CN113894260A - Rapid dummy ingot removing structure of large-section rectangular billet continuous casting machine and operation method - Google Patents
Rapid dummy ingot removing structure of large-section rectangular billet continuous casting machine and operation method Download PDFInfo
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- CN113894260A CN113894260A CN202111164143.2A CN202111164143A CN113894260A CN 113894260 A CN113894260 A CN 113894260A CN 202111164143 A CN202111164143 A CN 202111164143A CN 113894260 A CN113894260 A CN 113894260A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
- B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
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Abstract
The invention relates to a rapid dummy ingot removing structure of a large-section rectangular billet continuous casting machine and an operation method thereof, and the rapid dummy ingot removing structure comprises a dummy ingot head, a dummy ingot rod plugging piece and positioning pins, wherein a rectangular notch with a downward opening is formed in the end part of the dummy ingot head, the dummy ingot rod plugging piece is installed at the end part of the dummy ingot head and comprises a bottom plate, an anchoring plate and traction plates, the bottom plate is installed at the end part of the dummy ingot head, the traction plates are installed on one side, close to the dummy ingot head, of the bottom plate, the traction plates are transversely arranged in the rectangular notch, arc notches are formed in two sides of the traction plates, two positioning pins vertically inserted into the rectangular notch are arranged at the upper part of the dummy ingot head, the lower ends of the positioning pins are inserted into the arc notches, a pressing plate is installed on the other side of the bottom plate, a felt pad is installed between the bottom plate and the pressing plate, and the anchoring plate is installed on the pressing plate. The invention has the characteristics of compact plugging, easy operation, firm traction force transmission in the dummy ingot process, safety, reliability, small dummy ingot removing force, easy rapid separation and the like.
Description
Technical Field
The invention relates to the technical field of continuous casting equipment installation, in particular to a rapid dummy ingot removing structure of a large-section rectangular billet continuous casting machine and an operation method.
Background
The dummy bar head is an important component of casting equipment of a continuous casting machine, and has the function of extending into the bottom of a crystallizer to draw out a condensed continuous casting blank to sequentially pass through a fan-shaped section and a withdrawal and straightening machine to realize continuous casting of the casting blank. The novel large-section rectangular billet continuous casting machine has larger billet section, and how to realize quick dummy ingot removal becomes an installation technical problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rapid dummy bar removing structure of a large-section rectangular billet continuous casting machine and an operation method, and the rapid dummy bar removing structure is characterized in that a dummy bar blocking piece is adopted for molten steel isolation, a pin hole and a key groove which are arranged on a dummy bar head are used for positioning, a fixed bar is used for fixing, and the fixed bar is broken under the action of a dummy bar removing device to realize rapid separation of a continuous casting billet and the dummy bar head.
The method has the advantages that molten steel does not directly contact with the dummy bar head in the casting process of the continuous casting billet, the transfer of the traction force of the dummy bar is firm, the force for removing the dummy bar is small, and the like, and has great popularization and application values.
The technical scheme adopted by the invention for solving the technical problems is as follows: provides a rapid dummy ingot removing structure of a large-section rectangular billet continuous casting machine, which comprises a dummy ingot head, a dummy ingot rod plugging piece and a positioning pin, the end part of the dummy bar head is provided with a rectangular notch with a downward opening, the dummy bar plugging piece is arranged at the end part of the dummy bar head, the dummy bar plugging piece comprises a bottom plate, an anchoring plate and a traction plate, the bottom plate is arranged at the end part of a dummy bar head, a traction plate is arranged on one side of the bottom plate close to the dummy bar head, the traction plate is transversely arranged on the rectangular notch, arc notches are arranged on both sides of the traction plate, two positioning pins vertically inserted into the rectangular notch are arranged at the upper part of the dummy bar head, the lower end of the positioning pin is inserted into the arc notch, the other side of the bottom plate is provided with a pressing plate, a felt pad is arranged between the bottom plate and the pressing plate, and the pressing plate is provided with an anchoring plate.
