Continuous casting system

Abstract

The invention provides a continuous casting system for magnesium alloy, which comprises a smelting and supplying device and a continuous casting device, the smelting and supplying device comprises a smelting device, a heat preservation device communicated with the smelting device and a tundish, and the continuous casting device comprises a crystallization device, a saw cutting device and a conveying device. The smelting device is used for smelting magnesium alloy and providing the magnesium alloy for the heat preservation device, the heat preservation device conducts heat preservation on magnesium alloy liquid and provides the magnesium alloy liquid for the tundish, and the crystallization device communicates with the tundish and is used for receiving the magnesium alloy liquid provided by the tundish and solidifying the magnesium alloy liquid. The solidified magnesium rod is separated from the opening in the lower portion of the crystallization device by means of gravity, the magnesium rod is sawn by the saw cutting device when reaching the preset length, and the sawn magnesium rod is conveyed to the outside of the system through the conveying device. According to the continuous casting system, continuous casting of the magnesium alloy is achieved, the product quality is improved, the wrought magnesium alloy production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to a metal casting system, in particular to a continuous casting system for magnesium alloys. Background Art

[0002] Magnesium alloy is known as the "green metal structural material of the 21st century" and is the lightest metal structural material in current engineering applications (1.74 g·cm -3 ), in recent years, with the promotion of energy conservation and emission reduction measures, especially the introduction of a timetable for the ban on the sale of traditional fuel vehicles in various countries, the application advantages of magnesium alloys in lightweight transportation have been further highlighted, and higher requirements have been placed on their mechanical properties. Deformed magnesium alloys have a better grain size, and compared with materials such as aluminum alloys and steel, considering the specific strength and toughness, the mechanical properties of deformed magnesium alloys are also better.

[0003] Deformed magnesium alloys need to be prepared into ingots of a certain shape first. The quality of magnesium alloy ingots is closely related to the casting method. The casting methods of magnesium alloys include iron mold casting, water-cooled mold casting and semi-continuous casting. Iron mold and water-cooled mold casting are old methods with low ingot quality and production efficiency, and are rarely used. At present, semi-continuous casting is widely used in industrial production. Since the adoption of semi-continuous casting, the quality of magnesium alloy ingots has been greatly improved.

[0004] Figure 1 It is the semi-continuous casting system of magnesium alloy currently used. Figure 1 As shown, the crucible 1 is a magnesium alloy smelting and refining system. The magnesium alloy liquid in the crucible 1 after smelting and refining is transferred to the crystallizer 3 through the pipette 2 by low-pressure transfer. The crystallizer is generally a metal mold with openings on the top and bottom of 300-500 mm. The crystallizer is cooled and solidified by cooling water. Below the crystallizer is generally a casting well 4 with a depth of 10-15 meters. A support system 5 with a base and a lifting device is installed in the casting well 4. Before the casting begins, the base and the crystallizer are combined into a container with a closed bottom. After the magnesium alloy liquid in the crystallizer solidifies, the base is moved downward by the lifting device, so that the solidified magnesium alloy billet moves downward. When the billet reaches a certain length, the casting is stopped, the crystallizer is removed, and the magnesium alloy billet is lifted out by a crane. Then repeat the above steps to start the second round of casting.

[0005] Although the above-mentioned magnesium alloy semi-continuous casting system has achieved mechanization and improved working conditions, However, this magnesium alloy semi-continuous casting system has the following disadvantages: 1. The length of the magnesium alloy billet is determined by the depth of the casting well. Because the depth of the casting well cannot be infinite, when it reaches a certain depth, the casting must be stopped and the cast billet must be lifted out before the casting can continue; 2. The amount of each casting also depends on the capacity of the crucible. After each casting of the magnesium alloy liquid in the crucible is completed, it must be stopped and a new crucible must be replaced before casting.

[0006] 3. The two ends of each blank must be cut off due to uneven structure and impurities, and the remaining part can be used.

