WO2024087517A1 - Non-oriented silicon steel full-continuous production system and method - Google Patents

Non-oriented silicon steel full-continuous production system and method Download PDF

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Publication number
WO2024087517A1
WO2024087517A1 PCT/CN2023/086470 CN2023086470W WO2024087517A1 WO 2024087517 A1 WO2024087517 A1 WO 2024087517A1 CN 2023086470 W CN2023086470 W CN 2023086470W WO 2024087517 A1 WO2024087517 A1 WO 2024087517A1
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Prior art keywords
section
continuous rolling
strip
spare
continuous
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PCT/CN2023/086470
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French (fr)
Chinese (zh)
Inventor
易正鑫
何涛
张毅
许彦波
蔡丹
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中冶南方工程技术有限公司
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Publication of WO2024087517A1 publication Critical patent/WO2024087517A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously

Definitions

  • the invention relates to a fully continuous production system and a fully continuous production method of non-oriented silicon steel.
  • Silicon steel is a basic functional material for national economic construction. It is an indispensable soft magnetic alloy in the fields of electricity, electrical appliances and military industry. It is widely used in the manufacture of motors, generators, transformers, rectifier cores and various power electronic components, playing a key role in the generation, transmission and use of electric energy. Its production process is long and the process is complex.
  • the general production process of non-oriented silicon steel is: hot metal desulfurization ⁇ smelting ⁇ vacuum treatment ⁇ continuous casting + electromagnetic stirring ⁇ hot rolling ⁇ (normalization) + pickling ⁇ cold rolling ⁇ finished product annealing + coating.
  • At least 4 units are configured for medium and high grade products, and at least 3 units are configured for medium and low grade products.
  • a 3-4-day intermediate warehouse is configured between each unit for buffering between units; between the front and rear units, the steel coil needs to be hoisted at least twice. It can be seen that the current production process of non-oriented silicon steel has problems such as long process, large floor space, and high production cost.
  • the present invention relates to a fully continuous production system and method for non-oriented silicon steel, which can at least solve some defects of the prior art.
  • the present invention relates to a fully continuous production system for non-oriented silicon steel, comprising a normalizing pickling section, a continuous rolling section and an annealing coating section.
  • the normalizing pickling section, the continuous rolling section and the annealing coating section are sequentially connected and arranged along the running direction of the strip steel to form a continuous production unit, and a production line disconnection mechanism is provided between the normalizing pickling section and the continuous rolling section, as well as between the continuous rolling section and the annealing coating section.
  • the production line disconnection mechanism includes a spare slitting shear, a spare coiling device, a spare uncoiling device and a spare welding machine.
  • the spare coiling device is connected with the strip steel outlet of the adjacent previous process section, and the spare uncoiling device, the spare welding machine and the strip steel inlet of the adjacent next process section are connected in sequence.
  • the spare slitting shear is arranged at the outlet of the adjacent previous process section and/or the entrance of the adjacent next process section.
  • the normalizing pickling section is provided with a normalizing pickling inlet looper and a normalizing pickling outlet looper; and/or, the annealing coating section is provided with an annealing coating inlet looper and an annealing coating outlet looper.
  • the continuous rolling section is provided with a continuous rolling entrance looper.
  • the present invention also relates to a fully continuous production method for non-oriented silicon steel, which is implemented based on the above-mentioned fully continuous production system for non-oriented silicon steel;
  • the method comprises:
  • the upstream coils are processed in sequence through the normalizing pickling section, continuous rolling section and annealing coating section to obtain the target product;
  • At least one set of production line disconnection mechanisms is put into use to decompose the continuous production unit into two or three independent sub-units, and at least some of the independent sub-units continue production.
  • the method comprises:
  • the spare slitting shear on the entrance side of the continuous rolling section cuts the strip, and the front strip runs at the tail-swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section, and the standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine.
  • the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to carry out continuous production.
  • the method comprises:
  • the spare slitting shear at the outlet side of the normal pickling section cuts the strip steel, the tail of the front strip steel continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip steel moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
  • the standby slitting shear on the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welding machine on the entrance side of the annealing coating section.
  • the standby uncoiler on the entrance side of the annealing coating section uncoils the standby steel coil and passes the strip head to the annealing coating standby welding machine. After the annealing coating standby welding machine welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production.
  • the method comprises
  • the spare slitting shear on the outlet side of the continuous rolling section cuts the strip, the tail of the front strip continues to run forward a distance D2 to leave the continuous rolling section, and the head of the rear strip runs forward at the threading speed to the spare coiler on the outlet side of the continuous rolling section for coiling, and the normalizing pickling section and the continuous rolling section continue to carry out continuous production.
  • the method comprises:
  • the spare slitting shear at the entrance of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail-swinging speed to the annealing coating spare welding machine at the entrance of the annealing coating section, and the spare uncoiling machine at the entrance of the annealing coating section uncoils the spare steel coil and
  • the strip head is passed to the annealing coating standby welding machine. After the annealing coating standby welding machine welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production;
  • the spare slitting shear at the outlet side of the normal pickling section cuts the strip, the tail of the front strip continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
  • the spare slitting shears on the entrance and exit sides of the continuous rolling section cut the strip steel respectively, wherein, on the entrance side of the continuous rolling section, the front strip steel runs at the tail swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section, the standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine, and the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head; meanwhile, on the exit side of the continuous rolling section, the strip tail of the front strip steel continues to run forward a distance D2 to leave the continuous rolling section, the strip head of the rear strip steel runs forward at the strip passing speed to the standby coiler on the exit side of the continuous rolling section for coiling, and the continuous rolling section starts independent continuous production.
  • the method comprises:
  • the spare uncoiler at the entrance side of the continuous rolling section and/or the spare uncoiler at the entrance side of the annealing and coating section is loaded with spare steel coils, which have been uncoiled and threaded to the waiting position so that they can be put into use immediately in an accident state.
  • the present invention arranges the normalizing pickling section, continuous rolling section and annealing coating section into a continuous production unit, so that the hot-rolled coil can complete the production of the entire cold rolling process on a continuous production line, greatly reducing labor costs, saving factory space, reducing investment costs and operating costs, shortening product production cycles, and improving product quality.
  • the continuous production unit can be decomposed into two or three independent sub-units through the production line disconnection mechanism, which can not only improve the process flexibility of the production system, but also ensure that the continuous production unit can be disconnected in some process sections. When in an accident state or maintenance condition, the remaining process sections can continue to produce normally, thereby improving the operational reliability of the production system.
  • FIG1 is a schematic structural diagram of a fully continuous production system for non-oriented silicon steel provided in an embodiment of the present invention.
  • an embodiment of the present invention provides a fully continuous production system for non-oriented silicon steel, including a normalizing pickling section, a continuous rolling section and an annealing coating section.
  • the normalizing pickling section, the continuous rolling section and the annealing coating section are arranged in sequence along the running direction of the strip to form a continuous production unit.
  • the normalizing and pickling section is mainly used for normalizing and pickling of hot-rolled silicon steel raw materials, so as to recrystallize the hot-rolled plate structure and coarsen the precipitates, and at the same time, remove the iron oxide scale on the surface of the hot-rolled plate.
  • the normalizing and pickling section has the ability to process 1.6mm to 3.5mm hot-rolled silicon steel raw materials.
  • the normalized pickling section includes a unit unwinding device, a normalized pickling inlet shear 3, a normalized pickling welder 4, a normalized furnace 7 and a pickling device 9; wherein the unit unwinding device adopts a double unwinding device, including a first raw material unwinding machine 1 and a second raw material unwinding machine 2; the normalized pickling inlet shear 3 can shear off the unqualified parts of the strip head and the strip tail; the treated strip head and the strip tail are placed in the normalized pickling welder 4
  • the welding is completed at the normalizing pickling welder 4, and the normalizing pickling welder 4 can be a laser welder or a argon arc welder.
  • the normalizing furnace 7 adopts a treatment process of preheating ⁇ heating ⁇ soaking ⁇ cooling, and the strip steel coming out of the normalizing furnace 7 is cooled to below 80°C.
  • a strip steel surface treatment device is arranged between the normalizing furnace 7 and the pickling device 9, such as a shot blasting machine 8, and the normalized strip steel enters the shot blasting machine 8 for shot blasting treatment.
  • the fine shot particles hit the strip steel surface at high speed, which can remove more than 80% of the iron oxide scale, and the remaining iron oxide scale becomes loose due to shot blasting, so as to facilitate subsequent pickling.
  • the pickling device 9 adopts the HCl pickling mode, and 3 to 5 pickling tanks are provided, and the acid concentration of the pickling tanks decreases in sequence along the running direction of the strip. According to the length of the pickling section, preferably, a correction facility is provided inside the pickling tank to correct the deviation of the strip inside the pickling tank.
  • a raw material trimming shear 5 is provided between the normalizing pickling welding machine 4 and the normalizing furnace 7, which can trim the welded strip and remove the portion with poor edge quality to improve the subsequent rolling effect.
  • the raw material trimming shear 5 can be a disc shear or the like.
  • the normalized pickling section is equipped with a normalized pickling inlet looper 6 and a normalized pickling outlet looper 10.
  • the normalized pickling inlet looper 6 is in a full loop state, which can adjust the production rhythm of the previous and subsequent processes to ensure continuous operation of the unit; the normalized pickling outlet looper 10 is in an empty loop state.
  • the continuous rolling section is mainly used to continuously thin the hot-rolled steel strip to a specified thickness, for example, a hot-rolled steel strip with a thickness of 1.6 mm to 3.5 mm can be continuously thinned to 0.15 mm to 0.65 mm.
  • the continuous rolling section includes a continuous rolling mill 18, which can be in the form of three or more frames according to different specifications of raw materials and finished products, and each frame can be in the form of a 6-roll mill or an 18-roll mill, or different combinations of the two.
  • the continuous rolling section is equipped with a continuous rolling entrance looper 17, which can adjust the production rhythm of the previous and next processes to ensure the continuous operation of the unit.
  • the continuous rolling entrance looper 17 is in a full set state.
