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1. 发明专利

JP2005125337A Immersion nozzle for thin cast slab continuous casting equipment and casting method 有权
标题翻译：薄壁连铸连铸设备注浆喷嘴
公开(公告)号：JP2005125337A
公开(公告)日：2005-05-19
申请号：JP2003360759
申请日：2003-10-21
申请人： Nippon Steel Corp , Posco , ポスコ , 新日本製鐵株式会社
发明人： HOJO MASATAKE , KOBAYASHI HIDEAKI , ISAKI HIROSHI , NAKAHO MASATERU , CHON HYUNTAE , CHON HANNAMU , LEE CHORUGYU , KIM WANSUE
IPC分类号： B22D11/06 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To form a solidified shell having a uniform thickness by stabilizing a flow of molten metal discharged from an immersion nozzle under a favorable condition, and to prevent segregation of element and mixing of scum, in continuous casting of a thin cast slab by use of a moving mold such as a twin drum or a twin belt.
SOLUTION: In an equipment to continuously cast molten metal supplied to a molten metal well 3 via an immersion nozzle 6 into a thin cast slab, a number of discharge holes 10a and 10b in the immersion nozzle 6 are provided on a side facing a cooling drum 1, and directions of the discharge holes are tilted toward both left and right sides oppositely from the width center of the immersion nozzle 6 as a boundary. As a result, the flow of the molten metal discharged from the discharge holes 10a and 10b collides tiltedly against the solidified shell, which prevents remelting of the shell. Further, the flow of the molten metal proceeds to both left and right side banks 2 from the width center of the immersion nozzle 6 as a boundary, which prevents mixing of the scum floating on the molten metal well 3 into the cast slab.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了通过在有利条件下稳定从浸渍喷嘴排出的熔融金属的流动来形成具有均匀厚度的凝固壳体，并且为了防止元件的分离和浮渣的混合，在连续铸造中薄板坯通过使用诸如双筒或双带的移动模具。解决方案：在将通过浸没喷嘴6供给到熔融金属井3的熔融金属连续铸造成薄铸坯的设备中，浸没喷嘴6中的排出孔10a和10b设置在面向冷却滚筒1，并且排出孔的方向作为边界从与浸入式喷嘴6的宽度中心相反的左右两侧倾斜。结果，从排出孔10a和10b排出的熔融金属的流动相对于凝固的壳体倾斜地冲击，这防止了壳体的再熔化。此外，熔融金属的流动作为边界从浸入式喷嘴6的宽度中心前进到左侧和右侧的两个堤岸2，从而防止浮在熔融金属井3上的浮渣混入铸造板坯中。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005305488A Side weir of twin-drum continuous casting machine, method for forming oxide film on surface of side weir refractory, and casting method 审中-公开
$Side weir of twin-drum continuous casting machine, method for forming oxide film on surface of side weir refractory, and casting method$
标题翻译：双面连续铸造机的侧面磨边，侧面抗冲击表面形成氧化膜的方法和铸造方法
公开(公告)号：JP2005305488A
公开(公告)日：2005-11-04
申请号：JP2004124180
申请日：2004-04-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKEUCHI TOMOHIDE , INOUE SHUICHI , NAKAHO MASATERU , ISAKI HIROSHI , IZU TADAHIRO , KOBAYASHI HIDEAKI
IPC分类号： B22D11/06 , C04B41/87 , C23C30/00
摘要： PROBLEM TO BE SOLVED: To provide a side weir which restrains the growth of a linear groove, a method for forming an oxide film on the surface of the refractory of the side weir, and a casting method using the side weir so that the sealing of molten steel can be performed stably for a long time.
SOLUTION: The side weir of a metal strip casting machine is placed on both end faces of a pair of rotary cooling drums and forms a moving mold between the side weir and the pair of the cooling drums. The oxide film is formed on the surface of the refractory at least at the area of the side weir touching the cooling drums.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种限制线性槽生长的侧堰，在侧堰的耐火材料的表面上形成氧化膜的方法和使用侧堰的铸造方法，使得可以长时间稳定地进行钢水的密封。
解决方案：金属带铸造机的侧堰放置在一对旋转冷却鼓的两个端面上，并在侧堰和一对冷却鼓之间形成移动的模具。至少在侧面堰接触冷却鼓的区域，氧化膜形成在耐火材料的表面上。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2004195471A Tundish for continuous casting 审中-公开
公开(公告)号：JP2004195471A
公开(公告)日：2004-07-15
申请号：JP2002363536
申请日：2002-12-16
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KIRIHARA TADASHI , NAKAHO MASATERU
IPC分类号： B22D11/10
摘要： PROBLEM TO BE SOLVED: To prevent the deterioration of quality of a cast slab caused by foreign matters mixed in molten steel and the clogging of a nozzle caused by low temperature of the molten steel poured into a tundish at the initial stage of casting, in a continuous casting.
SOLUTION: A refractory-made weir 2, divided into a molten steel receiving part 3 and a casting part 4, is arranged in the tundish 1, and a molten steel passage 5 is arranged at the lower end part of the weir 2 and a metal plate 6 is closely arranged at the molten steel receiving part 3 side of the molten steel passage 5, and a refractory wool 7 is arranged by coating on the outer side surface of the metal plate 6. Since the metal plate 6 is covered with the refractory wool 7, this metal plate is not melted with a burner flame during preheating the tundish. As result, the deterioration of quality of the cast slab caused by the foreign matters mixed in the molten steel and the clogging of the nozzle caused by the low temperature of the molten steel, at the initial stage of casting, can be prevented.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JPH10306311A IMMERSION TUBE 失效
公开(公告)号：JPH10306311A
公开(公告)日：1998-11-17
申请号：JP11138897
申请日：1997-04-28
申请人： NIPPON STEEL CORP
发明人： TERAJIMA HIDETOSHI , MATSUI TAIJIRO , NAKAHO MASATERU
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide an immersion tube which restrains nitrogen pick-up in RH, DH, etc., constituting a secondary refining equipment and also, improves the durability of a refractory. SOLUTION: On the outer periphery of a core metal 1 of the immersion tube, an annular or spiral flat plate 2 or further, a flat plate formed into L- shape at the tip part and a flat plate fitting studs and a flat plate having a cavity for flowing coolant at the tip part and further, a flat plate having a gas jetting hole for shutting off or delaying the air flow by flowing inert gas, etc., are arranged. The fall-off and the development of crack of castable refractory are restrained and the high durability and the high productivity thereof are obtd.

