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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

JPS5823820B2 失效
公开(公告)号：JPS5823820B2
公开(公告)日：1983-05-17
申请号：JP1783979
申请日：1979-02-20
申请人： KAWASAKI STEEL CO
发明人： SHIBATA MASARU , KUGA MASAAKI
IPC分类号： B22D7/00 , B22D7/06 , B22D7/12

5. 发明专利

JPS5614053A CASTING METHOD OF RIMMED STEEL INGOT 失效
公开(公告)号：JPS5614053A
公开(公告)日：1981-02-10
申请号：JP8955379
申请日：1979-07-14
申请人： KAWASAKI STEEL CO
发明人： ASAHO RIYUUICHI , KUGA MASAAKI , YAJI GENPEI
IPC分类号： B22D7/00
摘要： PURPOSE:To improve the quality of the one having been cast first by heating the mold and molding board to be used for the first ingotting prior to pouring at the time of casting molten rimmed steel into a top pouring mold. CONSTITUTION:Since the rimmed steel ingot obtained by the mold used for the first ingotting becomes a product of poor quality, the mold temperature is raised up to a predetermined temperature just before casting to prevent the drop in molten steel pouring temperature. For example, at the time of casting molten rimmed steel into the molds to used for the first and subsequent order, the temperature is so controlled that its pouring temperature becomes 1555 deg.C. Said first mold is heated for 30 minutes by using a burner to heat the mold inside and the molding board, after which casting is performed. As a result, the rimming decision of the steel ingot is middle and the results of the formation of super flaws of this steel plate becomes good, thus the defective steel ingots are eliminated at all.

6. 发明专利

JPS53103934A CASTING OF COMPOSITE METAL CASTED INGOT 失效
公开(公告)号：JPS53103934A
公开(公告)日：1978-09-09
申请号：JP1803877
申请日：1977-02-23
申请人： KAWASAKI STEEL CO
发明人： KAWANA MASASHI , KATSUKI JIYUNICHI , KUGA MASAAKI , KAWARADA AKIRA
IPC分类号： B22D19/16 , B22D7/02 , B22D19/00

7. 发明专利

JPS5240435A MANUFACTURE OF COMPOSITE METALS BLOCK 失效
公开(公告)号：JPS5240435A
公开(公告)日：1977-03-29
申请号：JP11606275
申请日：1975-09-26
申请人： KAWASAKI STEEL CO
发明人： EMI TOSHIHIKO , KASAI GOROU , SADAYORI SADAO , ADACHI SHINICHIROU , KAWANA MASASHI , KUGA MASAAKI
IPC分类号： B22D19/00 , B22D7/02 , B22D19/08

8. 发明专利

JPH07126737A METHOD FOR VACUUM-DECARBURIZING MOLTEN STEEL 失效
公开(公告)号：JPH07126737A
公开(公告)日：1995-05-16
申请号：JP27206093
申请日：1993-10-29
申请人： KAWASAKI STEEL CO
发明人： NISHIGORI MASANORI , NISHIKAWA HIROSHI , KUGA MASAAKI , ISHIZUKA HARUHIKO
IPC分类号： C21C7/068 , C21C7/10
摘要： PURPOSE:To prevent the spattering of splash into a treating device from molten steel in a ladle and the overflow caused by slopping during vacuum- decarburizing treatment by laying a middle cover on the ladle through a water- cooling ring. CONSTITUTION:The ladle 6 containing he molten steel 7 is charged into a vacuum vessel 1 for VOD and covered with the middle cover 4, and oxygen is blown to the molten steel 7 from a lance 2 penetrating the middle cover 4 to execute the vacuum decarburizing and degassing treatment. At this time, the water-cooling ring like member 5 having at least 100mm height is laid at the upper end of the ladle 7 and the middle cover 4 is laid on this member, and while blowing the oxygen from lances 3 having oxygen feeding function separated from the top blowing lance 2 penetrating the middle cover 4, the decarburization is executed. The middle cover 4 is made of refractory or an iron cover coated with the refractory in used and, if necessary, this side surface may have a water-cooling structure.

9. 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.

10. 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.

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