Device for improving center quality of casting blank by strengthening current outside continuous casting solidification tail end

Abstract

The utility model discloses a device for improving the center quality of a casting blank by strengthening current outside a continuous casting solidification tail end, which comprises a working table, a first direct current stirring roller is arranged above the working table, a second direct current stirring roller is arranged above the working table, and a shell is fixedly connected below the working table. The utility model relates to the technical field of ferrous metallurgy, in particular to a device for improving the center quality of a casting blank by strengthening current outside a continuous casting solidification tail end, which realizes that a plurality of groups of direct current stirring rollers are arranged to stir non-solidified molten steel in a continuous casting slab through the matching among a motor, a first bevel gear, a second bevel gear, a lead screw, a lead screw nut and a transverse plate; the problems that an existing device is only provided with a set of direct-current stirring rollers to stir molten steel which is not solidified in a continuous casting slab, the stirring time is short, the situation of non-uniformity possibly occurs, and the using effect of the existing device is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel metallurgy, in particular to a device for improving the center quality of a casting billet at the end of continuous casting solidification by externally strengthening current. Background Art

[0002] With the intensified competition in the steel industry, the market demand for steel is getting higher and higher. Since segregation, porosity and shrinkage are prone to occur during the continuous casting process of slabs, the quality of the slabs is seriously affected, making it difficult to improve the slab qualification rate. In order to improve the quality of slabs and meet market demand, electromagnetic stirring is generally used to improve the quality of steel.

[0003] The existing device is in use, and the continuous casting slab passes through two upper and lower DC stirring rollers, which stir the unsolidified molten steel inside the continuous casting slab to improve the quality of the continuous casting slab;

[0004] However, the existing device is only provided with a set of DC stirring rollers to stir the unsolidified molten steel inside the continuous casting slab, resulting in a relatively short stirring time and possibly uneven stirring, thereby reducing the use effect of the existing device. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a device for improving the center quality of the continuous casting slab by externally strengthening the current at the end of the continuous casting solidification. It solves the problem that the existing device only has a set of DC stirring rollers to stir the unsolidified molten steel inside the continuous casting slab, resulting in a relatively short stirring time and possible unevenness, thereby reducing the use effect of the existing device.

[0006] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a device for improving the center quality of the ingot by externally strengthening the current at the end of continuous casting solidification, comprising a workbench, a first DC stirring roller is arranged above the workbench, a second DC stirring roller is arranged above the workbench, a shell is fixedly connected to the bottom of the workbench, a multi-station mechanism is arranged inside the shell, and the multi-station mechanism comprises: a motor, fixedly connected to the outer wall of the shell; a first bevel gear, fixedly connected to the output shaft of the motor; a second bevel gear, meshingly connected to the outer wall of the first bevel gear; a screw, fixed Fixedly connected to the inner wall of the second bevel gear; the screw nut is fixedly connected to the outer wall of the screw, and is slidably engaged with the inner wall of the shell, and passes through the workbench and is movably connected to the workbench; the cross plate is fixedly connected to the top of the screw nut; the disassembly assembly is arranged on the outside of the workbench; wherein, the screw is driven by the motor to move the screw nut, drive the cross plate to move, and thus drive the second DC stirring roller to move, and the continuous casting slab is stirred by setting multiple groups of DC stirring rollers, and the multiple groups of DC stirring rollers are disassembled by the disassembly assembly.

[0007] Preferably, the disassembly assembly includes: a sleeve, which is arranged above the workbench; a keyway, which is opened on the inner wall of the sleeve; and a key block, which is fixedly connected to the outer walls of the first DC stirring roller and the second DC stirring roller, respectively, and is slidably engaged with the inner wall of the keyway; wherein, through the cooperation between the sleeve and the key block, multiple groups of DC stirring rollers can be disassembled and replaced.

[0008] Preferably, the first DC stirring roller and the second DC stirring roller are respectively fixedly connected to the inner wall of the sleeve by bolts.

