WO2024036711A1 - Système et procédé multifonctionnels de production de traitement thermique de feuille ou bande d'acier à haute résistance - Google Patents

Système et procédé multifonctionnels de production de traitement thermique de feuille ou bande d'acier à haute résistance Download PDF

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Publication number
WO2024036711A1
WO2024036711A1 PCT/CN2022/122405 CN2022122405W WO2024036711A1 WO 2024036711 A1 WO2024036711 A1 WO 2024036711A1 CN 2022122405 W CN2022122405 W CN 2022122405W WO 2024036711 A1 WO2024036711 A1 WO 2024036711A1
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heat treatment
steel
steel plate
strip
plate
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PCT/CN2022/122405
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English (en)
Chinese (zh)
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许立雄
廖砚林
马瑞杰
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中冶南方工程技术有限公司
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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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising

Definitions

  • the invention belongs to the technical field of steel heat treatment, and specifically relates to a multifunctional high-strength steel plate and strip heat treatment production system and a high-strength steel plate and strip heat treatment production method based on the multifunctional high-strength steel plate and strip heat treatment production system.
  • the mainstream domestic high-strength steel heat treatment production processes are mainly off-line quenching and tempering (FQT) process or direct quenching + off-line tempering (DQT) process.
  • FQT off-line quenching and tempering
  • DQT direct quenching + off-line tempering
  • the invention relates to a multifunctional high-strength steel plate and strip heat treatment production system and a high-strength steel plate and strip heat treatment production method based on the multifunctional high-strength steel plate and strip heat treatment production system, which can at least solve some of the defects of the existing technology.
  • the invention relates to a multifunctional high-strength steel plate and strip heat treatment production system, which includes a preparation unit, a high-temperature heat treatment unit, a low-temperature heat treatment unit and a product collection unit connected in sequence;
  • the preparation unit includes an uncoiling device and a first shearing device
  • the high-temperature heat treatment unit includes a first heating device, a first cooling device, a second shearing device and a first stacker connected in sequence;
  • the low-temperature heat treatment unit includes at least one group of low-temperature heat treatment mechanisms, and the low-temperature heat treatment mechanism includes a second heating device and a second cooling device connected in sequence; when there are multiple groups of low-temperature heat treatment mechanisms, each low-temperature heat treatment mechanism is arranged in parallel;
  • the first shearing device is connected to the first heating device through a steel conveying channel, and the first stacker is connected to each of the second heating devices through a steel plate transfer device; each of the second cooling devices The devices are all connected to the product collection unit.
  • At least one first steel plate on-line station is provided on the steel conveying channel between the first shearing device and the first heating device, and the first steel plate on-line station is provided with There is a first steel plate on-line device capable of performing steel plate off-line or steel plate on-line operations on the steel conveying channel.
  • the product collection unit includes a finishing device and a steel plate stacking section.
  • Each of the second cooling devices is connected to the inlet of the finishing device, and the outlet of the finishing device Connected with the steel plate stacking section.
  • each second cooling device is also connected to the steel plate stacking section through a bypass roller.
  • the two ends of the bypass roller are respectively located on the feeding side and the finishing device. Discharge side.
  • the steel plate conveying roller on the feed side of the finishing device is provided with a steel plate on-line station and is equipped with a steel plate on-line device.
  • each second heating device is equipped with a feeding roller, and the steel plate transfer device is respectively connected with each of the feeding rollers; there is a second steel plate up and down line on the feeding roller.
  • the second steel plate on-line and off-line station is provided with a second steel plate on-line and off-line device capable of performing steel plate off-line and steel plate on-line operations on the feed roller.
  • the invention also relates to a heat treatment production method of high-strength steel plate and strip, which is implemented based on the above-mentioned multi-functional high-strength steel plate and strip heat treatment production system;
  • the method includes a coil-plate continuous heat treatment mode and a plate-plate continuous heat treatment mode;
  • the raw steel coil is uncoiled by the uncoiling device, it passes through the first shearing device, and after being processed by the first heating device and the first cooling device, it passes through the The second shearing device cuts into plates, and the sheared steel plates are processed by the low-temperature heat treatment unit and then enter the product collection unit;
  • the raw steel coil is uncoiled by the uncoiling device, it is sheared into plates by the first shearing device, and the sheared steel plates are passed through the first heating device and the third After being processed by a cooling device, the air passes through the second shearing device, is processed by the low-temperature heat treatment unit, and then enters the product collection unit.
  • the above method also includes a plate-plate off-line heat treatment mode
  • the plate-to-plate offline heat treatment mode includes:
  • the raw steel coil is uncoiled by the uncoiling device, it is cut into plates by the first shearing device, and the sheared steel plates are temporarily stored off the line; according to the production schedule, the temporarily stored steel plates are brought online and then go through the said After being processed by the first heating device and the first cooling device, the air passes through the second shearing device, is processed by the low-temperature heat treatment unit, and then enters the product collection unit;
  • the steel plates transported from the upstream are first offline and temporarily stored.
  • the temporarily stored steel plates are brought online, and then processed by the second heating device and the second cooling device before entering the product. Collect the crew.
  • the product collection unit includes a finishing device and a steel plate stacking section
  • the product collection unit has at least one of the following steel plate finishing modes:
  • Steel plate continuous finishing mode in which the steel plates transported by the low-temperature heat treatment unit are collected through the steel plate stacking section after being finished by the finishing device;
  • Steel plate offline finishing mode in which the outer steel plate of the unit is online, and after finishing treatment by the finishing device, it is collected through the steel plate stacking section.
  • the method includes at least one of the following quenching and tempering heat treatment processes, quenching heat treatment processes, tempering heat treatment processes and normalizing heat treatment processes;
  • the quenching and tempering heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T1 at the predetermined heating speed V1 in the first heating device, and maintained for a time t1 to austenitize the steel structure;
  • the steel output from the first heating device is cooled to room temperature in the first cooling device at a predetermined cooling rate V2 to obtain a quenched martensite structure in the steel;
  • the steel plate output from the high-temperature heat treatment unit is heated to a predetermined temperature T2 in the second heating device and kept for a time t2 to obtain a tempered martensite structure in the steel;
  • the quenching heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T3 at the predetermined heating speed V3 in the first heating device, and maintained for a time of t3 to austenitize the steel structure;
  • the steel output from the first heating device is cooled to room temperature in the first cooling device at a predetermined cooling rate V4 to obtain a quenched martensite structure in the steel;
  • the normalizing heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T4 at the predetermined heating speed V5 in the first heating device, and maintained for a time of t4 to austenitize the steel structure;
  • the steel output from the first heating device is cooled to room temperature in the first cooling device at a predetermined cooling rate V6 to obtain a normalized structure in the steel;
  • the tempering heat treatment process includes the following steps:
  • the steel is heated to a predetermined temperature T5 by the first heating device and held for a time of t5 to obtain a tempered martensite structure in the steel, and then cooled to room temperature in the first cooling device to obtain the target product;
  • the steel is heated to a predetermined temperature T5 through the second heating device and held for a time of t5 to obtain a tempered martensite structure in the steel, and then cooled to room temperature in the second cooling device to obtain the target product.