As a supplement to the present technical solution, the area of the bottom plate is equal to the area of the pressing plate, and the edge of the pressing plate is flush with the edge of the bottom plate.
As a supplement to the technical scheme, the side face of the end part of the dummy bar head is provided with two key grooves extending to the rectangular notch side by side, and the traction plate is provided with a positioning key inserted into the key grooves.
As a supplement to the technical scheme, one end of the dummy bar plugging piece is inserted into the rectangular groove, a fixing rod penetrating through the dummy bar plugging piece and the dummy bar head is transversely arranged on the dummy bar head, and split pins penetrating through the end parts of the fixing rods are arranged at two ends of the fixing rod.
The technical scheme adopts an operation method of a large-section rectangular billet continuous casting machine rapid dummy ingot removing structure, which comprises the following specific steps:
step a: butting a dummy bar plugging piece with a dummy bar head: firstly, mounting a dummy bar head on the end part of a dummy bar, then mounting a dummy bar plugging piece on the end part of the dummy bar head, fixing the dummy bar plugging piece and arc notches at two sides of a traction plate on the dummy bar plugging piece through two positioning pins, and finally transversely penetrating the dummy bar head and the dummy bar plugging piece through a fixing rod to form connection;
step b: plugging a copper sleeve of the crystallizer: firstly, inserting a dummy bar head with a dummy bar plugging piece into the bottom of a crystallizer copper sleeve, aligning a bottom plate with the bottom surface of the bottom of the crystallizer copper sleeve, sealing a gap between the bottom plate and the crystallizer copper sleeve by a felt pad, then plugging the side wall of the crystallizer copper sleeve, and finally casting molten steel, wherein an anchoring plate is fused with the molten steel to form a continuous casting blank;
step c: and (3) fast dummy ingot removing operation: when the continuous casting billet moves to the dummy ingot removing device through the dummy ingot rod, the dummy ingot removing device is started to enable the dummy ingot head to lift up through upward movement of the dummy ingot removing device, at the moment, the anchoring plate of the dummy ingot rod plugging piece and the continuous casting billet are dissolved into a whole and cannot lift up along with the dummy ingot head under the restraint of a tension leveler press roller, at the moment, upward force of the dummy ingot removing device acts on the fixed rod to enable the fixed rod to break off from the necking part with the groove, the arc notch on the traction plate slides out from the positioning pin, and therefore separation of the dummy ingot head and the dummy ingot rod plugging piece is achieved, and the purpose of quickly removing the dummy ingot is achieved.
As a supplement to the technical scheme, the traction plate in the step a is positioned in the rectangular notch, positioning keys are arranged at two ends of the traction plate, and a key groove clamped with the positioning keys is arranged at the end part of the dummy ingot head.
As a supplement to the technical scheme, iron shavings or sand are uniformly paved above the felt pad.
As a complement to this solution, in step b, chills are arranged around the anchorage plate before casting.
As a supplement to the technical scheme, in the step c, after the rapid dummy ingot removal is completed, the dummy ingot bar blocking piece is cut off by a flame cutting machine.
Has the advantages that: the invention relates to a quick dummy ingot removing structure of a large-section rectangular billet continuous casting machine and an operation method, wherein a dummy bar plugging piece is of a flat plate structure, the gap between the dummy bar plugging piece and a crystallizer copper sleeve is smaller, the gap between the crystallizer copper sleeve can be better plugged by using a felt pad, the flat plate structure is also beneficial to uniformly arranging iron cutting or sand to avoid local overheating and burning the felt pad to cause steel leakage, the traction force of the dummy bar is transmitted to the dummy bar plugging piece through a positioning pin on a dummy bar head and an arc notch on a traction plate, an anchoring plate is fused with molten steel together to be difficult to loosen in the forming process of a continuous casting billet, the molten steel is not in direct contact with the dummy bar head, the dummy bar head and the dummy bar plugging piece are fixed only through a piece of round steel with a smaller diameter, a groove is also processed at the fracture part of the round steel for necking treatment, and a dummy ingot removing device can complete the dummy ingot removing operation only by using smaller jacking force. The device has the characteristics of compact plugging, easy operation, firm traction force transmission in the dummy ingot process, safety, reliability, small dummy ingot removing force, contribution to quick separation and the like.
