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1. 发明专利

JP2000119729A STRUCTURE OF TUYERE FOR AOD FURNACE AND METHOD FOR RAISING TEMPERATURE 失效
公开(公告)号：JP2000119729A
公开(公告)日：2000-04-25
申请号：JP28542298
申请日：1998-10-07
申请人： SUMITOMO METAL IND , SHINAGAWA REFRACTORIES CO
发明人： OKADA TAKESHI , IMANISHI MASAKI , MORISHITA SHIGEYOSHI , OGATA MASANORI
IPC分类号： C21C5/28 , C21C5/44 , C21C5/48
摘要： PROBLEM TO BE SOLVED: To improve the durability of a refractory around the inserting hole of a tuyere at preheating time after lining an AOD furnace. SOLUTION: Relating to the AOD furnace provided with the tuyere inserting hole 6 for inserting the tuyere tube in the lined refractory 3 around the furnace bottom part 4, a refractory 7 for plug is fitted so as to be freely inserted/ removed into the tuyere inserting hole 6. The refractory for plug has desirably 30-200 mm length and the gap with the inner peripheral surface of the tuyere inserting hole is in the range of 0.2-2.0 mm.

2. 发明专利

JPH11158534A VACUUM TREATING VESSEL 失效
公开(公告)号：JPH11158534A
公开(公告)日：1999-06-15
申请号：JP32408697
申请日：1997-11-26
申请人： SUMITOMO METAL IND , SHINAGAWA REFRACTORIES CO
发明人： OKADA TAKESHI , HAYASHI MITSUYUKI , NAKAMURA RYOSUKE , OGATA MASANORI
IPC分类号： C04B35/047 , C04B35/42 , C21C7/00 , C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a vacuum treating vessel (vessel for executing the treatment of molten steel under vacuum) remarkably improved in the durability. SOLUTION: As lining brick in the vacuum treating vessel, a magnesia-chrome brick having m permeability, obtd. by blending 70-90 wt.% electromelting magnesia-chrome raw material and firing at 1700 deg.C, is used. In this way, the infiltration of slag to the magnesia-chrome brick under vacuum is restrained, and the damage and erosion of this brick are reduced and the durability of the vacuum treating vessel can be improved.

3. 发明专利

JPH1161231A JIG FOR REPAIRING INNER WALL OF MOLTEN METAL DISCHARGING HOLE 失效
公开(公告)号：JPH1161231A
公开(公告)日：1999-03-05
申请号：JP21875097
申请日：1997-08-13
申请人： SUMITOMO METAL IND , SHINAGAWA REFRACTORIES CO
发明人： OKADA TAKESHI , NOMURA OSAMU , TAKENAKA HIROSHI , TADA HIDENORI
IPC分类号： C21C5/52 , C21C5/46
摘要： PROBLEM TO BE SOLVED: To provide a jig for repairing the inner wall of a molten metal discharging hole in a vessel for metal refining in a hot-state which shortens such a repairing time of the molten metal discharging hole becoming an obstructing factor of the operation and can uniformly and precisely execute the repair of the most important furnace inside. SOLUTION: The jig for repairing the inner wall of the molten metal discharging hole in the vessel for metal refining in the hot-state, is provided with a heat resistant cylindrical member 1, a monolithic refractory material layer 2 arranged on the outer peripheral surface of the heat resistant cylindrical member and metallic fastner 3 arranged at arbitrary position of the heat resistant cylindrical member under projecting condition of penetrating the monolithic refractory material layer toward the outer part from the heat resistant cylindrical member.

4. 发明专利

JP2000063926A REFRACTORY STRUCTURE SURROUNDING TUYERE IN AOD FURNACE 失效
公开(公告)号：JP2000063926A
公开(公告)日：2000-02-29
申请号：JP22916198
申请日：1998-08-13
申请人： SUMITOMO METAL IND , SHINAGAWA REFRACTORIES CO
发明人： OKADA TAKESHI , IMANISHI MASAKI , KUSAKA MISAO , OGATA MASANORI
IPC分类号： C21C7/00 , C21C7/072 , C21C7/10 , F27B3/22 , F27D1/04
摘要： PROBLEM TO BE SOLVED: To prevent the damage caused by thermal expansion of refractory at the surrounding part of a tuyere in an AOD furnace and to improve the durability of the tuyere part. SOLUTION: The tuyere in the AOD furnace is constituted with a tuyere holding brick 1 having almost the same length as permanent bricks 2 constituting the furnace wall and a gas feeding hole 5, a tuyere brick 8 joined with the inner end of this tuyere holding brick 3 and having almost the same length as wear bricks 6 constituting the inside of the furnace wall and a gas feeding hole 7 communicating with the gas feeding hole 5 in the tuyere holding brick 3 and dovetail bricks 4 arranged between the tuyere holding brick 3 and the permanent bricks 2.

