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91. 发明专利

JPH0820813A METHOD OF BLOWING OPERATION AND APPARATUS THEREFOR 失效
公开(公告)号：JPH0820813A
公开(公告)日：1996-01-23
申请号：JP15396794
申请日：1994-07-05
申请人： SUMITOMO METAL IND
发明人： ISHIDA HIROAKI , HANAZAKI KAZUHARU , UJISAWA MASARU , MORI TOSHIHIRO
IPC分类号： C21C5/30
摘要： PURPOSE:To provide a method of blowing operation, by which the blowing efficiency is not lowered even in the blowing at high speed and the development of slopping can be restrained, and to obtain an apparatus therefor. CONSTITUTION:Molten metal 11 is charged into a converter 1 and heated while introducing oxygen of a prescribed rate from a top-blowing lance 5 and bottom- blowing tuyeres 3. A still picture of a furnace opening part 2 photographed by a CCD camera 8 at each one sec. is transmitted to a picture processing part 9. The picture processing part 9 recognizes a brightness and darkness pattern of the inputted still picture and measures the number of drips Sp per the cross-sectional area of the furnace opening part and obtains the accumulating totals of the numbers of drips SP10 of the ten figures and gives it to a supplying indication part 10. The supplying indication part 10 decides the point of a peak time from the inputted accumulating totals of the numbers of drips Sp10 7 and gives the indication for supplying a killing agent to a hopper 7. The killing agent is charged into the converter 1 from the hopper 7 to restrain slopping.

92. 发明专利

JPH06269833A CARRIER DEVICE FOR METAL STRIP IN HOT ROLLING STAGE 失效
公开(公告)号：JPH06269833A
公开(公告)日：1994-09-27
申请号：JP6431593
申请日：1993-03-23
申请人： SUMITOMO METAL IND
发明人： SAKAMOTO KOICHI , MORI TOSHIHIRO
IPC分类号： B21B39/12
摘要： PURPOSE:To manufacture a steel strip uniform in quality by providing a attracting device to attract a metal strip transferred by table rollers as it is moved synchronously and a cooling device for the metal strip in combination. CONSTITUTION:The metal strip 13 is transferred by a group of table rollers 9 in the down stream of a finishing mill 10. The attracting device 1 is equipped above the metal strip 13, a function moving it synchronously with the metal strip 13 and a function returning it to the original position are given to the device 1 and an electromagnet 14 attracting the front end part and/or the rear end part of the metal strip is prepared. Further, on the upstream stage of a moving area of the attracting device 1, spray nozzles 5 of the cooling device of the metal strip 13 are provided in combination. At least, the surfaces of the front end part and the rear end part of the metal strip 13 are cooled below the magnetic transformation point to improve the strip metal attracting property of an electromagnet 14. In this way, variation of a sheet width caused by the variation of tension can be refrained.

93. 发明专利

JPH06137333A ROLLER BEARING HOLDER 失效
公开(公告)号：JPH06137333A
公开(公告)日：1994-05-17
申请号：JP29332192
申请日：1992-10-30
申请人： NIPPON SEIKO KK , SUMITOMO METAL IND
发明人： TANAKA HIROSHI , NIIZEKI SHIN , NONAKA KOSUKE , MATSUDA YUKIO , MORI TOSHIHIRO , NOJIMA KATSUHIRO
IPC分类号： F16C33/44 , F16C33/56
摘要： PURPOSE:To provide a roller bearing holder by which abrasion or separation or a crack or the like is not caused even if it is used in a high temperature and/or corrosive environment such as a fused zinc bath or the like. CONSTITUTION:A base material of a holder 5 of a bearing 1 having an inner ring 2, an outer ring 3 and a rolling body 4 is formed of transition metal having corrosion resistance to fused zinc and a thermal expansion coefficient close to a ceramics material and heat resistance, and an abrasion resistant material 9 composed of a ceramics material is formed discontinuously on a sliding surface of the holder. Thereby, even if a holder 5 incorporated ceramic roller bearing is exposed in a high temperature and/or highly corrosive environment such as a fused zinc bath, separation or a crack of the abrasion resistant material 9 of the holder can be prevented.

