专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JPH05169210A DISCHARGING TREATMENT APPARATUS FOR PLUGGING SAND IN LADLE AND REMAINED STEEL SLAG IN TUNDISH IN CONTINUOUS CASTER 失效
公开(公告)号：JPH05169210A
公开(公告)日：1993-07-09
申请号：JP34067691
申请日：1991-12-24
申请人： KAWASAKI STEEL CO
发明人： MATSUKAWA TOSHITANE , UMADA HAJIME
IPC分类号： B22D11/10 , B22D43/00
摘要： PURPOSE:To facilitate an exchange of a pot from a discharging treatment apparatus even if metal is burning-stuck to the charging/ discharging pot for discharging plugging sand in a ladle and carrying. CONSTITUTION:The pot 18 supported through pot shafts 22 to open type shaft receivers 21 opening the upper parts of brackets 17 fitted to a lifting frame 14 at the upper end part of a guide frame 8, is waited. At the time of discharging the plugging sand filled in a steel discharging hole in the ladle 1 into the pot 18, by driving a driving device 16, a wire is wound back and the pot 18 is descended and laid on a shifting carriage 27 in the lower end part. Then the pot shafts 22 are automatically detached from the open type shaft receiver 21. As the pot shafts 22 are supported on the open type shaft receiver 21 opening the upper parts, even if the pot 18 can not be used because the metal is burning- stuck, the exchange with the spare pot is facilitated.

82. 发明专利

JPH05131252A DEVICE FOR CONVEYING HIGH TEMPERATURE SLAB OR THE LIKE 失效
公开(公告)号：JPH05131252A
公开(公告)日：1993-05-28
申请号：JP5317891
申请日：1991-02-26
申请人： KAWASAKI STEEL CO
发明人： YOSHIDA MASAHIRO , MATSUKAWA TOSHITANE , KIKUKAWA HIROYUKI
IPC分类号： B22D11/12 , B61D3/16
摘要： PURPOSE:To shorten the conveying time of a high temp. slab by arranging a swinging door as freely opening/closing as centering a cylindrical axis in a heat holding chamber along a peripheral wall of the heat holding chamber at an opening part. CONSTITUTION:At first, in order to make the conveying device high velocity, the heat holding chamber 3 in a carriage 1 is made to the cylindrical shape. Then the opening part formed by cutting the peripheral wall of the cylindrical heat holding chamber 3 is arranged. The door 4 having substantially the same shape as the opening part is swung as centering the cylindrical axis O of the heat holding chamber 3 along the inner peripheral wall or the outer peripheral wall of the heat holding chamber 3 and has the structure which is not projected to the outside of the heat holding chamber 3 at the time of opening/closing the door. Therefore, the conveying time of the high temp. slab 9 can drastically be shortened and continuous casting process and rolling process can substantially be continued.

83. 发明专利

JPH04327362A DISCHARGING TREATMENT DEVICE FOR PLUGGING SAND INTO STEEL DISCHARGING HOLE IN LADLE 失效
公开(公告)号：JPH04327362A
公开(公告)日：1992-11-16
申请号：JP9914491
申请日：1991-04-30
申请人： KAWASAKI STEEL CO
发明人： YUHARA SUSUMU , MATSUKAWA TOSHITANE
IPC分类号： B22D41/46 , B22D43/00
摘要： PURPOSE:To easily take out solidified plugging sand together with molten steel from the inner part of a discharging pot after discharging the plugging sand for a steel discharging hole in a ladle together with the accompanied discharging molten steel into the discharging pot. CONSTITUTION:On the way of a course for shifting the ladle 1 loaded on a ladle turret 2 above a tundish 3, the discharging pot 5 is put. At this time, a steel plate welding structural solidification accelerator 6 having a hanging hole 19 in the discharging pot 5 is preset. The ladle 1 is stopped above the discharging pot 5, and after fully discharging the plugging sand packed in the steel discharging hole, the ladle is shifted above the tundish 3 and the pouring of molten steel is started. The plugging sand and the accompanied molten steel discharged in the discharging pot 5 are cooled with the solidification accelerator 6 to form a solidified block 20. The solidified block 20 can be easily taken out only by hanging this from the discharging pot 5 with a hanging tool 7.

84. 发明专利

JPH04274851A CONTINUOUS CASTING METHOD AND DEVICE 失效
公开(公告)号：JPH04274851A
公开(公告)日：1992-09-30
申请号：JP3270391
申请日：1991-02-27
申请人： KAWASAKI STEEL CO
发明人： YUHARA SUSUMU , MATSUKAWA TOSHITANE
IPC分类号： B22D11/08
摘要： PURPOSE:To save the waste of time from the end of casting before the start of the prepn. for casting and to increase through part by installing two pieces of dummy bars online and alternately charging these dummy bars. CONSTITUTION:Two pieces of the dummy bars A, B are installed online per strand and a supporting device 8 for preventing the fall of a dummy bar 6 on stand-by under a hoisting winch 5 of the dummy bars is provided. The dummy bars A, B are alternately charged. The generation of loss time is prevented in this way.

