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1. 发明专利

JP2000317583A CASTING CONTROL METHOD IN BILLET CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JP2000317583A
公开(公告)日：2000-11-21
申请号：JP12721799
申请日：1999-05-07
申请人： NIPPON STEEL CORP
发明人： IWAMI YUKIHIRO , NAKADA MASAHIRO , DEGUCHI TOKUAKI
IPC分类号： B22D11/00 , B22D11/10 , B22D11/16 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To obtain a control technique for distributing cast slabs suitably conforming to the product standard to obtain the min. quantity of the cast slabs having out of the product standard and the max. yield at the completing time of the casting, in a billet continuous caster having multi-strands. SOLUTION: In the multi-strand system billet continuous casting equipment, the decision of the whole casting length from the starting to the completing of the casting in each strand is executed as the following calculations. A definite casting length is calculated by accumulating the standard length of the products from the cutting completing position of the cast slab in each strand to the nearest time of the molten steel surface in a mold. Successively, the molten steel quantity in a tundish is distributed into each strand as the multiple numbers of the standard length of the product and calculated by adding to the definite casting length. The distribution into each strand is executed by adding the standard length of the product in order from the preceding strand at the point of calculating time until the remaining molten steel quantity in the tundish becomes zero. Then, in the case of stopping the casting at out of the schedule or at the completing time of the casting, the definite casting length and the distribution are recalculated.

2. 发明专利

JPH1180894A CONTINUOUS CASTING MATERIAL FOR BILLET, AND ITS PRODUCTION 失效
公开(公告)号：JPH1180894A
公开(公告)日：1999-03-26
申请号：JP23590097
申请日：1997-09-01
申请人： NIPPON STEEL CORP
发明人： NAKADA MASAHIRO , IDEMOTO YOJI , TAKAHASHI HIROMI
IPC分类号： B22D11/00 , B22D11/10 , B22D11/108 , C21C7/00 , C21C7/04 , C21C7/06 , C22C38/00 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To stably perform casting even by the use of a continuous billet caster particularly for a cast billet of small cross section by providing a specific composition consisting of C, Si, Mn, Ca, T.Al, and the balance essentially Fe. SOLUTION: This casting material has a composition containing, by weight, =0.0003% Ca, and

3. 发明专利

JPH08229643A MOLTEN METAL CLEANING METHOD TO REMOVE AIR BUBBLE AND INCLUSION AND DEVICE THEREFOR 失效
公开(公告)号：JPH08229643A
公开(公告)日：1996-09-10
申请号：JP3638095
申请日：1995-02-24
申请人： NIPPON STEEL CORP
发明人： UCHIMURA MITSUO , SUGIMARU SATOSHI , NAKADA MASAHIRO
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D43/00 , C21C7/072
摘要： PURPOSE: To prevent air bubble from intruding into a mold by blowing in inert gas from the inner wall of cylinder arranged between an immersion nozzle and tundish and reducing the speed of molten metal passing through a cylinder slower than of elevating speed of bubble. CONSTITUTION: A cylinder 12 is arranged between a tundish 9 and mold 10. Inert gas 8 is blown in molten metal from a porous plug 1 arranged in the inner wall of a cylinder 12. The flow rate is controlled by operating a stopper 11, etc., so that the following inequalities are satisfied. 0.6>(t/(ρ.S)). 0.6>(t/(ρ.π.(R - ρ (). S; cross section area (m ), t; passing molten metal quantity (t/s), ρ; density of molten metal (t/m ), R; inner diameter of cylinder to which gas is blown in (m), r; radius of stopper (m) π; ratio of circumference of circle to its diameter. By this method, generation of nozzle clogging is reduced.

