WO2018142918A1 - Four de recuit continu - Google Patents

Four de recuit continu Download PDF

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Publication number
WO2018142918A1
WO2018142918A1 PCT/JP2018/001002 JP2018001002W WO2018142918A1 WO 2018142918 A1 WO2018142918 A1 WO 2018142918A1 JP 2018001002 W JP2018001002 W JP 2018001002W WO 2018142918 A1 WO2018142918 A1 WO 2018142918A1
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WO
WIPO (PCT)
Prior art keywords
zone
cooling
continuous annealing
annealing furnace
steel plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/001002
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English (en)
Japanese (ja)
Inventor
雅資 梅本
有紀 中田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to CN201880009466.4A priority Critical patent/CN110234775A/zh
Priority to KR1020197021783A priority patent/KR102304637B1/ko
Priority to JP2018518675A priority patent/JP6369660B1/ja
Publication of WO2018142918A1 publication Critical patent/WO2018142918A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details
    • C21D9/5737—Rolls; Drums; Roll arrangements
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/677—Arrangements of heating devices

Definitions

  • the present invention relates to a continuous annealing furnace having a pre-tropical zone.
  • a continuous annealing furnace that has a pre-tropical zone, a heating zone, a soaking zone, and a cooling zone, and that performs annealing treatment of the steel sheet while transporting the steel sheet by a hearth roll having a convex crown shape provided in each band.
  • a thermal gas is applied so that the hearth roll has a concave crown shape by blowing cooling gas to both ends in the axial direction of the hearth roll provided in the heating zone. It is known that the crown is reduced to suppress the meandering of the steel sheet (Patent Document 1, etc.).
  • the atmosphere gas in the heating zone heated by the radiant tube has been used after being cooled by exchanging heat with cooling water using a heat exchanger, so that there is a problem that energy efficiency is poor.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a continuous annealing furnace capable of suppressing meandering of a steel sheet while suppressing deterioration of energy efficiency.
  • a continuous annealing furnace is a continuous annealing furnace for steel sheets provided with a pre-tropical zone, a heating zone, a soaking zone, and a cooling zone, A cooling means is provided for cooling by blowing a cooling gas to both axial ends of the provided hearth roll, and the cooling means uses the pre-tropical atmosphere gas as the cooling gas. is there.
  • the pre-tropical zone and the heating zone communicate with each other via a communication portion that connects the pre-tropical zone and the heating zone.
  • the steel sheet is conveyed from the pre-tropical zone to the heating zone, and the cooling gas is blown to both axial ends of the hearth roll by the cooling means, so that the atmospheric gas in the heating zone is passed through the communication portion. It flows into the pre-tropical zone.
  • the pre-tropical zone uses heat of combustion exhaust gas from a radiant tube provided in the heating zone by a fan, a duct, and a heat exchanger.
  • a circulation system for circulating the pre-tropical atmosphere gas is configured, and the cooling means uses the atmosphere gas branched from the duct as the cooling gas.
  • control means for controlling whether or not the cooling means performs cooling of both ends in the axial direction of the hearth roll according to the thickness and width of the steel plate is characterized by having.
  • the subsequent steel plate is conveyed.
  • the cooling means starts to cool both ends in the axial direction of the hearth roll.
  • the cooling means blows and cools both ends in the axial direction of the hearth roll as a cooling gas using a pre-tropical atmosphere gas whose temperature is lower than that of the atmosphere gas in the heating zone.
  • FIG. 1 is a schematic diagram illustrating a configuration of a continuous annealing line according to the embodiment.
  • FIG. 2 is an explanatory diagram of a pre-tropical atmosphere gas circulation system, a hearth roll cooling device, and the like.
  • FIG. 3 is an explanatory diagram of a chamber provided in the hearth roll cooling device.
  • FIG. 4 is an explanatory view of the circulation of the atmospheric gas between the pre-tropical zone and the heating zone.
  • FIG. 5 is an explanatory diagram of the centering force acting on a narrow steel plate.
  • FIG. 6 is a graph showing the relationship between the use and non-use of the hearth roll cooling device and the plate thickness and plate width of the steel plate.
  • Fig.7 (a) is a figure which shows the case where the steel plate which precedes without using a hearth roll cooling device is conveyed.