Drawings
FIG. 1 is a structural view of the present invention;
FIG. 2 is a structural view of a dummy bar block according to the present invention;
FIG. 3 is a schematic view of the construction of the dummy bar block piece of the present invention as it passes through the protective cover of the crystallizer;
FIG. 4 is a structural view of the dummy bar block piece of the present invention in butt joint with the copper sleeve of the crystallizer;
FIG. 5 is a schematic view of the construction of the present invention in the event of a dummy ingot removal operation.
The figure is as follows: 1. the device comprises a dummy bar head, 2, a rectangular notch, 3, a pin hole, 4, a positioning pin, 5, a key groove, 6, a fixing rod, 7, a split pin, 8, a dummy bar plugging piece, 9, a traction plate, 10, a positioning key, 11, an arc notch, 12, a bottom plate, 13, a felt pad, 14, a pressing plate, 15, an anchoring plate, 16, a crystallizer protection cover, 17, a crystallizer copper sleeve, 18, a continuous casting billet, 19 and a stripping device.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a rapid dummy ingot removing structure of a large-section rectangular billet continuous casting machine and an operation method thereof, as shown in figures 1-4, the rapid dummy ingot removing structure comprises a dummy ingot head 1, a dummy ingot rod plugging piece 8 and a positioning pin 4, wherein a rectangular notch 2 with a downward opening is arranged at the end part of the dummy ingot head 1, the dummy ingot rod plugging piece 8 comprises a bottom plate 12, an anchoring plate 15 and a traction plate 9, the bottom plate 12 is arranged at the end part of the dummy ingot head 1, one side of the bottom plate 12 close to the dummy ingot head 1 is provided with the traction plate 9, the traction plate 9 is transversely arranged at the rectangular notch 2, two sides of the traction plate 9 are respectively provided with an arc notch 11, the upper part of the dummy ingot head 1 is provided with two positioning pins 4 vertically inserted into the rectangular notch 2, the lower ends of the positioning pins 4 are inserted into the arc notches 11, the other side of the bottom plate 12 is provided with a pressing plate 14, a felt pad 13 is arranged between the bottom plate 12 and the pressing plate 14, and the pressing plate 14 is provided with an anchoring plate 15.
Among this technical scheme, through setting up the installation that makes things convenient for dummy bar shutoff piece 8 of rectangle notch 2, simultaneously through setting up circular arc breach 11, locating pin 4 and pinhole 3 for dummy bar shutoff piece 8 accomplishes fixedly with dummy bar head 1, when also making things convenient for dummy bar head 1 to turn over, breaks away from with dummy bar shutoff piece 8 fast simultaneously.
The bottom plate 12 is arranged to be convenient to be in butt joint with the bottom of the copper sleeve 17 of the crystallizer, meanwhile, the pressing plate 14 is arranged to supplement the end face of a casting piece, and finally, the felt pad 13 is arranged to ensure that no gap exists between the copper sleeve 17 of the crystallizer and the bottom plate 12, so that the production safety is ensured, and molten steel leakage is avoided.
The area of the bottom plate 12 is equal to that of the pressure plate 14, and the edge of the pressure plate 14 is flush with the edge between the bottom plates 12.
As a supplement to the technical scheme, two key slots 5 extending to the rectangular notch 2 are arranged side by side on the side surface of the end part of the dummy bar head 1, and a positioning key 10 inserted into the key slots 5 is arranged on the traction plate 9.
Through setting up keyway 5 and navigation key 10 among this technical scheme to make things convenient for dummy bar head 1 and dummy bar shutoff piece 8 to carry out quick location butt joint.
As a supplement to the technical solution, one end of the dummy bar block piece 8 is inserted into the rectangular notch 2, the dummy bar head 1 is transversely provided with a fixing rod 6 passing through the dummy bar block piece 8 and the dummy bar head 1, and two ends of the fixing rod 6 are provided with cotter pins 7 passing through the end parts of the fixing rod 6.
