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1. 发明专利

JPH07164134A DEVICE FOR CONTROLLING FLOW RATE OF MOLTEN METAL VESSEL AND METHOD FOR ASSEMBLING AND REMOVING FLOW RATE CONTROL DEVICE 失效
公开(公告)号：JPH07164134A
公开(公告)日：1995-06-27
申请号：JP31195793
申请日：1993-12-13
申请人： TOSHIBA CERAMICS CO , SUMITOMO METAL IND
发明人： ASAI MASAMICHI , AOKI TADASHI , SAKURAI KAZUNORI , YASUDA YOSHIHIRO , KUBO YOSHIKAZU , YAGI SHIGEKI , HIROKI NOBUYOSHI
IPC分类号： B22D41/34 , B22D11/10
摘要： PURPOSE:To provide a flow rate control device of a molten metal vessel and a method for easily and quickly assembling or removing a refractory composed of an upper nozzle, upper plate and lower plate. CONSTITUTION:The flow rate control device is provided with the upper nozzle 24 inserted into the bottom part of the molten metal vessel A, the upper plate 25 fitted so as to be freely attached/ detached to a housing 23, the lower plate 28 slidingly bringing into contact with the lower surface of this upper plate so as to be freely slided, a lower nozzle 31 connected with this lower plate and a slider 32 for integrally slide-energizing the lower nozzle and the lower plate. The slider 32 is composed of a slider frame 27 divided into two pieces and fitted so as to freely attach/ detach the lower plate 28 by restraining so as to be freely slid to the housing 23 and a slider bottom 30 inserted to the outer periphery of the lower nozzle 31 by restraining so as to be freely slid to a cover 29.

2. 发明专利

JP2004255433A SLIDE GATE PLATE 审中-公开
公开(公告)号：JP2004255433A
公开(公告)日：2004-09-16
申请号：JP2003050284
申请日：2003-02-27
申请人： TOSHIBA CERAMICS CO
发明人： WATANABE ISAO , SAKURAI KAZUNORI
IPC分类号： B22D11/10 , B22D41/42
摘要： PROBLEM TO BE SOLVED: To provide a slide gate plate equipped with an inert gas blowing mechanism, which can effectively prevent the leakage of the inert gas and can be manufactured simply at a low cost. SOLUTION: In the slide gate plate equipped with the mechanism which blows the inert gas into a molten metal tap hole 4 from a plurality of gas outlets 6 formed in a gas channel ring 5, a refractory ring 8 is put in a ring type channel formed in a contact surface between the bottom face of the gas channel ring 5 and the plate body 1, and mortar 3 bonds and fixes the bottom face of the gas channel ring 5, the refractory ring 8 and the plate body 1 together. COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2001300720A REFRACTORY DEVICE FOR SLIDE GATE 失效
公开(公告)号：JP2001300720A
公开(公告)日：2001-10-30
申请号：JP2000116667
申请日：2000-04-18
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , TERASAKI HISASHI , SUGIYAMA TOMOYUKI
IPC分类号： B22D41/28 , F27D1/00 , F27D1/08 , F27D3/14
摘要： PROBLEM TO BE SOLVED: To provide a refractory device for slide gate with which such trouble as to develop with the heat-conduction of molten metal at the using time is prevented and such trouble as to develop by using under state of loading low stress, is lightened. SOLUTION: The refractory device for slide gate is provided with a slide gate refractory, a metallic ring having a prescribed interference, a metallic vessel and monolithic refractory. The metallic ring is fixed to the side peripheral surface of the slide gate refractory. The slide gate refractory is disposed in the metallic vessel under state of fixing the metallic ring. The monolithic refractory is filled up as joint into each gaps between the metallic ring, the slide gate refractory and the metallic vessel. The metallic ring is covered with the monolithic refractory from the outside of the circle in the metallic ring and the metallic ring is bitten with the monolithic refractory.

