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1. 发明专利

JP2000202584A CONTINUOUS CASTING METHOD AND MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JP2000202584A
公开(公告)日：2000-07-25
申请号：JP885299
申请日：1999-01-18
申请人： KAWASAKI STEEL CO
发明人： TAKAHASHI KIYOSHI , IWATANI AKIYUKI , IMASHIRO MOTOHIRO
IPC分类号： B22D11/04 , B22D11/055 , B22D11/059
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting mold having long service life, with which molten metal near the molten metal surface level can slowly be cooled and a cast slab having little surface defect can be produced and even in the case the molten metal surface level rises, the breakout and the damage of a mold are not caused. SOLUTION: Relating to this continuous casting mold, a low thermal conductivity layer 5 of

2. 发明专利

JPH09157722A TORPEDO CAR EXCELLENT IN SLAG REMOVABILITY 失效
公开(公告)号：JPH09157722A
公开(公告)日：1997-06-17
申请号：JP31197295
申请日：1995-11-30
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , YUHARA SUSUMU
IPC分类号： C21C1/06
摘要： PROBLEM TO BE SOLVED: To provide a torpedo car excellent in a slag removability and to improve the transporting efficiency of molten iron by improving the shape of the furnace body. SOLUTION: In a torpedo type mixer can provided with a furnace body 5 composed of a straight barrel part 2 and a conical part 3 having both end surfaces of the straight barrel part as each bottom surface connected with the straight barrel part and provided with a furnace opening part 1 in the straight barrel part, the length L of the straight barrel part at least around the furnace opening part is

3. 发明专利

JPH06220551A METHOD FOR REMOVING NONMETALLIC INCLUSION IN MOLTEN METAL BY ULTRASONIC WAVE 失效
公开(公告)号：JPH06220551A
公开(公告)日：1994-08-09
申请号：JP1309293
申请日：1993-01-29
申请人： KAWASAKI STEEL CO
发明人： MIZOTA HISAKAZU , TAKASHIBA NOBUMOTO , IMASHIRO MOTOHIRO
IPC分类号： B21B1/00 , B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D43/00 , C21C7/10 , C22B9/02 , C22B9/05
摘要： PURPOSE:To efficiently decrease the nonmetallic inclusions in molten steel by impressing ultrasonic waves to the molten steel under an RH degassing treatment to generate fine bubbles, thereby accelerating floating of the nonmetallic inclusions and reaction at the boundary between the metal and slag. CONSTITUTION:A riser immersion pipe 3 provided in the lower part of a degassing chamber 5 and a downcomer immersion pipe 4 are immersed into the molten steel 2 in a ladle 1 and the molten steel 2 is returned between the ladle 1 and the degassing chamber 5 and is thus subjected to the RH degassing treatment. A horn connected with an ultrasonic vibrator transducer is immersed into the molten steel and the ultrasonic waves is impressed to the molten steel 2 during this RH degassing treatment, by which the fine bubbles are generated in the molten steel 2. The fine bubbles float and separate the finer nonmetallic inclusion such as Al2O3 existing in the molten steel 2 by trapping these inclusions. The boundary between the molten steel 2 and the slag 7 in the ladle 1 is also finely vibrated by the impressed ultrasonic waves and, therefore, the boundary reaction of the molten steel 2 and the slag 7 is accelerated. As a result, the effect of removing the nonmetallic inclusions is increased and the generation of the surface defects of the product is drastically lessened.

4. 发明专利

JP2001011518A SHAPE OF FURNACE OPENING PART IN MIXER CAR 失效
公开(公告)号：JP2001011518A
公开(公告)日：2001-01-16
申请号：JP18153799
申请日：1999-06-28
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , TAKAHASHI KIYOSHI , GOTO NOBUTAKA
IPC分类号： C21C1/06
摘要： PROBLEM TO BE SOLVED: To improve the service life of a refractory by embedding an arc-shape rectangular steel plate which is curved in a concave shape in the inside of a furnace opening part into the refractory at the corner part of the rectangular furnace opening part in a mixer car, and forming iron shells at the furnace opening part in the double state. SOLUTION: The furnace opening part 10 is formed by fitting the side wall iron shells 21, 24 in the furnace opening part at the outside of the iron shell in a furnace body so as to form the rectangular opening part. Then, on the upper surface of a receiving plate 23 arranged at the inside of the side wall iron shell 24 in the furnace opening part, the arc-shape steel plate 22 curved in the concave shape in the inside of the furnace opening part near the corner part of the furnace opening part 10 is elected and embedded into the refractory 30. In this way, the cooling of the refractory 30 is improved by shortening the distance from the working surface of the refractory 30 to the arc-shape steel plate 22, and also, the lengths of an anchor and a core metal can be shortened and the reinforcement of the refractory 30 is facilitated. Since this arc-shape steel plate 2 is not a strength member of the furnace body, the plate having about

5. 发明专利

JPH10314910A ROLL ROTATIONAL ABNORMALITY DETECTING DEVICE IN CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH10314910A
公开(公告)日：1998-12-02
申请号：JP13199097
申请日：1997-05-22
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , TAKADA SHIGENOBU
IPC分类号： B22D11/16
摘要： PROBLEM TO BE SOLVED: To detect the rotational abnormality of a non-driving roll with the difference of the frictional reaction between the roll contacting objects of a pair of upper and lower rolls at the time of the rotational abnormality by arranging the torque limiter applying a pressing force from one side of roll end surface and arranging the rotation detector of a sprocket in the other side of end surface to the sprocket installed the belt whose outer peripheral surface comes into close contact with the non-driving roll around it. SOLUTION: The belt 6 is closely installed around the sprocket 5. Since both rolls are smoothly rotated at the time of the normal operation without the rotational abnormality of a pair of non-driving rolls 3a, 3b, the frictional reactions from the upper and lower rolls 3a, 3b become equal, and the sprocket 5 is hardly rotated. However, when either roll is not in the rotating state, since the reaction of this roll becomes large, the upper and lower balance is lost and the sprocket 5 is rotated. Therefore, the rotational abnormality of the non-driving roll is very simply detected by detecting this rotation with the rotation detector 8.