Through setting up dead lever 6 among this technical scheme, ensure that dummy bar shutoff piece 8 installation is firm, take place the drawing of patterns when avoiding removing, through setting up split pin 7, come to fix a position dead lever 6 simultaneously, avoid dead lever 6 to deviate from.
The technical scheme adopts an operation method of a large-section rectangular billet continuous casting machine rapid dummy ingot removing structure, which comprises the following specific steps:
step a: butting the dummy bar plugging piece 8 with the dummy bar head 1: firstly, mounting a dummy bar head 1 on the end part of a dummy bar, then mounting a dummy bar plugging piece 8 on the end part of the dummy bar head 1, fixing the dummy bar plugging piece with arc notches 11 at two sides of a traction plate 9 on the dummy bar plugging piece 8 through two positioning pins 4, and finally transversely penetrating the dummy bar head 1 and the dummy bar plugging piece 8 through a fixing rod 6 to form connection;
step b: plugging a copper sleeve of the crystallizer: firstly, inserting a dummy bar head 1 with a dummy bar plugging piece 8 into the bottom of a crystallizer copper sleeve 17, aligning a bottom plate 12 with the bottom surface of the bottom of the crystallizer copper sleeve 17, sealing a gap between the bottom plate 12 and the crystallizer copper sleeve 17 by a felt pad 13, then plugging the side wall of the crystallizer copper sleeve 17, and finally casting molten steel, wherein an anchoring plate 15 and the molten steel are fused together to form a continuous casting blank 18;
step c: and (3) fast dummy ingot removing operation: when the continuous casting billet 18 moves to the dummy ingot removing device 19 through the dummy ingot rod, the dummy ingot removing device 19 is started to enable the dummy ingot head 1 to move upwards so as to lift up, at the moment, the anchoring plate 15 of the dummy ingot rod plugging piece 8 and the continuous casting billet 18 are dissolved into a whole and cannot lift up along with the dummy ingot head 1 under the restraint of a tension leveler press roller, the upward force of the dummy ingot removing device 19 acts on the fixing rod 6 to enable the fixing rod 6 to break from the necking part processed with the groove, the arc notch 11 on the traction plate 9 slides out from the positioning pin 4, so that the separation of the dummy ingot head 1 and the dummy ingot rod plugging piece 8 is realized, and the purpose of quickly removing the dummy ingot is achieved.
As a supplement to the technical scheme, the traction plate 9 in the step a is positioned in the rectangular notch 2, positioning keys 10 are arranged at two ends of the traction plate 9, and a key groove 5 which is clamped with the positioning keys 10 is arranged on the end part of the dummy bar head 1.
As a supplement to the technical solution, iron shavings or sand are uniformly laid on the felt mat 13.
The mat 13 is prevented from burning out by providing iron filings or sand on the mat 13 for heat insulation.
As a complement to this solution, in step b, chills are arranged around the anchorage plate 15 as described before the casting.
As a supplement to the technical solution, in step c, after the rapid dummy ingot removal is completed, the dummy ingot bar block piece 8 is cut by a flame cutting machine.
The dummy bar head 1 in be provided with two pinhole 3 that correspond with locating pin 4, pinhole 3 is the cylinder type structure, sets up on dummy bar head 1, link up to rectangle notch 2 always in, the pinhole 3 that is located rectangle notch 2 is the semicircle type structure, sets up in the both sides face department of rectangle notch 2, after locating pin 4 inserts pinhole 3, is located the inside of dummy bar head 1 of locating pin 4 that rectangle notch 2 was located, half holds the circular arc breach 11 looks adaptation that exposes state and traction plate 9, realizes the transmission of traction force.