94. 发明专利

JPH03126807A METHOD FOR MAINTAINING METALLURGICAL VESSEL AND OPENING HOLE THEREOF AND DEVICE FOR USING TO THESE 失效
公开(公告)号：JPH03126807A
公开(公告)日：1991-05-30
申请号：JP26581989
申请日：1989-10-12
申请人： SUMITOMO METAL IND
发明人： MORI TOSHIHIRO , YAMADA TSUNEO , KAJIWARA KOJI , IKEMIYA HIROYUKI , ISHIDA HIROAKI
IPC分类号： C21C5/42
摘要： PURPOSE:To secure automation and safely of steel tapping operation of a metallurgical vessel and maintenance operation after steel tapping by arranging a molten metal discharging hole having the prescribed angle to vertical axis of the furnace at the bottom part of the melting furnace of the refining furnace. CONSTITUTION:The molten metal discharging hole 2 is arranged upward with the prescribed angle at the part from corner part of the furnace bottom to the furnace belly part in a converter 1. This molten metal discharging hole 2 is opened by breaking through packing layer formed by sintering therein with operation of a remote controlling mechanical device. Further, after discharging the molten metal, the inner face of molten metal discharging hole 2 is prepared with the operation of the remote controlling mechanical device. The above hole opening device 3 has such constitution that a pushing rod 10 for opening hole fitted to a supporting lever 12 is worked in advancing/retreating directions with an air cylinder 13. Further, the above preparing device 4 has such constitution that rotation and percussion force and given with a drifter 16 moving to advancing/retreating direction to a bit 14 having a little smaller diameter than that of the molten metal discharging hole 2 fitted to a road 15 through a guide cell 17. Further, it is desirable that these devices 3, 4 are fitted to a traversing carriage 7 under assembling and traversely shifted and faced to the above discharging hole 2.

95. 发明专利

JPH03111506A PRODUCTION OF LOW-HYDROGEN MOLTEN PIG IRON 失效
公开(公告)号：JPH03111506A
公开(公告)日：1991-05-13
申请号：JP24840889
申请日：1989-09-25
申请人： SUMITOMO METAL IND
发明人： ISHIDA HIROAKI , YAMAMOTO TAKAIKU , MORI TOSHIHIRO
IPC分类号： C21B11/02
摘要： PURPOSE:To easily produce a molten pig iron reduced in hydrogen content by using pure oxygen as a combustion supporting gas to be blown through tuyeres and also using, as a gas for cooling the tuyeres, CO2, Ar, H2, hydrocarbon, etc., in which hydrogen content is controlled. CONSTITUTION:A molten low hydrogen pig iron is produced by using a cylindrical furnace and combining scraps with iron ores. At this time, pure oxygen is used as a combustion supporting gas to be blown through a primary tuyere and a secondary tuyere. As a gas for cooling the tuyeres, CO2, Ar, H2, and hydrocarbon gases are used independently or in combination in the form of gaseous mixture, and further, hydrogen content in the whole cooling gas is controlled to

96. 发明专利

JPH0347906A PRODUCTION OF LOW SULFUR IRON 失效
公开(公告)号：JPH0347906A
公开(公告)日：1991-02-28
申请号：JP18139789
申请日：1989-07-13
申请人： SUMITOMO METAL IND
发明人： ISHIDA HIROAKI , YAMAMOTO TAKAIKU , MORI TOSHIHIRO
IPC分类号： C21B11/02
摘要： PURPOSE:To easily produce molten iron having a little sulfur content by forming coke packing layer and scrap and iron ore packing layer in a cylindrical furnace in order, blowing combustion supporting gas from a tuyere to produce the molten iron and blowing CaO powder to this. CONSTITUTION:In the cylindrical furnace 1 having opening part 2 at furnace upper part and primary tuyeres 3, 3', slag tapping hole 10 and iron tapping hole 5 at furnace bottom part and lower furnace wall and secondary tuyere 14 at upper furnace wall, the coke packing layer 7 is formed from the furnace bottom to level including the primary tuyere 3 and at the upper part thereof, the packing layer 8 consists of essentially the scrap and iron ore is formed to level including the secondary tuyere 4. Successively, by blowing the combustion supporting gas from the primary tuyere 3 and secondary tuyere 4, the molten iron 9 is produced and the powder consists of essentially CaO is blown into the molten iron 9 from the tuyere 3' with inert gas as carrier gas and stirred to execute desulfurization. By this method, the molten iron 9 having low sulfur content is obtd. With the cylindrical furnace 1 having comparatively simple construction.

97. 发明专利

JPH0318408A COOLING DEVICE FOR ROLLING ROLL 失效
公开(公告)号：JPH0318408A
公开(公告)日：1991-01-28
申请号：JP15104989
申请日：1989-06-13
申请人： SUMITOMO METAL IND
发明人： TAKAHASHI TSUTOMU , OKITA YOSHIYUKI , MORI TOSHIHIRO
IPC分类号： B21B27/10
摘要： PURPOSE:To efficiently cool rolling rolls and to cool without the change of cooling capacity even if the diameter is changed due to roll grinding, etc., by sealing cooling water by abuting a water-cooled jacket on water feeding and drain passages and the rolling rolls and injecting plural pressurized water on the opposed face of the rolling rolls. CONSTITUTION:When the rolling rolls 10 are cooled with a cooling devices 1, cooling water 11 is fed from the water feeding passages 5 for cooling water. Cooling water 1 is drained off from the drain passages 6 for cooling water after cooling the rolls 10 through the passage 4 for cooling water which is formed of the surface of rolling roll and inside surface of the water-cooled jacket. At that time, because boundary layer 12 where heat transfer is obstructed is produced on the surface of the rolling rolls, pressurized water 13 is injected from injection nozzles 7 there. Thereby, the boundary layer 12 which is produced on the surface of the rolls is broken with pressurized water 13. As that result, it is possible that the rolling rolls 10 and cooling water 11 are brought into direct contact with each other and cooling effect can be considerably improved.

