A semi-continuous casting equipment for billets

Abstract

This invention discloses a semi-continuous casting equipment for billets, relating to the technical field of semi-continuous casting equipment. It includes a cooling device, a crystallizer, a worktable, and an electromagnetic stirring device. The electromagnetic stirring device improves the surface and internal quality of the billet through non-contact stirring. The cooling device adjusts the cooling intensity according to different stages of the molten metal entering the crystallizer, ensuring the billet receives appropriate cooling at different solidification stages. When the molten metal enters the crystallizer, a gentle, heat-insulating cooling method is used to ensure that the initial solidified shell in the meniscus region does not crack due to rapid cooling, improving the stability of the initial solidification stage. Then, it enters a slow cooling chamber for moderate-intensity transition cooling, gradually and uniformly thickening the solidified shell to prevent cracking from rapid temperature drops. Finally, it enters a rapid cooling chamber for forced rapid cooling, achieving rapid solidification and grain refinement, improving the internal microstructure of the billet, and enhancing its quality.

Description

Technical Field

[0001] This invention relates to the field of semi-continuous casting equipment technology, specifically a semi-continuous casting equipment for casting billets. Background Technology

[0002] Semi-continuous casting is a forming process commonly used in the production of non-ferrous metals and alloy materials. It involves introducing molten metal into a crystallizer, allowing the molten metal to gradually solidify after cooling in the crystallizer, and then continuously drawing out the solidified billet through a traction device to obtain castings with a certain length and shape. It has advantages such as high production efficiency, relatively simple equipment structure, and suitability for the preparation of large-size billets, and is widely used in the production and processing of metal materials such as aluminum alloys.

[0003] The solidification process of molten metal after entering the crystallizer is in stages, and the required cooling intensity varies at different stages. In existing semi-continuous casting equipment, the cooling intensity of the crystallizer is usually kept constant, which can easily lead to problems of insufficient or excessive cooling in certain areas. This can result in defects inside the billet, reduced billet forming stability, and lower product quality and yield. Summary of the Invention

[0004] The purpose of this invention is to provide a semi-continuous casting device for billets, so as to solve the problem in the prior art that the cooling intensity cannot be adjusted according to different cooling stages.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A workbench is included, with an electromagnetic stirring device installed on one side and a crystallizer installed on the other side. The electromagnetic stirring device slides on the crystallizer, and a cooling device is installed on one side of the crystallizer. During operation, the cooling device is first moved to be attached to the outside of the crystallizer, and molten metal is introduced into the crystallizer through a ladle. Then, the electromagnetic stirring device is moved onto the crystallizer, and the ingot head inside the crystallizer descends and passes through different parts of the cooling device, causing the molten metal to gradually solidify. Simultaneously, the electromagnetic stirring device stirs the molten metal inside the crystallizer, improving the surface and internal quality of the cast billet. Finally, the solidified cast billet is drawn out by a traction device.

[0006] The cooling device includes a slow cooling component and a support plate. A drive component is mounted on the support plate, a rapid cooling component is mounted on the drive component, and an adjustment component is mounted on the rapid cooling component. The adjustment component and the rapid cooling component are connected by a pipe, and the drive component is connected to the control system. The drive component is used to drive the rapid cooling component to move and control the opening and closing of the rapid cooling component. The slow cooling component is used to improve the stability of the solidification stage, so that the solidified shell gradually and uniformly thickens and prevents the shell from cracking when it encounters a rapid drop in temperature. The rapid cooling component is used to force rapid cooling of the molten metal to achieve rapid solidification and grain refinement. The adjustment component is used to adjust the cooling intensity of the coolant according to the temperature change of the molten metal.

[0007] The slow-cooling assembly includes an insulated water jacket, with a slow-cooling water jacket installed on one side of the insulated water jacket. The slow-cooling water jacket is mounted on the quenching assembly and connected to the quenching assembly via pipes. An opening and closing element is slidably installed inside the slow-cooling water jacket. The insulated water jacket employs a gentle cooling method to ensure that the initial solidified shell in the meniscus region does not crack due to rapid cooling. The slow-cooling water jacket uses moderate-intensity transition cooling to ensure uniform thickening of the solidified shell. The opening and closing element is used to prevent coolant leakage.

[0008] The quenching assembly includes a quenching chamber, inside which a guide plate is installed. The quenching chamber is used to force the molten metal to cool rapidly, achieving rapid solidification and grain refinement. The guide plate is used to guide the flow of the coolant.

[0009] The regulating assembly includes a dual-chamber regulating element, with a limiting element installed on one side of the dual-chamber regulating element. The dual-chamber regulating element is used to distribute the coolant ratio between the slow cooling water jacket and the rapid cooling chamber, while the limiting element is used to limit the flow rate of coolant in the slow cooling water jacket when the derrick head just passes through it, preventing over-cooling.

[0010] The insulating water jacket includes an insulating outer shell, inside which a first spiral flow channel is installed. A first connecting port is installed at one end of the first spiral flow channel, and an opening / closing element is installed within the first connecting port. A first sliding groove is provided on the first connecting port. A first water inlet pipe is installed on one side of the first spiral flow channel, and a first water outlet pipe is installed on the other side. Coolant is introduced into the first spiral flow channel through the first water inlet pipe. As the coolant passes through the first spiral flow channel, it carries away the heat transferred from the crystallizer and flows out through the first water outlet pipe, cooling the meniscus region and causing the molten metal to form an initial solidified shell.

