Multi-layer-arranged multifunctional silicon steel continuous heat treatment assembly line

Abstract

The invention relates to a multi-layer-arranged multifunctional silicon steel continuous heat treatment production line, which adopts a multi-layer-arranged production line design, realizes compactness and three-dimensional of an oriented silicon steel continuous heat treatment production line through symmetrically arranged unit systems and CB process section trolley furnaces, saves space and improves production efficiency. The stacking arrangement of the three-dimensional space layout enables the whole production line to be more compact, the transmission distance of materials among different working procedures is reduced, so that the energy consumption and the production cost are reduced, the multi-layer arrangement mode enables connection of different treatment process lines to be more reasonable, conditions are created for an automatic logistics system, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of material processing, and in particular to a multifunctional silicon steel continuous heat treatment production line with a multi-layer arrangement. Background Art

[0002] In modern industrial production, oriented silicon steel, as an important electrical steel material, is widely used in electrical equipment such as transformers and motors due to its excellent electromagnetic properties. With the development of industrial technology, the demand for oriented silicon steel is growing, which has prompted the continuous optimization and upgrading of its production process.

[0003] Continuous heat treatment of oriented silicon steel is a key step in the production process, which directly affects the magnetic properties and physical properties of the material. This process includes cold rolling, intermediate annealing, coating with magnesium oxide, high temperature annealing and coating with insulating coating. The purpose of continuous heat treatment is to eliminate the stress inside the material, improve its magnetic properties, and ensure the uniformity and adhesion of the coating. By precisely controlling the temperature, atmosphere and time parameters during the heat treatment process, the comprehensive properties of oriented silicon steel can be significantly improved, such as reducing iron loss and increasing magnetic induction intensity.

[0004] However, the conventional continuous heat treatment of oriented silicon steel generally adopts a planar production line layout, which has some obvious defects. First, the planar production line occupies a large area, which is a major challenge for modern industry with increasingly tight land resources. Secondly, the planar layout leads to low production efficiency, because the handling and processing of materials requires more time and energy consumption during long-distance transmission. The planar layout may also lead to inconsistency in product quality, because the differences in atmosphere and temperature uniformity in different areas may lead to differences in the magnetic properties and surface quality of steel coils in different areas.

[0005] Therefore, improving the existing planar production line layout has become an urgent problem to be solved in the industry. Summary of the invention

[0006] Based on the above description, the present invention provides a multifunctional silicon steel continuous heat treatment production line with a multi-layer arrangement to solve many technical problems caused by the planar production line layout in the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: A multi-layered continuous heat treatment production line for grain-oriented silicon steel, characterized in that it comprises two symmetrically arranged unit systems and a CB process section trolley furnace located between the two unit systems; The unit system includes an annealing coating unit and a thermal flattening coating unit, and the annealing coating unit and the thermal flattening coating unit are arranged in a stacked manner according to a three-dimensional spatial layout; The annealing and coating unit degreases, anneals, applies MgO coating and dries the surface of the oriented silicon steel after secondary cold rolling. The CB process section trolley furnace is used to perform hood annealing on the oriented silicon steel processed by the annealing and coating unit. The hot flattening coating unit is used to pickle, apply an insulating layer, dry, sinter and hot flatten the oriented silicon steel after hood annealing to finally form a finished steel coil.

[0008] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement provided by the present application adopts a multi-layer arrangement of the production line design, and realizes the compactness and three-dimensionality of the oriented silicon steel continuous heat treatment production line through the symmetrically arranged unit system and the CB process section trolley furnace, saving space and improving production efficiency. The superimposed arrangement of the three-dimensional space layout makes the entire production line more compact, reduces the transmission distance of materials between different processes, thereby reducing energy consumption and production costs. The multi-layer arrangement makes the connection of different processing lines more reasonable, creates conditions for the automated logistics system, and improves production efficiency and product quality.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the annealing coating unit is provided on the frame in sequence according to the process sequence, including the first unwinder, welding section, first inlet finishing section, degreasing section, first electric heating soaking section, protective gas circulation spray cooling section, plate surface cleaning section, first outlet finishing section, first coating section, coating drying section, magnesium oxide coating section and first coiler; the frame has four layers from bottom to top; The unwinding position of the first unwinding machine and the welding section are located on the second layer, the degreasing section is located on the second layer, the electric heating and soaking section, the protective gas circulation blowing cooling section and the plate surface cleaning section are located on the third layer, the first outlet finishing section is located on the first layer, the first coating section, the coating drying section and the magnesium oxide coating section are located on the second layer; the winding position of the first coiler is located on the second layer, and the conveying directions of the oriented silicon steel strip between different layers are opposite.