  • the present invention can realize production modes such as high-strength steel coil-plate continuous heat treatment and high-strength steel plate-plate continuous heat treatment, significantly improve production efficiency, production flexibility and operational reliability, and improve thin-specification high-strength steel.
  • the plate shape reduces the intermediate storage and transportation costs of steel plates, and reduces unit process costs and energy consumption.
  • the invention can be applied to the production of modulated heat treatment, quenching heat treatment, tempering heat treatment and normalizing heat treatment of steel. It has the characteristics of multi-channel, multi-mode and multi-function.
  • One production system can meet the production of multi-variety and multi-standard products. It is beneficial to steel mills to reduce one-time project investment.
  • the present invention connects each unit in series and is independent of each other, so as to realize continuous production and fully utilize the production capacity and efficiency of each unit and core single equipment.
  • Figure 1 is a schematic structural diagram of a multifunctional high-strength steel plate and strip heat treatment production system provided by an embodiment of the present invention
  • Figure 2 is a schematic flow chart of the heat treatment production method of high-strength steel plate and strip provided by the embodiment of the present invention
  • Figure 3 is a schematic structural diagram of a strip cutting device provided in Embodiment 3 of the present invention.
  • Figure 4 is a schematic structural diagram of a strip conveying device provided in Embodiment 3 of the present invention.
  • Figure 5 is a plan view of a strip conveying device provided in Embodiment 3 of the present invention.
  • Figure 6 is a schematic structural diagram of a strip pressing mechanism provided in Embodiment 3 of the present invention.
  • Figure 7 is a schematic diagram of the arrangement of the guide plate on the compression frame provided by Embodiment 3 of the present invention.
  • Figure 8 is a schematic diagram of the deep bending roller body provided in Embodiment 4 of the present invention in a belt-threading position;
  • Figure 9 is a schematic diagram of the state of the deep bending roller provided by Embodiment 4 of the present invention in which the roller body is in the deep bending position;
  • Figure 10 is a schematic diagram of the state of the deep bending roller body provided in Embodiment 4 of the present invention in the standby position;
  • Figure 11 is a schematic structural diagram of a deep bending roller provided in Embodiment 4 of the present invention.
  • Figure 12 is a schematic structural diagram of a tape threading guide plate provided in Embodiment 4 of the present invention.
  • the embodiment of the present invention provides a multifunctional high-strength steel plate and strip heat treatment production system, including a preparation unit, a high-temperature heat treatment unit, a low-temperature heat treatment unit and a product collection unit connected in sequence;
  • the preparation unit includes an uncoiling device 11 and a first Shearing device 13;
  • the high-temperature heat treatment unit includes a first heating device 22, a first cooling device 23, a second shearing device 24 and a first stacker 25 connected in sequence;
  • the low-temperature heat treatment unit includes at least one group of low-temperature heat treatment units.
  • the low-temperature heat treatment mechanism includes a second heating device 41 and a second cooling device 42 connected in sequence; when there are multiple groups of low-temperature heat treatment mechanisms, each low-temperature heat treatment mechanism is arranged in parallel; wherein the first shearing device 13 passes The steel conveying channel is connected to the first heating device 22, and the first stacker 25 is connected to each of the second heating devices 41 through the steel plate transfer device 3; each of the second cooling devices 42 is connected to the Product collection unit connection.
  • the above-mentioned uncoiling device 11 is used for uncoiling steel coils, and preferably adopts a dual-channel uncoiling method, which can reduce the downtime for coil change at the entrance section and improve production efficiency.
  • a rough straightening device 12 is arranged on the outlet side of the uncoiling device 11, which can be used to straighten the steel coil and straighten the continuous strip, and can remove most of the oxide scale on the surface of the strip, and initially improve the quality of the strip. Board shape and surface quality.
  • the rough straightening device 12 can use one or more of a pinch straightening machine, a multi-roller straightening machine, and a brush roller; considering that the high-strength steel plate strip has poor plasticity, the multi-roller straightening machine can use a tension roller. Straightening, through the offset of the neutral layer, increases the plastic deformation rate, reduces the maximum elongation of the surface of the strip, and prevents cracks on the surface of the strip during the straightening process.
  • the above-mentioned first shearing device 13 can be used for cutting the head and tail of the strip, and can realize shearing operations such as cutting the continuous strip to length.
  • the above preparation unit also includes a descaling device 14, which is used to further remove iron oxide scale on the surface of the strip or steel plate, including one or more of a shot blasting machine and a brush roller; the descaling device 14 It can be arranged between the rough straightening device 12 and the first shearing device 13 , or it can be arranged on the outlet side of the first shearing device 13 .
  • the shot blasting machine sprays cast steel shots on the surface of the strip at high speed to remove the oxide scale on the surface of the strip, so that the strip has good surface quality before entering the heating furnace.
  • the inlet and outlet of the shot blasting machine are equipped with high-speed air curtains to prevent waste shot materials from overflowing. ; When the shot blasting machine and brush roller are set up at the same time, the brush roller is arranged at the outlet of the shot blasting machine to remove residual steel shot and oxide scale floating dust on the surface of the strip steel.
  • the steel conveying channel between the first shearing device 13 and the first heating device 22 is provided with at least one first steel plate on-line and on-line station.
  • the first steel plate on-line and on-line station is provided.
  • the work station is provided with a first steel plate on-line device 15 capable of performing steel plate off-line or steel plate on-line operations on the steel material conveying channel.
  • the steel conveying channel may be a conveying roller, etc.; the first steel plate loading and unloading device 15 may be a steel plate lifting device, such as a vacuum suction cup crane or a high-precision disk crane.
  • a deviation correction device 21 is provided at the entrance side of the first heating device 22, which can prevent the strip from deflecting in the first heating device 22.
  • the deviation correction device 21 can also establish tension to ensure a continuous strip.
  • the strip can be smoothly passed through during steel production and the shape of the strip in the first heating device 22 can be improved.
  • the correction device 21 is preferably in the form of a pinch correction roller, and the correction accuracy can be controlled within ⁇ 1 to 5 mm.
  • the above-mentioned first heating device 22 adopts a heating furnace, such as a non-oxidation roller hearth heating furnace or a fully sealed induction heating furnace with inert atmosphere protection, so as to achieve the purpose of heating the steel and effectively prevent the surface oxidation of the steel.
  • the above-mentioned first heating device 22 includes a heating section and a heat preservation section to facilitate the implementation of the steel heat treatment process.
  • the above-mentioned first cooling device 23 is used to cool the heated strip according to a set cooling rate.
  • One or more of aerosol, water mist and water spray methods can be used, and zone cooling technology can be used.
  • the upper and lower water ratio control technology improves the uniformity of cooling of the strip and prevents the strip from generating large internal stress during the cooling process.
