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1. 发明专利

JP2001246448A METHOD FOR PREPARATION OF WIDTH CHANGE SCHEDULE OF CONTINUOUSLY CAST MATERIAL 失效
公开(公告)号：JP2001246448A
公开(公告)日：2001-09-11
申请号：JP2000057082
申请日：2000-03-02
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI , SUGA SHOJI
IPC分类号： B22D11/05 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a preparation method of the width change schedule for continuously cast member, by which the width of a mold is changed during casting. SOLUTION: In the case plural commands of the width changes based on the planned schedule of the width change interfere with each other, it is judged whether these plural commands of the width changes can be integrated to one command of the width change or not. If it is possible to integrate the change commands into one command, the integration to one command of the width change is performed. If it is impossible, such schedule of the width change so as to perform the shift of any command in the width changes is corrected so as to secure the interval in the width changes between plural commands of the width changes.

2. 发明专利

JPH10263770A METHOD FOR REPAIRING SCARFING OF SLAB 失效
公开(公告)号：JPH10263770A
公开(公告)日：1998-10-06
申请号：JP7532397
申请日：1997-03-27
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI , SEKIGUCHI HIROSHI , SUGISAWA MOTOTATSU
IPC分类号： B22D11/12 , B22D11/16 , B23K7/06
摘要： PROBLEM TO BE SOLVED: To prevent generation of transformation cracks or thermal strain cracks caused by the scarfing, and to prevent the oxide from being left behind even in a case of the special steel high in crack sensitivity in repairing the scarfing of the slab. SOLUTION: In a scarfing repairing method of the slab, the slab surface temperature Ts( deg.C) immediately before repairing the scarfing is in the range to satisfy the inequality Ts( deg.C)>=[Ceq]( deg.C)-150 deg.C, where [Ceq]=[C]+[Si]/24+[Mn]/6+[Ni]/40 +[Cr]/5+[Mo]/4+[V]/14, regarding [Ceq] to be calculated from the composition of the slab, and in addition, the upper limit of Ts( deg.C) is

3. 发明专利

JPH10156505A METHOD FOR OSCILLATING MOLD FOR VERTICAL TYPE CONTINUOUS CASTING 失效
公开(公告)号：JPH10156505A
公开(公告)日：1998-06-16
申请号：JP31338096
申请日：1996-11-25
申请人： KAWASAKI STEEL CO
发明人： ITOYAMA SEIJI , MOCHIDA TETSUO , BESSHO NAGAYASU , KUROKAWA KATSUMI , TOZAWA KOICHI
IPC分类号： B22D11/16
摘要： PROBLEM TO BE SOLVED: To prevent the surface crack in the longitudinal direction on the long side surface at the time of applying a horizontal oscillation casting method. SOLUTION: At the time of executing a vertical oscillation of a mold for a vertical type continuous casting, forming a casting space with two pairs of the casting surfaces and also, a horizontal oscillation of one pair of the molding surface advancing/retreating to the solidified shell in the horizontal direction at the same period as the vertical oscillation period, the product of the number of oscillation and amplitude of the horizontal oscillation is controlled to a critical value or lower decided with cast metal and casting condition. Further, the critical value is desirable to use a value obtd. in pre-experiment.

4. 发明专利

JPH08257699A APPARATUS FOR CASTING METALLIC STRIP 失效
公开(公告)号：JPH08257699A
公开(公告)日：1996-10-08
申请号：JP6280795
申请日：1995-03-22
申请人： KAWASAKI STEEL CO
发明人： TAMURA NOZOMI , KUROKAWA KATSUMI
IPC分类号： B22D11/10 , B22D11/06 , B22D11/106
摘要： PURPOSE: To prevent the rotation together with the air and to produce a rapid cooled strip excellent in the surface characteristic in a rapid cooling method with a roll. CONSTITUTION: A shield plate 16 is arranged through a fine interval between the roll and this plate at the upstream side of the nozzle 1 onto the rapid cooling roll 4 and a combustion device 13 is arranged between the shield plate 16 and paddle. Oxidizing high temp. gas produced in this combustion device 13, e.g. CO2 +O2 , is blasted to form high concn. and high temp. atmosphere. By this method, the development of clogging of the nozzle is eliminated.

