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71. 发明专利

JP2002327918A METHOD FOR CONTROLLING PRESSURE OF PARENTAGE DAMPER 失效
公开(公告)号：JP2002327918A
公开(公告)日：2002-11-15
申请号：JP2001131873
申请日：2001-04-27
申请人： NIPPON STEEL CORP
发明人： HARADA SHINTARO
IPC分类号： F23L17/16 , C21D1/52 , F23L17/00 , F27D17/00 , F27D19/00 , G05B11/36 , G05D16/20
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling a parent-child damper formed that proper responsiveness is obtained even when any range of a damper is used. SOLUTION: A method for controlling the pressure of a parent-child damper is that a parent-child damper is used in control of a pressure of combustion exhaust gas or combustion air and a damper opening command is outputted to the parentage damper through PID control. Based on a pressure drop amount at the parentage damper calculated based on damper Cv value characteristics, a resistance factor inherent to a piping system, and blower performance, or a pressure drop amount at the parentage damper actually measured at real equipment, a change amount of a pressure drop per an unit operation amount of the parentage damper opening is calculated based on a pressure drop amount at the parentage damper calculated. A damper opening correction function converted such that a change amount of the pressure drop is uniformalized is previously determined. During operation, through the PID control, correction is applied on an opening command, outputted to the parentage damper, through the damper opening correction function.

72. 发明专利

JP3328456B2 失效
公开(公告)号：JP3328456B2
公开(公告)日：2002-09-24
申请号：JP810895
申请日：1995-01-23
IPC分类号： C21D1/00 , C21D1/52 , C21D9/00 , F23L15/02 , F27B9/10 , F27D17/00

73. 发明专利

JP2002266060A VERTICAL ALLOYING FURNACE AND OPERATION METHOD THEREFOR 失效
公开(公告)号：JP2002266060A
公开(公告)日：2002-09-18
申请号：JP2001062835
申请日：2001-03-07
申请人： NIPPON STEEL CORP
发明人： MIYAKE MASAYUKI , WAKABAYASHI HISATOSHI
IPC分类号： C23C2/00 , C21D1/34 , C21D1/52 , C21D9/56 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a vertical alloying furnace not causing the fluttering of steel plate while securing the sealing property even in the case of applying alloying treatment or no alloying treatment to a steel plate using the vertical alloying furnace. SOLUTION: In the vertical alloying furnace having a plating bath for applying plating on the steel plate and having, above the plating bath, a wiping nozzle for adjusting the coating weight of the steel plate drawn up from the plating bath, a touch roll, a heating zone, a holding zone and a cooling zone in this order, a pair of gas jetting boxes are provided to face each other across the steel plate in the middle stage part of the holding zone, another gas jetting box is provided above or below one of the pair of the gas jetting boxed, and further, a pair of gas jetting boxes are provided to face each other across the steel plate in the boundary part between the holding zone and cooling zone.

74. 发明专利

JP2002239601A METHOD FOR BLOOMING STEEL INGOT 失效
公开(公告)号：JP2002239601A
公开(公告)日：2002-08-27
申请号：JP2001043149
申请日：2001-02-20
申请人： DAIDO STEEL CO LTD
发明人： ISHIHAMA TATSUYA , FUJIMURA SADAHISA
IPC分类号： B21B1/02 , C21D1/52
摘要： PROBLEM TO BE SOLVED: To provide a blooming method of a steel ingot for improving yield and preventing the wastage of thermal energy. SOLUTION: The steel ingot is soaked in a horizontal position in a both upper side fired soaking pit provided with burners on both sides in the upper part, after the soaked steel ingot is rough rolled, finish rolling is performed after reheating the formed steel ingot which is rough rolled in an intermediate heating furnace.

