Crystallizer for continuous casting

Abstract

The invention belongs to the technical field of crystallizers, and particularly relates to a crystallizer for continuous casting, the crystallizer comprises a dynamic deformation base body, a multi-dimensional vibration mechanism and a gradient cooling mechanism, the dynamic deformation base body has a first state when molten steel is not solidified and a second state when the molten steel is solidified, the dynamic deformation base body gradually shrinks inwards to be attached to a blank shell; when the dynamic deformation base body is switched to the second state, the multi-dimensional vibration mechanism is automatically driven to start to work, and multi-angle vibration is conducted on the dynamic deformation base body; the gradient cooling mechanism is used for cooling the inner wall of the dynamic deformation base body through circulating cooling water when the gradient cooling mechanism works, and the flow speed of the circulating cooling water is automatically adjusted when the multi-dimensional vibration mechanism works. The problem that in the steel billet curing process, a gap is formed between a billet shell and the inner wall of the crystallizer, and the later-period steel billet forming quality is affected after air enters is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of crystallizers, and specifically to a crystallizer for continuous casting. Background Art

[0002] In the steel manufacturing industry, crystallization is a relatively common method. The crystallizer is a basic component of the continuous casting process of molten metal (such as steel). The crystallizer is where the solidification process of liquid steel begins and undergoes significant thermal stress (which increases due to productivity).

[0003] During the process of crystallizing molten steel through the crystallizer, the molten steel first generates a shell inside the matrix of the crystallizer and then gradually solidifies from the outside to the inside. After the solidification is completed, the steel embryo is pulled out through the outlet at the bottom of the matrix to complete the crystallization and forming of the steel.

[0004] However, the inner wall structure of the matrix of the current crystallizer has a fixed size. During the solidification process of the steel embryo, due to the principle of thermal expansion and contraction, a gap gradually forms between the shell and the inner wall of the matrix, so that external air will penetrate in. At the same time, the air mixed with vaporized water mist is likely to enter the interior of the steel embryo that has not been completely solidified along with the air, thus forming pores inside the steel embryo. Therefore, it is necessary to perform negative pressure treatment on the air in the gap. However, during this process, the shell is prone to local deformation under the tensile force of the negative pressure in the gap, such as the phenomenon of pulling out burrs, etc., resulting in an unstable shape of the completely solidified steel embryo, and further affecting the quality of the steel embryo after crystallization and forming. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a crystallizer for continuous casting, which replaces the crystallizer used in the traditional steel embryo production process, and avoids the problem that the quality of the later steel embryo forming is affected after air enters due to the formation of a gap between the shell and the inner wall of the crystallizer during the solidification process of the steel embryo.

[0007] To solve the above technical problems, according to one aspect of the present invention, the following technical solutions are provided:

[0008] A crystallizer for continuous casting, which comprises:

[0009] A dynamically deformable matrix, with open structures at both ends and used for injecting molten steel for crystallization, wherein the dynamically deformable matrix has a first state when the molten steel is not solidified and a second state when the molten steel is solidified, gradually shrinking inwards to keep in contact with the embryo shell;

[0010] A multi-dimensional vibration mechanism is installed on the dynamic deformation substrate, wherein when the dynamic deformation substrate switches to the second state, the multi-dimensional vibration mechanism is automatically driven to start working, and the dynamic deformation substrate is vibrated at multiple angles;

[0011] A gradient cooling mechanism acts on the dynamic deformation matrix and cools the inner wall of the dynamic deformation matrix through circulating cooling water when working, wherein when the multi-dimensional vibration mechanism is working, the flow rate of the circulating cooling water is automatically adjusted.

[0012] As a preferred embodiment of a crystallizer for continuous casting described in the present invention, the dynamically deformable matrix includes an outer shell having an inner wall provided with a plurality of limiting protrusions along the circumferential direction and an open structure at both ends, a plurality of arc-shaped steel tiles located inside the outer shell and having dovetail grooves on the outer walls, and memory alloy compensation plates located on both sides of the arc-shaped steel tiles, wherein the limiting protrusions extend into the dovetail grooves.

[0013] As a preferred embodiment of a crystallizer for continuous casting described in the present invention, the multi-dimensional vibration mechanism includes a vibration box located at the bottom of the outer shell and having a through groove in the middle, a multi-dimensional vibration member located inside the vibration box, and a transmission assembly having one end transmission connected to the arc-shaped steel tile and the other end transmission connected to the multi-dimensional vibration member.