  • the roller cooling method with tension can be used to further prevent the strip from forming defects due to internal stress during the cooling process.
  • the outlet of the above-mentioned first cooling device 23 is equipped with a meter inspection instrument and a plate shape meter, which can conduct online real-time monitoring of the surface quality and plate shape of the cooled strip or steel plate, and feed back the monitoring results to the first cooling device.
  • the cooling device 23 and the first cooling device 23 automatically adjust the cooling parameters in real time according to the feedback information to form a closed-loop control.
  • the above-mentioned first cooling device 23 can realize several cooling modes such as slow-speed quenching and cooling of continuous strip steel, slow-speed quenching and cooling of single steel plates, and rapid quenching and cooling of single steel plates.
  • the above-mentioned second shearing device 24 is mainly used for shearing operations such as cutting continuous strip steel to length.
  • the above-mentioned first stacker 25 can stack the cut-to-length steel plates neatly and then transport them to downstream processes; the first stacker 25 is preferably in the form of a swinging horseshoe roller and is hydraulically driven, which can improve the palletizing rhythm and Accuracy; the entrance of the first stacker 25 can be further equipped with pinch rollers, which can be used to assist in decelerating the steel plate.
  • the above-mentioned steel plate transfer device 3 can refer to the relevant equipment in Chinese patent application CN202111265720.7, and the specific structure will not be described again here.
  • the above-mentioned low-temperature heat treatment unit includes multiple sets of low-temperature heat treatment mechanisms, which can improve the flexibility and reliability of system production.
  • the above-mentioned second heating device 41 adopts a heating furnace, such as a non-oxidation roller hearth heating furnace or a fully sealed induction heating furnace with inert atmosphere protection, to achieve the purpose of heating the steel plate and effectively prevent the surface oxidation of the steel plate.
  • the above-mentioned second heating device 41 includes a heating section and a heat preservation section to facilitate the implementation of the steel plate heat treatment process.
  • the above-mentioned second cooling device 42 is used to cool the heated steel plate, wherein: the high temperature section 400-700°C preferably adopts protective gas circulating jet cooling (RJC) technology, and the steel plate is cooled at 20-60°C/s.
  • the cooling rate is rapid cooling to avoid the occurrence of temper brittleness and prevent the oxidation of the steel plate; in the low temperature section below 400°C, air jet cooling (AJC) technology is used to air-cool the steel plate to room temperature, reduce the internal stress of tempering, and obtain stable tempering. Fire organization.
  • RJC protective gas circulating jet cooling
  • each second heating device 41 is equipped with a feed roller, and the steel plate transfer device 3 is respectively connected to each of the feed rollers;
  • There is a second steel plate loading and unloading station and the second steel plate loading and unloading station is provided with a second steel plate loading and unloading device 43 capable of performing steel plate offline or steel plate online operations on the feed roller.
  • the above-mentioned feeding roller can be a conveying roller, etc.;
  • the above-mentioned second steel plate loading and unloading device 43 can be a steel plate lifting device, such as a vacuum suction cup crane or a high-precision disk crane.
  • the on-line and off-line processing of steel plates can be realized, making the low-temperature heat treatment unit functionally independent, improving production flexibility and reliability, and at the same time improving unit equipment utilization. Furthermore, the connection between the steel plate transfer device 3 and the feed roller can be realized through the above-mentioned steel plate lifting device, thereby improving the equipment utilization rate of the steel plate lifting device.
  • the product collection unit includes a finishing device 61 and a steel plate stacking section, and each of the second cooling devices 42 is connected to the feed inlet of the finishing device 61, so The discharge port of the finishing device 61 is connected to the steel plate stacking section.
  • the above-mentioned finishing device 61 mainly includes steel plate straightening equipment, including a multi-roller straightening machine and/or a brush roller, which can straighten the steel plate while removing residual iron oxide scale on the surface of the steel plate to further improve the shape and surface of the steel plate. Quality; when using a multi-roller straightening machine, the upper roller of the multi-roller straightening machine is preferably pressed by servo hydraulic pressure.
  • the precision of the reduction amount can be controlled within ⁇ 0.1mm.
  • the lower roller has a crown adjustment to achieve the maximum yield strength.
  • Straightening of 1800MPa steel plate ensures that the unevenness of the steel plate is less than 3/1000.
  • the outlet of the finishing device 61 is equipped with a meter inspection instrument and a plate shape meter for online real-time monitoring of the surface quality and plate shape of the straightened steel plate, and the monitoring results are fed back to the finishing device 61, The finishing device 61 automatically adjusts the straightening parameters in real time based on the feedback information to form a closed-loop control.
  • each low-temperature heat treatment mechanism can share a set of finishing devices 61 , and the steel plates output from each second cooling device 42 can be transported to the finishing device 61 .
  • each second cooling device 42 is also connected to the steel plate stacking section through a bypass roller.
  • the two ends of the bypass roller are respectively located at the entrance of the finishing device 61 . Material side and discharging side; based on this design, the production flexibility of the system can be improved. For steel plates that do not need finishing treatment, they can directly enter the steel plate stacking section.
  • a steel plate on-line station is provided on the steel plate conveying roller on the feed side of the finishing device 61 and a steel plate on-line device 5 is configured.
  • the steel plate on-line device 5 can adopt a steel plate lifting device in the form of a vacuum suction cup crane or a high-precision disk crane, which can lift off-line steel plates onto the line, realizing functional independence of the finishing unit, improving production flexibility, and maximizing production efficiency. Give full play to the productivity and efficiency of finishing equipment.
  • the above-mentioned steel plate stacking section can include multiple sets of second stackers 63, and the steel plates output by the finishing device 61 can enter one of the sets of second stackers 63; in the above-mentioned
  • the number of the second stackers 63 can be the same as the number of low-temperature heat treatment mechanisms and arranged in one-to-one correspondence.
  • Each group of the second cooling device 42 can pass through the corresponding bypass.
  • the roller conveyor is connected with the corresponding second stacker 63.
  • the above-mentioned second stacker 63 is preferably in the form of a swinging horseshoe roller and is hydraulically driven, which can improve the palletizing rhythm and accuracy; the entrance of the second stacker 63 can be further equipped with a pinch roller, which can be used to assist in decelerating the steel plate.
  • a third shearing device 62 is also provided on the entrance side of the second stacker 63, which is mainly used for shearing operations such as cutting steel plates to length to meet the user's needs for steel plates of different lengths, and can also be used for Steel plate online sampling.
  • the embodiment of the present invention relates to a heat treatment production method of high-strength steel plate and strip, which is implemented based on the multi-functional high-strength steel plate and strip heat treatment production system provided in the first embodiment above;
  • the method includes a coil-plate continuous heat treatment mode and a plate-plate continuous heat treatment mode;
  • the raw steel coil is uncoiled by the uncoiling device 11, it passes through the first shearing device 13 and is processed by the first heating device 22 and the first cooling device 23. Finally, it is sheared into plates by the second shearing device 24, and the sheared steel plates are processed by the low-temperature heat treatment unit and then enter the product collection unit;
  • the raw steel coil is uncoiled by the uncoiling device 11, it is sheared into plates by the first shearing device 13, and the sheared steel plate is passed through the first heating device 22 and After being processed by the first cooling device 23, the air passes through the second shearing device 24, is processed by the low-temperature heat treatment unit, and then enters the product collection unit.