[0011] The slow-cooling water jacket includes a slow-cooling outer shell, inside which a second spiral flow channel is installed. A second connecting port is installed at one end of the second spiral flow channel, and a second sliding groove is provided on the second connecting port. An opening and closing element is installed inside the second connecting port, and a second water outlet pipe is installed on the second spiral flow channel. The coolant carries away the heat transferred from the crystallizer through the second spiral flow channel.

[0012] The opening and closing element includes a plunger that slides within a first sliding groove and a second sliding groove. A through groove is provided on the plunger. A connecting block is mounted on one side of the plunger, and a first wedge block is mounted on one side of the connecting block. A first limiting plate is mounted on the first wedge block, and a first elastic element is mounted on the first limiting plate. One side of the first elastic element is installed within the first and second sliding grooves. A second wedge block is mounted on one side of the first wedge block, and a trigger block is slidably mounted on one side of the second wedge block. A second limiting plate is mounted on the second wedge block, and a second elastic element is mounted on the second limiting plate. One side of the second elastic element is installed within the first and second sliding grooves.

[0013] The first elastic element is a first spring, and the second elastic element is a second spring. When the heat-insulating water jacket and the slow-cooling water jacket on both sides of the crystallizer are combined, the trigger blocks on both sides squeeze each other, causing the trigger blocks to move away from the crystallizer. The trigger blocks drive the second wedge block to move away from the crystallizer. The second wedge block abuts against the first wedge block. The second wedge block drives the first wedge block to move away from the trigger block. The first wedge block drives the connecting block to move away from the trigger block. The connecting block drives the plunger to move away from the trigger block until the through groove connects with the first and second connecting ports, allowing the coolant to flow in the first and second spiral flow channels on both sides. After use, the coolant in the first and second spiral flow channels is first pumped out, and then the heat-insulating water jacket and the slow-cooling water jacket on both sides of the crystallizer are separated. The trigger block is reset under the tension of the second spring, and the plunger is reset under the tension of the first spring. The plunger blocks the first and second connecting ports.

[0014] The quench chamber includes a quench shell, inside which is installed a liquid collection chamber with a liquid outlet. A diversion hole is installed on the side wall of the liquid collection chamber. A water inlet chamber is installed on one side of the liquid collection chamber, and a second water inlet pipe is installed on the water inlet chamber. A guide plate is installed on one side of the water inlet chamber, and a turbulence chamber is installed on the other side of the guide plate. A recovery chamber is installed below the turbulence chamber, and a recovery pipe is installed inside the recovery chamber. A one-way valve is installed inside the recovery pipe, which is connected to the liquid collection chamber. An overflow pipe is installed on the side wall of the recovery chamber.

[0015] During use, the coolant enters the inlet chamber through the second inlet pipe. Under the water pressure in the inlet chamber, it passes through the guide plate to form a jet. The jet hits the inner wall of the turbulence chamber, rapidly exchanging heat with the crystallizer. The impacted water flows down the inner wall of the turbulence chamber and eventually collects in the recovery chamber. The coolant in the recovery chamber enters the liquid collection chamber through the recovery pipe, and then enters the second spiral flow channel from the liquid collection chamber. This preheats the coolant entering the second spiral flow channel, ensuring that the temperature of the coolant entering the second spiral flow channel is not too low.

[0016] The guide plate includes a baffle plate installed on one side of the water inlet chamber. The baffle plate has conical jets for turbulence. A sealing plate is installed on one side of the baffle plate, and a water distribution plate with water distribution holes is installed on the other side of the sealing plate. Coolant from the water inlet chamber is ejected at high speed from the jets, forming fine jets that impact and heat the crystallizer, rapidly cooling the molten metal inside. The water after impact flows down the inner wall of the turbulence chamber and enters the recovery chamber through the water distribution holes. Excess coolant flows out through the overflow pipe to prevent coolant buildup from obstructing the jets.

[0017] The dual-chamber regulating element includes a regulating valve, a sealing tube installed on one side of the regulating valve, a differential chamber installed on the other side of the sealing tube, a slow cooling tube and a rapid cooling tube installed on the regulating valve, the slow cooling tube being connected to the diversion hole via a pipe, the rapid cooling tube being connected to the second inlet pipe via a pipe, a first valve stem being slidably installed inside the regulating valve, a normally open groove and a slow cooling groove being provided on the upper side of the first valve stem, a rapid cooling groove being provided on the lower side of the first valve stem, a baffle being installed on one side of the first valve stem, a third elastic element being installed on the baffle, and one side of the third elastic element being installed on the sealing tube.

[0018] A first capillary heat pipe and a second capillary heat pipe are installed between the liquid collecting chamber and the turbulent flow chamber. The hot ends of the first and second capillary heat pipes are attached to the crystallizer. The hot ends of the first and second capillary heat pipes are located at the junction of the slow cooling water jacket and the rapid cooling assembly. The differential chamber includes an upper chamber, a middle chamber, and a lower chamber. The cold end of the first capillary heat pipe is installed in the upper chamber, which is filled with a thermochromic material. A first piston is installed at one end of the upper chamber. The cold end of the second capillary heat pipe is installed in the lower chamber, which is filled with a thermochromic material. A second piston is installed at one end of the lower chamber. The middle chamber is filled with an incompressible liquid. The middle chamber is connected to the sealing tube through a pipe. When the expansion temperatures of the upper and lower chambers are different, the first and second pistons will approach each other. The first and second pistons will push the incompressible liquid in the middle chamber into the sealing tube, thereby causing the incompressible liquid to move the baffle.

