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1. 发明专利

JPH06246411A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH06246411A
公开(公告)日：1994-09-06
申请号：JP3693993
申请日：1993-02-25
申请人： KOBE STEEL LTD
发明人： MATSUDA HIROSHI , UEDA TERU , KIMURA MASAYASU
IPC分类号： B22D11/124 , B22D11/16 , B22D11/22
摘要： PURPOSE:To eliminate the surface crack of a cast slab by controlling the temp. of the continuously cast slab in the drawing direction so that the surface temps. at a bending part and a straightening part are apart from a temp. range becoming brittleness cided according to the used kind of steel, in the case of executing the continuous casting to the slab at a high by using a vertical bending type continuous casting. CONSTITUTION:At the time of executing the continuous casting to the steel slab at the casting speed of >=1.6m/min by using the vertical bending type continuous casting apparatus, the surface temp. of the cast slab 1 when the cast slab 1 passes through the first bending part B, is set to the temp. exceeding the temp. range becoming the brittleness of the steel material. Further, the surface temp. of the cast slab 1 when the cast slab 1 passes through the straightening part D at the downstream side, is set below the temp. range becoming the brittleness.

2. 发明专利

JPH0515956A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH0515956A
公开(公告)日：1993-01-26
申请号：JP17124691
申请日：1991-07-11
申请人： KOBE STEEL LTD
发明人： SAITO TADASHI , KIMURA MASAYASU , IZUMITANI MASAHITO , UEDA TERU
IPC分类号： B22D11/128 , B22D11/20
摘要： PURPOSE:To provide continuous casting method, by which the development of position obtaining no light rolling reduction effect is reduced and the improvement of yield and productivity can be expected at the time of executing the light rolling reduction casting. CONSTITUTION:Plural sets (four sets) of roll stands 8 as applicable to light rolling reduction are arranged in the applied zone to light rolling reduction in the continuous casting, and by changing roll gap interval in the roll stands 8 as applicable to light rolling reduction, matching to variation of solidification completion position operated with a light rolling reduction position changing control device 9 based on informations of variation of casting velocity, variation of molten steel temp., variation of cooling condition, etc., during continuous casting, the applied position to light rolling reduction is shifted to the longitudinal direction of casting.

3. 发明专利

JPH0390257A ELECTROMAGNETIC STIRRING METHOD IN MOLD IN CONTINUOUS CASTING FOR SLAB 失效
公开(公告)号：JPH0390257A
公开(公告)日：1991-04-16
申请号：JP16468590
申请日：1990-06-22
申请人： KOBE STEEL LTD
发明人： SOEJIMA TOSHIYUKI , SAITO TADASHI , MOTOMA NOBUYUKI , KIMURA MASAYASU , KAIHARA YASUO
IPC分类号： B22D11/10 , B22D11/115
摘要： PURPOSE:To reduce gas bubble involving inclusion, etc., into descending system by acting thrust force in drawing direction with an electromagnetic stirring device arranged at inside wide face or outside wide face in a mold for slab in the range except the prescribed length toward center from narrow face in the mold. CONSTITUTION:The electromagnetic stirring device 2 generating the thrust in the drawing direction of slab S arranged at the inside wide face of bending arc of the mold M for slab in a bending type continuous casting machine or in addition to the electromagnetic stirring device 2, further, electromagnetic stirring device 2' generating the thrust in the drawing direction of slab S arranged at the outside wide face 1' of the bending arc, are used. At the same time, the thrust in the drawing direction given to the molten steel 5 with these electromagnetic devices 2, 2', is practically acted in the range except the prescribed length L toward the center from side ends 4 at right and left sides of the cast wide face 3. In this result, the molten steel stream 6 is induced in the molten steel 5 and discharging flow velocity of the molten steel stream 9 discharged toward the narrow face direction from the discharging hole 8 in a submerged nozzle 7, is reduced and entering depth of the molten steel stream 10 entered into the slab S is restrained to prevent invasion of the bubble into inner part of the slab.

