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1. 发明专利

JPH11267800A TUNDISH FOR CONTINUOUS CASTING AND ITS PRODUCTION 失效
公开(公告)号：JPH11267800A
公开(公告)日：1999-10-05
申请号：JP7227498
申请日：1998-03-20
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： TOKI MASAHIRO , ITO SATOSHI , IWATA SUNAO , KUDO KOICHI
IPC分类号： B22D11/10
摘要： PROBLEM TO BE SOLVED: To prevent splashing and to regulate the pouring flow of open pouring by constituting inlet refractories which constitute an inlet and have a through-hole of a flow regulating cylindrical section and a pouring nozzle part which is enclosed by the same, exists in the lower part of at the flow regulating cylindrical section and encloses the through-hole of the inlet refractories. SOLUTION: The flow regulating cylindrical section 3 made of the refractories having the through-hole 4 is arranged in the upper part and outer periphery of the pouring nozzle section 2. The flow regulating cylindrical section 3 is integrally composed of the refractories and the pouring nozzle section 2 is formed to the form that this section is inserted into the flow regulating cylindrical section 3 and, therefore, the external shape of the inlet refractories is determined by the shape of the flow regulating cylindrical section 3. The height above the inlet nozzle section 2 is required to be >=50 mm in order to sufficiently exhibit a flow regulating effect. When the top end of the flow regulating cylindrical section 3 is lower than the surface of the refractories at the bottom of the tundish and a large difference in level occurs, a pouring basin part is formed in the upper part of the flow regulating cylindrical section 3 and harmful vortexes are generated to splash the pouring flow and, therefore, the flow regulating cylindrical section 3 is so arranged as to obviate the occurrence of the difference in level.

2. 发明专利

JP2004276094A Method for continuous casting of billet 审中-公开
公开(公告)号：JP2004276094A
公开(公告)日：2004-10-07
申请号：JP2003073579
申请日：2003-03-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TOKI MASAHIRO , IWATA SUNAO
IPC分类号： B22D11/124 , B22D11/00 , B22D11/04 , B22D11/128
摘要： PROBLEM TO BE SOLVED: To provide a method for a continuous casting of a billet in which the drawing of the low carbon steel billet from a casting mold 1 is smoothly performed in the continuous casting, the drawing of the low carbon steel billet is smoothly performed in a light reduction zone 5 of the continuous casting, and the center segregation of the high carbon steel billet is improved by a light reduction in the continuous casting.
SOLUTION: The objects are attained by optimizing the density of a water flow for the secondary cooling of the cast piece by spray nozzles 3 in a length range of 300 mm from the bottom end of the casting mold 1 and by controlling the bulging amount of the cast piece. Namely, the density of the water flow is 0.04 m
3 /m
2 /s or more in the continuous casting of the low carbon steel billet of 0.04 mass% or less carbon content, and the density of the water flow is 0.03 m
3 /m
2 /s or more under the light reduction in the continuous casting of the high carbon steel billet of 0.40 mass% or more carbon content. Further, in the casting at a high speed over 3 m/min, a casting mold with an electromagnetic agitator is used and the density of the water flow for the secondary cooling of the cast piece is 0.03 m
3 /m
2 /s or more in the length range of 300 mm from the bottom end of the casting mold.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JPS5564952A INJECTION METHOD OF MOLTEN STEEL INTO CONTINUOUS CASTING MOLD 失效
公开(公告)号：JPS5564952A
公开(公告)日：1980-05-16
申请号：JP13829778
申请日：1978-11-09
申请人： NIPPON STEEL CORP
发明人： UEZAKI HIROKUNI , KAKIZAKI MITSUO , KATOU HIROATSU , IWATA SUNAO
IPC分类号： B22D11/10 , B22D11/103
摘要： PURPOSE:To accelerate floating of inclusions in molten steel by disposing a baffle plate for the main flow of the effluent molten steel from the discharge orifice of an immersion nozzle toward the inside wall of the mold. CONSTITUTION:A baffle plate 6 is disposed in the intermediate position between the discharge port 2 of an immersion nozzle 1 and the inside wall of a mold 3. The molten steel main flow F flowed out from the discharge port 2 is powerful in flow and advances in its extension direction but it collides against the face of the baffle plate 6 and diverts to the upward flow F4 and downward flows F5, F6. The downward flows F5, F6 have already stalled owing to face collision and therefore they flow downward while being pushed by the subsequent flows, but the inner flow F5 begins to float slowly to the central direction in the mold 3. On the other hand, the outer flow F6 in question flows downward along the baffle plate 6 face and when there is no more face, it begins to flow slowly to the side direction of the mold 3. In this case, there is a suitable spacing between the baffle plate 6 and shell 5 and the flow F6 is not hampered and floating of the inclusions being carried is assisted by this.

