CN218746575U - Full-continuous production system for non-oriented silicon steel - Google Patents
Full-continuous production system for non-oriented silicon steel Download PDFInfo
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- CN218746575U CN218746575U CN202222891393.2U CN202222891393U CN218746575U CN 218746575 U CN218746575 U CN 218746575U CN 202222891393 U CN202222891393 U CN 202222891393U CN 218746575 U CN218746575 U CN 218746575U
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Abstract
The utility model relates to a full continuous production system of non-oriented silicon steel, including normalizing pickling section, tandem rolling section and annealing coating section, normalizing pickling section, tandem rolling section and annealing coating section link up in proper order along belted steel traffic direction and arrange to form continuous production unit, and normalizing pickling section and tandem rolling section between and between tandem rolling section and the annealing coating section all are equipped with and produce line break-off mechanism. The utility model can complete the production of the whole cold rolling process on a continuous production line, greatly reduce the investment cost and the operation cost, shorten the production period of products and improve the quality of the products; the production line disconnecting mechanism can divide the continuous production unit into two or three independent sub-units, so that the process flexibility of the production system can be improved, and the continuous production unit can be ensured to continue normal production in other process sections when part of the process sections are in an accident state or in a maintenance working condition, so that the operation reliability of the production system is improved.
Description
Technical Field
The utility model relates to a full continuous production system of non-oriented silicon steel.
Background
Silicon steel is a basic functional material for national economic construction, is an indispensable soft magnetic alloy in the fields of electric power, electric appliances, military industry and the like, is widely used for manufacturing motors, generators, transformers, rectifier cores and various power electronic components, and plays a key role in the aspects of generation, transmission and use of electric energy. The production flow is long and the process is complex.
The general production process flow of the non-oriented silicon steel comprises the following steps: molten iron desulphurization → smelting → vacuum treatment → continuous casting + electromagnetic stirring → hot continuous rolling → (normalizing) + pickling → cold rolling → product annealing + coating. The sub-processes are greatly developed through years of production and research, and the technology is mature and stable. From hot rolled coil to finished coil production, almost all the production enterprises around the world currently perform the following steps:
medium and high grade products: the method comprises the following steps of (1) normalizing the pickling line → a single-stand reversible rolling mill → a continuous annealing coating line → a finishing packaging line, or normalizing the pickling line → a pickling continuous rolling line → a continuous annealing coating line → a finishing packaging line;
and (3) medium and low grade products: acid pickling continuous rolling mill → continuous annealing coating mill → finishing packaging mill.
According to the existing scheme, from the production of hot rolling coils to finished product coils, at least 4 machine sets are configured for middle and high grade products, at least 3 machine sets are configured for middle and low grade products, and intermediate storehouses for 3-4 days are configured among the machine sets and used for buffering among the machine sets; between the front and the rear machine sets, the steel coil needs to be lifted at least 2 times. It can be seen that the existing production process of non-oriented silicon steel has the problems of longer flow, larger occupied area, higher production cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a full continuous production system of non-oriented silicon steel can solve prior art's partial defect at least.
The utility model relates to a full continuous production system of non-oriented silicon steel, including normalizing pickling section, continuous rolling section and annealing coating section, normalizing pickling section the continuous rolling section reaches annealing coating section links up in proper order along belted steel traffic direction and arranges the continuous production unit of constituteing, normalizing pickling section with between the continuous rolling section and the continuous rolling section with all be equipped with between the annealing coating section and produce line disconnect-mechanism.
As one embodiment, the production line disconnecting mechanism comprises a standby slitting shear, a standby coiling device, a standby uncoiling device and a standby welding machine, the standby coiling device is connected with the strip steel outlet of the adjacent previous process section, the standby uncoiling device, the standby welding machine and the strip steel inlet of the adjacent next process section are sequentially connected, and the standby slitting shear is arranged at the outlet of the adjacent previous process section and/or the inlet of the adjacent next process section.
As an embodiment, the normalized pickling section is configured with a normalized pickling inlet loop and a normalized pickling outlet loop; and/or the annealing coating section is provided with an annealing coating inlet loop and an annealing coating outlet loop.
As an embodiment, the continuous rolling section is provided with a continuous rolling inlet loop.