  • the annealing coating section is mainly used for recrystallization annealing and insulating coating of the strip steel after cold rolling.
  • the annealing coating section is capable of processing 0.15mm to 0.65mm cold-rolled silicon steel thin strips.
  • the annealing coating section includes an annealing furnace 27, a coating machine 28, a coating drying furnace 29 and a finished product coiling device; wherein, the annealing furnace 27 is used to anneal the strip steel.
  • the annealing furnace 27 can be in the form of a single-layer horizontal annealing furnace 27, a multi-layer reciprocating horizontal annealing furnace, or a vertical + multi-layer reciprocating horizontal + vertical annealing furnace 27; the heating section of the annealing furnace 27 can be in the form of full gas heating, longitudinal magnetic induction heating + transverse magnetic induction heating, or gas heating + induction heating and other forms.
  • the annealed strip enters the coating machine 28 to be coated with an insulating coating; after the insulating coating is coated on the surface of the strip, it enters the coating drying furnace 29 to dry the moisture and solidify the coating.
  • the coating drying furnace 29 can be a conventional gas drying furnace, an air cushion drying furnace or an infrared drying furnace, etc.;
  • the finished product winding device can be a double winding machine, including a first finished product winding machine 33 and a second finished product winding machine 34; it is further preferred that an annealing coating outlet shear 32 is arranged between the coating drying furnace 29 and the finished product winding device, which is mainly used for shearing welds, sampling and coiling of the strip.
  • the above-mentioned annealing coating section also includes a degreasing device 25, which is arranged upstream of the annealing furnace 27 and can clean the emulsion or rolling oil on the surface of the strip.
  • the degreasing device 25 adopts a combination of cleaning methods such as alkaline solution cleaning + ultrasonic cleaning + electrolytic cleaning.
  • the annealing coating section further comprises a finished product trimming shear 31, which is used for trimming the finished product and shearing the strip steel to a set product width specification; the finished product trimming shear 31 can be a disc shear or the like.
  • the annealing coating section is provided with an annealing coating inlet looper 26 and an annealing coating outlet looper 30.
  • the annealing coating inlet looper 26 is in a full loop state, which can adjust the production rhythm of the previous and next processes to ensure the continuous operation of the unit;
  • the annealing coating outlet looper 30 is in an empty loop state during normal production, and is mainly used to store strip steel when the annealing coating section changes channels due to operations such as shearing welds and sampling, so as to ensure the continuous operation of the unit.
  • the normalizing pickling section and the continuous rolling section can be connected by a guide plate table, and the continuous rolling section and the annealing coating section can be connected by a guide plate table. It can also be connected through a guide plate table; but it is not limited to this process section connection method, for example, roller conveying equipment is also feasible.
  • a production line disconnection mechanism is provided between the normalizing pickling section and the continuous rolling section and between the continuous rolling section and the annealing coating section, so that the above-mentioned continuous production unit can be decomposed into two or three independent sub-units.
  • the non-oriented silicon steel fully continuous production system arranges the normalizing pickling section, continuous rolling section and annealing coating section into a continuous production unit, so that the hot-rolled coil can complete the production of the entire cold rolling process on a continuous production line, greatly reducing labor costs, saving factory space, reducing investment costs and operating costs, shortening product production cycles, and improving product quality.
  • the continuous production unit can be decomposed into two or three independent sub-units through the production line disconnection mechanism, which can not only improve the process flexibility of the production system, but also ensure that when some process sections of the continuous production unit are in an accident state or maintenance condition, the remaining process sections can continue to produce normally, thereby improving the operational reliability of the production system.
  • the production line disconnection mechanism includes a spare slitting shear, a spare winding device and a spare unwinding device.
  • the spare winding device is connected to the strip steel outlet of the adjacent previous process section, and the spare unwinding device is connected to the strip steel inlet of the adjacent next process section.
  • the spare slitting shear is arranged at the outlet of the adjacent previous process section and/or the entrance of the adjacent next process section.
  • slitting shears are provided at both the inlet and outlet of the normalized pickling section, the slitting shears on the inlet side of the normalized pickling section are the normalized pickling inlet shears 3, and the slitting shears on the outlet side of the normalized pickling section are the normalized pickling outlet shears 11; preferably, slitting shears are provided at both the inlet and outlet of the continuous rolling section, the slitting shears on the inlet side of the continuous rolling section are the continuous rolling inlet shears 15, and the slitting shears on the outlet side of the continuous rolling section are the continuous rolling outlet shears 19; preferably, slitting shears are provided at both the inlet and outlet of the annealing coating section, the slitting shears on the inlet side of the annealing coating section are the annealing coating inlet shears 23, and the slitting shears on the outlet side of the annealing coating
  • the normalized pickling outlet shears 11 and the continuous rolling inlet shears 15 can constitute spare slitting shears between the normalized pickling section and the continuous rolling section; the continuous rolling outlet shears 19
  • the annealing coating entrance shear 23 can constitute a spare slitting shear between the continuous rolling section and the annealing coating section.
  • the above-mentioned standby uncoiler device adopts a double uncoiler form, so that the corresponding independent sub-unit can achieve continuous production; specifically, the above-mentioned standby uncoiler device includes a first standby uncoiler, a second standby uncoiler and a standby welding machine, and the uncoiler channel of the first standby uncoiler and the uncoiler channel of the second standby uncoiler are both connected to the standby welding machine, and it is preferred to design one of the uncoiler channels to be colinear with the continuous production unit.
  • the standby coiler between the normal pickling section and the continuous rolling section is defined as the normal pickling standby coiler 12
  • the first standby uncoiler between the normal pickling section and the continuous rolling section is the first standby uncoiler 13 for continuous rolling
  • the second standby uncoiler is the second standby uncoiler 14 for continuous rolling
  • the uncoiling channel of the first standby uncoiler 13 for continuous rolling and the uncoiling channel of the second standby uncoiler 14 for continuous rolling are both provided with the above-mentioned continuous rolling entrance shear 15.
  • the standby coiler between the continuous rolling section and the annealing coating section is defined as the continuous rolling standby coiler 20, the first standby uncoiler between the continuous rolling section and the annealing coating section is the first standby uncoiler 21 for annealing coating, and the second standby uncoiler is the second standby uncoiler 22 for annealing coating; the uncoiling channel of the first standby uncoiler 21 for annealing coating and the uncoiling channel of the second standby uncoiler 22 for annealing coating are both provided with the above-mentioned annealing coating entrance shear 23.
  • the spare uncoiler is loaded with spare steel coils so that it can be put into use immediately in the event of an accident; when the spare steel coil has been uncoiled and threaded to the waiting position, the response speed of the production line disconnection mechanism can be further improved to ensure production reliability.
  • the standby welder can weld the online strip steel with the standby steel coil to achieve connection and continuous production, as well as connection between the steel coils on the two standby uncoilers.
  • the standby welder is arranged between the standby uncoiler and the next adjacent process section, and the waiting position of the standby steel coil can be at the standby welder.
  • the standby welder at the entrance side of the continuous rolling section is the continuous rolling standby welder 16
  • the standby welder at the entrance side of the annealing coating is the annealing coating standby welder 24.
  • the embodiment of the present invention also provides a method for producing non-oriented silicon steel in a continuous manner. Implementation of fully continuous production system for silicon steel;
  • the method comprises:
  • the upstream coils are processed in sequence through the normalizing pickling section, continuous rolling section and annealing coating section to obtain the target product;
  • At least one set of production line disconnection mechanisms is put into use to decompose the continuous production unit into two or three independent sub-units, and at least some of the independent sub-units continue production.
  • the spare slitting shear (normalized pickling outlet shear 11 or continuous rolling entrance shear 15) on the inlet side of the continuous rolling section cuts the strip steel, and the front strip steel runs at the tail-swinging speed to the continuous rolling standby welder 16 on the inlet side of the continuous rolling section, and the standby uncoiler on the inlet side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welder 16, and after the continuous rolling standby welder 16 welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to produce continuously.
  • the unit uses silicon steel normalized pickling coils as raw materials to produce the final silicon steel product.
  • the normalizing pickling section is disconnected from the continuous production system, and maintenance or troubleshooting can begin; after the maintenance or troubleshooting is completed, the strip at the outlet of the normalizing pickling section is forwarded to the waiting position at the entrance of the continuous rolling section and waits until the steel coil running on the spare uncoiler on the entrance side of the continuous rolling section is completed.
  • the strip is connected to the tail of the strip of the continuous rolling section on the continuous rolling standby welding machine 16 to restore the continuous production state of the entire system.
  • the spare slitting shear i.e., the normalized pickling outlet shear 11
  • the tail of the front strip continues to move forward a distance D1 to leave the normalized pickling section
  • the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the normalized pickling spare coiler 12) on the outlet side of the normalized pickling section for coiling, and the normalized pickling section starts independent continuous production; wherein, optionally, D1 is about 5m.
  • the spare slitting shear continuous rolling outlet shear 19 or annealing coating inlet on the inlet side of the annealing coating section
  • the mouth shear 23 cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welding machine 24 at the entrance side of the annealing coating section.
  • the standby uncoiler at the entrance side of the annealing coating section uncoils the standby steel coil and passes the strip head to the annealing coating standby welding machine 24. After the annealing coating standby welding machine 24 welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production.
  • the unit uses silicon steel hot-rolled coils and silicon steel cold-hardened coils as raw materials to produce silicon steel normalized pickling coils and silicon steel final products.
  • the silicon steel normalized pickling coils can be kept in this production system for backup, or used for production by other rolling mills in the workshop, or sold as normalized pickling intermediate products.
  • the continuous rolling section is disconnected from the continuous production system, and maintenance or fault handling can be started; after the maintenance or fault handling is completed, the steel coil being wound on the normal pickling standby coiler 12 is wound up, and the strip at the outlet of the normal pickling section is forwarded to the continuous rolling standby welder 16 to be connected with the strip at the continuous rolling section.
  • the strip at the outlet of the continuous rolling section is connected with the strip at the inlet of the annealing coating section at the annealing coating standby welder 24 to restore the continuous production state of the entire system.