5. 发明专利

JPH079095A PRODUCTION OF THIN METAL STRIP 失效
公开(公告)号：JPH079095A
公开(公告)日：1995-01-13
申请号：JP15915293
申请日：1993-06-29
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI , SATO TORU , SHIBUYA KIYOSHI , SUHARA TAKASHI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To obtain a thin strip having a prescribed thickness and to stably manufacture a sound thin strip by obtaining inclining quantity of a pouring nozzle to a cooling roll during pouring molten metal, estimating gap at the position actually injecting molten metal with the inclined nozzle, controlling the gap to a prescribed value and further, correcting the inclination of the pouring nozzle. CONSTITUTION:At the time of producing the thin metal strip by injecting the molten metal on the surface of a cooling single roll 2 rotated at high speed from a slit 7 in the pouring nozzle 1 and rapidly solidifying, in the control of the gap between the pouring nozzle 1 and the cooling single roll 2, two measuring ranges 8, 9 adjoined to the bottom surface being apart from the slit 7 of the pouring nozzle 1, are arranged. Gap (g) between each measured range and the surface of the cooling single roll, is measured in an optical method. Based on the measured result, by obtaining the inclining quantity of the pouring nozzle, the actual gap at the molten metal injecting point is calculated.

6. 发明专利

JPH06190512A PRODUCTION OF METAL STRIP 失效
公开(公告)号：JPH06190512A
公开(公告)日：1994-07-12
申请号：JP34667292
申请日：1992-12-25
申请人： KAWASAKI STEEL CO
发明人： SATO TORU , SUHARA TAKASHI , KUROKAWA KATSUMI , MORIWAKI SABURO , SHIBUYA KIYOSHI , NAKAGAWA KENJI
IPC分类号： B22D11/06
摘要： PURPOSE:To provide a production method for strip, in which a strip detached point on a cooling roll is stabilized and further, the strip can surely be guided to a coiling device side by fixing the advancing direction of the strip after detaching. CONSTITUTION:At the time of detaching the metal strip 4 from the cooling roll 1 and guiding it to the coiling device side by pouring molten metal 3 on the surface of the cooling roll 1 rotating at high speed and rapidly cooling and solidifying it the metal strip 4 is detached from the cooling roll by blowing compressed gas toward the cooling roll 1. Successively, the tip part of the detached strip 4 is guided by laying to the edge tip 7 of a detaching edge 6 arranged near the surface of the cooling roll 1 at the neighborhood of the detaching point.

7. 发明专利

JP2002178117A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2002178117A
公开(公告)日：2002-06-25
申请号：JP2000387609
申请日：2000-12-20
申请人： KAWASAKI STEEL CO
发明人： KITANO YOSHIHISA , KUROKAWA KATSUMI , KIRITANI ATSUSHI , TADAMA TOMOAKI , SUGA SHOJI , TAWARA EIJI , FUJIOKA TERUHIKO
IPC分类号： B22D11/16 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method by which the final solidified position of a strand during continuously casting can quickly and precisely be estimate to make the position close to the end position in a continuous caster to the utmost. SOLUTION: A vertically calculated cross sectional plane in the casting direction is generated at every progressing of the casting having a prescribed length in the strand during continuously casting. When the calculated plane passes through plural zones successively set in the casting direction, and arrives at the boundary at the next zone, a two-dimensional solidifying calculation in the calculated plane is performed based on an average cooling condition in a zone where this calculated zone passed through just ahead. The obtained temperature distribution in the calculated plane is given as an initial value in the above solidifying calculation performed in on and after the next zone, and the solidifying calculation in the calculated plane, is performed in order, and the temperature distribution in the calculated plane in the boundary at the inlet side of the last zone, is obtained, and in the case the calculated plane in the boundary is wholly not more than a solidus temperature, a casting speed is accelerated. In the reverse case, when the calculated plane arrived at this boundary, the solidifying calculation of the calculated plane is performed by using the cooling condition in the last zone to estimate the final solidifying position, thereby controlling to make the position close to the end part E of the caster.