As one embodiment, a normalized pickling inlet shear is arranged at the inlet side of the normalized pickling section, and a normalized pickling outlet shear is arranged at the outlet side of the normalized pickling section; a tandem rolling inlet shear is arranged at the inlet side of the tandem rolling section, and a tandem rolling outlet shear is arranged at the outlet side of the tandem rolling section; wherein the normalized pickling outlet shear and/or the continuous rolling inlet shear form a standby slitting shear between the normalized pickling section and the continuous rolling section
As one embodiment, a tandem rolling inlet shear is arranged on the inlet side of a tandem rolling section, and a tandem rolling outlet shear is arranged on the outlet side of the tandem rolling section; an annealing coating inlet shear is arranged on the inlet side of the annealing coating section, and an annealing coating outlet shear is arranged on the outlet side of the annealing coating section; and the continuous rolling outlet shear and/or the annealing coating inlet shear form standby slitting shear between the continuous rolling section and the annealing coating section.
As one embodiment, the standby uncoiling device is in the form of a double uncoiler, and the uncoiling channels of the two standby uncoilers are connected with the standby welding machine.
As an embodiment, the unwinding lane of one of the standby unwinders is collinear with the continuous production unit.
As an embodiment, the spare uncoiler is loaded with a spare coil of steel.
As one embodiment, the normalizing pickling section is connected with the continuous rolling section through a guide plate table; the continuous rolling section is connected with the annealing coating section through a guide plate table.
The utility model discloses following beneficial effect has at least:
the utility model discloses it forms the continuous production unit to arrange normalizing pickling section, tandem rolling section and annealing coating section for the hot rolling is rolled up and can be accomplished the production of cold rolling full process on a continuous production line, greatly reduces the cost of labor, practices thrift the mill and takes up an area of, reduces investment cost and running cost, shortens product production cycle, improves product quality. The production line disconnecting mechanism can divide the continuous production unit into two or three independent sub-units, so that the process flexibility of the production system can be improved, and the continuous production unit can be ensured to continue normal production in other process sections when part of the process sections are in an accident state or in a maintenance working condition, so that the operation reliability of the production system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a non-oriented silicon steel full-continuous production system provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in FIG. 1, the embodiment of the utility model provides a non-oriented silicon steel full continuous production system, including normalizing pickling section, continuous rolling section and annealing coating section, normalizing pickling section the continuous rolling section reaches annealing coating section links up in proper order along belted steel traffic direction and arranges and constitute the continuous production unit.
The normalizing and pickling section is mainly used for normalizing and pickling the hot rolled silicon steel raw material, so that the hot rolled plate structure is recrystallized, precipitates are coarsened, and meanwhile, iron scales on the surface of the hot rolled plate are removed. Preferably, the normalized pickling section has the capability of processing 1.6mm to 3.5mm of hot rolled silicon steel raw materials.
In one embodiment, as shown in fig. 1, the normalizing pickling section comprises a unit uncoiler, a normalizing pickling inlet shear 3, a normalizing pickling welder 4, a normalizing furnace 7 and a pickling device 9; the unit uncoiling device adopts a double uncoiling device and comprises a first raw material uncoiler 1 and a second raw material uncoiler 2; the normalized pickling entry scissors 3 can shear off the unqualified part of the head and the tail of the strip; the treated strip head and the treated strip tail are welded at a normalized acid-washing welding machine 4, and the normalized acid-washing welding machine 4 can adopt a laser welding machine or an argon arc welding machine and the like.
Preferably, the normalizing furnace 7 adopts a preheating → heating → soaking → cooling treatment process, and the strip steel coming out of the normalizing furnace 7 is cooled to below 80 ℃. Further, a strip steel surface treatment device is arranged between the normalizing furnace 7 and the pickling device 9, for example, a shot blasting machine 8 can be adopted, normalized strip steel enters the shot blasting machine 8 for shot blasting treatment, more than 80% of iron scales can be removed by striking the surface of the strip steel with fine shot particles at a high speed, and the rest of the iron scales are loosened due to shot blasting so as to facilitate subsequent pickling.
In one embodiment, the pickling device 9 adopts an HCl pickling mode, 3-5 sections of pickling tanks are arranged, and the acid liquor concentration of the pickling tanks is gradually reduced along the running direction of the strip steel. According to the length of the pickling section, a deviation rectifying facility is preferably arranged inside the pickling tank and used for rectifying deviation of the strip steel inside the pickling tank.
