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21. 发明专利

JP2009119514A Continuous casting method for slab 有权
标题翻译：连续铸造SLAB的方法
公开(公告)号：JP2009119514A
公开(公告)日：2009-06-04
申请号：JP2007298483
申请日：2007-11-16
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： OKADA NOBUHIRO , TAKATANI KOJI , KAWAMOTO MASAYUKI
IPC分类号： B22D11/115 , B22D11/04
摘要： PROBLEM TO BE SOLVED: To prevent the over-acceleration of a molten steel flow at the position of a discharge hole in an immersion nozzle.
SOLUTION: Disclosed is a method where electromagnetic force is acted on a molten steel 2 in a mold by an electromagnetic coil installed in the range in the vertical direction including the discharge hole 1a of an immersion nozzle 1 from a meniscus, and, while performing electromagnetic stirring, a slab is continuously cast. In the horizontal cross-section at the position of the discharge hole 1a, in such a manner that the electromagnetic force in the direction along the short side 3a of the mold in the region from 50 mm to 90 mm to the direction along the center of the long side of the mold from the short side 3a of the mold is controlled to the one in the direction along the long side 3b of the mold or above, the electromagnetic stirring is performed. In this way, a uniform circulation flow along the mold can be formed even in the meniscus position without over-accelerating the molten steel flow at the position of the discharge hole in the electromagnetic stirring, thus the generation of breakout can be reduced.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止在浸入式喷嘴中的排出孔的位置处的钢水流过度加速。解决方案：公开了一种电磁力通过安装在垂直方向上的电磁线圈作用在模具中的钢水2上，该电磁线圈包括来自弯液面的浸入式喷嘴1的排出孔1a，在进行电磁搅拌的同时，连续铸造板坯。在排出孔1a的位置处的水平横截面中，使得沿着模具的短边3a的方向的电磁力在从50mm到90mm的区域到沿着中心的方向从模具的短边3a的模具的长边被控制在沿着模具的长边3b或以上的方向的一侧，进行电磁搅拌。以这种方式，即使在弯液面位置也可以形成均匀的沿着模具的循环流动，而不会使电磁搅拌中的排出孔位置处的钢水流过度加速，从而可以减少突破的产生。版权所有（C）2009，JPO＆INPIT

22. 发明专利

JP2000061599A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2000061599A
公开(公告)日：2000-02-29
申请号：JP23974198
申请日：1998-08-26
申请人： SUMITOMO METAL IND
发明人： TAKATANI KOJI
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/115 , B22D11/116 , B22D27/02
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method of molten metal, with which a cast slab excellent in the surface quality and the inner quality can be obtd. SOLUTION: In the continuous casting method of molten metal, the molten metal is circularly fluidized in the horizontal direction by giving the molten metal near the meniscus in a mold the electro-magnetic force with an electro- magnetic stirring device 7, and the electro-magnetic force is given to spouting flow 6a from an immersion nozzle 1 dipped into the molten metal in the mold with the electro-magnetic stirring devices 8a, 8b to fluidize the spouted flow 6a of the molten metal upward. The direction of the electro-magnetic force acting on the molten metal near the meniscus in the mold can be the same direction at the faced positions in two long sides of the mold.

23. 发明专利

JPH1190310A CONTROL OF COATING FILM THICKNESS OF ROLL COATER 失效
公开(公告)号：JPH1190310A
公开(公告)日：1999-04-06
申请号：JP25448297
申请日：1997-09-19
申请人： SUMITOMO METAL STEEL PROD , SUMITOMO METAL IND
发明人： MATSUMORI YASUO , SAKAMOTO YOSHIYASU , OTANI SHIGEAKI , TAKATANI KOJI , HAMAOGI KENJI
IPC分类号： B05D1/28 , B05C1/08 , B05C11/02 , B05C11/10 , B05D3/00
摘要： PROBLEM TO BE SOLVED: To improve initial setting and coating film thickness accuracy by using a pushing depth servo controller which drives a pickup roll servo motor so as to eliminate the deviation between the set value of a pushing depth and the detected value of a pickup roll position detector. SOLUTION: The distance between an applicator roll 3 and a backup roll 4 driven by an applicator roll servo motor 14 is detected by an applicator roll position detector 18. The load between the applicator roll 3 and the backup roll 4 is detected by an applicator roll load cell 16. The distance between the pickup roll 2 and the applicator roll 3 driven by a pickup roll servo motor 15 is detected by a pickup roll position detector 19. The load between the pickup roll 2 and the applicator roll 3 is detected by a pickup roll load cell 17. A pushing depth servo controller 20 derives the pickup roll servo motor 15 in such a manner that the deviation between the set value of the pushing depth and the detected value of the pickup roll position detector 19 is made zero.