[0011] Furthermore, the welding section is provided with an industrial frequency welding machine for welding oriented silicon steel strips.

[0012] Furthermore, a hot air drying device is provided at the rear end of the degreasing section and the rear end of the board surface cleaning section.

[0013] Furthermore, the thermal flat coating unit includes a second unwinder, a brushing section, a second inlet finishing section, a pickling section, a squeeze roller section, a second coating section, a layer curing section, a radiation tube heating section, an electric heating soaking section, a radiation tube cooling section, a quick cooling section, an air cooling section, a second outlet finishing section and a second coiler which are sequentially arranged on the frame in accordance with the process sequence; The unwinding position of the second unwinder and the brushing section are located on the second layer, the second entrance finishing section is located on the third layer, the pickling section, squeezing roller section, second coating section, layer curing section, radiation tube heating section, second electric heating soaking section, radiation tube cooling section, quick cooling section, and air cooling section are located on the fourth layer in sequence, the second exit finishing section is located on the third layer, and the winding position of the second winder is located on the second layer.

[0014] Furthermore, the second inlet finishing section and the second outlet finishing section are respectively located at two ends of the annealing coating unit.

[0015] Furthermore, the annealing coating unit and the heat smoothing coating unit are provided with tensioning roller assemblies and deviation correcting roller assemblies at both ends of each layer and between different processes.

[0016] Furthermore, a beam track is provided at the upper end of the frame, and a steel coil hoisting vehicle is provided on the beam track.

[0017] Furthermore, the first electric heating soaking section and the second electric heating soaking section both adopt electric soaking furnaces, and use resistance belts to soak the oriented silicon steel strip, with the maximum designed furnace temperature being 600°C.

[0018] Furthermore, the protective gas circulation blowing cooling section is used to cool the steel strip to below 200°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a top plan layout structure of a multi-layered continuous heat treatment production line for oriented silicon steel provided in an embodiment of the present invention; Figure 2 A schematic diagram of a three-dimensional layered layout of a unit system in a multi-layered continuous heat treatment line for oriented silicon steel provided by an embodiment of the present invention; Figure 3 A schematic diagram of a multi-layer layout of a segmented process for a unit system in a multi-layer continuous heat treatment line for oriented silicon steel provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0022] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90° or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0023] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0024] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0025] like Figure 1-3As shown, the present application provides a multi-layered continuous heat treatment production line for oriented silicon steel, comprising two symmetrically arranged unit systems 10 and a CB process section trolley furnace 20 located between the two unit systems; the unit system 10 comprises an annealing coating unit 100 and a hot flattening coating unit 200, and the annealing coating unit 100 and the hot flattening coating unit 200 are arranged in a stacked manner according to a three-dimensional spatial layout; the annealing coating unit 100 performs surface degreasing, annealing, MgO coating and drying on the oriented silicon steel after secondary cold rolling, the CB process section trolley furnace 20 is used for hood annealing of the oriented silicon steel treated by the annealing coating unit, and the hot flattening coating unit 200 is used for pickling, coating an insulating layer and drying, sintering, and hot flattening the oriented silicon steel after the hood annealing, and finally forming a finished steel coil.

[0026] The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement provided by the present application adopts a multi-layer arrangement production line design, and realizes the compactness and three-dimensionality of the oriented silicon steel continuous heat treatment production line through the symmetrically arranged unit system 10 and the CB process section trolley furnace 20, saving space and improving production efficiency. The superimposed arrangement of the three-dimensional space layout makes the entire production line more compact, reduces the transmission distance of materials between different processes, thereby reducing energy consumption and production costs. The multi-layer arrangement makes the connection of different processing lines more reasonable, creates conditions for the automated logistics system, and improves production efficiency and product quality.

[0027] Among them, the annealing coating unit 100 is arranged on the frame in sequence according to the process sequence, including the first unwinder 101, the welding section 102, the first inlet sorting section 103, the degreasing section 104, the first electric heating soaking section 105, the protective gas circulation blowing cooling section 106, the plate surface cleaning section 107, the first outlet sorting section 108, the first coating section 109, the coating drying section 110, the magnesium oxide coating section 111 and the first coiler 112; the frame has four layers from bottom to top.

