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1. 发明专利

JPH11239864A SLIDE PLATE 失效
公开(公告)号：JPH11239864A
公开(公告)日：1999-09-07
申请号：JP4394398
申请日：1998-02-25
申请人： TOSHIBA CERAMICS CO
发明人： YAMADA HIROSHI , MASUDA TAKESHI , KATO HIDEAKI , MUKOYAMA KENICHI
IPC分类号： B22D11/10 , B22D41/28
摘要： PROBLEM TO BE SOLVED: To improved a gas sealing effect for preventing oxidation of molten steel and to extend the service life of a slide plate by arranging blowing holes at the peripheral edge parts mutually faced in the longitudinal direction of the plate base material and the opposite position to a molten steel pouring hole and the actual operating surface of the plate base material. SOLUTION: The slit state blowing holes 16a, 16b are arranged at the inner peripheral upper part 3u of the peripheral edge parts 15a, 15b mutually faced in the longitudinal direction of the plate base material 2, constituted with the inner peripheral upper part 3u of a frame body 3 and the outer peripheral upper part 11u of the plate base material 2, and this blowing holes 16a, 16b are communicated with a gas passage 12. Therefore, at the time of pouring the molten steel, the invasion of the air from the molten steel pouring hole 10 by passing through fine gap developed between the sliding surface of a fixed plate and the sliding surface 7 of the slide plate 1, is prevented with inert gas blown from the blowing holes 16a, 16b, and it is effectively prevented that the molten steel is oxidized and deteriorated by the invaded air. Further, the neiboring part 20 of the molten steel pouring hole 10 becoming high temp., is cooled with the inert gas.

2. 发明专利

JPH11221665A PLATE FOR SLIDE GATE AND ITS PRODUCTION 失效
公开(公告)号：JPH11221665A
公开(公告)日：1999-08-17
申请号：JP2556498
申请日：1998-02-06
申请人： TOSHIBA CERAMICS CO
发明人： MORITA OSAMU , HARA KIYONORI , KATO HIDEAKI , OKADA KEIKO , MUKOYAMA KENICHI
IPC分类号： B22D11/10 , B22D41/28 , B22D41/30
摘要： PROBLEM TO BE SOLVED: To improve the strength of a plate and to make the restraining force by a clamper uniform by forming the sectional shape of a hoop to be shrinkage fitted to a plate body to a U shape and injecting a packing material into the gap of the shrinkage fitted surfaces via a space formed with the outer peripheral surface of the plate, then solidifying this material. SOLUTION: The hoop 4 made of iron to be shrinkage fitted to the outer peripheral surface 3 of. the plate body 2 is formed to a shape adding a margin for the shrinkage fit to the outer peripheral surface 3 of the plate body 2. The sectional surface shape is formed to the U shape and the recessed part of the U shape after the shrinkage fit forms the space part 7 over the entire periphery of the inner peripheral surface of the hoop 4. The packing material 8 is injected and packed into the space part 7 from an injection hole 8 after the shrinkage fit to fill the spacing G communicating with the space part 7 generated between the plate body 2 and the hoop 4. The packing material is cured by heating and drying. The width of the hoop 4 is specified to 25 to 30 mm, the thickness to >=3 mm and the height of the space part 7 is specified to >=1.5 mm. and

3. 发明专利

JPH10235456A REFRACTORY FOR CONTINUOUS CASTING, AND ITS EXECUTION METHOD 失效
公开(公告)号：JPH10235456A
公开(公告)日：1998-09-08
申请号：JP4435097
申请日：1997-02-27
申请人： TOSHIBA CERAMICS CO
发明人： HARA KIYONORI , KATO HIDEAKI , MORITA OSAMU , ITO KAZUO , TAZOE KEIKO
IPC分类号： B22D11/10
摘要： PROBLEM TO BE SOLVED: To secure the excellent sealability from the joint between a slide plate mechanism and the refractory forming a nozzle to a housing part by continuously and integratedly forming the packing of the cushioning seal packing material with flexibility. SOLUTION: A first cushioning seal packing 2 and a second cushioning seal packing 4' are cut in the same shape as that of a slide plate 7a to form a slide gate mechanism body 7 and in the annular shape from the sealing packing material with flexibility, and when they are combined with each other, a continuous structure is provided. The slide gate mechanism body 7 comprises two flat slide plates 7a, 7b provided with a through hole to form a flow passage 8 of the molten metal in a fixing manner, and a third slide plate 7c which is slidably operated between the surfaces opposite to each other of the plates 7a, 7b and in which a through hole to form the flow passage 8 of the molten metal is formed.

