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1. 发明专利

JP2019002031A 処理炉审中-公开
公开(公告)号：JP2019002031A
公开(公告)日：2019-01-10
申请号：JP2017115230
申请日：2017-06-12
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： EGAMI TOSHIO , KADOTANI KATSUHIRO , ADACHI NORIAKI
IPC分类号： C21D9/56 , F27D7/06
摘要：【課題】組成の異なる雰囲気ガスが収容された第1処理部と第2処理部との間の連通部を通して鋼帯を移動させる場合に、鋼帯が傷ついたり、各処理部に収容された雰囲気ガスが連通部を通して移動したりするのを抑止する。【解決手段】組成の異なる雰囲気ガスが収容された第1処理部10と第2処理部20との間の連通部30を通して鋼帯1を移動させるにあたり、連通部を通して各雰囲気ガスが移動するのをシール部31において抑止するにあたり、連通部の雰囲気ガスを吹付け部312から鋼帯1に対して第1処理部から第2処理部に向けて吹き付けると共に、吹付け部よりも下流側の位置で雰囲気ガスを吸引する吸引部313との間で循環させ、シール部排気管315から排気させる雰囲気ガスの量や、シール部より第2処理部側の連通部内の雰囲気ガスを連通部排気管32から排気させる量を調整する。【選択図】図2

2. 发明专利

JP2003247787A WHITE POWDER REMOVING DEVICE IN CONTINUOUS ANNEALING FURNACE 审中-公开
公开(公告)号：JP2003247787A
公开(公告)日：2003-09-05
申请号：JP2002046339
申请日：2002-02-22
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： NAGAMURA AKIO , NAKAGAWA HIROO
IPC分类号： F27B9/04 , B01D46/30 , C21D6/00 , C21D9/56 , F27B9/30 , F27D7/06 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To remove white powder without suspending a furnace. SOLUTION: In this continuous annealing furnace 1, a furnace body 2 is provided with a heating zone 2a for heating a treatment agent 7, and a cooling zone 2c for cooling the treatment agent 7, and the treatment agent 7 is continuously transferred and annealed from the heating zone 2a to the cooling zone 2c under an atmosphere of atmosphere gas G. The atmosphere gas G is taken from the outlet side of the heating zone 2a via an atmosphere gas supply duct 22, supplied to a filter body 21 filled with filters 29, and passed through the filters 29, to remove white powder W in the atmosphere gas G. Thereafter, the atmosphere gas G is returned back to the inlet side of the cooling zone 2c by a fan 24 via an atmosphere gas return duct 23. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003247718A INTERLOCKING PROPORTIONAL CONTROL BURNER AND HEAT TREATMENT FURNACE 审中-公开
公开(公告)号：JP2003247718A
公开(公告)日：2003-09-05
申请号：JP2002047522
申请日：2002-02-25
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： IRIE HIROAKI , KIMOTO YASUYUKI
IPC分类号： F23N1/02
摘要： PROBLEM TO BE SOLVED: To provide an interlocking proportional control burner allowing the interlocking of a fuel flow control mechanism with a combustion air flow control mechanism with no backlash and less power loss and having improved workability. SOLUTION: The interlocking proportional control burner has the fuel flow control mechanism 32 and the combustion air flow control mechanism 33 in a burner body 31 and interlocking fixing means 3 for controlling the flow rate of fuel and the flow rate of combustion air by interlocking the fuel flow control mechanism 32 with the combustion air flow control mechanism 33 while keeping the ratio of the flow rate of combustion air to the flow rate of fuel as preset. It comprises rotation driving means 6 joined in an integrally rotatable manner to an input shaft 4 which interlocks the fuel flow control mechanism 32 with the combustion air flow control mechanism 33, via the interlocking fixing means 3, and having an output shaft 7 which is rotated in accordance with a control signal. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2003119558A METHOD FOR VACUUM CARBURIZING STEEL PART 审中-公开
公开(公告)号：JP2003119558A
公开(公告)日：2003-04-23
申请号：JP2001313884
申请日：2001-10-11
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： SHIMOZATO YOSHIKAZU , TANAKA KENICHI
IPC分类号： C23C8/22 , C21D1/06
摘要： PROBLEM TO BE SOLVED: To reduce consumption of expensive unsaturated hydrocarbon gas, and miniaturize a vacuum exhaust system, along with forming a uniform carburized layer. SOLUTION: In a method for vacuum carburizing steel parts in a reduced pressure, this carburizing method is characterized by carburizing the steel parts in the unsaturated hydrocarbon gas with a first predetermined reduced pressure, and then carburizing them in the saturated hydrocarbon gas with a second predetermined reduced pressure, in the carburizing stage.

