CN218925665U - Combined production unit for silicon steel rolling annealing coating - Google Patents
Combined production unit for silicon steel rolling annealing coating Download PDFInfo
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- CN218925665U CN218925665U CN202222874830.XU CN202222874830U CN218925665U CN 218925665 U CN218925665 U CN 218925665U CN 202222874830 U CN202222874830 U CN 202222874830U CN 218925665 U CN218925665 U CN 218925665U
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Abstract
The utility model relates to a silicon steel rolling annealing coating combined production unit, which comprises a unit uncoiling device, a continuous rolling section, an annealing coating section and a unit coiling machine which are sequentially connected and arranged along the running direction of strip steel to form a continuous production unit; a first standby slitting shear, a first standby coiling machine, a first standby uncoiling device and a first standby welding machine are arranged between the continuous rolling section and the annealing coating section, the first standby coiling machine is connected with a strip steel outlet of the continuous rolling section, the first standby uncoiling device, the first standby welding machine and a strip steel inlet of the annealing coating section are sequentially connected, and the first standby slitting shear is arranged at the outlet of the continuous rolling section and/or the inlet of the annealing coating section. The continuous rolling section and the annealing coating section are arranged to form a continuous production unit, so that the investment cost and the running cost are reduced; the continuous production unit can be divided into two independent sub-units, and the convenience of unit overhaul and maintenance and the flexibility of the production process are high.
Description
Technical Field
The utility model belongs to the technical field of silicon steel production, and particularly relates to a silicon steel rolling annealing coating combined production unit.
Background
Silicon steel is basic functional material for national economy 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 process is long and the process is complex.
The general production process flow of the non-oriented silicon steel is as follows: desulphurizing molten iron, smelting, vacuum treatment, continuous casting, electromagnetic stirring, hot continuous rolling, (normalizing) +pickling, cold rolling, annealing of finished products and coating. The production and research of each sub-process have been developed for many years, and the technology is mature and stable. From hot rolled coils to finished coils, almost all production enterprises worldwide at present carry out the following procedures:
medium and high grade products: normalizing pickling line, single-frame reversible rolling mill, continuous annealing coating line, finishing packaging line, or normalizing line, pickling continuous rolling line, continuous annealing coating line, finishing packaging line;
medium and low grade products: pickling continuous rolling unit, continuous annealing coating unit and finishing packaging unit.
According to the existing scheme, at least 4 units are configured for the medium-high grade products from the hot rolled coil to the finished coil, at least 3 units are configured for the medium-low grade products, and a middle warehouse for 3-4 days is configured between the units for buffering between the units; and the steel coil needs to be lifted and transported for at least 2 times between the front machine set and the rear machine set. Therefore, the existing production process of the unoriented silicon steel has the problems of longer flow, larger occupied area, higher production cost and the like.
Disclosure of Invention
The utility model relates to a silicon steel rolling annealing coating combined production unit which at least can solve part of defects in the prior art.
The utility model relates to a silicon steel rolling annealing coating combined production unit which comprises a unit uncoiling device, a continuous rolling section, an annealing coating section and a unit coiling machine, wherein the unit uncoiling device, the continuous rolling section, the annealing coating section and the unit coiling machine are sequentially connected and arranged along the strip steel running direction to form a continuous production unit; and a first standby slitting shear, a first standby coiling machine, a first standby uncoiling device and a first standby welding machine are further arranged between the continuous rolling section and the annealing coating section, the first standby coiling machine is connected with a strip steel outlet of the continuous rolling section, the first standby uncoiling device, the first standby welding machine and a strip steel inlet of the annealing coating section are sequentially connected, and the first standby slitting shear is arranged at the outlet of the continuous rolling section and/or the inlet of the annealing coating section.
As one of the implementation modes, the silicon steel rolling annealing coating combined production unit further comprises an acid pickling section, and the unit uncoiling device, the acid pickling section, the continuous rolling section, the annealing coating section and the unit coiling machine are sequentially connected and arranged along the strip steel running direction to form a continuous production unit.
As one of the implementation modes, a second standby slitting shear, a second standby coiling machine, a second standby uncoiling device and a second standby welding machine are arranged between the pickling section and the continuous rolling section, the second standby coiling machine is connected with the strip steel outlet of the pickling section, the second standby uncoiling device, the second standby welding machine and the strip steel inlet of the continuous rolling section are sequentially connected, and the second standby slitting shear is arranged at the outlet of the pickling section and/or the inlet of the continuous rolling section.