In one embodiment, as shown in fig. 1, a raw material trimming shear 5 is further arranged between the normalizing acid-washing welding machine 4 and the normalizing furnace 7, so that trimming treatment can be performed on the welded strip steel, and the part with poor edge quality can be cut off, so as to improve the subsequent rolling effect. The raw material edge-cutting shears 5 can adopt disc shears and the like.
In one embodiment, the normalized pickling section is provided with a normalized pickling inlet loop 6 and a normalized pickling outlet loop 10, and during normal production, the normalized pickling inlet loop 6 is in a full loop state, so that the production rhythm of the front and rear processes can be adjusted, and the continuous operation of a unit is ensured; the normalized pickling outlet loop 10 is in an empty loop position state.
The continuous rolling section is mainly used for continuously rolling a hot rolled strip to a predetermined thickness, and for example, a hot rolled strip having a thickness of 1.6mm to 3.5mm can be continuously rolled to a thickness of 0.15mm to 0.65mm. The continuous rolling section includes a continuous rolling mill 18, and the continuous rolling mill 18 may be in the form of three or more stands, each of which may be in the form of a 6-roll mill or an 18-roll mill, or a different combination of the two, etc., depending on the specifications of the raw material and the finished product.
In one embodiment, the continuous rolling section is provided with a continuous rolling inlet loop 17, so that the production rhythm of the front and rear processes can be adjusted, the continuous operation of the unit is ensured, and the continuous rolling inlet loop 17 is in a full loop state during normal production.
The annealing coating section is mainly used for recrystallization annealing of the cold-rolled strip steel and coating of an insulating coating, and preferably, the annealing coating section is used for processing a 0.15-0.65 mm cold-rolled silicon steel strip. Preferably, the annealing coating section comprises an annealing furnace 27, a coating machine 28, a coating drying furnace 29 and a finished product coiling device; the annealing furnace 27 is used for annealing the strip steel, and the annealing furnace 27 can be a single-layer horizontal annealing furnace 27, a multi-layer reciprocating horizontal annealing furnace, or a vertical type + multi-layer reciprocating horizontal type + vertical annealing furnace 27 according to different unit speeds; the heating section of the annealing furnace 27 may be of various types, such as a full gas heating type, a longitudinal magnetic induction heating type and a transverse magnetic induction heating type, or a gas heating type and an induction heating type. The annealed strip steel enters a coating machine 28 to be coated with an insulating coating; the surface of the strip steel is coated with the insulating coating and then enters a coating drying furnace 29 to dry moisture and solidify the coating, and the coating drying furnace 29 can adopt a conventional gas drying furnace, an air cushion type drying furnace or an infrared drying furnace and other forms according to the speed of a machine set and the type of the coating; the finished product take-up device may take the form of a double take-up machine comprising a first finished product take-up 33 and a second finished product take-up 34; further preferably, an annealing coating outlet shear 32 is arranged between the coating drying furnace 29 and the finished product coiling device, and is mainly used for strip steel shearing welding seams, sampling, coil splitting and the like.
Further, the annealing coating section further comprises a degreasing device 25, the degreasing device 25 is arranged at the upstream of the annealing furnace 27 and can be used for cleaning emulsion or rolling oil on the surface of the strip steel, and the degreasing device 25 is cleaned in a combination of various modes such as alkali liquor cleaning, ultrasonic cleaning and electrolytic cleaning.
Further, 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 trimming shears 31 may be disc shears or the like.
In one embodiment, the annealing coating section is provided with an annealing coating inlet loop 26 and an annealing coating outlet loop 30, and during normal production, the annealing coating inlet loop 26 is in a full loop state, so that the production rhythm of the front and rear processes can be adjusted, and the continuous operation of the unit is ensured; the annealing coating outlet loop 30 is in an empty sleeve position state during normal production, and is mainly used for storing strip steel when channels are changed in an annealing coating section due to operations such as welding line shearing and sampling so as to ensure continuous operation of a unit.
The normalizing pickling section and the continuous rolling section can be connected through a guide plate table, and the continuous rolling section and the annealing coating section can also be connected through the guide plate table; but not limited to, the process section joining means, such as a roll conveyor, are also possible.