Examples
A dummy bar head 1 is mounted on a dummy bar storage device so that a rectangular notch 2 of the dummy bar head 1 faces downward, and a dummy bar feeding program is started to feed the dummy bar head 1 out beyond a mold protection cover 16. The method comprises the steps of installing an anchoring plate 15 of a dummy bar plugging piece 8 upwards and a traction plate 9 downwards on a dummy bar head 1, aligning an arc notch 11 on the traction plate 9 with a positioning pin 4 on the dummy bar head 1, aligning a positioning key 10 with a key groove 5 on the dummy bar head 1, enabling the dummy bar plugging piece 8 to be attached to the side wall of a rectangular notch 2, penetrating a fixing rod 6 from one side of the dummy bar head 1 to fix the dummy bar plugging piece 8 in the rectangular notch 2, installing a split pin 7 in pin holes at two ends of the fixing rod 6 to fix the split pin after the fixing rod 6 is penetrated in place, and enabling a necking part with a groove processed on the fixing rod 6 to be just located at the edge of the rectangular notch 2.
When the dummy bar plugging piece 8 is installed on the dummy bar head 1, the dummy bar is retracted, the dummy bar plugging piece 8 penetrates through the crystallizer protection cover 16, the bottom plate 12 of the dummy bar plugging piece 8 is positioned at the bottom of the crystallizer copper sleeve 17, the felt pad 13 is turned upwards in the downward movement process of the dummy bar head 1 to fill the gap between the bottom plate 12 and the side wall of the crystallizer copper sleeve 17, the iron shavings or the sands are uniformly paved above the felt pad 13, and the upper cooling iron and the nail pins are placed between the anchoring plates 15 to enable the molten steel to be rapidly solidified. After the side wall of the copper sleeve 17 of the crystallizer is sealed, molten steel casting can be carried out, and the anchoring plate 15 is fused with the molten steel.
When a continuous casting billet 18 runs to a dummy ingot removing device 19 under the traction of a dummy ingot rod, the dummy ingot removing device 19 is started to enable the dummy ingot head 1 to move upwards so as to lift up the dummy ingot head 1, at the moment, because the anchoring plate 15 of the dummy ingot rod plugging piece 8 and the continuous casting billet 18 are dissolved into a whole under the restraint of a tension leveler press roller, the dummy ingot head 1 cannot be lifted up along with the dummy ingot head 1, the upward force of the dummy ingot removing device 19 acts on a fixing rod 6 to enable the fixing rod 6 to be disconnected from a necking part processed with a groove, and an arc notch 11 on a traction plate 9 slides out from a positioning pin 4, so that the separation of the dummy ingot head 1 and the dummy ingot rod plugging piece 8 is realized, and the purpose of quickly removing the dummy ingot is achieved. Finally, the dummy bar block piece 8 is cut off by a flame cutting machine.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above detailed description is given to the structure and the operation method for rapidly removing the dummy ingot of the large-section rectangular billet continuous casting machine, and the principle and the implementation mode of the application are explained by applying a specific example in the description, and the description of the above embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. The utility model provides a large cross section rectangle base conticaster takes off dummy ingot structure fast which characterized in that: comprises a dummy bar head (1), a dummy bar plugging piece (8) and positioning pins (4), wherein a rectangular notch (2) with a downward opening is formed in the end part of the dummy bar head (1), the dummy bar plugging piece (8) is installed at the end part of the dummy bar head (1), the dummy bar plugging piece (8) comprises a bottom plate (12), an anchoring plate (15) and a traction plate (9), the bottom plate (12) is installed at the end part of the dummy bar head (1), the traction plate (9) is installed on one side, close to the dummy bar head (1), of the bottom plate (12), the traction plate (9) is transversely arranged on the rectangular notch (2), arc notches (11) are formed in two sides of the traction plate (9), two positioning pins (4) vertically inserted into the rectangular notch (2) are arranged on the upper part of the dummy bar head (1), and the lower ends of the positioning pins (4) are inserted into the arc notches (11), the other side of bottom plate (12) install clamp plate (14), bottom plate (12) and clamp plate (14) between install felt pad (13), clamp plate (14) on install anchor plate (15).
2. The large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 1, which is characterized in that: the area of the bottom plate (12) is equal to that of the pressing plate (14), and the edge of the pressing plate (14) is flush with the edge of the bottom plate (12).