98. 发明专利

JPH02147113A HEAT INSULATING COVER FOR HIGH TEMPERATURE STEEL 失效
公开(公告)号：JPH02147113A
公开(公告)日：1990-06-06
申请号：JP30187888
申请日：1988-11-29
申请人： SUMITOMO METAL IND
发明人： MORI TOSHIHIRO , OKITA YOSHIYUKI
IPC分类号： B21B39/00 , B21B45/00
摘要： PURPOSE:To perform energy-saving production for high quality steel by mounting a heat retaining material layer for preventing radiation whose inside is coated with a ceramic plate or a heat insulating steel plate on the inside of a gate body frame straddling a roll table. CONSTITUTION:When the inside of the heat retaining material 13 for preventing radiation (ceramic fiber, etc.) is coated with a ceramic plate 12 or heat resistant steel plate, moisture absorption of the heat retaining material can be prevented, consequently, its deterioration and embrittlement are restrained, the reduction of the heat retaining performance and the partial separation of the heat retaining material are prevented. Covering with a ceramic plate is recommended from the side of heat resistance, some ceramic plate is high in heat resistance and does not generate cracks though it is heated in high temperature and then dipped into water and does not undergo thermal change though it is put in cooling water. Besides, it does not absorb moisture and, further, has a characteristic as heat retaining material in itself. However, combination of small blocks is desired to be applied to avoid the influence of thermal strain, etc.

99. 发明专利

JPH02107711A METHOD FOR BURNING GASEOUS CO IN REFINING VESSEL 失效
公开(公告)号：JPH02107711A
公开(公告)日：1990-04-19
申请号：JP26100888
申请日：1988-10-17
申请人： SUMITOMO METAL IND
发明人： ISHIKAWA MINORU , ANEZAKI MASAHARU , ISHIDA HIROAKI , KAWAMOTO MASAYUKI , MORI TOSHIHIRO
IPC分类号： C21C5/30
摘要： PURPOSE:To raise the secondary combustion rate of exhaust gas and to refine molten iron into molten steel with high heat efficiency by blowing in gaseous oxygen for secondarily burning the CO in exhaust gas along with a nonreducing powdery coolant in addition to the decarburizing gaseous oxygen at the time of refining molten iron into molten steel by oxygen blowing. CONSTITUTION:When molten iron 14 is refined into molten steel in a top and bottom-blown converter 10 by oxidation decarburization using oxygen, gaseous O2 is blown against the surface of the molten iron 14 from an oxygen top- blowing lance 11. The CO contained in the exhaust gas generated in the oxidation decarburization is secondarily burned, and the molten iron 14 is heated by the produced heat to improve the heat efficiency. In this case, nonreducing particulate matter such as iron ore, chromium ore, manganese ore, and limestone is blown as a coolant into the converter 10 from a horizontal tuyere 12 or an inclined tuyere 13 along with gaseous O2 to lower the temp. of the secondary- combustion flame, hence the reduction of the CO2 in the combustion gas by the C and Fe in the molten iron 14 is prevented, CO combustion is promoted, and the heat efficiency of the converter is improved.

100. 发明专利

JPS62235406A METHOD AND APPARATUS FOR RECOVERING HEAT ENERGY OF EXHAUST GAS FROM CONVERTER 失效
公开(公告)号：JPS62235406A
公开(公告)日：1987-10-15
申请号：JP7640186
申请日：1986-04-02
申请人： SUMITOMO METAL IND
发明人： TAKAHASHI TSUTOMU , TATENO MASAKI , MORI TOSHIHIRO
IPC分类号： C21C5/38
摘要： PURPOSE:To obtain expensive quick lime from limestone by placing a U-shaped duct in an exhaust gas recovering system on a converter, charging limestone granules into the duct and vibrating the granules during refining by blowing so that the granules are effectively brought into contact with exhaust gas. CONSTITUTION:A U-shaped duct 4 is placed in an exhaust gas recovering system 2 on a converter 1. Limestone granules are charged into the bottom of the duct 4 from a charge hole 6 and calcined with exhaust gas from the converter 1 to produce quick lime. During refining by blowing, the limestone granules on the bottom of the duct 4 are vibrated by vibrating a heat exchange bed 5 with a vibrator so that the granules are effectively brought into contact with exhaust gas. During the suspension of blowing, vibration is stopped to prevent the cooling of the limestone granules. The produced quick lime is discharged from a discharge part 7.

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