[0009] Preferably, the outer wall of the sleeve is rotatably connected to a first support column and a second support column through bearings respectively, the first support column is fixedly connected to the inner wall of the workbench by screws, and the second support column is fixedly connected to the inner wall of the horizontal plate by screws.

[0010] Preferably, a support leg is fixedly connected to the bottom of the workbench, and a bottom plate is fixedly connected to the bottom of the support leg. Beneficial effects

[0011] The utility model provides a device for improving the center quality of a continuous casting slab by externally enhancing the current at the end of solidification. The device has the following beneficial effects: The device, through the coordination of a motor, a first bevel gear, a second bevel gear, a lead screw, a lead screw nut, and a cross plate, achieves the purpose of providing multiple sets of DC stirring rollers to stir the unsolidified molten steel within the continuous casting slab. This solves the problem that existing devices only provide one set of DC stirring rollers to stir the unsolidified molten steel within the continuous casting slab, resulting in a relatively short stirring time and the possibility of uneven stirring, thereby reducing the effectiveness of the existing devices.

[0012] Through the cooperation between the key block, keyway, sleeve and bolt, the damaged DC stirring roller can be quickly disassembled, which solves the problem that it is troublesome to disassemble the damaged DC stirring roller when the DC stirring roller is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the appearance;

[0015] Figure 3 for Figure 1 Schematic diagram of the structure of the middle workbench, the second DC stirring roller and the cross plate;

[0016] Figure 4 for Figure 1 Schematic diagram of the structure of the motor, lead screw and lead screw nut;

[0017] Figure 5 for Figure 3 Schematic diagram of the structure of the middle sleeve, the second DC stirring roller and the bolt.

[0018] In the figure: 1. workbench; 11. support leg; 12. bottom plate; 2. first DC stirring roller; 21. first support column; 3. second DC stirring roller; 31. first support column; 4. multi-station mechanism; 41. motor; 42. first bevel gear; 43. second bevel gear; 44. lead screw; 45. lead screw nut; 46. cross plate; 47. disassembly assembly; 471. key block; 472. keyway; 473. sleeve; 4731. bolt; 5. housing. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The existing device is only equipped with a set of DC stirring rollers to stir the unsolidified molten steel inside the continuous casting slab, resulting in a relatively short stirring time and possible unevenness, thereby reducing the use effect of the existing device.

[0021] In view of this, the utility model provides a device for improving the center quality of the continuous casting slab by externally strengthening the current at the end of the continuous casting solidification. Through the cooperation between the motor, the first bevel gear, the second bevel gear, the lead screw, the lead screw nut and the cross plate, multiple groups of DC stirring rollers are set to stir the unsolidified molten steel inside the continuous casting slab, which solves the problem that the existing device only has one group of DC stirring rollers to stir the unsolidified molten steel inside the continuous casting slab, resulting in a relatively short stirring time and possible unevenness, thereby reducing the use effect of the existing device.