24. 发明专利

JPH10272412A SETTING METHOD OF COATING CONDITION OF ROLL COATER 失效
公开(公告)号：JPH10272412A
公开(公告)日：1998-10-13
申请号：JP7988597
申请日：1997-03-31
申请人： SUMITOMO METAL IND
发明人： HAMAOGI KENJI , TAKATANI KOJI
IPC分类号： B05D1/28 , B05C1/08
摘要： PROBLEM TO BE SOLVED: To minimize influence of a setting error of an initial roller reference point by making a ratio of a variation of thickness of a coating film against a variation of a pressing quantity between an applicator roller and a pick-up roller smaller than a specific value. SOLUTION: In a roll coater, the thickness of a coating film formed on a belt-like body 5 by coating is decided by viscosity of the coating film, a carrier speed of the belt-like body 5, a circumferential speed ratio between an applicator roller 3 and a pick-up roller 2 against the carrier speed, thickness of an elastic material and the elastic modulus on the applicator roller 3 and a pressing quantity between the rollers 2, 3 etc. A sensitivity Δt/Δδof a variation Δt (μm) of the thickness of the coating film against a variation Δδ (mm) of the pressing quantity between the rollers 2, 3 is made smaller than 20 μm/mm. By coating within this region, deviation of the thickness of the coating film due to the initial setting error indispensably contained in the pressing quantity between the roller 2, 3 and the setting error of the pressing quantity, can be restrained.

25. 发明专利

JPH10166120A METHOD FOR CONTINUOUSLY CASTINGMOLTEN METAL 失效
公开(公告)号：JPH10166120A
公开(公告)日：1998-06-23
申请号：JP32646596
申请日：1996-12-06
申请人： SUMITOMO METAL IND
发明人： TAKATANI KOJI , HIGUCHI YOKO
IPC分类号： B22D11/10 , B22D11/115
摘要： PROBLEM TO BE SOLVED: To obtain a cast slab having good surface cleanliness without surface crack by giving the driving force in the direction crossed at the right angle to the casting direction to molten metal near a meniscus at two long side surfaces of a mold with electromagnetic stirring. SOLUTION: An immersion nozzle 1 having two spouting holes 2 at 5-30 deg. upward direction of spouting angle θ is used. The molten metal is spouted toward short sides 3 of the mold from two spouting holes 2. The driving force is given in the direction crossed at the right angle to the casting direction of the molten metal near the meniscus M on the surfaces of two long sides 4 of the mold with the electromagnetic stirring devices 5-1, 5-2. The driving forces are ones at different directions or at the same directions to the faced positions of two long sides. In such a way, the temp. of the molten metal near the meniscus is kept to high and also, uniform flow of the molten metal having the direction crossed at the right angle to the casting direction. By this method, the optimum stirring condition can be selected according to the casting speed.

26. 发明专利

JPH07132267A WASHING METHOD FOR COATING APPLYING HEAD HAVING SLIT NOZZLE 失效
公开(公告)号：JPH07132267A
公开(公告)日：1995-05-23
申请号：JP30344293
申请日：1993-11-09
申请人： SUMITOMO METAL IND , MITSUBISHI HEAVY IND LTD
发明人： TAKATANI KOJI , TANIGUCHI NOBUYUKI , ITANO SHIGEO
IPC分类号： B05D1/26 , B05C5/02
摘要： PURPOSE:To establish the means for easily and efficiently washing the inside of the 'coating applying head having a slit nozzle', such as extrusion type coating applying head. CONSTITUTION:A washing liquid is supplied from a coating liquid supplying pipe 4 connecting to the coating applying head 1 and an inert gas is blown into the washing liquid passing this coating liquid supplying pipe 4 at the time of washing the inside of the 'coating applying head 1 of a type to execute coating application while discharging the coating liquid from the slit nozzle'. The inside of the coating applying head is washed by discharging the liquid mixture composed of the washing liquid and the inert gas from the slit nozzle 6.

27. 发明专利

JPH06210238A COATING METHOD USING ROLL COATER 失效
公开(公告)号：JPH06210238A
公开(公告)日：1994-08-02
申请号：JP2061893
申请日：1993-01-13
申请人： SUMITOMO METAL IND
发明人： HAMAOGI KENJI , TAKATANI KOJI
IPC分类号： B05C1/08 , B05C11/00 , B05D1/28 , B05D3/00
摘要： PURPOSE:To provide a means capable of stably forming a coating film with uniform thickness in the lateral direction thereof using a roll coater. CONSTITUTION:A roll coater of a mode capable of independently controlling the pressures between a pickup roll 1 and an applicator roll 2, between a backup roll 3 and the applicator roll 2 and between a separately provided coating adhering amt. control roll (metering roll, doctor roll) and the roll in contact therewith at both end parts of roll shafts is used. The interval of the roll meshes generated in the coating film formed on the applicator roll 2 or a strip like material 6 to be coated is measured on-line by a range finder 8. According to the difference between the intervals of roll meshes in the vicinity of both and parts of rolls, the pressures between rolls are independently adjusted at both end parts of the roll shafts.

