WO2019057116A1 - 一种热轧在线移动保温热处理工艺及热处理线 - Google Patents

一种热轧在线移动保温热处理工艺及热处理线 Download PDF

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Publication number
WO2019057116A1
WO2019057116A1 PCT/CN2018/106709 CN2018106709W WO2019057116A1 WO 2019057116 A1 WO2019057116 A1 WO 2019057116A1 CN 2018106709 W CN2018106709 W CN 2018106709W WO 2019057116 A1 WO2019057116 A1 WO 2019057116A1
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WIPO (PCT)
Prior art keywords
heat treatment
hot
heat
thermal insulation
coil
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Application number
PCT/CN2018/106709
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English (en)
French (fr)
Inventor
陈勇
朱蔚林
王野
赵春禾
宋涛
Original Assignee
宝钢湛江钢铁有限公司
宝山钢铁股份有限公司
上海贺力液压机电有限公司
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Priority claimed from CN201710853613.3A external-priority patent/CN107470377A/zh
Priority claimed from CN201810632238.4A external-priority patent/CN110616307A/zh
Priority claimed from CN201810632237.XA external-priority patent/CN110616306A/zh
Application filed by 宝钢湛江钢铁有限公司, 宝山钢铁股份有限公司, 上海贺力液压机电有限公司 filed Critical 宝钢湛江钢铁有限公司
Priority to KR1020207010727A priority Critical patent/KR20200066630A/ko
Priority to JP2020537826A priority patent/JP7253558B2/ja
Priority to EP18859703.3A priority patent/EP3685931B1/en
Publication of WO2019057116A1 publication Critical patent/WO2019057116A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C21D9/562—Details
    • C21D9/563—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
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • 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
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • 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
    • C21D9/675—Arrangements of charging or discharging devices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B11/00—Bell-type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Definitions

  • the invention relates to a hot rolling and heat treatment process, in particular to a hot rolling online mobile heat preservation heat treatment process and a heat treatment line.
  • Hot-rolled and cold-rolled high-strength steels have complex composition design and strengthening mechanism.
  • uneven cooling after rolling or coiling, and too fast cooling rate will affect the performance of the finished product, resulting in strip performance.
  • Problems such as fluctuations and deterioration of the shape of the plate.
  • it is usually improved by hot coil winding, hot-rolling finishing, centralized heat preservation and slow cooling (heat insulation wall or thermal insulation pit, etc.) or offline heat treatment (roller bottom furnace or hood furnace, etc.).
  • problems such as increased manufacturing costs and extended manufacturing cycles, and some methods cannot fully achieve the purpose of improving performance and shape quality.
  • the thermal insulation pit or the thermal insulation wall is used for slow cooling treatment
  • the original process is: heating - rolling - layer cooling - coiling - offline heat treatment (heat preservation pit or heat treatment furnace, etc.).
  • the thermal insulation pit or the thermal insulation wall is used for the cold cooling treatment. Since the hot coil is usually taken up to the storage time of 30 to 120 minutes, the cooling rate of the hot coil in the air cooling state is higher. Fast, uneven cooling of the inner and outer rings of the strip and the middle side of the strip have occurred, and there is no heat source heating in the thermal insulation pit or the thermal insulation wall. The actual slow cooling treatment has very limited improvement on strip performance and shape quality;
  • roller bottom furnace tempering treatment or the cover furnace annealing treatment can realize the homogenization heat treatment of the strip steel, but the engineering investment is huge once, and the strip steel needs to be reheated, which will cause a significant increase in the manufacturing cost and prolong the product. Manufacturing cycle.
  • hot-rolling finishing pools for centralized thermal insulation (insulation walls or thermal insulation pits) or offline heat treatment (roller-type furnaces or hood furnaces) to treat hot coils.
  • a roller tray type metal tape roll transport device disclosed in Chinese Patent No. CN201210338335 uses a transport chain tray to carry out the roll transport after the steel coil is taken up.
  • the device is a fixed saddle for transporting only a single steel coil. On-line insulation of steel coils is not possible during transportation.
  • the "online thermal insulation slow cooling device" disclosed in the Chinese patent CN201710853613.3 has only the heat preservation effect, and the steel coil heat preservation effect is not good because the bottom structure cannot be completely sealed.
  • the "mobile tunnel insulation cover” disclosed in Korean Patent KR1589913 (B1) while realizing the movement and achieving the insulation, the overall mobile device is included in the insulation chamber to reduce the service life of the device. A single independent insulation cannot be achieved, and the insulation cover is perfectly combined with the transportation line.
  • the Chinese patent CN101413051B discloses "a hot-rolled strip deep processing system" which uses a heat-insulating tunnel structure, but the overall mobile device is included in the heat-insulating chamber to reduce the service life of the equipment.
  • the most prominent problem in the hot-rolling thermal insulation device is that the interval between the steel strips entering the thermal insulation device is too long, the metallographic transformation of the steel strip has occurred or completed, and the offline slow cooling method improves the performance of the hot coil.
  • the effect cannot meet the quality requirements of high strength steel.
  • the hot coil is placed in the heat preservation cover and needs to be lifted for 20 to 30 minutes.
  • the air cooling time of the steel coil is too long, which affects the heat preservation effect and material performance.
  • the heat preservation cover is basically in the offline mode (the heat preservation device is statically placed on the take-up platform), and the steel coil transportation lifting and unloading disrupts the normal production rhythm of the production line. Affecting the production capacity of the rolling steel production line, the actual mass production is difficult.
  • the object of the present invention is to provide a hot-rolling on-line mobile thermal insulation heat treatment process and a heat treatment line, which effectively combines the hot coil winding process temperature, and performs high-efficiency heat treatment heat treatment on the hot coil in the first time, and the heat-treated heat coil moves online along with the heat preservation device. Ensuring the realization of differentiated heat treatment process requirements not only can effectively improve product performance, but also low investment, meet high-speed large-scale production needs, and save energy.
  • a hot rolling online mobile heat preservation heat treatment process the slab is heated, rolled, layer cooled, coiled to a hot coil state, and the hot coil heat treatment heat treatment is added to the hot coil within 30 minutes after the hot coil unloading and bundling is completed.
  • the device heats the hot coil and simultaneously transports it to the hot coil heat treatment treatment area; after the heat treatment time is 1 to 48 hours, the steel coil is sent to the warehouse after being cooled by air cooling; wherein the coiling temperature is controlled at 250 to 750 °C. between.
  • the hot coil heat treatment device is installed on the hot coil within 10 minutes.
  • the mobile hot coil heat treatment heat treatment device is a transport trolley with a heat insulation cover.
  • the natural temperature drop rate in the mobile hot coil heat treatment device is 1 to 10 ° C / h.
  • the mobile hot coil heat treatment device is provided with heating and/or vacuuming and/or filling with an inert gas system.
  • composition design and TMCP process are complex, strength properties and post-rolling properties.
  • the uniformity is closely related to the maintenance of the hot coil temperature and the uniform cooling. Generally, the full-length direction or the width direction fluctuation of the performance is generally observed after the coiling in the natural cooling process.
  • the currently feasible method is to adopt the offline heat treatment method, after the hot coil is cooled by the coil, and then heated to a certain process temperature, the heat treatment is performed, and the product performance is improved by the tempering or annealing process.
  • Hot-rolled and cold-rolled high-strength steel hot-rolling coiling process temperature is usually between 250 and 750 °C, which is the same as the offline heat treatment process temperature range.
  • the technical route can accurately control the coiling temperature and pass the heat preservation before the hot coil is naturally cooled.