Further optimizing the non-oriented silicon steel full-continuous production system, as shown in fig. 1, production line disconnecting mechanisms are arranged between the normalizing pickling section and the continuous rolling section and between the continuous rolling section and the annealing coating section, so that the continuous production unit can be decomposed into two or three independent sub-units.
The non-oriented silicon steel full-continuous production system provided by the embodiment arranges the normalized pickling section, the continuous rolling section and the annealing coating section to form a continuous production unit, so that the production of a cold rolling whole process can be completed on a continuous production line by a hot rolled coil, the labor cost is greatly reduced, the occupied area of a factory is saved, the investment cost and the operation cost are reduced, the production period of a product is shortened, and the product quality is improved. The production line disconnecting mechanism can divide the continuous production unit into two or three independent sub-units, so that the process flexibility of the production system can be improved, and the continuous production unit can be ensured to continue normal production in other process sections when part of the process sections are in an accident state or in a maintenance working condition, so that the operation reliability of the production system is improved.
In one embodiment, as shown in fig. 1, the production line disconnecting mechanism comprises a spare slitting shear, a spare winding device, a spare unwinding device and a spare welding machine, wherein the spare winding device is connected with the strip steel outlet of the adjacent previous process section, the spare unwinding 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 inlet of the adjacent next process section.
Preferably, slitting shears are arranged at an inlet and an outlet of the normalized pickling section, the slitting shear at the inlet side of the normalized pickling section is normalized pickling inlet shears 3, and the slitting shear at the outlet side of the normalized pickling section is normalized pickling outlet shears 11; preferably, slitting shears are arranged at an inlet and an outlet of the continuous rolling section, the slitting shear at the inlet side of the continuous rolling section is a continuous rolling inlet shear 15, and the slitting shear at the outlet side of the continuous rolling section is a continuous rolling outlet shear 19; preferably, cutting shears are arranged at the inlet and the outlet of the annealing coating section, the cutting shear at the inlet side of the annealing coating section is annealing coating inlet shear 23, and the cutting shear at the outlet side of the annealing coating section is annealing coating outlet shear 32. Wherein, the normalized pickling outlet shear 11 and the tandem rolling inlet shear 15 can form a standby slitting shear between the normalized pickling section and the tandem rolling section; the tandem mill exit shears 19 and the annealed coating entry shears 23 may constitute spare slitting shears between the tandem mill section and the annealed coating section.
In one embodiment, the standby uncoiling device is in a double uncoiler form, so that the corresponding independent sub-unit can realize continuous production; specifically, the standby uncoiling device comprises a first standby uncoiler and a second standby uncoiler, an uncoiling channel of the first standby uncoiler and an uncoiling channel of the second standby uncoiler are both connected with the standby welding machine, and one uncoiling channel is preferably designed to be collinear with the continuous production unit.
Wherein, the standby coiler between the normalized pickling section and the continuous rolling section is defined as a normalized pickling standby coiler 12, the first standby uncoiler between the normalized pickling section and the continuous rolling section is a continuous rolling first standby uncoiler 13, and the second standby uncoiler is a continuous rolling second standby uncoiler 14; the decoiling channel of the continuous rolling first standby decoiler 13 and the decoiling channel of the continuous rolling second standby decoiler 14 are both provided with the continuous rolling inlet shears 15. Defining a standby coiling machine between the continuous rolling section and the annealing coating section as a continuous rolling standby coiling machine 20, a first standby uncoiling machine between the continuous rolling section and the annealing coating section as an annealing coating first standby uncoiling machine 21, and a second standby uncoiling machine as an annealing coating second standby uncoiling machine 22; the annealing coating inlet shears 23 are arranged on the uncoiling channel of the annealing coating first standby uncoiler 21 and the uncoiling channel of the annealing coating second standby uncoiler 22.
Under the normal production condition, the spare steel coil is loaded on the spare uncoiler so as to be immediately put into use in an accident state; when the standby steel coil is uncoiled and threaded to a waiting position for waiting, the response speed of the production line disconnecting mechanism can be further improved, and the production reliability is ensured.
The standby welding machine can weld the online strip steel and the standby steel coil to realize connection and continuous production, and connection between the steel coils on the two standby uncoilers. The standby welder is arranged between the standby unwinder and the next adjacent process section, where the standby position of the standby coil can be located. Wherein, the spare welder at the inlet side of the continuous rolling section is a spare welder 16 for continuous rolling, and the spare welder at the inlet side of the annealing coating is a spare welder 24 for annealing coating.