[0014] As a preferred solution of the crystallizer for continuous casting described in the present invention, the top and both sides of the inner wall of the vibration box have a plurality of first arc-shaped protrusions and the rear side wall has a second arc-shaped protrusion, and the inner wall bottom of the vibration box has first mounting plates on both sides;

[0015] The multi-dimensional vibration component includes a rotating column rotatably mounted on the side wall of the first mounting plate, a first elastic protrusion located on the circumferential side wall of the rotating column and corresponding to the first arc-shaped protrusions, and a second elastic protrusion located at the end of the rotating column and corresponding to the second arc-shaped protrusion.

[0016] As a preferred solution of the crystallizer for continuous casting described in the present invention, the bottom of the inner wall of the vibration box has a second mounting plate;

[0017] The side wall of the first mounting plate has a first pulley connected to the side wall of the rotating column via a rotating shaft;

[0018] The transmission assembly includes a first gear mounted on the side wall of the second mounting plate, two second gears mounted at both ends of the side wall of the second mounting plate and meshing with the first gear, and a transmission member with one end drivingly connected to the sector-shaped steel tile and the other end drivingly connected to the first gear. The side wall of the second gear has a second pulley connected to the first pulley through a belt.

[0019] As a preferred solution of the continuous casting mold according to the present invention, wherein, the side wall of the first gear has a pulley set;

[0020] The bottom of one of the arc-shaped steel tiles has a serrated plate;

[0021] The transmission member includes a bevel gear set mounted on the top of the vibration box and drivingly connected to the pulley set at one end, and a transmission gear located at the other end of the bevel gear set and meshing with the serrated plate.

[0022] As a preferred solution of the continuous casting mold according to the present invention, wherein, a connecting member is connected between the transmission gear and the bevel gear set. The connecting member includes a ratchet connecting seat with a ratchet groove on the side wall and a ratchet located in the ratchet groove and having a plurality of elastic pawls along the circumferential direction.

[0023] As a preferred solution of the continuous casting mold according to the present invention, wherein, the gradient cooling mechanism includes a high-level water tank mounted on one side of the outer shell, a spiral shunt pipe with one end communicating with the bottom of the high-level water tank and wound around the side wall of the outer shell, a return tank located on the top of the vibration box, and a diversion assembly drivingly connected to the rotating column and guiding the water in the return tank back to the high-level water tank during operation.

[0024] As a preferred solution of the continuous casting mold according to the present invention, wherein, the inner wall of the outer shell has a cooling cavity, and the bottom of the cooling cavity has a return pipe with the other end communicating with the return tank;

[0025] The spiral shunt pipe is wound around the side wall of the outer shell in a double-headed reverse spiral manner, and a plurality of tapered water spray holes extending into the cooling cavity are evenly distributed on the side wall of the spiral shunt pipe.

[0026] As a preferred solution of the continuous casting mold according to the present invention, wherein, the outer side wall of the vibration box has a third pulley with the side wall connected to one of the rotating columns through a rotating shaft;

[0027] The diversion assembly includes a diversion pipe with one end communicating with the bottom of the reflux tank and the other end communicating with the top of the high-position water tank, and a booster impeller located inside the diversion pipe and having a fourth pulley connected to a rotating shaft, where the fourth pulley is connected to the third pulley through a belt.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows. For the mold used in continuous casting, when the molten steel starts to solidify in the dynamic deformation matrix, the dynamic deformation matrix switches to the second state for contraction, so that the inner wall always remains in contact with the embryo shell, thus avoiding the formation of gaps between the two. And when the dynamic deformation matrix contracts, it drives the multi-dimensional vibration mechanism to perform multi-dimensional vibration, which facilitates the separation between the steel embryo and the inner wall of the dynamic deformation matrix at the beginning of solidification, thus facilitating the subsequent drawing of the embryo. At the same time, when the multi-dimensional vibration mechanism works, it automatically adjusts the flow rate of the circulating cooling water of the gradient cooling mechanism, so that the cooling rate matches the solidification shrinkage of the steel embryo, replacing the mold used in the traditional steel embryo production process, and avoiding the problem that gaps are formed between the embryo shell and the inner wall of the mold during the solidification of the steel embryo, which affects the forming quality of the subsequent steel embryo after air enters. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0030] Figure 1 It is a schematic structural view of a perspective of a mold for continuous casting of the present invention;