[0019] In the initial state, the coolant enters the regulating valve through the main open valve, enters the slow cooling pipe through the normally open slot of the first valve stem, and then enters the diversion hole from the slow cooling pipe. This allows the low-flow coolant to first enter the second spiral flow channel through the liquid collection chamber, ensuring that the slow cooling water jacket provides sufficient cooling to the molten metal when the ingot head drives it into the slow cooling water jacket area. When the ingot head in the crystallizer moves the baffle to the quench chamber area, the baffle moves towards the main open valve. The baffle drives the first valve stem towards the main open valve until the quench tank connects with the quench pipe. The coolant then enters the water inlet chamber from the quench pipe, initiating rapid cooling.

[0020] The limiting components include a main opening valve, which is installed on one side of the regulating valve and connected to the regulating valve via a pipe. A temperature control box is installed below the main opening valve, and an outer cylinder is slidably installed inside the temperature control box. A first limiting block is installed on one side of the outer cylinder, and a fourth elastic element is installed on the first limiting block. The fourth elastic element is installed inside the temperature control box. A main water inlet pipe is installed on the main opening valve. A sliding plate with a straight groove is installed on one side of the first valve stem. A blocking block is slidably installed inside the main opening valve, and a connecting column is installed on one side of the blocking block. An inner column is installed on one side of the connecting column and slides inside the outer cylinder. A second limiting block is installed on one side of the inner column, and a fifth elastic element is installed on the second limiting block. The fifth elastic element is installed on the outer cylinder.

[0021] The fourth elastic element is the fourth spring, and the fifth elastic element is the fifth spring. The temperature control box is filled with thermochromic material, and a third capillary heat pipe is installed inside the temperature control box. The hot end of the third capillary heat pipe is located in the recovery chamber. When the temperature at the bottom of the crystallizer rises, the third capillary heat pipe transfers the temperature to the temperature control box. The thermochromic material inside the temperature control box expands due to heat, causing the outer cylinder to move away from the temperature control box. The outer cylinder then causes the inner column to move away from the temperature control box.

[0022] Initially, the sliding plate blocks the inner column from moving away from the temperature control box, maintaining a low flow rate into the regulating valve. When the first valve stem drives the sliding plate to move closer to the main water inlet pipe, the straight groove is located below the blocking block. The inner column continues to move away from the temperature control box through the straight groove, and the inner column drives the blocking block to move away from the temperature control box, increasing the flow rate into the regulating valve. When the inner column moves away from the temperature control box during continuous casting, it indicates that the overall cooling intensity of the coolant is insufficient. By adjusting the flow rate into the regulating valve, the overall cooling intensity of the coolant is increased, thereby regulating the overall billet temperature.

[0023] The electromagnetic stirring device includes an electric winch with a steel wire rope wound on it. An electromagnetic stirrer is installed at one end of the steel wire rope and slides within the worktable. The electric winch and the electromagnetic stirrer are connected to a control system. When molten metal enters the crystallizer, the electric winch is controlled to rotate, moving the electromagnetic stirrer onto the crystallizer to stir the molten metal inside.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adopts a multi-stage cooling water jacket, which can adjust the cooling intensity according to the different stages of the molten metal entering the crystallizer, so that the billet can obtain a suitable cooling effect at different solidification stages. When the molten metal enters the crystallizer, a heat preservation and weak cooling method is adopted to ensure that the initial solidified shell in the meniscus region will not crack due to rapid cooling, thereby improving the stability of the initial solidification stage. Then, it enters the slow cooling chamber for moderate intensity transition cooling, and the solidified shell gradually and uniformly thickens to prevent the outer shell from cracking when encountering a rapid drop in temperature. Finally, it enters the rapid cooling chamber for forced rapid cooling, thereby achieving rapid solidification and grain refinement, improving the internal microstructure of the billet, and improving the subsequent solidification efficiency while maintaining solidification stability, thus improving the quality of the billet. Attached Figure Description

[0025] Figure 1 This is a perspective view of the semi-continuous casting equipment of the present invention; Figure 2 This is a perspective view of the cooling device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cooling device of the present invention; Figure 4 This is an exploded view of the slow-cooling component of the present invention; Figure 5 This is a perspective view of the opening and closing element of the present invention; Figure 6 This is a schematic diagram of the internal structure of the quenching chamber of the present invention; Figure 7 This is a perspective view of the guide plate of the present invention; Figure 8 This is a perspective view of the electromagnetic stirring device of the present invention; Figure 9 This is an exploded view of the dual-cavity adjustment element of the present invention; Figure 10 This is an exploded view of the defining element of the present invention.