  • the spare slitting shear i.e., the continuous rolling exit shear 19
  • the tail of the front strip continues to move forward a distance D2 to leave the continuous rolling section
  • the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the continuous rolling spare coiler 20) on the exit side of the continuous rolling section for coiling, and the normalizing pickling section and the continuous rolling section continue to carry out continuous production.
  • D2 is about 5m.
  • the unit uses silicon steel hot-rolled coils as raw materials to produce silicon steel cold-hardened coils.
  • Silicon steel cold-hardened coils can be kept in this production system for standby, or used by other annealing coating units in the workshop, or sold as cold-hardened coil intermediate products.
  • the annealing coating section is disconnected from the continuous production system, and maintenance or troubleshooting can begin; after the maintenance or troubleshooting is completed, the steel coil being coiled on the standby coiler 20 of the continuous rolling mill is completed, and the continuous rolling mill is connected to the standby coiler 20.
  • the strip steel at the rolling section outlet is connected to the strip steel at the annealing coating section inlet at the annealing coating standby welder 24 to restore the continuous production state of the entire system.
  • the spare slitting shear (continuous rolling exit shear 19 or annealing coating entrance shear 23) on the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welder 24 on the entrance side of the annealing coating section, and the standby unwinder on the entrance side of the annealing coating section unwinds the standby steel coil and passes the strip head to the annealing coating standby welder 24, and after the annealing coating standby welder 24 welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production.
  • the unit uses silicon steel cold hard coil as raw material to produce the final silicon steel product.
  • the spare slitting shear i.e., the normalized pickling outlet shear 11
  • the tail of the front strip continues to move forward a distance D1 to leave the normalized pickling section
  • the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the normalized pickling spare coiler 12) at the outlet side of the normalized pickling section for coiling, and the normalized pickling section starts independent continuous production.
  • the unit uses silicon steel hot-rolled coils as raw materials to produce silicon steel normalized pickling coils; silicon steel normalized pickling coils can be kept in this production system for standby, or used for production by other rolling mills in the workshop, or sold as normalized pickling intermediate products.
  • the spare slitting shears (normalized pickling outlet shears 11 or continuous rolling inlet shears 15) on the inlet side of the continuous rolling section and the spare slitting shears (i.e., continuous rolling outlet shears 19) on the outlet side cut the strip steel respectively, wherein, on the inlet side of the continuous rolling section, the front strip steel runs at the tail swinging speed to the continuous rolling standby welding machine 16 on the inlet side of the continuous rolling section, the standby uncoiler on the inlet side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine 16, and the continuous rolling standby welding machine 16 welds the corresponding strip tail and the corresponding strip At the same time, at the exit of the continuous rolling section, the tail of the leading strip continues to move forward for a distance D2 to leave the continuous
  • the unit uses silicon steel normalized pickled coils as raw materials to produce silicon steel chilled coils; silicon steel chilled coils can be kept in this production system for standby, or used by other annealing and coating units in the workshop, or sold as intermediate products of chilled coils.
  • the standby uncoiler is loaded with standby steel coils, which should be able to directly meet the production requirements of the next process section.
  • the standby steel coils on the standby uncoiler at the entrance of the continuous rolling section are silicon steel coils after normalizing and pickling;
  • the standby steel coils on the standby uncoiler at the entrance of the annealing and coating section are silicon steel chilled coils of the specified thickness of the rolled products.
  • the spare steel coils are put into production on the continuous production system according to the above-mentioned system disconnection method, and new spare steel coils are added to ensure the quality of the spare steel coils.

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Abstract

The present invention relates to a non-oriented silicon steel full-continuous production system, comprising a normalizing and pickling section, a continuous rolling section, and an annealing and coating section. The normalizing and pickling section, the continuous rolling section, and the annealing and coating section are sequentially connected along a strip steel running direction to form a continuous production unit; and production line disconnection mechanisms are arranged between the normalizing and pickling section and the continuous rolling section and between the continuous rolling section and the annealing and coating section. Correspondingly, the present invention further provides a non-oriented silicon steel full-continuous production method. According to the present invention, the entire cold-rolling process of a hot-rolled coil in production can be completed on one continuous production line, thereby greatly reducing the investment cost and the operation cost, shortening the product production period, and improving the quality of products. By means of the production line disconnection mechanisms, the continuous production unit can be divided into two or three independent sub-units, so that the process flexibility of the production system can be improved, and it can be ensured that when some of the process sections of the continuous production unit are in a fault state or in a maintenance condition, the remaining process sections can still continue normal production, thereby improving the operation reliability of the production system.

Description

无取向硅钢全连续生产系统及方法Fully continuous production system and method for non-oriented silicon steel 技术领域Technical Field
本发明涉及一种无取向硅钢全连续生产系统及无取向硅钢全连续生产方法。The invention relates to a fully continuous production system and a fully continuous production method of non-oriented silicon steel.
背景技术Background technique
硅钢是国民经济建设基础性功能材料，是电力、电器和军工等领域不可或缺的软磁合金，被广泛用于制造电机、发电机、变压器、整流器铁芯以及各种电力电子元器件，在电能的生成、传输与使用方面起到了关键的作用。其生产流程长，工艺复杂。Silicon steel is a basic functional material for national economic construction. It is an indispensable soft magnetic alloy in the fields of electricity, electrical appliances and military industry. It is widely used in the manufacture of motors, generators, transformers, rectifier cores and various power electronic components, playing a key role in the generation, transmission and use of electric energy. Its production process is long and the process is complex.
无取向硅钢通用的生产工艺流程为：铁水脱硫→冶炼→真空处理→连铸+电磁搅拌→热连轧→(常化)+酸洗→冷轧→成品退火+涂层。以上各个子流程经过多年的生产和研究都得到了长足的发展，技术较为成熟稳定。从热轧卷到成品卷的生产，目前全球几乎所有的生产企业都是按如下工序进行：The general production process of non-oriented silicon steel is: hot metal desulfurization → smelting → vacuum treatment → continuous casting + electromagnetic stirring → hot rolling → (normalization) + pickling → cold rolling → finished product annealing + coating. After years of production and research, each of the above sub-processes has made great progress, and the technology is relatively mature and stable. From the production of hot-rolled coils to finished coils, almost all production companies in the world currently follow the following process:
中高牌号产品：常化酸洗机组→单机架可逆轧机→连续退火涂层机组→精整包装机组，或者常化机组→酸洗连轧机组→连续退火涂层机组→精整包装机组；Medium and high grade products: normalizing pickling unit → single-stand reversible rolling mill → continuous annealing and coating unit → finishing and packaging unit, or normalizing unit → pickling and rolling unit → continuous annealing and coating unit → finishing and packaging unit;
中低牌号产品：酸洗连轧机组→连续退火涂层机组→精整包装机组。Medium and low grade products: pickling and rolling unit → continuous annealing and coating unit → finishing and packaging unit.
按现有方案，从热轧卷到成品卷的生产，中高牌号产品至少配置4条机组，中低牌号产品至少配置3条机组，各机组之间配置3～4天的中间库，用于各机组之间的缓冲；前后两机组之间，钢卷需要经过至少2次的吊运。可见，目前无取向硅钢的生产工艺存在流程较长、占地面积较大、生产成本较高等问题。According to the existing plan, from hot-rolled coils to finished coils, at least 4 units are configured for medium and high grade products, and at least 3 units are configured for medium and low grade products. A 3-4-day intermediate warehouse is configured between each unit for buffering between units; between the front and rear units, the steel coil needs to be hoisted at least twice. It can be seen that the current production process of non-oriented silicon steel has problems such as long process, large floor space, and high production cost.
发明内容 Summary of the invention
本发明涉及一种无取向硅钢全连续生产系统及方法，至少可解决现有技术的部分缺陷。The present invention relates to a fully continuous production system and method for non-oriented silicon steel, which can at least solve some defects of the prior art.
本发明涉及一种无取向硅钢全连续生产系统，包括常化酸洗段、连轧段和退火涂层段，所述常化酸洗段、所述连轧段及所述退火涂层段沿带钢运行方向依次衔接布置组成连续生产机组，所述常化酸洗段与所述连轧段之间以及所述连轧段与所述退火涂层段之间均设有产线断开机构。The present invention relates to a fully continuous production system for non-oriented silicon steel, comprising a normalizing pickling section, a continuous rolling section and an annealing coating section. The normalizing pickling section, the continuous rolling section and the annealing coating section are sequentially connected and arranged along the running direction of the strip steel to form a continuous production unit, and a production line disconnection mechanism is provided between the normalizing pickling section and the continuous rolling section, as well as between the continuous rolling section and the annealing coating section.
作为实施方式之一，所述产线断开机构包括备用分切剪、备用卷取装置、备用开卷装置和备用焊机，所述备用卷取装置与相邻的上一工艺段的带钢出口衔接，所述备用开卷装置、所述备用焊机以及相邻的下一工艺段的带钢入口依次衔接，所述备用分切剪布置于相邻上一工艺段的出口和/或相邻下一工艺段的入口。As one of the embodiments, the production line disconnection mechanism includes a spare slitting shear, a spare coiling device, a spare uncoiling device and a spare welding machine. The spare coiling device is connected with the strip steel outlet of the adjacent previous process section, and the spare uncoiling device, the spare welding machine and the strip steel inlet of the adjacent next process section are connected in sequence. The spare slitting shear is arranged at the outlet of the adjacent previous process section and/or the entrance of the adjacent next process section.
作为实施方式之一，所述常化酸洗段配置有常化酸洗入口活套和常化酸洗出口活套；和/或，所述退火涂层段配置有退火涂层入口活套和退火涂层出口活套。As one of the embodiments, the normalizing pickling section is provided with a normalizing pickling inlet looper and a normalizing pickling outlet looper; and/or, the annealing coating section is provided with an annealing coating inlet looper and an annealing coating outlet looper.
作为实施方式之一，所述连轧段配置有连轧入口活套。As one of the implementation modes, the continuous rolling section is provided with a continuous rolling entrance looper.