[0022] By those skilled in the art, the components in this case are connected in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0023] Example 1, by Figure 1-5It can be seen that in this case, a device for improving the center quality of the ingot by externally strengthening the current at the end of continuous casting solidification is provided, which includes a workbench 1. A first DC stirring roller 2 is provided above the workbench 1. The staff passes the continuous casting slab through the upper and lower two first DC stirring rollers 2, and then the continuous casting slab enters the three sets of upper and lower second DC stirring rollers 3 to stir the unsolidified molten steel inside the continuous casting slab. The model of the first DC stirring roller 2 is selected according to actual needs and can meet the work requirements. A second DC stirring roller 3 is provided above the workbench 1. DC power is passed through the first DC stirring roller 2 and the second DC stirring roller 3, and the principle of electromagnetism is used. , multiple groups of upper and lower DC stirring rollers generate DC electricity to pass through the continuous casting slab, and at the same time stimulate an induced magnetic field in the continuous casting slab, so as to use the generated electromagnetic force to stir the unsolidified molten steel inside the continuous casting slab, which can achieve the purpose of expanding the central equiaxed crystal zone and reducing central segregation, thereby improving the stirring efficiency and the quality of the slab. The model of the second DC stirring roller 3 is selected according to actual needs, and it can meet the work. A shell 5 is fixedly connected to the bottom of the workbench 1, and a multi-station mechanism 4 is arranged inside the shell 5. The multi-station mechanism 4 includes: a motor 41 model is selected according to actual needs, and it can meet the work. The motor 41 is fixedly connected to the shell 5. The outer wall, the first bevel gear 42 is fixedly connected to the output shaft of the motor 41, and the motor 41 drives the first bevel gear 42 to rotate. The second bevel gear 43 is meshed with the outer wall of the first bevel gear 42, and the first bevel gear 42 drives the second bevel gear 43 to rotate. The screw 44 is fixedly connected to the inner wall of the second bevel gear 43, and the second bevel gear 43 drives the screw 44 to rotate. The screw nut 45 is fixedly connected to the outer wall of the screw 44, and the screw 44 drives the screw nut 45 to move and is slidably connected to the inner wall of the housing 5. The screw nut 45 slides in the limiting groove at the bottom of the housing 5, and passes through the workbench 1 and moves on the workbench 1. The screw nut 45 is connected to the workbench 1, and the cross plate 46 is fixedly connected to the top of the screw nut 45. The screw nut 45 drives the cross plate 46 to move, and the cross plate 46 thereby drives the second DC stirring roller 3 to move to adjust the position of the multiple sets of second DC stirring rollers 3. The disassembly component 47 is arranged on the outside of the workbench 1, wherein the screw 44 is driven by the motor 41 to move the screw nut 45, drive the cross plate 46 to move, thereby driving the second DC stirring roller 3 to move, and the continuous casting slab is stirred by setting multiple sets of DC stirring rollers. The multiple sets of DC stirring rollers are disassembled by disassembling the component 47;

[0024] During the specific implementation process, it is worth noting that the model of the first DC stirring roller 2 is selected according to actual needs and can meet the work requirements, the model of the second DC stirring roller 3 is selected according to actual needs and can meet the work requirements, and the model of the motor 41 is selected according to actual needs and can meet the work requirements. The staff passes the continuous casting slab through the upper and lower two first DC stirring rollers 2, and then the continuous casting slab enters the three groups of upper and lower second DC stirring rollers 3 to stir the unsolidified molten steel inside the continuous casting slab. Direct current is passed through the first DC stirring roller 2 and the second DC stirring roller 3. Using the principle of electromagnetism, multiple groups of upper and lower DC stirring rollers generate direct current to pass through the continuous casting slab, and at the same time excite an induced magnetic field in the continuous casting slab, thereby using the generated electromagnetic force to stir the unsolidified molten steel inside the continuous casting slab. , which can achieve the purpose of expanding the central equiaxed crystal zone and reducing central segregation, thereby improving the stirring efficiency and the quality of the slab. The motor 41 is connected to the external power supply in sequence, and the motor 41 drives the first bevel gear 42 to rotate, the first bevel gear 42 drives the second bevel gear 43 to rotate, the second bevel gear 43 drives the lead screw 44 to rotate, the lead screw 44 drives the lead screw nut 45 to move, the lead screw nut 45 slides in the limiting groove at the bottom of the shell 5, the lead screw nut 45 moves in the workbench 1, the lead screw nut 45 drives the cross plate 46 to move, and the cross plate 46 thereby drives the second DC stirring roller 3 to move, so as to adjust the position of the multiple groups of second DC stirring rollers 3, and adjust the multiple groups of second DC stirring rollers 3 to the specified position, so as to achieve stirring of the unsolidified molten steel inside the continuous casting slab by the multiple groups of DC stirring rollers;

[0025] Furthermore, the disassembly assembly 47 includes: a sleeve 473, which is arranged above the workbench 1; a key slot 472, which is opened on the inner wall of the sleeve 473; a key block 471, which is fixedly connected to the outer walls of the first DC stirring roller 2 and the second DC stirring roller 3, respectively, and is slidably engaged with the inner wall of the key slot 472; the staff moves the sleeves 473 on both sides, and the sleeves 473 drives the key slots 472 to move, so that the key blocks 471 slide in the key slots 472, and the sleeves 473 are removed from the two ends of the damaged DC stirring rollers for disassembly and repair. In particular, through the cooperation between the sleeves 473 and the key blocks 471, multiple groups of DC stirring rollers can be disassembled and replaced;