[0031] Figure 2 It is a schematic structural view of another perspective of a mold for continuous casting of the present invention;

[0032] Figure 3 It is a structural decomposition view of a mold for continuous casting of the present invention;

[0033] Figure 4 It is a structural decomposition view of the dynamic deformation matrix of a mold for continuous casting of the present invention;

[0034] Figure 5 It is a sectional view of the vibration box of a mold for continuous casting of the present invention;

[0035] Figure 6 It is a structural decomposition view of the multi-dimensional vibration mechanism of a mold for continuous casting of the present invention;

[0036] Figure 7 This is a schematic structural diagram of a flow guiding component of a mold for continuous casting according to the present invention.

[0037] In the figure: 100, dynamic deformation matrix; 110, outer housing; 110a, limit bump; 110b, cooling cavity; 110b-1, return pipe; 120, sector steel tile; 120a, dovetail groove; 120b, serrated plate; 130, shape memory alloy compensating sheet; 200, multi-dimensional vibration mechanism; 210, vibration box; 210a, through groove; 210b, first arc-shaped bump; 210c, second arc-shaped bump; 210d, second mounting plate; 210e, first mounting plate; 220, multi-dimensional vibration member; 220a, rotating column; 220a-1, third pulley; 220b, first elastic bump; 220c, second elastic bump; 230, transmission component; 230a, first gear; 230b, second gear; 230c, transmission member; 230c-1, bevel gear set; 230c-2, transmission gear; 300, gradient cooling mechanism; 310, high-level water tank; 320, spiral shunt pipe; 330, return box; 340, flow guiding component; 340a, flow guiding pipe; 340b, booster impeller; 340b-1, fourth pulley. Specific embodiments

[0038] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Secondly, the present invention will be described in detail in combination with the schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] The present invention provides a mold for continuous casting, which replaces the mold used in the traditional steel billet production process, and avoids the problem that during the solidification of the steel billet, a gap is formed between the shell of the billet and the inner wall of the mold, thereby affecting the quality of the later steel billet forming after air enters.

[0042] Figures 1-7 Shown is a schematic structural diagram of a mold for continuous casting according to the present invention. Please refer to Figures 1-7 A detailed introduction will be given to this kind of mold for continuous casting.

[0043] Example 1

[0044] Reference Figures 1-5 The present invention discloses a mold for continuous casting, the main part of which includes a dynamic deformation matrix 100, a multi-dimensional vibration mechanism 200 and a gradient cooling mechanism 300.

[0045] Reference Figures 1-4 The dynamic deformation matrix 100 is used to automatically synchronously contract during the process of solidification and shrinkage of the molten steel inside. Both ends of the dynamic deformation matrix 100 are open structures and are used to inject molten steel for crystallization. Among them, the dynamic deformation matrix 100 has a first state when the molten steel is not solidified and a second state when the molten steel is solidified, gradually contracting inward to keep in contact with the embryo shell. Thus, when the molten steel inside the dynamic deformation matrix 100 begins to solidify, the steel embryo begins to contract due to thermal expansion and contraction. At this time, the dynamic deformation matrix switches to the second state for synchronous contraction, so as to always keep the embryo shell in contact with its inner wall and avoid gaps between the embryo shell and its inner wall.

[0046] Reference Figures 1-5 The multi-dimensional vibration mechanism 200 is used to perform multi-dimensional vibration on the dynamic deformation matrix 100 during operation, so as to make the separation of the steel embryo from it more efficient. The multi-dimensional vibration mechanism 200 is installed on the dynamic deformation matrix 100. Among them, when the dynamic deformation matrix 100 switches to the second state, it automatically drives the multi-dimensional vibration mechanism to start working and vibrates the dynamic deformation matrix 100 at multiple angles. Thus, when the dynamic deformation matrix 100 switches to the second state and starts to contract, it means that the steel embryo has begun to solidify. At this time, the multi-dimensional vibration mechanism 200 automatically starts to work and performs multi-dimensional vibration on the dynamic deformation matrix 100, so as to form a multi-angle composite vibration, effectively destroying the adhesion force between the steel embryo and the inner wall of the dynamic deformation matrix 100, and thus making the subsequent drawing of the embryo more efficient.