The embodiment of the utility model also provides a non-oriented silicon steel full-continuous production method, which is implemented based on the non-oriented silicon steel full-continuous production system;
the method comprises the following steps:
under the normal production condition, the upstream incoming coil is sequentially treated by the normalized pickling section, the continuous rolling section and the annealing coating section to obtain a target product;
and when the accident state or the maintenance working condition is met, at least one group of production line disconnecting mechanisms is put into use, the continuous production unit is decomposed into two or three independent sub-units, and at least part of the independent sub-units continue to produce.
For the above accident state or the maintenance condition, in one embodiment, when the normalized pickling section fails and stops or needs to be maintained, the standby slitting shear (the normalized pickling outlet shear 11 or the continuous rolling inlet shear 15) on the inlet side of the continuous rolling section cuts the strip steel, the forward strip steel runs to the standby continuous rolling welder 16 on the inlet side of the continuous rolling section at the tail-flicking speed, the standby uncoiler on the inlet side of the continuous rolling section uncoils the standby steel coil and leads the strip head to penetrate to the standby continuous rolling welder 16, and after the standby continuous rolling welder 16 welds the corresponding strip tail and the corresponding strip head, the continuous rolling section and the annealing coating section continue to be continuously produced. In the production process, the machine set takes the normalized silicon steel pickling coil as a raw material to produce and obtain the final silicon steel product.
At this moment, the normalized pickling section is disconnected from the continuous production system, and then the maintenance or fault treatment can be started; after the maintenance or fault treatment is finished, the strip steel at the outlet of the normalized pickling section is forwardly threaded to a waiting position at the inlet of the continuous rolling section for waiting, and after the steel coil running on the standby uncoiler at the inlet of the continuous rolling section is produced, the strip steel is connected with the strip tail of the continuous rolling section on a standby welding machine 16 for continuous rolling, so that the continuous production state of the whole system is recovered.
For the above accident state or the maintenance working condition, in one embodiment, when the continuous rolling section is stopped due to a fault or needs to be maintained, the standby slitting shear (i.e. the normalized pickling exit shear 11) at the outlet side of the normalized pickling section cuts off the strip steel, the strip tail of the strip steel which moves forward continues to move forward by a distance D1 to leave the normalized pickling section, the strip head of the strip steel which moves backward moves forward to the standby coiler (i.e. the normalized pickling standby coiler 12) at the outlet side of the normalized pickling section at the strip threading speed for coiling, and the normalized pickling section starts to produce independently and continuously; wherein optionally D1 is around 5 m. And (3) cutting off the strip steel by using a standby slitting shear (a tandem rolling outlet shear 19 or an annealing coating inlet shear 23) on the inlet side of the annealing coating section, running the forward strip steel to an annealing coating standby welding machine 24 on the inlet side of the annealing coating section at a tail-flicking speed, uncoiling a standby steel coil by using a standby uncoiling machine on the inlet side of the annealing coating section and threading a strip head to the annealing coating standby welding machine 24, and after welding the corresponding strip tail and the corresponding strip head by using the annealing coating standby welding machine 24, starting independent continuous production of the annealing coating section. In the production process, the machine set takes the hot rolled silicon steel coil and the cold and hard silicon steel coil as raw materials to produce and obtain the normalized acid-washed silicon steel coil and the final silicon steel product. The silicon steel normalized pickling coil can be reserved in the production system for standby use, or used for production of other rolling mills in a workshop, or sold as a normalized pickling intermediate product.
At this point, the continuous rolling section is disconnected from the continuous production system, and then the maintenance or fault treatment can be started; after the overhaul or fault treatment is finished, after the steel coil which is coiled on the normalized pickling standby coiling machine 12 is coiled, the strip steel at the outlet of the normalized pickling section can be forwards threaded to the continuous rolling standby welding machine 16 to be connected with the strip steel at the continuous rolling section. Meanwhile, after the steel coil which is being produced on the standby uncoiler at the inlet side of the coating section to be annealed is produced, the strip steel at the outlet of the continuous rolling section is connected with the strip steel at the inlet of the coating section to be annealed at the standby welding machine 24 for annealing coating, and the continuous production state of the whole system is recovered.