5. 发明专利

JP2006055865A Method for cooling slab 有权
标题翻译：冷却SLAB的方法
公开(公告)号：JP2006055865A
公开(公告)日：2006-03-02
申请号：JP2004238165
申请日：2004-08-18
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YAMAMOTO SHINYA , OKADA TAKESHI , AOKI SATORU
IPC分类号： B22D11/124 , B21C51/00 , B22D11/12 , B22D11/22 , B22D30/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and efficient method for cooling a slab by which the developments of warping and rust can be prevented. SOLUTION: The method for cooling the slab includes: leaving continuously cast slabs in the atmosphere as they are till the temperature of the side surface thereof lowers to ≤600°C then stacking them to ≥1 m height, or stacking the slabs just after subjected to continuous casting to ≥1 m height then leaving them in the atmosphere as they are till the temperature of the side surface thereof lowers to ≤600°C; and cooling both side surfaces of the stacked slabs in the longitudinal direction thereof by spraying water, the stacked slabs being positioned beneath and except within the range from the upper surface of the uppermost stage of the stacked slabs downward to at least to 0.3 m. Further, it is preferable that a space in which water spraying equipment for cooling both side surfaces of the slabs in the longitudinal direction thereof can be arranged is secured when slabs are stacked, and that both side surfaces of the slabs in the longitudinal direction thereof except the range at least to 1 m toward the center part in the longitudinal direction of the slab from a marking surface is cooled by spraying water. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种廉价有效的冷却方法，通过该方法可以防止翘曲和锈蚀的发展。解决方案：用于冷却板坯的方法包括：将大气中的连续铸造坯料直接留在大气中直至其侧面的温度降低至≤600℃，然后将其堆叠至≥1m高度，或堆叠板坯刚刚经过连续铸造至≥1m高度，然后将它们留在大气中直到其侧面的温度降低至≤600℃; 并且通过喷射水来冷却层叠板坯的长度方向的两侧面，堆叠的板坯位于层叠板的最上层的上表面的下方且不在至少0.3m的范围内。此外，优选地，当板坯堆叠时，可以布置用于冷却板坯在其纵向方向上的两个侧面的喷水设备的空间，并且沿其纵向方向的板坯的两个侧表面除从标记面朝向板坯的长度方向的中心部分至少1m的范围通过喷水冷却。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2000144272A METHOD FOR RECOVERING CHROMIUM AND IRON IN MELTING AND SMELTING STEEL CONTAINING CHROMIUM 失效
公开(公告)号：JP2000144272A
公开(公告)日：2000-05-26
申请号：JP31038598
申请日：1998-10-30
申请人： SUMITOMO METAL IND
发明人： FUJIWARA MICHITAKE , OKADA TAKESHI , TSUNASHIMA YUJIRO
IPC分类号： C22B7/04 , C21C5/36 , C21C5/54 , C21C7/00 , C22B9/10 , C22B34/32
摘要： PROBLEM TO BE SOLVED: To provide a slag free from degradation of the production efficiency, little in loss of heat energy, and free from air pollution by transferring the molten slag generated during the melting or the refining to another container together with a molten steel, adding a reducing agent, and stirring the slag and the molten steel by blowing the inert gas. SOLUTION: A molten slag 4 generated in melting or refining a steel containing chromium in an electric furnace 1 (or a converter) is transferred to a ladle 5 together with a molten steel 3, and an aluminum dross 6 which is a reducing agent to reduce an oxide of chromium or iron is added to the ladle 5. Then, the slag 4 and the molten steel 3 are stirred in the ladle 5 by blowing argon gas 8 from the top through a lance 7 immersed in the molten steel 3, or inserting an impeller 9 to turn the impeller 9. The aluminum dross 6 may be added in the molten slag 4 and the molten steel 3 in the electric furnace 1.

