Annealing convection plate device with novel structure

Abstract

The utility model discloses a convection plate device for annealing with a novel structure, which belongs to the field of cold rolling annealing and comprises a convection plate main body, an inner ring groove is arranged on the outer wall of the convection plate main body, fan blades are arranged on the outer wall of the convection plate main body, and an extension block is arranged on the outer wall of each adjacent fan blade. Wherein grooves are formed in the outer walls of every two adjacent fan blades, the inner ring groove is located in the circle center of the convection plate body, the diameter of the inner ring groove is smaller than that of the convection plate body, the distances between the fan blades are the same, the fan blades are fixedly welded to the outer wall of the convection plate body, the number of the fan blades is sixteen, and the corners of the two ends of each fan blade are in a round corner shape. One end of each fan blade extends to the inner side of the inner ring groove, the length of each extension block is larger than that of each fan blade, and the extension blocks and the fan blades are fixedly welded with each other, so that the annealing convection plate can be partially cut and transformed, the product loss is reduced, and the yield and the production efficiency of cold-rolled products are improved.

Description

Technical Field

[0001] The utility model relates to the field of cold rolling annealing, and more specifically to a new type of convection plate device for structural annealing. Background Art

[0002] During the annealing process of the cold rolling hood annealing unit, vertical steel coil stacking is used. Depending on the specification width, the number of stacked coils varies from 3 to 5 coils, the furnace weight reaches more than 80 tons, and a single furnace uses 2 to 4 intermediate convection plates. As the number of annealing times increases, the edge of the convection plate is concave and deformed. When the annealing acid continuous rolling unit does not trim the product, the untrimmed product has a certain amount of over-width at the head and tail of the strip. During the annealing process, the convection plate squeezes the edge, and the edge is folded and wrapped, which affects the normal unwinding of the flattening process. Flattening requires the outer ring deformed part to be cut off at the preparation station. If it is not cut cleanly, it will cause the bottom line curling bulge or convex ridge defects; the deformed part of the core is stopped in advance when rolling to the tail of the strip to unload the small coil, resulting in a large amount of product loss.

[0003] Especially for thin products with annealing thickness below 0.6mm, the convection plate will be unable to unwind and tear after being squeezed, which will increase the manual processing time, affect the production efficiency of the unit and increase the production cost. Therefore, in view of this, the existing structure is studied and improved, and a new type of structural annealing convection plate device is provided, in order to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new type of structural annealing convection plate device, which can realize partial cutting and transformation of the annealing convection plate, reduce product loss, and improve the yield rate and production efficiency of cold-rolled products.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A new type of convection plate device for structural annealing includes a convection plate body, the outer wall of which is provided with an inner ring groove, the outer wall of which is provided with fan blades, wherein the outer wall of each adjacent fan blade is provided with an extension block, wherein the outer wall of each adjacent fan blade is provided with a groove.

[0009] Furthermore, the inner ring groove is located at the center of the convection plate body, and the diameter of the inner ring groove is smaller than the diameter of the convection plate body.

[0010] Furthermore, the distances between each of the fan blades are the same, and the fan blades are fixedly welded to the outer wall of the convection plate body.

[0011] Furthermore, the number of the fan blades is sixteen, the corners at both ends of the fan blades are rounded, and one end of the fan blade extends to the inner side of the inner ring groove.

[0012] Furthermore, the length of the extension block is greater than the length of the fan blade, and the extension block and the fan blade are fixedly welded to each other.

[0013] Furthermore, the groove is located at one end of the extension block, and the grooves are all located in the middle of the outer wall of the fan blade.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] This solution reduces annealing edge folding defects by milling the annealing convection plate body of the hood annealing unit.