本发明还涉及一种无取向硅钢全连续生产方法，基于上述的无取向硅钢全连续生产系统实施；The present invention also relates to a fully continuous production method for non-oriented silicon steel, which is implemented based on the above-mentioned fully continuous production system for non-oriented silicon steel;
所述方法包括：The method comprises:
正常生产状况下，上游来卷依次经所述常化酸洗段、连轧段和退火涂层段处理，得到目标产品；Under normal production conditions, the upstream coils are processed in sequence through the normalizing pickling section, continuous rolling section and annealing coating section to obtain the target product;
事故状态或检修工况时，至少其中一组产线断开机构投入使用，将所述连续生产机组分解为两个或三个独立子机组，至少部分独立子机组继续生产。In an accident state or maintenance condition, at least one set of production line disconnection mechanisms is put into use to decompose the continuous production unit into two or three independent sub-units, and at least some of the independent sub-units continue production.
进一步地，所述方法包括： Furthermore, the method comprises:
所述常化酸洗段出现故障停车或需要检修时，连轧段入口侧的备用分切剪将带钢切断，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机处，连轧备用焊机将对应带尾和对应带头焊接后，连轧段与退火涂层段继续进行连续生产。When the normalizing pickling section stops due to a fault or needs to be repaired, the spare slitting shear on the entrance side of the continuous rolling section cuts the strip, and the front strip runs at the tail-swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section, and the standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine. After the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to carry out continuous production.
进一步地，所述方法包括：Further, the method comprises:
所述连轧段出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机进行卷取，常化酸洗段开始独立连续生产；When the continuous rolling section stops due to a fault or needs to be repaired, the spare slitting shear at the outlet side of the normal pickling section cuts the strip steel, the tail of the front strip steel continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip steel moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
退火涂层段入口侧的备用分切剪将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该退火涂层备用焊机处，退火涂层备用焊机将对应带尾和对应带头焊接后，退火涂层段开始独立连续生产。The standby slitting shear on the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welding machine on the entrance side of the annealing coating section. The standby uncoiler on the entrance side of the annealing coating section uncoils the standby steel coil and passes the strip head to the annealing coating standby welding machine. After the annealing coating standby welding machine welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production.
进一步地，所述方法包括Furthermore, the method comprises
所述退火涂层段出现故障停车或需要检修时，连轧段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机进行卷取，常化酸洗段和连轧段继续进行连续生产。When the annealing coating section fails and stops or needs maintenance, the spare slitting shear on the outlet side of the continuous rolling section cuts the strip, the tail of the front strip continues to run forward a distance D2 to leave the continuous rolling section, and the head of the rear strip runs forward at the threading speed to the spare coiler on the outlet side of the continuous rolling section for coiling, and the normalizing pickling section and the continuous rolling section continue to carry out continuous production.
进一步地，所述方法包括：Further, the method comprises:
所述常化酸洗段和所述连轧段均出现故障停车或需要检修时，退火涂层段入口侧的备用分切剪将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并 使带头穿带至该退火涂层备用焊机处，退火涂层备用焊机将对应带尾和对应带头焊接后，退火涂层段开始独立连续生产；When both the normalizing pickling section and the continuous rolling section fail to operate or need to be repaired, the spare slitting shear at the entrance of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail-swinging speed to the annealing coating spare welding machine at the entrance of the annealing coating section, and the spare uncoiling machine at the entrance of the annealing coating section uncoils the spare steel coil and The strip head is passed to the annealing coating standby welding machine. After the annealing coating standby welding machine welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production;
所述连轧段和所述退火涂层段均出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机进行卷取，常化酸洗段开始独立连续生产；When both the continuous rolling section and the annealing and coating section fail to stop or need to be repaired, the spare slitting shear at the outlet side of the normal pickling section cuts the strip, the tail of the front strip continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
所述常化酸洗段和所述退火涂层段均出现故障停车或需要检修时，连轧段入口侧和出口侧的备用分切剪分别将带钢切断，其中，在连轧段入口侧，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机处，连轧备用焊机将对应带尾和对应带头焊接；与此同时，在连轧段出口侧，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机进行卷取，连轧段开始独立连续生产。When both the normalizing pickling section and the annealing coating section fail to stop or need to be repaired, the spare slitting shears on the entrance and exit sides of the continuous rolling section cut the strip steel respectively, wherein, on the entrance side of the continuous rolling section, the front strip steel runs at the tail swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section, the standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine, and the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head; meanwhile, on the exit side of the continuous rolling section, the strip tail of the front strip steel continues to run forward a distance D2 to leave the continuous rolling section, the strip head of the rear strip steel runs forward at the strip passing speed to the standby coiler on the exit side of the continuous rolling section for coiling, and the continuous rolling section starts independent continuous production.
进一步地，所述方法包括：Further, the method comprises:
连轧段入口侧的备用开卷机和/或退火涂层段入口侧的备用开卷机上装载有备用钢卷，所述备用钢卷已开卷穿带至等待位，以便于事故状态下能够立即投入使用。The spare uncoiler at the entrance side of the continuous rolling section and/or the spare uncoiler at the entrance side of the annealing and coating section is loaded with spare steel coils, which have been uncoiled and threaded to the waiting position so that they can be put into use immediately in an accident state.
本发明至少具有如下有益效果：The present invention has at least the following beneficial effects:
本发明将常化酸洗段、连轧段和退火涂层段布置形成为连续生产机组，使得热轧卷在一条连续生产线上即能完成冷轧全工序的生产，极大地降低人工成本，节约工厂占地，降低投资成本和运行成本，缩短产品生产周期，提高产品质量。通过产线断开机构可以将连续生产机组分解为两个或三个独立子机组，不仅能提高该生产系统的工艺灵活性，而且能保证连续生产机组在部分工艺段 处于事故状态或检修工况时，其余工艺段仍能继续正常生产，从而提高该生产系统的运行可靠性。The present invention arranges the normalizing pickling section, continuous rolling section and annealing coating section into a continuous production unit, so that the hot-rolled coil can complete the production of the entire cold rolling process on a continuous production line, greatly reducing labor costs, saving factory space, reducing investment costs and operating costs, shortening product production cycles, and improving product quality. The continuous production unit can be decomposed into two or three independent sub-units through the production line disconnection mechanism, which can not only improve the process flexibility of the production system, but also ensure that the continuous production unit can be disconnected in some process sections. When in an accident state or maintenance condition, the remaining process sections can continue to produce normally, thereby improving the operational reliability of the production system.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
图1为本发明实施例提供的无取向硅钢全连续生产系统的结构示意图。FIG1 is a schematic structural diagram of a fully continuous production system for non-oriented silicon steel provided in an embodiment of the present invention.
具体实施方式Detailed ways
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
如图1，本发明实施例提供一种无取向硅钢全连续生产系统，包括常化酸洗段、连轧段和退火涂层段，所述常化酸洗段、所述连轧段及所述退火涂层段沿带钢运行方向依次衔接布置组成连续生产机组。As shown in Figure 1, an embodiment of the present invention provides a fully continuous production system for non-oriented silicon steel, including a normalizing pickling section, a continuous rolling section and an annealing coating section. The normalizing pickling section, the continuous rolling section and the annealing coating section are arranged in sequence along the running direction of the strip to form a continuous production unit.
常化酸洗段主要用于热轧硅钢原料的常化和酸洗处理，使热轧板组织再结晶、析出物粗化，同时，去除热轧板表面的氧化铁皮。优选地，常化酸洗段具备处理1.6mm～3.5mm热轧硅钢原料的能力。The normalizing and pickling section is mainly used for normalizing and pickling of hot-rolled silicon steel raw materials, so as to recrystallize the hot-rolled plate structure and coarsen the precipitates, and at the same time, remove the iron oxide scale on the surface of the hot-rolled plate. Preferably, the normalizing and pickling section has the ability to process 1.6mm to 3.5mm hot-rolled silicon steel raw materials.
在其中一个实施例中，如图1，常化酸洗段包括机组开卷装置、常化酸洗入口剪3、常化酸洗焊机4、常化炉7和酸洗装置9；其中，机组开卷装置采用双开卷装置，包括第一原料开卷机1和第二原料开卷机2；常化酸洗入口剪3能将带头和带尾质量不合格的部分剪切掉；处理后的带头和带尾在常化酸洗焊机4 处完成焊接，该常化酸洗焊机4可采用激光焊机或氩弧焊机等。In one embodiment, as shown in FIG1 , the normalized pickling section includes a unit unwinding device, a normalized pickling inlet shear 3, a normalized pickling welder 4, a normalized furnace 7 and a pickling device 9; wherein the unit unwinding device adopts a double unwinding device, including a first raw material unwinding machine 1 and a second raw material unwinding machine 2; the normalized pickling inlet shear 3 can shear off the unqualified parts of the strip head and the strip tail; the treated strip head and the strip tail are placed in the normalized pickling welder 4 The welding is completed at the normalizing pickling welder 4, and the normalizing pickling welder 4 can be a laser welder or a argon arc welder.
优选地，上述常化炉7采用预热→加热→均热→冷却的处理工艺，常化炉7出来的带钢被冷却到80℃以下。进一步地，在常化炉7与酸洗装置9之间布置有带钢表面处理装置，例如可采用抛丸机8等，常化后的带钢进入抛丸机8进行抛丸处理，经过细小的丸粒高速的击打带钢表面，可去除80％以上的氧化铁皮，剩余的氧化铁皮也因抛丸变得疏松，以便于后续的酸洗。Preferably, the normalizing furnace 7 adopts a treatment process of preheating → heating → soaking → cooling, and the strip steel coming out of the normalizing furnace 7 is cooled to below 80°C. Furthermore, a strip steel surface treatment device is arranged between the normalizing furnace 7 and the pickling device 9, such as a shot blasting machine 8, and the normalized strip steel enters the shot blasting machine 8 for shot blasting treatment. The fine shot particles hit the strip steel surface at high speed, which can remove more than 80% of the iron oxide scale, and the remaining iron oxide scale becomes loose due to shot blasting, so as to facilitate subsequent pickling.