[0026] In the diagram: 1. Cooling device; 11. Slow-cooling assembly; 111. Insulating water jacket; 1111. Insulating outer shell; 1112. First spiral flow channel; 1113. First connecting port; 1114. First water inlet pipe; 1115. First water outlet pipe; 112. Slow-cooling water jacket; 1121. Slow-cooling outer shell; 1122. Second spiral flow channel; 1123. Second connecting port; 113. Opening and closing element; 1131. Plunger; 1132. Through... 1133, First wedge block; 1134, First limiting plate; 1135, First elastic element; 1136, Second wedge block; 1137, Trigger block; 1138, Second elastic element; 12, Rapid cooling assembly; 121, Rapid cooling chamber; 1211, Rapid cooling shell; 1212, Liquid collection chamber; 1213, Diverting hole; 1214, Recovery pipe; 1215, Recovery chamber; 1216, Turbulent flow chamber; 1217, Liquid outlet; 12 2. Guide plate; 1221. Baffle plate; 1222. Flow hole; 1223. Sealing plate; 1224. Water distribution plate; 1225. Water distribution hole; 13. Adjustment assembly; 131. Dual-chamber adjustment element; 1311. Adjustment valve; 1312. Slow cooling pipe; 1313. Rapid cooling pipe; 1314. Sealing pipe; 1315. First valve stem; 1316. Rapid cooling tank; 1317. Slow cooling tank; 1318. Normally open tank; 1319. 132. Third elastic element; 132. Limiting element; 1321. Main opening valve; 1322. Temperature control box; 1323. Main water inlet pipe; 1324. Blocking block; 1325. Sliding plate; 1326. Straight groove; 1327. Inner column; 1328. Fifth elastic element; 1329. Outer cylinder; 14. Support plate; 2. Crystallizer; 3. Workbench; 4. Electromagnetic stirring device; 41. Electric winch; 42. Electromagnetic stirrer; 43. Steel wire rope. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-8 The first embodiment of the present invention shown includes a semi-continuous casting equipment for billets, comprising a workbench 3, an electromagnetic stirring device 4 installed on one side of the workbench 3, and a crystallizer 2 installed on the other side of the workbench 3. The electromagnetic stirring device 4 slides on the crystallizer 2, and a cooling device 1 is installed on one side of the crystallizer 2. During operation, the cooling device 1 is first moved to be attached to the outside of the crystallizer 2, and molten metal is introduced into the crystallizer 2 through a ladle. Then, the electromagnetic stirring device 4 is moved onto the crystallizer 2, and the ingot head in the crystallizer 2 descends and passes through different parts of the cooling device 1, causing the molten metal to gradually solidify. At the same time, the electromagnetic stirring device 4 stirs the molten metal in the crystallizer 2, improving the surface and internal quality of the billet. Finally, the solidified billet is drawn out by a traction device.

[0029] The cooling device 1 includes a slow cooling component 11 and a support plate 14. A drive component is installed on the support plate 14, a rapid cooling component 12 is installed on the drive component, and an adjustment component 13 is installed on the rapid cooling component 12. The adjustment component 13 and the rapid cooling component 12 are connected by a pipe, and the drive component is connected to the control system. The drive component is used to drive the rapid cooling component 12 to move and control the opening and closing of the rapid cooling component 12. The slow cooling component 11 is used to improve the stability of the solidification stage, so that the solidified shell gradually and uniformly thickens and prevents the shell from cracking when it encounters a rapid drop in temperature. The rapid cooling component 12 is used to force rapid cooling of the molten metal to achieve rapid solidification and grain refinement. The adjustment component 13 is used to adjust the cooling intensity of the coolant according to the temperature change of the molten metal.

[0030] The slow cooling assembly 11 includes an insulated water jacket 111, and a slow cooling water jacket 112 is installed on one side of the insulated water jacket 111. The slow cooling water jacket 112 is installed on the rapid cooling assembly 12 and is connected to the rapid cooling assembly 12 through a pipe. An opening and closing element 113 is slidably installed inside the slow cooling water jacket 112. The insulated water jacket 111 adopts a thermal insulation and weak cooling method to ensure that the initial solidified shell in the meniscus region will not crack due to rapid cooling. The slow cooling water jacket 112 adopts a moderate intensity transition cooling to make the solidified shell thicken uniformly. The opening and closing element 113 is used to prevent coolant leakage.

[0031] The quenching assembly 12 includes a quenching chamber 121, in which a guide plate 122 is installed. The quenching chamber 121 is used to force the molten metal to cool rapidly, thereby achieving rapid solidification and grain refinement. The guide plate 122 is used to guide the flow of the coolant.

[0032] The insulating water jacket 111 includes an insulating outer shell 1111. A first spiral flow channel 1112 is installed inside the insulating outer shell 1111. A first connecting port 1113 is installed at one end of the first spiral flow channel 1112. An opening / closing element 113 is installed inside the first connecting port 1113. A first sliding groove is provided on the first connecting port 1113. A first water inlet pipe 1114 is installed on one side of the first spiral flow channel 1112, and a first water outlet pipe 1115 is installed on the other side. Coolant is introduced into the first spiral flow channel 1112 through the first water inlet pipe 1114. As the coolant passes through the first spiral flow channel 1112, it carries away the heat transferred from the crystallizer 2 and flows out through the first water outlet pipe 1115, cooling the meniscus region and causing the molten metal to form an initial solidified shell.

[0033] The slow-cooling water jacket 112 includes a slow-cooling outer shell 1121. A second spiral flow channel 1122 is installed inside the slow-cooling outer shell 1121. A second connecting port 1123 is installed at one end of the second spiral flow channel 1122. A second sliding groove is provided on the second connecting port 1123. An opening / closing element 113 is installed inside the second connecting port 1123. A second water outlet pipe is installed on the second spiral flow channel 1122. The coolant carries away the heat transferred from the crystallizer 2 through the second spiral flow channel 1122.

[0034] The opening and closing element 113 includes a plunger 1131, which slides within a first sliding groove and a second sliding groove. A through groove 1132 is provided on the plunger 1131. A connecting block is installed on one side of the plunger 1131, and a first wedge block 1133 is installed on one side of the connecting block. A first limiting plate 1134 is installed on the first wedge block 1133, and a first elastic element 1135 is installed on the first limiting plate 1134. One side of the first elastic element 1135 is installed within the first and second sliding grooves. A second wedge block 1136 is installed on one side of the first wedge block 1133, and a trigger block 1137 is slidably installed on one side of the second wedge block 1136. A second limiting plate is installed on the second wedge block 1136, and a second elastic element 1138 is installed on the second limiting plate. One side of the second elastic element 1138 is installed within the first and second sliding grooves.

