An apparatus for refining edge grains of grain-oriented silicon steel and a system thereof

Abstract

The utility model discloses a device and system of fine orientation silicon steel edge grain, and the device of fine orientation silicon steel edge grain includes the pressure roller device between annealing furnace and coating roll, and the pressure roller device includes upper pressure roller and the lower supporting roller of opposite setting, and the upper pressure roller includes the pressure roller part of both sides and the connecting portion of connecting two pressure roller parts, and the width of pressure roller part is 15mm~25mm, and the pressure roller part is used for extruding the edge of strip steel, and the gap exists between connecting portion and strip steel, and the width of lower supporting roller is greater than or equal to the width of strip steel. The device of fine orientation silicon steel edge grain is provided by the utility model, and the effect of fine orientation silicon steel edge grain is realized through adding a special pressure roller, and due to grain refinement, the mechanical property of steel band edge changes, the actual quality is improved, and the material yield can be effectively improved after the reduction of strip steel edge defects.

Description

Technical Field

[0001] This utility model relates to the field of grain-oriented silicon steel production and manufacturing technology, and mainly relates to a device and system for refining the edge grains of grain-oriented silicon steel. Background Technology

[0002] Grain-oriented silicon steel is increasingly used due to its mature production process and low price. Currently, the thickness of grain-oriented silicon steel products is being continuously reduced to meet the magnetic requirements of corresponding products. However, as the thickness of the steel strip decreases, the mechanical properties of the steel strip edges are deteriorating. It is necessary to refine the grains at the edges of the steel strip to utilize the grain refinement strengthening effect of metallurgy and create conditions for stable production in downstream manufacturing processes.

[0003] After high-temperature annealing in a ring furnace, the grains of oriented silicon steel undergo abnormal growth, resulting in poor mechanical properties at the edges of the steel strip at room temperature. If the grain state at the edges of the steel plate can be selectively altered through certain methods to prevent grain growth, the mechanical properties of the steel plate edges can be improved, effectively avoiding difficulties in edge trimming and material waste during user operations. Utility Model Content

[0004] The main purpose of this invention is to provide a device and system for refining the edge grains of grain-oriented silicon steel, which is designed to extrude grain-oriented silicon steel from an annealing furnace to produce a grain refinement effect.

[0005] To achieve the above objectives, this utility model provides an apparatus for refining the edge grains of grain-oriented silicon steel. The apparatus includes a pressure roller device located between an annealing furnace and a coating roller. This pressure roller device comprises an upper pressure roller and a lower support roller disposed opposite to it. The upper pressure roller includes pressure roller sections on both sides and a connecting section connecting the two pressure roller sections. The width of the pressure roller section is 15mm to 25mm. The pressure roller section is used to extrude the edge of the strip steel. A gap exists between the connecting section and the strip steel. The width of the lower support roller is greater than or equal to the width of the strip steel.

[0006] Preferably, the pressure roller portion and the connecting portion are integrally formed.

[0007] Preferably, the height of the step formed by the pressure roller and the connecting part is 5mm to 10mm.

[0008] Preferably, the width of the lower support roller is the same as the width of the upper pressure roller.

[0009] Preferably, the diameter of the lower roller is 30mm to 50mm.

[0010] Preferably, both the connecting part and the pressure roller part are cylindrical in shape, and their axes are aligned.

[0011] Preferably, the diameter of the pressure roller section is 30mm to 50mm.

[0012] Preferably, the width of the pressure roller portions on both sides of the upper pressure roller is the same.

[0013] Preferably, the lower support roller is a flat roller.

[0014] This utility model also proposes a system for refining the edge grains of grain-oriented silicon steel, including the above-mentioned device for refining the edge grains of grain-oriented silicon steel, and a pressing device that is matched with the upper pressure roller and the lower support roller of the device for refining the edge grains of grain-oriented silicon steel.

[0015] The device for refining the edge grains of grain-oriented silicon steel proposed in this invention has the following beneficial effects: 1. By using a pressure roller device, the grain size at the edge of the grain-oriented silicon steel can be refined. Due to the refinement of the grain size, the mechanical properties of the steel strip edge are changed, the quality of the finished product is improved, and the yield can be effectively increased after the reduction of edge defects. 2. The use of pressure roller devices does not change the original process and production flow, and has the advantages of being easy to implement and control in the process; 3. This device for refining the edge grains of grain-oriented silicon steel has the advantages of simple structure, stable and reliable operation, and easy implementation. Attached Figure Description

[0016] Figure 1 This is a side view of the device for refining the edge grains of oriented silicon steel according to the present invention. Figure 2 This is a schematic diagram of the main structure of the device for refining the edge grains of oriented silicon steel according to the present invention; Figure 3 A table showing the relationship between tensile force and elongation during edge sampling tensile tests of the strip steel is generated for Embodiment 1 of this utility model.

[0017] In the figure, 1-annealing furnace, 2-upper pressure roller, 21-pressure roller section, 22-connecting section, 3-lower support roller, 4-strip steel.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] This invention proposes a device for refining the edge grains of grain-oriented silicon steel.