  • the above method also includes a plate-plate offline heat treatment mode;
  • the plate-plate offline heat treatment mode includes:
  • the raw steel coil is uncoiled by the uncoiling device 11, it is cut into plates by the first shearing device 13, and the sheared steel plates are temporarily stored offline; according to the production schedule, the temporarily stored steel plates are brought online and then processed.
  • the first heating device 22 and the first cooling device 23 it passes through the second shearing device 24, is processed by the low-temperature heat treatment unit, and then enters the product collection unit; wherein, it can be processed by the above-mentioned
  • the first steel plate on-line and off-line device 15 realizes the on-line and off-line processing of steel plates;
  • the steel plates transported from the upstream are first offline and temporarily stored.
  • the temporarily stored steel plates are brought online, and then processed by the second heating device 41 and the second cooling device 42 before entering the production line.
  • the above-mentioned product collection unit; wherein, the on-line and off-line processing of steel plates can be realized through the above-mentioned second steel plate on-line and off-line device 43.
  • the product collection unit includes a finishing device 61 and a steel plate stacking section; the product collection unit has at least one of the following steel plate finishing modes:
  • Steel plate continuous unfinishing mode in which the steel plates transported by the low-temperature heat treatment unit directly enter the steel plate stacking section for collection, for example, the direct delivery of steel plates is achieved through the above-mentioned bypass roller;
  • Steel plate offline finishing mode in which the outer steel plate of the unit is brought online (which can be realized by the above-mentioned steel plate online device 5). After being finished by the finishing device 61, it is collected through the steel plate stacking section.
  • the heat treatment production method of the above-mentioned high-strength steel plate and strip includes at least one of the following quenching and tempering heat treatment process, quenching heat treatment process, tempering heat treatment process and normalizing heat treatment process. Preferably, it can realize quenching and tempering heat treatment and quenching of the steel plate.
  • the corresponding heat treatment mode can be selected according to the design and production process of the steel plate produced.
  • the quenching and tempering heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T1 at the predetermined heating speed V1 in the first heating device 22 and kept for a time t1 to austenitize the steel structure;
  • the steel output from the first heating device 22 is cooled to room temperature in the first cooling device 23 at a predetermined cooling rate V2 to obtain a quenched martensite structure in the steel;
  • the steel plate output from the high-temperature heat treatment unit is heated to a predetermined temperature T2 in the second heating device 41 and kept at the temperature for a time t2 to obtain a tempered martensite structure in the steel;
  • the steel plate output from the second heating device 41 is cooled to room temperature in the second cooling device 23 to obtain the target product.
  • the goal is to completely austenitize the steel structure and obtain a uniform and fine equiaxed austenite structure.
  • V1 is in the range of 5-100°C/s; T1 is in the range of 900-1100°C; and t1 is in the range of 2-10 min.
  • the goal is to make the structure of the steel material a uniform and fine quenched martensite structure.
  • V2 is in the range of 50 to 200°C/s.
  • the internal stress of the steel can be eliminated through tempering heating, so that the structure of the steel is a tempered martensitic structure, the plastic toughness of the steel is improved, and the strength, plasticity and toughness of the steel are reasonably matched.
  • T2 is in the range of 150-700°C, and t2 is in the range of 1-10 minutes.
  • the structure of the target product is a tempered structure stable at room temperature; at the same time, in this step, the generation of temper brittleness during the cooling process should be avoided.
  • the quenching heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T3 at the predetermined heating speed V3 in the first heating device 22, and kept for a time of t3 to austenitize the steel structure;
  • the steel output from the first heating device 22 is cooled to room temperature in the first cooling device 23 at a predetermined cooling speed V4 to obtain a quenched martensite structure in the steel.
  • the goal is to completely austenitize the steel structure and obtain a uniform and fine equiaxed austenite structure.
  • V3 is in the range of 5-100°C/s; T3 is in the range of 900-1100°C; and t3 is in the range of 2-10 minutes.
  • the goal is to make the structure of the steel material a uniform and fine quenched martensite structure.
  • V4 is in the range of 50 to 200°C/s.
  • the normalizing heat treatment process includes the following steps:
  • the steel plate or steel strip transported from the upstream is heated to the predetermined temperature T4 at the predetermined heating speed V5 in the first heating device 22 and kept at the temperature for a time of t4 to austenitize the steel structure;
  • the steel output from the first heating device 22 is cooled to room temperature in the first cooling device 23 at the predetermined cooling speed V6 to obtain a normalized structure in the steel;
  • the goal is to completely austenitize the steel structure and obtain a uniform and fine equiaxed austenite structure.
  • V5 is in the range of 5-100°C/s; T4 is in the range of 900-1100°C; and t4 is in the range of 2-10 min.
  • the goal is to make the structure of the steel material a uniform and fine normalized structure.
  • V6 is in the range of 10 to 50°C/s.
  • the tempering heat treatment process includes the following steps:
  • the steel is heated to a predetermined temperature T5 by the first heating device 22 and held for a time of t5 to obtain a tempered martensite structure in the steel, and then cooled to room temperature in the first cooling device 23 to obtain the target product;
  • the steel is heated to a predetermined temperature T5 through the second heating device 41 and held for a time of t5 to obtain a tempered martensite structure in the steel, and then cooled to room temperature in the second cooling device 42 to obtain the target product.
  • the internal stress of the steel can be eliminated through tempering heating, so that the structure of the steel is a tempered martensitic structure, the plastic toughness of the steel is improved, and the strength, plasticity and toughness of the steel are reasonably matched; the structure of the target product is room temperature.
  • the cooling step the generation of temper brittleness during the cooling process should be avoided.
  • T5 is in the range of 150-700°C, and t5 is in the range of 1-10 minutes.
  • the multifunctional high-strength steel plate and strip heat treatment production system and high-strength steel plate and strip heat treatment production method provided in this embodiment can be applied to the heat treatment production of high-strength steel plate and strip with thickness specifications of 1 to 30mm and width specifications of 500 to 2200mm.
  • the maximum yield strength of the product can reach 1800MPa.
  • the surface flatness of the product is less than 3/1000, and the surface quality and surface cleanliness are less than Sa 2.5.
  • the embodiment of the present invention provides a strip cutting method on a strip continuous production line, which can be used to complete the corresponding shearing operations in the above-mentioned Embodiment 1 or 2, such as the first shearing device, the second shearing device and the third shearing device. At least one of the three shearing devices adopts this strip cutting method.
  • the strip cutting method includes the following steps:
  • the cutting head 1031 moves according to the designed cutting head running path to cut the strip.
  • the thermal cutting method or the water cutting method can be used.
