Cast rolling device capable of reducing edge cracks of aluminum alloy cast rolling plate

Abstract

The invention relates to the technical field of cast-rolling forming, in particular to a cast-rolling device capable of reducing edge cracks of an aluminum alloy cast-rolling plate. The uniform heat dissipation assembly is arranged in the casting roller and comprises a plurality of first heat conduction partition plates and two second heat conduction partition plates located at the two ends of the first heat conduction partition plates. The ends, corresponding to the positions of the through holes, of the first thermal expansion block and the second thermal expansion block are bent, openings of the through holes in the middles of the first thermal expansion block and the second thermal expansion block are enlarged in the presence of the adjusting seams, and due to the fact that the pressure of cooling liquid is constant, the larger the openings of the through holes are, the larger the flow of the cooling liquid is, and the better the heat dissipation effect is; therefore, the purpose of adjusting local heat dissipation by self-adaptively adjusting the flow of the cooling liquid according to the feedback of the local temperature on the casting roller is achieved, and the problems of non-uniform structure properties, edge cracks, plate shape defects and the like caused by inconsistent cooling capacity of the casting roller are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cast-rolling forming, in particular to a cast-rolling device capable of reducing edge cracks of aluminum alloy cast-rolling plates. Background Art

[0002] Twin-roll casting technology has the technical advantages of small investment scale, short construction period, low production cost, short process and low energy consumption. Compared with steel casting technology, non-ferrous metal casting and rolling technology such as aluminum and magnesium is more mature and more industrialized. Taking aluminum as an example, industrial casting and rolling production of 1 series, 3 series, 8 series, and some alloys in 5 series and 6 series has been achieved. Therefore, with the advancement of green and sustainable development, twin-roll casting and rolling technology has become an internationally recognized key development direction in the future, and has shown outstanding advantages in the solid-liquid casting and rolling of heterogeneous metal layered composite materials.

[0003] During the twin-roll casting process of wide-width plates and strips, the heat released by the solidification of liquid metal is carried away by convection heat exchange between the circulating cooling water between the casting roll sleeve and the roll core and the inner surface of the casting roll sleeve. Due to the inconsistent cooling capacity in the direction of the plate width and over time, the temperature in the middle of the casting roll is usually high while the temperature at the ends on both sides is low, resulting in inconsistent cooling effect and temperature distribution in the direction of the plate width, which in turn causes problems such as uneven organizational properties, edge cracks, and plate shape defects.

[0004] For example, a high-speed wide-width casting and rolling equipment and method with a casting and rolling roller zone temperature control function provided by announcement number CN118403898A includes a smelting device, a casting and rolling roller, a clamping device, a shearing machine and a coiling device. The casting and rolling roller includes a roller sleeve and a roller core. The roller core includes a core roller, an axial water inlet channel, a radial water inlet channel, a roller surface circumferential cooling water channel, a roller surface axial cooling water channel, a radial water outlet channel and an axial water outlet channel; the roller core is arranged in the roller sleeve, and the roller core is divided into N cooling sections along the axial direction, and each cooling section is provided with Mi groups of radial water inlet channels. By setting a main control flow component and an auxiliary control flow component, and by means of the separate control of the main control flow component and multiple auxiliary control flow components, the cooling capacity of the casting and rolling roller can be improved and the zone temperature control can be realized, the casting and rolling speed can be significantly improved, the castable and rolling alloy grades can be expanded, the solidification point offset control of the solid-liquid casting and rolling composite asymmetric heat and mass transfer process can be met, and the uniformity of the organizational performance can be significantly improved.

[0005] The announcement number CN111185580A provides a casting roll with segmented adjustment of cooling water flow, wherein a water inlet channel I is opened in the center of the roll core, and more than three water return channels I, more than three water inlet channels II and more than three water return channels II are opened uniformly on the same circumference around the water inlet channel I; the closed ends of the water inlet channel I and each water return channel I are located at the front end of the rear edge of the roll core; the closed ends of each water inlet channel II and water return channel II are located at the end of the rear edge of the roll core; in the middle of the roll core, at least three water inlet channels I connected to the water inlet channel I and more than three water return channels I connected to the water return channel I are opened on the section without water grooves every two or more water grooves; at the front and rear edges of the roll core, at least three water inlet channels II connected to the water inlet channel II and more than three water return channels II connected to the water return channel II are opened on the section without water grooves every two or more water grooves. The invention can adjust the cooling of the two sides and the middle separately, has good cooling effect, and reduces the occurrence of large cracks on the casting edge.