  • the process equipment realizes the on-line heat treatment of the hot coil at a reasonable process temperature, and realizes the tempering or annealing heat treatment of the hot coil through a certain time of heat preservation treatment, and the process treatment effect is equivalent to the offline heat treatment, but the equipment investment is saved compared with the offline heat treatment. Energy consumption, achieving a green sustainable heat treatment process.
  • a heat treatment transport chain roller is disposed between the bundling device and the cold rolling mill after the hot-rolled steel coil reeling machine, and at least one of the heat-treated transport chain roller paths is disposed.
  • a mobile hot coil heat treatment device correspondingly, a lifting device for loading and unloading steel coils to the movable hot coil heat treatment device at both ends of the heat treatment transport chain roller; the mobile hot coil heat treatment device An insulating cover for sealing the hot-rolled steel coil in a closed line is provided.
  • a steel coil heat preservation zone is disposed on one side of the heat treatment transport chain roller, and the steel coil heat preservation zone is provided with at least one heat insulation transport chain roller road connected to the heat treatment transport chain roller.
  • At least one heat treatment station is disposed on the heat treatment transport chain roller or the insulated transport chain roller, and the heat treatment workstation is provided with a heating system for heating the inside of the heat shield of the mobile hot coil heat treatment device or/and for gas cooling.
  • Protective gas cooling input system is provided on the heat treatment transport chain roller or the insulated transport chain roller, and the heat treatment workstation is provided with a heating system for heating the inside of the heat shield of the mobile hot coil heat treatment device or/and for gas cooling.
  • the heat treatment transport chain roller path is provided with an information code printing device for printing the steel coil information on the steel coil at one end of the cold rolling unit.
  • the mobile hot coil heat treatment heat treatment device comprises: a bottom plate; a steel coil fixing seat disposed at a central portion of the upper end surface of the bottom plate; a tray, an annular structure, the tray is horizontally sleeved on the steel coil fixed The middle part of the seat; the heat insulating cover, the lower end opening, the inner cavity volume is larger than the steel coil; the heat insulating cover is disposed on the tray; the electric heating device is disposed on the inner side wall of the heat insulating cover; the temperature sensor is disposed at the heat preservation
  • the information collecting control module, the electric heating device and the temperature sensor are electrically connected to the information collecting control module.
  • the mobile hot coil heat treatment device further includes a gas protection device and a gas sensor, and is electrically connected to the information collection control module.
  • the information collection control module is provided with a signal transmission module.
  • the steel coil fixing base comprises two supporting bodies arranged in parallel, the upper end surfaces of the two supporting bodies are inclined surfaces and symmetrically arranged; and a side sealing device is respectively disposed at two side gaps of the two supporting bodies.
  • a bottom sealing device is arranged between the bottoms of the two support bodies of the steel coil fixing seat to close the gap between the bottoms of the two supporting bodies.
  • the bottom sealing device comprises: a support plate disposed between the two support bodies of the steel coil fixing seat, the support plates are vertically arranged, and a plurality of rollers are evenly spaced apart along the length direction of the lower sides of the support plates to form a slidable mechanism; a sealing plate horizontally disposed on a top surface of the support plate, the size of which corresponds to a gap between the bottoms of the two support bodies.
  • an electromagnetic block is disposed on one end surface of the support plate, and correspondingly, a metal stopper engaged with the electromagnetic block is disposed between the end portions of the two support bodies of the steel coil fixing seat.
  • the side sealing device comprises
  • Two fixed bottom plates are respectively horizontally disposed on the outer side of the two support bodies of the steel coil fixing seat and at the bottom of the gap; the outer side surfaces of the fixed bottom plate are axially spaced apart from each other;
  • Two sealing members are respectively disposed on the two sides of the two support bodies of the steel coil fixing seat, and the bottom end of the sealing member is slidably disposed on the guide wheel of the fixed bottom plate;
  • the driving mechanism comprises two racks respectively disposed horizontally on the two sealing members, one end of the rack is connected to the sealing member, and a driving shaft is horizontally disposed on the other side of the supporting body with respect to the gap through the two bearing seats A gear is disposed at each end of the drive shaft, and the gear meshes with the rack.
  • the bearing seat is disposed on one side of the support body through a fixing plate, and one side of the fixing plate is provided with a through hole through which the rack passes, and an outer side of the fixing plate above the through hole is provided with a The roller against which the top surface of the rack abuts.
  • the sealing plate and the sealing member are a composite layer structure
  • the middle is a heat insulating material felt
  • both sides are covered with a high temperature resistant steel plate.
  • the sealing member is a right angle plate structure.
  • a positioning sleeve is disposed on a lower side of the heat insulating cover, and correspondingly, the heat insulating cover tray is provided with a positioning pin that cooperates with the positioning sleeve; the positioning pin is preferably a cone.
  • the heat insulating cover is provided with a venting hole and a corresponding exhaust valve.
  • the heat insulating cover is a composite structure
  • the outer protective layer is a high-strength steel plate
  • the middle layer is a heat insulating material
  • the inner layer is a high-temperature resistant stainless steel plate.
  • the heat insulating cover is a composite structure, which comprises an inner radiating layer, an electric heating wire layer, an intermediate net cover, an intermediate heat insulating layer and an outer protective layer in order from the inside to the outside.
  • the electric heating device is an electric heating wire
  • the temperature sensor is a thermocouple sensor
  • the steel coil transport trolley transports the steel coil to the pallet, and then adds a heat preservation device to the tray to insulate the steel coil for the first time.
  • the heat preservation cover and the steel coil follow the normal operation of the conveyor chain roller, and do not affect the production operation of the subsequent steel coil, and heat treatment is realized during transportation.
  • Transport trolley traverse roller conveyor device transporting the empty transport trolley device without insulation cover from the return transport chain roller conveyor to the heat treatment transport chain roller conveyor to realize the transfer of the transport trolley device to ensure that the transport trolley next receives the crimped Hot rolled steel coils.
  • the heat shield lifting device lifts the heat shield on the transport trolley device with the heat shield moving on the return conveyor chain roller, and then moves the heat shield to the heat treatment conveyor chain roller to wait.
  • the heat-removing cover is transferred to the lifting transport device to automatically place the heat-insulating cover on the transport trolley device to achieve the heat-preserving of the hot-rolled steel coil after the steel is crimped.
  • a transport trolley unit with a heat shield can fulfill the online heat treatment requirements for steel coils.
  • the transport trolley device can realize movement on the transport chain roller table, and transport the coil after the hot rolling crimping to the heat preservation region of the transport chain to realize heat treatment.
  • the heat preservation cover and the transportation trolley device can be transported and detached by using the heat preservation cover to transfer the lifting and transporting device, and the heat preservation cover to transfer the lifting and transporting device.
  • the steel coil is insulated and heat treated in a transport trolley unit with a heat shield.
  • the transport trolley device with the heat shield By controlling the transport trolley device with the heat shield to achieve the purpose of heat treatment in the heat treatment transport chain roller running time.
  • the individual insulation cover area arrangement needs to be combined with a transport trolley unit with a heat shield, taking into account the number and timing of hot rolled steel coils that need to be insulated.
  • Steel coil hot coil insulation cover n wherein the number of steel coil transport trolleys is >n+1 on the production line.
  • the invention can carry out in-depth processing special treatment for the special batch of hot-rolled strip steel as needed, and increase the heat treatment workstation in the heat preservation area.
  • the heat treatment workstation is provided with a heat shield internal heating system and a protective gas cooling input system.
  • the hot-rolled strip transport trolley transports the hot-rolled coils to the workstation, and the internal heating system heats the hot-rolled strips, using the relevant heat treatment curves and process requirements for the coils twice. Heating achieves improved overall performance of the hot rolled strip.
