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11. 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

12. 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.

13. 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.

14. 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

15. 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.

16. 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

17. 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.

18. 发明专利

JPH0649521A FURNACE BODY EXCHANGE METHOD FOR CONVERTER 失效
公开(公告)号：JPH0649521A
公开(公告)日：1994-02-22
申请号：JP20517692
申请日：1992-07-31
申请人： SUMITOMO METAL IND
发明人： FUJIWARA KIYOTO , OKADA TAKESHI
IPC分类号： C21C5/46 , C21C5/48
摘要： PURPOSE:To exchange furnace bodies without spending high costs for furnace body moving equipment even with the furnace body of a heavy brick weight. CONSTITUTION:The furnace body 1 to be exchanged is transferred from an operation position to a disassembly and assembly position, where at least the bottom part of the bottom part and cone part is separated from the furnace body 1. The furnace body or the assembly of the furnace body and the cone part is thereafter moved by a crane 6 for pouring to a repair position. On the other hand, the fresh furnace body or the assembly of the furnace body and the cone part is transferred by the crane 6 for pouring to the disassembly and assembly position where the furnace body is assembled. This furnace body is thereafter returned to the operation position.

19. 发明专利

JPH0310011A METHOD FOR ESTIMATING MANGANESE IN DEPHOSPHORIZED IRON IN CONVERTER BLOWING 失效
公开(公告)号：JPH0310011A
公开(公告)日：1991-01-17
申请号：JP14379789
申请日：1989-06-06
申请人： SUMITOMO METAL IND
发明人： OKADA TAKESHI , NAGAHATA TSUTOMU
IPC分类号： C21C5/28
摘要： PURPOSE:To improve the yield of Fe and (Mn) at end point at the time of steelmaking refining by estimating Mn loss during steelmaking, refining with estimation of (Mn) in the end point with a competitive model as competitive reaction of oxidation caused by FeO in molten slag and O2 in molten iron at the time of producing molten steel by executing decarbonizing-refining to the molten iron with predephosphorizing-refining executed in a converter. CONSTITUTION:In the case of refining the molten steel by charging the blast furnace molten iron with the pre-dephosphorizing treatment executed and execut ing the decarbonizing-refining to the contained carbon, it is assumed that the oxidizing loss of (Mn) in the molten steel into the molten slag is generated with the competitive reaction between oxidizing reaction cause by FeO in the molten slag and oxidizing reaction caused by (O2) in the molten iron as MnO into the molten slag, and the (Mn) value at the end point at the time of steelmaking refining finish is estimated with the equation I and the equation II with high accuracy. By this method, the yield of Fe of the raw material and (Mn) at the end point can be improved with the min. slag refining.

20. 发明专利

JPH02142654A METHOD AND APPARATUS FOR CONTINUOUSLY CASTING ROUND CAST BILLET 失效
公开(公告)号：JPH02142654A
公开(公告)日：1990-05-31
申请号：JP29526388
申请日：1988-11-22
申请人： SUMITOMO METAL IND
发明人： MIKI HIROTAKA , OKADA TAKESHI , TSUJITA SUSUMU , TOMONO HIROSHI , NAKAMURA MASAHIRO
IPC分类号： B22D11/12 , B22D11/128
摘要： PURPOSE:To obtain a high quality round cast billet without any internal cracking by straightening the cast billet with the dead wt. while turning, the direction with guide of straightening rolls and drawing with rotation of pinch rolls contacting with the cast billet while rolling after completing the solidification. CONSTITUTION:Plural holding rolls 6, 6... arranged inside of a curved line as facing to the straightening rolls 5, 5... are made to shift to the prescribed position in contacting direction with the cast billet 3 only at the time of starting the cast. Then, by holding the tip part of the cast billet 3 running from the mold 1 while applying the prescribed rolling reduction, the cast billet 3 is drawn and delivered to the pinch rolls 4, 4.... After completing the delivery, the holding rolls 6, 6... are made to shift to the position, where the holding rolls is not contact-rolled with the cast billet 3. After separating the holding rolls 6, 6..., the cast billet 3 is bent by guiding with the straightening rolls 5, 5... and advanced while straightening with the dead wt. and drawn with rotation of the pinch rolls 4, 4... at downstream side from the solidification completing position. By this method, as only bending stress is acted at the step having non-solidified part, the development of the internal crack is reduced.

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