  • the thermal cutting method is preferably the laser cutting method.
  • the cutting head 1031 is a laser cutting head; for the water cutting method, the cutting head 1031 is correspondingly a water cutting head. / waterjet.
  • the cutting head 1031 needs to be able to move.
  • the cutting head 1031 is configured with a cutting head driving mechanism.
  • the cutting head driving mechanism has a third element that drives the cutting head 1031 to move in the length direction of the strip running channel.
  • a driving stroke and a second driving stroke driving the cutting head 1031 to move in the width direction of the strip running channel.
  • a gantry cutting machine is used, which specifically includes:
  • Machine tool host part including the gantry 1033 and the movable seat.
  • the gantry 1033 can slide along the length of the strip running channel to realize the movement of the cutting head 1031 in the X direction.
  • the movable seat can move laterally on the gantry 1033 to realize the cutting head 1031 In the Y-direction movement, the movable seat can further be set to move up and down relative to the gantry 1033 to realize the movement of the cutting head 1031 in the Z-direction, which can assist focusing and improve the focusing efficiency and focusing accuracy of the cutting head 1031.
  • the drive of the gantry 1033 and the movable seat are preferably driven by servo motors, which can be driven correctly and accurately according to the control program;
  • the laser 1032 is installed on the above-mentioned movable seat, and the laser emitted by the laser 1032 is emitted from the cutting head 1031 to the strip. Surface to realize strip cutting operation;
  • CNC system controls the machine tool host to realize the X-, Y-, and Z-direction movements of the cutting head 1031, and also controls the output power of the laser 1032.
  • the above-mentioned cutting machine also includes an exhaust and dust removal mechanism to extract smoke and dust generated during processing and perform dust removal treatment so that the exhaust gas emissions meet environmental protection requirements.
  • the waste collection unit can be equipped with a slag discharge equipment to facilitate the timely discharge of the collected waste.
  • the running path of the cutting head is an oblique running path with an angle relative to the length direction of the strip.
  • the factors considered in the design of the above-mentioned cutting head running path mainly include strip steel specifications, strip running speed and cutting time.
  • the starting running position of the cutting head 1031 can be determined by the strip steel specifications, and the strip running speed mainly determines the cutting speed.
  • the X-direction moving speed of the head 1031, the cutting time requirement combined with the strip steel specification can determine the Y-direction moving speed of the cutting head 1031.
  • the cutting head running paths will be different, but all cutting head running paths will be within the two boundary running paths of the cutting head 1031 (as shown in Figure 5).
  • this embodiment can realize the online continuous cutting operation of strip steel on the strip steel continuous production line without stopping or flying shearing, ensuring the reliability and smoothness of strip steel production, and is especially suitable for the online continuous cutting operation of high-strength steel plates.
  • the strip running channel is divided into a cutting area 10101 and a non-cutting area 10102.
  • the strip in the cutting area 10101 is Steel conveyor 101 is designed for protection. Based on this design, the strip conveying device 101 can be better protected, and the matching design of the strip conveying device 101 in the cutting area 10101 and the non-cutting area 10102 can effectively reduce equipment costs and maintenance costs.
  • the conveying surface of the strip conveying device 101 that is suitable for contact with the strip is made of a material that is resistant to laser irradiation, for example, the conveying surface is plated with copper or otherwise formed to be resistant to laser irradiation. material layer.
  • the above structure can better protect the strip conveying device 101, prevent the laser from passing through the strip and ablating the strip conveying device 101, and prevent surface defects of the strip conveying device 101 from affecting the surface quality of the strip.
  • the strip conveying device 101 in the cutting area 10101, includes a plurality of conveying units arranged sequentially along the length direction of the strip running channel, and each conveying unit includes a drive roller installed on At least one first conveying roller 1012 on the transmission roller 1011; when multiple first conveying rollers 1012 are installed on the transmission roller 1011, each first transmission roller 1012 is arranged at intervals on the transmission roller 1011.
  • Arranging the first conveying rollers 1012 at intervals can reduce the number of strip conveying equipment that may appear within the influence range of the cutting medium (such as the laser irradiation range), thereby correspondingly reducing the number of strip conveying devices 101 during the strip cutting process. damage.
  • the first conveying roller 1012 is used as the conveying equipment.
  • the replacement of the first conveying roller 1012 is also very convenient.
  • the new first conveying roller 1012 will be standardized and produced. Just replace the defective first conveying roller 1012, which avoids the need to replace the entire conveying roller in traditional roller conveying equipment, which can reduce maintenance costs; accordingly, the first conveying roller 1012 is removably and fixedly installed on the transmission roller. On axis 1011.
  • the transmission surface is made of materials resistant to laser irradiation
  • the outer edge surface of the first conveying roller 1012 only needs to be made of materials resistant to laser irradiation, which can also significantly reduce the cost.
  • the cross-section of the rim ring used to contact the strip is spindle-shaped, that is, the rim ring extends from the inner ring to the steel strip.
  • the direction of the outer ring has a tapered structure. Based on this structure, the contact range between the first conveying roller 1012 and the strip can be further reduced, that is, the area of the above-mentioned conveying surface can be reduced, thereby reducing the impact of the cutting medium on the strip conveying equipment. of damage.
  • the above-mentioned first conveying roller 1012 may further include a core ring, which is sleeved on the transmission roller shaft 1011, and the above-mentioned rim ring is sleeved on the core ring; wherein, the rim ring and the core ring are preferably detachably connected. , for example, the two are connected through an adapter plate.
  • the adapter plate and the rim ring can be connected through bolts, etc.
  • the adapter plate can be welded and fixed on the core ring, or can be fixed on the core ring through bolts.
  • a protective tube 1015 is set on the exposed transmission roller 1011 (that is, the roller shaft section that is not covered with the first conveying roller 1012) to prevent the medium from being cut during the cutting process.
  • the transmission roller 1011 is damaged, further reducing maintenance costs.
  • a plurality of second conveying rollers 1013 are installed on the shaft section of the transmission roller shaft 1011 extending to the non-cutting area 10102.
  • the outer peripheral surface of the second conveying roller 1013 is preferably a cylindrical ring surface, which has a relatively large contact area with the strip steel, ensuring reliable conveyance of the strip steel, and at the same time improving the force uniformity of each shaft section of the transmission roller shaft 1011 , to avoid defects such as torsional deformation of the transmission roller 1011.
  • the conveying rollers on the transmission roller 1011 are arranged at equal intervals to prevent the strip from deflecting.
  • the axis of the above-mentioned driving roller 1011 is parallel to the width direction of the strip running channel, and the first conveying roller 1012 and the second conveying roller 1013 are preferably coaxially installed on the driving roller 1011.
  • the above-mentioned transmission roller 1011 is connected with a conveying driving mechanism 1014 that drives it to rotate around its own axis.
  • the conveying driving mechanism 1014 can be a gear motor or a motor, preferably a servo motor or a servo motor.
  • the strip conveying device 101 before and after the cutting station also adopts a structure in which the transmission rollers 1011 are set with multiple conveying rollers.