5. 发明专利

JP2002324486A METHOD FOR DETECTING DEFECTIVE PANEL IN EXHAUST CART TYPE CONTINUOUS EXHAUST TREATMENT 失效
公开(公告)号：JP2002324486A
公开(公告)日：2002-11-08
申请号：JP2001129239
申请日：2001-04-26
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： KISODA KINYA
IPC分类号： H01J9/42 , C03B23/24 , H01J9/385 , H01J11/20 , H01J11/44 , H01J11/02
摘要： PROBLEM TO BE SOLVED: To provide a defective panel detecting method which can detect defective panels in an exhaust treatment and exhausts the other remaining panels, which prevents degradation in production efficiency in a continuous exhaust treatment of a plurality of hollow panels loaded on an exhaust cart. SOLUTION: In the process that a plurality of panels P2 are held in an exhaust cart 10 equipped with an exhaust means at least, and a tip tube Pa of each panel is connected to each exhaust head 18 in the exhaust cart, and the exhaust head 18 is individually connected to the exhaust means with an exhaust tube 19 having a shutoff valve 20 through an exhaust header 17 to implement the exhaust treatment while moving the exhaust cart in a furnace. If exhaust failures are detected in a plurality of panels, after all the shutoff valves of the panels are closed, the degree of vacuum in each panel is measured sequentially by opening and closing the shutoff valve of each panel. If the degree of vacuum of a panel is outside an allowable range, the panel is determined as defective.

6. 发明专利

JP2002318080A SUPPORTING OXYGEN FOR FUSION ELECTRIC ARC FURNACE.FUEL BURNER DEVICE AND ITS CONTROL METHOD 失效
公开(公告)号：JP2002318080A
公开(公告)日：2002-10-31
申请号：JP2001119727
申请日：2001-04-18
申请人： CHUGAI RO KOGYO KAISHA LTD , NIPPON STEEL CORP
发明人： FUJII KUNIO , UCHIDA SHINJIRO , TANABE KEIICHI
IPC分类号： F27B3/08 , F27B3/20 , F27D7/02
摘要： PROBLEM TO BE SOLVED: To provide a supporting oxygen for fusion.fuel burner device in an electric arc furnace being high in thermal efficiency and excellent in productivity. SOLUTION: A first feed pipe 17 having an opening 17a having a tip inner surface in a divergent shape with a given distance is disposed at the outer peripheral part of an oxygen feed pipe 13 for blowing having an opening, the tip inner surface of which is formed in a divergent shape, and a fuel flow passage 14 is formed between the oxygen feed pipe for blowing and the first feed pipe. Openings 18a having a tip inner surface in a divergent shape are situated at intervals of a given distance at the outer peripheral part of the first feed pipe. A second feed pipe 18a is provided at an internal part with a cooling water circulation flow passage 16 and an oxygen flow passage 15 for combustion is formed between the first and the second feed pipes. A supporting oxygen.fuel burner device 10 for fusion in an electric arc furnace T is formed that a burner body 11 where the tip parts of an oxygen feed pipe for blowing a fuel flow passage, and an oxygen flow passage for combustion are inclined at a given angle θ2 based on an axial direction is rotatably mounted with a given distance D from a furnace wall 1.