[0026] During the specific implementation process, it is worth noting that when one of the DC stirring rollers in the multiple sets of DC stirring rollers is damaged, the staff moves the sleeves 473 on both sides, and the sleeves 473 drive the key slots 472 to move, so that the key blocks 471 slide in the key slots 472, and the sleeves 473 are removed from both ends of the damaged DC stirring roller, and the damaged DC stirring roller is disassembled and repaired. After the repair is completed, the staff then inserts the sleeves 473 on both sides into both ends of the DC stirring roller;

[0027] Furthermore, the first DC stirring roller 2 and the second DC stirring roller 3 are respectively fixedly connected to the inner wall of the sleeve 473 by bolts 4731. The staff first rotates the bolts 4731 to release the fixing of the sleeve 473 and the DC stirring roller, and then disassembles the sleeve 473. When fixing the repaired DC stirring roller, the staff rotates the bolts 4731 in the opposite direction to fix the sleeve 473 and the DC stirring roller again.

[0028] During the specific implementation process, it is worth noting that when disassembling the damaged DC stirring roller, the staff first rotates the bolt 4731 to release the sleeve 473 from the DC stirring roller and disassemble it. When fixing the repaired DC stirring roller, the staff rotates the bolt 4731 in the opposite direction to fix the sleeve 473 to the DC stirring roller again.

[0029] Furthermore, the outer wall of the sleeve 473 is rotatably connected to the first support column 21 and the second support column 31 through bearings, and the first support column 21 is fixedly connected to the inner wall of the workbench 1 by screws. The staff rotates the screws to remove the first support column 21 or the second support column 31, and finally removes the damaged DC stirring roller from the two first support columns 21 or the two second support columns 31. The second support column 31 is fixedly connected to the inner wall of the horizontal plate 46 by screws;

[0030] During the specific implementation process, it is worth noting that when disassembling the damaged DC stirring roller, the staff rotates the screws to remove the first support column 21 or the second support column 31, and finally removes the damaged DC stirring roller from the two first support columns 21 or the two second support columns 31;

[0031] Specifically, first connect the motor 41 to the external power supply in sequence, the motor 41 drives the first bevel gear 42 to rotate, the first bevel gear 42 drives the second bevel gear 43 to rotate, the second bevel gear 43 drives the lead screw 44 to rotate, the lead screw 44 drives the lead screw nut 45 to move, the lead screw nut 45 slides in the limit groove at the bottom of the shell 5, the lead screw nut 45 moves in the workbench 1, the lead screw nut 45 drives the cross plate 46 to move, and the cross plate 46 thereby drives the second DC stirring roller 3 to move to adjust the multi- The position of the second DC stirring roller 3 of the group is adjusted, and the multiple groups of second DC stirring rollers 3 are adjusted to the specified position, and the motor 41 is stopped. After completion, DC power is supplied to the first DC stirring roller 2 and the second DC stirring roller 3. Then the staff passes the continuous casting slab through the upper and lower two first DC stirring rollers 2, and then the continuous casting slab enters the three groups of upper and lower second DC stirring rollers 3. Using the principle of electromagnetism, the multiple groups of upper and lower DC stirring rollers generate DC power to pass through the continuous casting slab, and at the same time stimulate induced magnetism in the continuous casting slab. Magnetic field, thereby using the generated electromagnetic force to stir the unsolidified molten steel inside the continuous casting slab, which can achieve the purpose of expanding the central equiaxed crystal zone and reducing central segregation, thereby improving the stirring efficiency and the quality of the slab. If it is necessary to repair the damaged DC stirring roller, the staff rotates the screw to remove the first support column 21 or the second support column 31. After completion, the staff rotates the bolt 4731 to release the fixation of the sleeve 473 and the DC stirring roller. The staff moves the sleeves 473 on both sides, and the sleeve 473 drives the key slot 472 to move, so that the key block 471 slides in the key slot 472, and the sleeve 473 is removed from the two ends of the damaged DC stirring roller for disassembly and repair. After the repair is completed, the staff inserts the sleeves 473 on both sides into the two ends of the DC stirring roller, and the staff rotates the bolt 4731 in the opposite direction to fix the sleeve 473 to the DC stirring roller again. The staff then rotates the screw in the opposite direction to fix the repaired DC stirring roller to its original position.