[0022] Reference Figure 1 and Figure 2 An apparatus for refining the edge grains of grain-oriented silicon steel includes a pressure roller device located between an annealing furnace 1 and a coating roller. The pressure roller device includes an upper pressure roller 2 and a lower support roller 3 disposed opposite to it. The upper pressure roller 2 includes pressure roller sections 21 located on both sides and a connecting section 22 connecting the two pressure roller sections 21. The width of the pressure roller section 21 is 15mm~25mm. The pressure roller section 21 is used to squeeze the edge of the strip steel. There is a gap between the connecting section 22 and the strip steel. The width of the lower support roller 3 is greater than or equal to the width of the strip steel.

[0023] Furthermore, the pressure roller portion 21 and the connecting portion 22 are integrally formed. By integrally forming the pressure roller portion 21 and the connecting portion 22, the manufacturing process of the upper pressure roller 2 is simplified, and the installation of accessories is eliminated. At the same time, the structural strength of the upper pressure roller 2 is also improved.

[0024] Specifically, the height of the step formed between the pressure roller section 21 and the connecting section 22 is 5mm to 10mm. By setting this height, both excessively large and small heights will affect the pressure applied to the steel strip.

[0025] Furthermore, the width of the lower support roller 3 is the same as the width of the upper pressure roller 2. The diameter of the lower support roller 3 is 30mm~50mm.

[0026] Furthermore, both the connecting part 22 and the pressure roller part 21 are cylindrical structures, and their axes are aligned. The diameter of the pressure roller part 21 is 30mm to 50mm. The pressure roller parts 21 on both sides of the upper pressure roller 2 have the same width. The lower support roller 3 is a flat roller.

[0027] Comparative Example 1 Instead of using rollers for extrusion, the strip steel comes directly from the annealing furnace 1 and enters the coating rollers.

[0028] Example 1 In this embodiment, the strip size is 1050 mm. After adopting the device for refining the edge grains of the grain-oriented silicon steel, the size of the upper pressure roller 2 is 50 mm, and the size of the lower support roller 3 is 50 mm. The edge sampling tensile test results show that the tensile strength of the sample subjected to extrusion treatment is about 18 MPa higher than that of the conventional sample under the same tensile conditions.

[0029] A comparison of Example 1 and Comparative Example 1 shows that, based on the actual product quality, low-magnification grain evaluation of pickled steel, and tensile test data of the steel coils produced using this device for refining the edge grains of oriented silicon steel, the new design achieves the effect of refining the edge grains of oriented silicon steel by adding a special set of pressure rollers without changing the original process and production flow. Due to the grain refinement, the mechanical properties of the steel strip edge change, the actual product quality is improved, and the yield can be effectively increased after the reduction of edge defects.

[0030] The apparatus for refining the edge grains of grain-oriented silicon steel proposed in this embodiment has the following beneficial effects: 1. By using a pressure roller device, the grain size at the edge of the grain-oriented silicon steel can be refined. Due to the refinement of the grain size, the mechanical properties of the steel strip edge are changed, the quality of the finished product is improved, and the yield can be effectively increased after the reduction of edge defects. 2. The use of pressure roller devices does not change the original process and production flow, and has the advantages of being easy to implement and control in the process; 3. This device for refining the edge grains of grain-oriented silicon steel has the advantages of simple structure, stable and reliable operation, and easy implementation.

[0031] This invention also proposes a system for refining the edge grains of grain-oriented silicon steel.

[0032] In this preferred embodiment, a system for refining the edge grains of grain-oriented silicon steel includes the aforementioned device for refining the edge grains of grain-oriented silicon steel, and further includes a pressing device configured in conjunction with the upper pressure roller 2 and the lower support roller 3 of the device for refining the edge grains of grain-oriented silicon steel. The specific structure and beneficial effects of the device for refining the edge grains of grain-oriented silicon steel are as described in the above embodiment, and will not be repeated here.

[0033] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An apparatus for refining the edge grains of grain-oriented silicon steel, characterized in that, The device includes a pressure roller assembly located between an annealing furnace and a coating roller. The pressure roller assembly includes an upper pressure roller and a lower support roller disposed opposite to it. The upper pressure roller includes pressure roller sections located on both sides and a connecting section connecting the two pressure roller sections. The width of the pressure roller section is 15mm to 25mm. The pressure roller section is used to squeeze the edge of the strip. There is a gap between the connecting section and the strip. The width of the lower support roller is greater than or equal to the width of the strip.

2. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, The pressure roller and the connecting part are integrally formed.

3. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, The height of the step formed by the pressure roller and the connecting part is 5mm~10mm.

4. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, The width of the lower support roller is the same as the width of the upper pressure roller.

5. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, The diameter of the lower idler roller is 30mm~50mm.

6. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, Both the connecting part and the pressure roller part are cylindrical in shape, and their axes are aligned.

7. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 6, characterized in that, The diameter of the pressure roller section is 30mm~50mm.

8. The apparatus for refining edge grains of grain-oriented silicon steel as described in claim 1, characterized in that, The width of the pressure roller sections on both sides of the upper pressure roller is the same.

9. The apparatus for refining edge grains of grain-oriented silicon steel as described in any one of claims 1 to 8, characterized in that, The lower support roller is a flat roller.

10. A system for refining edge grains in grain-oriented silicon steel, characterized in that, The apparatus includes the device for refining the edge grains of grain-oriented silicon steel as described in any one of claims 1 to 9, and further includes a pressing device that is matched with the upper pressure roller and the lower support roller of the device for refining the edge grains of grain-oriented silicon steel.

Images