[0006] However, when the above technology is actually used, although segmented cooling is achieved, it cannot adaptively adjust the cooling degree according to the temperature distribution of the rolling mill rollers, and the return water is not processed, so that the high-temperature return water will transfer the temperature to the water inlet channel, resulting in poor heat dissipation effect and thus causing edge cracks in the cast-rolled plate. Summary of the invention

[0007] The purpose of the present invention is to provide a casting and rolling device that can reduce edge cracks of aluminum alloy cast and rolled plates, so as to solve the problem that the cooling degree cannot be adaptively adjusted according to the temperature distribution of the rolling rollers, and the return water is not processed, so that the high-temperature return water will transfer the temperature to the water inlet channel, resulting in poor heat dissipation effect and thus causing edge cracks of the cast and rolled plates.

[0008] To achieve the above object, the present invention provides the following technical solution: a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet, comprising:

[0009] Casting rolls;

[0010] A uniform heat dissipation component is arranged inside the casting roll, the uniform heat dissipation component comprises a plurality of first heat-conducting baffles and two second heat-conducting baffles located at both ends of the plurality of first heat-conducting baffles, both ends of the first heat-conducting baffles and the middle of the second heat-conducting baffles are respectively provided with a first water-cooling heat dissipation channel and a second water-cooling heat dissipation channel which are connected, the first water-cooling heat dissipation channel and the second water-cooling heat dissipation channel are arranged in a spiral shape so that the coolant can flow in a spiral circulation along the axial direction of the casting roll, and a first outer square tube and a second outer square tube for providing the coolant are respectively fixed in the middle of the first heat-conducting baffle and the second heat-conducting baffle;

[0011] An adaptive adjustment component 1 is provided between the first water-cooled heat dissipation channel and the second water-cooled heat dissipation channel, and an adaptive adjustment component 2 is provided between the first outer square tube and the first water-cooled heat dissipation channel and between the second outer square tube and the first water-cooled heat dissipation channel respectively. The adaptive adjustment component 1 and the adaptive adjustment component 2 respectively control the degree of connection between the first water-cooled heat dissipation channel and the second water-cooled heat dissipation channel, between the first outer square tube and the first water-cooled heat dissipation channel, and between the second outer square tube and the first water-cooled heat dissipation channel according to temperature changes, so as to adaptively adjust the cooling water flow rate to achieve the purpose of uniform cooling.

[0012] Preferably, the inner wall of the first outer square tube is fixedly connected to the first inner square tube via a bracket, the inner wall of the second outer square tube is fixedly connected to the second inner square tube via a bracket, the cross-section of the second outer square tube is equal to that of the first outer square tube, and the cross-section of the first inner square tube is equal to that of the second inner square tube, so that when the first outer square tube abuts against the second outer square tube and the first inner square tube abuts against the second inner square tube, fluid channels are formed between the first outer square tube and the second outer square tube respectively.

[0013] Preferably, cooling return water collecting ports are respectively opened in the middle of the first outer square tube and the second outer square tube at the position corresponding to the second water-cooled heat dissipation channel, and the inner walls of the first outer square tube and the first inner square tube as well as the second outer square tube and the second inner square tube at the position corresponding to the cooling return water collecting port are fixedly connected with a cooling return water guide cover, so that the cooling return water inside the second water-cooled heat dissipation channel enters the interior of the cooling return water guide cover through the cooling return water collecting port.

[0014] Preferably, the end of the second heat-conducting baffle away from the position of the first heat-conducting baffle is fixedly connected to a fixed cover, the second outer square tube and the cooling return water deflector are fixedly connected to the inner wall of the fixed cover, and the second inner square tube is fixedly embedded in the middle of the fixed cover, a water inlet pipe is fixedly embedded in the middle of the fixed cover corresponding to the second position of the adaptive adjustment component, and a water outlet pipe is fixedly embedded in the middle of the fixed cover corresponding to the position of the cooling return water deflector.

[0015] Preferably, the adaptive adjustment component 1 and the adaptive adjustment component 2 each include a first thermal expansion block and a second thermal expansion block of the same size, and the first thermal expansion block and the second thermal expansion block are fixedly connected, and the first thermal expansion block and the second thermal expansion block are respectively fixedly embedded in the middle of the first outer square tube, the first heat-conducting baffle and the second heat-conducting baffle, so that the first thermal expansion block cooperates with the second thermal expansion block to control the degree of opening and closing of the connection between the first water-cooled heat dissipation channel and the second water-cooled heat dissipation channel, between the first outer square tube and the first water-cooled heat dissipation channel, and between the second outer square tube and the first water-cooled heat dissipation channel. The middle of the first thermal expansion block and the second thermal expansion block are each provided with a through hole, and the first thermal expansion block and the second thermal expansion block are respectively provided with a plurality of adjustment seams connected to the through holes in the radial direction. The expansion coefficient of the first thermal expansion block is greater than the expansion coefficient of the second thermal expansion block, so that when the temperature rises, the first thermal expansion block and the second thermal expansion block bend in the flow direction and expand the degree of opening and closing of the connection between the first water-cooled heat dissipation channel and the second water-cooled heat dissipation channel, between the first outer square tube and the first water-cooled heat dissipation channel, and between the second outer square tube and the first water-cooled heat dissipation channel.