  • FIG.7 (b) is a figure which shows the case where the steel plate wider than the preceding steel plate is carried back and conveyed.
  • FIG. 1 is a schematic view showing a configuration of a continuous annealing line 100 according to the embodiment.
  • a continuous annealing line 100 shown in FIG. 1 includes payoff reels 101a and 101b, a welding machine 102, a cleaning facility 103, a tension leveler 104, an entrance looper 105, a continuous annealing furnace 106, a water quench facility 107, an exit looper 108, and a control.
  • a pressure mill 109, a trimmer 110, an Euler 111, a shear 112, and tension reels 113a and 113b are provided.
  • the payoff reels 101a and 101b are obtained by winding a steel plate 2 that passes through the continuous annealing line 100 in a coil shape. By rewinding the payoff reels 101 a and 101 b, the steel plate 2 that passes through the continuous annealing line 100 is sequentially sent to the continuous annealing line 100. In addition, the steel plate 2 that passes through the continuous annealing line 100 is connected to the continuous annealing line 100 by welding the rear end of the preceding steel plate 2 and the front end of the subsequent steel plate 2 by the subsequent welding machine 102. Threaded.
  • the cleaning equipment 103 when the steel plate 2 passes through the liquid agent or the like at high speed, the oil and fat adhering to the steel plate 2 is removed. Thereafter, the steel plate 2 is corrected in distortion by the tension leveler 104 and is carried into the entry side looper 105.
  • the entry side looper 105 is for temporarily waiting the steel plate 2 while maintaining the tension of the steel plate 2 for the subsequent annealing process.
  • the steel plate 2 whose timing is adjusted by the entry side looper 105 is carried into the continuous annealing furnace 106.
  • a pre-tropical zone 106a, a heating zone 106b, a soaking zone 106c, and a cooling zone 106d are arranged from the upstream side to the downstream side in the steel plate conveyance direction.
  • One or more hearth rolls 16 are arranged in the upper and lower parts of the pre-tropical zone 106a, the heating zone 106b, the soaking zone 106c, and the cooling zone 106d.
  • the direction of the steel plate 2 is changed to a right angle without turning back, and the steel plate 2 is moved to the next band.
  • the hearth roll 16 has a convex crown shape with a taper such that the diameter of the central portion in the axial direction is larger than the diameter of both end portions in the axial direction on the roll surface.
  • the pre-tropical zone 106a and the heating zone 106b communicate with each other via a communication portion 106e that connects the lower portions of the respective zones, and the heating zone 106b and the soaking zone 106c are connected to the lower portions of the respective zones.
  • the soaking zone 106c and the cooling zone 106d communicate with each other via a communicating portion 106g that connects the lower portions of each zone.
  • the steel plate 2 is introduced from an opening (steel plate introduction portion) provided in the lower part thereof, and the steel plate 2 is heated by a gas that is heat-exchanged with the combustion exhaust gas of the radiant tube described later by a circulation system as described later. To do.
  • the steel plate 2 can be indirectly heated using a radiant tube (not shown) as a heating means.
  • the steel plate 2 is cooled in the cooling zone 106d.
  • the atmospheric gas temperature in the pre-tropical zone 106a is about 200 [° C.]
  • the atmospheric gas temperature in the heating zone 106b is 700 [° C.] to 800 [° C.].
  • the annealed steel plate 2 is carried into the exit side looper 108 via the water quench facility 107.
  • the exit side looper 108 is for temporarily waiting the steel plate 2 while maintaining the tension of the steel plate 2 for post-processing in the subsequent stage.
  • the pressure adjusting mill 109 is equipment for temper-rolling the steel sheet 2 sent out from the exit side looper 108.
  • the temper-rolled steel sheet 2 is wound around tension reels 113a and 113b via a post-processing unit including a trimmer 110, an oiler 111, and a shear 112.
  • the trimmer 110 cuts unnecessary portions from the steel plate 2.
  • the Euler 111 applies oil to the steel plate 2.
  • the shear 112 cuts the defective part detected in the inspection process.
  • the continuous annealing line 100 is provided with a process computer (not shown) for managing the operation of the continuous annealing line 100.
  • This process computer is, for example, the transfer sequence of the steel plates 2 rewound through the payoff reels 101a and 101b, the transfer speed of the steel plates 2, the standard, thickness, width and length of the steel plates 2 constituting the steel plates 2.