75. 发明专利

JP3315493B2 失效
公开(公告)号：JP3315493B2
公开(公告)日：2002-08-19
申请号：JP25083893
申请日：1993-10-06
IPC分类号： F23D14/22 , C21D1/52 , F23C99/00 , F23D14/32 , F23C11/00

76. 发明专利

JP2002213879A ATMOSPHERE CONTROL METHOD FOR HEATING FURNACE, AND THE HEATING FURNACE 失效
公开(公告)号：JP2002213879A
公开(公告)日：2002-07-31
申请号：JP2001008524
申请日：2001-01-17
申请人： KAWASAKI STEEL CO
发明人： SUGIMOTO ICHIRO , FURUKAWA AKIHIRO , KARIBE KENTA , ADACHI KAZUNARI
IPC分类号： C21D1/52 , C21D1/76 , F23N3/00 , F23N5/00 , F27B9/36 , F27B9/39 , F27D7/06
摘要： PROBLEM TO BE SOLVED: To provide a method wherein infiltration of air from the extraction door into a heating furnace is surely prevented from happening. SOLUTION: Upon opening the extraction door of the heating furnace, the control of combustion of a heating burner disposed in a lower zone of a furnace extraction end among a plurality of heating burners disposed in the heating furnace is made independently. Further, the frame of the burner is extended in the direction of the extraction outlet extending over the opening width of the extraction outlet, and an infiltration passage for air from the extraction passage is interrupted with the burner frame, to suppress the increase of oxygen concentration in the furnace.

77. 发明专利

JP3297741B2 失效
公开(公告)号：JP3297741B2
公开(公告)日：2002-07-02
申请号：JP27757389
申请日：1989-10-24
IPC分类号： C21D9/00 , C21D1/52 , C21D11/00

78. 发明专利

JP2002173708A HIGH SPEED HEATING-UP FURNACE 失效
公开(公告)号：JP2002173708A
公开(公告)日：2002-06-21
申请号：JP2000368562
申请日：2000-12-04
申请人： FURNESS JUKO KK
发明人： SAKAMOTO HIDESATO
IPC分类号： C21D1/34 , C21D1/52 , F27D7/04
摘要： PROBLEM TO BE SOLVED: To structurally improve heating-up efficiency to a work by eliminating any disturbing structure in hot blast circulating path in a furnace chamber. SOLUTION: In a high speed heating-up furnace for heating up the work W at high speed by coaxially disposing a cylindrical work holding chamber 3 in the furnace chamber 2 and forcibly convecting the hot blast generated with a burner B as eddy current with a circulating fan 4, a door 7 is arranged at a second work carrying port 35 in the work holding chamber 3. Then, the circulating path for uniformly circulating the hot blast over the whole circumference between the furnace chamber 2 and the work holding chamber 3, is secured by closing the door 7.

79. 发明专利

JP2002098489A HONEYCOMB STRUCTURAL BODY OF ALUMINA CONTAINING Na, MANUFACTURING METHOD THEREOF AND HONEYCOMB HEAT STORAGE BODY EMPLOYING THE SAME 失效
公开(公告)号：JP2002098489A
公开(公告)日：2002-04-05
申请号：JP2000291711
申请日：2000-09-26
申请人： NGK INSULATORS LTD , NIPPON KOKAN KK , NIPPON FURNACE KOGYO KK
发明人： KASAI YOSHIYUKI , UMEHARA KAZUHIKO , HARADA SETSU , MORI ISAO , NAGOSHI MASAYASU , TADA TAKESHI
IPC分类号： F23L15/02 , C04B35/10 , C09K5/08 , C21D1/00 , C21D1/52 , F27D17/00 , F28D17/02 , F28D20/00
摘要： PROBLEM TO BE SOLVED: To provide an alumina honeycomb structural body capable of effecting heat exchange efficiently, even under corrosive atmosphere, a manufacturing method of the same and a honeycomb heat storage body employing the same. SOLUTION: The alumina honeycomb structural body 1, containing Na, which comprises 98 wt.% or more of a principal constituent or alumina, 0.01-1.0 wt.% of amount of Na2O obtained by converting a compound containing Na into an oxide and a balance of impurities, is constituted. The alumina honeycomb structural body, containing Na of this invention is manufactured by a method, where 97-70 wt.% of α alumina, 3-30 wt.% of aluminum hydrate, necessary amount of sodium source, forming assistant and solvent are plasticized by mixing and is calcined after extrusion molding. Further, the honeycomb heat storage body of this invention is provided with at least one piece of the alumina honeycomb structural body containing Na and is constituted, so as to effect heat exchange by passing alternately heating gas and the gas to be heated.

80. 发明专利

JP3237345B2 失效
公开(公告)号：JP3237345B2
公开(公告)日：2001-12-10
申请号：JP26444293
申请日：1993-10-22
IPC分类号： F23C99/00 , C21D1/00 , C21D1/52 , C21D9/00 , F23L15/02 , F27B9/36 , F27D7/02 , F27D17/00

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