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21. 发明专利

JPH07303943A CONTINUOUS CASTING APPARATUS AND METHOD FOR CHANGING ITS MOLD 失效
公开(公告)号：JPH07303943A
公开(公告)日：1995-11-21
申请号：JP9975894
申请日：1994-05-13
申请人： HITACHI LTD
发明人： YASUNARI SHINICHI , NISHINO TADASHI , AZEZAKI MASAYUKI , ISHIKAWA EIJI , YOSHIMURA YASUTSUGU , HORII KENJI , FUTAKI TAKAO
IPC分类号： B22D11/04
摘要： PURPOSE:To miniaturize and lighten the parts to be shifted at the time of changing a mold and to execute the change of the mold in a short time, in a continuous casting apparatus and a method for changing its mold. CONSTITUTION:A mold unit 1 is constituted with the mold 11 and a cast slab supporting device 12 and further, is shiftable with wheels 13. After completing the casting operation, the mold unit is risen to the level of guide rails 6a, 6b from vibrating tables 3a, 3b with an elevating rail 16 and shifted to a waiting position C on the guide rail 6b through a mold unit carrying in/out device 10. Successively, a mold unit 2 having the same constitution as the mold unit 1, is shifted to the elevating rail 16 from a waiting position B on the guide rail 6a through a mold unit carrying in/out device 8 and lowered with the elevating rail 16 and fitted to vibrating tables 3a, 3b. At this time, the positioning of the mold unit 2 is easily executed by the guiding part.

22. 发明专利

JPS5844951A CONTINUOUS CASTING DEVICE 失效
公开(公告)号：JPS5844951A
公开(公告)日：1983-03-16
申请号：JP14102581
申请日：1981-09-09
申请人： HITACHI LTD
发明人： HORII KENJI , KIMURA TOMOAKI , NISHINO TADASHI
IPC分类号： B22D11/06
摘要： PURPOSE:To support the entire part of endless belts uniformly under static pressure and to maintain continuous casting adequately by segmenting the recesses of hydrostatic pressure supporting devices on the rear surfaces of the endless belts which face each other at a prescribed spacing and form a mold into small areas. CONSTITUTION:Hydrostatic pressure supporting devices are provided with plural recesses 32 in array in a width direction as well. When the solidified shell 13 of an ingot is deformed so as to project the central part thereof toward the bodies 31 of the supporting devices, the spacings between the recesses 32 located in the central parts of the bodies 31 and the rear surfaces in the central parts of endless belts 18 decrease, the pressure in the recesses 32 increases and the force trying to push back the central parts of the belts 18 to the home position generate. Since the spacings between the recesses 32 and the belts 18 increase in the respective recesses 32 located in both end parts of the bodies 31, the force to be returned to the home position acts in both end parts of the belts 18 in the tendency reverse from that in the above-described central parts, whereby the self-adjusting power is provided, and the entire parts of the belts 18 are supported uniformly under static pressure.

23. 发明专利

JPS5788950A SYNCHRONIZING TYPE CONTINUOUS CASTING DEVICE 失效
公开(公告)号：JPS5788950A
公开(公告)日：1982-06-03
申请号：JP16334680
申请日：1980-11-21
申请人： HITACHI LTD
发明人： NISHINO TADASHI , HORII KENJI
IPC分类号： B22D11/06
摘要： PURPOSE:To extend the service life of short-side stationary side plates for a broad ingot by making said side plates of pure copper and mounting carbon- contg. bearing alloys to the parts in contact with long side moving beltlike bodies in a mold in a synchronizing type continuous casting device for casting molten steel to the broad ingot at high speeds. CONSTITUTION:In casting a broad ingot with a synchronizing type continuous casting device, short-side side plates 18 constituting a mold are constituted of water cooled blocks 22 made of pure copper provided with cooling grooves 24 and back plates 23 supporting these. The end parts of the blocks 22 which contact the moving type beltlike bodies 4, 5 constituting the long sides of the mold are mounted with projecting parts 25 of grease-less bearing alloys such as graphite-contg. aluminum bronze or the like by padding or welding. Since there is no need for coating lubricants between the continuously cast ingot moving in the mold and the side plates 18, the occurrence of explosion accidents occuring in lubricants and the generation of rugged defects on the ingot surfaces are obviated and the life of the stationary side plates are extended.