6. 发明专利

JPH10280024A REFINING APPARATUS 失效
公开(公告)号：JPH10280024A
公开(公告)日：1998-10-20
申请号：JP8925697
申请日：1997-04-08
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , YUHARA SUSUMU , TAKAHASHI KIYOSHI
IPC分类号： C21C5/28 , C21C5/46
摘要： PROBLEM TO BE SOLVED: To provide a refining apparatus for molten metal which can restrain the development of dust, and a refining method for molten metal. SOLUTION: A static magnetic field generating device 4 is attached to the side part of the refining vessel (apparatus) 1 and the shaking of the molten metal 3 surface developed by blowing refining gas from a top-blown lance 2 is reduced by impressing the static magnetic field to the molten metal 3, and the development of splash 6 is restrained and the development of dust is reduced. A static magnetic field generating device 4 is suitable to be possible to generate the magnetic field having >=0.3 T magnetic flux density.

7. 发明专利

JPH09308947A DEVICE FOR CHANGING WIDTH OF CONTINUOUS CASTING MOLD 失效
公开(公告)号：JPH09308947A
公开(公告)日：1997-12-02
申请号：JP12589296
申请日：1996-05-21
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , YUHARA SUSUMU
IPC分类号： B22D11/00 , B22D11/04 , B22D11/05
摘要： PROBLEM TO BE SOLVED: To extend the change range of long side width of a mold in a limited strand interval by dividing mold supporting frame in the existing two-strand slab continuous caster into the width direction of the cast slab, interposing an expanding devices in the dividing parts and making shiftable of the mold in the long side direction of the cast slab. SOLUTION: The mold supporting frame 4 arranged to face oppositely with the center line 11 of the continuous caster between, is divided in the width direction of the cast slab and the expanding devices 5 composed of a jack or a cylinder, etc., are set in the divided parts. Then, this frame is made movable in the width direction of the long side 1 of the mold under condition of fitting the conventional jacks or the cylinders 3 for moving the short sides 9. By this constitution, the casting width of the cast slab can be changed in the wide range without changing the distance from the strand center to the center of the continuous caster. Further, four pieces of the expanding devices 5 are wholly made equal to keep the strand center to the constant, and it is desirable to set wheels, etc., so as to smoothly shift the supporting frames of the short sides of the mold.

8. 发明专利

JPH09122834A CONTINUOUS CASTING MOLD 失效
公开(公告)号：JPH09122834A
公开(公告)日：1997-05-13
申请号：JP27907495
申请日：1995-10-26
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , MIZOTA HISAKAZU
IPC分类号： B22D11/04 , B22D11/05
摘要： PROBLEM TO BE SOLVED: To provide a structure which facilitates the change in thickness of a continuous casting mold and can quickly replace only short wall sides. SOLUTION: The short wall side is divided into a copper plate side backup frame 3 and a short side shifting device side backup frame 4 and the copper plate side backup frame 3 is formed into an L-shape composed of an upper horizontal member and a vertical member. The short wall side shifting device backup frame 4 is arranged at the lower part of the upper horizontal member and the connecting parts of cooling water passages 15, 16, 17, 18 are arranged upper and lower to face each other.

9. 发明专利

JP2002266056A SLAB HOLDING ROLL FOR CONTINUOUS CASTING 失效
公开(公告)号：JP2002266056A
公开(公告)日：2002-09-18
申请号：JP2001066105
申请日：2001-03-09
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , TAKADA SHIGENOBU
IPC分类号： B22D11/128 , C22C38/00 , C22C38/48
摘要： PROBLEM TO BE SOLVED: To form a layer of a build-up welding layer which has more improved corrosion resistance, heat crack resistance and wear resistance on the surface of a slab holding roll used for continuous casting, and to provide the slab holding roll which has an elongated service life. SOLUTION: In the slab holding roll for continuous casting, the surface of a core is provided with a build-up welding layer of precipitation hardening martensitic stainless steel. The build-up welding layer has a composition containing, by mass, 0.01 to 0.07% C,

10. 发明专利

JP2001288506A METHOD FOR STIRRING TREATMENT OF MOLTEN METAL 失效
公开(公告)号：JP2001288506A
公开(公告)日：2001-10-19
申请号：JP2000101798
申请日：2000-04-04
申请人： KAWASAKI STEEL CO
发明人： IMASHIRO MOTOHIRO , GOTO NOBUTAKA
IPC分类号： B22D1/00 , C21C1/02 , F27D27/00 , F27D23/04
摘要： PROBLEM TO BE SOLVED: To improve the reaction efficiency by efficiently stirring molten metal. SOLUTION: In the case of performing the stirring treatment of the molten metal with an impeller dipped and disposed into the molten metal, the propeller- like impeller having plural blades with inclining angle, is used and also, a cylindrical or a tubular straightening plate surrounding the impeller, is disposed so as to form the smooth entrained flow from the upper part toward the lower part with respect to the molten metal.

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