[0016] Preferably, sealing gaskets are provided at one end of the second inner square tube corresponding to the position of the first inner square tube and at both ends of the first inner square tube, respectively, so that a seal is formed at the joints when the second inner square tube and the first inner square tube and multiple first inner square tubes are abutted, and the inner wall of the second inner square tube is fixedly connected to a support column through a bracket.

[0017] Preferably, it also includes an air-cooled heat dissipation component for assisting the heat dissipation of the coolant, the air-cooled heat dissipation component includes a heat pipe fixedly connected to the middle of the first heat-conducting baffle and the second heat-conducting baffle, a plurality of the heat pipes are respectively fixedly passed through the first outer square tube and the second outer square tube and extend to the interior of the first inner square tube and the second inner square tube, and the surfaces of the heat pipes corresponding to the inner wall positions of the first inner square tube and the second inner square tube are fixedly connected with heat dissipation fins.

[0018] Preferably, a heat dissipation duct is fixedly embedded in the middle of the second heat-conducting baffle and the first heat-conducting baffle, an air outlet duct is fixedly connected to the middle of the heat dissipation duct, and the air outlet duct is located between the two first heat-conducting baffles in the middle, the air outlet duct is located inside the first inner square tube, and a plurality of air outlet holes are provided on the surface of the air outlet duct, the interior of the heat dissipation duct is respectively connected with the interior of the fixed cover and the air outlet duct, and an air inlet duct connected with the interior of the heat dissipation duct is fixedly embedded at one end of the fixed cover, so that cold air enters the inner wall of the fixed cover through the air inlet duct, flows inside the heat dissipation duct to dissipate heat, and then blows from the middle position of the plurality of first inner square tubes to both ends through the air outlet duct, and drives the heat on the heat dissipation fins.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention bends one end of the first thermal expansion block and the second thermal expansion block corresponding to the through hole position, and in the presence of the adjustment seam, the opening of the through hole in the middle of the first thermal expansion block and the second thermal expansion block is enlarged. Due to the constant pressure coolant, the larger the opening of the through hole, the larger the flow of the coolant, and the better the heat dissipation effect, thereby achieving the purpose of local heat dissipation adjustment by adaptively adjusting the coolant flow according to the feedback of the local temperature on the casting roll, avoiding the inconsistent cooling capacity of the casting roll, and then causing problems such as uneven organizational performance, edge cracks, and plate shape defects;

[0021] 2. The present invention also achieves the purpose of air cooling and heat dissipation of the casting roller by introducing an air inlet pipe into the air inlet pipe, and the cold air enters the interior of the heat dissipation air duct through the air inlet pipe, and passes through multiple first heat-conducting baffles in the interior of the heat dissipation air duct, and enters the middle position of the first inner square tube through the air outlet pipe at the middle position of the multiple first heat-conducting baffles, and blows out to both ends, so that the cold air brings out the heat in the middle of the first heat-conducting baffle and the inside of the first inner square tube, and at the same time, the heat pipes arranged in the middle of the first heat-conducting baffle and the second heat-conducting baffle are used to guide the heat in the middle of the casting roller, the first heat-conducting baffle and the second heat-conducting baffle to the heat dissipation fins, and air cooling and heat dissipation are performed to improve the air cooling and heat dissipation effect, wherein the heat pipes do not affect the flow of coolant in the first water-cooling heat dissipation channel and the second water-cooling heat dissipation channel, and at the same time, the coolant will also have a heat dissipation effect on the heat pipes, further improving the heat dissipation effect on the casting roller, and the heat dissipation effect on the casting roller is greatly improved by combining air cooling, coolant heat dissipation and conduction heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plates according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the overall structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plates according to the present invention;

[0024] Figure 3 The present invention is a partial explosion of the overall structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plates Figure 1 ;

[0025] Figure 4 The present invention is a partial explosion of the overall structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plates Figure 2 ;

[0026] Figure 5 It is a schematic structural diagram of a first outer square tube and a first inner square tube of a casting and rolling device capable of reducing edge cracks of an aluminum alloy cast and rolled plate according to the present invention;

[0027] Figure 6The first heat-conducting baffle structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plate according to the present invention is schematically shown. Figure 1 ;

[0028] Figure 7 The first heat-conducting baffle structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plate according to the present invention is schematically shown. Figure 2 ;

[0029] Figure 8 The first heat-conducting baffle structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plate according to the present invention is schematically shown. Figure 3 ;

[0030] Fig. 9 The first heat-conducting baffle structure of a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plate according to the present invention is schematically shown. Figure 4 ;

[0031] Fig.10 For the present invention Fig. 9 A cross-sectional view of the structure of the first heat-conducting baffle;

[0032] Fig.11 The present invention is a schematic structural diagram of a self-adaptive adjustment component 1 and a self-adaptive adjustment component 2 of a casting and rolling device capable of reducing edge cracks of an aluminum alloy cast and rolled plate.