在其中一个实施例中，酸洗装置9采用HCl酸洗模式，设置3～5段酸洗槽，酸洗槽的酸液浓度沿带钢运行方向依次递减。根据酸洗段的长度，优选地，在酸洗槽内部设置纠偏设施，用于纠正带钢在酸洗槽内部的跑偏。In one embodiment, the pickling device 9 adopts the HCl pickling mode, and 3 to 5 pickling tanks are provided, and the acid concentration of the pickling tanks decreases in sequence along the running direction of the strip. According to the length of the pickling section, preferably, a correction facility is provided inside the pickling tank to correct the deviation of the strip inside the pickling tank.
在其中一个实施例中，如图1，在常化酸洗焊机4与常化炉7之间还设有原料切边剪5，可以对焊接后的带钢进行切边处理，可以切除边部质量较差的部分，以提高后续轧制效果。该原料切边剪5可采用圆盘剪等。In one embodiment, as shown in FIG1 , a raw material trimming shear 5 is provided between the normalizing pickling welding machine 4 and the normalizing furnace 7, which can trim the welded strip and remove the portion with poor edge quality to improve the subsequent rolling effect. The raw material trimming shear 5 can be a disc shear or the like.
在其中一个实施例中，所述常化酸洗段配置有常化酸洗入口活套6和常化酸洗出口活套10，正常生产时，常化酸洗入口活套6处于满套状态，可以调节前后工序的生产节奏，保证机组连续运行；常化酸洗出口活套10处于空套位状态。In one of the embodiments, the normalized pickling section is equipped with a normalized pickling inlet looper 6 and a normalized pickling outlet looper 10. During normal production, the normalized pickling inlet looper 6 is in a full loop state, which can adjust the production rhythm of the previous and subsequent processes to ensure continuous operation of the unit; the normalized pickling outlet looper 10 is in an empty loop state.
上述连轧段主要用于将热轧带钢连续轧薄到规定的厚度，例如可以将1.6mm～3.5mmm厚的热轧带钢连续轧薄到0.15mm～0.65mm。该连轧段包括连轧机18，该连轧机18根据原料和成品规格不同可采用三机架或者以上机架的形式，每个机架的形式可以是6辊轧机或者18辊轧机，或者二者的不同组合等。The continuous rolling section is mainly used to continuously thin the hot-rolled steel strip to a specified thickness, for example, a hot-rolled steel strip with a thickness of 1.6 mm to 3.5 mm can be continuously thinned to 0.15 mm to 0.65 mm. The continuous rolling section includes a continuous rolling mill 18, which can be in the form of three or more frames according to different specifications of raw materials and finished products, and each frame can be in the form of a 6-roll mill or an 18-roll mill, or different combinations of the two.
在其中一个实施例中，所述连轧段配置有连轧入口活套17，可以调节前后工序的生产节奏，保证机组连续运行，正常生产时，该连轧入口活套17处于满套状态。 In one of the embodiments, the continuous rolling section is equipped with a continuous rolling entrance looper 17, which can adjust the production rhythm of the previous and next processes to ensure the continuous operation of the unit. During normal production, the continuous rolling entrance looper 17 is in a full set state.
退火涂层段主要用于冷轧后带钢的再结晶退火和涂覆绝缘涂层，优选地，退火涂层段具备处理0.15mm～0.65mm冷轧硅钢薄带。优选地，该退火涂层段包括退火炉27、涂层机28、涂层干燥炉29和成品卷取装置；其中，退火炉27用于对带钢进行退火处理，根据机组速度的不同，退火炉27的形式可采用单层卧式退火炉27，多层往复卧式，或立式+多层往复卧式+立式退火炉27；退火炉27的加热段可采用全燃气加热式，纵磁感应加热+横磁感应加热式，或燃气加热+感应加热式等多种形式。退火后的带钢进入涂层机28涂覆绝缘涂层；带钢表面涂覆绝缘涂层后进入涂层干燥炉29烘干水分和固化涂层，根据机组速度及涂层种类的不同，涂层干燥炉29可采用常规燃气干燥炉、气垫式干燥炉或红外干燥炉等形式；成品卷取装置可以采用双卷取机形式，包括第一成品卷取机33和第二成品卷取机34；进一步优选为在涂层干燥炉29与成品卷取装置之间布置有退火涂层出口剪32，主要用于带钢剪切焊缝、取样和分卷等。The annealing coating section is mainly used for recrystallization annealing and insulating coating of the strip steel after cold rolling. Preferably, the annealing coating section is capable of processing 0.15mm to 0.65mm cold-rolled silicon steel thin strips. Preferably, the annealing coating section includes an annealing furnace 27, a coating machine 28, a coating drying furnace 29 and a finished product coiling device; wherein, the annealing furnace 27 is used to anneal the strip steel. According to the different speeds of the unit, the annealing furnace 27 can be in the form of a single-layer horizontal annealing furnace 27, a multi-layer reciprocating horizontal annealing furnace, or a vertical + multi-layer reciprocating horizontal + vertical annealing furnace 27; the heating section of the annealing furnace 27 can be in the form of full gas heating, longitudinal magnetic induction heating + transverse magnetic induction heating, or gas heating + induction heating and other forms. The annealed strip enters the coating machine 28 to be coated with an insulating coating; after the insulating coating is coated on the surface of the strip, it enters the coating drying furnace 29 to dry the moisture and solidify the coating. Depending on the unit speed and the type of coating, the coating drying furnace 29 can be a conventional gas drying furnace, an air cushion drying furnace or an infrared drying furnace, etc.; the finished product winding device can be a double winding machine, including a first finished product winding machine 33 and a second finished product winding machine 34; it is further preferred that an annealing coating outlet shear 32 is arranged between the coating drying furnace 29 and the finished product winding device, which is mainly used for shearing welds, sampling and coiling of the strip.
进一步地，上述退火涂层段还包括脱脂装置25，该脱脂装置25布置在退火炉27的上游，可以清洗掉带钢表面的乳化液或轧制油，该脱脂装置25采用碱液清洗+超声波清洗+电解清洗等多种方式组合清洗。Furthermore, the above-mentioned annealing coating section also includes a degreasing device 25, which is arranged upstream of the annealing furnace 27 and can clean the emulsion or rolling oil on the surface of the strip. The degreasing device 25 adopts a combination of cleaning methods such as alkaline solution cleaning + ultrasonic cleaning + electrolytic cleaning.
进一步地，上述退火涂层段还包括成品切边剪31，用于成品的切边，将带钢剪切到设定的产品宽度规格；该成品切边剪31可采用圆盘剪等。Furthermore, the annealing coating section further comprises a finished product trimming shear 31, which is used for trimming the finished product and shearing the strip steel to a set product width specification; the finished product trimming shear 31 can be a disc shear or the like.
在其中一个实施例中，所述退火涂层段配置有退火涂层入口活套26和退火涂层出口活套30，正常生产时，退火涂层入口活套26处于满套状态，可以调节前后工序的生产节奏，保证机组连续运行；退火涂层出口活套30在正常生产时处于空套位状态，其主要用于在退火涂层段因剪切焊缝和取样等操作而变换通道时储存带钢，以保证机组的连续运行。In one of the embodiments, the annealing coating section is provided with an annealing coating inlet looper 26 and an annealing coating outlet looper 30. During normal production, the annealing coating inlet looper 26 is in a full loop state, which can adjust the production rhythm of the previous and next processes to ensure the continuous operation of the unit; the annealing coating outlet looper 30 is in an empty loop state during normal production, and is mainly used to store strip steel when the annealing coating section changes channels due to operations such as shearing welds and sampling, so as to ensure the continuous operation of the unit.
常化酸洗段与连轧段之间可以通过导板台衔接，连轧段与退火涂层段之间 也可以通过导板台衔接；但并不限于该工艺段衔接方式，例如辊式输送设备也是可行的。The normalizing pickling section and the continuous rolling section can be connected by a guide plate table, and the continuous rolling section and the annealing coating section can be connected by a guide plate table. It can also be connected through a guide plate table; but it is not limited to this process section connection method, for example, roller conveying equipment is also feasible.
进一步优化上述无取向硅钢全连续生产系统，如图1，所述常化酸洗段与所述连轧段之间以及所述连轧段与所述退火涂层段之间均设有产线断开机构，从而可以将上述连续生产机组分解为两个或三个独立子机组。To further optimize the above-mentioned non-oriented silicon steel fully continuous production system, as shown in FIG1 , a production line disconnection mechanism is provided between the normalizing pickling section and the continuous rolling section and between the continuous rolling section and the annealing coating section, so that the above-mentioned continuous production unit can be decomposed into two or three independent sub-units.
本实施例提供的无取向硅钢全连续生产系统，将常化酸洗段、连轧段和退火涂层段布置形成为连续生产机组，使得热轧卷在一条连续生产线上即能完成冷轧全工序的生产，极大地降低人工成本，节约工厂占地，降低投资成本和运行成本，缩短产品生产周期，提高产品质量。通过产线断开机构可以将连续生产机组分解为两个或三个独立子机组，不仅能提高该生产系统的工艺灵活性，而且能保证连续生产机组在部分工艺段处于事故状态或检修工况时，其余工艺段仍能继续正常生产，从而提高该生产系统的运行可靠性。The non-oriented silicon steel fully continuous production system provided in this embodiment arranges the normalizing pickling section, continuous rolling section and annealing coating section into a continuous production unit, so that the hot-rolled coil can complete the production of the entire cold rolling process on a continuous production line, greatly reducing labor costs, saving factory space, reducing investment costs and operating costs, shortening product production cycles, and improving product quality. The continuous production unit can be decomposed into two or three independent sub-units through the production line disconnection mechanism, which can not only improve the process flexibility of the production system, but also ensure that when some process sections of the continuous production unit are in an accident state or maintenance condition, the remaining process sections can continue to produce normally, thereby improving the operational reliability of the production system.
在其中一个实施例中，如图1，所述产线断开机构包括备用分切剪、备用卷取装置和备用开卷装置，所述备用卷取装置与相邻的上一工艺段的带钢出口衔接，所述备用开卷装置与相邻的下一工艺段的带钢入口衔接，所述备用分切剪布置于相邻上一工艺段的出口和/或相邻下一工艺段的入口。In one embodiment, as shown in Figure 1, the production line disconnection mechanism includes a spare slitting shear, a spare winding device and a spare unwinding device. The spare winding device is connected to the strip steel outlet of the adjacent previous process section, and the spare unwinding device is connected to the strip steel inlet of the adjacent next process section. The spare slitting shear is arranged at the outlet of the adjacent previous process section and/or the entrance of the adjacent next process section.