[0047] Reference Figures 1-3 The gradient cooling mechanism 300 is used to cool down the steel embryo inside the dynamic deformation matrix 100, so as to accelerate the solidification and crystallization speed of the steel embryo and improve production efficiency. The gradient cooling mechanism acts on the dynamic deformation matrix 100 and cools down the inner wall of the dynamic deformation matrix 100 by circulating cooling water during operation. Among them, when the multi-dimensional vibration mechanism 200 works, it automatically adjusts the flow rate of the circulating cooling water, so that the circulating cooling water of the gradient cooling mechanism 300 acts on the dynamic deformation matrix 100 to cool down the steel embryo. At the same time, when the multi-dimensional vibration mechanism 200 works, it automatically adjusts the flow rate of the circulating cooling water, so that the cooling speed and the vibration frequency are matched.

[0048] In this embodiment, the specific usage process is as follows: Molten steel is injected into the internal part of the dynamic deformation matrix 100. Under the action of the gradient cooling mechanism 300, the molten steel inside is cooled down. When the molten steel begins to solidify to form a shell embryo, due to thermal expansion and contraction, the steel embryo begins to shrink, and the dynamic deformation matrix 100 begins to shrink and switch to the second state, so that its inner wall always keeps in a fitting state with the shell embryo, thus avoiding the entry of air due to the appearance of a gap between the two. At the same time, when the dynamic deformation matrix contracts, it drives the multi-dimensional vibration mechanism 200 to start working to perform multi-dimensional vibration on the dynamic deformation matrix, so as to provide a multi-directional shearing action, effectively destroying the adhesion force between the shell embryo and the inner wall of the dynamic deformation matrix 100, which is more conducive to subsequent drawing of the embryo. During this process, the multi-dimensional vibration mechanism 200 is only started when the steel embryo shrinks, which is more energy-saving compared with continuous vibration. The flow rate of the circulating cooling water of the gradient cooling mechanism 300 is automatically adjusted according to the frequency of the multi-dimensional vibration mechanism, so that the cooling rate of the steel embryo corresponds to the shrinkage rate of the steel embryo and the vibration frequency, thus avoiding untimely cooling or overcooling of the shell embryo.

[0049] Example 2

[0050] On the basis of Example 1, referring to Figures 1-4 , the dynamic deformation matrix 100 includes a housing 110 with a plurality of limiting bumps 110a arranged along the circumferential direction on its inner wall and an open structure at both the upper and lower ends, a plurality of arc-shaped steel tiles located inside the housing 110 and having dovetail grooves 120a on their outer side walls, and shape memory alloy compensation sheets 130 located on both sides of the arc-shaped steel tiles. Among them, the limiting bumps 110a extend into the dovetail grooves 120a. The housing 110 is used to facilitate the installation of a plurality of arc-shaped steel tiles. The limiting bumps 110a are used to cooperate with the dovetail grooves 120a to make the housing 110 and the plurality of arc-shaped steel tiles movably connected. The plurality of arc-shaped steel tiles are used to keep the inner wall of the shell embryo in a fitting state with the shell embryo when the steel embryo shrinks and drives them to move inward and gather together, thus avoiding the appearance of a gap. The dovetail grooves 120a are used to ensure the radial movement of the arc-shaped steel tiles, and the side wall of the dovetail groove 120a forms an angle of fifty-five degrees with the radial plane, so as to decompose the molten steel pressure borne by the arc-shaped copper tiles. The shape memory alloy compensation sheets 130 are used to seal the gap between two adjacent arc-shaped steel tiles when the plurality of arc-shaped steel tiles move.

[0051] In this embodiment, the specific working process is as follows: when molten steel is injected between multiple arc-shaped steel tiles, due to thermal expansion and contraction, multiple arc-shaped steel tiles expand and move radially along the dovetail groove 120a. At this time, the memory alloy compensation plate 130 expands to seal the gap formed between two adjacent arc-shaped steel tiles. When the steel embryo begins to shrink, as the surface of the steel embryo begins to solidify and shrink, a force difference is formed between the solidified shell and the working surface of the arc-shaped copper tile. The static pressure of the molten steel acting on the outer surface of the arc-shaped steel tile and the inward tensile force generated when the embryo shell solidifies drive the multiple arc-shaped steel tiles to move inward, thereby avoiding the formation of gaps between the embryo shell and the arc-shaped steel tile.