[0033] In the figure: 1. Casting roll;

[0034] 2. Uniform heat dissipation assembly; 201. First heat-conducting baffle; 202. Second heat-conducting baffle; 203. First water-cooling heat dissipation channel; 204. Second water-cooling heat dissipation channel; 205. First outer square tube; 206. First inner square tube; 207. Second outer square tube; 208. Second inner square tube; 209. Cooling return water manifold; 210. Cooling return water guide cover; 211. Fixed cover; 212. Water inlet pipe; 213. Water outlet pipe;

[0035] 3. Adaptive adjustment component 1; 4. Adaptive adjustment component 2; 401. First thermal expansion block; 402. Second thermal expansion block; 403. Through hole; 404. Adjustment slit;

[0036] 5. Air-cooled heat dissipation component; 501. heat pipe; 502. heat dissipation fin; 503. heat dissipation air duct; 504. air outlet duct; 505. air inlet duct;

[0037] 6. Support column. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-11 The present invention provides a technical solution: a casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled plates, comprising:

[0040] Casting roll 1;

[0041] The uniform heat dissipation component 2 is arranged inside the casting roll 1, and the uniform heat dissipation component 2 includes a plurality of first heat-conducting baffles 201 and two second heat-conducting baffles 202 located at both ends of the plurality of first heat-conducting baffles 201. The two ends of the first heat-conducting baffle 201 and the middle of the second heat-conducting baffle 202 are respectively provided with a first water-cooling heat dissipation channel 203 and a second water-cooling heat dissipation channel 204 that are connected. The first water-cooling heat dissipation channel 203 and the second water-cooling heat dissipation channel 204 are arranged in a spiral shape so that the coolant can circulate along the axial spiral of the casting roll 1. The middle of the first heat-conducting baffle 201 and the second heat-conducting baffle 202 are respectively fixed with a first outer square tube 203 for providing the coolant. 5 and the second outer square tube 207, the inner wall of the first outer square tube 205 is fixedly mounted with the first inner square tube 206 through a bracket, the inner wall of the second outer square tube 207 is fixedly mounted with the second inner square tube 208 through a bracket, the cross section of the second outer square tube 207 is equal to the cross section of the first outer square tube 205, the cross section of the first inner square tube 206 is equal to the cross section of the second inner square tube 208, so that when the first outer square tube 205 and the second outer square tube 207 are abutted and matched with the first inner square tube 206 and the second inner square tube 208, the first outer square tube 205 and the second outer square tube 207 respectively form a fluid channel with the first inner square tube 206 and the second inner square tube 208, and the first outer square tube A cooling return water manifold 209 is respectively provided at the middle of the position of the second water-cooling heat dissipation channel 204 corresponding to the first outer square tube 205 and the second inner square tube 207. A cooling return water manifold 210 is fixedly installed on the inner wall of the first outer square tube 205 and the first inner square tube 206 as well as the second outer square tube 207 and the second inner square tube 208 corresponding to the position of the cooling return water manifold 209, so that the cooling return water inside the second water-cooling heat dissipation channel 204 enters the interior of the cooling return water manifold 210 through the cooling return water manifold 209. A fixed cover 211 is fixedly installed at one end of the second heat-conducting baffle 202 away from the position of the first heat-conducting baffle 201. The second outer square tube 207 and the cooling return water manifold 210 are fixedly installed. The fixing cover 211 is fixedly installed on the inner wall of the fixing cover 211, and the second inner square tube 208 is fixedly embedded in the middle of the fixing cover 211, and the middle of the fixing cover 211 corresponding to the position of the adaptive adjustment component 24 is fixedly embedded with an inlet pipe 212, and the middle of the fixing cover 211 corresponding to the position of the cooling return water guide cover 210 is fixedly embedded with an outlet pipe 213, and one end of the second inner square tube 208 corresponding to the position of the first inner square tube 206 and both ends of the first inner square tube 206 are respectively provided with sealing gaskets, so that the second inner square tube 208 and the first inner square tube 206 and the plurality of first inner square tubes 206 are abutted to form a seal at the joint, and the inner wall of the second inner square tube 208 is fixedly installed with a support column 6 through a bracket;

[0042] When the above structure is in use, the water inlet pipe 212 is connected to the coolant inlet, and the water outlet pipe 213 is connected to the coolant outlet, and the coolant is injected into the water inlet pipe 212 at a constant pressure. The coolant flows through the fluid channel formed between the first outer square tube 205 and the second outer square tube 207 and the first inner square tube 206 and the second inner square tube 208, so that the coolant enters the first water cooling medium in the first heat-conducting baffle 201 and the second heat-conducting baffle 202 through the second outer square tube 207 and the adaptive adjustment component 24 on the first outer square tube 205. The cooling water flows into the heat dissipation channel 203 and spirally flows toward the surface of the casting roller 1, then enters the second water-cooling heat dissipation channel 204 through the adaptive adjustment component 3, and spirally flows toward the position of the first outer square tube 205, so that the purpose of uniform heat dissipation of the casting roller 1 can be achieved through multiple first heat-conducting baffles 201. Finally, the cooling return water enters the interior of the cooling return water guide cover 210 through the cooling return water collecting port 209, and is guided by the cooling return water guide cover 210 and discharged to the coolant outlet through the outlet pipe 213.