As one of the implementation modes, an acid washing outlet shear is arranged on the outlet side of the acid washing section, a continuous rolling inlet shear is arranged on the inlet side of the continuous rolling section, and the acid washing outlet shear and/or the continuous rolling inlet shear form the second standby slitting shear.
As one embodiment, the pickling section is provided with a pickling inlet loop and a pickling outlet loop.
As one embodiment, the second backup uncoiling device adopts a double uncoiler mode, and uncoiling channels of two backup uncoilers are connected with the second backup welding machine.
As one of the implementation modes, a continuous rolling outlet shear is arranged on the outlet side of the continuous rolling section, an annealing coating inlet shear is arranged on the inlet side of the annealing coating section, and the continuous rolling outlet shear and/or the annealing coating inlet shear form the first standby slitting shear.
As one embodiment, the first backup uncoiling device is in the form of a double uncoiler, and uncoiling channels of two backup uncoilers are connected with the first backup welding machine.
As one embodiment, the annealing coating section is configured with an annealing coating inlet loop and an annealing coating outlet loop; the continuous rolling section is provided with a continuous rolling inlet looper.
As one embodiment, the annealing coating section comprises an annealing furnace, a coating machine and a coating drying furnace which are sequentially connected in the running direction of the strip steel.
The utility model has at least the following beneficial effects: according to the silicon steel rolling annealing coating combined production unit provided by the utility model, the continuous rolling section and the annealing coating section are arranged to form the continuous production unit, so that continuous production of continuous rolling and annealing coating can be realized for the hot rolled coil, the labor cost is greatly reduced, the factory occupation is saved, the investment cost and the operation cost are reduced, the production period of products is shortened, and the product quality is improved. The first standby slitting shear, the first standby coiling machine, the first standby uncoiling device and the first standby welding machine are arranged between the continuous rolling section and the annealing coating section, so that the continuous production unit can be decomposed into two independent sub-units, the overhaul and maintenance convenience of the production unit can be improved, and the process flexibility of the production unit can be improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a silicon steel rolling annealing coating co-production unit (without an acid washing section) provided by an embodiment of the utility model;
fig. 2 is a schematic structural diagram of a silicon steel rolling annealing coating co-production unit (including an acid washing section) provided by the embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, the embodiment of the utility model provides a silicon steel rolling annealing coating combined production unit, which comprises a unit uncoiling device 1, a continuous rolling section 5, an annealing coating section and a unit coiling machine 19, wherein the unit uncoiling device 1, the continuous rolling section 5, the annealing coating section and the unit coiling machine 19 are sequentially connected and arranged along the running direction of strip steel to form a continuous production unit. A first standby slitting shear, a first standby coiling machine 7, a first standby uncoiling device 8 and a first standby welding machine 10 are further arranged between the continuous rolling section 5 and the annealing coating section, the first standby coiling machine 7 is connected with a strip steel outlet of the continuous rolling section 5, the first standby uncoiling device 8, the first standby welding machine 10 and a strip steel inlet of the annealing coating section are sequentially connected, and the first standby slitting shear is arranged at the outlet of the continuous rolling section 5 and/or the inlet of the annealing coating section.
Wherein, the unit uncoiling device 1 preferably adopts a double uncoiling device and comprises a first raw material uncoiling machine and a second raw material uncoiling machine; the unit uncoiling device 1 further comprises a unit welding machine 3, uncoiling channels of the two raw material uncoilers are connected with the unit welding machine 3, the tail of one raw material uncoiler and the head of the other raw material uncoiler are welded at the unit welding machine 3, and the unit welding machine 3 can adopt a laser welding machine or an argon arc welding machine and the like. Further, the machine set inlet scissors 2 are distributed on the uncoiling channels of the two raw material uncoilers, the parts with unqualified tape head and tape tail quality can be cut off, and the processed tape head and tape tail are welded at the machine set welding machine 3.
The continuous rolling section 5 includes a continuous rolling mill which is mainly used for continuously rolling a hot-rolled strip to a predetermined thickness, 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 mill can be in the form of three or more frames according to the specifications of raw materials and finished products, and each frame can be in the form of a 6-roller mill or an 18-roller mill, or different combinations of the two.
In one embodiment, the tandem rolling section 5 is provided with a tandem rolling inlet loop 4, so that the production rhythm of the previous and subsequent working procedures can be adjusted, the continuous operation of the unit is ensured, and the tandem rolling inlet loop 4 is in a full-sleeve state during normal production.