  • a transport trolley unit with a heat shield that enters the processing station is connected to a protective gas cooling input system. It is necessary to control the internal temperature of the control cover device by controlling the amount of gas and the ratio of the shielding gas that is controlled to be connected. The overall performance of the hot rolled strip is improved by secondary heating of the coil using relevant heat treatment curves and process requirements.
  • the hot-rolled strip transport trolley transports the hot-rolled strip to the information code printing station and prints the coil information on the steel coil. After ensuring that the steel coil after the insulation cover is detached, the steel coil carries the information of the steel coil and enters the process line of the process.
  • the heat-treated steel coil is transported to the coil store through the conveyor chain roller, or transported to the production line by the transport chain system.
  • the processing line of the invention further comprises a heat treatment workstation and an information coding printing device; the heat treatment workstation needs special processing for in-depth processing of the special batch of hot-rolled strip steel, and the heat treatment workstation is added in the heat preservation area.
  • the heat treatment workstation is provided with a heat shield internal heating system and a protective gas cooling input system.
  • the hot-rolled strip transport trolley transports the hot-rolled strip to the information code printing station and prints the steel coil information on the steel coil.
  • the steel coil is transported to the steel coil storage tank along with the transport chain roller, and the steel coil which needs cold rolling or flat cutting is turned to the transport chain roller path of the next process by using the transport trolley rotating roller device.
  • the insulation covers are individually independent, and each coil can be temperature controlled during transport of the transport chain, saving time and increasing production rhythm and efficiency.
  • the hot rolling online mobile heat preservation heat treatment process of the invention heats the hot coil and directly passes the heat preservation device to realize the hot roll online moving heat treatment, which is used for replacing the traditional offline heat treatment, thereby improving the product performance, the shape quality and the energy saving.
  • the invention realizes on-line heat treatment of the hot-rolled steel coil after coiling in the transportation chain transportation process, and immediately after the steel coil is taken out of the coiler, the steel coil is loaded with the mobile hot-roll heat preservation heat treatment device, and the steel is used.
  • the heat of the coil itself is subjected to a soaking and slow cooling heat treatment process for the steel coil, achieving the purpose of high efficiency, energy saving and provision of the finished product rate.
  • the first time of the production line of the invention heats up the steel coil after the coiling, greatly improves the performance improvement caused by the excessively long time after the coil is taken up and enters the slow cooling device, and the length and width direction performance of the strip
  • the problem of large fluctuations Avoid the occurrence of severe fluctuations in rolling force during cold rolling production, over-tolerance standards for cold-rolled finished products, increase rolling stability of cold-rolled acid continuous rolling mills, and increase the yield of cold-rolled ultra-high-strength steel.
  • the insulation effect is ideal, which can meet the demand of high-strength steel insulation process.
  • Figure 1 and Figure 2 are schematic diagrams of the effect of online mobile insulation on the performance of steel coils.
  • FIG 3 is a schematic view of an embodiment of a hot rolled strip heat treatment line of the present invention.
  • FIG. 4 is a schematic view of an embodiment of a hot rolled strip heat treatment line of the present invention.
  • Figure 5 is a schematic view of an embodiment of a hot rolled strip heat treatment line of the present invention.
  • FIG. 6 is a schematic structural view of Embodiment 1 of the mobile hot coil heat preservation heat treatment apparatus according to the present invention.
  • Figure 7 is a side view of the first embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 8 is a front elevational view of a second embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 9 is a front elevational view of a third embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 10 is a partial cross-sectional view showing the heat insulating cover of the embodiment of the mobile hot coil heat preservation heat treatment device of the present invention.
  • Figure 11 is a perspective view of the first embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 12 is a front elevational view showing the first embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 13 is a perspective view of the bottom sealing device in the first embodiment of the mobile hot-roll heat preservation heat treatment apparatus according to the present invention.
  • Figure 14 is a front elevational view showing the first embodiment of the mobile hot coil heat treatment apparatus according to the present invention.
  • Figure 15 is a side view of Figure 14.
  • Figure 16 is a bottom perspective view of the first embodiment of the mobile hot-roll heat preservation heat treatment apparatus according to the present invention.
  • Fig. 17 is an enlarged schematic view showing a portion A of Fig. 16;
  • the invention relates to a hot rolling online mobile heat preservation heat treatment process, wherein the slab is heated, rolled, layer cooled, coiled to a hot coil state, and the hot coil is loaded with mobile heat within 30 minutes after the hot coil unloading and bundling is completed.
  • the coil heat preservation heat treatment device heat-treats the hot coil and simultaneously transports it to the hot coil heat treatment treatment area; after the heat treatment time is 1 to 48 hours, the steel coil is sent to the warehouse after being cooled by air cooling; wherein the coiling temperature is controlled at 250 Between ⁇ 750 ° C.
  • the hot coil heat treatment device is installed on the hot coil within 10 minutes.
  • the mobile hot coil heat treatment heat treatment device is a transport trolley with a heat insulation cover.
  • the natural temperature drop rate in the mobile hot coil heat treatment device is 1 to 10 ° C / h.
  • the mobile hot coil heat treatment device is provided with heating and/or vacuuming and/or filling with an inert gas system.
  • the invention adopts the "on-line mode" heat treatment heat treatment of hot-rolled and cold-rolled high-strength steel hot coil, thereby avoiding the influence of air-cooling on the performance of the coil after coiling, and realizing the properties of hot-rolled and cold-rolled high-strength steel. improve.
  • a hot-rolled strip heat treatment line of the present invention is provided with a heat-treated transport chain roller 30 between the bundling device 20 and the cold-rolling unit after the hot-rolled steel coil reeling machine 10, and the heat-treated transport chain roller At least one mobile hot-roll heat preservation heat treatment device 40 is disposed on the road 30.
  • a heat-dissipating transport chain roller 30 is disposed at each end of the heat-transporting conveyor roller 30 to a lifting device 50 for moving the thermal coil heat treatment device. 50'; wherein the mobile hot coil heat treatment device 40 is provided with a heat insulating cover capable of sealing the hot rolled steel coil in a line.
  • At least one heat treatment station 80 is disposed on the heat treatment transport chain roller 30 or the heat transport chain roller 70, and the heat treatment workstation 80 is provided with a heating system for heating the inside of the heat shield of the mobile hot coil heat treatment device. Or / and a gas-cooled shielding gas cooling input system; 90 is a rotating roller table.
  • a heat coil transporting zone 60 is disposed on one side of the heat treatment transport chain roller 10, and the coil heat retaining zone 60 is provided with at least one insulated transport chain roller 70 connected to the heat treatment transport chain roller.
  • Device 50
  • the heat treatment transport chain roller 30 is provided with an information code printing device 90 for printing steel coil information on the steel coil at one end of the cold rolling train.
  • the mobile hot-roll heat preservation heat treatment device 40 of the present invention includes
  • a coil holder 2 disposed at a central portion of the upper end surface of the bottom plate 1;
  • tray 3 an annular structure, the tray 3 is horizontally sleeved in the middle of the steel coil fixing seat 2;
  • the heat insulating cover 4 has a lower end opening, and the inner cavity volume is larger than the steel coil 100; the heat insulating cover 4 is disposed on the tray 3;
  • the electric heating device 5 is disposed on the inner side wall of the heat preservation cover 4;
  • the information collection control module 7 is electrically connected to the information acquisition control module 7 by the electric heating device 5 and the temperature sensor 5.
  • a gas protection device and gas sensors 8, 8' are further included, and the information acquisition control module 7 is electrically connected to each other.
  • the information collection control module 7 is provided with a signal transmission module.
  • the steel coil fixing base 2 includes two supporting bodies 21, 22 juxtaposed, the upper end faces of the two supporting bodies 21, 22 are inclined surfaces and symmetrically disposed; the two side gaps of the two supporting bodies 21, 22 A side sealing device 9, 9' is provided separately.