4. 发明专利

JP2000247724A PRODUCTION OF FIREBRICK 失效
公开(公告)号：JP2000247724A
公开(公告)日：2000-09-12
申请号：JP4713699
申请日：1999-02-24
申请人： TOSHIBA CERAMICS CO
发明人： SUGIYAMA TOMOYUKI , SAKURAI KAZUNORI , TERASAKI HISASHI
IPC分类号： C04B33/13
摘要： PROBLEM TO BE SOLVED: To provide a method for producing firebrick, capable of producing firebrick hardly causing crack at a low cost even by omitting a drying process. SOLUTION: Combustible powder is added to refractory raw material powder, which is formulated with water to form a molding product raw material. The molding product raw material is molded into a fixed shape to give a molding product. The molding product is baked to give a sintered compact. In baking the molding product, the combustible powder is burnt down to form gaps in the molding product. The gaps promote release of water contained in the molding product.

5. 发明专利

JP2000094122A DEVICE FOR DISCHARGING MOLTEN METAL 失效
公开(公告)号：JP2000094122A
公开(公告)日：2000-04-04
申请号：JP26837898
申请日：1998-09-22
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , TERASAKI HISASHI , SUGIYAMA TOMOYUKI
IPC分类号： B22D11/10 , B22D41/42
摘要： PROBLEM TO BE SOLVED: To provide a discharging device for molten metal, which prevents air from being dragged in from the joint part of a refractory caused by the negative pressure in a molten metal passing-through hole developed with the stream of molten metal and does not develop the lowering of the quality of molten metal and reduces the consumption of inert gas. SOLUTION: This discharging device for molten metal is provided with the refractory forming a slide gate 2 for controlling the stream of molten metal and nozzles 4, 6, 7 fitted to this slide gate 2, and an annular inert gas blowing pipe 14 disposed by concentrically surrounding so as to be faced to the joint part 13 of the refractory. In this inert gas blowing pipe 14, inert gas blowing holes 15 are arranged and positioned in the range so that the angle of elevation from an arbitrary point assumed on the outer periphery of the above joint part becomes 20-70 deg., and so as to be faced to the arbitrary point.

6. 发明专利

JPH10259414A POROUS PLUG FOR BLOWING GAS 失效
公开(公告)号：JPH10259414A
公开(公告)日：1998-09-29
申请号：JP8467197
申请日：1997-03-19
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , KONDO NORIO , KURITA HISATSUGU
IPC分类号： B22D1/00 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To provide a porous plug for blowing gas which can always obtain a constant judgement without fully developing the personal judging difference and can easily judge the damage even at the far position except the operating site. SOLUTION: This porous plug has a constitution which sets at least one pair of lead wires 22 in the inner part of the porous plug body 11 and positions a detecting part 13 of the lead wires 22 so as to come to a prescribed position of the porous plug body 11 and detects the damage at the prescribed position of the porous plug body 11 with the detecting part 13 so as to display this information with a displaying part 14 such as a light or a buzzer.

7. 发明专利

JPH09277028A MANUFACTURE OF PLATE FOR SLIDE GATE DEVICE 失效
公开(公告)号：JPH09277028A
公开(公告)日：1997-10-28
申请号：JP12221396
申请日：1996-04-19
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , KONDO NORIO , KURITA HISATSUGU
IPC分类号： B22D41/30 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To hold a physical characteristic value at the surrounding part of a nozzle hole to a stable and high level by setting the surrounding part of the nozzle hole in a secondary metallic mold and pressing after filling blending compost around the nozzle hole. SOLUTION: A primary metallic mold for preliminarily forming the surrounding part of the nozzle hole is prepared. A round column 2 is arranged at the center of the inner part thereof and the blending compost 3 is filled in the surrounding thereof. Then, an upper mold 5 opening a hole 4 at the center part is inserted into the primary metallic mold 1 and also, after fitting the hole 4 at the center part to the out of the round column 2, the upper mold 5 is pressurized to form the blending compost 3. After, forming, the upper mold 5 is removed from the primary metallic mold 1 to obtain the nozzle hole surrounding part 6 having the nozzle hole 7. The nozzle hole 7 is fitted to the out of the round column 9 in the secondary metallic mold 8. An upper mold 12 opening a hole 11 is inserted into the secondary metallic mold 8 and pressed to obtain a plate 14 for a slide gate device. By this method, the unevenness of the sliding gate device is reduced and the physical characteristic value can be held to the stable and high level.