4. 发明专利

JPH09174232A LOWER PLATE FOR SLIDE GATE 失效
公开(公告)号：JPH09174232A
公开(公告)日：1997-07-08
申请号：JP35132995
申请日：1995-12-27
申请人： TOSHIBA CERAMICS CO
发明人： TAZOE KEIKO , YAMADA HIROSHI , MUKOYAMA KENICHI , KATO HIDEAKI , HARA KIYONORI , MORITA OSAMU
IPC分类号： B22D37/00 , B22D41/28
摘要： PROBLEM TO BE SOLVED: To restrain the entrapment of the air caused by voltex and flow speed and to obtain a cast product having little product defect caused by gas bubble by arranging a recessed part for restraining the voltex and the flow speed, adjoined on the sliding surface side of a through-hole and forming the bottom part. SOLUTION: A lower plate 11 has the through-hole 12 as a passage of molten metal and the surrounding of the though-hole 12 is projected to the reverse side to the sliding surface to form the thick thickness. On the sliding surface side 15 of the lower plate 11, the recessed part 23 for restraining the voltex and the flow speed adjoined on the through-hole 12 is formed to the shape opened upward and the side surface in the right side is inclined. By this formation, flow passage cross sectional area of the recessed part 23 forms smaller according to approaching the bottom part to contruct the flow. Therefore, the straightening action of the flow can be further improved.

5. 发明专利

JPH0859337A CASTING REFRACTORY AND CASTING NOZZLE 失效
公开(公告)号：JPH0859337A
公开(公告)日：1996-03-05
申请号：JP20936594
申请日：1994-08-11
申请人： TOSHIBA CERAMICS CO
发明人： KATO HIDEAKI , HARA KIYONORI , SAKAI HIROSHI , OOYA SATOSHI , MORITA OSAMU , ITO KAZUO
IPC分类号： B22D41/32 , B22D41/54 , C04B35/103
摘要： PURPOSE: To obtain a refractory excellent in resistance to oxidation, spalling and thermal shock and to which a packing is not firmly attached by forming the refractory from alumina, silica, carbon, metallic silicon, metallic aluminum, boron carbide and soda glass. CONSTITUTION: The casting refractory consists of 40-70wt.% alumina, 5-20wt.% silica, 5-15wt.% carbon, 1-3wt.% metallic silicon, 0.5-2wt.% metallic aluminum, 0.5-3wt.% boron carbide and 1-5wt.% soda glass. The maximum grain size of the raw material for a casting refractory is preferably controlled to =70wt.% silica.

6. 发明专利

JPH03183666A PRODUCTION OF REFRACTORIES 失效
公开(公告)号：JPH03183666A
公开(公告)日：1991-08-09
申请号：JP31766089
申请日：1989-12-08
申请人： TOSHIBA CERAMICS CO
发明人： NIWA SHIGEKI , SHIBATA SHOJI , KATO HIDEAKI , KONDO NORIO , IWAZAWA TSUTOMU
IPC分类号： B22D41/32 , C04B35/76
摘要： PURPOSE:To obtain the refractories having excellent durability and a long service life by kneading and molding refractory aggregate without contg. C powder, Al fiber of a prescribed diameter and length, metal (alloy) powder of Si, Fe, etc., of specific grain sizes, and a binder, then heat treating the molding in a nonoxidative atmosphere. CONSTITUTION:The refractory aggregate (for example, sintered alumina) with contg. the C powder at 80 to 99.3wt.%, the Al fibers having 20 to 200mum diameter and 1 to 7mm length at 0.2 to 10wt.% and >=1 kinds among metal powders and the alloys of these metals having

7. 发明专利

JPH0283277A PRODUCTION OF POROUS CERAMICS 失效
公开(公告)号：JPH0283277A
公开(公告)日：1990-03-23
申请号：JP23556488
申请日：1988-09-20
申请人： TOSHIBA CERAMICS CO
发明人： KUROKI TOMOHITO , KATO HIDEAKI , TERASAKI HISASHI
IPC分类号： C04B38/00
摘要： PURPOSE:To obtain a porous ceramics having narrow pore size distribution in high yield by sintering a formed article of ceramic particles in a gas having a specific pressure. CONSTITUTION:Particles of a ceramics such as Al2O3, SiC, mullite or zirconia are added with an organic binder or a sintering assistant, the mixture is formed and the obtained formed article is sintered at >=1700 deg.C in a high-pressure gas atmosphere of N2, Ar, etc., having a pressure of >=2atm to obtain the objective sintered porous ceramic material having a pore size distribution of 0.1-10mum.