[0043] An adaptive adjustment component 13 is provided between the first water-cooled heat dissipation channel 203 and the second water-cooled heat dissipation channel 204, and an adaptive adjustment component 24 is provided between the first outer square tube 205 and the first water-cooled heat dissipation channel 203 and between the second outer square tube 207 and the first water-cooled heat dissipation channel 203, respectively. The adaptive adjustment component 13 and the adaptive adjustment component 24 respectively control the degree of connection between the first water-cooled heat dissipation channel 203 and the second water-cooled heat dissipation channel 204, between the first outer square tube 205 and the first water-cooled heat dissipation channel 203, and between the second outer square tube 207 and the first water-cooled heat dissipation channel 203 according to temperature changes, so as to adaptively adjust the cooling water flow rate to achieve the purpose of uniform cooling. The adaptive adjustment component 13 and the adaptive adjustment component 24 respectively include a first thermal expansion block 401 and a second thermal expansion block 402 of the same size, and the first thermal expansion block 401 and the second thermal expansion block 402 are fixedly installed, and the first thermal expansion block 401 and the second thermal expansion block 402 are respectively fixedly embedded in the first outer square tube 205 and the first heat conductive baffle. 201 and the middle part of the second heat-conducting baffle 202, so that the first heat expansion block 401 cooperates with the second heat expansion block 402 to control the opening and closing degree between the first water-cooling heat dissipation channel 203 and the second water-cooling heat dissipation channel 204, between the first outer square tube 205 and the first water-cooling heat dissipation channel 203, and between the second outer square tube 207 and the first water-cooling heat dissipation channel 203. The middle parts of the first heat expansion block 401 and the second heat expansion block 402 are both provided with through holes 403, and the first heat expansion block 401 and the second heat expansion block 402 are A plurality of adjustment slits 404 connected to the through holes 403 are respectively provided in the radial direction. The expansion coefficient of the first thermal expansion block 401 is greater than the expansion coefficient of the second thermal expansion block 402, so that when the temperature rises, the first thermal expansion block 401 and the second thermal expansion block 402 bend in the flow direction and expand the opening degree of the connection between the first water-cooling heat dissipation channel 203 and the second water-cooling heat dissipation channel 204, between the first outer square tube 205 and the first water-cooling heat dissipation channel 203, and between the second outer square tube 207 and the first water-cooling heat dissipation channel 203;

[0044] When the above structure is in use, when the temperature at a local position of the casting roller 1 rises, the temperature of the adaptive adjustment component 1 3 and the adaptive adjustment component 2 4 at that position will rise, so that one end of the first thermal expansion block 401 and the second thermal expansion block 402 corresponding to the position of the through hole 403 will bend, so that the opening of the through hole 403 in the middle of the first thermal expansion block 401 and the second thermal expansion block 402 will increase. Since the coolant is injected into the water inlet pipe 212 at a constant pressure, the larger the opening of the through hole 403, the larger the flow rate of the coolant, and the better the heat dissipation effect, thereby achieving the purpose of local heat dissipation regulation by adaptively adjusting the coolant flow rate according to the feedback of the local temperature on the casting roller 1, avoiding inconsistent cooling capacity of the casting roller 1, and then causing problems such as uneven organizational performance, edge cracks, and plate shape defects.

[0045] The air-cooled heat dissipation component 5 is also included for assisting the heat dissipation of the coolant. The air-cooled heat dissipation component 5 includes a heat pipe 501 fixedly installed in the middle of the first heat-conducting baffle 201 and the second heat-conducting baffle 202. The plurality of heat pipes 501 are respectively fixedly penetrated through the first outer square tube 205 and the second outer square tube 207 and extend to the inside of the first inner square tube 206 and the second inner square tube 208. The heat pipe 501 is fixedly installed with a heat dissipation fin 502 on the surface of the heat pipe 501 corresponding to the inner wall position of the first inner square tube 206 and the second inner square tube 208. The middle of the second heat-conducting baffle 202 and the first heat-conducting baffle 201 are both fixedly embedded with a heat dissipation air duct 503, and the middle of the heat dissipation air duct 503 is fixedly installed with an air outlet duct 504 , and the air outlet duct 504 is located between the two first heat-conducting baffles 201 in the middle, the air outlet duct 504 is located inside the first inner square tube 206, and a plurality of air outlet holes are arranged on the surface of the air outlet duct 504, the interior of the heat dissipation duct 503 is respectively connected with the interior of the fixed cover 211 and the air outlet duct 504, and an air inlet duct 505 connected with the interior of the heat dissipation duct 503 is fixedly embedded at one end of the fixed cover 211, so that the cold air enters the inner wall of the fixed cover 211 through the air inlet duct 505, flows inside the heat dissipation duct 503 to dissipate heat, and then blows from the middle position of the plurality of first inner square tubes 206 to both ends through the air outlet duct 504, and drives the heat on the heat dissipation fins 502;