[0052] Example 3

[0053] Based on Example 2, Figures 1-6 The multi-dimensional vibration mechanism 200 includes a vibration box 210 located at the bottom of the outer shell 110 and having a through groove 210a in the middle, a multi-dimensional vibration member 220 located inside the vibration box 210, and a transmission assembly 230 which is transmission-connected to the arc-shaped steel tile at one end and transmission-connected to the multi-dimensional vibration member 220 at the other end. The vibration box 210 is used to drive the dynamic deformation base 100 to perform multi-dimensional vibration during multi-dimensional vibration, the through groove 210a is used to facilitate the discharge of the steel billet, the multi-dimensional vibration member 220 is used to drive the vibration box 210 to perform multi-dimensional vibration during operation, and the transmission assembly 230 is used to drive the multi-dimensional vibration member 220 to work when the arc-shaped steel tile shrinks and moves.

[0054] In this embodiment, reference Figures 5-6 The top and both sides of the inner wall of the vibration box 210 have a plurality of first arc-shaped protrusions 210b, and the rear side wall has a second arc-shaped protrusion 210c. The first arc-shaped protrusion 210b is used to resist the first elastic protrusion 220b, so that the first elastic protrusion 220b is intermittently compressed and reset during the rotation process, so that the vibration box 210 generates longitudinal and left-right lateral vibrations. The second arc-shaped protrusion 210c is used to resist the second elastic protrusion 220c, so that the second elastic protrusion 220c is intermittently compressed and reset during the rotation process, so that the vibration box 210 generates front-back lateral vibrations. The inner wall bottom of the vibration box 210 has first mounting plates 210e on both sides for facilitating the installation of the rotating column 220a.

[0055] refer to Figures 5-6, the multi-dimensional vibration member 220 includes a rotating column 220a rotatably mounted on the side wall of the first mounting plate 210e, a first elastic bump 220b located on the circumferential side wall of the rotating column 220a and corresponding to a plurality of first arc-shaped bumps 210b, and a second elastic bump 220c located at the end of the rotating column 220a and corresponding to the second arc-shaped bump 210c. The rotating column 220a is used to facilitate the installation of the first elastic bump 220b and the second elastic bump 220c. The first elastic bump 220b is used to be compressed when contacting the first arc-shaped bump 210b, and during the process of resetting after separating from the first arc-shaped bump 210b, intermittently impact the top and the left and right side walls of the inner wall of the vibration box 210, thereby generating longitudinal and left and right lateral vibrations. Similarly, the second elastic bump 220c is used to cooperate with the second arc-shaped bump 210c to intermittently generate front and rear lateral vibrations.

[0056] In this embodiment, referring to Figure 5 , the bottom of the inner wall of the vibration box 210 has a second mounting plate 210d for facilitating the installation of the first gear 230a;

[0057] Referring to Figures 5-6 , the side wall of the first mounting plate 210e has a first pulley connected to the side wall of the rotating column 220a by a rotating shaft for driving the rotating column 220a to rotate when rotating;

[0058] Referring to Figures 5-6 , the transmission assembly 230 includes a first gear 230a mounted on the side wall of the second mounting plate 210d, two second gears 230b mounted at both ends of the side wall of the second mounting plate 210d and meshing with the first gear 230a, and a transmission member 230c with one end drivingly connected to the sector steel tile 120 and the other end drivingly connected to the first gear 230a. The side wall of the second gear 230b has a second pulley connected to the first pulley by a belt. The first gear 230a is used to drive the two second gears 230b to rotate when rotating. The second gear 230b is used to drive the second pulley to rotate when rotating. The second pulley is used to drive the first pulley to rotate when rotating. The transmission member 230c is used to drive the first gear 230a to rotate when the arc-shaped steel tile contracts and deforms.

[0059] In this embodiment, the side wall of the first gear 230a has a pulley set for driving the first gear 230a to rotate when rotating;

[0060] Referring to Figures 3-4 , the bottom of one of the arc-shaped steel tiles has a serrated plate 120b for driving the transmission gear 230c-2 to rotate when the arc-shaped steel tile contracts and moves to drive the serrated plate 120b to move;

[0061] The transmission member 230c includes a bevel gear set 230c-1 mounted on the top of the vibration box 210 and having one end drivingly connected to the pulley set, and a transmission gear 230c-2 located at the other end of the bevel gear set 230c-1 and meshing with the serrated plate 120b. The bevel gear set 230c-1 is used to drive the pulley set to rotate when rotating, and the transmission gear 230c-2 is used to drive the bevel gear set 230c-1 to rotate when rotating.