8. 发明专利

JPH11104814A NOZZLE FOR CASTING 失效
公开(公告)号：JPH11104814A
公开(公告)日：1999-04-20
申请号：JP28314897
申请日：1997-10-01
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , KONDO NORIO
IPC分类号： B22D11/10 , B22D11/106 , B22D41/50 , B22D41/58
摘要： PROBLEM TO BE SOLVED: To obtain a nozzle having a simple shut-off structure from the air with gas and easily manufactured by arranging a metallic pipe between the nozzle refractory for casting and a case arranged on the outer periphery thereof, further arranging plural gas blowing holes or slits in the pipe and sealing with gas near the surrounding of the refractory. SOLUTION: Inert gas is ejected toward the connecting part of the refractory materials 4 between an upper nozzle 1 and a slide gate plate 2 or between the upper nozzle and a lower nozzle or an intermediate nozzle 3 as shown in the arrow mark 10. The connection between the annular metallic pipe 5 and the inert gas introducing metallic pipe 9 can be set linearly or in the diagonal direction while curving the outer periphery of the refractory material 4 between the refractory material 4 and the case 6 of an iron shell, etc., being the outermost layer. Monolithic refractory 7 of mortar, etc., is filled into a part except the arranging part of the metallic pipe 5, i.e., into a remaining part. At the time of filling this monolithic refractory 7, the metallic pipe 5 is made to hold the suitable clearance between the refractory material 4 and the case 6.

9. 发明专利

JPH11104813A PLATE OF SLIDING NOZZLE 失效
公开(公告)号：JPH11104813A
公开(公告)日：1999-04-20
申请号：JP28468697
申请日：1997-10-01
申请人： TOSHIBA CERAMICS CO
发明人： SAKURAI KAZUNORI , KURITA HISATSUGU , KONDO NORIO
IPC分类号： B22D11/18 , B22D11/10 , B22D41/32
摘要： PROBLEM TO BE SOLVED: To improve the toughness and the spalling resistance and to lighten a plate-itself by increasing the usage of woven fabric or fiber as non-woven fabric by burying the woven fabric or the non-woven fabric composed of metallic fiber or ceramic fiber into the center part in the thickness direction of the plate refractory. SOLUTION: The plate 1 is the one used as a movable plate of the intermediate part in three-piece type sliding nozzle. In the plate refractory 3 having a nozzle hole 2 at a prescribed position and composed of alumina-carbon base refractory, met-shaped non-woven fabrics 4 obtd. by orienting e.g. comparatively short alumina fibers having 5-20 mm length and 10-200 μm diameter at random in the three-dimensional direction, are buried into the center part in the thickness direction of the plate refractory 3. The non-woven fabric 4 is made to suitably smaller than the plane shape of the plate refractory 3 and also, has suitably larger through-holes 5 than the nozzle hole 2 and is formed to have the thickness (t) of e.g. about 40% of the thickness T of the plate 1.

10. 发明专利

JPH02211973A SLIDING NOZZLE DEVICE 失效
公开(公告)号：JPH02211973A
公开(公告)日：1990-08-23
申请号：JP3316389
申请日：1989-02-13
申请人： TOSHIBA CERAMICS CO
发明人： SAKAI HIROSHI , ASAI MASAMICHI , HAYASHI KENZO , SAKURAI KAZUNORI , WATANABE KAZUHIKO
IPC分类号： B22D11/10 , B22D41/28 , B22D41/34
摘要： PURPOSE:To prevent a plate refractory from being raised from a metallic case by installing locking parts on the peripheral side of the plate refractory and fixing the locking parts to the metallic case through joining members. CONSTITUTION:In a sliding nozzle device, a dipping nozzle 21 is used integrally with the plate refractory 11 provided an orifice 12 to pour molten metal through the metallic case 17. The locking parts (projections) 15 are provided on the peripheral side of the plate refractory 11 and they are fixed to the metallic case 17 through bolts 18 and nuts (joining members) 19. By this method, a gap is generated between the plate refractory and the dipping nozzle and oxygen can avoid entering inside.

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