[0046] When the above structure is in use, cold air enters the interior of the heat dissipation air duct 503 from the air inlet pipe 505, and passes through multiple first heat-conducting baffles 201, and then enters the middle position of the first inner square tube 206 through the air outlet pipe 504 at the middle position of multiple first heat-conducting baffles 201, and blows out to both ends, so that the cold air can take out the heat in the middle of the first heat-conducting baffle 201 and the inside of the first inner square tube 206, thereby achieving the purpose of air-cooling and heat dissipation of the casting roller 1. At the same time, the heat of the casting roller 1, the first heat-conducting baffle 201 and the middle of the second heat-conducting baffle 202 is guided to the heat dissipation fins 502 through the heat pipe 501, and air-cooling and heat dissipation are performed, thereby improving the air-cooling and heat dissipation effect. By combining air-cooling and heat dissipation, coolant heat dissipation and conduction heat dissipation, the heat dissipation effect of the casting roller 1 is greatly improved.

[0047] Working principle: When in use, the invention connects the water inlet pipe 212 to the coolant inlet and the water outlet pipe 213 to the coolant outlet, wherein the second outer square tube 207 is fixed to the inner wall of the fixed cover 211, and the second inner square tube 208 is fixed to the middle part of the fixed cover 211, that is to say, a fluid channel is formed between the second outer square tube 207, the second inner square tube 208 and the fixed cover 211, and the coolant flows in the fluid channel, wherein the first outer square tube 205 and the second outer square tube 207 are abutted, and the first inner square tube 206 and the second inner square tube 208 are abutted, thus forming a fluid channel for the flow of coolant between the first outer square tube 205 and the second outer tube 207 and the first inner square tube 206 and the second inner square tube 208, wherein the coolant is injected into the water inlet pipe 212 at a constant pressure, so that the coolant passes through the second outer square tube 207 and the first outer square tube 205 on the inner wall. The adaptive adjustment component 24 enters the first water-cooled heat dissipation channel 203 in the first heat-conducting baffle 201 and the second heat-conducting baffle 202, wherein the first heat-conducting baffle 201 is formed by integral molding and pressing, and the first water-cooled heat dissipation channel 203 and the second water-cooled heat dissipation channel 204 are respectively located at the two ends of the first heat-conducting baffle 201. When the coolant enters the interior of the first water-cooled heat dissipation channel 203, it will spirally flow toward the surface of the casting roller 1, and then enter the second water-cooled heat dissipation channel 204 through the adaptive adjustment component 3, and flow in a spiral shape toward the position of the first outer square tube 205, so that the purpose of uniformly dissipating heat to the casting roller 1 can be achieved through multiple first heat-conducting baffles 201. Finally, the cooling return water enters the interior of the cooling return water guide cover 210 through the cooling return water manifold 209, and is guided by the cooling return water guide cover 210 and discharged to the coolant outlet through the outlet pipe 213;

[0048] The first water-cooled heat dissipation channel 203 and the second water-cooled heat dissipation channel 204, as well as the first heat-conducting baffle 201 and the second heat-conducting baffle 202 are provided, so that the first heat-conducting baffle 201 and the second heat-conducting baffle 202 can conduct heat to the casting roller 1, and the cooling liquid flows in the first water-cooled heat dissipation channel 203 and the second water-cooled heat dissipation channel 204, so that the first heat-conducting baffle 201 and the second heat-conducting baffle 202 are evenly cooled, and the casting roller 1 is also cooled. The cooling liquid stays in the casting roller 1 for a long time and in a large area, thereby improving the cooling effect of liquid cooling, and the cooling return water is collected by the cooling return water guide cover 210, reducing the heat exchange between the cooling return water and the newly entered cooling liquid in the casting roller 1, thereby improving the cooling effect of the cooling liquid;