5. 发明专利

JPH09122583A METHOD FOR COATING STEEL SHEET WITH LIQUID AND SLURRY 失效
公开(公告)号：JPH09122583A
公开(公告)日：1997-05-13
申请号：JP28872395
申请日：1995-11-07
申请人： NIPPON STEEL CORP
发明人： NAKAHO MASATERU , KIMURA TAKESHI
IPC分类号： B05D1/28 , B05D3/12 , B05D7/14 , C21D8/12
摘要： PROBLEM TO BE SOLVED: To prepare a good and homogeneous coating film by coating the surface of a steel sheet with liq. or slurry or especially by applying an MgO slurry in the decarburization-annealing of an oriented silicon steel sheet in a desired amt. and making the coating amt. uniform. SOLUTION: When an MgO slurry is applied in the decarburization-annealing of an oriented silicon steel sheet, a roll coater 3 is used to primarily adjusting the coating thickness, the local coating distribution in the width direction caused at the roll coater part is eliminated with an air wiper 5, and periodical nonuniform coatings in the sheet traveling direction due to the change of the distance between the wiper 5 and the vibrated sheet are eliminated by setting an auxiliary wiper 6 behind the air wiper 5.

6. 发明专利

JP2001141203A BURNER STRUCTURE AND METHOD FOR FIXING BURNER 失效
公开(公告)号：JP2001141203A
公开(公告)日：2001-05-25
申请号：JP31983899
申请日：1999-11-10
申请人： NIPPON STEEL CORP
发明人： NAKAHO MASATERU , KATSUISHI HIROYOSHI , MATSUO SABURO
IPC分类号： C21D1/52 , F23C5/02 , F23M5/02 , F27B3/20
摘要： PROBLEM TO BE SOLVED: To provide a burner structure and a method for fixing a burner in which flame is prevented to spread to the rear by eliminating a gap generated as ceramic fibers expand or contract and a lining is protected against damage at the time of replacement. SOLUTION: A plurality of blocks 17, produced by compression molding a blanket 21 of ceramics fibers, are fixed to the outer circumference of a burner tile 16 provided at the forward end of a burner body 15 thus obtaining a burner structure 10. The burner body 15 fixed with a plurality of blocks 17 is moved in the horizontal direction while being held by suspenders 32, 33 attached to a frame 31 disposed on the outside of the furnace wall 11 and fixed to a burner hole 14 in the furnace wall 11.

7. 发明专利

JP2000327403A REFRACTORY FOR BOTTOM BLOWING TUYERE OF STEEL MAKING CONVERTER 失效
公开(公告)号：JP2000327403A
公开(公告)日：2000-11-28
申请号：JP14212699
申请日：1999-05-21
申请人： NIPPON STEEL CORP , KUROSAKI HARIMA CORP
发明人： SAITO YOSHITOSHI , KONO KOJI , SAKAMOTO HIROSHI , INUZUKA TAKAYUKI , NAKAMURA HISASHI , KASAHARA HAJIME , NAKAHO MASATERU , MATSUI TAKESHI , SURUGA TOSHIHIRO
IPC分类号： C04B35/043 , C21C5/48
摘要： PROBLEM TO BE SOLVED: To obtain refractory having dense structure in the whole temp. region of the use environment and high in strength and excellent in slag erosion resistance by forming a blended material containing resin coated magnesia particles, magnesia particles and carbon. SOLUTION: It is preferable that the magnesia particle is added at need to improve the strength and the content is desirably 20-75 wt.%. The content of the carbon is 3-40 wt.%, to which 0.5-10 wt.% metal and 0.2-5 wt.% compound containing boron per carbon are preferably added. As the resin to be applied, novolak and a resol type phenolic resin are used and the resin is applied by kneading the magnesia particle with the resin to be applied. The size of the magnesia particle of the resin coated magnesia particle is 1-10 mm, the quantity of the fixed carbon in the resin to be applied is 15-50 wt.% and the quantity of the resin is preferably 0.5-2 wt.% per 100 pts.wt. magnesia particle. The change of strength and elastic modulus in the environment, where rapid heating- quenching is repeated, is remarkably reduced.

