belt 1 and the pinch rolls 3 and is retreated onto the guide rolls 7 by the pinch rolls 5, 6 in the starting stage of casting. The dummy bar is disconnected when a dummy bar head arrives at the point A. The carriage 16 is moved in the direction of an arrow B and the ingot is drawn out to a leveling roll 9 side along the ingot guide 18.

8. 发明专利

JPS6360051A PRODUCTION OF THIN CAST STRIP 失效
公开(公告)号：JPS6360051A
公开(公告)日：1988-03-16
申请号：JP20178286
申请日：1986-08-29
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： MORIWAKI SABURO , KITANO YOSHIHISA , KUGA MASAAKI , YASUKAWA NOBORU , BESSHO NAGAYASU , KIMURA TOMOAKI
IPC分类号： B22D11/06 , B22D11/12 , B22D11/128
摘要： PURPOSE:To surely cast strip as high temp. without any heating stage by cooling so as to remain non-solidified range having the specific % of thickness for the cast strip at the position of finish roll of guide roll group in a secondary cooling zone and also reduction-rolling so as to eliminate the non-solidified part at the finish roll. CONSTITUTION:The finish rolls 6a, 6b in the secondary cooling zone are pressed to downward by a cylinder 8 and at this part, the upper shell 9s of cast strip and the lower shell 10s of cast strip are brought into control with mutually and while non-solidified molten steel 11 is pushed back toward upstream side, both shells are welded in order and so perfect solidification is realized. In this case, the cast strip is cooled, so as to remain to

9. 发明专利

JPS6343744A SHORT SIDE OF MOLD FOR CONTINUOUS CASTING FOR CAST STRIP 失效
公开(公告)号：JPS6343744A
公开(公告)日：1988-02-24
申请号：JP18699186
申请日：1986-08-11
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： YASUKAWA NOBORU , MIZOTA HISAKAZU , KUGA MASAAKI , BESSHO NAGAYASU , KIMURA TOMOAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the double skin and flash in a cast strip by arranging a projection, which is lowered gradually toward lower part, on a heat insulating layer of short side in a mold. CONSTITUTION:The short side in the mold provides metallic plate 4c arranging cooling water holes 9 on the face contacting with metallic belts 1, 2 aud also the metallic plate 4b having constant width is arranged at the lower part thereof. On the metallic plate 4c, which is adjacent place with a heat insulating layer 4a and the metallic plate 4c, the projection 4d formed as lowering gradually toward the lower part from height (h) is arranged. Next, the short side in the mold composing of the metallic plate 4c and the metallic plate 4b is supported by a back-up plate 11 to cool by the cooling water 10. The tip of solidified shell at the time of casting continuously becomes to L-shape to prevent the waving deformation of the shell 5b aud ths insertion of the molten steel 5a. Therefore, in this way, development of the double skin and flash in the cast strip is prevented.

10. 发明专利

JPS6326246A METHOD FOR PREVENTING METAL PENETRATION OF BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPS6326246A
公开(公告)日：1988-02-03
申请号：JP16672886
申请日：1986-07-17
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 prevent the generation of metal penetration and to stabilize casting by changing the pressing force of a metallic belt to a mold short side by control of a differential pressure, etc., thereby controlling the spacing between the metallic belt and the mold short side. CONSTITUTION:A water film 11 is formed between the metallic belt 1 and cooling pad of a belt type continuous casting machine so that the metallic belt 1 is cooled and supported by said film. The metallic pad is segmented to end headers 12a, 12b and intermediate header 13 in the transverse direction of the belt to permit the independent adjustment of the pressure of the water film 11 formed to the rear surface at the end of the belt 1. The pressing force of the belt 1 is changed by changing the water supply rate from the end headers 12a, 12b into the water film 11. The clearances between both ends of the metallic belt 1 and the mold short sides are controlled and the generation of the metal penetration therein is prevented by the above-mentioned method. Since the wear of the mold short sides is decreased, the casting is stabilized.

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