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1. 发明专利

JPH10236425A CRADLE ROLL 失效
公开(公告)号：JPH10236425A
公开(公告)日：1998-09-08
申请号：JP3895597
申请日：1997-02-24
申请人： NIPPON STEEL CORP
发明人： SUZUKI SANAE
IPC分类号： B65B25/14 , B65B27/06
摘要： PROBLEM TO BE SOLVED: To prevent wrinkles and unevenness from occurring at a position corresponding to a hoop insertion groove when extremely thin coil-like metal belts are bound without using a hoop by building an air bag tube equipped with a segment on an outer face into the hoop insertion groove of a cradle roll. SOLUTION: An air bag tube 10 equipped with a segment 9 on an outer face is placed in a hoop insertion groove 3 of the cradle roll 1. When normal coil-like metal belts 2 are to be bound by using a hoop 4, air in the air bag tube 10 is exhausted, and the hoop 4 is inserted into a slit reserved between the segment 9 and the coil-like metal belt coil 2 for binding the coil-like metal belts 2. When extremely thin coil-like metal belts 2 with a thickness less than 0.2mm for example are to be bound without using the hoop 4, compressed air is led into the air bag tube 10 so that an outer face of the segment 9 may be aligned with an outer face of the cradle roll 1, and tail ends 17 of the coils are bound using adhesive paper 5.

2. 发明专利

JPH03291105A ON-LINE SAMPLING METHOD IN HOT ROLLING 失效
公开(公告)号：JPH03291105A
公开(公告)日：1991-12-20
申请号：JP8960190
申请日：1990-04-04
申请人： NIPPON STEEL CORP
发明人： WATABE YOSHIYUKI , NISHIOKA KIYOSHI , TAMEHIRO HIROSHI , MURAI YOSHIO , SHIMOMURA SHINICHI , SUZUKI SANAE
IPC分类号： B23K10/00 , B21B15/00
摘要： PURPOSE:To easily make possible the structure freeze over the whole of thickness and structure observation by rolling by cutting out a part of steel sheet at high speed on an actual line in the process of rolling or just after rolling. CONSTITUTION:It is necessary to rapidly cool the steel sheet immediately after rolling for structure freeze and a part of steel sheet is subjected so as to be cut out from the viewpoint of the securance of cooling speed and yield. The structure just after rolling is changed by recovery, recrystallization and transformation with the lapse of time and it is necessary to cut and cool the steel sheet as rapidly as possible after rolling to find structure variation by rolling. For the purpose, the cut part of the steel sheet is cooled also from the cut face as well as the surface and rear at the time of rapid cooling and the structure freeze is made easy in principle over the whole of sheet as well as in the vicinity of the surface and rear. Therefore, the structure freeze is easily performed by rapid cooling after cutting and the structure observation just after rolling can be easily done.

3. 发明专利

JPH08269653A PRODUCTION OF LANCE NOZZLE FOR CONVERTER BLOWING 失效
公开(公告)号：JPH08269653A
公开(公告)日：1996-10-15
申请号：JP9425495
申请日：1995-03-29
申请人： NIPPON STEEL CORP
发明人： YAMAJI CHIHIRO , ASO TOSHIRO , OYABU KENJI , SUZUKI SANAE , TAKEUCHI KOJI
IPC分类号： B22D29/00 , C21C5/46 , C22F1/00 , C22F1/08
摘要： PURPOSE: To impart the strength capable of withstanding the repetitive thermal deformation under high-temp. use as a lance by casting a lance nozzle having plural blow-off holes for blowing oxygen and cooling water paths by using a copper alloy, then subjecting this lance nozzle to a high-temp. isotropic pressure treatment at a temp. near the softening point of the alloy, thereby annihilating the internal defects, such as gaps. CONSTITUTION: The lance nozzle casting obtd. by casting the copper alloy is subjected to the high-temp. isotropic pressure treatment for one to three hours at 800 to 1000 deg.C and under a pressurizing force of 100 to 2000kg/cm . The lance nozzle casting is thereafter finished by machining. The high-temp. isotropic pressure treatment is preferably executed by a hot isotropic pressurization method (HIP) by using gaseous argon as a medium. The strength and thermal conductivity near the surface of the casting are improved by about 20% and the resistance to the thermal deformation is greatly improved as well by this treatment. The copper alloy incorporated with at least one kind selected from Zn, Pb, Sn, Si, Al, Fe and Mn is preferable as the copper alloy to be used.