[0032] Example 2, by Figure 1-3 It can be seen that the workbench 1 is fixedly connected to the bottom with a support leg 11, which supports the workbench 1. The bottom of the support leg 11 is fixedly connected to a bottom plate 12, which increases the contact area between the support leg 11 and the ground.

[0033] In the specific implementation process, it is worth noting that the support legs 11 support the workbench 1, and the bottom plate 12 increases the contact area between the support legs 11 and the ground, thereby improving the stability of the workbench 1;

[0034] Specifically, the support legs 11 support the workbench 1 , and the bottom plate 12 increases the contact area between the support legs 11 and the ground, thereby improving the stability of the workbench 1 .

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for improving the center quality of a continuous casting billet by using an externally strengthened current at the end of solidification, comprising a workbench (1), characterized in that: A first DC stirring roller (2) is provided above the workbench (1), a second DC stirring roller (3) is provided above the workbench (1), a housing (5) is fixedly connected below the workbench (1), a multi-station mechanism (4) is provided inside the housing (5), and the multi-station mechanism (4) comprises: A motor (41) fixedly connected to the outer wall of the housing (5); a first bevel gear (42) fixedly connected to the output shaft of the motor (41); a second bevel gear (43) meshingly connected to an outer wall of the first bevel gear (42); a lead screw (44) fixedly connected to the inner wall of the second bevel gear (43); A lead screw nut (45) is fixedly connected to the outer wall of the lead screw (44), is slidably engaged with the inner wall of the housing (5), passes through the workbench (1), and is movably connected to the workbench (1); A transverse plate (46) fixedly connected to the upper side of the lead screw nut (45); A disassembly assembly (47) is arranged outside the workbench (1); The lead screw (44) is driven by the motor (41) to move the lead screw nut (45), thereby driving the transverse plate (46) to move, thereby driving the second DC stirring roller (3) to move, and stirring the continuous casting slab by setting multiple groups of DC stirring rollers, and disassembling the multiple groups of DC stirring rollers through the disassembly component (47).

2. The device for improving the center quality of the continuous casting strand by using an externally strengthened current at the end of solidification according to claim 1, characterized in that: The disassembly assembly (47) comprises: A sleeve (473) is arranged above the workbench (1); A keyway (472) is provided on the inner wall of the sleeve (473); A key block (471) is fixedly connected to the outer wall of the first DC stirring roller (2) and the outer wall of the second DC stirring roller (3), and is slidably engaged with the inner wall of the key slot (472); Wherein, multiple groups of DC stirring rollers can be disassembled and replaced by cooperating between the sleeve (473) and the key block (471).

3. The device for improving the center quality of the continuous casting strand by using an externally strengthened current at the end of solidification according to claim 2, characterized in that: The first DC stirring roller (2) and the second DC stirring roller (3) are respectively fixedly connected to the inner wall of the sleeve (473) via bolts (4731).

4. The device for improving the center quality of the continuous casting strand by using an externally strengthened current at the end of solidification according to claim 2, characterized in that: The outer wall of the sleeve (473) is rotatably connected to a first support column (21) and a second support column (31) via bearings, the first support column (21) is fixedly connected to the inner wall of the workbench (1) via screws, and the second support column (31) is fixedly connected to the inner wall of the horizontal plate (46) via screws.

5. The device for improving the center quality of the continuous casting strand by using an externally strengthened current at the end of solidification according to claim 1, characterized in that: A support leg (11) is fixedly connected to the bottom of the workbench (1), and a bottom plate (12) is fixedly connected to the bottom of the support leg (11).

Images