4. 发明专利

JPS5933059B2 JPS5933059B2 - 失效
公开(公告)号：JPS5933059B2
公开(公告)日：1984-08-13
申请号：JP8659079
申请日：1979-07-09
申请人： Nippon Steel Corp
发明人： OOGUCHI SHIGERU , MURATA MITSUO , OOTA MITSUHIRO , IWATA SUNAO
IPC分类号： B22D11/04 , B22D11/053 , B22D11/055 , B22D11/07

5. 发明专利

JPS5626562A PREVENTION OF CLOGGING IN SPRAY NOZZLE OF FLUID SPOUTER 失效
公开(公告)号：JPS5626562A
公开(公告)日：1981-03-14
申请号：JP10300279
申请日：1979-08-11
申请人： NIPPON STEEL CORP , SHIMADA RIKA KOGYO KK
发明人： AMANO HIROSHI , OOKUBO NAOTAKE , OOTA MITSUHIRO , IWATA SUNAO , HARADA YASUYUKI
IPC分类号： B05B1/00 , B05B15/02
摘要： PURPOSE:To effectively prevent the clogging of plural nozzles by driving a vibrator connected through a horn to a vibrating plate fixed to nozzle headers by supersonic waves of periodially different frequencies. CONSTITUTION:From a plurality of nozzle bodies 2 fastened to each of a plural set of the nozzle headers 11-15, cooling water for cooling cast moldings in continuous casting method, for example, is injected. Each of the nozzle headers is fitted with the vibrating plates 31-35 each of which is fitted with one of the horns 411-415 and one of the horns 421-425. Also, each of the horns 411-415 is connected to each of the electrostrictive vibrators 51-55 and the vibrator and both solid horns are directly connected the axially. And, supersonic vibration is applied to the headers 11-15 through each horn and the vibrating plates by driving the vibrating plates 51-55 by supersonic waves of periodically different frquencies.

6. 发明专利

JP2009196037A Grinder and grinding control method 有权
标题翻译：研磨和研磨控制方法
公开(公告)号：JP2009196037A
公开(公告)日：2009-09-03
申请号：JP2008040397
申请日：2008-02-21
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIURA YOSHIAKI , IWATA SUNAO
IPC分类号： B24B49/00 , B24B7/06 , B24B49/12
摘要： PROBLEM TO BE SOLVED: To solve a problem with a conventional grinder wherein a failure to grind occurs when the surface of a cast piece with an unequal width is automatically ground.
SOLUTION: This grinder 10 for grinding the surface of a cast piece with an unequal width comprises: a grinding wheel 32; a grinding wheel 32 moving part for moving the grinding wheel 32; a measuring part for measuring the profile of the surface of the cast piece with the unequal width; and a control part for calculating a first grinding path for linearly grinding the surface of the cast piece at a specified grinding angle using the grinding wheel 32 and a second grinding path for grinding the surface of the cast piece at an angle different from the specified grinding angle using the grinding wheel 32, linearly grinding the surface of the cast piece along the first grinding path using the grinding wheel 32 of the grinder 10, repeatedly performing the linear grinding by moving the grinding wheel 32 at intervals in the direction perpendicular to the linear direction, and so controlling as to grind the end of the surface of the cast piece as a remaining part after the linear grinding along the second grinding path using the grinding wheel 32.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了解决当具有不等宽度的铸件的表面自动磨削时发生磨削不良的传统研磨机的问题。解决方案：用于研磨具有不等宽度的铸件表面的研磨机10包括：砂轮32; 用于移动砂轮32的砂轮32移动部件; 用于测量具有不等宽度的铸件表面轮廓的测量部件; 以及控制部件，用于计算用于使用砂轮32以特定的研磨角度直线研磨铸件的表面的第一研磨路径和用于以不同于特定研磨的角度研磨铸件表面的第二研磨路径使用研磨轮32的角度，使用研磨机10的研磨轮32沿着第一研磨路线直线研磨铸件的表面，通过沿与垂直于线性方向垂直的方向间隔地移动砂轮32来重复地进行线性磨削方向，并且因此在使用砂轮32沿着第二研磨路径进行直线磨削之后，将铸件的表面的末端作为剩余部分进行磨削。（C）2009年，JPO＆INPIT

7. 发明专利

JPS5611134A SOLIDIFYING METHOD FOR METAL 失效
公开(公告)号：JPS5611134A
公开(公告)日：1981-02-04
申请号：JP8558279
申请日：1979-07-06
申请人： NIPPON STEEL CORP
发明人： SAEKI TAKESHI , OOGUCHI SHIGERU , UEZAKI HIROKUNI , IWATA SUNAO
IPC分类号： B22D27/08 , B22D11/114 , B22D27/20
摘要： PURPOSE:To manufacture a metal ingot having excellent cast surface in the solidification of molten metal, by giving oscillation of a specific high frequency to the metal so as to prevent the inclusion of air bubbles in the solidified metal. CONSTITUTION:In a continuous casting, 5-50kHz high frequency oscillation generated by a high frequency oscillator 4 is transferred through a horn 5 to the copper plate part 2 of a casting mold by means of an oscillation-transferring plate 6. As a result, the high frequency oscillation is transferred to the steel solidifying from the surface layer while the molten metal descends along the wall surface of the mold and is cooled by a water cooling box 3, hence air bubbles included in the surface layer of the molten steel are scattered and removed. Hereby no gas holes are formed in the surface layer of the ingot, consequently the extant of mending required after rolling is reduced. When the molten steel is solidified after poured into a mold, an ingot having an excellent cross sectional shape is obtained by giving high frequency oscillation to the molten steel to the course of the solidification, through the mold on a molding board.