[0062] In this embodiment, a connecting member (not shown in the figure) is connected between the transmission gear 230c-2 and the bevel gear set 230c-1. The connecting member includes a ratchet connecting seat with a ratchet groove on its side wall and a ratchet located in the ratchet groove and having a plurality of elastic pawls along the circumferential direction. It is used to prevent the transmission gear 230c-2 from reversing when the arc-shaped steel tile is initially expanded by the extrusion of high-temperature molten steel, driving the multi-dimensional vibration member 220 to work through the transmission member 230c, so that the dynamic deformation matrix 100 vibrates in advance, resulting in an unstable state between the molten steel and the inner wall of the arc-shaped steel tile, thus affecting the uniformity of the surface when the embryo shell is formed.

[0063] In this embodiment, the specific working process is as follows: When the steel embryo cools and shrinks and multiple arc-shaped steel tiles move in contraction, the movement of the serrated plate 120b drives the transmission gear 230c-2 to rotate. When the transmission gear 230c-2 rotates, it drives the bevel gear set 230c-1 to rotate. When the bevel gear set 230c-1 rotates, it drives the pulley set to rotate, thereby driving the first gear 230a to rotate. When the first gear 230a rotates, it drives two second gears 230b to rotate. When the two second gears 230b rotate, they drive two second pulleys to rotate. When the two second pulleys rotate, they drive two first pulleys to rotate, thereby driving two rotating columns 220a to rotate. And the rotating columns 220a continue to rotate for a period of time under their own inertial force. Thus, through the cooperation of the first elastic bump 220b and the second elastic bump 220c with the first arc-shaped bump 210b and the second arc-shaped bump 210c respectively, the vibration box 210 generates multi-dimensional vibrations in the longitudinal and transverse directions, thereby reducing the adhesion force between the embryo shell and the inner wall of the arc-shaped steel tile, which is more conducive to subsequent drawing and discharging of the billet. During this process, the greater the amount of shrinkage of the arc-shaped copper tile, the greater the rotation angle of the transmission gear 230c-2, the higher the rotation speed of the rotating column 220a, and the synchronous increase in the vibration frequency, ensuring that the vibration intensity always adapts to the current solidification stage, and achieving zero-delay response through mechanical linkage, avoiding transverse cracks on the surface of the steel embryo due to vibration lag.

[0064] Embodiment 4

[0065] On the basis of Embodiment 3, referring to Figures 1-7, the gradient cooling mechanism 300 includes a high-level water tank 310 installed on one side of the outer housing 110, a spiral shunt pipe 320 with one end communicating with the bottom of the high-level water tank 310 and wound around the side wall of the outer housing 110, a return water tank 330 located on top of the vibration box 210, and a diversion assembly 340 that is drivingly connected to the rotating column 220a and guides the water in the return water tank 330 back into the high-level water tank 310 during operation. The high-level water tank 310 is used to store cooling water and provides potential energy at a high level for the cooling water. The spiral shunt pipe 320 is used to divide the cooling water flow, so as to uniformly cool down the dynamically deformed substrate 100. The return water tank 330 is used to collect the cooling water in the spiral shunt pipe 320 for easy reuse. The diversion assembly 340 is used to reintroduce the water in the return water tank 330 into the high-level water tank 310, thereby realizing water circulation.

[0066] In this embodiment, referring to Figures 1-4 , the inner wall of the outer housing 110 has a cooling cavity 110b for temporarily storing cooling water to cool down the arc-shaped steel tiles. The bottom of the cooling cavity 110b has a return pipe 110b-1 with the other end communicating with the return water tank 330 for guiding the water in the cooling cavity 110b into the return water tank 330.

[0067] Referring to Figures 1-4 , the spiral shunt pipe 320 is wound around the side wall of the outer housing 110 in a double-headed reverse spiral. The left-handed pipe generates a counterclockwise rotating eddy current, and the right-handed pipe generates a clockwise rotating eddy current. The two eddy currents form a shear layer at the intersection, causing the fluid microclusters to collide violently. The reverse swirl cancels the circumferential velocity accumulation caused by the single-direction spiral, resulting in a higher uniformity of the velocity distribution. The double-rotation flow channel reduces the circumferential temperature difference of the arc-shaped copper tile, effectively preventing local overheating. At the same time, the direction of the centrifugal force generated by the reverse eddy current alternates, making it more difficult for impurities in the water to deposit, thereby avoiding blockage inside the spiral shunt pipe 320 and giving it a certain self-cleaning effect. The side wall of the spiral shunt pipe 320 is evenly distributed with a plurality of conical spray holes extending into the cooling cavity 110b for spraying the cooling water in the spiral shunt pipe 320 into the cooling cavity 110b.

