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1. 发明专利

JP2000190016A WIDE-FLANGE SHAPE STEEL FLANGE COOLING EQUIPMENT 失效
公开(公告)号：JP2000190016A
公开(公告)日：2000-07-11
申请号：JP36712898
申请日：1998-12-24
申请人： NIPPON KOKAN KK
发明人： FUJIBAYASHI TERUO , NAKASEKO MAKOTO , MAKINOHARA MISAO , ARIMURA TSURUWA , FUJII YUKIO
IPC分类号： B21B45/02 , C21D1/00 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To perform accelerated stable cooling with high cooling efficiency and prevent excessive cooling of a web while preventing the cooling water from running over by inclining, downward from the level, nozzle axes of many nozzles formed in side guides to sandwich both flanges from both sides of the line and guide them. SOLUTION: From guides provided with many cooling water nozzles 3 which also act as side guides 4, cooling water is sprayed to the outside surface of flanges 2 of a wide-flange shape steel 1. This sprayed cooling water is divided into multiple blocks 5 which can independently make flow control and on/off control, and each block 5 is provided with a flow rate valve 6 for flow control and an on/off control valve 7. With this cooling equipment, it is possible to move the side guide 4, a cooler itself, close to the flange 2 to be cooled, and since the side guide 4 itself is provided with the cooling water nozzles 3, the nozzles will not be broken even when the cooling water nozzles 3 are brought into contact with the wide-flange shape steel 1. The pitch of the cooling water nozzles 3 can be optionally selected and high-density cooling can be done.

2. 发明专利

JP2000005805A DRILLING PLUG 失效
公开(公告)号：JP2000005805A
公开(公告)日：2000-01-11
申请号：JP17485098
申请日：1998-06-22
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , KATSUMURA TATSURO , ARIIZUMI TAKASHI , FUJIBAYASHI TERUO , TOMITA SHOGO
IPC分类号： B21B25/00 , B21B25/04
摘要： PROBLEM TO BE SOLVED: To improve durability of a plug so as to increase productivity and reduce expense by supplying and discharging a cooling fluid through a mandrel bar arranged between a plug base part and the plug drill part for cooling the plug outer surface surely at low cost. SOLUTION: Cooling of a plug drill part 2, thickness of which is 20 mm, is carried out by supplying a water as a cooling liquid 9 between a base part 3 and the drill part 2 at approximately 100 l/minute from a central tube 5 of a mandrel bar 8, which is composed of a dual tube. After the cooling is over, the cooling water is discharged through a tube 4 arranged at the outside of the mandrel bar 8. For the plug drill part 2, a JIS standard SKT4, which is a steel being designated for a hot rolling tool, is used, and a JIS standard S45C is used for the plug base part 3. As to the drill part 2, it is used when the highest outer face temperature thereof is 800 deg.C or less. Thickness th(mm) of the drill part 2 is set based on the formula, th=147(Ts)-0.776 (Ts is drill time(second)).

3. 发明专利

JPH10314813A METHOD FOR COOLING PLUG AND DEVICE THEREFOR 失效
公开(公告)号：JPH10314813A
公开(公告)日：1998-12-02
申请号：JP13241897
申请日：1997-05-22
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO , KATSUMURA TATSURO , ARIIZUMI TAKASHI
IPC分类号： B21B25/04
摘要： PROBLEM TO BE SOLVED: To improve cooling efficiency of a piercing plug for piercers and elongators and to increase the frequency of services. SOLUTION: Plural jetting holes 3 are perforated on the inner pipe 7 of a cylindrical double vessel 2. Each of the jetting holes 3 is perforated changing its angle so that cooling liquid 10 is jetted vertically to the surface of the plug 1 having the external size of a cannonball shape. On the outer pipe 6, a water pipe 4 for supplying cooling water is provided through the outer pipe from the outside. The cooling water 10 is filled in a space formed with the outer pipe 6, inner pipe 7 and side-wall flange 12. The plug is covered with the double vessel 2, the cooling water 10 is supplied into the space through the water pipe 4 from a cooling-water supplying mechanism, the cooling water 10 is made to collide against the surface of the plug from the jetting holes 3 at the jetting pressure of 0.2 kgf/cm G. Because the angle of each jetting hole 3 is changed, the cooling water is made to collide agaist the surface of the plug 1 approximately vertically, high heat transfer rate is obtained and the cooling efficiency is improved.