7. 发明专利

JP2002294332A WATER SEAL DEVICE OF WALKING BEAM TYPE HEATING FURNACE 失效
公开(公告)号：JP2002294332A
公开(公告)日：2002-10-09
申请号：JP2001096372
申请日：2001-03-29
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： IRIE HIROAKI , WATABE NOBUHIRO
IPC分类号： C21D1/00 , F27B9/24
摘要： PROBLEM TO BE SOLVED: To provide a water seal device of a walking beam type heating furnace, which is provided with a seal box without any damage in holes caused by corrosion and easy to repair. SOLUTION: In the water seal device T of the walking beam type heating furnace comprising the seal box which surrounds the entire periphery of an opening part 2 for a moving post provided on a hearth 1 and extended downwardly and a trough 6 provided on a moving frame 5 with a lower end of the seal box immersed therein, the seal box 10 comprises an upper seal box 10A formed of steel plate having holding members 13 with lower ends thereof immersed in water W in the trough on at least four corners, and a lower seal box 10B which is connected to the lower end of the upper seal box and formed of a heat resistant flexible sheet 15 with a lower end thereof immersed in water in the trough.

8. 发明专利

JP2002294331A METHOD FOR CHARGING STEEL SLAB IN HEATING FURNACE 失效
公开(公告)号：JP2002294331A
公开(公告)日：2002-10-09
申请号：JP2001100595
申请日：2001-03-30
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： NAKAI TATSUO , FUKUOKA NORITO
IPC分类号： C21D1/00 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a steel slab charging method for suppressing heat radiation loss and fluctuation of the in-furnace pressure, in particular, when hot slabs are heated in a heating furnace for heating cold slabs and hot slabs in the same heating furnace. SOLUTION: In this steel slab charging method, a charging device 13 having a steel slab carrying unit 14 is provided outside a charging port of the heating furnace T, an auxiliary door 5 which can be independently elevated/lowered is provided outside an elevating/lowering main door 3 capable of opening/closing the charging port when the steel slab is charged in the predetermined position in the furnace by this charging device, charging of the steel slab is started by elevating both doors, and the auxiliary door is lowered to close the charging port when the steel slab passes through the charging port. After the steel slab is charged in the predetermined position in the furnace, the steel slab carrying unit is retracted. When the steel slab carrying unit is retracted, the main door is lowered, and the charging port is closed.

9. 发明专利

JP2002249819A GAS COOLING METHOD OF METALLIC MATERIAL 失效
公开(公告)号：JP2002249819A
公开(公告)日：2002-09-06
申请号：JP2001046614
申请日：2001-02-22
申请人： CHUGAI RO KOGYO KAISHA LTD
发明人： KISODA KINYA
IPC分类号： C21D1/18 , G01R31/36
摘要： PROBLEM TO BE SOLVED: To provide a gas cooling method along a cooling curve by driving a motor for a cooling fan to get its maximum output while preventing burnout of the motor and driving the motor at the speed of revolution corresponding to the temperature of the metallic material. SOLUTION: In the gas cooling method of the metallic material in which the metallic material W heated to the hardening temperature is subjected to the forced convection cooling in the in-furnace atmosphere, the preset cooling curve is compared with the in-furnace atmospheric temperature or the in-furnace metallic material temperature, the speed of revolution of the motor M for driving the cooling fan is controlled based on the difference therebetween. When the output of the motor reaches the limit, the motor for driving the cooling fan is continuously rotated at the maximum output limit irrespective of the load fluctuation caused by the temperature change.

10. 发明专利

JP2002241754A MATERIAL FOR PROMOTING FLUIDIZATION OF GEOLOGIC MATERIAL AND GEOLOGIC MATERIAL COMPOSITE 失效
公开(公告)号：JP2002241754A
公开(公告)日：2002-08-28
申请号：JP2001042862
申请日：2001-02-20
申请人： HAZAMA GUMI , CHUGAI RO KOGYO KAISHA LTD
发明人： SASAKI HAJIME , TORAN DYUKU FUI OAN , TERATANI TOSHIAKI
IPC分类号： E02F7/00 , B09B3/00 , C09K17/02 , C09K103/00 , E02D3/12
摘要： PROBLEM TO BE SOLVED: To obtain an inexpensive geologic material fluidization-promoting material having high fluidization-promoting action and capable of applying to wide geologic materials from sandy soil to cohesive soil, and an inexpensively available geologic material complex having high fluidity. SOLUTION: The geologic material fluidization promoting material comprises globurized burned ash. The geologic material complex comprises a geologic material and the geologic material fluidization-promoting material.

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