[0068] In this embodiment, referring to Figures 1-7 , the outer side wall of the vibration box 210 has a third pulley 220a-1 whose side wall is connected to one of the rotating columns 220a through a rotating shaft. When the rotating column 220a rotates to drive it to rotate, it drives the fourth pulley 340b-1 to rotate.

[0069] Referring to Figures 1-7, the diversion assembly 340 includes a diversion pipe 340a with one end communicating with the bottom of the return tank 330 and the other end communicating with the top of the high-level water tank 310, and a booster impeller 340b located inside the diversion pipe 340a and having a fourth pulley 340b-1 connected to the rotating shaft. The fourth pulley 340b-1 is connected to the third pulley 220a-1 through a belt. When the booster impeller 340b rotates, the diversion pipe 340a is used to introduce the water collected inside the return tank 330 into the high-level water tank 310. The booster impeller 340b is used to re-introduce the water in the return tank 330 into the high-level water tank 310 through the diversion pipe 340a when rotating. The fourth pulley 340b-1 is used to drive the booster impeller 340b to rotate when rotating. At the same time, the rotation speed of the booster impeller 340b is synchronously adjusted by changing the rotation speed of the rotating column 220a, so as to adjust the speed at which the water inside the return tank 330 is returned to the high-level water tank 310, thereby changing the water level inside the high-level water tank 310 and the water pressure at the bottom of the high-level water tank 310, so as to adjust the speed at which the cooling water is sprayed out through the spiral diversion pipe 320, and further adaptively adjust the cooling speed.

[0070] In this embodiment, the specific working process is as follows: The cooling water in the high-level water tank 310 enters the spiral diversion pipe 320 under the action of its own potential energy, and then is sprayed into the cooling cavity 110b through the conical spray holes to cool the arc-shaped steel tiles, thereby playing a role in cooling the steel billet. The water after heat exchange in the cooling cavity 110b enters the return tank 330 through the return pipe 110b-1. At this time, since the rotation of the rotating column 220a drives the rotation of the third pulley 220a-1, the rotation of the third pulley 220a-1 drives the rotation of the fourth pulley 340b-1, and the rotation of the fourth pulley 340b-1 drives the booster impeller 340b to rotate, so as to pump the water in the return tank 330 into the high-level water tank 310 through the diversion pipe 340a, thereby realizing the circulation of the cooling water. During this process, the rotation speed of the booster impeller 340b is positively correlated with the vibration frequency, and the rotation speed of the rotating column 220a adaptively adjusts the speed at which the water in the return tank 330 is pumped into the high-level water tank 310. When vibrating at a high frequency, the circulation flow rate of the cooling water speeds up to prevent local overheating. When vibrating at a low frequency, the circulation flow rate of the cooling water slows down to avoid the billet shell from being overcooled.

[0071] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way. The reason for not exhaustively describing the situations of these combinations in this specification is only to save space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A mold for continuous casting, characterized in that, include: A dynamic deformation matrix (100) having open structures at both ends and used for injecting molten steel for crystallization, wherein the dynamic deformation matrix (100) has a first state when the molten steel is not solidified and a second state when the molten steel is solidified, gradually shrinking inwards to keep in contact with the embryo shell; A multi-dimensional vibration mechanism (200) is mounted on the dynamic deformation base (100), wherein when the dynamic deformation base (100) is switched to the second state, the multi-dimensional vibration mechanism is automatically driven to start working, and the dynamic deformation base (100) is vibrated at multiple angles; A gradient cooling mechanism (300) acts on the dynamic deformation base (100) and cools the inner wall of the dynamic deformation base (100) through circulating cooling water when in operation, wherein the flow rate of the circulating cooling water is automatically adjusted when the multi-dimensional vibration mechanism (200) is in operation.

2. The mold for continuous casting according to claim 1, characterized in that, The dynamic deformation matrix (100) comprises an outer shell (110) whose inner wall is provided with a plurality of limiting protrusions (110a) along the circumferential direction and whose upper and lower ends are open structures, a plurality of arc-shaped steel tiles located inside the outer shell (110) and whose outer wall has dovetail grooves (120a), and memory alloy compensation sheets (130) located on both sides of the arc-shaped steel tiles, wherein the limiting protrusions (110a) extend into the dovetail grooves (120a).