85. 发明专利

JPH0387315A PRODUCTION OF GRAIN-ORIENTED MAGNETIC STEEL SHEET EXCELLENT IN MAGNETIC PROPERTY AND SURFACE CHARACTERISTIC 失效
公开(公告)号：JPH0387315A
公开(公告)日：1991-04-12
申请号：JP22165489
申请日：1989-08-30
申请人： KAWASAKI STEEL CO
发明人： NAMURA NATSUKI , MATSUKAWA TOSHITANE
IPC分类号： C21D8/12 , H01F1/16
摘要： PURPOSE:To produce a grain-oriented magnetic steel sheet excellent in magnetic proper ties and surface characteristics by carrying out continuous squeezing and slab heating under respectively specified conditions before the solidification of a cast slab drawn out from a mold is completed in the continuous casting process for a silicon-containing steel slab. CONSTITUTION:A silicon-containing steel slab is prepared by a continuous casting method and subjected to slab heating and then to a series of stages consisting of hot rolling, cold rolling, decarburizing and primary recrystallization annealing, and final finish annealing, by which a grain-oriented magnetic steel sheet is produced. In the above continuous casting process, a cast slab drawn out from a mold is subjected to continuous squeezing satisfying an inequality delta/d>=0.5 [(delta) means total rolling reduc tion (mm) by squeezing and (d) means unsolidified thickness (mm) at a squeezing position, where 100% solid-phase rate is regarded as solidification boundary] at the position where solid-phase rate (fs) in the central part of the cast slab comes to 0.5-0.9 in the stage before solidification is completed in the inner part of the cast slab, and further, slab heating is carried out at a low temp. region of 1280-1350 deg.C.

86. 发明专利

JPH0335852A METHOD OF STARTING FORGING TO CAST SLAB STRAND IN CONTINUOUS FORGING WORK 失效
公开(公告)号：JPH0335852A
公开(公告)日：1991-02-15
申请号：JP16705989
申请日：1989-06-30
申请人： KAWASAKI STEEL CO
发明人： MIZOTA HISAKAZU , KOJIMA SHINJI , MATSUKAWA TOSHITANE , FUJIMURA TOSHIO , KUSHIDA KOICHI , YOSHIMOTO YOSHIO , YUHARA SUSUMU
IPC分类号： B22D11/128 , B21J1/04 , B22D11/20
摘要： PURPOSE:To execute satisfied forging work even if equipment capacity for forging device is lowered by approaching and separating forging dies inserting pass line two or more times and executing forging reduction to position of forging start to the aimed forging reduction ratio. CONSTITUTION:The forging dies insert a cast slab strand between upper and lower and the forging work is executed to the finish solidified zone in the cast slab strand by mutually approaching and separating them. At this time, the position of forging start is changed dividing into two or more times and the forging reduction is executed till the aimed forging reduction ratio. Casting start time in each mold and casting velocity in each drawn cast slab strand are controlled so as to shift the forging start time in each strand. By this method, contacting area between the cast slab strand and the forging dies can be reduced and the necessary forging capacity in the forging device can be reduced. Further, the forging reduction ratio per one time becomes little.

87. 发明专利

JPH02200362A METHOD FOR PREDICTING AND RESTRAINING NOZZLE CLOGGING IN CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH02200362A
公开(公告)日：1990-08-08
申请号：JP1753289
申请日：1989-01-30
申请人： KAWASAKI STEEL CO
发明人： YUHARA SUSUMU , MATSUKAWA TOSHITANE
IPC分类号： B22D11/10 , B22D11/16 , B22D11/18 , B25J9/06
摘要： PURPOSE:To reduce nozzle clogging and to obtain a cast slab having good inner quality by measuring nozzle opening degree for controlling discharging flow rate of molten steel, gas flow rate for blowing into a submerged nozzle part amt. of casting and molten steel level in a tundish, respectively and processing the nozzle clogging rate. CONSTITUTION:In an operating processor 20, a molten steel level signal (h) in the tundish 1 from a molten steel level meter 8, an inert gas flow rate signal Q for blowing into the submerged nozzle 4 from a flow meter 9, an opening degree signal S of the nozzle 3 for controlling discharging flow rate from a displacement gage 12 and a drawing velocity of a pinch roll 17, that is, casting velocity VR from a casting velocity meter 19, are inputted, respectively. The nozzle clogging rate is processing according to the prescribed equation and the opening degree of the nozzle 3 for controlling the discharging flow rate fitting the submerged nozzle through a servo valve 13 is controlled to control the molten steel discharging flow rate. By this method, the nozzle clogging rate in the discharging hole part of the submerged nozzle is shown as the opening hole area ratio in the discharging hole part, and the gas blowing rate into the submerged nozzle and molten metal surface surface control system in the mold are controlled according to this value.