The annealing coating section is mainly used for recrystallization annealing of the strip steel after cold rolling and coating of an insulating coating, and preferably has the capability of processing the cold-rolled silicon steel thin strip with the thickness of 0.15-0.65 mm. Preferably, as shown in fig. 1 and 2, the annealing coating section comprises an annealing furnace 13, a coating machine 14 and a coating drying furnace 15 which are sequentially connected in the running direction of the strip steel; the annealing furnace 13 is used for annealing the strip steel, and the single-layer horizontal annealing furnace 13, the multi-layer reciprocating horizontal annealing furnace 13 or the vertical+multi-layer reciprocating horizontal+vertical annealing furnace 13 can be adopted in the form of the annealing furnace 13 according to different unit speeds; the heating section of the annealing furnace 13 can adopt various forms such as full gas heating type, longitudinal magnetic induction heating type, transverse magnetic induction heating type, gas heating type, induction heating type and the like. The annealed strip steel enters a coating machine 14 to be coated with an insulating coating; the strip steel surface is coated with an insulating coating, then enters a coating drying furnace 15 for drying moisture and curing the coating, and the coating drying furnace 15 can be in the form of a conventional gas drying furnace 15, an air cushion drying furnace 15 or an infrared drying furnace 15 according to the unit speed and the coating types.
Further, the annealing coating section further comprises a degreasing device 11, the degreasing device 11 is arranged at the upstream of the annealing furnace 13 and can clean emulsion or rolling oil on the surface of the strip steel, and the degreasing device 11 is cleaned in a combination mode of alkali liquor cleaning, ultrasonic cleaning, electrolytic cleaning and the like.
Further, an annealing coating outlet shear 18 is arranged between the coating drying furnace 15 and the unit coiler 19, and is mainly used for shearing a weld joint, sampling, separating coils and the like of the strip steel. The unit reel 19 may take the form of a double reel comprising a first product reel and a second product reel. A finished product trimming shear 17 can be further arranged for trimming the finished product, and the strip steel is sheared to a set product width specification; the finished trimming shears 17 can be disc shears or the like.
In one embodiment, as shown in fig. 1 and fig. 2, the annealing coating section is configured with an annealing coating inlet loop 12 and an annealing coating outlet loop 16, and during normal production, the annealing coating inlet loop 12 is in a full-loop state, so that the production rhythm of the previous and subsequent working procedures can be adjusted, and the continuous operation of the unit is ensured; the annealing coating outlet loop 16 is in a blank position state during normal production and is mainly used for storing strip steel when the annealing coating section changes channels due to operations such as welding line shearing and sampling, so as to ensure continuous operation of the unit.
The silicon steel rolling annealing coating combined production unit provided by the embodiment arranges the continuous rolling section 5 and the annealing coating section into a continuous production unit, so that continuous production of continuous rolling and annealing coating can be realized for the hot rolled coil, the labor cost is greatly reduced, the factory occupation is saved, the investment cost and the operation cost are reduced, the production period of the product is shortened, and the product quality is improved. The machine set can simultaneously meet the production of medium-high grade products and medium-low grade products. The first standby slitting shears, the first standby coiling machine 7, the first standby uncoiling device 8 and the first standby welding machine 10 are arranged between the continuous rolling section 5 and the annealing coating section, so that a continuous production unit can be divided into two independent sub-units, the maintenance convenience of the production unit can be improved, and the process flexibility of the production unit can be improved.
In one embodiment, the first standby uncoiling device 8 adopts a double uncoiler mode, so that continuous production can be realized when the annealing coating section becomes an independent sub-unit; specifically, the first standby uncoiling device 8 comprises a first standby uncoiler and a second standby uncoiler, and an uncoiling channel of the first standby uncoiler and an uncoiling channel of the second standby uncoiler are both connected with the first standby welding machine 10, and one uncoiling channel is preferably designed to be collinear with the continuous production unit.
It is further preferred that under normal production conditions, the backup uncoiler of the first backup uncoiler 8 is loaded with backup coils so as to be immediately put into use in an accident situation; when the standby steel coil is uncoiled and penetrated to a waiting position for waiting, the response speed of the disconnection of the production line can be further improved, and the production reliability is ensured.
Further preferably, as shown in fig. 1 and 2, a continuous rolling outlet shear 6 is arranged at the outlet side of the continuous rolling section 5, an annealing coating inlet shear 9 is arranged at the inlet side of the annealing coating section, and the continuous rolling outlet shear 6 and/or the annealing coating inlet shear 9 form the first standby slitting shear. By arranging the continuous rolling outlet shears 6 and the annealing coating inlet shears 9, the flexibility and reliability of unit production can be effectively improved, and specific application modes will be described in the following production methods.