4. 发明专利

JPH0335135A METHOD AND DEVICE FOR MEASURING SURFACE TEMPERATURE OF MOVING CASTING PIECE 失效
公开(公告)号：JPH0335135A
公开(公告)日：1991-02-15
申请号：JP17099889
申请日：1989-06-30
申请人： KOBE STEEL LTD , YAMARI SANGYO KK , TSUBOSAKA KK
发明人： OTSUKA HIDEKI , KIMURA MASAYASU , UEDA TERU , KAWAKAMI SHIRO , TANIGUCHI HIDEO , TSUBOSAKA SHINJIRO , HIRAO SHIRO
IPC分类号： G01K7/02 , G01K13/06
摘要： PURPOSE:To measure the surface temperature of the moving casting slab securely, accurately, stably, and continuously by passing a couple of sheath jacket constitution wires between the casting slab and a roll while they are separated from each other. CONSTITUTION:The couple of sheath jacket constitution wires 130 and 140 are separated from each other in the axial direction of the roll R by passing through individual guide holes 210 and 220, and pass the roll R without crossing each other. Thus, the surface temperature of the casting slab is measured continuously by a thermocouple which moves by being fed as the casting slab G moves. As a matter of course, the casting slab surface temperature is securely and accurately measured from a temperature contact positioned in a metallic piece 120 embedded in the surface of the casting slab G. Specially, the constitution lines 130 and 140 are prevented from being superposed on each other or crossing each other. Therefore, thermocouple element wires are prevented from contacting each other to cause a short circuit or being broken, and the casting slab surface temperature can be measured continuously.

5. 发明专利

JPS6196392A Method of treating waste gas 失效
标题翻译：处理废气的方法
公开(公告)号：JPS6196392A
公开(公告)日：1986-05-15
申请号：JP21632484
申请日：1984-10-17
申请人： Mitsubishi Heavy Ind Ltd , Kobe Steel Ltd
发明人： ANDO JOJI , OKAYA HITOSHI , MATSUI KAZUO , ITO SHUZO , KIMURA TSUKASA , KIMURA MASAYASU
IPC分类号： C21C5/38 , C21C1/02 , F27D17/00

6. 发明专利

JPH07246448A METHOD FOR PREVENTING PIN HOLE DEFECT IN EXTRA LOW CARBON STEEL 失效
公开(公告)号：JPH07246448A
公开(公告)日：1995-09-26
申请号：JP3843694
申请日：1994-03-09
申请人： KOBE STEEL LTD
发明人： INOUE TAKESHI , YASUNAKA HIROYUKI , KIMURA MASAYASU , KOBAYASHI TAKASHI
IPC分类号： B22D11/00 , B22D11/04 , B22D11/055 , B22D11/22
摘要： PURPOSE:To prevent the pin hole defect developed at the time of continuously casting an extra low carbon steel by controlling a mold cooling water supplying device attached to a continuous caster to specify cooling water flow speed in a water cooling mold. CONSTITUTION:In the case of casting the extra low carbon steel through the continuous caster, the mold cooling water supplying device attached to the continuous caster is controlled in the range of 1-3m/s cooling water flow speed of the inner water cooling mold 1 to cast molten metal. Then, as the inner cooling water is made to flow through a cooling water passage 2 in the copper- made mold, cooling capacity of the mold 1 can be controlled by the flow speed of the cooling water. Further, the flow speed of the cooling water is varied by changing number of revolutions of a pump in the mold cooling water supplying device. By this method, the pin hole defect developed in the extra low carbon steel in the continuous casting is prevented, and the surface quality of a steel plate can be improved, and the excellent effect to prevent the sliver flaw of a cold-rolled steel sheet can be demonstrated.

7. 发明专利

JPH07132352A METHOD FOR CONTINUOUSLY CASTING STEEL 失效
公开(公告)号：JPH07132352A
公开(公告)日：1995-05-23
申请号：JP28120993
申请日：1993-11-10
申请人： KOBE STEEL LTD
发明人： YASUNAKA HIROYUKI , INOUE TAKESHI , KIMURA MASAYASU
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/16 , B22D27/04
摘要： PURPOSE:To prevent the growth of abnormal solidified structure caused by the development of solidified shell by suppressing the development of the solidified shell near a meniscus of molten steel in a mold in continuous casting for steel. CONSTITUTION:While measuring the molten steel (M) temp. in the mold (C) during casting, an electrode (E) inserted in molten mold power (P) above a meniscus (m) of the molten steel (M) is energized and the meniscus (m) part is continuously heated by the resistance heat of the mold power (P) and the temp. of the molten steel (M) positioned within 10mm below the meniscus (m) is controlled in the range of the liquidus temp. +10 deg.C to +20 deg.C to execute the continuous casting. By this method, the molten steel temp. near the meniscus is controlled in the optimal temp. range, and the excess growth of the solidified shell near the meniscus can be suppressed. Therefore, the development of the abnormal solidified structure easily trapping gas bubbles, inclusions, mold powder, etc., is prevented and the surface quality of the cast slab can be improved.