88. 发明专利

JPH0215857A METHOD FOR CONTINUOUSLY FORGED-PRESSING CAST SLAB IN CONTINUOUS CASTING 失效
公开(公告)号：JPH0215857A
公开(公告)日：1990-01-19
申请号：JP16382288
申请日：1988-06-30
申请人： KAWASAKI STEEL CO
发明人： MIZOTA HISAKAZU , KOJIMA SHINJI , MATSUKAWA TOSHITANE
IPC分类号： B22D11/128 , B21B1/02 , B21B1/46 , B21B15/00 , B21J5/00 , B22D11/12
摘要： PURPOSE:To improve inner defect of center segregation, etc., without developing inner crack and to produce a sound cast slab by rolling down the slab drawn out from a mold for continuous casting in the downstream at the specific pressing cycle to execute the forged-pressing work. CONSTITUTION:Solidified shell 1a obtd. with the mold 7 for continuous casting is drawn out through guide rolls 4, and after giving the molten metal part 1b, which is not yet solidified, electromagnetic stirring with an electromagnetic stirring device 3, dies 2 are worked with pressing cylinders 5 at near completion of the solidification in the downstream, to continuously forgedwork and draw as cast slab 1 with pinch rolls 6. In the above continuous casting, the cast slab 1 is pressed with the dies 2 at the pressing cycle satisfying t ) (wherein, t: pressing cycle sec, delta: pressing rate mm, Vc: casting velocity mm/sec, D: thickness of cast slab before forging mm). Further, it is desirable that dies 2 have inclination satisfying theta deg. mu (wherein, theta deg.: inclined angle to the flat face, mu: coefficient of friction between the die 2 and the cast slab 1) and pressing is executed at suitable pressing width.

89. 发明专利

JPH01202342A METHOD AND APPARATUS FOR CONTINUOUSLY CASTING BLOOM OR THE LIKE 失效
公开(公告)号：JPH01202342A
公开(公告)日：1989-08-15
申请号：JP2345088
申请日：1988-02-03
申请人： KAWASAKI STEEL CO
发明人： MATSUKAWA TOSHITANE , KOJIMA SHINJI
IPC分类号： B22D11/04
摘要： PURPOSE:To remarkably reduce tensile strain at solidified interface and to improve the productivity by denting a part of upper side face in a cast bloom to form the dented part at the time of continuously casting the bloom, etc., by straightening to horizontal shape after drawing the cast bloom vertically cast from a mold. CONSTITUTION:Molten steel from a tundish is poured into the mold 1 (1a, 1b) and cast to vertical state. The cast bloom 5 is drawn from the mold 1 and curved as arc state at curving part 2 and shifted to horizontal straightening part 3 through a straightening point Q. The cast bloom is prescribed with upper and lower pinch rolls 4 in the horizontal straightening part 3 to straighten to the horizontal shape, and after completing solidification of the molten steel at solidified completing point P, the cast bloom is cut with torch cutter, etc., at outer side of the horizontal straightening part 3. Before the cast bloom 5 reaches to the straightening point Q, a part of the upper side face 5a in the cast bloom 5 is dented to form the dented part 6. By this method, at the time of straightening the cast bloom at the horizontal straightening part 3, the tensile strain at the solidified interface in the upper side face of the cast bloom 5 is reduced and even if the casting speed is raised, the continuous casting can be executed. Further, the internal cracking is not developed and the productivity can be improv.

90. 发明专利

JPH01202341A MOLD FOR HORIZONTAL CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01202341A
公开(公告)日：1989-08-15
申请号：JP15374988
申请日：1988-06-22
申请人： KAWASAKI STEEL CO
发明人： TAKADA SHIGENOBU , KOJIMA SHINJI , MATSUKAWA TOSHITANE , KAYANO TOMOO , HAMANISHI NOBUYUKI
IPC分类号： B22D11/04 , B22D11/045
摘要： PURPOSE:To restrain uneven temp. on cross sectional plane of solidified shell at initial stage in a mold and to improve stability of casting by arranging static magnetic field generator, so that magnetic flux is penetrated to the right angle to the drawing direction of a cast billet at both sides of the mold just below a feed nozzle. CONSTITUTION:By using the mold attached to the static magnetic field generator 28, continuous casting of the billet is executed under the prescribed condition. The static magnetic field generator 28 uses an electromagnet having the prescribed iron core cross section and this is arranged so that the magnetic flux is penetrated just below discharging holes of the feed nozzle 6. Intensity of the static magnetic field is set so that the max. magnetic flux density at center part of the mold 8 comes to the prescribed gauss and twin directional drawing type horizontal continuous casting is executed. By this method, the cast billet can be stably produced without any trouble, such as breakout, at the prescribed casting speed. Further, by adding an electromagnetic stirring device to generate rotating flow to the molten steel stream, the cast billet having further good surface characteristic without double skin and cold shut mark, is obtd. By this method, stability of the casting is improved and the productivity of the cast billet is improved.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式