3. The mold for continuous casting according to claim 2, characterized in that, The multi-dimensional vibration mechanism (200) comprises a vibration box (210) located at the bottom of the outer shell (110) and having a through groove (210a) in the middle, a multi-dimensional vibration member (220) located inside the vibration box (210), and a transmission assembly (230) having one end transmission-connected to the arc-shaped steel tile and the other end transmission-connected to the multi-dimensional vibration member (220).

4. A mold for continuous casting according to claim 3, characterized in that, The inner wall top and both sides of the vibration box (210) are provided with a plurality of first arc-shaped protrusions (210b), and the rear side wall is provided with a second arc-shaped protrusion (210c), and the inner wall bottom of the vibration box (210) is provided with a first mounting plate (210e) on both sides; The multi-dimensional vibration component (220) includes a rotating column (220a) rotatably mounted on the side wall of the first mounting plate (210e), a first elastic protrusion (220b) located on the circumferential side wall of the rotating column (220a) and corresponding to the plurality of first arc-shaped protrusions (210b), and a second elastic protrusion (220c) located at the end of the rotating column (220a) and corresponding to the second arc-shaped protrusion (210c).

5. A mold for continuous casting according to claim 4, characterized in that, The bottom of the inner wall of the vibration box (210) is provided with a second mounting plate (210d); The side wall of the first mounting plate (210e) has a first pulley connected to the side wall of the rotating column (220a) via a rotating shaft; The transmission component (230) includes a first gear (230a) mounted on the side wall of the second mounting plate (210d), two second gears (230b) mounted at both ends of the side wall of the second mounting plate (210d) and meshing with the first gear (230a), and a transmission member (230c) with one end in transmission connection with the sector steel tile (120) and the other end in transmission connection with the first gear (230a). The side wall of the second gear (230b) has a second pulley connected to the first pulley by a belt.

6. A mold for continuous casting according to claim 5, characterized in that, The side wall of the first gear (230a) has a pulley set; The bottom of one of the arc-shaped steel tiles has a serrated plate (120b); The transmission member (230c) includes a bevel gear set (230c-1) mounted on the top of the vibration box (210) and having one end in transmission connection with the pulley set, and a transmission gear (230c-2) located at the other end of the bevel gear set (230c-1) and meshing with the serrated plate (120b).

7. A mold for continuous casting according to claim 6, characterized in that, A connecting member is connected between the transmission gear (230c-2) and the bevel gear set (230c-1). The connecting member includes a ratchet connecting seat with a ratchet groove on its side wall and a ratchet located in the ratchet groove and having a plurality of elastic pawls along the circumferential direction.

8. A mold for continuous casting according to claim 4, characterized in that, The gradient cooling mechanism (300) includes a high-level water tank (310) mounted on one side of the outer shell (110), a spiral shunt pipe (320) with one end connected to the bottom of the high-level water tank (310) and wound around the side wall of the outer shell (110), a return tank (330) located on the top of the vibration box (210), and a diversion component (340) in transmission connection with the rotating column (220a) and guiding the water in the return tank (330) back into the high-level water tank (310) during operation.

9. A mold for continuous casting according to claim 8, characterized in that, The inner wall of the outer shell (110) has a cooling cavity (110b), and the bottom of the cooling cavity (110b) has a return pipe (110b-1) with the other end connected to the return tank (330); The spiral shunt pipe (320) is wound around the side wall of the outer shell (110) in a double-headed reverse spiral manner, and a plurality of tapered spray holes extending into the cooling cavity (110b) are evenly distributed on the side wall of the spiral shunt pipe (320).

10. A mold for continuous casting according to claim 8, characterized in that, The outer side wall of the vibration box (210) has a third pulley (220a-1) whose side wall is connected to one of the rotating columns (220a) by a rotating shaft; The diversion component (340) includes a diversion pipe (340a) with one end connected to the bottom of the return tank (330) and the other end connected to the top of the high-level water tank (310), and a booster impeller (340b) located in the diversion pipe (340a) and having a fourth pulley (340b-1) connected to its rotating shaft. The fourth pulley (340b-1) is connected to the third pulley (220a-1) by a belt.

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