优选为在常化酸洗段的入口和出口均设置有分切剪，常化酸洗段入口侧的分切剪为常化酸洗入口剪3，常化酸洗段出口侧的分切剪为常化酸洗出口剪11；优选为在连轧段的入口和出口均设置有分切剪，连轧段入口侧的分切剪为连轧入口剪15，连轧段出口侧的分切剪为连轧出口剪19；优选为在退火涂层段的入口和出口均设置有分切剪，退火涂层段入口侧的分切剪为退火涂层入口剪23，退火涂层段出口侧的分切剪为退火涂层出口剪32。其中，常化酸洗出口剪11和连轧入口剪15可以构成常化酸洗段与连轧段之间的备用分切剪；连轧出口剪19 和退火涂层入口剪23可以构成连轧段与退火涂层段之间的备用分切剪。Preferably, slitting shears are provided at both the inlet and outlet of the normalized pickling section, the slitting shears on the inlet side of the normalized pickling section are the normalized pickling inlet shears 3, and the slitting shears on the outlet side of the normalized pickling section are the normalized pickling outlet shears 11; preferably, slitting shears are provided at both the inlet and outlet of the continuous rolling section, the slitting shears on the inlet side of the continuous rolling section are the continuous rolling inlet shears 15, and the slitting shears on the outlet side of the continuous rolling section are the continuous rolling outlet shears 19; preferably, slitting shears are provided at both the inlet and outlet of the annealing coating section, the slitting shears on the inlet side of the annealing coating section are the annealing coating inlet shears 23, and the slitting shears on the outlet side of the annealing coating section are the annealing coating outlet shears 32. Among them, the normalized pickling outlet shears 11 and the continuous rolling inlet shears 15 can constitute spare slitting shears between the normalized pickling section and the continuous rolling section; the continuous rolling outlet shears 19 The annealing coating entrance shear 23 can constitute a spare slitting shear between the continuous rolling section and the annealing coating section.
在其中一个实施例中，上述备用开卷装置采用双开卷机形式，可以使对应的独立子机组能够实现连续生产；具体地，上述备用开卷装置包括第一备用开卷机、第二备用开卷机和备用焊机，第一备用开卷机的开卷通道和第二备用开卷机的开卷通道均与备用焊机衔接，优选为设计其中一条开卷通道与连续生产机组共线。In one of the embodiments, the above-mentioned standby uncoiler device adopts a double uncoiler form, so that the corresponding independent sub-unit can achieve continuous production; specifically, the above-mentioned standby uncoiler device includes a first standby uncoiler, a second standby uncoiler and a standby welding machine, and the uncoiler channel of the first standby uncoiler and the uncoiler channel of the second standby uncoiler are both connected to the standby welding machine, and it is preferred to design one of the uncoiler channels to be colinear with the continuous production unit.
其中，定义常化酸洗段与连轧段之间的备用卷取机为常化酸洗备用卷取机12，常化酸洗段与连轧段之间的第一备用开卷机为连轧第一备用开卷机13，第二备用开卷机为连轧第二备用开卷机14；连轧第一备用开卷机13的开卷通道和连轧第二备用开卷机14的开卷通道上均设有上述连轧入口剪15。定义连轧段与退火涂层段之间的备用卷取机为连轧备用卷取机20，连轧段与退火涂层段之间的第一备用开卷机为退火涂层第一备用开卷机21，第二备用开卷机为退火涂层第二备用开卷机22；退火涂层第一备用开卷机21的开卷通道和退火涂层第二备用开卷机22的开卷通道上均设有上述退火涂层入口剪23。Among them, the standby coiler between the normal pickling section and the continuous rolling section is defined as the normal pickling standby coiler 12, the first standby uncoiler between the normal pickling section and the continuous rolling section is the first standby uncoiler 13 for continuous rolling, and the second standby uncoiler is the second standby uncoiler 14 for continuous rolling; the uncoiling channel of the first standby uncoiler 13 for continuous rolling and the uncoiling channel of the second standby uncoiler 14 for continuous rolling are both provided with the above-mentioned continuous rolling entrance shear 15. The standby coiler between the continuous rolling section and the annealing coating section is defined as the continuous rolling standby coiler 20, the first standby uncoiler between the continuous rolling section and the annealing coating section is the first standby uncoiler 21 for annealing coating, and the second standby uncoiler is the second standby uncoiler 22 for annealing coating; the uncoiling channel of the first standby uncoiler 21 for annealing coating and the uncoiling channel of the second standby uncoiler 22 for annealing coating are both provided with the above-mentioned annealing coating entrance shear 23.
在正常生产状况下，备用开卷机上装载有备用钢卷，以便于事故状态下能够立即投入使用；当该备用钢卷已开卷穿带至等待位等待时，则能进一步提高产线断开机构的响应速度，保证生产可靠性。Under normal production conditions, the spare uncoiler is loaded with spare steel coils so that it can be put into use immediately in the event of an accident; when the spare steel coil has been uncoiled and threaded to the waiting position, the response speed of the production line disconnection mechanism can be further improved to ensure production reliability.
备用焊机可以将在线带钢与备用钢卷焊连以实现衔接、连续式生产，以及两台备用开卷机上的钢卷之间的衔接投入。该备用焊机布置在备用开卷机与相邻的下一工艺段之间，上述备用钢卷的等待位可以在该备用焊机处。其中，连轧段入口侧的备用焊机为连轧备用焊机16，退火涂层入口侧的备用焊机为退火涂层备用焊机24。The standby welder can weld the online strip steel with the standby steel coil to achieve connection and continuous production, as well as connection between the steel coils on the two standby uncoilers. The standby welder is arranged between the standby uncoiler and the next adjacent process section, and the waiting position of the standby steel coil can be at the standby welder. Among them, the standby welder at the entrance side of the continuous rolling section is the continuous rolling standby welder 16, and the standby welder at the entrance side of the annealing coating is the annealing coating standby welder 24.
本发明实施例还提供一种无取向硅钢全连续生产方法，其基于上述无取向 硅钢全连续生产系统实施；The embodiment of the present invention also provides a method for producing non-oriented silicon steel in a continuous manner. Implementation of fully continuous production system for silicon steel;
所述方法包括：The method comprises:
正常生产状况下，上游来卷依次经所述常化酸洗段、连轧段和退火涂层段处理，得到目标产品；Under normal production conditions, the upstream coils are processed in sequence through the normalizing pickling section, continuous rolling section and annealing coating section to obtain the target product;
事故状态或检修工况时，至少其中一组产线断开机构投入使用，将所述连续生产机组分解为两个或三个独立子机组，至少部分独立子机组继续生产。In an accident state or maintenance condition, at least one set of production line disconnection mechanisms is put into use to decompose the continuous production unit into two or three independent sub-units, and at least some of the independent sub-units continue production.
对于上述的事故状态或检修工况，在其中一个实施例中，所述常化酸洗段出现故障停车或需要检修时，连轧段入口侧的备用分切剪(常化酸洗出口剪11或连轧入口剪15)将带钢切断，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机16处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机16处，连轧备用焊机16将对应带尾和对应带头焊接后，连轧段与退火涂层段继续进行连续生产。该过生产程中，机组以硅钢常化酸洗卷为原料，生产得到硅钢最终成品。For the above-mentioned accident state or maintenance condition, in one embodiment, when the normalized pickling section stops due to a fault or needs maintenance, the spare slitting shear (normalized pickling outlet shear 11 or continuous rolling entrance shear 15) on the inlet side of the continuous rolling section cuts the strip steel, and the front strip steel runs at the tail-swinging speed to the continuous rolling standby welder 16 on the inlet side of the continuous rolling section, and the standby uncoiler on the inlet side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welder 16, and after the continuous rolling standby welder 16 welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to produce continuously. In this production process, the unit uses silicon steel normalized pickling coils as raw materials to produce the final silicon steel product.
至此，常化酸洗段从连续生产系统上断开，即可开始检修或故障处理；检修或故障处理完毕后，将常化酸洗段出口的带钢向前穿带到连轧段入口的等待位等待，待连轧段入口侧的备用开卷机上正在运行的钢卷生产完后，与连轧段的带尾在连轧备用焊机16上连接，恢复整个系统的连续生产状态。At this point, the normalizing pickling section is disconnected from the continuous production system, and maintenance or troubleshooting can begin; after the maintenance or troubleshooting is completed, the strip at the outlet of the normalizing pickling section is forwarded to the waiting position at the entrance of the continuous rolling section and waits until the steel coil running on the spare uncoiler on the entrance side of the continuous rolling section is completed. The strip is connected to the tail of the strip of the continuous rolling section on the continuous rolling standby welding machine 16 to restore the continuous production state of the entire system.
对于上述的事故状态或检修工况，在其中一个实施例中，所述连轧段出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪(即常化酸洗出口剪11)将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机(即常化酸洗备用卷取机12)进行卷取，常化酸洗段开始独立连续生产；其中，可选地，D1在5m左右。退火涂层段入口侧的备用分切剪(连轧出口剪19或退火涂层入 口剪23)将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机24处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该退火涂层备用焊机24处，退火涂层备用焊机24将对应带尾和对应带头焊接后，退火涂层段开始独立连续生产。该过生产程中，机组以硅钢热轧卷和硅钢冷硬卷为原料，生产得到硅钢常化酸洗卷和硅钢最终成品。其中硅钢常化酸洗卷可以留着本生产系统备用，或供车间其它轧机生产使用，或作为常化酸洗中间产品外售。For the above-mentioned accident state or maintenance condition, in one of the embodiments, when the continuous rolling section stops due to a fault or needs maintenance, the spare slitting shear (i.e., the normalized pickling outlet shear 11) on the outlet side of the normalized pickling section cuts the strip, and the tail of the front strip continues to move forward a distance D1 to leave the normalized pickling section, and the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the normalized pickling spare coiler 12) on the outlet side of the normalized pickling section for coiling, and the normalized pickling section starts independent continuous production; wherein, optionally, D1 is about 5m. The spare slitting shear (continuous rolling outlet shear 19 or annealing coating inlet) on the inlet side of the annealing coating section The mouth shear 23) cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welding machine 24 at the entrance side of the annealing coating section. The standby uncoiler at the entrance side of the annealing coating section uncoils the standby steel coil and passes the strip head to the annealing coating standby welding machine 24. After the annealing coating standby welding machine 24 welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production. In this production process, the unit uses silicon steel hot-rolled coils and silicon steel cold-hardened coils as raw materials to produce silicon steel normalized pickling coils and silicon steel final products. Among them, the silicon steel normalized pickling coils can be kept in this production system for backup, or used for production by other rolling mills in the workshop, or sold as normalized pickling intermediate products.