Further preferably, as shown in fig. 2, the above-mentioned silicon steel rolling annealing coating combined production unit further comprises an acid washing section 21, and the unit uncoiling device 1, the acid washing section 21, the continuous rolling section 5, the annealing coating section and the unit coiling machine 19 are sequentially connected and arranged along the strip steel running direction to form a continuous production unit. The pickling section 21 comprises a pickling device; in one embodiment, the pickling device adopts an HCl pickling mode, 3-5 sections of pickling tanks are arranged, and the acid liquor concentration of the pickling tanks is gradually decreased along the running direction of the strip steel. Depending on the length of the pickling section 21, a correction device is preferably provided inside the pickling tank for correcting the deviation of the strip inside the pickling tank.
By configuring the acid washing section 21, the production unit can simultaneously meet the production of medium-high grade products and medium-low grade products.
Preferably, as shown in fig. 2, the pickling section 21 is provided with a pickling inlet loop 20 and a pickling outlet loop 22, and in normal production, the pickling inlet loop 20 is in a full-sleeve state, so that the production rhythm of the previous and subsequent procedures can be adjusted, the continuous operation of the unit is ensured, and the pickling outlet loop 22 is in an empty-sleeve state.
Further preferably, as shown in fig. 2, a second backup slitting shear, a second backup coiler 24, a second backup uncoiler 25 and a second backup welding machine 27 are arranged between the pickling section 21 and the continuous rolling section 5, the second backup coiler 24 is connected with the strip steel outlet of the pickling section 21, the second backup uncoiler 25, the second backup welding machine 27 and the strip steel inlet of the continuous rolling section 5 are sequentially connected, and the second backup slitting shear is arranged at the outlet of the pickling section 21 and/or the inlet of the continuous rolling section 5.
In one embodiment, the second standby uncoiling device 25 is in the form of a double uncoiler, so that continuous production can be realized when the annealing coating section becomes an independent sub-unit; the structure of the second standby unwinding device 25 can be referred to the structure of the first standby unwinding device 8, and will not be described herein.
It is further preferred that the backup uncoiler of the second backup uncoiler 25 is loaded with backup coils of steel under normal production conditions so as to be immediately put into use in an accident situation; when the standby steel coil is uncoiled and penetrated to a waiting position for waiting, the response speed of the disconnection of the production line can be further improved, and the production reliability is ensured.
Further preferably, as shown in fig. 2, the outlet side of the pickling section 21 is provided with a pickling outlet shear 23, the inlet side of the tandem rolling section 5 is provided with a tandem rolling inlet shear 26, and the pickling outlet shear 23 and/or the tandem rolling inlet shear 26 form the second spare slitting shear. By arranging the pickling outlet shears 23 and the tandem rolling inlet shears 26, the flexibility and reliability of unit production can be effectively improved, and the specific application mode will be described in the following production methods.
By arranging the second backup slitting shears, the second backup coiler 24, the second backup uncoiler 25 and the second backup welder 27 between the pickling section 21 and the tandem rolling section 5, the continuous production unit can be decomposed into two independent sub-units (pickling unit, tandem rolling-annealing coater 14 unit), and the maintenance convenience and process flexibility of the production unit can be further improved. The continuous production unit can be further divided into three sub-units by combining standby equipment between the pickling section 21 and the continuous rolling section 5, any equipment in the pickling section 21, the continuous rolling section 5 and the annealing coating section can be maintained when faults occur, and the operation reliability is high.
The pickling section 21 and the continuous rolling section 5 and the annealing coating section can be connected through a guide plate table to meet the normal continuous production requirement, but the process section connection mode is not limited, and for example, a roller type conveying device is also feasible.
The production method of the silicon steel rolling annealing coating combined production unit approximately comprises the following steps:
under normal production conditions, the upstream coiled material is sequentially processed by an acid washing section 21, a continuous rolling section 5 and an annealing coating section to obtain a target product; the upstream coil can be hot rolled or normalized;
when the annealing coating section fails and stops or needs to be overhauled, the strip steel is cut off by the continuous rolling outlet scissors 6, the tail of the forward strip steel continues to move forward by a distance D1 to leave the continuous rolling section 5, the head of the backward strip steel moves forward to the first standby coiling machine 7 at a threading speed for coiling, and the continuous rolling section 5 continues to perform continuous production. Wherein, optionally, D1 is about 5 m.
When the pickling section 21 is stopped due to a fault or overhauled, the second spare slitting shear (the pickling outlet shear 23 or the continuous rolling inlet shear 26) at the inlet side of the continuous rolling section 5 cuts off the strip steel, the forward strip steel runs to the second spare welding machine 27 at a tail throwing speed, the second spare uncoiling device 25 uncoils the spare steel coil and leads the strip head to pass to the second spare welding machine 27, and after the second spare welding machine 27 welds the corresponding strip tail and the corresponding strip head, the continuous rolling section 5 and the annealing coating section form an independent sub-unit to start continuous production.