4. 发明专利

JP2007237290A Method for setting cooling facility 有权
标题翻译：设置冷却设备的方法
公开(公告)号：JP2007237290A
公开(公告)日：2007-09-20
申请号：JP2006067497
申请日：2006-03-13
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAKAJIMA TAKAO , TOKI MASAHIRO , OTANI YASUHIKO , KUROKI MASATSUGU , KONDO TAKASHI , NAKADA MASAHIRO , KINOSHITA JUNICHI
IPC分类号： B22D11/124
摘要： PROBLEM TO BE SOLVED: To provide a method for precisely setting a secondary cooling facility etc., in a continuous casting for short time at the construction-site, when the secondary cooling facility etc., in a continuous casting, is set.
SOLUTION: In a method for setting the cooling facility having the plurality of lined nozzle groups in the horizontal direction and the vertical direction to the nozzle which spouts two fluids of gas and liquid and has an orifice for adjusting the flowing rate in the flowing passage at the gas side and the flowing rate control system for controlling the gas and liquid flowing rates into the nozzle; before setting the facility to the construction-site to set this facility, a facility at the downstream side from the above flowing rate control system is beforehand set in off-line so as to be at least the same relative position in the height direction of the nozzle as the facility to be set at the construction-site and the diameter of the orifice is set so that the liquid quantity of each nozzle becomes a desired quantity. Thereafter, the pressures of gas and liquid in a piping after setting the flow rate control system when the nozzle spouts, are beforehand measured, and after setting this facility at the construction-site, the pressures of the gas and the liquid in the piping are measured, and these pressures and the pressures of the gas and the liquid in the off-line, are compared.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于在施工现场短时间连续铸造中精确设定二次冷却设备等的方法，当连续铸造中的二次冷却设备等被设定时。解决方案：在用于设置具有多个排列的喷嘴组的冷却设备的方法中，所述冷却设备在水平方向和垂直方向上与喷嘴相连，该喷嘴喷出两种气体和液体流体，并且具有用于调节流体的流量的孔在气体侧的流动通道和用于控制进入喷嘴的气体和液体流速的流量控制系统; 在将设备设置到施工现场以设定该设施之前，预先将来自上述流量控制系统的下游侧的设施设置为离线，以使其至少相对于喷嘴作为设置在施工现场的设备，并且孔口的直径被设定为使得每个喷嘴的液体量成为期望的量。此后，预先测量在喷嘴喷出时设定流量控制系统后的管道中的气体和液体的压力，并且在将该设备设置在施工现场之后，管道中的气体和液体的压力为测量，并且这些压力和离线中的气体和液体的压力进行比较。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2005349423A Method for inserting dummy bar and dummy bar used therefor 审中-公开
标题翻译：用于插入DUMMY棒和DUMMY条的方法
公开(公告)号：JP2005349423A
公开(公告)日：2005-12-22
申请号：JP2004171180
申请日：2004-06-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KATO YUICHIRO , NAKADA MASAHIRO
IPC分类号： B22D11/16 , B22D11/08
摘要： PROBLEM TO BE SOLVED: To provide a method for inserting a continuously casting dummy bar with which various kinds of measurements are possible not only in the central part in the width direction of a continuous casting machine but also in a wide range in the width direction without influencing production efficiency, and also the productive efficiency is not reduced, and to provide a dummy bar used therefor.
SOLUTION: In the method for inserting a dummy bar for continuous casting, a dummy bar provided with a measuring device for measuring the intervals of rolls or the like in a continuous casting machine is inserted into continuous casting equipment in which a plate on the short side of a mold is adjustable in the width direction in the mold. The method comprises following procedures: a stage (1) wherein the plate on the short side is arranged at a width larger than that of the measuring device; a stage (2) wherein the dummy bar is inserted from the upper part; a stage (3) wherein, when the measuring device detects the passage of the lower end of the mold, the movement of the plate on the short side in the mold is started toward a prescribed position on the start of the casting; and a stage (4) wherein, when a dummy bar head reaches a prescribed position in the mold, the dummy bar is stopped.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于插入连铸铸造棒的方法，其不仅可以在连续铸造机的宽度方向上的中心部分中进行各种测量，而且可以在宽范围内宽度方向而不影响生产效率，并且生产效率也不降低，并提供用于其的虚拟棒。解决方案：在用于连续铸造的虚拟棒的插入方法中，在连续铸造机中设置有用于测量辊等间隔的测量装置的虚拟棒被插入到连续铸造设备中，模具的短边可在模具中的宽度方向上调节。该方法包括以下步骤：一个阶段（1），其中短边上的板布置成比测量装置的宽度大的宽度; （2），其中所述虚拟棒从所述上部插入; （3）其中，当所述测量装置检测到所述模具的下端的通过时，在所述铸件开始时，所述模具中的所述短边的所述板的移动朝向规定的位置开始; 和阶段（4），其中当虚拟棒头到达模具中的规定位置时，虚拟棒停止。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JPH1180826A LOW SILICON STEEL AND PRODUCTION THEREOF 失效
公开(公告)号：JPH1180826A
公开(公告)日：1999-03-26
申请号：JP23589997
申请日：1997-09-01
申请人： NIPPON STEEL CORP
发明人： NAKADA MASAHIRO , IDEMOTO YOJI , TAKAHASHI HIROMI
IPC分类号： B22D11/00 , C21C7/00 , C21C7/04 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide a steel having component system which can cast the low Si steel by using Al addition without developing the problem even in a billet continuous caster, and a producing method thereof. SOLUTION: In the low Si steel containing by wt.% of >=0.010% Al and =0.005%. The producing method of this low Si steel is executed by adjusting the slag composition before adding Ca to the following composition. (a) CaO/SiO2 is made to >=5 and (b) SiO2 made to

