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1. 发明专利

JP2002285217A DEPHOSPHORIZING AGENT AND DESULFURIZING AGENT FOR MOLTEN IRON AND MOLTEN STEEL 失效
公开(公告)号：JP2002285217A
公开(公告)日：2002-10-03
申请号：JP2001085142
申请日：2001-03-23
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , HOSHIKAWA IKUO
IPC分类号： C21C7/064 , C21C1/02 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide a dephosphorizing agent and a desulfurizing agent for molten iron and molten steel consisting essentially of inexpensive CaO which can safely be used without affecting any troubles to the working environment and a facility and devices, etc., and also, has a reactivity and a slag-removability almost the same degree as in the case of adding CaF2 . SOLUTION: These agents comprise addition of a compound containing Na2 O into the treating agent consisting essentially of lime.

2. 发明专利

JP2002105521A METHOD FOR DEPHOSPHORIZING MOLTEN IRON 失效
公开(公告)号：JP2002105521A
公开(公告)日：2002-04-10
申请号：JP2000294303
申请日：2000-09-27
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , HOSHIKAWA IKUO
IPC分类号： C21C1/02
摘要： PROBLEM TO BE SOLVED: To provide a method for dephosphorizing molten iron by which the sticking and the growth of slag on the inner surface of refractory at a free- board part in a reaction vessel are restrained. SOLUTION: In the dephosphorizing treatment of the molten iron performed by using a dephosphorizing agent >=25 mass% of the total CaO of which is replaced with CaO in the converter slag and an oxidizing agent, the liquid-phase ratio of the slag in the reaction vessel is held to =80 mass% at least in a period of >=80% for performing the dephosphorizing treatment.

3. 发明专利

JP2001032031A ALUMINUM ALLOY SHEET FOR STRUCTURAL MATERIAL, EXCELLENT IN STRESS CORROSION CRACKING RESISTANCE 失效
公开(公告)号：JP2001032031A
公开(公告)日：2001-02-06
申请号：JP20750199
申请日：1999-07-22
申请人： KOBE STEEL LTD
发明人： MATSUZAKI HITOSHI , SAKAGUCHI KIYONOBU
IPC分类号： C22C21/06
摘要： PROBLEM TO BE SOLVED: To increase strength after final annealing treatment to a specific value or above and to improve stress corrosion cracking resistance by regulating the electric conductivity, after annealing treatment, of an aluminum alloy sheet having Mg content in a specific range to a value in a specific range. SOLUTION: In the Al-Mg type aluminum alloy sheet containing 3.5-5.5 mass % Mg and having >=250 N/mm2 strength (σB) after final annealing treatment, electric conductivity after the annealing treatment is regulated to 26.5-29.6 IACS%. In order to regulate the electric conductivity of the Al alloy sheet after the final annealing treatment to

4. 发明专利

JPH11250747A MANUFACTURE OF NB3SN BASED SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH11250747A
公开(公告)日：1999-09-17
申请号：JP4786698
申请日：1998-02-27
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , MATSUZAKI HITOSHI
IPC分类号： B22D11/00 , B22D11/06 , B22D19/00 , C22C27/02 , H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To simply and efficiently insert an Nb core material into high SnCu-Sn alloy and to prevent Sn segregation by solidifying Cu-Sn molten alloy, while feeding a plurality of Nb wires in a mold of a continuous casting device and by heat treating the obtained composite conductor material after depressive working. SOLUTION: Cu-Sn molten alloy 1 is poured from a tundish 8 into a mold for a belt type continuos casting device constituted of an upper belt 4a and a lower belt 4b, which are synchronously moved, and a pair of side dams 5. A plurality of Nb wires fed via a guide 7 are fixed to a starting block 6 whose one end is moved along with the belt 4 to be fed in the mold and moved in such a state as dipped in the molten metal in the mold. Pressurized water is injected into the mold from a cooling water jet 9 and the molten metal in the mold is cooled and solidified, while being pressurized. A composite conductor material having an Nb core material arranged in the inside of the obtained Cu-Sn alloy is degressively worked into a prescribed wire diameter and then heat treated so that Nb3 Sn intermetallic compound is formed.