  • a bottom sealing means 11 is provided between the bottoms of the two support bodies 21, 22 of the coil holder 2 to close the gap between the bottoms 21, 22 of the two supports.
  • the bottom sealing device 11 comprises
  • the supporting plate 111 is disposed between the two supporting bodies 21 and 22 of the steel coil fixing base 2, and the supporting plate 111 is vertically arranged, and a plurality of rollers 112 are evenly spaced apart along the longitudinal direction of the lower sides of the supporting plate 111 to form a slidable mechanism;
  • the sealing plate 113 is horizontally disposed on the top surface of the support plate 111 and has a size corresponding to a gap between the bottoms of the two support bodies 21, 22.
  • the sealing plate 113 is a composite layer structure, and the middle is composed of a heat insulating material felt, and both sides are high temperature resistant steel plates.
  • the end surface of one side of the support plate 111 is provided with an electromagnetic block 114.
  • a metal block corresponding to the electromagnetic block 114 is disposed between the end portions of the two support bodies 21 and 22 of the coil holder 2 .
  • the side sealing device 9 (the side sealing device 9 is taken as an example, the same below) includes
  • the two fixed bottom plates 91, 91' are horizontally disposed on the outer side of the two support bodies 21, 22 of the steel coil fixing base 2, and at the bottom of the gap; the outer side surfaces of the fixed bottom plates 91, 91' are axially spaced apart from each other by a plurality of guide wheels 92. , 92';
  • the two seal members 93, 93' are respectively disposed at the gaps on both sides of the two support bodies 21, 22 of the coil holder 2, and the bottom ends of the seal members 93, 93' are slidably disposed on the guide plate 91.
  • Two racks 941, respectively, are horizontally disposed on the two seals 93, 93', one end of the rack 941 is connected to the seals 93, 93';
  • a drive shaft 942 is horizontally disposed on the other side of the support body 21 with respect to the gap through the two bearing seats 943; a gear 944 is disposed at each end of the drive shaft 942, and the gear 943 is meshed with the rack 941.
  • the bearing block 943 is disposed on one side of the support body 221 through a fixing plate 944.
  • One side of the fixing plate 945 is provided with a through hole 9451 through which the rack 941 passes, and a fixing above the through hole 9451
  • a roller 946 is provided on the outer side of the plate 945 against the top surface of the rack 941.
  • the sealing member 93 is a composite layer structure, the middle is a heat insulating material, and both sides are covered with a high temperature resistant steel plate.
  • the sealing member 93 is a right angle plate structure.
  • the sleeve 12 is disposed at a lower portion of the side of the heat insulating cover 4, and correspondingly, the heat insulating cover tray 3 is provided with a positioning pin 13 that cooperates with the positioning sleeve 12; the positioning pin 13 is preferably a cone.
  • the heat insulating cover 4 is provided with a venting hole and a corresponding exhaust valve 41.
  • the heat insulating cover 4 is a composite structure
  • the outer protective layer is a high-strength steel plate
  • the middle layer is a heat insulating material
  • the inner layer is a high-temperature resistant stainless steel plate.
  • the heat insulating cover 4 is a composite structure including an inner radiation layer 42, an electric heating wire layer 43, an intermediate mesh cover 44, an intermediate heat insulating layer 45, and an outer protective layer 46 in order from the inside to the outside.