7. 发明专利

JP2008100249A Continuous casting method and continuous casting equipment for steel 有权
标题翻译：连续铸造方法和连续铸钢设备
公开(公告)号：JP2008100249A
公开(公告)日：2008-05-01
申请号：JP2006283727
申请日：2006-10-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NIITSUMA MINERO , NAKADA MASAHIRO , KAJITANI TOSHIYUKI
IPC分类号： B22D11/22 , B22D11/12 , B22D11/124
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method and continuous casting equipment for steel where, when a continuously cast slab of steel having high surface crack sensitivity is produced by a curved type and vertical bending type continuous casting machine having a straightening band, the cracks of a slab surface are prevented, and the slab having excellent surface properties is produced.
SOLUTION: In the continuous casting method for steel having a straightening band, a secondary cooling apparatus capable of controlling the straightening band region independently is provided, the quantity of cooling water in the secondary cooling of the straightening band is reduced or is made zero, and the surface layer of the slab is recuperated, thus the surface of the slab is heated-up at the straightening band, so as to prevent the cracks in the surface of the slab. The temperature rising rate is preferably controlled to ≥30°C/min on the average in the straightening band. In the secondary cooling apparatus for cooling the straightening band, the starting side in the cooling range is preferably controlled within 2.0 m in the upstream from the final straightening point.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种连续铸造方法和连续铸造设备，其中当具有高表面裂纹敏感性的钢的连续铸造板坯通过具有矫直的弯曲型和垂直弯曲型连续铸造机生产时可以防止板坯表面的裂纹，产生具有优异表面特性的板坯。解决方案：在具有矫直带的钢的连续铸造方法中，提供能够独立地控制矫直带区域的二次冷却装置，矫直带的二次冷却中的冷却水量减少或制成零，并且板坯的表层被回收，因此板坯的表面在矫直带处加热，以防止板坯表面的裂纹。升温带的平均升温速度优选控制在≥30℃/分钟以下。在用于冷却矫正带的二次冷却装置中，冷却范围的起始侧在最终矫直点的上游优选控制在2.0μm以内。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JPH0741820A METHOD FOR MELTING HIGH CLEANLINESS STEEL 失效
公开(公告)号：JPH0741820A
公开(公告)日：1995-02-10
申请号：JP16277393
申请日：1993-06-30
申请人： NIPPON STEEL CORP
发明人： NAKADA MASAHIRO , MIYAMOTO KOICHI , NIINUMA SHIGERU
IPC分类号： C21C7/00 , C21C7/072
摘要： PURPOSE:To improve the Al2O3 absorbency of a slag and to obtain a high cleanliness steel having extremely small quantity of Al2O3 inclusion by stirring the ladle slag after executing degassing treatment and adjusting a CaO/SiO2 ratio in the slag to a specific range. CONSTITUTION:Molten steel melted in a refining furnace of converter, etc., is tapped and the vacuum degassing treatment is executed to the molten steel received in the ladle and the slag floated up on the molten steel executing the vacuum degassing treatment is stirred. Then, the CaO/Al2O3 ratio in the ladle slag is adjusted to 0.5-2.2. This stirring is executed by a bottom blowing bubbling, injection or gas-blowing and quick lime and/or flux for adjusting Al2O3 are added in this process. Further, it is desirable to add the quick lime and/or the flux for adjusting Al2O3 in the melting process.