  • the furnace temperature of each zone of the continuous annealing furnace 106 is managed.
  • the temperature of the portion where the hearth roll 16 is not in contact with the steel plate 2 is heated by the atmospheric gas in the heating zone 106b and rises.
  • the temperature of the steel plate 2 entering the heating zone 106b from the pre-tropical zone 106a through the communicating portion 106e is lower than the ambient temperature of the heating zone 106b, and the steel plate 2 of the hearth roll 16 is low.
  • the temperature of the portion in contact with the steel plate is close to the temperature of the steel plate 2. Therefore, a temperature distribution in which both ends are higher than the center in the axial direction of the hearth roll 16 can be achieved.
  • the original convex crown shape of the hearth roll 16 is not maintained, and the concave surface having a taper such that the diameter of the central portion in the axial direction becomes smaller than the diameter of both end portions in the axial direction on the roll surface. If it becomes a crown shape, the steel plate 2 conveyed by the hearth roll 16 cannot be automatically centered in the axial center of the hearth roll 16, and the meandering of the steel plate 2 is likely to occur.
  • the crown which arises in the hearth roll 16 by the temperature change by the contact of the steel plate 2, etc. is called thermal crown.
  • FIG. 2 is an explanatory diagram of the atmospheric gas circulation system of the pre-tropical zone 106a, the hearth roll cooling device 80, and the like.
  • FIG. 3 is an explanatory diagram of the chamber 81 provided in the hearth roll cooling device 80.
  • the pretropical zone 106 a uses the fan 10, the circulation duct 20, and the heat exchanger 40, while utilizing the heat of the combustion exhaust gas from the radiant tube provided in the heating zone 106 b, while the pretropical zone 106 a.
  • a circulation system for circulating the atmospheric gas is configured.
  • the exhaust gas discharged from the radiant tube 60 of the heating zone 106b is passed through the heat exchanger 40, whereby the circulation gas flowing through the circulation duct 20 connected to the heat exchanger 40 is heated. And it is comprised so that the steel plate 2 may be heated by spraying the circulating gas heated in this way from the chamber 50 provided in the pre tropical zone 106a to the steel plate 2 which passes the pre tropical zone 106a.
  • a branch duct 30 branched from the circulation duct 20 is provided downstream of the fan 10 in the circulation duct 20 and upstream of the heat exchanger 40, and a part of the circulation gas flowing through the circulation duct 20 is provided. It flows into the branch duct 30.
  • the branch duct 30 is provided with a shut-off valve 91, a flow control valve 92, a pressure gauge 93, and a distribution pipe 31 connected to the chamber 81.
  • a part of the circulating gas sent from the pre-tropical zone 106 a to the circulation duct 20 by the fan 10 flows into the branch duct 30 branched from the circulation duct 20 and is sent into the chamber 81 via the distribution pipe 31. As shown in FIG.
  • the circulating gas sent into the chamber 81 is sprayed as cooling gas from both the injection ports 81a and 81b to both ends in the axial direction of the hearth roll 16, and both ends in the axial direction of the hearth roll 16 are cooled. Is done.
  • the fan 10 used in the circulation system of the pretropical zone 106a is also used as a fan for sending atmospheric gas from the pretropical zone 106a to the chamber 81 of the heating zone 106b. This eliminates the need for a dedicated fan for sending atmospheric gas from the pre-tropical zone 106a to the chamber 81 of the heating zone 106b, thereby reducing costs accordingly.
  • a heat insulating plate 70 provided with a slit through which the steel plate 2 can pass is provided between the hearth roll 16 and the radiant tube 60, and radiant heat from the radiant tube 60 is generated.
  • the heat insulating plate 70 By shielding with the heat insulating plate 70, the temperature rise of the atmospheric gas in the vicinity of the hearth roll 16 is reduced. Thereby, the temperature difference of the part which contacts the steel plate 2 of the hearth roll 16 and the part which does not contact the steel plate 2 of the hearth roll 16 is reduced rather than the case where the heat insulating board 70 is not provided.
  • the thermometer 3 is provided in the space on the hearth roll 16 side separated from the space on the radiant tube 60 side by the heat insulating plate 70.
  • a chamber 81 provided with two injection ports 81a and 81b is disposed.
  • the chamber 81 constitutes a cooling means that cools the atmosphere gas of the pre-tropic zone 106a by using the cooling gas as a cooling gas and spraying it from both the injection ports 81a and 81b to both ends of the hearth roll 16 in the axial direction.