  • the heat shield composite structure is fixed by anchor nails 47.
  • the heat insulating cover 4 is a square heat insulating cover or a circular heat insulating cover.
  • the electric heating device 5 is an electric heating wire
  • the temperature sensor 6 is a thermocouple sensor
  • the invention improves the heat treatment of the steel coil after the coiling, and at the same time realizes the purpose of annealing the waste heat of the coil which has just been wound up, and greatly improves the time after the coil is coiled to enter the heat preservation and annealing device.
  • the performance improvement is not sufficient, and the performance of the strip length and width direction fluctuates greatly.

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Abstract

一种热轧在线移动保温热处理工艺及热处理线，热处理工艺包括：板坯经加热、轧制、层冷、卷取至热卷状态，热卷卸卷打捆完毕后在30min内对热卷加装移动式热卷保温热处理装置（40），对热卷进行热处理，并同时在线运至热卷保温处理区域；热处理1-48h后，采用空冷方式冷却后将钢卷送入库。卷取温度控制在250-750℃之间。热处理工艺有效结合热卷卷取工艺，第一时间对热卷进行高效保温热处理，保温处理的热卷随保温装置在线移动，确保时间差异化的热处理工艺需求，可以有效改善产品性能，一次投资低，满足大生产需求，节约能源。

Description

一种热轧在线移动保温热处理工艺及热处理线 技术领域
本发明涉及热轧及热处理工艺，特别涉及一种热轧在线移动保温热处理工艺及热处理线。
背景技术
热轧及冷轧高强钢由于成分设计及强化机理复杂，传统热轧工艺生产时，轧制过程或卷取后的冷却不均匀、冷速过快均会对成品性能造成影响，导致带钢性能波动、板形劣化等问题。为解决该问题，通常采用热卷卷取后入热轧精整库集中保温缓冷(保温墙或保温坑等)或离线热处理(辊底式炉或罩式炉等)方式加以改善，但带来制造成本增加、制造周期延长等问题，且部分方式不能完全达到改善性能及板形质量的目的。
常规的热卷卷后热处理方式有：
1)热卷卷后入精整库，采用保温坑或保温墙进行缓冷处理；
2)热卷卷后入精整库，集中堆放缓冷后，通过开平机组切板，然后通过辊底式炉进行回火处理；
3)热卷卷后送冷轧，通过冷轧罩式炉进行退火处理。
原工艺流程为：加热—轧制—层冷—卷取—离线热处理(保温坑或热处理炉等)。
现有技术的缺点：
对于热卷卷后入精整库，采用保温坑或保温墙缓冷处理方式，由于热卷卷取后至入库时间通常在30～120分钟左右，该过程中热卷空冷状态下的冷却速率较快，带钢内外圈及边中边冷却不均匀已经发生，且保温坑或保温墙内无热源加热，实际缓冷处理对带钢性能、板形质量改善非常有限；
采用辊底式炉回火处理或罩式炉退火处理，可以实现带钢的均匀化热处理，但工程一次投资巨大，而且需要对带钢再次加热，会造成制造成本显著增加，同时延长了产品的制造周期。
目前国内外其他钢厂通常采用入热轧精整库集中保温缓冷(保温墙或保温坑等)或离线热处理(辊底式炉或罩式炉等)方式对热卷进行处理。
如中国专利CN201210338335公开的“一种托辊托盘式金属带卷运输装置”，其采用运输链托盘，对钢卷卷取完毕后进行上卷运输。该装置为只是单独钢卷 运输固定鞍座。不能进行运输途中对钢卷进行在线保温。
中国专利CN201710853613.3公开的“在线保温缓冷装置”，其只存在保温效果，由于底部结构不能完全密封，钢卷保温效果不佳。
日本专利JP2010094710(A)公开的“隧道式保温罩”，增加设置专门的保温坑等产线的造价普遍较高并且改造过程工期长影响正常生产。
韩国专利KR1589913(B1)公开的“移动式隧道保温罩”，虽然实现移动同时实现保温，但是整体移动设备包含在保温腔内对设备减少设备使用寿命。不能实现单个独立保温，保温罩与运输线完美结合。
中国专利CN101413051B公开的“一种热轧带钢深加工处理系统”，其运用保温隧道结构，但是整体移动设备包含在保温腔内对设备减少设备使用寿命。
上述现有技术存在的问题如下：
(1)热轧保温装置存在的最突出问题是带钢卷取后进入保温装置的间隔时间过长，带钢的金相组织转变多已经发生或完成，离线缓冷方式对热卷性能改善的效果不能满足高强钢的品质要求。热卷放置到保温罩内需要吊运20～30分钟时间，钢卷的空冷时间过长，影响保温效果和材料性能。
(2)增加设置专门的保温坑、保温炉、罩式炉、热处理等产线的造价普遍较高并且改造过程工期长影响正常生产。且存在保温效果(温降速率较快)不佳的问题。
(3)保温罩基本上都是离线模式(保温装置静止放置在卷取平台)，钢卷运输吊运打乱产线正常的生产节奏。影响轧钢生产线产能的发挥，实际批量化生产难度大。
(4)采用运输链的半封闭“隧道式”保温或者采用立式运输模式下的保温技术在大生产情况下存在钢卷保温处理时间不足及保温效果不佳等弊端，实际运用难度很大。
发明内容
本发明的目的在于提供一种热轧在线移动保温热处理工艺及热处理线，有效结合热卷卷取工艺温度，第一时间对热卷进行高效保温热处理，保温处理的热卷随保温装置在线移动，确保实现差异化的热处理工艺需求，不仅可以有效改善产品性能，且一次投资低，满足高节奏的大生产需求，节约能源。
为达到上述目的，本发明的技术方案是：
一种热轧在线移动保温热处理工艺，板坯经加热、轧制、层冷、卷取至热卷状态，热卷卸卷打捆完毕后在30min内对热卷加装移动式热卷保温热处理装置，对热卷开始进行热处理，并同时在线运至热卷保温处理区域；热处理时间1～48h后，采用空冷方式冷却后将钢卷送入库；其中，卷取温度控制在250～750℃之间。
优选的，卷取完毕后在10min内对热卷加装移动式热卷保温热处理装置。
优选的，所述移动式热卷保温热处理装置为带保温罩的运输小车。
优选的，所述移动式热卷保温热处理装置内自然温降速率1～10℃/h。
优选的，所述移动式热卷保温热处理装置内设加热和/或抽真空或/和充入惰性气体系统。
传统的热轧及冷轧高强钢多采用固溶强化、细晶强化、相变强化、析出强化等强化机制满足组织性能要求，其成分设计及TMCP工艺均较复杂，强度性能及卷取后性能均匀性与热卷温度的保持和均匀冷却有很大关系，在自然冷却过程中卷取后普遍存在性能全长方向或宽度方向的波动。为本质改善上述问题，目前比较可行的方法是采用离线热处理方式，热卷成卷冷却后，再加热到一定工艺温度后保温处理，通过回火或退火工艺使实现产品性能的改善。
热轧及冷轧高强钢热轧卷取工艺温度通常在250～750℃之间，与离线热处理工艺温度范围相同，该技术路线可以通过精准控制卷取温度，在热卷自然冷却前，通过保温工艺装备实现热卷在合理工艺温度下的在线热处理，通过一定时间的保温处理，实现热卷的回火或退火热处理，其工艺处理效果等同于离线热处理，但较之离线热处理，节省了设备投资、能源消耗，实现了绿色可持续的热处理工艺。
本发明所述的一种热轧在线移动保温热处理线，在热轧钢卷卷取机后的打捆装置至冷轧机组之间设置热处理运输链辊道，该热处理运输链辊道上设置至少一台移动式热卷保温热处理装置，相应的，该热处理运输链辊道两端各设置一台可装卸钢卷至移动式热卷保温热处理装置的吊运装置；所述移动式热卷保温热处理装置上设置可对热轧钢卷进行密闭在线保温的保温罩。
进一步，所述热处理运输链辊道一侧设置一个钢卷保温区，该钢卷保温区设置至少一条连接至所述热处理运输链辊道的保温运输链辊道。
又，所述热处理运输链辊道或保温运输链辊道上设置至少一个热处理工作站，该热处理工作站中设对移动式热卷保温热处理装置上保温罩内部进行加热的加热系统或/和进行气体冷却的保护气体冷却输入系统。
再有，所述热处理运输链辊道对应冷轧机组的一端设置一台将钢卷信息打印在钢卷上的信息编码打印装置。