[0035] The first elastic element 1135 is a first spring, and the second elastic element 1138 is a second spring. When the heat-insulating water jacket 111 and the slow-cooling water jacket 112 on both sides of the crystallizer 2 are engaged, the trigger blocks 1137 on both sides press against each other, causing the trigger blocks 1137 to move away from the crystallizer 2. The trigger blocks 1137 drive the second wedge block 1136 to move away from the crystallizer 2. The second wedge block 1136 abuts against the first wedge block 1133, and the second wedge block 1136 drives the first wedge block 1133 to move away from the trigger block 1137. The first wedge block 1133 drives the connecting block to move away from the trigger block 1137. The connecting block drives... The plunger 1131 moves away from the trigger block 1137 until the through groove 1132 connects with the first connecting port 1113 and the second connecting port 1123, so that the coolant can flow in the first spiral flow channel 1112 and the second spiral flow channel 1122 on both sides. After use, the coolant in the first spiral flow channel 1112 and the second spiral flow channel 1122 is first pumped out, and then the heat insulation water jacket 111 and the slow cooling water jacket 112 on both sides of the crystallizer 2 are separated. The trigger block 1137 is reset under the tension of the second spring, the plunger 1131 is reset under the tension of the first spring, and the plunger 1131 blocks the first connecting port 1113 and the second connecting port 1123.

[0036] The quench chamber 121 includes a quench shell 1211, a liquid collection chamber 1212 is installed inside the quench shell 1211, a liquid outlet 1217 is installed on the liquid collection chamber 1212, a diversion hole 1213 is installed on the side wall of the liquid collection chamber 1212, a water inlet chamber is installed on one side of the liquid collection chamber 1212, a second water inlet pipe is installed on the water inlet chamber, a guide plate 122 is installed on one side of the water inlet chamber, a turbulence chamber 1216 is installed on the other side of the guide plate 122, a recovery chamber 1215 is installed below the turbulence chamber 1216, a recovery pipe 1214 is installed in the recovery chamber 1215, a one-way valve is installed in the recovery pipe 1214, the recovery pipe 1214 is connected to the liquid collection chamber 1212, and an overflow pipe is installed on the side wall of the recovery chamber 1215.

[0037] During use, the coolant enters the inlet chamber through the second inlet pipe. Under the water pressure in the inlet chamber, it passes through the guide plate 122 to form a jet. The jet hits the inner wall of the turbulence chamber 1216, rapidly exchanging heat with the crystallizer 2. The impacted water flows down the inner wall of the turbulence chamber 1216 and eventually collects in the recovery chamber 1215. The coolant in the recovery chamber 1215 enters the liquid collection chamber 1212 through the recovery pipe 1214, and then enters the second spiral flow channel 1122 from the liquid collection chamber 1212. This preheats the coolant entering the second spiral flow channel 1122, ensuring that the temperature of the coolant entering the second spiral flow channel 1122 is not too low.

[0038] The guide plate 122 includes a baffle 1221, which is installed on one side of the water inlet chamber. The baffle 1221 has a conical flow hole 1222. A sealing plate 1223 is installed on one side of the baffle 1221, and a water distribution plate 1224 is installed on one side of the sealing plate 1223. The water distribution plate 1224 has water distribution holes 1225. The coolant in the water inlet chamber is ejected at high speed from the flow hole 1222, forming a series of fine jets that impact and heat exchange the crystallizer 2, rapidly cooling the molten metal inside. The impacted water flows down the inner wall of the flow chamber 1216 and enters the recovery chamber 1215 through the water distribution holes 1225. Excess coolant flows out through the overflow pipe to prevent coolant accumulation from obstructing the flow hole 1222.

[0039] The electromagnetic stirring device 4 includes an electric winch 41 with a steel wire rope 43 wound on it. An electromagnetic stirrer 42 is installed at one end of the steel wire rope 43 and slides within the worktable 3. The electric winch 41 and the electromagnetic stirrer 42 are connected to a control system. When molten metal enters the crystallizer 2, the electromagnetic stirrer 42 is moved onto the crystallizer 2 by controlling the rotation of the electric winch 41 to stir the molten metal inside the crystallizer 2.

[0040] like Figures 9-10 The second embodiment of the present invention shown provides an adjustment component 13 that is different from that in the first embodiment. The difference is that the adjustment effect of the adjustment component 13 is changed in this embodiment. By the different temperature rises in the slow cooling water jacket 112 and the rapid cooling component 12, the flow rate of the coolant entering the slow cooling and rapid cooling regions is distributed. Under the premise of ensuring that the cooling intensity entering the rapid cooling region is sufficient, the cooling intensity of the slow cooling region is adjusted so that the temperature of the molten metal entering the slow cooling region is not too high or too low, and the solidified shell of the molten metal is thick enough before entering the rapid cooling region.

[0041] Specifically, the regulating assembly 13 includes a dual-cavity regulating element 131, with a limiting element 132 installed on one side of the dual-cavity regulating element 131. The dual-cavity regulating element 131 is used to distribute the coolant ratio between the slow cooling water jacket 112 and the rapid cooling chamber 121, and the limiting element 132 is used to limit the flow rate of coolant in the slow cooling water jacket 112 when the ingot head just passes through it, to prevent over-cooling.