[0049] By setting the adaptive adjustment component 1 3 and the adaptive adjustment component 2 4, when the temperature of the local position of the casting roller 1 rises, the high temperature will be transmitted through the transmission of the coolant and the first heat-conducting baffle 201 and the second heat-conducting baffle 202, so that the temperature of the adaptive adjustment component 1 3 and the adaptive adjustment component 2 4 at the position rises, and when the temperature of the adaptive adjustment component 1 3 and the adaptive adjustment component 2 4 rises, the ends of the first thermal expansion block 401 and the second thermal expansion block 402 corresponding to the position of the through hole 403 will be bent, and under the existence of the adjustment seam 404, the openings of the through holes 403 in the middle of the first thermal expansion block 401 and the second thermal expansion block 402 will be enlarged. Since the coolant is injected into the water inlet pipe 212 at a constant pressure, the larger the opening of the through hole 403, the larger the flow rate of the coolant, and the better the heat dissipation effect, thereby achieving the purpose of local heat dissipation regulation by adaptively adjusting the coolant flow rate according to the feedback of the local temperature on the casting roller 1, avoiding the inconsistent cooling capacity of the casting roller 1, and then causing problems such as uneven organizational performance, edge cracks, and plate shape defects;

[0050] By connecting the air inlet pipe 505 to the blower, the cold air enters the interior of the heat dissipation air pipe 503 through the air inlet pipe 505, and passes through the plurality of first heat-conducting baffles 201 in the interior of the heat dissipation air pipe 503, and enters the middle position of the first inner square tube 206 through the air outlet pipe 504 at the middle position of the plurality of first heat-conducting baffles 201, and blows out to both ends, so that the cold air takes out the heat in the middle of the first heat-conducting baffle 201 and the interior of the first inner square tube 206, thereby achieving the purpose of air cooling and heat dissipation of the casting roll 1. At the same time, by setting the first heat-conducting baffle 201 and the second heat-conducting baffle 2 The heat pipe 501 in the middle of 02 guides the heat of the casting roller 1, the first heat-conducting baffle 201 and the middle of the second heat-conducting baffle 202 to the cooling fin 502, and performs air cooling to improve the air cooling effect, wherein the heat pipe 501 does not affect the flow of coolant inside the first water-cooling heat dissipation channel 203 and the second water-cooling heat dissipation channel 204, and the coolant also has a heat dissipation effect on the heat pipe 501, further improving the heat dissipation effect on the casting roller 1, and the heat dissipation effect on the casting roller 1 is greatly improved by combining air cooling, coolant cooling and conduction cooling.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet, characterized in that: include: Casting roll (1); A uniform heat dissipation component (2) is arranged inside a casting roll (1), the uniform heat dissipation component (2) comprising a plurality of first heat-conducting baffles (201) and two second heat-conducting baffles (202) located at both ends of the plurality of first heat-conducting baffles (201), both ends of the first heat-conducting baffles (201) and the middle of the second heat-conducting baffles (202) are respectively provided with a first water-cooling heat dissipation channel (203) and a second water-cooling heat dissipation channel (204) which are connected, the first water-cooling heat dissipation channel (203) and the second water-cooling heat dissipation channel (204) being arranged in a spiral shape so that the coolant flows in a spiral circulation along the axial direction of the casting roll (1), and a first outer square tube (205) and a second outer square tube (207) for providing the coolant are respectively fixedly arranged in the middle of the first heat-conducting baffle (201) and the second heat-conducting baffle (202); An adaptive adjustment component one (3) is provided between the first water-cooling heat dissipation channel (203) and the second water-cooling heat dissipation channel (204), and an adaptive adjustment component two (4) is provided between the first outer square tube (205) and the first water-cooling heat dissipation channel (203) and between the second outer square tube (207) and the first water-cooling heat dissipation channel (203), respectively. The adaptive adjustment component one (3) and the adaptive adjustment component two (4) respectively control the degree of connection between the first water-cooling heat dissipation channel (203) and the second water-cooling heat dissipation channel (204), between the first outer square tube (205) and the first water-cooling heat dissipation channel (203), and between the second outer square tube (207) and the first water-cooling heat dissipation channel (203) according to temperature changes, so as to adaptively adjust the cooling water flow rate to achieve the purpose of uniform cooling.

2. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 1, characterized in that: The inner wall of the first outer square tube (205) is fixedly connected to the first inner square tube (206) through a bracket, and the inner wall of the second outer square tube (207) is fixedly connected to the second inner square tube (208) through a bracket. The cross section of the second outer square tube (207) is equal to that of the first outer square tube (205), and the cross section of the first inner square tube (206) is equal to that of the second inner square tube (208). When the first outer square tube (205) and the second outer square tube (207) are in abutment with each other and the first inner square tube (206) and the second inner square tube (208) are in abutment with each other, a fluid channel is formed between the first outer square tube (205) and the second outer square tube (207) and the first inner square tube (206) and the second inner square tube (208) respectively.

3. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 2, characterized in that: A cooling return water collecting port (209) is respectively provided in the middle of the first outer square tube (205) and the second outer square tube (207) at a position corresponding to the second water-cooling heat dissipation channel (204); and a cooling return water guide cover (210) is fixedly connected to the inner walls of the first outer square tube (205) and the first inner square tube (206) as well as the second outer square tube (207) and the second inner square tube (208) at a position corresponding to the cooling return water collecting port (209), so that the cooling return water inside the second water-cooling heat dissipation channel (204) enters the interior of the cooling return water guide cover (210) through the cooling return water collecting port (209).

4. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 3, characterized in that: One end of the second heat-conducting baffle (202) away from the first heat-conducting baffle (201) is fixedly connected to a fixed cover (211); the second outer square tube (207) and the cooling return water guide cover (210) are fixedly connected to the inner wall of the fixed cover (211); and the second inner square tube (208) is fixedly embedded in the middle of the fixed cover (211); a water inlet pipe (212) is fixedly embedded in the middle of the fixed cover (211) corresponding to the position of the adaptive adjustment component 2 (4); and a water outlet pipe (213) is fixedly embedded in the middle of the fixed cover (211) corresponding to the position of the cooling return water guide cover (210).

5. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 4, characterized in that: The adaptive adjustment component 1 (3) and the adaptive adjustment component 2 (4) respectively include a first thermal expansion block (401) and a second thermal expansion block (402) of the same size, and the first thermal expansion block (401) and the second thermal expansion block (402) are fixedly connected, and the first thermal expansion block (401) and the second thermal expansion block (402) are respectively fixedly embedded in the middle of the first outer square tube (205), the first heat-conducting baffle (201) and the second heat-conducting baffle (202), so that the first thermal expansion block (401) cooperates with the second thermal expansion block (402) to control the first water-cooled heat dissipation channel (203) and the second water-cooled heat dissipation channel (204), the first outer square tube (205) and the first water-cooled heat dissipation channel (203), and the second outer square tube (207) and the first water-cooled heat dissipation channel (203). The first thermal expansion block (401) and the second thermal expansion block (402) are both provided with through holes (403) in the middle, and the first thermal expansion block (401) and the second thermal expansion block (402) are respectively provided with a plurality of adjustment slits (404) in radial direction and connected with the through holes (403). The expansion coefficient of the first thermal expansion block (401) is greater than the expansion coefficient of the second thermal expansion block (402), so that when the temperature rises, the first thermal expansion block (401) and the second thermal expansion block (402) bend in the flow direction and expand the opening of the connection between the first water-cooled heat dissipation channel (203) and the second water-cooled heat dissipation channel (204), between the first outer square tube (205) and the first water-cooled heat dissipation channel (203), and between the second outer square tube (207) and the first water-cooled heat dissipation channel (203).

6. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 5, characterized in that: One end of the second inner square tube (208) corresponding to the position of the first inner square tube (206) and both ends of the first inner square tube (206) are respectively provided with sealing gaskets, so that a seal is formed at the joint when the second inner square tube (208) and the first inner square tube (206) and a plurality of first inner square tubes (206) are in contact with each other, and the inner wall of the second inner square tube (208) is fixedly connected to a support column (6) via a bracket.

7. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 6, characterized in that: It also includes an air-cooled heat dissipation component (5) for assisting the heat dissipation of the coolant, the air-cooled heat dissipation component (5) including a heat pipe (501) fixedly connected to the middle of the first heat-conducting baffle (201) and the second heat-conducting baffle (202), a plurality of the heat pipes (501) respectively fixedly passing through the first outer square tube (205) and the second outer square tube (207) and extending to the inside of the first inner square tube (206) and the second inner square tube (208), and a heat dissipation fin (502) is fixedly connected to the surface of the heat pipe (501) corresponding to the inner wall position of the first inner square tube (206) and the second inner square tube (208).

8. A casting and rolling device capable of reducing edge cracks of aluminum alloy cast and rolled sheet according to claim 7, characterized in that: A heat dissipation duct (503) is fixedly embedded in the middle of the second heat-conducting baffle (202) and the first heat-conducting baffle (201); an air outlet duct (504) is fixedly connected to the middle of the heat-conducting baffle (503); the air outlet duct (504) is located between the two first heat-conducting baffles (201) in the middle; the air outlet duct (504) is located inside the first inner square tube (206); a plurality of air outlet holes are provided on the surface of the air outlet duct (504); the interior of the heat-conducting baffle (503) is respectively connected to the first inner square tube (206); The interior of the fixed cover (211) and the air outlet pipe (504) are connected, and an air inlet pipe (505) connected to the interior of the heat dissipation air pipe (503) is fixedly embedded in one end of the fixed cover (211), so that cold air enters the inner wall of the fixed cover (211) through the air inlet pipe (505), flows inside the heat dissipation air pipe (503) to dissipate heat, and then blows from the middle position of the plurality of first inner square tubes (206) to both ends through the air outlet pipe (504), thereby driving the heat on the heat dissipation fins (502).

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