28. 发明专利

JPH04118160A METHOD FOR CONTINUOUSLY CASTING STEEL AND DEVICE FOR IMPRESSING STATIC MAGNETIC FIELD THEREOF 失效
公开(公告)号：JPH04118160A
公开(公告)日：1992-04-20
申请号：JP23362990
申请日：1990-09-04
申请人： SUMITOMO METAL IND
发明人： NAKAJIMA HIDEMASA , WATABE TADAO , TANIZAWA YOSHINORI , TAKATANI KOJI
IPC分类号： B22D11/10 , B22D11/115
摘要： PURPOSE:To reduce surface flaw and to improve the quality of a cast slab by setting a static magnetic field impressing device in a mold, making the specific value or lower of magnetic flux density on molten steel surface in a mold and further, making the specific value or lower of the max. magnetic flux density at unsolidified part of molten steel in a strand in the mold or just below the mold. CONSTITUTION:To the cast slab in the mold 1 and/or at neighborhood of just below the mold, static magnetic field 8 is impressed with a static magnetic impressing device 3 and continuous casting is executed. The above static magnetic field impressing device is set to the mold and the magnetic flux density on the molten surface in the mold, i.e., at the meniscus, is made to =0.16T. At the time of using the static magnetic field impressing device 3, by non-magnetic body 10, in which the magnetic flux is difficult to pass through, the magnetic flux density near this is reduced and the magnetic flux density at the meniscus and the max. magnetic density can be set to =0.16T, respectively. By this method, while drastically reducing the surface flow of longitudinal crack, pinhole, etc., the inclusion is reduced and the quality of cast slab can be improved.

29. 发明专利

JPH03118949A METHOD AND APPARATUS FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH03118949A
公开(公告)日：1991-05-21
申请号：JP25817889
申请日：1989-10-02
申请人： SUMITOMO METAL IND
发明人： TAKATANI KOJI
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/18
摘要： PURPOSE:To control flow of molten steel in a mold, to improve cleaning effect of the molten steel at meniscus part and to produce a continuously cast slab having sound material by setting two pairs of magnets having the same polarity and two pairs of magnets having the different polarities on both faces at long wall sides of a mold at the time of continuously casting the molten steel. CONSTITUTION:The molten steel is poured into the water cooling type continuously casting mold 3 having rectangular cross sectional shape from a submerged nozzle 1, and solidified shell 4 in the molten steel is formed on inner wall of the mold and pulled out from the mold 3 as the continuously cast slab. In this case, two pairs of the magnets 21 having the same polarity are set as facing at upper side faces of the long walls 3a, 3b in the rectangular mold 3 and two pairs of the magnets 22 having the different polarities are set as facing at the lower part thereof. By controlling fluidity of the molten steel in the mold by magnetic field with the electro-magnets 21, impurity is floated up and separated and breakout in the continuously cast slab caused by remelting of the solidified shell 4 is prevented, and by accelerating flow of the molten steel near the meniscus part by shifting magnet field with the electro- magnets 22, the cleaning effect of molten steel is improved and the continuously cast slab having excellent quality is stably produced.

30. 发明专利

JPS63230808A METHOD FOR CHARGING RAW MATERIAL IN BLAST FURNACE 失效
公开(公告)号：JPS63230808A
公开(公告)日：1988-09-27
申请号：JP6544987
申请日：1987-03-19
申请人： SUMITOMO METAL IND
发明人： KURITA KOICHI , TAKATANI KOJI
IPC分类号： C21B5/00
摘要： PURPOSE:To improve the efficiency of blast furnace operation by controlling the ratio of permeable resistances of iron ore and coke to the specific range at the time of supplying alternately the ore and the coke as layer-state. CONSTITUTION:The ore and coke are alternately supplied in the blast furnace as the layer-state. Then, the ratio of the permeable resistance of the iron ore charged in the furnace wall side of the blast furnace and the permeable resistance of the coke layer charged in the upper face and the lower face of the iron ore layer, is controlled so as to become the range of 10-45. For example, charging of the iron ore classified into grain sizes, etc., is executed. By this method, inactive zone in the blast furnace can be controlled and the utilizing efficiency in the blast furnace can be improved.

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