3. The large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 1, which is characterized in that: the dummy bar head is characterized in that two key grooves (5) extending to the rectangular notch (2) are arranged on the side face of the end part of the dummy bar head (1) side by side, and a positioning key (10) inserted into the key grooves (5) is arranged on the traction plate (9).
4. The large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 1, which is characterized in that: one end of the dummy bar plugging piece (8) is inserted into the rectangular notch (2), a fixing rod (6) which penetrates through the dummy bar plugging piece (8) and the dummy bar head (1) is transversely arranged on the dummy bar head (1), and split pins (7) which penetrate through the end parts of the fixing rod (6) are arranged at the two ends of the fixing rod (6).
5. The operation method of the large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 1 comprises the following specific steps:
(a) and butting the dummy bar plugging piece (8) with the dummy bar head (1): firstly, a dummy bar head (1) is arranged on the end part of a dummy bar, then a dummy bar plugging piece (8) is arranged on the end part of the dummy bar head (1), and is fixed with arc notches (11) at two sides of a traction plate (9) on the dummy bar plugging piece (8) through two positioning pins (4), and finally, a fixing rod (6) transversely penetrates through the dummy bar head (1) and the dummy bar plugging piece (8) to form connection;
(b) and plugging a copper sleeve of the crystallizer: firstly, a dummy bar head (1) with a dummy bar plugging piece (8) is inserted into the bottom of a crystallizer copper sleeve (17), a bottom plate (12) is aligned with the bottom surface of the bottom of the crystallizer copper sleeve (17), a felt pad (13) seals a gap between the bottom plate (12) and the crystallizer copper sleeve (17), then side wall plugging is carried out on the crystallizer copper sleeve (17), finally molten steel casting is carried out, and an anchoring plate (15) and the molten steel are fused together to form a continuous casting blank (18).
(c) And rapidly removing the dummy ingot: when continuous casting billet (18) moved to and taken off spindle device (19) through the dummy bar, start and take off spindle device (19) and make its upward movement make dummy bar head (1) lift up, at this moment because anchor plate (15) of dummy bar shutoff piece (8) have dissolved as an organic whole with continuous casting billet (18) and can not lift up along with dummy bar head (1) under the withdrawal and straightening machine compression roller restraint, take off spindle device (19) ascending strength this moment and will act on dead lever (6) and make it break off from processing notched necking down position, circular arc breach (11) on traction plate (9) are followed locating pin (4) and are slided out, thereby realize dummy bar head (1) and the separation of dummy bar shutoff piece (8), reach the purpose of taking off the dummy bar fast.
6. The operation method of the large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 5, characterized in that: and a traction plate (9) in the step a is positioned in the rectangular notch (2), positioning keys (10) are arranged at two ends of the traction plate (9), and a key groove (5) which is clamped with the positioning keys (10) is arranged at the end part of the dummy bar head (1).
7. The operation method of the large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 5, characterized in that: in the step b, iron shavings or sand are uniformly paved above the felt pad (13).
8. The operation method of the large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 5, characterized in that: in the step b, chilling blocks are arranged around the anchoring plates (15) before casting.
9. The operation method of the large-section rectangular billet continuous casting machine rapid dummy ingot removing structure according to claim 5, characterized in that: in the step c, after the rapid dummy ingot removal is completed, the dummy ingot rod plugging piece (8) is cut off by a flame cutting machine.
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| DE202011109443U1 (en) * | 2011-12-23 | 2012-01-31 | Sms Siemag Ag | Device for starting up a continuous casting plant |
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| EP3797897A1 (en) * | 2019-09-26 | 2021-03-31 | Sarralle Equipos Siderurgicos, S.L. | Sealing device of the dummy bar of a continuous casting machine and associated assembly process |
| CN213437061U (en) * | 2020-08-10 | 2021-06-15 | 南京钢铁股份有限公司 | Anti-seepage steel and anti-stripping billet continuous casting dummy ingot device |
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