[0042] The dual-chamber regulating element 131 includes a regulating valve 1311. A sealing pipe 1314 is installed on one side of the regulating valve 1311, and a differential chamber is installed on one side of the sealing pipe 1314. A slow cooling pipe 1312 and a rapid cooling pipe 1313 are installed on the regulating valve 1311. The slow cooling pipe 1312 is connected to the diversion hole 1213 through a pipe, and the rapid cooling pipe 1313 is connected to the second water inlet pipe through a pipe. A first valve stem 1315 is slidably installed inside the regulating valve 1311. A normally open groove 1318 and a slow cooling groove 1317 are provided on the upper side of the first valve stem 1315, and a rapid cooling groove 1316 is provided on the lower side of the first valve stem 1315. A baffle is installed on one side of the first valve stem 1315, and a third elastic element 1319 is installed on the baffle. One side of the third elastic element 1319 is installed on the sealing pipe 1314.

[0043] A first capillary heat pipe and a second capillary heat pipe are installed between the liquid collecting chamber 1212 and the turbulent chamber 1216. The hot ends of the first and second capillary heat pipes are attached to the crystallizer 2. The hot ends of the first and second capillary heat pipes are located at the junction of the slow cooling water jacket 112 and the rapid cooling assembly 12. The differential chamber includes an upper chamber, a middle chamber, and a lower chamber. The cold end of the first capillary heat pipe is installed in the upper chamber, which is filled with a thermochromic material. A first piston is installed at one end of the upper chamber. The cold end of the second capillary heat pipe is installed in the lower chamber, which is filled with a thermochromic material. A second piston is installed at one end of the lower chamber. The middle chamber is filled with an incompressible liquid. The middle chamber is connected to the sealing pipe 1314 through a pipe. When the expansion temperatures of the upper and lower chambers are different, the first and second pistons will approach each other. The first and second pistons will push the incompressible liquid in the middle chamber into the sealing pipe 1314, thereby causing the incompressible liquid to move the baffle.

[0044] In the initial state, the coolant enters the regulating valve 1311 through the main open valve 1321, enters the slow cooling pipe 1312 through the normally open slot 1318 of the first valve stem 1315, and enters the diversion hole 1213 from the slow cooling pipe 1312. This allows the low-flow coolant to first enter the second spiral flow channel 1122 through the liquid collection chamber 1212, ensuring that the slow cooling water jacket 112 provides sufficient cooling to the molten metal when the ingot head drives it into the slow cooling water jacket 112 area. When the ingot head in the crystallizer 2 moves the baffle to the quench chamber 121 area, the baffle moves towards the main open valve 1321. The baffle drives the first valve stem 1315 towards the main open valve 1321 until the quench tank 1316 connects with the quench pipe 1313. The coolant then enters the water inlet chamber from the quench pipe 1313, initiating rapid cooling.

[0045] The limiting element 132 includes a main opening valve 1321, which is installed on one side of the regulating valve 1311. The main opening valve 1321 and the regulating valve 1311 are connected by a pipe. A temperature control box 1322 is installed below the main opening valve 1321. An outer cylinder 1329 is slidably installed inside the temperature control box 1322. A first limiting block is installed on one side of the outer cylinder 1329. A fourth elastic element is installed on the first limiting block and is installed inside the temperature control box 1322. A main water inlet pipe 132 is installed on the main opening valve 1321. 3. A sliding plate 1325 is installed on one side of the first valve stem 1315. A straight groove 1326 is provided on the sliding plate 1325. A blocking block 1324 is slidably installed inside the main opening valve 1321. A connecting column is installed on one side of the blocking block 1324. An inner column 1327 is installed on one side of the connecting column. The inner column 1327 slides inside the outer cylinder 1329. A second limiting block is installed on one side of the inner column 1327. A fifth elastic element 1328 is installed on the second limiting block. The fifth elastic element 1328 is installed on the outer cylinder 1329.

[0046] The fourth elastic element is the fourth spring, and the fifth elastic element 1328 is the fifth spring. The temperature control box 1322 is filled with thermochromic material. The temperature control box 1322 is equipped with a third capillary heat pipe. The hot end of the third capillary heat pipe is located in the recovery chamber 1215. When the temperature at the bottom of the crystallizer 2 rises, the third capillary heat pipe transfers the temperature to the temperature control box 1322. The thermochromic material in the temperature control box 1322 expands due to heat, causing the outer cylinder 1329 to move away from the temperature control box 1322. The outer cylinder 1329 causes the inner column 1327 to move away from the temperature control box 1322.

[0047] Initially, the sliding plate 1325 blocks the inner column 1327 from moving away from the temperature control box 1322, maintaining a low flow rate into the regulating valve 1311. When the first valve stem 1315 drives the sliding plate 1325 to move closer to the main water inlet pipe 1323, the straight groove 1326 is located below the blocking block 1324. The inner column 1327 continues to move away from the temperature control box 1322 through the straight groove 1326. The inner column 1327 drives the blocking block 1324 to move away from the temperature control box 1322, increasing the flow rate into the regulating valve 1311. When the inner column 1327 moves away from the temperature control box 1322 during continuous casting, it indicates that the overall cooling intensity of the coolant is insufficient. By adjusting the flow rate into the regulating valve 1311, the overall cooling intensity of the coolant is increased, thereby regulating the overall billet temperature.