5. 发明专利

JPH09192791A COOLING PAD IN BELT TYPE CONTINUOUS CASTER 失效
公开(公告)号：JPH09192791A
公开(公告)日：1997-07-29
申请号：JP839896
申请日：1996-01-22
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , YOSHIKAWA KATSUYUKI , MATSUZAKI HITOSHI , YAMAMOTO KOTARO
IPC分类号： B22D11/04 , B22D11/055 , B22D11/06
摘要： PROBLEM TO BE SOLVED: To surely prevent the deterioration in surface characteristic of a cast slab and the deformation of a belt, at the time of casting the cast slab with a belt type continuous caster. SOLUTION: Besides nozzles 12 for flowing out cooling water w to plural nozzle supporting bodies 11 freely attachable/detachable, spare nozzles 13 closing the nozzle holes with releaf valves 14 composed of valve elements 14a energized with coil springs 14b, are arranged. By this constitution, even if the flowing-out condition is deteriorated by clogging the nozzle 12, since the cooling water w is flowed out from the spare nozzle 13 by opening the releaf valve 14 caused by the rising of pressure of the cooling water in a cooling liquid chamber 15 and the cast slab 6 can uniformly be cooled through the belts 4, the deterioration of surface characteristic of the cast slab 6 and the deformation of the belt 4 can surely be prevented.

6. 发明专利

JPH09192788A SHIFTING MOLD TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH09192788A
公开(公告)日：1997-07-29
申请号：JP266096
申请日：1996-01-10
申请人： KOBE STEEL LTD
发明人： YOSHIKAWA KATSUYUKI , MATSUZAKI HITOSHI , SAKAGUCHI KIYONOBU
IPC分类号： B22D11/06 , B22D11/10 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To improve the workability and to prevent the penetrating phenomenon of molten metal by arranging a slidable closed member at a gap between the inner surface of a mold and the surroundings of a molten metal pouring nozzle and also, a gas passage in the wall of the pouring nozzle and opening a gas injecting hole into the gap. SOLUTION: The slidable closed member 20 is arranged at the gap between the square inner surface of the mold and the surroundings of the molten metal pouring nozzle 3 and also, the gas passage 16 is arranged in the longitudinal direction in the wall of the pouring nozzle 3 and the gas injecting hole 14 is opened into the gap. Molten metal static pressure Ph detected with a molten metal surface level sensor 19 and gas pressure Pb in the gap 15 detected with a gas pressure sensor 18 are comparison-operated with a computing element 21. The pressure of the gas G is controlled so that the Ph is almost equalized to the Pb with a pressure control unit 22. By this constitution, the trouble, such as the penetration of molten metal or the entrapment of gas caused by the excess or the shortage of loaded pressure can be prevented.

7. 发明专利

JP2001121246A BELT TYPE CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2001121246A
公开(公告)日：2001-05-08
申请号：JP30059999
申请日：1999-10-22
申请人： KOBE STEEL LTD
发明人： MATSUZAKI HITOSHI , SAKAGUCHI KIYONOBU
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a belt type continuous casting method, by which the ununiformity of temperature developed in a cast slab is prevented by restraining a gap developed between movable casting belts and the cast slab. SOLUTION: This belt type continuous casting method is executed by providing one pair of the endless movable casting belts 2 and 3 and short side molds 5 disposed between this one pair of the endless movable casting belts 2 and 3, and by cooling and solidifying molten metal 14 poured into a mold part 11 consisting of these movable casting belts 2 and 3 and the short side molds 5 to produce a metallic thin plate 10. Surface smoothening rolls 9 and 9 are disposed to the rear surfaces of the movable casting belts 2 and 3 at the position where the deformable solidified shells having specified thickness are formed and also, the surface smoothening roll 9 is pushed to the thickness direction of the cast metallic thin plate 10 to execute the casting.