优选的，所述移动式热卷保温热处理装置，其包括，底板；钢卷固定座，设置于所述底板上端面中央部位；托盘，环形结构，所述托盘水平套设于所述钢卷固定座中部；保温罩，下端开口，其内腔体积大于钢卷；所述保温罩罩设于所述托盘上；电加热装置，设置于所述保温罩内侧壁；温度传感器，设置于所述保温罩内；信息采集控制模块，所述电加热装置、温度传感器电性连接该信息采集控制模块。
优选的，所述移动式热卷保温热处理装置还包括气体保护装置及气体传感器，并分别电性连接该信息采集控制模块。
优选的，所述信息采集控制模块内设有信号发射模块。
优选的，所述钢卷固定座包括并列的两个支撑体，两个支撑体的上端面为斜面，并对称设置；两个支撑体的两侧间隙处分别设置一侧面密封装置。
优选的，所述钢卷固定座的两个支撑体底部之间设底部密封装置，对两个支撑体底部之间的间隙进行封闭。
优选的，所述底部密封装置包括，支撑板，设置于所述钢卷固定座的两个支撑体之间，支撑板竖直布置，支撑板两侧面下部沿长度方向均匀间隔设置若干滚轮，形成可滑动机构；密封板，水平设置于所述支撑板顶面，其大小对应于所述两个支撑体底部之间的间隙。
优选的，所述支撑板一侧端面设电磁块，相应的，所述钢卷固定座的两个支撑体一侧端部之间设与电磁块配合的金属挡块。
优选的，所述侧面密封装置包括，
两固定底板，分别水平设置于所述钢卷固定座的两个支撑体外侧、间隙处底部；固定底板外侧面沿轴向间隔设置若干导轮；
两密封件，分别设置于所述钢卷固定座的两个支撑体的两侧间隙处，密封件底端滑设于所述固定底板的导轮上；
驱动机构，包括，两齿条，分别水平设置于所述两密封件上，齿条一端连接密封件；一驱动轴，通过两轴承座水平设置于所述支撑体相对于间隙处的另一侧；驱动轴两端分别设置一齿轮，该齿轮与齿条啮合。
优选的，所述轴承座通过一固定板设置于所述支撑体一侧，该固定板的一侧设供所述齿条穿过的通孔，通孔上方的固定板外侧面设一与供齿条顶面抵靠的滚轮。
优选的，所述密封板、密封件为复合层结构，中间为保温材料毡，两侧为耐高温钢板包覆。
优选的，所述密封件为直角板结构。
优选的，所述保温罩侧面下部设定位套，对应的，所述保温罩托盘上设与该定位套配合的定位销；所述定位销优选为锥形体。
优选的，所述保温罩上设透气孔及相应的排气阀门。
优选的，所述保温罩为复合结构，外保护层为高强钢板，中间层为保温材料，内层为耐高温不锈钢板。
优选的，所述保温罩为复合结构，其自内向外依次包括内部辐射层、电加热丝层、中间网罩、中间保温层、外保护层。
优选的，所述电加热装置为电加热丝，所述温度传感器为热电偶式传感器。
在本发明热轧在线移动保温热处理线中：
带钢卷取后钢卷运输小车将钢卷运上托盘后，在托盘上加上保温装置，第一时间对钢卷进行保温。保温罩以及钢卷随着运输链辊道正常运行，不影响后续钢卷的生产运行，在运输过程中实现热处理。
运输小车横移辊道装置：将空载的不带保温罩的运输小车装置从回程运输链辊道移送到热处理运输链辊道中，实现运输小车装置移送，保证运输小车接下来承接卷曲完毕后的热轧钢卷。
保温罩吊运装置将回程运输链辊道上面运动的带保温罩的运输小车装置上的保温罩吊起，然后将保温罩移动到热处理运输链辊道上面等待。当卷曲完毕后的热轧钢放置到运输小车装置上，保温罩上移送起吊运输装置将保温罩自动放置在运输小车装置上面，实现对钢卷曲完毕后的热轧钢卷的保温。
带保温罩的运输小车装置可以实现对钢卷的在线热处理要求。运输小车装置可以在运输链辊道上面实现运动，将热轧卷曲完毕后的钢卷运送至运输链保温区域实现热处理。保温罩、运输小车装置可以使用保温罩上移送起吊运输装置、保温罩下移送起吊运输装置实现脱离和结合。
单个保温罩区域：钢卷在带保温罩的运输小车装置进行保温热处理。通过控制带保温罩的运输小车装置在热处理运输链辊道运行的时间达到热处理的目的。
单个保温罩区域布置需要与带保温罩的运输小车装置相结合，同时考虑需要保温的热轧钢卷的数量和时间。钢卷热卷保温罩n，其中钢卷运输小车数量为＞n+1在产线上。保温罩与运输小车装置脱离后，在保温罩下移送起吊运输 装置处保温罩随运输小车在回程运输链辊道回到上移送起吊运输装置处。
本发明可对于特种批次的热轧带钢按需进行深入加工特殊处理，在保温区域增加热处理工作站。热处理工作站中设有保温罩内部加热系统和保护气体冷却输入系统。
对于需要加热的热轧带钢，热轧带钢运输小车将热轧钢卷运输到工作站中，内部加热系统将对热轧带钢进行加热，利用相关热处理曲线和工艺要求对钢卷进行二次加热达到改善热轧带钢的整体性能。
对于需要气体保护和快速控制能冷却的热轧带钢，将进入处理工作站的带保温罩的运输小车装置接入保护气体冷却输入系统。通过对控制接入的保护气体的气量和比列达到控制控制保温罩装置内部温度的控制要去。利用相关热处理曲线和工艺要求对钢卷进行二次加热达到改善热轧带钢的整体性能。
对于热轧带钢保温罩脱离后，热轧带钢运输小车将热轧带钢运输至信息编码打印处，将钢卷信息打印在钢卷上。保证保温罩脱离后的钢卷携带钢卷信息后进入接下的工艺生产线路中。
信息打印处理完成后将热处理完毕后的钢卷通过运输链辊道运输至钢卷库，或者利用运输链系统运输到生产线下道工序生产。
本发明处理线还设热处理工作站、信息编码打印装置；热处理工作站对于特种批次的热轧带钢需要进行深入加工特殊处理，在保温区域增加热处理工作站。热处理工作站中设有保温罩内部加热系统和保护气体冷却输入系统。
信息编码打印装置：热轧带钢运输小车将热轧带钢运输至信息编码打印处，将钢卷信息打印在钢卷上。
对于热处理完毕后的钢卷随运输链辊道运输到钢卷存放库，对于需要冷轧或者平整切边的钢卷利用运输小车旋转辊道装置转向到下道工序的运输链辊道上。
在线通过钢卷运输设备完成对钢卷的保温、均热、缓冷是一项首创的技术。保温罩单个独立，每个钢卷都可以在运输链运输过程中进行温度控制，节省时间同时提高生产节奏和效率。
本发明的有益效果：
本发明热轧在线移动保温热处理工艺将热卷卷取后直接通过保温装置实现热卷在线移动热处理，用以替代传统离线热处理，起到改善产品性能、板形质量以及节能降耗的目的。
通过热轧及冷轧高强钢热卷“在线模式”保温热处理，避免了卷取后空冷 对钢卷性能的影响，实现了热轧及冷轧高强钢性能的改善。
本发明对卷取后的热轧钢卷在运输链运输的过程中实现在线热处理，在钢卷出卷取机后卷曲完毕后，马上给钢卷装上移动式热卷保温热处理装置，利用钢卷本身的热量对钢卷实施均热、缓冷的热处理工艺，达到高效、节能和提供成材率的目的。
本发明产线第一时间对卷取后带钢钢卷的保温处理，极大改善钢卷卷取后到进入缓冷装置时间过长带来的性能改善不充分以及带钢长度及宽度方向性能波动大的难题。避免导致冷轧生产时出现轧制力剧烈波动、冷轧成品厚度超公差标准，增加冷轧酸连轧机组的轧制稳定性，增加冷轧超高强钢成材率。
1.实时性：热卷卷取后直接实现保温处理，间隔时间短。
2.在线性：热卷保温在运输链上直接实现，无冗余工艺。
3.经济性：利用钢卷余热实现卷后热处理，节能环保。
4.工艺性：保温效果理想，可满足高强钢保温工艺需求。
附图说明
图1、图2为在线移动保温对钢卷性能影响的示意图。
图3为本发明热轧带钢热处理线实施例的示意图。
图4为本发明热轧带钢热处理线实施例的示意图。
图5为本发明热轧带钢热处理线实施例的示意图。
图6为本发明所述移动式热卷保温热处理装置实施例1的结构示意图。
图7为本发明所述移动式热卷保温热处理装置实施例1的侧视图。
图8本发明所述移动式热卷保温热处理装置实施例2的正视图。
图9为本发明所述移动式热卷保温热处理装置实施例3的正视图。
图10为本发明所述移动式热卷保温热处理装置实施例中保温罩的局部剖视图。
图11为本发明所述移动式热卷保温热处理装置实施例1的立体图。
图12为本发明所述移动式热卷保温热处理装置实施例1的正视图。
图13为本发明所述移动式热卷保温热处理装置实施例1中底部密封装置的立体图。
图14为本发明所述移动式热卷保温热处理装置实施例1的正视图。
图15为图14的侧视图。
图16为本发明所述移动式热卷保温热处理装置实施例1的仰视立体图。
图17为图16的A部放大示意图。
具体实施方式
本发明的一种热轧在线移动保温热处理工艺，板坯经加热、轧制、层冷、卷取至热卷状态，热卷卸卷打捆完毕后在30min内对热卷加装移动式热卷保温热处理装置，对热卷开始进行热处理，并同时在线运至热卷保温处理区域；热处理时间1～48h后，采用空冷方式冷却后将钢卷送入库；其中，卷取温度控制在250～750℃之间。
优选的，卷取完毕后在10min内对热卷加装移动式热卷保温热处理装置。
优选的，所述移动式热卷保温热处理装置为带保温罩的运输小车。
优选的，所述移动式热卷保温热处理装置内自然温降速率1～10℃/h。
优选的，所述移动式热卷保温热处理装置内设加热和/或抽真空或/和充入惰性气体系统。
参见图1、图2，本发明通过热轧及冷轧高强钢热卷“在线模式”保温热处理，避免了卷取后空冷对钢卷性能的影响，实现了热轧及冷轧高强钢性能的改善。
