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公开(公告)号：JP2001181720A
公开(公告)日：2001-07-03
申请号：JP37213099
申请日：1999-12-28
申请人： KOBE STEEL LTD
发明人： INABA SHINICHI
摘要： PROBLEM TO BE SOLVED: To provide a method, with which the productivity can be improved with a simple means, in a method of manufacturing a reduced iron with a rotary hearth furnace. SOLUTION: A means 4 for heating the furnace hearth surface, is arranged at the interval from the rear side of a position 2 discharging the reduced iron to a position 9 charging raw material composed of powdery iron oxide and powdery carbonaceous material, and the temperature of the furnace hearth surface at the position 9 charging the raw material is regulated to >=600 deg.C and further, desirably >=850 deg.C.
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公开(公告)号：JP2001121258A
公开(公告)日：2001-05-08
申请号：JP33832599
申请日：1999-10-25
申请人： TODA KEISUKE
发明人： TODA KEISUKE
摘要： PROBLEM TO BE SOLVED: To uniformize the heating temperature of a gold or a gold alloy-made chain ring butting part and to electrically realize the high temperature for heating-brazing a platinum or a platinum alloy-made chain ring butting part in high accuracy. SOLUTION: This apparatus disposes a transportating device for continuously or intermittently shifting partially in the vertical direction of a long chain to be heated having powdery brazing filler metal for joining near the butting position of the noble metal-made chain ring, a tunnel type preheating furnace provided with a resistance heating exothermic body disposing a temperature detector for controlling the temperature of a preheating tube and inside of this tube where the chain to be heated passes, a tunnel type heating furnace provided with a resistance heating exothermic body disposing a temperature detector for controlling the temperature of a furnace core tube and inside of the furnace core tube where the chain to be heated passes in succession to the preheating furnace, a gas introducing member for introducing the atmospheric gas into the furnace core tube continuously penetrated from the preheating furnace to the outlet of the heating furnace, and a rapid cooling device arranged corresponding to the shifting path in the transporting device and holding the coolant for rapidly cooling the chain heated in the heating furnace in succession to the heating furnace.
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公开(公告)号：JPH11193422A
公开(公告)日：1999-07-21
申请号：JP28911798
申请日：1998-10-12
申请人： STEIN HEURTEY
发明人： JODET GERARD
摘要： PROBLEM TO BE SOLVED: To connect a fan to a generator not to disturb the appropriate operation of the fan by preventing the atmospheric gas from passing through a heat exchanger when the corrugated part of a compensator is damged and obviating the excessively rapid cooling of the atmospheric gas. SOLUTION: The main flow zone A of a cooling gas includes a resistor 34 disposed on the upstream side of a heat exchanger 28, a bypass flow zone B is also furnished, and the resistors 36 and 36' are arranged in the bypass flow zone B. The resistors 34, and 36' are preferably controlled by a pneumatic actuator having an extremely short response time of
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公开(公告)号：JPH1183335A
公开(公告)日：1999-03-26
申请号：JP23795997
申请日：1997-09-03
申请人： NIPPON STEEL CORP
摘要： PROBLEM TO BE SOLVED: To decrease temperature difference between temperature of a slab end face at a charge side and that of the slab end face at an extraction side within a specified temperature by installing a radiation shielding heat resistant material on a lower furnace wall at an extraction side of a walking beam type heating furnace. SOLUTION: Radiation extraction heat quantity of a slab end face at an extraction side of a heating furnace to an extraction side furnace wall is larger than that of the slab end face at a charge side to the extraction side and temperature decrease at the slab end face at the extraction side starts earlier, and magnitude of the temperature decrease becomes large, and therefore, a radiation shielding wall 7 using a radiation shielding heat resistant material of a shape corresponding to a lower furnace wall 3 is erected at a position in proximity to an inner face side of the lower furnace wall 3 at the extraction side of the heating furnace. Furthermore, a fiber thermal insulation material 8 is stuck as a radiation shielding on an upper side wall 3' at the extraction side. By such a constitution, temperature difference between temperature of the slab end face at the charge side and that of the slab end face at the extraction side is decreased within 5 C.
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公开(公告)号：JP2772699B2
公开(公告)日：1998-07-02
申请号：JP5579890
申请日：1990-03-07
发明人： KATO TAKEO , NAKATSUKA ATSUSHI , NONAKA MASARU
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公开(公告)号：JPH09249426A
公开(公告)日：1997-09-22
申请号：JP5619296
申请日：1996-03-13
申请人： HITACHI TECHNO ENG
发明人： IMAIZUMI KIYOSHI , SANKAI HARUO
摘要： PROBLEM TO BE SOLVED: To provide a heating furnace which can uniformly heat-harden the paste coated on the surfaces of the base plate, can produce base plates of high quality with its installation area reduced. SOLUTION: A glass base plate 12 coated with a sealing agent is conveyed in from the opening 9 between partition walls and placed on the lifting pins 15. These lifting pins 15 allows the base plate 12 to go down near the hot plate 16 and the base plate is preheated with infrared rays of the radiation from the heated plate 16, further, passing through the base plate and reflected with the mirror face on the inside surface of the partition wall 8. Then, the lifting pins further go down and the base plate 12 is vacuum-adhered onto the hot plate 16 and mainly heated with the hot plate 16. Then, the lifting pins rise up to the original position of the base plate 12. There, a nitrogen gas is blown from the nozzles of the air-feeding tubes 23 to the surface of the base plate to accelerate the cooling of the base plate. After cooling, the base plate 12 is taken out of the opening 9.
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公开(公告)号：JP2543565B2
公开(公告)日：1996-10-16
申请号：JP7644588
申请日：1988-03-31
申请人： NGK INSULATORS LTD
发明人： YASUDA KEIJI , OGURA HIROHARU , MYAHARA KAZUHIRO
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公开(公告)号：JPH07190627A
公开(公告)日：1995-07-28
申请号：JP33346593
申请日：1993-12-27
申请人： TOTO LTD
发明人： OGATA MASAHIRO , YAGAWA IZUMI
摘要： PURPOSE:To stabilize the setting of baking condition and improve the accuracy of baking by a method wherein the inflow of combustion gas from a baking zone into a cooling zone and the inflow of cooling air from the cooling zone into the baking zone are judged by an oxygen concentration, detected by an oxygen concentration detector provided in the shock absorbing zone of the cooling zone, to control forced ventilation air from a forced ventilation fan toward the baking zone. CONSTITUTION:An oxygen concentration detector 13 is arranged in a the side of shock absorbing zone 42, constituting the side of the baking zone 2 of a quick cooling section 4, to detect an oxygen concentration in a furnace. The detecting signal thereof is sent into an oxygen concentration measuring instrument 14 to compare the oxygen concentration with a set value. When the measured value has become lower than the set value, a signal is transmitted from the oxygen concentration measuring instrument 14 into the number of rotation controller of a forced ventilation fan 21 to increase the number of rotation of the forced ventilation fan 21 and increase the inside pressure of the cooling zone 3, thereby precluding the inflow of combustion gas into the cooling zone 3. On the contrary, when the measured value has become higher than the set value, the number of rotations of the forced ventilation fan 21 is reduced.
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