[0028] The unwinding position of the first unwinder 101 and the welding section 102 are located on the second layer, the degreasing section 104 is located on the second layer, the electric heating and soaking section 105, the protective gas circulation blowing cooling section 106 and the plate surface cleaning section 107 are located on the third layer, the first outlet finishing section 108 is located on the first layer, the first coating section 109, the coating drying section 110 and the magnesium oxide coating section 111 are located on the second layer; the winding position of the first coiler 112 is located on the second layer, and the conveying directions of the oriented silicon steel strips between different layers are opposite.

[0029] The layered annealing coating unit 100 makes the connection between the various processes smoother through a reasonable process layout, reduces the material handling time between different processes, and improves production efficiency. At the same time, the reverse conveying design between different layers helps to balance the load of the production line, reduce equipment wear, and extend the service life of the equipment.

[0030] The welding section 103 is provided with a power frequency welding machine for welding the oriented silicon steel strip. The rear end of the degreasing section 104 and the rear end of the plate surface cleaning section 107 are provided with a hot air drying device.

[0031] The use of power frequency welding machine improves the stability and efficiency of welding and ensures the welding quality. The setting of hot air drying device quickly dries the material after degreasing and cleaning, reduces the influence of moisture on subsequent processes and improves the adhesion and quality of the coating.

[0032] The hot leveling coating unit 200 includes a second unwinder 201, a brushing section 202, a second inlet finishing section 203, a pickling section 204, a squeeze roller section 205, a second coating section 206, a layer curing section 207, a radiation tube heating section 208, an electric heating soaking section 209, a radiation tube cooling section 210, a fast cooling section 211, an air cooling section 212, a second outlet finishing section 213 and a second coiler 214; the unwinding position of the second unwinder 201 and the brushing section 202 are located on the second layer, the second entrance finishing section 203 is located on the third layer, the pickling section 204, the squeezing roller section 205, the second coating section 206, the layer curing section 207, the radiant tube heating section 208, the second electric heating equalizing section 209, the radiant tube cooling section 210, the quick cooling section 211, and the air cooling section 212 are located on the fourth layer in sequence, the second outlet finishing section 213 is located on the third layer, and the winding position of the second winder 214 is located on the second layer.

[0033] The layered design of the thermal leveling coating unit 200 enables key processes such as pickling and coating curing to be carried out continuously on the same production line, reducing the transfer of materials between different production lines and improving production efficiency and product quality. At the same time, this design also helps to achieve more precise temperature control to ensure the uniformity and quality of the coating.

[0034] Among them, the second inlet sorting section 203 and the second outlet sorting section 213 are respectively located at the two ends of the annealing coating unit 100. This layout can optimize the process of the production line, making the materials enter and exit the unit more smoothly, reducing the production bottleneck caused by unreasonable layout, and also helping to shorten the length of the entire production line, save space, and reduce construction costs.

[0035] In this embodiment, the annealing coating unit 100 and the heat smoothing coating unit 200 are provided with tensioning roller assemblies and correcting roller assemblies at both ends of each layer and between different processes; the provision of the tensioning roller assembly and the correcting roller assembly helps to maintain the tension and position stability of the material on the production line, reduces the deviation and relaxation of the material, and improves the operating stability of the production line and the processing quality of the material.

[0036] Preferably, a beam track 303 is provided at the upper end of the frame 300 , and a steel coil hoisting vehicle 304 is provided on the beam track 303 .

[0037] The arrangement of the crossbeam rail 303 and the steel coil hoisting vehicle 304 optimizes the steel coil handling process and improves the operation efficiency and safety. By reducing direct manual intervention, the labor intensity and operation risks are reduced, while the automation level of the production line is enhanced, ensuring the stability and reliability of the continuous production process.

[0038] Among them, the first electric heating soaking section 104 and the second electric heating soaking section 209 both use electric soaking furnaces, and use resistance belts to soak the oriented silicon steel strip, and the maximum design furnace temperature is 600°C. The use of electric soaking furnaces provides more uniform and precise temperature control, which helps to improve the heat treatment quality of materials. At the same time, the high design furnace temperature of the electric soaking furnace can meet the heat treatment requirements of different materials, improving the adaptability and flexibility of the production line.