[0048] Working principle of the invention: During operation, the control drive component moves the rapid cooling component 12, controlling the rapid cooling components 12 on both sides of the crystallizer 2 to come together. The rapid cooling components 12 on both sides are attached to the outside of the crystallizer 2. When the heat insulation water jacket 111 and the slow cooling water jacket 112 on both sides of the crystallizer 2 are engaged, the trigger blocks 1137 on both sides press against each other, causing the trigger blocks 1137 to move away from the crystallizer 2. The trigger blocks 1137 drive the second wedge block 1136 to move away from the crystallizer 2. The second wedge block 1136 abuts against the first wedge block 1133, and the second wedge block 1136 drives the first wedge block 1133 to move away from the crystallizer 2. The first wedge block 1133 moves away from the trigger block 1137, and the connecting block moves away from the trigger block 1137. The connecting block moves the plunger 1131 away from the trigger block 1137 until the through groove 1132 connects with the first connecting port 1113 and the second connecting port 1123, so that the coolant can flow in the first spiral flow channel 1112 and the second spiral flow channel 1122 on both sides. The molten metal is introduced into the crystallizer 2 through the ladle. Then, by controlling the electric winch 41 to rotate, the electromagnetic stirrer 42 is moved to the crystallizer 2 to stir the molten metal in the crystallizer 2.

[0049] When the molten metal enters the crystallizer 2, the ingot head pulls the molten metal down along the crystallizer 2. Simultaneously, coolant is introduced from the first inlet pipe 1114 into the first spiral flow channel 1112. As the coolant passes through the first spiral flow channel 1112, it carries away the heat transferred from the crystallizer 2 and flows out from the first outlet pipe 1115, cooling the meniscus region and causing the molten metal to form an initial solidified shell. At the same time, coolant enters the inlet chamber from the second inlet pipe. Under the water pressure in the inlet chamber, the coolant is ejected at high speed from the jet orifice 1222, forming fine jets that impact and heat exchange the crystallizer 2, thus cooling the crystallizer. The molten metal in chamber 2 is rapidly cooled, and the impacted water flows down the inner wall of the turbulence chamber 1216 and enters the recovery chamber 1215 through the water distribution hole 1225. Excess coolant flows out through the overflow pipe to prevent coolant accumulation from blocking the turbulence hole 1222. The coolant in the recovery chamber 1215 enters the liquid collection chamber 1212 through the recovery pipe 1214, and then enters the second spiral flow channel 1122 from the liquid collection chamber 1212. This preheats the coolant entering the second spiral flow channel 1122, ensuring that the temperature of the coolant entering the second spiral flow channel 1122 is not too low. Finally, the solidified billet is drawn out through the traction device.

[0050] During the movement of the ingot head, in the initial state, the sliding plate 1325 blocks the inner column 1327 from moving away from the temperature control box 1322, maintaining a low flow rate into the regulating valve 1311. The coolant enters the regulating valve 1311 through the main open valve 1321, enters the slow cooling pipe 1312 through the normally open slot 1318 of the first valve stem 1315, and enters the diversion hole 1213 from the slow cooling pipe 1312. This allows the low flow rate of coolant to first enter the second spiral flow channel 1122 through the liquid collection chamber 1212, ensuring that the slow cooling water jacket 112 provides sufficient cooling to the molten metal when the ingot head drives the molten metal into the slow cooling water jacket 112 area.

[0051] When the ingot head in crystallizer 2 moves the baffle to the quench chamber 121 area, the baffle moves towards the main valve 1321. The baffle moves the first valve stem 1315 towards the main valve 1321 until the quench tank 1316 is connected to the quench pipe 1313. Coolant enters the water inlet chamber from the quench pipe 1313, activating rapid cooling. When the first valve stem 1315 moves the sliding plate 1325 towards the main water inlet pipe 1323, the straight groove 1326 is located at the shielding block 132. 4. Below, the inner column 1327 continues to move away from the temperature control box 1322 via the straight groove 1326. The inner column 1327 drives the shielding block 1324 to move away from the temperature control box 1322, increasing the flow rate into the regulating valve 1311. When the inner column 1327 moves away from the temperature control box 1322 during continuous casting, it indicates that the overall cooling intensity of the coolant is insufficient. By adjusting the flow rate into the regulating valve 1311, the overall cooling intensity of the coolant is increased, thereby regulating the overall billet temperature.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A semi-continuous casting equipment for billets, characterized in that: Includes a workbench (3), an electromagnetic stirring device (4) is installed on one side of the workbench (3), a crystallizer (2) is installed on the other side of the workbench (3), the electromagnetic stirring device (4) slides on the crystallizer (2), and a cooling device (1) is installed on one side of the crystallizer (2). The cooling device (1) includes a slow cooling component (11) and a support plate (14). A drive component is installed on the support plate (14), a rapid cooling component (12) is installed on the drive component, and an adjustment component (13) is installed on the rapid cooling component (12). The adjustment component (13) and the rapid cooling component (12) are connected by a pipe, and the drive component is connected to the control system. The slow cooling component (11) includes an insulated water jacket (111), and a slow cooling water jacket (112) is installed on one side of the insulated water jacket (111). The slow cooling water jacket (112) is installed on the rapid cooling component (12). The slow cooling water jacket (112) is connected to the rapid cooling component (12) through a pipe. An opening and closing element (113) is slidably installed inside the slow cooling water jacket (112).

2. The semi-continuous casting equipment for billets according to claim 1, characterized in that: The quench assembly (12) includes a quench chamber (121) and a baffle plate (122) is installed inside the quench chamber (121). The adjustment assembly (13) includes a dual-cavity adjustment element (131), and a limiting element (132) is installed on one side of the dual-cavity adjustment element (131).