4. 发明专利

JPH10235407A MANUFACTURE OF T-STEEL 失效
公开(公告)号：JPH10235407A
公开(公告)日：1998-09-08
申请号：JP4316297
申请日：1997-02-27
申请人： NIPPON KOKAN KK
发明人： FUJIBAYASHI TERUO , NAKASEKO MAKOTO
IPC分类号： B23D23/00 , B21B1/08 , B21B1/092 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To obtain a T-steel whose bends and deformation are minimized and which is excellent in the stability of manufacture by cooling the outside of flange while transporting T-steels on a roller table overlapping the webs vertically after obtaining two T-steels by executing finish rolling of a wide- flange shape steel or an I-steel with a universal mill and simultaneously cutting its web in the longitudinal direction. SOLUTION: After the wide flange shape is cut into T-steels 4a, 4b with a hot saw which is provided on the downstream side of the universal mill group, immediately those T-steels are transported on the roller table 5 while making the position of the H-shaped hold by supporting them in a state where the webs 22 are vertically overlapped with a jig 6 on the roller table 5. During transporting, cooling water is jetted from spray nozzles 7 on the outsides of the flanges 21. In such a case, by adjustion the flow rate of each spray nozzle 7 and intermittently thinning, flange cooling is controlled.

5. 发明专利

JPH09168816A SHAPE COOLING EQUIPMENT 失效
公开(公告)号：JPH09168816A
公开(公告)日：1997-06-30
申请号：JP33355095
申请日：1995-12-21
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO
IPC分类号： B21B45/02 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide cooling equipment of a shape to change the cooling width without stopping the manufacturing line when the size is changed by turning a conduit tube corresponding to the size of the shape to be cooled. SOLUTION: When the size of a wide flange beam 1 to be cooled is determined, a conduit tube 13 is turned upward or downward by a driving device 16 with a bearing 15 as a supporting point, and set to the angle corresponding to the flange size of the wide flange beam 1. When the wide flange beam 1 is carried on the carriage line 5, the water fed from a cooling water buffer 20 to each conduit tube 13 is sprayed from a nozzle 14 to cool flanges 3, 3 from each side of the wide flange beam 1. When the size of the wide flange beam 1 is changed, the conduit tube 13 is turned upward or downward by the driving device 16 without stopping the manufacturing line to the flange size, and set to the prescribed angle.

6. 发明专利

JPH0910819A METHOD AND DEVICE FOR COOLING WIDE FLANGE SHAPE 失效
公开(公告)号：JPH0910819A
公开(公告)日：1997-01-14
申请号：JP15573895
申请日：1995-06-22
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO
IPC分类号： B21B45/02 , C21D9/00
摘要： PURPOSE: To provide a method and device for cooling a wide flange shape, by which the respective cooling of the inside surface of the lower part of a flange and the under surface of a web can be controlled without replacing a cooling device even when each size of flange width, flange height, flange thickness and web thickness of the wide flange shape is changed when cooling the lower part of the inside surface of the wide flange shape. CONSTITUTION: This device is equipped with the rear surface cooling device for a wide flange shape, which is composed of one or two header tubes 11a and 11b on which nozzles 13 with variable jetting angles of cooling water are provided, which are installed perpendicular to transfer rollers 8 under the transfer rollers 8 of the wide flange shape 1. By setting the jetting angles of the nozzles 13 so that cooling speed and cooling completion temperature of each part become almost equal corresponding to the flange thickness tf and web thickness tw of the wide flange shape 1, and by adjusting a water quantity to be supplied to the inside surface 6 of the lower part of a flange and the rear surface 3 of a web, a cooling quantity is controlled.