4. 发明专利

JPH08239712A LANCE NOZZLE FOR BLOWING OF CONVERTER 失效
公开(公告)号：JPH08239712A
公开(公告)日：1996-09-17
申请号：JP4069895
申请日：1995-02-28
申请人： NIPPON STEEL CORP
发明人： SUZUKI SANAE , TAKEUCHI KOJI
IPC分类号： C21C5/46 , C22C29/08 , C22C32/00
摘要： PURPOSE: To improve heat resistance, wear resistance and heat conductivity, and to follow thermal expansion by fitting a sleeve made of Cu-WC alloy in an oxygen nozzle, in a lance nozzle in converter for blowing having a triple tube structure. CONSTITUTION: In a lance nozzle of triple tube structure, a plurality of cooling water introducing ports are arranged along the outer circumferential surface of the tip part of an oxygen nozzle 1, and a cooling water introducing port 8 to a heat receiving surface 4 is arranged to enhance the cooling around the oxygen nozzle 1 and of its heat receiving surface 4. A lance sleeve 7 made of Cu-WC alloy is fitted to the inner side 11 of the oxygen nozzle 1 by using the lance nozzle of three tube structure, and both ends of the sleeve 7 are welded and fixed to the base metal 12 of the lance. Because the Cu-WC alloy which is provided with the heat conductivity sufficient for the welding and excellent in the heat resistance and wear resistance is fitted to the inner side of the oxygen nozzle 1, the sleeve is not peeled therefrom, the fixing is sufficiently secured, and the service life can be improved.

5. 发明专利

JP2000027873A BEARING BOX FOR HOT CARRYING TABLE 失效
公开(公告)号：JP2000027873A
公开(公告)日：2000-01-25
申请号：JP20709398
申请日：1998-07-08
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI HIDENARI , SUZUKI SANAE
IPC分类号： F16C33/76 , F16C13/02 , F16C33/66
摘要： PROBLEM TO BE SOLVED: To suppress the penetration of water into a bearing box and prevent the failure of a bearing by providing a drip plate for water penetrating into the roll end inner part on the roll side of the bearing box. SOLUTION: A roll 1 is supported on a bearing 3, and the bearing 3 is fixed by a bearing box 4. The grease supplied through a greasing port 6 in order to lubricate the bearing 3 is discharged through a seal 5. At this time, drip plate 7 for water penetrating into the end of the roll 1 is provided on the roll 1 side of the bearing box 4 to prevent the seal 5 of the bearing box 4 from being directly exposed to water. According to this structure, the penetration of water into the bearing box 4 can be prevented to reduce the bearing failure. Preferably, a regularly opened degreasing pipe 8 for greasing work confirmation is provided so as not to fill the inner part of the drip plate 7 with the grease leaked from the seal 5, and the outlet of the degreasing pipe 8 is set downward. Thus, the greasing work can be confirmed without filling a large quantity of grease in the drip plate 7, and the using quantity of grease can be reduced.

6. 发明专利

JPH08199211A COOLING DISK IN BLAST FURNACE 失效
公开(公告)号：JPH08199211A
公开(公告)日：1996-08-06
申请号：JP2771295
申请日：1995-01-25
申请人： NIPPON STEEL CORP
发明人： MATSUI KAZUHIKO , TAKAHASHI TAKASHI , SUZUKI SANAE
IPC分类号： C21B7/10
摘要： PURPOSE: To arrange a blast furnace-cooling disks capable of blocking back blasting and preventing the damage of a stave coolers and the deformation of a furnace shell. CONSTITUTION: The cooling disks 3a of wide and thick type shape are arranged and the damage of the stave coolers 2 and the deformation of the furnace shell 1 are prevented by blocking the back blasting 9 to the back surfaces of the stave coolers 2 not by refractory 4 but by metallic material of the cooling disks 3a, etc.

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