[0039] The protective gas circulation spray cooling section 105 is used to cool the strip steel to below 200°C; the design of the protective gas circulation spray cooling section 105 enables the strip steel to be quickly cooled in a protective atmosphere, reducing the risk of oxidation and corrosion, while ensuring the cooling uniformity of the material, providing a good foundation for subsequent coating and leveling processes.

[0040] It is understandable that each segment in the embodiments of the present application represents a processing process, and the process itself is relatively conventional prior art, and the equipment and devices used in the process are also conventional commercially available equipment and devices, so no detailed description is given.

[0041] In summary, the above embodiments effectively save space and improve production efficiency through multi-layer layout and compact assembly line design. The three-dimensional layout reduces the material transmission distance, reduces energy consumption and costs. At the same time, precise temperature control and rapid cooling under protective atmosphere improve coating uniformity and product quality. The automated lifting and handling system reduces manual operation and improves safety and the automation level of the production line.

[0042] 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

1. A multi-layered continuous heat treatment line for oriented silicon steel, characterized in that: It comprises two symmetrically arranged unit systems and a CB process section trolley furnace located between the two unit systems; The unit system includes an annealing coating unit and a thermal flattening coating unit, and the annealing coating unit and the thermal flattening coating unit are arranged in a stacked manner according to a three-dimensional spatial layout; The annealing and coating unit degreases, anneals, applies MgO coating and dries the surface of the oriented silicon steel after secondary cold rolling. The CB process section trolley furnace is used to perform hood annealing on the oriented silicon steel processed by the annealing and coating unit. The hot flattening coating unit is used to pickle, apply an insulating layer, dry, sinter and hot flatten the oriented silicon steel after hood annealing to finally form a finished steel coil.

2. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 1 is characterized in that: The annealing coating unit is provided on the frame in the order of process, including the first unwinder, welding section, first inlet finishing section, degreasing section, first electric heating soaking section, protective gas circulation spray cooling section, plate surface cleaning section, first outlet finishing section, first coating section, coating drying section, magnesium oxide coating section and first coiler; the frame has four layers from bottom to top; The unwinding position of the first unwinding machine and the welding section are located on the second layer, the degreasing section is located on the second layer, the electric heating and soaking section, the protective gas circulation blowing cooling section and the plate surface cleaning section are located on the third layer, the first outlet finishing section is located on the first layer, the first coating section, the coating drying section and the magnesium oxide coating section are located on the second layer; the winding position of the first coiler is located on the second layer, and the conveying directions of the oriented silicon steel strip between different layers are opposite.

3. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 2 is characterized in that: The welding section is provided with an industrial frequency welding machine for welding oriented silicon steel strips.

4. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 2 is characterized in that: The rear end of the degreasing section and the rear end of the board surface cleaning section are provided with hot air drying devices.

5. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 2 is characterized in that: The thermal flat coating unit comprises a second unwinder, a brushing section, a second inlet finishing section, a pickling section, a squeeze roller section, a second coating section, a layer curing section, a radiation tube heating section, an electric heating soaking section, a radiation tube cooling section, a quick cooling section, an air cooling section, a second outlet finishing section and a second coiler which are sequentially arranged on the frame in accordance with the process sequence; The unwinding position of the second unwinder and the brushing section are located on the second layer, the second entrance finishing section is located on the third layer, the pickling section, squeezing roller section, second coating section, layer curing section, radiation tube heating section, second electric heating soaking section, radiation tube cooling section, quick cooling section, and air cooling section are located on the fourth layer in sequence, the second exit finishing section is located on the third layer, and the winding position of the second winder is located on the second layer.

6. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 5 is characterized in that: The second inlet finishing section and the second outlet finishing section are respectively located at two ends of the annealing coating unit.

7. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 5 is characterized in that: The annealing coating unit and the heat leveling coating unit are provided with tensioning roller assemblies and deviation-correcting roller assemblies at both ends of each layer and between different processes.

8. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 5 is characterized in that: A crossbeam track is arranged at the upper end of the frame, and a steel coil hoisting vehicle is arranged on the crossbeam track.

9. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 5 is characterized in that: The first electric heating soaking section and the second electric heating soaking section both adopt electric soaking furnaces, and use resistance belts to soak the oriented silicon steel strips, and the maximum designed furnace temperature is 600°C.

10. The multifunctional silicon steel continuous heat treatment production line with multi-layer arrangement according to claim 5, characterized in that: The protective gas circulation blowing cooling section is used to cool the strip steel to below 200°C.

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