至此，连轧段从连续生产系统上断开，即可开始检修或故障处理；检修或故障处理完毕后，待常化酸洗备用卷取机12上正在卷取的钢卷卷取完毕，即可将常化酸洗段出口的带钢向前穿带到连轧备用焊机16上与连轧段的带钢连接。同时，待退火涂层段入口侧的备用开卷机上正在生产的钢卷生产完毕，将连轧段出口的带钢与退火涂层段入口的带钢在退火涂层备用焊机24处连接，恢复整个系统的连续生产状态。At this point, the continuous rolling section is disconnected from the continuous production system, and maintenance or fault handling can be started; after the maintenance or fault handling is completed, the steel coil being wound on the normal pickling standby coiler 12 is wound up, and the strip at the outlet of the normal pickling section is forwarded to the continuous rolling standby welder 16 to be connected with the strip at the continuous rolling section. At the same time, after the steel coil being produced on the standby unwinder on the inlet side of the annealing coating section is finished, the strip at the outlet of the continuous rolling section is connected with the strip at the inlet of the annealing coating section at the annealing coating standby welder 24 to restore the continuous production state of the entire system.
对于上述的事故状态或检修工况，在其中一个实施例中，所述退火涂层段出现故障停车或需要检修时，连轧段出口侧的备用分切剪(即连轧出口剪19)将带钢切断，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机(即连轧备用卷取机20)进行卷取，常化酸洗段和连轧段继续进行连续生产。其中，可选地，D2在5m左右。该过生产程中，机组以硅钢热轧卷为原料，生产得到硅钢冷硬卷。硅钢冷硬卷可以留着本生产系统备用，或供车间其它退火涂层机组使用或作为冷硬卷中间产品外售。For the above-mentioned accident state or maintenance condition, in one embodiment, when the annealing coating section fails and stops or needs maintenance, the spare slitting shear (i.e., the continuous rolling exit shear 19) on the exit side of the continuous rolling section cuts the strip, and the tail of the front strip continues to move forward a distance D2 to leave the continuous rolling section, and the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the continuous rolling spare coiler 20) on the exit side of the continuous rolling section for coiling, and the normalizing pickling section and the continuous rolling section continue to carry out continuous production. Optionally, D2 is about 5m. In this production process, the unit uses silicon steel hot-rolled coils as raw materials to produce silicon steel cold-hardened coils. Silicon steel cold-hardened coils can be kept in this production system for standby, or used by other annealing coating units in the workshop, or sold as cold-hardened coil intermediate products.
至此，退火涂层段从连续生产系统上断开，即可开始检修或故障处理；检修或故障处理完毕后，待连轧备用卷取机20上正在卷取的钢卷卷取完毕，将连 轧段出口的带钢与退火涂层段入口的带钢在退火涂层备用焊机24处连接，恢复整个系统的连续生产状态。At this point, the annealing coating section is disconnected from the continuous production system, and maintenance or troubleshooting can begin; after the maintenance or troubleshooting is completed, the steel coil being coiled on the standby coiler 20 of the continuous rolling mill is completed, and the continuous rolling mill is connected to the standby coiler 20. The strip steel at the rolling section outlet is connected to the strip steel at the annealing coating section inlet at the annealing coating standby welder 24 to restore the continuous production state of the entire system.
对于上述的事故状态或检修工况，在其中一个实施例中，所述常化酸洗段和所述连轧段均出现故障停车或需要检修时，退火涂层段入口侧的备用分切剪(连轧出口剪19或退火涂层入口剪23)将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机24处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该退火涂层备用焊机24处，退火涂层备用焊机24将对应带尾和对应带头焊接后，退火涂层段开始独立连续生产。该过生产程中，机组以硅钢冷硬卷为原料，生产得到硅钢最终成品。For the above-mentioned accident state or maintenance condition, in one embodiment, when the normalized pickling section and the continuous rolling section both fail to stop or need maintenance, the spare slitting shear (continuous rolling exit shear 19 or annealing coating entrance shear 23) on the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welder 24 on the entrance side of the annealing coating section, and the standby unwinder on the entrance side of the annealing coating section unwinds the standby steel coil and passes the strip head to the annealing coating standby welder 24, and after the annealing coating standby welder 24 welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production. In this production process, the unit uses silicon steel cold hard coil as raw material to produce the final silicon steel product.
对于上述的事故状态或检修工况，在其中一个实施例中，所述连轧段和所述退火涂层段均出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪(即常化酸洗出口剪11)将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机(即常化酸洗备用卷取机12)进行卷取，常化酸洗段开始独立连续生产。该过生产程中，机组以硅钢热轧卷为原料，生产得到硅钢常化酸洗卷；硅钢常化酸洗卷可以留着本生产系统备用，或供车间其它轧机生产或作为常化酸洗中间产品外售。For the above-mentioned accident state or maintenance condition, in one embodiment, when both the continuous rolling section and the annealing coating section fail to stop or need maintenance, the spare slitting shear (i.e., the normalized pickling outlet shear 11) at the outlet side of the normalized pickling section cuts the strip, and the tail of the front strip continues to move forward a distance D1 to leave the normalized pickling section, and the head of the rear strip moves forward at the threading speed to the spare coiler (i.e., the normalized pickling spare coiler 12) at the outlet side of the normalized pickling section for coiling, and the normalized pickling section starts independent continuous production. In this production process, the unit uses silicon steel hot-rolled coils as raw materials to produce silicon steel normalized pickling coils; silicon steel normalized pickling coils can be kept in this production system for standby, or used for production by other rolling mills in the workshop, or sold as normalized pickling intermediate products.
对于上述的事故状态或检修工况，在其中一个实施例中，所述常化酸洗段和所述退火涂层段均出现故障停车或需要检修时，连轧段入口侧的备用分切剪(常化酸洗出口剪11或连轧入口剪15)和出口侧的备用分切剪(即连轧出口剪19)分别将带钢切断，其中，在连轧段入口侧，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机16处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机16处，连轧备用焊机16将对应带尾和对应带 头焊接；与此同时，在连轧段出口侧，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机(即连轧备用卷取机20)进行卷取，连轧段开始独立连续生产。该过生产程中，机组以硅钢常化酸洗卷为原料，生产得到硅钢冷硬卷；硅钢冷硬卷可以留着本生产系统备用，或供车间其它退火涂层机组使用，或作为冷硬卷中间产品外售。For the above-mentioned accident state or maintenance condition, in one embodiment, when both the normalized pickling section and the annealing coating section fail to stop or need maintenance, the spare slitting shears (normalized pickling outlet shears 11 or continuous rolling inlet shears 15) on the inlet side of the continuous rolling section and the spare slitting shears (i.e., continuous rolling outlet shears 19) on the outlet side cut the strip steel respectively, wherein, on the inlet side of the continuous rolling section, the front strip steel runs at the tail swinging speed to the continuous rolling standby welding machine 16 on the inlet side of the continuous rolling section, the standby uncoiler on the inlet side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine 16, and the continuous rolling standby welding machine 16 welds the corresponding strip tail and the corresponding strip At the same time, at the exit of the continuous rolling section, the tail of the leading strip continues to move forward for a distance D2 to leave the continuous rolling section, and the head of the trailing strip moves forward at the threading speed to the standby coiler (i.e., the standby coiler 20 for continuous rolling) at the exit of the continuous rolling section for coiling, and the continuous rolling section begins independent continuous production. In this production process, the unit uses silicon steel normalized pickled coils as raw materials to produce silicon steel chilled coils; silicon steel chilled coils can be kept in this production system for standby, or used by other annealing and coating units in the workshop, or sold as intermediate products of chilled coils.
如上所示，备用开卷机上装载有备用钢卷，该备用钢卷应能直接满足下一工艺段的生产要求。其中，连轧段入口侧的备用开卷机上的备用钢卷为常化酸洗后的硅钢卷；退火涂层段入口侧的备用开卷机上的备用钢卷为轧制产品规定厚度的硅钢冷硬卷。As shown above, the standby uncoiler is loaded with standby steel coils, which should be able to directly meet the production requirements of the next process section. Among them, the standby steel coils on the standby uncoiler at the entrance of the continuous rolling section are silicon steel coils after normalizing and pickling; the standby steel coils on the standby uncoiler at the entrance of the annealing and coating section are silicon steel chilled coils of the specified thickness of the rolled products.
另外，优选地，经设定时间后，若连续生产机组仍保持正常生产状况，则按照上述系统断开方法，将备用钢卷投入到连续生产系统上生产，并补充新的备用钢卷，以保证备用钢卷的质量。In addition, preferably, after the set time, if the continuous production unit still maintains normal production conditions, the spare steel coils are put into production on the continuous production system according to the above-mentioned system disconnection method, and new spare steel coils are added to ensure the quality of the spare steel coils.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

  1. 一种无取向硅钢全连续生产系统，其特征在于：包括常化酸洗段、连轧段和退火涂层段，所述常化酸洗段、所述连轧段及所述退火涂层段沿带钢运行方向依次衔接布置组成连续生产机组，所述常化酸洗段与所述连轧段之间以及所述连轧段与所述退火涂层段之间均设有产线断开机构。A fully continuous production system for non-oriented silicon steel, characterized in that it comprises a normalizing pickling section, a continuous rolling section and an annealing coating section, wherein the normalizing pickling section, the continuous rolling section and the annealing coating section are arranged in sequence along the running direction of the strip to form a continuous production unit, and a production line disconnection mechanism is provided between the normalizing pickling section and the continuous rolling section, as well as between the continuous rolling section and the annealing coating section.