  • the transmission rollers 1011 are preferably arranged in sequence with equal intervals.
  • each set of conveying driving mechanisms 1014 is arranged on both sides of the strip conveying channel. It is further preferred that there is a transmission roller shaft 1011 between the two adjacent groups of conveying driving mechanisms 1014 on the same side; based on this design , which can effectively prevent strip deviation.
  • the strip pressing mechanism 102 when cutting the strip, pressure is applied to the strip on both sides of the cutting slit to prevent the cut strip from rebounding upward, thereby better protecting the cutting equipment.
  • the strip pressing mechanism 102 can be configured accordingly. In order to cooperate with the operation of the strip and the operation of the cutting head 1031, the pressing part of the strip pressing mechanism 102 should be able to keep following the strip.
  • the above-mentioned strip pressing mechanism 102 is configured with an X-direction drive structure, such as a pressing frame 1021 with a traveling mechanism and equipped with a traveling drive structure (such as a motor).
  • the pressing frame 1021 can be combined with a gantry type
  • the gantry 1033 of the cutting machine shares the X guide rail, or it can be equipped with an X guide rail separately; accordingly, the strip pressing mechanism 102 needs to be provided on the front and rear sides of the cutting machine.
  • the strip pressing mechanism 102 is integrated with the cutting machine.
  • the above-mentioned pressing frame 1021 is installed on the gantry frame 1033 of the gantry cutting machine. Since it is necessary to press the strip steel on both sides of the cutting slit separately. Tight, therefore mounting brackets can be provided on the front and rear sides of the gantry 1033 to install the compression frame 1021.
  • the above-mentioned strip pressing mechanism 102 includes a pressure beam 1022 and a pressure driving structure 1023 for driving the pressure beam 1022 to rise and fall.
  • the pressure driving structure 1023 can drive the pressure beam 1022 in the working position. and the standby position. In the working position, the pressure beam 1022 is pressed against the surface of the strip, and the standby position is located above the working position.
  • the pressure beam 1022 can be a pressure plate whose surface is parallel to the horizontal plane. Of course, pressure rollers and the like are also suitable for use in this embodiment.
  • the above-mentioned pressing drive structure 1023 may adopt linear drive equipment such as cylinders and hydraulic cylinders, or may adopt driving methods such as motor + transmission components.
  • the above-mentioned pressing down driving structure 1023 is installed on the pressing frame 1021 and connected with the pressing beam 1022.
  • a guide structure is provided on the compression frame 1021 to guide the lifting movement of the pressure beam 1022 and improve the stability and reliability of the lifting movement of the pressure beam 1022; the guide structure can use a guide rod 10241 -
  • the guiding method of the guide sleeve 10242 can also be the guiding method of the guide slide rail-guide slide block, and I will not give an example here.
  • multiple guide rods 10241 are installed on the pressure beam 1022, and multiple guide holes are correspondingly provided on the compression frame 1021; further, guide sleeves 10242 can be installed in the guide holes.
  • at least Some guide sleeves 10242 use self-lubricating sleeves.
  • an upper limit block can be set on the guide rod 10241 to limit the downward stroke of the guide rod 10241, thereby limiting the downward stroke of the pressure beam 1022 and preventing the pressure beam 1022 from being separated from the compression frame 1021; an upper limit block can also be provided on the guide rod 10241 A lower limit block is provided on the top to limit the upward stroke of the guide rod 10241 and the pressure beam 1022.
  • the above-mentioned strip pressing mechanism 102 also includes a buffer structure.
  • the buffer structure is arranged between the pressing beam 1022 and the pressing frame 1021. On the one hand, it can improve the pressure adaptability when applying pressure to the strip. On the other hand, it can effectively buffer the rebound force of the strip steel and reduce the impact on the pressing drive structure 1023 and so on.
  • the buffer structure includes multiple sets of buffer springs 1025. The top end of the buffer springs 1025 is in contact with the compression frame 1021, and the bottom end is in contact with the pressure beam 1022; a guide rod 10241 is provided above.
  • the buffer spring 1025 can be sleeved on the guide rod 10241, and the buffer spring 1025 can be restricted to only perform vertical expansion and contraction activities. Further, a plurality of sinking grooves are provided at the bottom of the compression frame 1021. The number of sinking grooves and the buffer springs 1025 are the same and arranged in one-to-one correspondence. The top ends of the buffer springs 1025 are accommodated in the corresponding sinking grooves, which can improve the strength of the buffer spring 1025.
  • the large-diameter hole section of the stepped hole is It is constituted as the sinking tank mentioned above.
  • a guide plate 1026 is also provided on the compression frame 1021.
  • the guide plate 1026 is installed at the front end (that is, the steel side end) of the compression frame 1021.
  • the guide plate 1026 The bottom end of is preferably no higher than the horizontal plane where the pressure beam standby position is located.
  • the bottom surface of the guide plate 1026 is preferably an inclined guide surface, which is inclined downward from the front end to the rear end of the guide plate 1026 (that is, the front end of the guide surface is located above the rear end).
  • the guide plate 1026 can prevent the belt head from being tilted too much and damaging the pressure plate, and can assist in belt threading and improve production efficiency.
  • the guide plate 1026 is provided only for the pressing frame 1021 on the front side of the cutting machine.
  • the above-mentioned pressure beam 1022 is a beam made of electromagnets, or an electromagnet is provided on the pressure beam 1022.
  • the control power supply of the electromagnet can be installed on the compression frame 1021, or can be controlled by the pressure beam 1021.
  • the tight frame 1021 is wired to connect to an external power source. Based on the above structure, when the pressure beam 1022 is pressed, the electromagnet is energized, which can cause the pressure beam 1022 to be adsorbed and pressed against the surface of the strip, significantly improving the compression effect of the strip and the operation synchronization.
  • an embodiment of the present invention also provides a strip cutting device, which can be used in the above-described first or second embodiment, for example, as the first shearing device/second shearing device/third shearing device in the first embodiment. cutting device.
  • the strip cutting device includes:
  • a cutting head 1031 is arranged above the strip running channel.
  • the cutting head 1031 is configured with a cutting head driving mechanism.
  • the cutting head driving mechanism has a first drive that drives the cutting head 1031 to move in the length direction of the strip running channel. stroke and a second driving stroke that drives the cutting head 1031 to move in the width direction of the strip running channel;
  • the controller is used to receive cutting instructions and control the cutting head driving mechanism to work when the strip moves to the set position so that the cutting head 1031 moves according to the preset cutting head running path and cuts the strip.
  • the cutting head running path is such that the cutting head 1031 keeps following the strip in the length direction of the strip and makes a traversing cutting motion relative to the strip in the width direction of the strip.
  • the above-mentioned controller can be integrated into the central control room of the production line.
  • the above-mentioned cutting head 1031 is preferably a laser cutting head.
  • An embodiment of the present invention provides a steel coil uncoiling unit, which can be used as the uncoiling device in the first embodiment.