8. 发明专利

JP2000000640A TWIN-ROLL CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JP2000000640A
公开(公告)日：2000-01-07
申请号：JP16978698
申请日：1998-06-17
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , MATSUZAKI HITOSHI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To prevent penetration of molten metal by forming a pair of side gates of a self sliding material splitting, the side gates to right and left ones at the casting line, providing a pressing means to independently press aside a bottom part of the split side gates and a roll to reduce a gap between the side gates and the roll. SOLUTION: A continuous casting equipment directly manufactures a metallic sheet by passing a molten metal in a gap between rolls. Split side gates are split into two or more parts in a direction orthogonal to the casting direction, and each part is independently and movably mounted in the axial direction of the rolls. A self sliding material is preferably graphite. After bottom part of the side gates 10 is machined to the same curvature as that of a circumferential surface of rolls 1a, 1b, and split in right and left parts relative to the casting line, and further split into two. Split side gates 10a, 10b, 10c, 10d are mounted on a side gate support body 7, and a roll circumferential surface is independently pressed by springs 8a, 8b, 8c, 8d and holding plates 9a, 9b, 9c and 9d. The side gates are prevented from being broken, and the wear is reduced.

9. 发明专利

JPH1076351A BELT TYPE SHIN SLAB CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH1076351A
公开(公告)日：1998-03-24
申请号：JP22996796
申请日：1996-08-30
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , MATSUZAKI HITOSHI , YOSHIKAWA KATSUYUKI
IPC分类号： B22D11/06 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To prevent the breaking of a pouring nozzle and the leakage of molten metal and to improve safety in the operation by providing with the pouring nozzle so as to move and return with respect to a tundish and further providing with a molten metal feed stopping means. SOLUTION: A pair of endless belts 3 opposing each other are moved via a pulley 4, the molten metal is fed from the tundish 2 into a casting space formed between endless belts via the pouring nozzle 1 and cooled with a cooling device 5 and solidified to manufacture a cast slab. In the belt type thin slab continuous casting machine, the molten metal pouring nozzle 1 is made to move by sliding on a connecting tube 13 and further made to return by connecting the tundish 2 and a flange part 8 with a spring 10. Also, the claw 15 of a moving rod 11 attached to the flange part 8 is brought into contact with a limitter 14 when the molten metal nozzle 1 moves by a prescribed distance, a stopper 9 is operated with the signal via a stopper moving mechanism 12, and whereby the molten metal is stopped to feed.

10. 发明专利

JPH09201655A MOLTEN METAL POURING NOZZLE FOR SHIFTING MOLD THIN SLAB CONTINUOUS CASTER AND METHOD FOR POURING MOLTEN METAL IN THIN SLAB CONTINUOUS CASTER 失效
公开(公告)号：JPH09201655A
公开(公告)日：1997-08-05
申请号：JP840296
申请日：1996-01-22
申请人： KOBE STEEL LTD
发明人： SAKAGUCHI KIYONOBU , MATSUZAKI HITOSHI , YOSHIKAWA KATSUYUKI
IPC分类号： B22D11/16 , B22D11/06 , B22D11/10 , B22D41/50
摘要： PROBLEM TO BE SOLVED: To enhance the safety of casting operation in a shifting mold thin slab continuous caster by preventing the leakage of molten metal from a gap between the shifting mold and a molten metal pouring nozzle to eliminate the happening of a secondary disaster, such as steam explosion. SOLUTION: A notching part 14 is arranged around the outer periphery of the tip part near a tundish 10 side from a tip sliding number 12 of the molten metal pouring nozzle 11 inserted into a shifting mold 4, and a thermocouple 15 is embedded so that the temp. measured point 15a positions at the tip side by 1-2mm from the notching part 14. When the temp. measured with this thermocouple 15 becomes the preset temp. or higher, a stopper 10a is automatically worked to stop the pouring of molten metal. In such a way, the development of crack communicated from the bottom part of the notching part 14 to the inner side is detected as the starting time of the breakage of the molten metal pouring nozzle 11 with the temp. raising caused by invasion of the molten metal, and the leakage of molten metal is prevented by stopping the pouring of molten metal before breaking the molten metal pouring nozzle 1.

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