3. The semi-continuous casting equipment for billets according to claim 1, characterized in that: The heat-insulating water jacket (111) includes a heat-insulating shell (1111), and a first spiral flow channel (1112) is installed inside the heat-insulating shell (1111). A first connecting port (1113) is installed at one end of the first spiral flow channel (1112). The opening and closing element (113) is installed in the first connecting port (1113). A first sliding groove is provided on the first connecting port (1113). A first water inlet pipe (1114) is installed on one side of the first spiral flow channel (1112), and a first water outlet pipe (1115) is installed on the other side of the first spiral flow channel (1112).

4. A semi-continuous casting equipment for billets according to claim 3, characterized in that: The slow-cooling water jacket (112) includes a slow-cooling outer shell (1121), inside which a second spiral flow channel (1122) is installed. A second connecting port (1123) is installed at one end of the second spiral flow channel (1122), and a second sliding groove is provided on the second connecting port (1123). The opening and closing element (113) is installed in the second connecting port (1123), and a second water outlet pipe is installed on the second spiral flow channel (1122).

5. A semi-continuous casting equipment for billets according to claim 4, characterized in that: The opening and closing element (113) includes a plunger (1131), which slides in a first sliding groove and a second sliding groove. A through groove (1132) is provided on the plunger (1131). A connecting block is installed on one side of the plunger (1131), and a first wedge block (1133) is installed on one side of the connecting block. A first limiting plate (1134) is installed on the first wedge block (1133), and a first elastic element (1135) is installed on the first limiting plate (1134). One side of the first elastic element (1135) is installed in the first sliding groove and the second sliding groove. A second wedge block (1136) is installed on one side of the first wedge block (1133). A trigger block (1137) is slidably installed on one side of the second wedge block (1136). A second limiting plate is installed on the second wedge block (1136). A second elastic element (1138) is installed on the second limiting plate. One side of the second elastic element (1138) is installed in the first sliding groove and the second sliding groove.

6. A semi-continuous casting equipment for billets according to claim 2, characterized in that: The quench chamber (121) includes a quench shell (1211), inside which a liquid collecting chamber (1212) is installed. A liquid outlet (1217) is installed on the liquid collecting chamber (1212). A diversion hole (1213) is installed on the side wall of the liquid collecting chamber (1212). A water inlet chamber is installed on one side of the liquid collecting chamber (1212), and a second water inlet pipe is installed on the water inlet chamber. The guide plate (122) is installed... A turbulence chamber (1216) is installed on one side of the water inlet chamber and on the other side of the guide plate (122). A recovery chamber (1215) is installed below the turbulence chamber (1216). A recovery pipe (1214) is installed inside the recovery chamber (1215). A one-way valve is installed inside the recovery pipe (1214). The recovery pipe (1214) is connected to the liquid collection chamber (1212). An overflow pipe is installed on the side wall of the recovery chamber (1215).

7. A semi-continuous casting equipment for billets according to claim 6, characterized in that: The guide plate (122) includes a baffle (1221), which is installed on one side of the water inlet chamber. The baffle (1221) is provided with a turbulence hole (1222), which is a conical hole. A sealing plate (1223) is installed on one side of the baffle (1221), and a water distribution plate (1224) is installed on one side of the sealing plate (1223). The water distribution plate (1224) is provided with a water distribution hole (1225).

8. A semi-continuous casting apparatus for billets according to any one of claims 1-7, characterized in that: The dual-chamber regulating element (131) includes a regulating valve (1311), a sealing pipe (1314) installed on one side of the regulating valve (1311), a differential chamber installed on one side of the sealing pipe (1314), a slow cooling pipe (1312) and a rapid cooling pipe (1313) installed on the regulating valve (1311), the slow cooling pipe (1312) being connected to the diversion hole (1213) via a pipe, and the rapid cooling pipe (1313) being connected to the second inlet pipe via a pipe. A first valve stem (1315) is slidably installed inside the throttle valve (1311). The upper side of the first valve stem (1315) is provided with a normally open groove (1318) and a slow cooling groove (1317). The lower side of the first valve stem (1315) is provided with a rapid cooling groove (1316). A baffle is installed on one side of the first valve stem (1315). A third elastic element (1319) is installed on the baffle. One side of the third elastic element (1319) is installed on the sealing tube (1314).

9. A semi-continuous casting equipment for billets according to claim 8, characterized in that: The limiting element (132) includes a main opening valve (1321), which is installed on one side of a regulating valve (1311). The main opening valve (1321) and the regulating valve (1311) are connected by a pipe. A temperature control box (1322) is installed below the main opening valve (1321). An outer cylinder (1329) is slidably installed inside the temperature control box (1322). A first limiting block is installed on one side of the outer cylinder (1329). A fourth elastic element is installed on the first limiting block. The fourth elastic element is installed inside the temperature control box (1322). A main water inlet pipe (1323) is installed on the main opening valve (1321). A sliding plate (1325) is installed on one side of the first valve stem (1315). A straight groove (1326) is provided on the sliding plate (1325). A blocking block (1324) is slidably installed inside the main opening valve (1321). A connecting column is installed on one side of the blocking block (1324). An inner column (1327) is installed on one side of the connecting column. The inner column (1327) slides inside the outer cylinder (1329). A second limiting block is installed on one side of the inner column (1327). A fifth elastic element (1328) is installed on the second limiting block. The fifth elastic element (1328) is installed on the outer cylinder (1329).

10. A semi-continuous casting equipment for billets according to claim 1, characterized in that: The electromagnetic stirring device (4) includes an electric winch (41) with a steel wire rope (43) wound on it. An electromagnetic stirrer (42) is installed at one end of the steel wire rope (43). The electromagnetic stirrer (42) slides within the workbench (3). The electric winch (41) and the electromagnetic stirrer (42) are connected to the control system.

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