8. 发明专利

JPH1071461A APPARATUS AND METHOD FOR DISCHARGING MOLTEN METAL IN CASE OF EMERGENCY 失效
公开(公告)号：JPH1071461A
公开(公告)日：1998-03-17
申请号：JP22646096
申请日：1996-08-28
申请人： NIPPON STEEL CORP
发明人： NAKADA MASAHIRO , IWATA SUNAO , AZUMA TOYOICHIRO
IPC分类号： B22D11/10 , B22D35/00 , B22D37/00 , B22D46/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus by which the other strands, etc., are prevented from failing the pouring flow is prevented from scattering and drifting to normally drop the pouring flow to a trough at the time of stopping the pouring of molten metal from a tundish to a mold in emergency, and to provide the method therefor. SOLUTION: In a molten metal pouring equipment provided with a supporting device for an air-tight pouring equipment, supporting the air-tight pouring equipment in the pouring flow position at the time of casting, this apparatus is used for switching the pouring flow passage from the tundish to the mold instantaneously into the emergent discharging direction. The apparatus is provided with a taking-out device which takes out the air-tight pouring device from the supporting device 5 and can hold the taken-out air-tight pouring device. Further, the apparatus is provided with the trough 6 which can moved between the tundish and the mold and through which the molten metal is allowed to flow from the pouring flow side to the discharging position side by positioning the other end at the discharging position of the molten metal when the one end stops at the pouring flow position.

9. 发明专利

JPH02140621A VORTEX TYPE MOLD LEVEL INSTRUMENT 失效
公开(公告)号：JPH02140621A
公开(公告)日：1990-05-30
申请号：JP29364188
申请日：1988-11-22
申请人： NIPPON STEEL CORP
发明人： KUROKAWA TETSUAKI , MURAYAMA MASANAO , TSURUOKA SHIGEO , IWATA SUNAO
IPC分类号： G01F23/22 , B22D11/16 , G01F23/26
摘要： PURPOSE:To always correct the bias by simple operation by providing a detection coil, a detecting and amplifying means, a level arithmetic means for a vortex level instrument, a temperature detecting element, a reference value arithmetic means, a delay means and a subtracting means. CONSTITUTION:A detecting and amplifying means 30 detects and amplifies a voltage induced in a detection coil 14 and outputs a voltage signal, and a vortex level instrument use level arithmetic means 33 calculates a molten metal surface level from its voltage signal. Correcting means 31, 32 correct a bias portion of the voltage signal. A reference value arithmetic means 47 calculates a reference signal corresponding to the voltage signal from outputs of plural temperature detecting elements 16 buried in the side face of a mold 50 and outputs it. A delay means 41 gives a delay corresponding to a delay of the element 16 to the voltage signal and sets said signal to a delay voltage signal. Also, a subtracting means 44 subtracts a reference signal from this delay voltage signal and sets it to a correction use signal for the correcting means 31, 32. Since a signal for correcting the bias by a reference signal which is calculated, based on an output signal of the element 16 is always calculated, the bias can be corrected at any time by a simple operation.

10. 发明专利

JPS5611174A IMPROVING METHOD OF SOLIDIFIED STRUCTURE OF CASTING SURFACE 失效
公开(公告)号：JPS5611174A
公开(公告)日：1981-02-04
申请号：JP8659379
申请日：1979-07-09
申请人： NIPPON STEEL CORP
发明人： SAEKI TAKESHI , OOGUCHI SHIGERU , UEZAKI HIROKUNI , IWATA SUNAO
IPC分类号： B22D7/00 , B22D27/08
摘要： PURPOSE:To form dense solidified structure in the surface layer by applying predetermined high-frequency oscillations until molten metal is solidified to a predetermined thickness. CONSTITUTION:High-frequency oscillations of 5-50kHz are applied to solidifying metal until the finely grained solidified shell in its surface layer becomes 5-30mm. thick. For example, molten steel 1 of 0.15% C, 0.20% Si, 0.80% Mn, 0.020% P, 0.020% S, 0.020% Al and Fe for the remainder is put in a mold 2 of 100mm.X 1,200mm.X800mm. and is continuously cast at a 0.9m/min drawing speed. High-frequency oscillations of 18kHz frequency are applied to the mole 2 at 50kW output by a high-frequency oscillator 4 via a horn 5 and an oscillation transmitting plate 6. (5kW/faceX2 faces=10kW on the mold wall faces adjacent to the short side of 100mm. of the ingot, 20kW/faceX2 faces=4CkW on the long side of 120mm. side of the ingot, total 50kW). Thereby, the fine free crystal portions are obtained from the surface down to a depth of 15mm. and the solidified structure of the casting surfaces is improved.

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