7. 发明专利

JP2590675B2 失效
公开(公告)号：JP2590675B2
公开(公告)日：1997-03-12
申请号：JP20517692
申请日：1992-07-31
申请人： SUMITOMO METAL IND
发明人： FUJIWARA KYOTO , OKADA TAKESHI
IPC分类号： C21C5/46 , C21C5/48

8. 发明专利

JPH0919750A METHOD FOR CUTTING OFF CAST SLAB IN CONTINUOUS CASTER 失效
公开(公告)号：JPH0919750A
公开(公告)日：1997-01-21
申请号：JP18860295
申请日：1995-06-30
申请人： SUMITOMO METAL IND
发明人： KAWAI TAKEHIRO , SASABE YUKIHIRO , OKADA TAKESHI , TSUJITA SUSUMU , MORI HIRONOSUKE
IPC分类号： B22D11/16 , B22D11/20
摘要： PURPOSE: To reduce the load of an operator, to avoid the development of trouble and to improve the working rate of a continuous caster by quantitatively analyzing the developing process of the trouble, in which a cut-off device arrives the limited position of travelable range till completing the cut-off. CONSTITUTION: An arithmetic unit 8 fetches information related to casting speed, etc., from a pinch roll control unit 9 and also, information related to the traveling position of a cut-off device 4 and the shifting position of a cut-off torch 6 form a cut-off control unit 7. A time required till completing the cut-off and a distance, in which the cut-off device 4 travels till completing the cut-off form the casting speed, are obtd. during cutting off the cast slab 2 with the cut-off device 4 by using these informations. The trouble, ink which the cut-off device 4 arrives the limited position of the travelable range before completing the cut-off is quantitatively predicted by comparing the obtd. distance with the travelable remaining distance of the cut-off device 4. A speed instruction for avoiding the trouble is given to the cut-off control unit 7 and the pinch roll control unit 9 based on this trouble prediction information.

9. 发明专利

JP2508880B2 失效
公开(公告)号：JP2508880B2
公开(公告)日：1996-06-19
申请号：JP9981490
申请日：1990-04-16
申请人： SUMITOMO METAL IND
发明人： MORYA TETSUYA , OKADA TAKESHI , TSUKAGUCHI JUICHI , IMANISHI MASAKI , SATO KAZUHISA
IPC分类号： C04B35/66

10. 发明专利

JPH0819856A HEAT INSULATING DEVICE FOR NOZZLE FOR MOLTEN METAL 失效
公开(公告)号：JPH0819856A
公开(公告)日：1996-01-23
申请号：JP17755194
申请日：1994-07-06
申请人： TOSHIBA CERAMICS CO , TOSHIBA CORP , SUMITOMO METAL IND
发明人： KANAI YUICHI , SATO AKIRA , IURA SHINICHIRO , TSUJIMOTO KENICHI , MIZUTANI SHOGO , HAYASHI KENZO , KAWAMURA TOSHIO , KAWAHIGASHI SATASHI , OKADA TAKESHI
IPC分类号： B22D41/56 , B22D11/10 , B22D41/60
摘要： PURPOSE:To simplify a device without requiring a burner by sucking the high temp. preheating gas in a vessel for molten metal from the lower part of a nozzle and preheating the nozzle in the state or newly mounting this nozzle in the tap hole of this vessel for the metal. CONSTITUTION:This heat insulating device 5 is installed on a truck 5 moving or rails and has a horn-shaped guiding hood 7 enclosing the circumference of the nozzle 5, a suction device 8 installed integrally below this guiding hood and a positioning mechanism 9 for positioning the guide hood 7 of this suction device 8 at the bottom end of the nozzle 4. The device is composed of a lifting cylinder 10 which attaches and detaches this positioning mechanism 9 to and from the nozzle 4 by vertically moving the mechanism 9 and an air introducing device 11 for inducing an ejector effect by introducing high-pressure air into the suction device 8. As a result, the device is simplified and peeling of a coating material for preventing oxidation applied on the nozzle 4 and variation in heating temp. by the position in the vertical direction of the nozzle are eliminated and the heating up effect with good balance even among different kinds of steels is obtd.

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