8. 发明专利

JPH058006A METHOD FOR DETECTING PERFECTLY SOLIDIFIED POSITION IN CONTINUOUSLY CAST SLAB 失效
公开(公告)号：JPH058006A
公开(公告)日：1993-01-19
申请号：JP16564991
申请日：1991-07-05
申请人： KOBE STEEL LTD
发明人： KIMURA MASAYASU , UEDA TERU , TAKAHASHI ISAO , HOSOYA SEIICHI
IPC分类号： B22D11/128 , B22D11/16
摘要： PURPOSE:To precisely detect the perfectly solidified position in a continuously cast slab. CONSTITUTION:Cast slab supporting rolls 2 in before and after perfectly solidified position, are constituted with the supporting rolls 2A for supporting unsolidified molten steel part 3 in width direction of the cast slab and the supporting rolls 2B for supporting both sides of the unsolidified molten steel position 2B, and load cells 8 are set only at between bearings 5 of upper supporting rolls 2A for supporting the unsolidified molten steel, part 3 and a frame 7 for roll stand. By difference of the loads loaded to supporting rolls between the unsolidified molten steel part and the perfectly solidified part, the perfectly solidified position can be precisely detected.

9. 发明专利

JPH058003A METHOD FOR CASTING WITH LIGHT ROLLING REDUCTION IN CONTINUOUS CASTING 失效
公开(公告)号：JPH058003A
公开(公告)日：1993-01-19
申请号：JP16565091
申请日：1991-07-05
申请人： KOBE STEEL LTD
发明人： KIMURA MASAYASU , UEDA TERU , TAKAHASHI ISAO , NAKAMURA YASUKI , KIMURA TSUKASA
IPC分类号： B22D11/128 , B22D11/16
摘要： PURPOSE:To secure the quality of a cast slab in on-line by precisely detecting the condition with a comparatively simple constitution in the case the solidified completing position is not the prescribed position at the time of casting with light rolling reduction and deciding whether the light rolling reduction effect (center segregation improving effect) exists or not, during casting. CONSTITUTION:Load cells 7A, 7B are set at between bearing parts 5A, 5B and stand frames of upper supporting rolls 4A, 4B in each cast slab supporting roll stand 3A, 5B arranged at upstrem side and downstream side, respectively, in the light rolling reduction applying zone 2 in a continuous caster 1, and loads acted to the cast slab supporting rolls 4A, 4B at the upstream side and the downstream side in the light rolling reduction applying zone 2, are measured, and also while confirming existence of the solidified completing position in the cast slab S at the time of casting with the light rolling reduction in the prescribed position in the light rolling reduction applying zone based on the measured result of these loads, the continuous casting is executed.

10. 发明专利

JPS6333173A REFINING CASTING EQUIPMENT 失效
公开(公告)号：JPS6333173A
公开(公告)日：1988-02-12
申请号：JP17598086
申请日：1986-07-26
申请人： KOBE STEEL LTD
发明人： SOEJIMA TOSHIYUKI , KOBAYASHI JUNKICHI , MATSUO KATSUYOSHI , KIMURA MASAYASU
IPC分类号： B22D1/00 , B22D47/00
摘要： PURPOSE:To eliminate the need for a stage for partial pouring by a small sized ladle and transporting the same and to prevent the drop of the molten metal temp. before pouring by constituting refining casting vessels imposed to plural vessel imposing frames provided to the peripheral part of a swiveling turret near a continuous casting mold in such a manner that said vessels can be turned downward. CONSTITUTION:The swiveling turret 1 is disposed near the continuous casting mold 3 and the refining casting vessels 6 which can be turned downward are imposed on the plural frames 4 provided to the peripheral part thereof. The molten metal 11 received from a large-size ladle 12 is added 9 with an alloy in the process of intermittent swiveling of the turret 1 and is subjected to gas stirring 10, slag removal 13 and stagnation; thereafter the molten metal is turned downward in the pouring position and is poured from a nozzle 7 into the casting mold 3. Since the stage for transporting the partially poured metal by the conventional small-sized ladle is omitted, the drop of the molten metal temp. on route is prevented. The installation of a high-frequency induction heater 8 to the bottom of the refining casting vessel 6 to prevent the drop of the molten metal temp. is an equally good practice.

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