  • the steel coil uncoiling unit includes a reel, a strip pinching device 203, a tape threading guide 201 used to guide the strip head from the reel to the strip pinching device 203, and a strip guide plate 201 installed on the workshop foundation.
  • the support frame is provided with a deep bending roller 2051 and a deep bending driving device for driving the deep bending roller 2051 to deep bend the strip.
  • the deep bending driving device includes a translation seat, a The translation drive mechanism 2052 that drives the translation base to move horizontally on the support frame and the deep bending swing drive mechanism 2053 that drives the deep bending roller 2051 to swing up and down, the deep bending roller frame 20511 is hinged on the translation base, so The deep bending swing driving mechanism 2053 is installed on the translation seat and connected to the deep bending roller frame 20511.
  • the driving stroke of the translation driving mechanism 2052 and the driving stroke of the deep bending swing driving mechanism 2053 satisfy: deep bending
  • the roller body 20512 has a standby position, a deep bending position, and a belt threading position that is pressed against the strip surface on the belt threading guide 201 .
  • the above-mentioned strip pinching device 203 can use pinch rollers, which are conventional equipment in this field, and the specific structure will not be described again here.
  • the deep bending roller 2051 can translate and swing up and down, it can adapt to steel coils of different steel types and different coil diameters. Obviously, it can also adjust its position according to the gradual change of the coil diameter, improve the quality of the strip steel, and ensure smooth production.
  • the above-mentioned translation driving mechanism 2052 can use linear driving equipment such as cylinders and hydraulic cylinders, or adopt a driving method of motor + transmission mechanism; the above-mentioned deep bending swing driving mechanism 2053 can also use linear driving equipment such as hydraulic cylinders.
  • the deep bending The cylinder of the swing driving mechanism 2053 is hinged on the support frame, and the output shaft of the deep bending swing driving mechanism 2053 is hinged on the deep bending roller frame 20511.
  • the deep bending roller 2051 can meet the conventional deep bending function, that is, the deep bending roller 2051 can remove the iron oxide scale on the surface of the strip during normal coil feeding and deeply bend the strip to at least partially eliminate the residual strip. Stress etc.
  • the deep bending roller body 20512 also has a belt threading position that is pressed against the strip surface on the belt threading guide 201, the deep bending roller 2051 can also improve the strip shape during belt threading, thereby improving the threading efficiency. With efficiency, the production can be ensured smoothly; this embodiment makes full use of and explores the role of the deep bending roller 2051, so that it has the leading processing function, which can reduce the number of on-site equipment and investment costs, and is beneficial to the smoothness and safety of production.
  • the deep bending roller body 20512 is driven to run to its belt threading position, and the deep bending roller body 20512 is exerted downward pressure to achieve the effect of stripping the belt head. Defect handling.
  • the translation stroke of the translation seat extends to just above the guide channel of the tape threading guide plate 201.
  • the specific end of the translation stroke of the translation seat can be determined according to the guiding method of the tape threading guide plate 201 and the specific structure of the tape threading guide plate 201.
  • the translation stroke of the translation seat can have a certain margin, so that the deep bending roller body 20512 can be pressed down at multiple positions to process the strip head.
  • the above-mentioned deep bending roller 2051 includes a deep bending roller frame 20511, a deep bending roller seat 20513, and a deep bending roller body 20512 installed on the deep bending roller seat 20513.
  • a centering guide rail and a centering drive unit 20514 are provided on the deep bending roller frame 20511, and a deep bending roller base 20513 is slidably disposed on the centering guide rail and is in contact with the centering unit.
  • Drive unit 20514 is connected.
  • the guiding direction of the centering guide rail is parallel to the axial direction of the deep bending roller body 20512, and the deep bending roller body 20512 can be driven to perform axial translational movement through the centering drive unit 20514; the above-mentioned centering drive unit 20514 can use hydraulic pressure Linear drive equipment such as cylinders and cylinders. Based on the above structure, the position of the deep bending roller body 20512 can be adjusted, and the strip deviation can be corrected.
  • the uncoiler unit is equipped with a CPC (Center Position Control) centering device.
  • the CPC centering device is an existing device in this field, and the specific structure will not be described here.
  • the above-mentioned centering drive unit 20514 is preferably interlocked with the CPC centering device to ensure the correction effect of the strip.
  • the above-mentioned tape threading guide plate 201 is preferably a movable guide plate, which has high flexibility and requires small layout space. It can support the tape head and guide the tape head to the strip pinching device 203.
  • the belt threading guide 201 includes a swing frame 2012, a lifting base and a guide plate body 2011.
  • the middle part of the guide body 2011 is hinged to and connected to the lifting base through a first hinge axis.
  • the lifting seat is movably provided on the swing frame 2012, and is provided on the swing frame 2012 for driving the lifting seat.
  • a guide plate lifting drive mechanism 2015 for lifting movement; the swing frame 2012 is equipped with a guide plate swing drive mechanism 2013 for driving it to swing around a second hinge axis, and the axes of the first hinge axis and the second hinge axis are both parallel. on the axis of the drum.
  • an unwinding knife 20113 is provided at one end of the guide plate body 2011 close to the reel, so that it can be used for unwinding. Integrating the unwinding knife 20113 on the tape threading guide 201 can significantly reduce the number of on-site equipment and facilitate equipment. Arrangement and management.
  • the above-mentioned guide plate body 2011 includes a first guide plate section 20111 and a second guide plate section 20112 arranged on both sides of the first hinge axis, and the first guide plate section 20111 is located on the side of the first hinge axis close to the drum;
  • the uncoiler blade 20113 is provided, the uncoiler blade 20113 is provided at the corresponding side end of the first guide plate section 20111.
  • the guide surface of the belt threading guide plate 201 is a boomerang-shaped guide surface, that is, the guide surface of the first guide plate section and the guide surface of the second guide plate section are spliced to form a boomerang-shaped guide surface, which can be smoothly carried out. Threading guide work.
  • the positions of the first guide plate section and the second guide plate section can be controlled, so that the first guide plate section and the second guide plate section switchably support the lead and cooperate with the swing of the swing frame 2012. And the lifting and lowering of the lifting seat can reliably complete the leading guidance operation between the steel coil and the strip steel pinching device 203.
  • the guide plate rotation driving mechanism 2014 is connected to the second guide plate section to facilitate the arrangement of the guide plate rotation driving mechanism 2014 and the driving of the guide plate body 2011.
  • the above-mentioned guide plate rotation driving mechanism 2014 may adopt linear driving equipment such as a hydraulic cylinder.
  • the above-mentioned guide plate rotation drive mechanism 2014 is arranged on the workshop foundation.
  • the guide plate rotation drive mechanism 2014 includes a first linear drive unit hinged to the workshop foundation, and the second linear drive unit is hinged to the workshop foundation.
  • the output shaft of a linear drive unit is hingedly connected to the guide plate body 2011; accordingly, the first linear drive unit can use a hydraulic cylinder, a pneumatic cylinder, etc.