8. 发明专利

JPH11320062A METHOD FOR CONTROLLING WEIGHT OF CAST SLAB 失效
公开(公告)号：JPH11320062A
公开(公告)日：1999-11-24
申请号：JP12783498
申请日：1998-05-11
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI
IPC分类号： B22D11/16
摘要： PROBLEM TO BE SOLVED: To more correctly guess the actual weight of a cast slab to an instructed weight thereof, to minimize the deviation of the cast slab weight and to improve the yield by correcting the length of the cast slab in each kind of steel to a specific length and cutting off with an instructed cutting-off length. SOLUTION: The cast slab length LO in each kind of steel is corrected as LO=W/(ρ+t+w) and the cast slab is cut off with the instructed cutting-off length L as L=LO×(t/T). Wherein, W is the instructed weight of the cast slab (t), ρ is the sp. gr. (t/mm ), (w) is the instructed width of the cast slab (m), (t) is the nominal thickness of the cast slab (mm), T is the thickness of the cast slab in each kinds of steel (mm). The weight deviation developed peculiar to each kind of steel can be reduced by executing this correction. The cutting-off length is calculated by replacing the instructed thickness of the cast slab with the actual thickness of the cast slab in each kind of steel. Molten steel 15 is cast into a mold 10 from a tundish 11 and the drawn-out continuously cast slab 2 is cooled with cooling water and solidified. The cast slab is straightened with a straightening device 5 and cut off into a desired length of the cast slab with a cutting device 4.

9. 发明专利

JPH10267916A ON-LINE SPACE FACTOR MEASUREMENT METHOD FOR RAPID METAL THIN BAND 失效
公开(公告)号：JPH10267916A
公开(公告)日：1998-10-09
申请号：JP7559897
申请日：1997-03-27
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI
IPC分类号： G01N33/20
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring space factor wherein quality evaluation is made on line with ease for a rapid cooling metal thin band manufactured by jetting a molten metal on the outside periphery of a cooling roller being rotated at high speed, for rapid solidification. SOLUTION: A molten metal is supplied from a nozzle 3 to the surface of a cooling roller 4 being rotated at high speed, to be rapidly solidified, thus a rapid cooling metal thin band S is manufactured. While the rapid cooling metal thin band S is wound in spiral, the coil's weight, inside diameter, and outside diameter are measured during winding or after completion, and a space factor is calculated based on the measured value. Thus, a space factor is evaluated with ease.

10. 发明专利

JPH09136146A MEANDERING PREVENTING METHOD FOR THIN METAL STRIP 失效
公开(公告)号：JPH09136146A
公开(公告)日：1997-05-27
申请号：JP29298295
申请日：1995-11-10
申请人： KAWASAKI STEEL CO
发明人： KUROKAWA KATSUMI , KANAMARU TOMOHARU , KATO KAZUYUKI , ISHIZUKA HARUHIKO , SATO TORU , SUHARA TAKASHI , MATSUKAWA TOSHITANE
IPC分类号： B65H23/032 , B21C47/34 , B22D11/06 , B22D11/12
摘要： PROBLEM TO BE SOLVED: To reduce the occurrence of meandering on a coiling reel and to stably produce a thin metal strip by respectively regulating dynamic friction forces generating between the thin metal strip and a belt of a transferring conveyer. SOLUTION: A molten metal 17 is jetted on the external circumference face of a cooling roll 3 rotating at a high speed, cooled rapidly and solidified to produce the thin metal strip 15, then the thin metal strip 15 is stripped from the cooling roll 3, sucked and transferred by plural conveyers to a coiling device and wound into a coil shape. At this time, two conveyers among plural conveyers are used for individually driving transferring conveyers, and the longitudinal direction center axes of an upstream side transferring conveyer and a downstream side transferring conveyer are arranged to be mutually reverse with the transferring line and inclined in the horizontal plane. The meandering amount detected by edge sensors 13, 14 is inputted to a suction controller through the meandering detecting device, the suction forces inside vacuum suction boxes 8-1, 8-2 attached to transferring vacuum suction type conveyers 7-1, 7-2 are changed into mutually different values by a blower and the dynamic friction force is regulated and the correcting force is applied.

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