24. 发明专利

JPH11267721A ROLL STRUCTURE, BEARING STRUCTURE OF ROLL, ROLLING MILL USING THAT STRUCTURE AND METHOD FOR MODIFYING ROLLING MILL 失效
公开(公告)号：JPH11267721A
公开(公告)日：1999-10-05
申请号：JP6978198
申请日：1998-03-19
申请人： HITACHI LTD
发明人： HORII KENJI , TAKAGI MICHIMASA
IPC分类号： B21B27/02 , B21B31/07 , F16C13/02 , F16C33/78
摘要： PROBLEM TO BE SOLVED: To miniaturize collars around the neck of a rolling roll. SOLUTION: In the structure of rolling roll provided with a shaft part 1a and barrel part 1b, a stepped part which is abutted on the inner race 3 of a bearing is provided on the side of the barrel part 1b of this shaft part 1a. The collars 10, 11 for sealing are attached so as not to abut on the inner race 3 of this bearing. Or, the stepped part is provided on the side of the barrel part 1b of the shaft part 1a, the inner race of this bearing is abutted on the end face of this stepped part and the collars for sealing are attached. Then, by compacting the structure around the roll neck, the length of the roll barrel 1b is extended without changing the position of the bearing substantially.

25. 发明专利

JPH1119756A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH1119756A
公开(公告)日：1999-01-26
申请号：JP17804297
申请日：1997-07-03
申请人： HITACHI LTD
发明人： HIRANO SATOSHI , HORIUCHI HISAAKI , HORII KENJI , NISHINO TADASHI , SHIMOGAMA HIRONORI , ISONO MITSUHISA
IPC分类号： B22D11/08 , B22D11/04
摘要： PROBLEM TO BE SOLVED: To reduce the development of breakout and to relatively lower the cost by arranging the projections contacting with the curving surface of long sides in a mold to a part of a dummy bar head to obtain such a same action as the existence of large strength solidified shells at the outside of small strength solidified shell. SOLUTION: The SPCC-made projections 12 having e.g. 0.5 mm thickness, are fitted to the dummy bar head 10 so as to contact with the surfaces of the long sides in the mold. The size of the projection 12 in the width direction of a cost slab is made to almost the same size as the cast slab. In the estimation with calculation, e.g. the solidified shell thickness at 100 mm below a meniscus is about 2 mm at both stages of the initial stage of casting and in the stationary state, and it is considered that this thickness does not differ so large at both stage. However, in the initial stage of casting, the drawing resistance is large, because the lubrication with powder is insufficient, and it is considered that the strength of the solidified shell is smaller than or the same degree as the drawing resistance. In the case of using the dummy bar head with the projections, since such a same action is obtd. as thickening the solidified shells at the long sides in the mold at the initial stage of casting, the development of the breakout is reduced.

26. 发明专利

JPH09174117A METHOD FOR JOINING METALLIC PLATES AND DEVICE THEREFOR 失效
公开(公告)号：JPH09174117A
公开(公告)日：1997-07-08
申请号：JP28366196
申请日：1996-10-25
申请人： HITACHI LTD
发明人： ISHIKAWA NORITOSHI , FUNAMOTO TAKAO , NAGAKUBO HAJIME , MASUKO TAKASHI , NISHINO TADASHI , NIHEI MITSUO , HORII KENJI
IPC分类号： B21B15/00 , B21B1/26 , B21D39/03 , B23K20/00 , B23K37/04
摘要： PROBLEM TO BE SOLVED: To join metal plates having enough strength in a short time by lapping joining scheduled parts of metallic plates, supporting them from the lower side with supporting stands and relatively moving them so that the lapping part is clamped between a cutting blade and the supporting stand. SOLUTION: A lapping part of metallic plates is clamped from upper and lower sides and fixed. A cutting blade is lowered from an upper direction. A lap part (part to be clamped and pressed) showing in hatching exists on the extending area of the motion locus of the cutting blade and the clamp of the lower side. The lap part is pressed from the upper and lower direction. Because the metallic plate to be joined is restricted, the escaping place of the pressure exists only to the lateral direction. Following the shearing blade is lowered downward, the pressure to the lateral direction is raised. With this pressure, the metal of pressing part is deformed plastically. The shearing blade is lowered until matching upper and lower faces of an upper metallic plate and a lower metallic plate, and it is stopped. The front face of plastic flow part is made largely active. Because mutual parts of the upper and lower metal plates of plastic deformation flowing are pressed, the firm joining is realized.

27. 发明专利

JPH08141715A CONTINUOUS CASTING APPARATUS AND CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH08141715A
公开(公告)日：1996-06-04
申请号：JP27816594
申请日：1994-11-11
申请人： HITACHI LTD
发明人： HORII KENJI , SHIMOGAMA HIRONORI , NISHINO TADASHI , AZEZAKI MASAYUKI , ISHIKAWA EIJI , HIRANO SATOSHI , ISONO MITSUHISA
IPC分类号： B22D11/16 , B22D11/04 , B22D11/05 , B22D11/059
摘要： PURPOSE: To provide a continuous casting apparatus and a method thereof which reduces a step developed between cast slabs caused by difference of dimensional precision and wearing form during casting and can prevent the development of a trouble in the cast slab, at the time of constituting a part of the wall of a mold which is brought into contact with molten metal with plural different materials. CONSTITUTION: Short side molds 2a, 2b at upstream side with a refractory and short side molds at downstream side with a metal of copper, etc., are constituted, and the continuous casting is executed by a contracted casting system widening the upper part of the short side mold in the thickness direction of the cast slab and gradually narrowing toward the lower part in the mold 1. Then, the short side mold 2a, 2b at upstream side and the short side molds at downstream side are suitably advanced/retreated in the direction of the molten metal, and in the case of developing the step caused by the difference of the dimensional precision between the refractory and the metals and the difference of the wearing form during casting work, this step is reduced so as to put in a prescribed permissible range.