8. 发明专利

JPH11322407A REFRACTORY BLOCK AND ITS PRODUCTION 失效
公开(公告)号：JPH11322407A
公开(公告)日：1999-11-24
申请号：JP15527298
申请日：1998-05-19
申请人： NIPPON STEEL CORP
发明人： MATSUI TAIJIRO , NAKAHO MASATERU
IPC分类号： B22D41/02 , C04B35/00 , C04B35/043 , C21C7/00
摘要： PROBLEM TO BE SOLVED: To obtain refractories which have excellent corrosion resistance and spalling property in combination, may be easily applied in a short period of time and allows an improvement in the working rate of a vessel and the reduction of a fire resistance cost by incorporating a specific ratio of refractory brick aggregate of the size in a specific range into the refractories and constituting the balance of monolithic refractories. SOLUTION: A refractory block A comprises the refractory brick aggregate 1 and the monolithic refractories 2 and is formed by compounding 20 to 45 wt.% monolithic refractories 2 with 55 to 80 wt.% refractory brick aggregate 1. The refractory brick aggregate 1 is formed by using refractory bricks or refractory brick scrap and previously regulating the size thereof to 30 to 100 mm. The refractory block A is produced by previously charging, for example, 55 to 80 wt.% MgO-C brick scrap into a form, removing the internal gases from a degassing hole disposed on the upper frame of the form while packing the monolithic refractories 2, which are essentially composed of MgO and carbon black and are formed by kneading these components, into the form from its lower part to enhance denseness, then solidifying the entire part.

9. 发明专利

JPH10288467A HEAT-RESISTANT COVERING MATERIAL FOR COVERING SURFACE OF HEAT-RESISTANT LAYER AND CONSTRUCTION METHOD FOR HEAT-RESISTANT WALL USING THE SAME 失效
公开(公告)号：JPH10288467A
公开(公告)日：1998-10-27
申请号：JP11424597
申请日：1997-04-15
申请人： NIPPON STEEL CORP
发明人： NAKAHO MASATERU , MATSUO SABURO , KATSUISHI HIROYOSHI
IPC分类号： F27D1/00
摘要： PROBLEM TO BE SOLVED: To prevent separation and falling-off of heat-resistant cloth and also to enhance an effect of heat resistance by forming a heat-resistant covering material by wrapping a blanket core material constituted of ceramic fibers in a heat-resistant cloth sheet. SOLUTION: A heat-resistant covering material 10 covering the surface of a heat-resistant layer is formed by wrapping a blanket core material 11 constituted of ceramic fibers in a heat-resistant cloth sheet 12. The blanket core material 11 is shaped like a square plate of 3-7 m, for instance, and has a thickness of 25 mm. The heat-resistant cloth sheet 12 is sewn with thread of ceramic fibers so that it may cover the blanket core material 11 like a cushion cover, and it is fitted firmly to the blanket core material 11 with an adhesive. On the occasion, alumina cloth is used for the heat-resistant cloth sheet 12 and an adhesive of alumina-silica series is used the adhesive. According to this constitution, separation, falling-off and breakup of the heat-resistant cloth due to loosening between ceramic fiber blocks can be prevented surely.

10. 发明专利

JP2000271707A TUNDISH FOR PLASMA-HEATING MOLTEN STEEL 失效
公开(公告)号：JP2000271707A
公开(公告)日：2000-10-03
申请号：JP8536199
申请日：1999-03-29
申请人： NIPPON STEEL CORP
发明人： IMAGAWA HIROSHI , MATSUI TAIJIRO , NAKAHO MASATERU , FUKUNAGA SHINICHI , TERAJIMA HIDETOSHI
IPC分类号： B22D11/10 , B22D41/00 , B22D41/015
摘要： PROBLEM TO BE SOLVED: To provide a tundish for plasma-heating molten steel, in which the erosion of corner parts in a refractory forming a heating space part and the fall-out caused by spalling thereof, are restrained and the deformation of an iron shell in a tundish cover and the red heating of the iron shell are prevented and the stable flame of a plasma torch can be formed by holding the flame temp. of the plasma torch high. SOLUTION: Relating to the tundish for plasma-heating the molten steel, in which the tundish vessel lined with the refractory in the inside of the iron shell, the cover 23 for tundish vessel lined with the refractory 26 in the inside and the plasma torch 21 fitted to a plasma torch inserting hole 22 formed in the cover 23, are included and the heating space part 20 for conducting the heat into the molten steel in the inner part of the cover by radiating the heat from the plasma torch 21 to the surroundings of the plasma torch 21 is formed, a gas penetrating hole 29 for blowing inert gas through the refractory 26 surrounding the space part, is arranged in the heating space part 20.

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