[0017] It can reduce cutting loss in the leveling process, improve product yield, and reduce the time of manual processing of hemming and folding defects in the leveling process, improve production efficiency, and reduce the occurrence of edge bulges or convex ridges in the leveling process, avoiding repeated rework of the unit. After the convection plate body is deweighted, the annealing natural gas consumption is also reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of a structural plane top view of the utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of the fan blade structure of the utility model;

[0021] Figure 4 It is a schematic diagram of a side cross-sectional plane view of the fan blade structure of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Convection plate body; 2. Fan blades; 3. Extension block; 4. Groove; 5. Inner ring groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] See also Figure 1-4 A new type of convection plate device for structural annealing includes a convection plate body 1, an inner ring groove 5 is opened on the outer wall of the convection plate body 1, and blades 2 are arranged on the outer wall of each adjacent blade 2, wherein an extension block 3 is arranged on the outer wall of each adjacent blade 2, wherein a groove 4 is opened on the outer wall of each adjacent blade 2. By optimizing and transforming the intermediate convection plate body 1 for annealing of the cover annealing unit, annealing defects and product losses are reduced, thereby improving the completion rate and production efficiency of the leveling unit, and achieving the purpose of reducing costs and increasing efficiency.

[0027] See also Figure 1 , 2 The inner circle groove 5 is located at the center of the convection plate body 1, and the diameter of the inner circle groove 5 is smaller than the diameter of the convection plate body 1; the spacing between each fan blade 2 is the same, and the fan blade 2 is fixedly welded to the outer wall of the convection plate body 1; the number of fan blades 2 is sixteen, and the corners at both ends of the fan blade 2 are rounded, and one end of the fan blade 2 extends to the inner side of the inner circle groove 5.

[0028] See also Figure 1 , 2 , 3, 4, the length of the extension block 3 is greater than the length of the fan blade 2, and the extension block 3 and the fan blade 2 are fixedly welded to each other; the groove 4 is located at one end of the extension block 3, and the grooves 4 are all located in the middle position of the outer wall of the fan blade 2.

[0029] When using:

[0030] (1) The outer edge of the lower end surface of the 16 blades 2 of each convection plate body 1 is cut off 20 cm in the inner circle direction to reduce the contact area between the lower end surface of the convection plate body 1 and the outer circle of the steel coil, so as to avoid crushing of steel coils with a diameter greater than 1700 mm;

[0031] (2) Cut off 10 cm of the inner edge of the lower end surface of each convection plate body 1 of the 16 blades 2 in the direction of the outer edge. Reduce the contact area between the lower end surface of the convection plate body 1 and the inner core of the steel coil to avoid crushing within the range of the coil core end surface diameter < 800 mm;

[0032] (3) The contact portion between the cut-off convection plate body 1 and the end face of the steel coil is polished to prevent the end face of the steel coil from being scratched at the contact point.

[0033] (4) The remaining fan blades 2 on the convection plate body 1 after removal are welded and reinforced to prevent the fan blades 2 from falling off during hoisting.

[0034] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel convection plate device for structural annealing, comprising a convection plate body (1), characterized in that: The outer wall of the convection plate body (1) is provided with an inner ring groove (5), and the outer wall of the convection plate body (1) is provided with fan blades (2), wherein the outer wall of each adjacent fan blade (2) is provided with an extension block (3), and the outer wall of each adjacent fan blade (2) is provided with a groove (4).

2. A new type of convection plate device for structural annealing according to claim 1, characterized in that: The inner ring groove (5) is located at the center of the convection plate body (1), and the diameter of the inner ring groove (5) is smaller than the diameter of the convection plate body (1).

3. A new type of convection plate device for structural annealing according to claim 1, characterized in that: The distances between each of the fan blades (2) are the same, and the fan blades (2) are fixedly welded to the outer wall of the convection plate body (1).

4. A novel structural annealing convection plate device according to claim 1, characterized in that: The number of the fan blades (2) is sixteen, the corners at both ends of the fan blades (2) are rounded, and one end of the fan blade (2) extends to the inner side of the inner ring groove (5).

5. A new type of convection plate device for structural annealing according to claim 1, characterized in that: The length of the extension block (3) is greater than the length of the fan blade (2), and the extension block (3) and the fan blade (2) are fixedly welded to each other.

6. A new type of convection plate device for structural annealing according to claim 1, characterized in that: The groove (4) is located at one end of the extension block (3), and the groove (4) is located in the middle of the outer wall of the fan blade (2).

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