参见图3，本发明的一种热轧带钢热处理线，在热轧钢卷卷取机10后的打捆装置20至冷轧机组之间设置热处理运输链辊道30，该热处理运输链辊道30上设置至少一台移动式热卷保温热处理装置40，相应的，该热处理运输链辊道30两端各设置一台可装卸钢卷至移动式热卷保温热处理装置的吊运装置50、50’；所述移动式热卷保温热处理装置40上设置可对热轧钢卷进行密闭在线保温的保温罩。
参见图4，所述热处理运输链辊道30或保温运输链辊道70上设置至少一个热处理工作站80，该热处理工作站80中设对移动式热卷保温热处理装置上保温罩内部进行加热的加热系统或/和进行气体冷却的保护气体冷却输入系统；90为旋转辊道。
参见图5，所述热处理运输链辊道10一侧设置一个钢卷保温区60，该钢卷保温区60设置至少一条连接至所述热处理运输链辊道的保温运输链辊道70、吊运装置50”。
参见图5，所述热处理运输链辊道30对应冷轧机组的一端设置一台将钢卷信息打印在钢卷上的信息编码打印装置90。
参见图5～图17，本发明所述的移动式热卷保温热处理装置40，其包括，
底板1；
钢卷固定座2，设置于所述底板1上端面中央部位；
托盘3，环形结构，所述托盘3水平套设于所述钢卷固定座2中部；
保温罩4，下端开口，其内腔体积大于钢卷100；该保温罩4罩设于所述托盘3上；
电加热装置5，设置于所述保温罩4内侧壁；
温度传感器6，设置于所述保温罩4内；
信息采集控制模块7，所述电加热装置5、温度传感器5电性连接该信息采集控制模块7。
进一步，还包括气体保护装置及气体传感器8、8’，并分别电性连接该信息采集控制模块7。
优选的，所述信息采集控制模块7内设有信号发射模块。
优选的，所述钢卷固定座2包括并列的两个支撑体21、22，两个支撑体21、22的上端面为斜面，并对称设置；两个支撑体21、22的两侧间隙处分别设置一侧面密封装置9、9’。
又，所述钢卷固定座2的两个支撑体21、22底部之间设底部密封装置11，对两个支撑体底部21、22之间的间隙进行封闭。
优选的，所述底部密封装置11包括，
支撑板111，设置于所述钢卷固定座2的两个支撑体21、22之间，支撑板111竖直布置，支撑板111两侧面下部沿长度方向均匀间隔设置若干滚轮112，形成可滑动机构；
密封板113，水平设置于所述支撑板111顶面，其大小对应于所述两个支撑体21、22底部之间的间隙。
优选的，所述密封板113为复合层结构，中间为保温材料毡组成，两侧为耐高温钢板。
优选的，所述支撑板111一侧端面设电磁块114，相应的，所述钢卷固定座2的两个支撑体21、22一侧端部之间设与电磁块114配合的金属挡块。
参见图15～图17，所述侧面密封装置9(以侧面密封装置9为例，下同)包括，
两固定底板91、91’，分别水平设置于所述钢卷固定座2的两个支撑体21、22外侧、间隙处底部；固定底板91、91’外侧面沿轴向间隔设置若干导轮92、92’；
两密封件93、93’，分别设置于所述钢卷固定座2的两个支撑体21、22的两侧间隙处，密封件93、93’底端滑设于所述固定底板91的导轮92、92’上；
驱动机构94，包括，
两齿条941，分别水平设置于所述两密封件93、93’上，齿条941一端连接密封件93、93’；
一驱动轴942，通过两轴承座943水平设置于所述支撑体21相对于间隙处的另一侧；驱动轴942两端分别设置一齿轮944，该齿轮943与齿条941啮合。
优选的，所述轴承座943通过一固定板944设置于所述支撑体221一侧，该固定板945的一侧设供所述齿条941穿过的通孔9451，通孔9451上方的固定板945外侧面设一与供齿条941顶面抵靠的滚轮946。
优选的，所述密封件93为复合层结构，中间为保温材料，两侧为耐高温钢板包覆。
优选的，所述密封件93为直角板结构。
优选的，所述保温罩4侧面下部设定位套12，对应的，所述保温罩托盘3上设与该定位套12配合的定位销13；所述定位销13优选为锥形体。
优选的，所述保温罩4上设透气孔及相应的排气阀门41。
优选的，所述保温罩4为复合结构，外保护层为高强钢板，中间层为保温材料，内层为耐高温不锈钢板。
优选的，所述保温罩4为复合结构，其自内向外依次包括内部辐射层42、电加热丝层43、中间网罩44、中间保温层45、外保护层46。所述保温罩复合结构采用锚固钉47固定。
参见图5、图6，所述保温罩4为方形保温罩或圆形保温罩。
优选的，所述电加热装置5为电加热丝，所述温度传感器6为热电偶式传感器。
本发明对卷取后带钢钢卷的保温处理，同时实现对刚刚完成卷取的钢卷进行余热利用达到退火处理的目的，极大改善钢卷卷取后到进入保温、退火装置时间过长带来的性能改善不充分，以及带钢长度及宽度方向性能波动大的难题。
对于特种批次的热轧带钢需要进行深入加工等特殊处理，设在保温罩内部的加热装置和保护气体冷却输入系统在必要状态下可以配合实现对温度控制。

Claims (24)

  1. 一种热轧在线移动保温热处理工艺，其特征是，板坯经加热、轧制、层冷、卷取至热卷状态，热卷卸卷打捆完毕后在30min内对热卷加装移动式热卷保温热处理装置，对热卷开始进行热处理，并同时在线运至热卷保温处理区域；热处理时间1～48h后，采用空冷方式冷却后将钢卷送入库；其中，卷取温度控制在250～750℃之间。
  2. 如权利要求1所述的热轧在线移动保温热处理工艺，其特征是，卷取完毕后在10min内对热卷加装移动式热卷保温热处理装置。
  3. 如权利要求1所述的热轧在线移动保温热处理工艺，其特征是，所述移动式热卷保温热处理装置为带保温罩的运输小车。
  4. 如权利要求1所述的热轧在线移动保温热处理工艺，其特征是，所述移动式热卷保温热处理装置内自然温降速率1～10℃/h。
  5. 如权利要求1或2或3所述的热轧在线移动保温热处理工艺，其特征是，所述移动式热卷保温热处理装置内设加热和/或抽真空或/和充入惰性气体系统。
  6. 一种热轧在线移动保温热处理线，其特征在于，在热轧钢卷卷取机后的打捆装置至冷轧机组之间设置热处理运输链辊道，该热处理运输链辊道上设置至少一台移动式热卷保温热处理装置，相应的，该热处理运输链辊道两端各设置一台可装卸钢卷至移动式热卷保温热处理装置的吊运装置；所述移动式热卷保温热处理装置上设置可对热轧钢卷进行密闭在线保温的保温罩。
  7. 如权利要求6所述的热轧在线移动保温热处理线，其特征在于，所述热处理运输链辊道一侧设置一个钢卷保温区，该钢卷保温区设置至少一条连接至所述热处理运输链辊道的保温运输链辊道。
  8. 如权利要求6或所述的热轧在线移动保温热处理线，其特征在于，所述热处理运输链辊道或保温运输链辊道上设置至少一个热处理工作站，该热处理工作站中设对移动式热卷保温热处理装置上保温罩内部进行加热的加热系统或/和进行气体冷却的保护气体冷却输入系统。
  9. 如权利要求6所述的热轧在线移动保温热处理线，其特征在于，所述热处理运输链辊道对应冷轧机组的一端设置一台将钢卷信息打印在钢卷上的信息编码打印装置。
  10. 如权利要求6或8所述的热轧在线移动保温热处理线，其特征在于，所 述移动式热卷保温热处理装置，其特征在于，包括，
    底板；
    钢卷固定座，设置于所述底板上端面中央部位；
    托盘，环形结构，所述托盘水平套设于所述钢卷固定座中部；
    保温罩，下端开口，其内腔体积大于钢卷；该保温罩罩设于所述托盘上；
    电加热装置，设置于所述保温罩内侧壁；
    温度传感器，设置于所述保温罩内；
    信息采集控制模块，所述电加热装置、温度传感器电性连接该信息采集控制模块。
  11. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述移动式热卷保温热处理装置还包括气体保护装置及气体传感器，并分别电性连接该信息采集控制模块。
  12. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述信息采集控制模块内设有信号发射模块。
  13. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述钢卷固定座包括并列的两个支撑体，两个支撑体的上端面为斜面，并对称设置；两个支撑体的两侧间隙处分别设置一侧面密封装置。
  14. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述钢卷固定座的两个支撑体底部之间设底部密封装置，对两个支撑体底部之间的间隙进行封闭。
  15. 如权利要求14所述的热轧在线移动保温热处理线，其特征在于，所述底部密封装置包括，
    支撑板，设置于所述钢卷固定座的两个支撑体之间，支撑板竖直布置，支撑板两侧面下部沿长度方向均匀间隔设置若干滚轮，形成可滑动机构；