For the above accident condition or the maintenance condition, in one embodiment, when the annealing coating section is stopped in a fault or needs to be maintained, the spare slitting shear (i.e. the tandem rolling exit shear 19) at the outlet side of the tandem rolling section cuts off the strip steel, the strip tail of the strip steel in the forward row continues to move forward for a distance D2 to leave the tandem rolling section, the strip head of the strip steel in the backward row moves forward to the spare coiling machine (i.e. the tandem rolling spare coiling machine 20) at the outlet side of the tandem rolling section at the strip threading speed for coiling, and the normalized pickling section and the tandem rolling section continue to produce continuously. Wherein, optionally, D2 is around 5 m. In the production process, the machine set takes the hot rolled silicon steel coil as a raw material to produce and obtain the cold-hard silicon steel coil. The silicon steel cold-hard coil can be reserved in the production system for standby use, or used by other annealing coating units in a workshop or sold as a cold-hard coil intermediate product.
At this point, the annealing coating section is disconnected from the continuous production system, and then the maintenance or fault treatment can be started; after the maintenance or fault treatment is finished, after the steel coil which is being coiled on the continuous rolling standby coiling machine 20 is coiled, the strip steel at the outlet of the continuous rolling section is connected with the strip steel at the inlet of the annealing coating section at the annealing coating standby welding machine 24, and the continuous production state of the whole system is recovered.
For the above accident state or the maintenance working condition, in one embodiment, when the normalized pickling section and the continuous rolling section both have a fault and are stopped or need to be maintained, the standby slitting shear (the continuous rolling outlet shear 19 or the annealing coating inlet shear 23) on the inlet side of the annealing coating section cuts off the strip steel, the strip steel which moves ahead runs to the annealing coating standby welding machine 24 on the inlet side of the annealing coating section at the tail flicking speed, the standby uncoiler on the inlet side of the annealing coating section uncoils the standby steel coil and leads the strip head to penetrate to the annealing coating standby welding machine 24, and after the corresponding strip tail and the corresponding strip head are welded by the annealing coating standby welding machine 24, the annealing coating section starts to be independently and continuously produced. In the production process, the machine set takes the silicon steel cold-hard coil as a raw material to produce and obtain a final silicon steel product.
For the above accident state or the maintenance working condition, in one embodiment, when the continuous rolling section and the annealing coating section both have a fault and stop or need to be maintained, the standby slitting shear (i.e. the normalized pickling exit shear 11) on the outlet side of the normalized pickling section cuts off the strip steel, the strip tail of the strip steel which moves forward continues to move forward by a distance D1 to leave the normalized pickling section, the strip head of the strip steel which moves backward moves forward at the strip threading speed to the standby coiler (i.e. the normalized pickling standby coiler 12) on the outlet side of the normalized pickling section for coiling, and the normalized pickling section starts to produce independently and continuously. In the production process, the machine set takes the silicon steel hot rolled coil as a raw material to produce and obtain the silicon steel normalized acid-washed coil; the silicon steel normalized pickling coil can be reserved in the production system for standby use, or can be produced by other rolling mills in a workshop or can be sold as a normalized pickling intermediate product.
For the above accident state or the maintenance working condition, in one embodiment, when the normalized pickling section and the annealed coating section both have a fault and stop or need to be maintained, the standby slitting shear (normalized pickling outlet shear 11 or tandem rolling inlet shear 15) at the inlet side of the tandem rolling section and the standby slitting shear (i.e. tandem rolling outlet shear 19) at the outlet side of the tandem rolling section respectively cut off the strip steel, wherein, at the inlet side of the tandem rolling section, the forward strip steel runs to the tandem rolling standby welder 16 at the inlet side of the tandem rolling section at the tail-flicking speed, the standby uncoiler at the inlet side of the tandem rolling section uncoils the standby strip steel and leads the strip head to the tandem rolling standby welder 16, and the tandem rolling standby welder 16 welds the corresponding strip tail and the corresponding strip head; meanwhile, at the outlet side of the continuous rolling section, the strip tail of the forward strip steel continuously moves forwards for a distance D2 to leave the continuous rolling section, the strip head of the backward strip steel forwards moves to a standby coiling machine (namely, a standby coiling machine 20 for continuous rolling) at the outlet side of the continuous rolling section at a strip threading speed for coiling, and the continuous rolling section starts independent continuous production. In the production process, the machine set takes the normalized acid-washed coil of the silicon steel as a raw material to produce and obtain the cold-hard coil of the silicon steel; the silicon steel chilled coil can be reserved in the production system for standby use, or used by other annealing coating units in a workshop, or sold as an intermediate product of the chilled coil.