28. 发明专利

JPH0899158A THIN SLAB CONTINUOUS CASTING MACHINE AND METHOD FOR CONTINUOUSLY CASTING THIN SLAB 失效
公开(公告)号：JPH0899158A
公开(公告)日：1996-04-16
申请号：JP23688294
申请日：1994-09-30
申请人： HITACHI LTD
发明人： YOSHIMURA YASUTSUGU , ONOSE MITSURU , HORII KENJI , SEKI KOICHI , NISHINO TADASHI , SHIMOGAMA HIRONORI , HANZAWA CHUKICHI
IPC分类号： B21B1/46 , B21B31/02 , B22D11/12 , B22D11/124 , B22D11/22
摘要： PURPOSE: To provide a thin slab continuous casting machine and a method for continuously casting the thin slab by which the slab temp. can be kept at the temp. possible to roll the slab even in the cast of changing casting speed according to the variation of the supplying rate of molten steel. CONSTITUTION: Guide rollers 4a-d having cooling spray are able to advance/ retract in the thickness direction of the slab 6 and cast slab heat insulating covers 15a-15d are inserted to/drawn out from the gap formed between these guide rollers. Then, someone at suitable positions out of the guide rollers 4a-4d and the cast slab heat insulating covers 15a-15d are switched over in use according to the casting speed. The cooling speed of the slab 6 is positively controlled by adjusting the length of a cooling zone and a heat insulating zone.

29. 发明专利

JPH07308701A HOT ROLLING DEVICE DIRECTELY CONNECTED TO CONTINUOUS CASTING AND ROLLING METHOD THEREFOR 失效
公开(公告)号：JPH07308701A
公开(公告)日：1995-11-28
申请号：JP10268794
申请日：1994-05-17
申请人： HITACHI LTD
发明人： KAJIWARA TOSHIYUKI , YOSHIMURA YASUTSUGU , HORII KENJI , SEKI KOICHI , SHIMOGAMA HIRONORI , NISHINO TADASHI , HANZAWA CHUKICHI , GOTO AKIRA
IPC分类号： B22D11/12 , B21B1/00 , B21B1/26 , B21B1/46 , B21B13/02 , B21B13/14 , B21B13/22 , B21B27/10 , B21B28/04 , B21B29/00 , B21B31/18 , B21B31/20 , B21B45/00 , B21B45/06 , B21B45/08 , B21C47/02
摘要： PURPOSE:To enable low speed rolling to be carried out while suppressing the temp. drop of a rolled stock and the generation of scale and to realize true mini hot-rolling by rolling a slab whose thickness is thiner than a specified value with equipment in which a continuous casting machine and a hot rolling mill are directely connected. CONSTITUTION:By executing the temp. rising and scale removal of the slab 2 of

30. 发明专利

JPH07185605A EQUIPMENT AND METTHOD FOR PRODUCING HOT ROLLED SHEET MATERIAL 失效
公开(公告)号：JPH07185605A
公开(公告)日：1995-07-25
申请号：JP33489893
申请日：1993-12-28
申请人： HITACHI LTD
发明人： KIMURA TOMOAKI , YOSHIMOTO KENICHI , HORII KENJI
IPC分类号： B21B1/32 , B21B1/46 , B21B45/00
摘要： PURPOSE:To produce slabs by the stable continuous casting operation and to produce hot rolled sheet materials having good quality with a compact equipment by arranging coiling used for both coiling and un-coiling respectively on the inlet and outlet sides of a rolling mill group and rolling the slabs having a specific thickness with plural passes while respetitively coiling an uncoiling the slabs with these coilers. CONSTITUTION:The slab 3 from a casting machine capable of executing stable casting in 60 to 120mm thickness is efficiently hot rolled with the equipment arranges after the casting machine, in order of a cutting machine 4, a rapid heater 5, a holding furnace 6, the reversible type rolling mills 17, 18 having two units or >=2 units of rolling mill group capable of uncoiling the slabs on the inlet and outlet sides and a product coiler 27. The hot rolled sheet products 25 are efficiently produced with the equipment with short length. The heating after cutting of the slab 3 is executed by the rapid heater 5 with an induction or energization system, by which the slab 3 is rapidly heated up to a prescribed high temp. and, therefore, the holding time for making the structure of the slab 3 uniform is shortened and the holding furnace 6 is minimized.

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