  2. 如权利要求1所述的无取向硅钢全连续生产系统，其特征在于：所述产线断开机构包括备用分切剪、备用卷取装置、备用开卷装置和备用焊机，所述备用卷取装置与相邻的上一工艺段的带钢出口衔接，所述备用开卷装置、所述备用焊机以及相邻的下一工艺段的带钢入口依次衔接，所述备用分切剪布置于相邻上一工艺段的出口和/或相邻下一工艺段的入口。The fully continuous production system for non-oriented silicon steel as described in claim 1 is characterized in that: the production line disconnection mechanism includes a spare slitting shear, a spare coiling device, a spare uncoiling device and a spare welding machine, the spare coiling device is connected with the strip steel outlet of the adjacent previous process section, the spare uncoiling device, the spare welding machine and the strip steel inlet of the adjacent next process section are connected in sequence, and the spare slitting shear is arranged at the outlet of the adjacent previous process section and/or the entrance of the adjacent next process section.
  3. 如权利要求1所述的无取向硅钢全连续生产系统，其特征在于：所述常化酸洗段配置有常化酸洗入口活套和常化酸洗出口活套；和/或，所述退火涂层段配置有退火涂层入口活套和退火涂层出口活套。The fully continuous production system for non-oriented silicon steel as described in claim 1 is characterized in that: the normalizing pickling section is equipped with a normalizing pickling inlet looper and a normalizing pickling outlet looper; and/or the annealing coating section is equipped with an annealing coating inlet looper and an annealing coating outlet looper.
  4. 如权利要求1所述的无取向硅钢全连续生产系统，其特征在于：所述连轧段配置有连轧入口活套。The fully continuous production system for non-oriented silicon steel as described in claim 1 is characterized in that the continuous rolling section is equipped with a continuous rolling entrance looper.
  5. 一种无取向硅钢全连续生产方法，其特征在于，基于权利要求1至4中任一项所述的无取向硅钢全连续生产系统实施；A method for fully continuous production of non-oriented silicon steel, characterized in that it is implemented based on the fully continuous production system for non-oriented silicon steel according to any one of claims 1 to 4;
    所述方法包括：The method comprises:
    正常生产状况下，上游来卷依次经所述常化酸洗段、连轧段和退火涂层段处理，得到目标产品；Under normal production conditions, the upstream coils are processed in sequence through the normalizing pickling section, continuous rolling section and annealing coating section to obtain the target product;
    事故状态或检修工况时，至少其中一组产线断开机构投入使用，将所述连续生产机组分解为两个或三个独立子机组，至少部分独立子机组继续生产。In an accident state or maintenance condition, at least one set of production line disconnection mechanisms is put into use to decompose the continuous production unit into two or three independent sub-units, and at least some of the independent sub-units continue production.
  6. 如权利要求5所述的方法，其特征在于，所述方法包括：The method according to claim 5, characterized in that the method comprises:
    所述常化酸洗段出现故障停车或需要检修时，连轧段入口侧的备用分切剪 将带钢切断，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机处，连轧备用焊机将对应带尾和对应带头焊接后，连轧段与退火涂层段继续进行连续生产。When the normalizing pickling section stops due to a fault or needs maintenance, the spare slitting shear at the entrance of the continuous rolling section The strip is cut, and the front strip runs at the tail-swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section. The standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine. After the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to carry out continuous production.
  7. 如权利要求5所述的方法，其特征在于，所述方法包括：The method according to claim 5, characterized in that the method comprises:
    所述连轧段出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机进行卷取，常化酸洗段开始独立连续生产；When the continuous rolling section stops due to a fault or needs to be repaired, the spare slitting shear at the outlet side of the normal pickling section cuts the strip steel, the tail of the front strip steel continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip steel moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
    退火涂层段入口侧的备用分切剪将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该退火涂层备用焊机处，退火涂层备用焊机将对应带尾和对应带头焊接后，退火涂层段开始独立连续生产。The standby slitting shear on the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating standby welding machine on the entrance side of the annealing coating section. The standby uncoiler on the entrance side of the annealing coating section uncoils the standby steel coil and passes the strip head to the annealing coating standby welding machine. After the annealing coating standby welding machine welds the corresponding strip tail and the corresponding strip head, the annealing coating section starts independent continuous production.
  8. 如权利要求5所述的方法，其特征在于，所述方法包括The method according to claim 5, characterized in that the method comprises
    所述退火涂层段出现故障停车或需要检修时，连轧段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机进行卷取，常化酸洗段和连轧段继续进行连续生产。When the annealing coating section fails and stops or needs maintenance, the spare slitting shear on the outlet side of the continuous rolling section cuts the strip, the tail of the front strip continues to run forward a distance D2 to leave the continuous rolling section, and the head of the rear strip runs forward at the threading speed to the spare coiler on the outlet side of the continuous rolling section for coiling, and the normalizing pickling section and the continuous rolling section continue to carry out continuous production.
  9. 如权利要求5所述的方法，其特征在于，所述方法包括：The method according to claim 5, characterized in that the method comprises:
    所述常化酸洗段和所述连轧段均出现故障停车或需要检修时，退火涂层段入口侧的备用分切剪将带钢切断，前行带钢以甩尾速度运行至退火涂层段入口侧的退火涂层备用焊机处，退火涂层段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该退火涂层备用焊机处，退火涂层备用焊机将对应带尾和对应带 头焊接后，退火涂层段开始独立连续生产；When both the normalizing pickling section and the continuous rolling section fail to stop or need to be repaired, the spare slitting shear at the entrance side of the annealing coating section cuts the strip steel, and the front strip steel runs at the tail swinging speed to the annealing coating spare welding machine at the entrance side of the annealing coating section. The spare uncoiler at the entrance side of the annealing coating section uncoils the spare steel coil and passes the strip head to the annealing coating spare welding machine. The annealing coating spare welding machine uncoils the corresponding strip tail and the corresponding strip. After the head welding, the annealing coating section starts independent continuous production;
    所述连轧段和所述退火涂层段均出现故障停车或需要检修时，常化酸洗段出口侧的备用分切剪将带钢切断，前行带钢的带尾继续向前运行距离D1以离开常化酸洗段，后行带钢的带头以穿带速度向前运行至常化酸洗段出口侧的备用卷取机进行卷取，常化酸洗段开始独立连续生产；When both the continuous rolling section and the annealing and coating section fail to stop or need to be repaired, the spare slitting shear at the outlet side of the normal pickling section cuts the strip, the tail of the front strip continues to move forward by a distance D1 to leave the normal pickling section, and the head of the rear strip moves forward at the threading speed to the spare coiler at the outlet side of the normal pickling section for coiling, and the normal pickling section starts independent continuous production;
    所述常化酸洗段和所述退火涂层段均出现故障停车或需要检修时，连轧段入口侧和出口侧的备用分切剪分别将带钢切断，其中，在连轧段入口侧，前行带钢以甩尾速度运行至连轧段入口侧的连轧备用焊机处，连轧段入口侧的备用开卷机将备用钢卷开卷并使带头穿带至该连轧备用焊机处，连轧备用焊机将对应带尾和对应带头焊接；与此同时，在连轧段出口侧，前行带钢的带尾继续向前运行距离D2以离开连轧段，后行带钢的带头以穿带速度向前运行至连轧段出口侧的备用卷取机进行卷取，连轧段开始独立连续生产。When both the normalizing pickling section and the annealing coating section fail to stop or need to be repaired, the spare slitting shears on the entrance and exit sides of the continuous rolling section cut the strip steel respectively, wherein, on the entrance side of the continuous rolling section, the front strip steel runs at the tail swinging speed to the continuous rolling standby welding machine on the entrance side of the continuous rolling section, the standby uncoiler on the entrance side of the continuous rolling section uncoils the standby steel coil and passes the strip head to the continuous rolling standby welding machine, and the continuous rolling standby welding machine welds the corresponding strip tail and the corresponding strip head; meanwhile, on the exit side of the continuous rolling section, the strip tail of the front strip steel continues to run forward a distance D2 to leave the continuous rolling section, the strip head of the rear strip steel runs forward at the strip passing speed to the standby coiler on the exit side of the continuous rolling section for coiling, and the continuous rolling section starts independent continuous production.
  10. 如权利要求5所述的方法，其特征在于，所述方法包括：The method according to claim 5, characterized in that the method comprises:
    连轧段入口侧的备用开卷机和/或退火涂层段入口侧的备用开卷机上装载有备用钢卷，所述备用钢卷已开卷穿带至等待位，以便于事故状态下能够立即投入使用。 The spare uncoiler at the entrance side of the continuous rolling section and/or the spare uncoiler at the entrance side of the annealing and coating section is loaded with spare steel coils, which have been uncoiled and threaded to the waiting position so that they can be put into use immediately in an accident state.
PCT/CN2023/086470 2022-10-28 2023-04-06 Non-oriented silicon steel full-continuous production system and method WO2024087517A1 (en)

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JPH01293917A (en) * 1988-05-19 1989-11-27 Hitachi Ltd Working equipment for metallic strip
JP2965970B1 (en) * 1998-07-21 1999-10-18 川崎重工業株式会社 Continuous processing line and continuous processing method for steel sheet
JP2000063959A (en) * 1998-08-24 2000-02-29 Nkk Corp Producing equipment of steel strip excellent in producing efficiency, provided with continuous annealing equipment and electro-galvanizing equipment
CN107962074A (en) * 2017-12-04 2018-04-27 中冶南方工程技术有限公司 A kind of stainless steel cold-rolled plate continuous process system and method
CN115634929A (en) * 2022-10-28 2023-01-24 中冶南方工程技术有限公司 Full-continuous production system and method for non-oriented silicon steel
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JP2000063959A (en) * 1998-08-24 2000-02-29 Nkk Corp Producing equipment of steel strip excellent in producing efficiency, provided with continuous annealing equipment and electro-galvanizing equipment
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