8. 发明专利

JPH11347716A DEVICE FOR DISCHARGING MOLTEN METAL 失效
公开(公告)号：JPH11347716A
公开(公告)日：1999-12-21
申请号：JP15315098
申请日：1998-06-02
申请人： TOSHIBA CERAMICS CO
发明人： KATO HIDEAKI , HARA KIYONORI , HIRANO TAKAAKI , KAWARADA KOJI , OKADA KEIKO
IPC分类号： B22D11/10 , B22D41/42
摘要： PROBLEM TO BE SOLVED: To provide a molten metal discharging device, in which there is no fear that a molten metal passing-through hole in a fixed plate is clogged with the molten metal, and the air is prevented from being sucked from the outer part due to the negative pressure in the molten metal passing-through hole caused by the flowing of the molten metal. SOLUTION: In the actual working surface 7 of a sliding plate 5 for closing the molten metal passing-through hole 2 in the fixed plate 3, a blowing hole 9 for blowing inert gas, is disposed. During the execution of opening/closing process of the molten metal passing-through hole 2 with the sliding plate 5, and at the time of fully stopping the molten metal passing-through hole 2 by stopping the sliding, the blowing hole 9 is arranged in the actual working surface 7 so as to blow the inert gas into the molten metal passing-through hole 2 from the blowing hole 9.

9. 发明专利

JPH1024359A NOZZLE FOR SLIDE GATE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH1024359A
公开(公告)日：1998-01-27
申请号：JP8555997
申请日：1997-03-21
申请人： TOSHIBA CERAMICS CO
发明人： MUKOYAMA KENICHI , SUGIURA SADANOBU , HIRANO TAKAAKI , KATO HIDEAKI , HARA KIYONORI , MORITA OSAMU , OKADA KEIKO
IPC分类号： B22D41/32 , C04B35/66
摘要： PROBLEM TO BE SOLVED: To eliminate the difference in an iron shell fitting work among individuals, to improve the filling density, to secure the high expansion coefficient, to extend the durable service life and to reduce the manufacturing cost. SOLUTION: In a nozzle for a slide gate having the protecting iron shell 2, a nozzle body 1 is formed with dryship and the protecting iron shell 2 is fitted to the nozzle body 1 by using a self-flow castable refractory 6. In the manufacturing method of the nozzle for the slide gate having the protecting iron shell 2, the nozzle body 1 is formed with the dryship and the protecting iron shell 2 is set to the outside of the nozzle body 1 and the self-flow castable refractory 6 is allowed to flow into the gap 4 between both of the nozzle body and the protecting iron shell without vibration.

10. 发明专利

JPH09206921A NOZZLE FOR SLIDE GATE 失效
公开(公告)号：JPH09206921A
公开(公告)日：1997-08-12
申请号：JP3871396
申请日：1996-02-01
申请人： TOSHIBA CERAMICS CO
发明人： MUKOYAMA KENICHI , SUGIURA SADANOBU , KATO HIDEAKI , HARA KIYONORI , MORITA OSAMU , TAZOE KEIKO
IPC分类号： B22D41/32 , B22D11/10 , B22D41/34
摘要： PROBLEM TO BE SOLVED: To restrain a rise of temp. in a protecting shell enclosing the main body of a lower nozzle by arranging a heat insulating material having a prescribed characteristic on the outer peripheral side surface in the lower nozzle for the sliding gate. SOLUTION: The main body 3b of the lower nozzle is composed of Al2 O3 -C material, the outer peripheral side surface and lower bottom surface are coated with the heat insulating material 6, and further a protecting shell 3d is installed via a mortal 3c on the periphery. The material of the heat insulating material 6 is composed of Al2 O3 -SiO2 , Al2 O3 -SiO2 -C, or Al2 O3 -SiO2 -CaO. The thermal conductivity is selected from the range of 0.05-1.5Kcal/m.hr. deg.C and the thickness is specified to be 0.2-3mm.

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