  • the atmospheric gas in the pre-tropic zone 106a is used as a cooling gas and sprayed to both ends in the axial direction of the hearth roll 16 by the chamber 81, so that both axial ends in the axial direction of the hearth roll 16 heated by the atmospheric gas in the heating zone 106b are added. It can be cooled by the atmospheric gas (cooling gas) of the pre-tropical zone 106a, which has a lower temperature than the atmospheric gas of the tropical zone 106b, and the thermal crown of the hearth roll 16 in the heating zone 106b is reduced to suppress meandering of the steel plate 2. Can do.
  • the atmosphere gas of the pre-tropical zone 106a having a temperature lower than that of the atmosphere gas of the heating zone 106b as a cooling gas for cooling by blowing the both ends in the axial direction of the hearth roll 16
  • a radiant tube is used as the cooling gas. Since it is not necessary to cool and use the atmospheric gas in the heating zone 106b heated by 60, deterioration of energy efficiency can be suppressed. Furthermore, since a cooling device for cooling the atmosphere gas in the dedicated heating zone 106b is not required to obtain the cooling gas, the cost can be reduced and the equipment can be downsized accordingly.
  • FIG. 4 is an explanatory view of the circulation of the atmospheric gas between the pre-tropical zone 106a and the heating zone 106b.
  • the atmospheric gas in the pre-tropical zone 106a is sent from the pre-tropical zone 106a to the heating zone 106b by the fan 10 to reduce the internal pressure of the pre-tropical zone 106a and the internal pressure of the heating zone 106b. Is increased. Therefore, an air flow is generated in which the atmospheric gas in the heating zone 106b flows into the pre-tropical zone 106a through the communication portion 106e that connects the pre-tropical zone 106a and the heating zone 106b.
  • the steel plate 2 located on the exit side of the communication portion 106e and the pre-tropical zone 106a is heated before entering the heating zone 106b by the atmospheric gas in the heating zone 106b.
  • the temperature difference between the temperature and the ambient gas temperature in the heating zone 106b can be reduced. Therefore, in the vicinity of the entrance side of the heating zone 106b, the temperature difference between the temperature of the portion of the hearth roll 16 in contact with the steel plate 2 and the temperature of the portion of the hearth roll 16 not in contact with the steel plate 2 is reduced. It is possible to reduce the temperature gradient in the direction and suppress the occurrence of a thermal crown in the hearth roll 16 that has a concave crown shape due to a difference in thermal expansion.
  • FIG. 5 is an explanatory diagram of the centering force acting on a narrow steel plate.
  • the centering force of the steel plate 2 works due to the taper of the roll surface.
  • the taper of the hearth roll 16 becomes smaller as shown in FIG. Since this area is reduced and the centering force is also reduced, it becomes easier to meander.
  • the steel plate 2 is thin and has low rigidity, if the centering force at the taper of the hearth roll 16 is too strong for the rigidity of the steel plate 2, there is a possibility that buckling (squeezing) may occur in the steel plate 2. is there.
  • the axial central portion of the hearth roll 16 in contact with the steel plate 2 is more thermally expanded than both axial end portions, and a convex crown shape is formed. If the taper angle becomes large, the buckling (drawing) described above may become prominent when the thin steel plate 2 having a wide width is used.
  • the part which does not contact the steel plate 2 of the hearth roll 16 decreases as the steel plate 2 becomes wider, the temperature gradient is small in the axial direction of the hearth roll 16 and the thermal expansion difference is reduced, and the convex crown shape is maintained. And meandering is less likely to occur.
  • the heating zone 106 b is provided only when the narrow steel plate 2 that is easy to meander and is not easily drawn is passed through the continuous annealing furnace 106.
  • Cooling gas may be blown from the chamber 81 to both ends of the hearth roll 16 in the axial direction.
  • a cooling device that cools both ends in the axial direction of the hearth roll 16 is used, and the plate in other ranges
  • the cooling device that cools both axial ends of the hearth roll 16 is not used.
  • the pressure of the cooling gas blown from the chamber 81 to both ends in the axial direction of the hearth roll 16 may be set according to the conditions of the plate thickness and the plate width.
  • the pressure adjustment of the cooling gas blown from the chamber 81 to both ends in the axial direction of the hearth roll 16 can be executed by automatic control by a process computer.