7. 发明专利

JPH08257621A DEVICE FOR COOLING WIDE FLANGE SHAPED STEEL 失效
公开(公告)号：JPH08257621A
公开(公告)日：1996-10-08
申请号：JP6543995
申请日：1995-03-24
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO
IPC分类号： B21B39/14 , B21B43/00 , B21B45/02 , C21D9/00
摘要： PURPOSE: To provide a cooling device for wide flange shaped steel, capable of always keeping the distance between the cooling device and the surface to be cooled constant even in the case where the size of the wide flange shaped steel is changed or in the case where the wide flange shaped steel has bending at the right and left side or the upper and lower part. CONSTITUTION: This device is provided with a guide device 2 composed of one pair of guide members 3a, 3b connected with a right and left side restoring means 5 and an upper and lower part restoring means 10 and inserted between a web 1b and flanges 1a, 1a of the wide flange shaped steel 1 and the cooling device 20 followed to this guide device 2 and positional-controlled with the guide device 2.

8. 发明专利

JP2003112216A METHOD FOR COOLING STEEL PLATE 审中-公开
公开(公告)号：JP2003112216A
公开(公告)日：2003-04-15
申请号：JP2001308647
申请日：2001-10-04
申请人： NIPPON KOKAN KK
发明人： KONDO RYUICHI , TAKANE AKIRA , NAKASEKO MAKOTO
IPC分类号： B21B45/02 , B21B37/00 , B21B37/76 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling method of a steel plate by which the improvement in the accuracy of water cooling completing temperature and the reduction of the ununiformity of temperature on the sheet are enabled by suppressing local cooling by residual cooling water which remains on the upper surface after completing water cooling when cooling a high-temperature steel plate to the target temperature by using cooling water. SOLUTION: The steel plate 5 which is rough rolled with a roughing mill 2 is moved on a rolling line 1 toward a water-cooling system 4, water-cooling conditions are decided with a water-cooling controller 12 on the basis of temperature before starting water-cooling measured with thermometer 10 and the target cooling temperature or the like and cooling water is jetted toward the steel plate 5 from the water-cooling device 4 according to the water-cooling conditions. After stopping the jet of the cooling water, immediately, air is simultaneously jetted toward the upper surface of the steel plate 5 from the edge side of one side of the steel plate 5 from a dewatering nozzle group and the residual cooling water which remains on the steel plate 5 is removed from the upper surface of the steel plate 5. The temperature of the steel plate after water-cooling is measured with a thermometer 11A and it is confirmed that the water- cooling completing temperature is the target cooling temperature.

9. 发明专利

JP2002224732A DEVICE FOR COOLING FLANGE OF WIDE FLANGE BEAM 失效
公开(公告)号：JP2002224732A
公开(公告)日：2002-08-13
申请号：JP2001021348
申请日：2001-01-30
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO , NAKASEKO MAKOTO , ARIMURA TSURUWA
IPC分类号： B21B45/02 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling device which can apply stable accelerated cooling over the whole flange surface, even when a flange comes to touch a side guide caused by camber generated in a wide flange beam. SOLUTION: In a flange cooling device for the wide flange beam which, to cool the flange 2, jets cooling water on the outside flange surface 10as of the wide flange beam from multiple jetting holes 12 installed on the side guide 10 after finish rolling, the flange cooling device is equipped with caved grooves 11a outside the jetting holes 12 along the longitudinal direction of the side guide 10.

10. 发明专利

JP2002011514A METHOD AND DEVICE FOR COOLING SHAPE STEEL 失效
公开(公告)号：JP2002011514A
公开(公告)日：2002-01-15
申请号：JP2000192942
申请日：2000-06-27
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO , FUJII YUKIO , MAKINOHARA MISAO , ARIMURA TSURUWA
IPC分类号： B21B45/02 , C21D1/00 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a method and device for cooling shape steel by which accelerated cooling is performed uniformly from the outside surfaces of flanges of the shapes in order to manufacture the shape steel having high strength and high toughness at a low cost. SOLUTION: Cooling water of the jet pressure whose jet ratio of the jet quantity of a water-cooling header at the height of the uppermost face for cooling the shapes to the jet quantity of the cooling water which is jetted from the lowermost face of the water-cooling header 2 is >=80% is supplied to the water-cooling header 2.

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