  • the guide plate rotation driving mechanism 2014 is arranged on the workshop foundation instead of being installed on the swing frame 2012. On the one hand, it facilitates the layout of the equipment, can reduce the weight of the swing frame 2012, and saves the energy consumption of the first swing drive mechanism. On the other hand, The two actions of rotation of the guide plate body 2011 and swinging with the swing frame 2012 are made independent of each other and cooperate with each other, thereby improving the control flexibility and accuracy of the guide plate body 2011.
  • the above-mentioned guide plate lifting drive mechanism 2015 can also adopt linear drive equipment such as hydraulic cylinders.
  • a lifting guide rail is provided on the swing frame 2012 to guide and constrain the lifting movement of the lifting seat, which can improve the stability of the lifting of the guide plate body 2011.
  • the above-mentioned guide plate swing driving mechanism 2013 can also adopt linear driving equipment such as hydraulic cylinders.
  • the guide plate swing driving mechanism 2013 is arranged on a workshop foundation.
  • the guide plate swing driving mechanism 2013 includes a second linear drive unit hinged to the workshop foundation.
  • the second linear drive unit has The output shaft is hingedly connected to the swing frame 2012.
  • the bottom end of the swing frame 2012 is hinged on the workshop foundation, and the output end of the above-mentioned guide plate swing driving mechanism 2013 is hinged on the middle part of the swing frame 2012.
  • the above-mentioned swing frame 2012 can adopt a steel truss structure, which can significantly reduce its own weight while ensuring the structural strength.
  • the above-mentioned second guide plate section 20112 is provided with an electromagnet 20114, or a plurality of adsorption holes are opened on the guide surface of the second guide plate section 20112 and are provided on the second guide plate section 20112.
  • a vacuum adsorption chamber is formed in 20112.
  • an air extraction pipeline can be arranged on the swing frame 2012 and connected to external vacuum equipment through a drag chain or the like.
  • the electromagnet 20114 is provided on the second guide plate section 20112.
  • the equipment layout and wiring are more convenient, and the working reliability is high.
  • the electromagnet 20114 can be powered on or off by controlling the response. high speed.
  • an electromagnet 20114 or an adsorption hole is provided on the second guide plate section 20112 so that the guide plate body 2011 can absorb the strip.
  • the guide plate body 2011 rotates or lifts, it can ensure that the lead can fit on the guide plate.
  • the reliability of the strapping operation and the efficiency of strapping are improved. Setting up the electromagnet 20114 or using the vacuum adsorption method not only facilitates the layout of the equipment, reduces the space occupied by the equipment and the weight of the swing frame 2012, but also has high adsorption reliability for the strip, easy and flexible operation, and will not interfere with the steel wire.
  • the uncoiling unit also includes a pressure roller device 204, which is used to press the strip during uncoiling to assist in completing the uncoiling operation.
  • a pressure roller device 204 which is used to press the strip during uncoiling to assist in completing the uncoiling operation. All existing pressure roller devices 204 are suitable for use in this embodiment. , will not be described in detail here.
  • the embodiment of the present invention provides a steel coil uncoiling method, which is implemented based on the above steel coil uncoiling unit;
  • the methods include:
  • the translation drive mechanism 2052 and the deep bending swing driving mechanism 2053 cooperate to drive the deep bending roller body 20512 to press the leading surface on the belt threading guide plate 201 to improve the leading plate. shape purpose.
  • the shape of the leading plate can be judged manually, or a plate shape recognition device can be installed on the support frame for automatic judgment.
  • the tape threading guide plate 201 adopts a swing structure, wherein after the tape threading guide plate 201 receives the tape head at the reel, it swings toward the strip pinching device 203 to implement the tape threading operation.
  • the belt threading guide plate 201 can adopt the structure "including the swing frame 2012, the lifting seat and the guide plate body 2011" in the first embodiment, which will not be described again here.
  • the strip guide plate 201 is provided with an electromagnet 20114 or a vacuum adsorption channel for adsorbing strip steel. This structure is also described in the first embodiment above and will not be described again here;
  • the tape head is adsorbed by the electromagnet 20114 or the vacuum adsorption channel to prevent the tape head from slipping off the tape threading guide plate 201;
  • the tape guide plate 201 can absorb the strip, it can avoid the strip moving due to poor plate shape when the deep bending roller body 20512 is pressed down, and the strip processing effect can be further improved.
  • the translation driving mechanism 2052 and the deep bending swing driving mechanism 2053 cooperate to make the deep bending roller body 20512 move along the surface of the tape threading guide 201. Compared with the situation of pressing down at a single point, it can effectively It can greatly improve the lead processing effect and obtain a good lead plate shape.

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  • Crystallography & Structural Chemistry (AREA)
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Abstract

La présente invention concerne un système multifonctionnel de production de traitement thermique de feuille ou bande d'acier à haute résistance, comprenant une unité de préparation, une unité de traitement thermique à haute température, une unité de traitement thermique à basse température et une unité de collecte de produit reliées en séquence. L'unité de préparation comprend un appareil de déroulement et un premier appareil de cisaillement ; l'unité de traitement thermique à haute température comprend un premier appareil de chauffage, un premier appareil de refroidissement, un second appareil de cisaillement et une première machine d'empilement reliés en séquence ; et l'unité de traitement thermique à basse température comprend au moins un groupe de mécanismes de traitement thermique à basse température, et chaque mécanisme de traitement thermique à basse température comprend un second appareil de chauffage et un second appareil de refroidissement reliés en séquence. De plus, l'invention concerne en outre un procédé de production de traitement thermique de feuille ou bande d'acier à haute résistance mis en œuvre sur la base du système de production. La présente invention peut réaliser les modes de production de traitement thermique continu de bobine à feuille, de traitement thermique continu de feuille à feuille et similaire, est appropriée pour la production de traitement thermique de trempe et de revenu, de traitement thermique de trempe, de traitement thermique de revenu et de traitement thermique de normalisation de matériaux en acier, présente les caractéristiques de multiples canaux, de multiples modes et de multiples fonctions, et peut satisfaire la production de produits à variétés et spécifications multiples.
PCT/CN2022/122405 2022-08-19 2022-09-29 Système et procédé multifonctionnels de production de traitement thermique de feuille ou bande d'acier à haute résistance WO2024036711A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210998543.1 2022-08-19
CN202210998543.1A CN115323155A (zh) 2022-08-19 2022-08-19 多功能高强钢板带热处理生产系统及方法

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Publication Number Publication Date
WO2024036711A1 true WO2024036711A1 (fr) 2024-02-22

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PCT/CN2022/122405 WO2024036711A1 (fr) 2022-08-19 2022-09-29 Système et procédé multifonctionnels de production de traitement thermique de feuille ou bande d'acier à haute résistance
PCT/CN2023/086417 WO2024036987A1 (fr) 2022-08-19 2023-04-06 Système de production de traitement thermique multifonctionnel pour plaque/bande d'acier à haute résistance et procédé

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