As indicated above, the spare uncoiler is loaded with a spare coil of steel which should be able to directly meet the production requirements of the next process stage. Wherein, the standby steel coil on the standby uncoiler at the inlet side of the continuous rolling section is a silicon steel coil after normalized acid cleaning; and the spare steel coil on the spare uncoiler at the inlet side of the annealing coating section is a silicon steel cold-hard coil with the specified thickness of the rolled product.
In addition, preferably, after a set time, if the continuous production unit still maintains a normal production condition, the spare steel coil is put into the continuous production system for production according to the system disconnection method, and a new spare steel coil is supplemented to ensure the quality of the spare steel coil.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, 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. A full continuous production system of non-oriented silicon steel is characterized in that: the strip steel continuous production line 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 sequentially connected and arranged along the running direction of strip steel to form a continuous production unit, and production line breaking mechanisms are arranged between the normalizing pickling section and the continuous rolling section and between the continuous rolling section and the annealing coating section.
2. The full continuous production system of non-oriented silicon steel of claim 1, wherein: produce line shutdown mechanism and include reserve slitting shear, reserve coiling mechanism, reserve unwinding unit and reserve welding machine, reserve coiling mechanism links up with the belted steel export of an adjacent last technology section, reserve unwinding unit reserve welding machine and the belted steel entry of an adjacent next technology section link up in proper order, reserve slitting shear arranges in the export of an adjacent last technology section and/or the entry of an adjacent next technology section.
3. The full continuous production system of non-oriented silicon steel of claim 1, wherein: the normalized pickling section is provided with a normalized pickling inlet loop and a normalized pickling outlet loop; and/or the annealing coating section is provided with an annealing coating inlet loop and an annealing coating outlet loop.
4. The full continuous production system of non-oriented silicon steel of claim 1, wherein: the continuous rolling section is provided with a continuous rolling inlet loop.
5. The full continuous production system of non-oriented silicon steel of claim 1, wherein: a normalized pickling inlet shear is arranged at the inlet side of the normalized pickling section, and a normalized pickling outlet shear is arranged at the outlet side of the normalized pickling section; a tandem rolling inlet shear is arranged at the inlet side of the tandem rolling section, and a tandem rolling outlet shear is arranged at the outlet side of the tandem rolling section; wherein the normalizing pickling outlet shear and/or the continuous rolling inlet shear form a standby slitting shear between the normalizing pickling section and the continuous rolling section.
6. The full continuous production system of non-oriented silicon steel of claim 1, wherein: a tandem rolling inlet shear is arranged at the inlet side of the tandem rolling section, and a tandem rolling outlet shear is arranged at the outlet side of the tandem rolling section; the inlet side of the annealing coating section is provided with annealing coating inlet shears, and the outlet side of the annealing coating section is provided with annealing coating outlet shears; and the continuous rolling outlet shear and/or the annealing coating inlet shear form standby slitting shear between the continuous rolling section and the annealing coating section.
7. The full continuous production system of non-oriented silicon steel of claim 2, wherein: the standby uncoiling device adopts a double uncoiler form, and uncoiling channels of two standby uncoilers are connected with the standby welding machine.
8. The full continuous production system of non-oriented silicon steel of claim 7, wherein: the uncoiling channel of one standby uncoiler is collinear with the continuous production unit.
9. The full continuous production system of non-oriented silicon steel of claim 7, wherein: the spare steel coil is loaded on the spare uncoiler.
10. The full continuous production system of non-oriented silicon steel of claim 1, wherein: the normalized pickling section is connected with the continuous rolling section through a guide plate table; the continuous rolling section is connected with the annealing coating section through a guide plate table.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222891393.2U CN218746575U (en) | 2022-10-28 | 2022-10-28 | Full-continuous production system for non-oriented silicon steel |
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| 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 |
| WO2024087517A1 (en) * | 2022-10-28 | 2024-05-02 | 中冶南方工程技术有限公司 | Non-oriented silicon steel full-continuous production system and method |
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