  • the process computer acquires information on the thickness and width of the steel plate 2 passed through the continuous annealing furnace 106 from a database or the like, and based on the pressure of the cooling gas flowing in the branch duct 30 detected by the pressure gauge 93.
  • the pressure of the cooling gas is adjusted according to the conditions of the plate thickness and the plate width of the steel plate 2 by adjusting the opening degree of the flow control valve 92.
  • the condition 1 when the plate thickness is 0.21 [mm] or more and the plate width is 800 [mm] or less, the cooling gas pressure is 1.4 [kPa].
  • the condition 2 when the plate thickness is 0.23 [mm] or more and the plate width is 830 [mm] or less, the pressure of the cooling gas is set to 1.7 [kPa].
  • the condition 3 when the plate thickness is 0.30 [mm] or more and the plate width is 860 [mm] or less, the pressure of the cooling gas is 1.7 [kPa].
  • the shut-off valve 91 provided in the branch duct 30 can be automatically opened and closed under the control of a process computer.
  • the process computer then opens the shut-off valve 91 when passing the thick steel plate 2 through the continuous annealing furnace 106, and part of the circulating gas in the pretropical zone 106 a is heated via the branch duct 30.
  • the gas is fed into a chamber 81 provided in 106 b and cooled by blowing a cooling gas from the chamber 81 to both ends in the axial direction of the hearth roll 16.
  • the process computer closes the shut-off valve 91 and passes the circulating gas of the pretropical zone 106 a flowing into the branch duct 30 to the chamber 81 when passing the steel plate 2 other than the narrow material through the continuous annealing furnace 106.
  • the cooling gas is prevented from being blown from the chamber 81 to both ends of the hearth roll 16 in the axial direction.
  • it is possible to suppress the occurrence of meandering when the thick steel plate 2 is passed through the continuous annealing furnace 106 and annealing, and the thin steel plate 2 is passed through the continuous annealing furnace 106 for annealing. It is possible to suppress the occurrence of buckling (squeezing) when performing.
  • FIG. 7 (a) is a diagram showing a case where the preceding steel plate 2 is conveyed without using the hearth roll cooling device 80.
  • FIG. FIG. 7B is a view showing a case where the steel plate 2 wider than the preceding steel plate 2 is conveyed after being moved backward.
  • the rear end of the preceding steel plate 2 and the front end of the subsequent steel plate 2 are connected by welding with a welding machine 102.
  • the material and size of the preceding steel plate 2 and the following steel plate 2 may be different.
  • the preceding steel plate 2 has the thermal crown of the hearth roll 16 without using the hearth roll cooling device 80. Although meandering does not occur, as shown in FIG.
  • the hearth roll cooling device 80 may meander due to the thermal crown of the hearth roll 16. In this case, even if cooling of both ends in the axial direction of the hearth roll 16 is started by the hearth roll cooling device 80 after the passing of the subsequent steel plate 2 is started, the temperature at both ends in the axial direction of the hearth roll 16 is started.
  • the both ends in the axial direction of the hearth roll 16 are reduced to a temperature at which the thermal crown can be reduced to such an extent that the meandering can be suppressed before the subsequent steel plate 2 is passed through the continuous annealing furnace 106. Cooling may not be in time.
  • the process computer monitors the plate width of each of the preceding steel plate 2 and the following steel plate 2, and the subsequent steel plate 2 of the following steel plate 2 with respect to the plate width of the preceding steel plate 2 is monitored.
  • the amount of spread of the plate width is larger than a predetermined amount
  • cooling of both ends in the axial direction of the hearth roll 16 by the hearth roll cooling device 80 is started before the subsequent plate of the steel plate 2 is started. That is, before the passage of the subsequent steel plate 2 is started, the shut-off valve 91 that is closed when the preceding steel plate 2 is passed is opened, and the cooling gas is supplied from the chamber 81 to both axial ends of the hearth roll 16. Spray to start cooling.
  • the cooling of both axial ends of the hearth roll 16 can be made in time to a temperature at which the thermal crown can be reduced to such an extent that the meandering can be suppressed. it can. Therefore, meandering of the subsequent steel plate 2 that can occur when the amount of spread of the subsequent steel plate 2 relative to the width of the preceding steel plate 2 is larger than a predetermined amount can be suppressed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