    密封板，水平设置于所述支撑板顶面，其大小对应于所述两个支撑体底部之间的间隙。
  16. 如权利要求15所述的热轧在线移动保温热处理线，其特征在于，所述支撑板一侧端面设电磁块，相应的，所述钢卷固定座的两个支撑体一侧端部之间设与电磁块配合的金属挡块。
  17. 如权利要求13所述的热轧在线移动保温热处理线，其特征在于，所述侧面密封装置包括，
    两固定底板，分别水平设置于所述钢卷固定座的两个支撑体外侧、间隙处底 部；固定底板外侧面沿轴向间隔设置若干导轮；
    两密封件，分别设置于所述钢卷固定座的两个支撑体的两侧间隙处，密封件底端滑设于所述固定底板的导轮上；
    驱动机构，包括，
    两齿条，分别水平设置于所述两密封件上，齿条一端连接密封件；
    一驱动轴，通过两轴承座水平设置于所述支撑体相对于间隙处的另一侧；驱动轴两端分别设置一齿轮，该齿轮与齿条啮合。
  18. 如权利要求17所述的热轧在线移动保温热处理线，其特征在于，所述轴承座通过一固定板设置于所述支撑体一侧，该固定板的一侧设供所述齿条穿过的通孔，通孔上方的固定板外侧面设一与供齿条顶面抵靠的滚轮。
  19. 如权利要求15或17所述的热轧在线移动保温热处理线，其特征在于，所述密封板、密封件为复合层结构，中间为保温材料毡，两侧为耐高温钢板包覆。
  20. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述保温罩侧面下部设定位套，对应的，所述保温罩托盘上设与该定位套配合的定位销；所述定位销优选为锥形体。
  21. 如权利要求10或20所述的热轧在线移动保温热处理线，其特征在于，所述保温罩上设透气孔及相应的排气阀门。
  22. 如权利要求10或20或21所述的热轧在线移动保温热处理线，其特征在于，所述保温罩为复合结构，外保护层为高强钢板，中间层为保温材料，内层为耐高温不锈钢板。
  23. 如权利要求10或20或21所述的热轧在线移动保温热处理线，其特征在于，所述保温罩为复合结构，其自内向外依次包括内部辐射层、电加热丝层、中间网罩、中间保温层、外保护层。
  24. 如权利要求10所述的热轧在线移动保温热处理线，其特征在于，所述电加热装置为电加热丝，所述温度传感器为热电偶式传感器。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113355496A (zh) * 2021-06-04 2021-09-07 东北大学 一种不锈钢热轧卷轧制余热在线固溶退火工艺

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020076289A1 (en) * 2000-12-15 2002-06-20 National Steel Car Limited Insulated triple trough coil car
CN101413051A (zh) 2008-06-20 2009-04-22 北京首钢国际工程技术有限公司 在线热处理线材收集运输系统
JP2010094710A (ja) 2008-10-16 2010-04-30 Kobe Steel Ltd コイル徐冷装置
CN202316643U (zh) * 2011-11-14 2012-07-11 天津市中重科技工程有限公司 双工位无芯移送式热卷箱
CN103057842A (zh) * 2013-01-15 2013-04-24 无锡亚中智能装备有限公司 车载式硅钢卷恒温装置
CN203064459U (zh) * 2013-01-15 2013-07-17 无锡亚中智能装备有限公司 车载式硅钢卷恒温装置
CN203497055U (zh) * 2013-09-23 2014-03-26 上海宝冶集团有限公司 双向保温挂车
KR101589913B1 (ko) 2014-12-10 2016-02-01 주식회사 포스코 Ahss 열연코일의 열처리 방법 및 이를 이용한 냉간 압연방법
CN206447906U (zh) * 2017-01-05 2017-08-29 鞍钢集团工程技术有限公司 一种移动式缓冷间
CN107470377A (zh) * 2017-09-20 2017-12-15 上海贺力液压机电有限公司 钢带制造流水线在线保温缓冷装置
CN207170521U (zh) * 2017-09-20 2018-04-03 上海贺力液压机电有限公司 钢带制造流水线在线保温缓冷装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO75367A (ro) * 1977-11-25 1980-11-30 Alleghany Ludlum Industries,Inc.,Us Cuptor pentru recoacerea benzilor metalice sub forma de colaci
JPS5837128A (ja) * 1981-08-26 1983-03-04 Nippon Kokan Kk <Nkk> 連続焼鈍用Ａｌキルド鋼板の製造方法
JPS60110816A (ja) * 1983-11-17 1985-06-17 Nippon Steel Corp 熱延鋼帯の軟化方法
JPS60125329A (ja) * 1983-12-07 1985-07-04 Kawasaki Steel Corp 熱間圧延鋼帯の製造方法
JPS60218431A (ja) * 1984-04-12 1985-11-01 Sumitomo Metal Ind Ltd 熱間鋼帯コイルの冷却方法
JPS61159534A (ja) * 1985-01-05 1986-07-19 Nippon Steel Corp 電縫鋼管用熱延鋼帯の製造方法
JP3449310B2 (ja) 1999-09-02 2003-09-22 Ｊｆｅスチール株式会社 酸洗性とコイル内材質均一性に優れた熱延鋼板の製造方法
JP3744279B2 (ja) * 1999-09-09 2006-02-08 Ｊｆｅスチール株式会社 スケール密着性に優れた高炭素熱延鋼板の製造方法
CN104087839B (zh) * 2014-07-18 2016-05-25 武汉钢铁(集团)公司 热轧超薄激光焊接锯片基体用钢及生产方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020076289A1 (en) * 2000-12-15 2002-06-20 National Steel Car Limited Insulated triple trough coil car
CN101413051A (zh) 2008-06-20 2009-04-22 北京首钢国际工程技术有限公司 在线热处理线材收集运输系统
JP2010094710A (ja) 2008-10-16 2010-04-30 Kobe Steel Ltd コイル徐冷装置
CN202316643U (zh) * 2011-11-14 2012-07-11 天津市中重科技工程有限公司 双工位无芯移送式热卷箱
CN103057842A (zh) * 2013-01-15 2013-04-24 无锡亚中智能装备有限公司 车载式硅钢卷恒温装置
CN203064459U (zh) * 2013-01-15 2013-07-17 无锡亚中智能装备有限公司 车载式硅钢卷恒温装置
CN203497055U (zh) * 2013-09-23 2014-03-26 上海宝冶集团有限公司 双向保温挂车
KR101589913B1 (ko) 2014-12-10 2016-02-01 주식회사 포스코 Ahss 열연코일의 열처리 방법 및 이를 이용한 냉간 압연방법
CN206447906U (zh) * 2017-01-05 2017-08-29 鞍钢集团工程技术有限公司 一种移动式缓冷间
CN107470377A (zh) * 2017-09-20 2017-12-15 上海贺力液压机电有限公司 钢带制造流水线在线保温缓冷装置
CN207170521U (zh) * 2017-09-20 2018-04-03 上海贺力液压机电有限公司 钢带制造流水线在线保温缓冷装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113355496A (zh) * 2021-06-04 2021-09-07 东北大学 一种不锈钢热轧卷轧制余热在线固溶退火工艺

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