9. 发明专利

JP2002213423A CONNECTING MECHANISM FOR HOISTING ACCESSORY 失效
公开(公告)号：JP2002213423A
公开(公告)日：2002-07-31
申请号：JP2001007194
申请日：2001-01-16
申请人： NIPPON STEEL CORP
发明人： KOIDE NOBUYUKI , OKUDA TSUKASA , NAKAHANA HISAO , NAKADA MASAHIRO
IPC分类号： B66C1/10 , F16B1/00 , F16B21/10
摘要： PROBLEM TO BE SOLVED: To provide a connecting mechanism for a hoisting accessory enabling an operator to easily install and remove a connecting pin even if a suspending cargo becomes large in hoisting accessory of a crane. SOLUTION: In this connecting mechanism for the hoisting accessory for connecting an upper side member 1 of the hoisting accessory of the crane, and also a lower side member 2 under the upper side member, the connecting mechanism has respectively coaxially communicating holes in the horizontal direction by superposing the upper side member for sandwiching the lower side member. The hole of the upper side member is an elongated hole 5 which is long in the vertical direction, and has the connecting pin 3 communicating with the respective holes, and whose one has one end having a diameter larger than a shaft part for preventing slip-out from the holes. A drop preventive plate 4 for preventing dropping of the connecting pin is arranged at a position for covering a connecting pin head part, when lifting an upper member to a connecting pin head part side lower part in the upper side member.

10. 发明专利

JPH08229670A CLEANING METHOD OF MOLTEN METAL TO REMOVE BUBBLE AND IMPURITIES AND DEVICE THEREFOR 失效
公开(公告)号：JPH08229670A
公开(公告)日：1996-09-10
申请号：JP3637995
申请日：1995-02-24
申请人： NIPPON STEEL CORP
发明人： UCHIMURA MITSUO , SUGIMARU SATOSHI , NAKADA MASAHIRO
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/115 , B22D11/116 , B22D11/117 , B22D43/00 , C21C7/072 , F27D3/15
摘要： PURPOSE: To prevent bubble from permeating into a mold and reduce frequency of nozzle clogging by blowing in inert gas from the inner wall of cylinder while giving rotary motion to the molten metal passing through a cylinder. CONSTITUTION: Molten metal is given rotary motion in a cylinder by an electromagnetic agitating coil 1 arranged between a tundish 11 and immersion nozzle 9. Inert gas is blown in by a gas blowing in refractory 2 made of porous plug or alumina graphite embedded in cylinder wall. The inert gas blown in from the gas blowing in refractory 2 has shear force and centrifugal force field on furnace wall, bubble is divided/micronized to a micronized bubble 12. The micronized bubble 12 is accumulated in center part by centrifugal separation, each bubble gathers each other as approaching to center so as to be combined/ enlarged to a large bubble 13 and then floated. While bubble moves from furnace wall to center, impurities are accumulated on the surface of bubble, impurities together with bubble are floated/separated.

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