When the continuous rolling section 5 is in fault stop or needs to be overhauled, the strip steel is cut off by the pickling outlet scissors 23, the tail of the forward strip steel continues to move forward by a distance D2 to leave the pickling section 21, the head of the backward strip steel moves forward to the second standby coiling machine 24 at a threading speed for coiling, and the pickling section 21 starts independent continuous production; wherein, optionally, D2 is around 5 m. The strip steel is cut off by a standby slitting shear (a continuous rolling outlet shear 6 or an annealing coating inlet shear 9) at the inlet side of the annealing coating section, the forward strip steel runs to a first standby welding machine 10 at a tail throwing speed, a standby steel coil is uncoiled by a first standby uncoiling device 8, a strip head is penetrated to the first standby welding machine 10, and after the corresponding strip tail and the corresponding strip head are welded by the first standby welding machine 10, the annealing coating section starts to independently and continuously produce.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A silicon steel rolling annealing coating joint production unit is characterized in that: the continuous production device comprises a unit uncoiling device, a continuous rolling section, an annealing coating section and a unit coiling machine, wherein the unit uncoiling device, the continuous rolling section, the annealing coating section and the unit coiling machine are sequentially connected and arranged along the strip steel running direction to form a continuous production unit; and a first standby slitting shear, a first standby coiling machine, a first standby uncoiling device and a first standby welding machine are further arranged between the continuous rolling section and the annealing coating section, the first standby coiling machine is connected with a strip steel outlet of the continuous rolling section, the first standby uncoiling device, the first standby welding machine and a strip steel inlet of the annealing coating section are sequentially connected, and the first standby slitting shear is arranged at the outlet of the continuous rolling section and/or the inlet of the annealing coating section.
2. The silicon steel rolling annealing coating combination production unit as set forth in claim 1, wherein: also comprises an acid washing section, a washing section and a washing section, the unit uncoiling device, the pickling section, the continuous rolling section, the annealing coating section and the unit coiling machine are sequentially connected and arranged along the strip steel running direction to form a continuous production unit.
3. The silicon steel rolling annealing coating combination production unit as set forth in claim 2, wherein: a second standby slitting shear, a second standby coiling machine, a second standby uncoiling device and a second standby welding machine are arranged between the pickling section and the continuous rolling section, the second standby coiling machine is connected with a strip steel outlet of the pickling section, the second standby uncoiling device, the second standby welding machine and a strip steel inlet of the continuous rolling section are sequentially connected, and the second standby slitting shear is arranged at an outlet of the pickling section and/or an inlet of the continuous rolling section.
4. A silicon steel rolling annealing coating co-production unit as set forth in claim 3, wherein: the pickling section outlet side is provided with a pickling outlet shear, the continuous rolling section inlet side is provided with a continuous rolling inlet shear, and the pickling outlet shear and/or the continuous rolling inlet shear form the second standby slitting shear.
5. The silicon steel rolling annealing coating combination production unit as set forth in claim 2, wherein: the pickling section is provided with a pickling inlet loop and a pickling outlet loop.
6. A silicon steel rolling annealing coating co-production unit as set forth in claim 3, wherein: the second standby uncoiling device adopts a double uncoiler mode, and uncoiling channels of two standby uncoilers are connected with the second standby welding machine.
7. The silicon steel rolling annealing coating combination production unit as set forth in claim 1, wherein: the outlet side of the continuous rolling section is provided with a continuous rolling outlet shear, the inlet side of the annealing coating section is provided with an annealing coating inlet shear, and the continuous rolling outlet shear and/or the annealing coating inlet shear form the first standby slitting shear.
8. The silicon steel rolling annealing coating combination production unit as set forth in claim 1, wherein: the first standby uncoiling device adopts a double uncoiler mode, and uncoiling channels of two standby uncoilers are connected with the first standby welding machine.
9. The silicon steel rolling annealing coating combination production unit as set forth in claim 1, wherein: the annealing coating section is provided with an annealing coating inlet loop and an annealing coating outlet loop; the continuous rolling section is provided with a continuous rolling inlet looper.
10. The silicon steel rolling annealing coating combination production unit as set forth in claim 1, wherein: the annealing coating section comprises an annealing furnace, a coating machine and a coating drying furnace which are sequentially connected and arranged along the running direction of the strip steel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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