L'invention concerne un four de recuit continu d'acier comprenant une zone de préchauffage, une zone de chauffage, une zone de stabilisation thermique et une zone de refroidissement ; le four présente un moyen de refroidissement tel qu'un appareil de refroidissement de rouleau de sole qui refroidit un rouleau de sole par pulvérisation d'un gaz de refroidissement sur les deux extrémités axiales dudit rouleau situé dans la zone de chauffage ; le moyen de refroidissement utilise le gaz atmosphérique provenant de la zone de préchauffage comme gaz de refroidissement.
PCT/JP2018/001002 2017-02-02 2018-01-16 Four de recuit continu Ceased WO2018142918A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880009466.4A CN110234775A (zh) 2017-02-02 2018-01-16 连续退火炉
KR1020197021783A KR102304637B1 (ko) 2017-02-02 2018-01-16 연속 소둔로
JP2018518675A JP6369660B1 (ja) 2017-02-02 2018-01-16 連続焼鈍炉

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017017251 2017-02-02
JP2017-017251 2017-02-02

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WO2018142918A1 true WO2018142918A1 (fr) 2018-08-09

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PCT/JP2018/001002 Ceased WO2018142918A1 (fr) 2017-02-02 2018-01-16 Four de recuit continu

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JP (1) JP6369660B1 (fr)
KR (1) KR102304637B1 (fr)
CN (1) CN110234775A (fr)
WO (1) WO2018142918A1 (fr)

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CN110184555A (zh) * 2019-06-22 2019-08-30 浙江东南新材科技有限公司 一种热镀锌层的合金化工艺及合金炉
CN111996360A (zh) * 2020-09-25 2020-11-27 张家港扬子江冷轧板有限公司 一种退火炉炉辊自动防跑偏装置及其自动防跑偏方法
CN118460834A (zh) * 2024-07-12 2024-08-09 烟台一诺电子材料有限公司 一种键合丝生产用退火装置

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KR102236621B1 (ko) * 2019-09-30 2021-04-08 주식회사 삼우에코 열처리 조건을 확립하기 위한 강판 연속열처리 시스템
CN111996361A (zh) * 2020-09-08 2020-11-27 白建生 一种漆包线生产用退火炉
CN112301201A (zh) * 2020-09-27 2021-02-02 甘肃酒钢集团宏兴钢铁股份有限公司 一种连续式退火炉及其用于中厚板连续固溶处理的方法
CN112813250A (zh) * 2021-01-04 2021-05-18 宝钢湛江钢铁有限公司 一种用于直火炉炉顶辊室的水冷式温度控制装置及其方法
CN112853083A (zh) * 2021-01-04 2021-05-28 宝钢湛江钢铁有限公司 一种用于直火炉炉顶辊室的空气冷却式温度控制装置及其方法
KR102842301B1 (ko) 2023-01-05 2025-08-05 주식회사 인트로닉 소둔로의 복사 가열 장치

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