[0007] 4. Each time the casting is interrupted due to the limitation of the casting well depth, the insulation time of the magnesium alloy liquid in the crucible becomes longer, resulting in increased oxide generation, thereby increasing the generation of oxide inclusions in the billet and reducing the quality of the magnesium alloy billet.

[0008] Therefore, changing this process in which casting must be interrupted in the middle and realizing a continuous casting process of magnesium alloy is of great significance for improving the production efficiency of deformed magnesium alloy, improving product quality and reducing production costs. Summary of the invention

[0009] In view of the above problems existing in the prior art, the present invention provides a continuous casting system for magnesium alloys capable of performing continuous casting without intermediate interruption.

[0010] According to one aspect of the present invention, a continuous casting system includes a smelting and supplying device and a continuous casting device, wherein the smelting and supplying device includes a smelting device, a heat preservation device connected to the smelting device and a tundish, and the continuous casting device includes a crystallization device, a sawing device and a conveying device, wherein the smelting device is used to smelt the magnesium alloy and provide the smelted magnesium alloy liquid to the heat preservation device, the heat preservation device keeps the magnesium alloy liquid warm and provides the magnesium alloy liquid to the tundish, the crystallization device is connected to the tundish, and is used to receive the magnesium alloy liquid provided from the tundish and solidify it, the solidified magnesium alloy liquid becomes a magnesium rod that detaches from the crystallization device from the opening at the bottom of the crystallization device by gravity, and is sawed by the sawing device located at the bottom of the crystallization device when the magnesium rod reaches a predetermined length, and the sawed magnesium rod is conveyed to the outside of the continuous casting system via the conveying device.

[0011] According to the continuous casting system of the present invention, preferably, the crystallization device comprises a crystallizer, a crystallizer cover located on the upper part of the crystallizer, and an oscillating clamping device located on the lower part of the crystallizer for supporting the crystallizer.

[0012] According to the continuous casting system of the present invention, preferably, the oscillating clamping device comprises a crystallizer oscillator for supporting the crystallizer and a pulling and clamping part for pulling and clamping the magnesium rod separated from the crystallizer.

[0013] According to the continuous casting system of the present invention, preferably, the sawing device includes a measuring part, a sawing part, a cooling part, a saw dust collector and a controller connected to the above-mentioned components through a bus, the measuring part is used to measure the length of the magnesium rod passing through the sawing part and the temperature of the sawing part, when the length of the magnesium rod reaches a preset length, the measuring part sends a signal to the controller so that the controller controls the sawing part to saw, and when the measuring part measures that the temperature of the sawing part is higher than a preset temperature, the measuring part sends a signal to the controller so that the controller controls the cooling part to cool down the sawing part, and the saw dust collector is used to collect saw dust generated by the sawing of the sawing part.

[0014] According to the continuous casting system of the present invention, preferably, the controller can control the position of the sawdust collector so that the sawdust collector can be moved to an optimal position for sawdust collection.

[0015] According to the continuous casting system of the present invention, preferably, the conveying device comprises a tilting conveying part and a transporting part, and the tilting conveying part is located at the lower part of the sawing device, and is used to receive the magnesium rods sawn by the sawing device and transfer the magnesium rods to the transporting part.

[0016] According to the continuous casting system of the present invention, preferably, the tilting conveying part includes a bearing part and a tilting mechanism, the bearing part is located at the lower part of the sawing device, and is used to receive and hold the magnesium rods sawed by the sawing device, the tilting mechanism is connected to the bearing part so that the bearing part can be flipped to transfer the received magnesium rods to the transportation part, and the bearing part is a shell with an upper opening, and a retractable elastic clamping part for clamping the magnesium rods is arranged inside.

[0017] According to the continuous casting system of the present invention, preferably, the bearing part is a rectangular shell, the engaging part is a retractable protrusion with claws arranged on a first side surface and a second side surface opposite to each other inside the shell, and the length of the first side surface is longer than the second side surface and the other two side surfaces of the shell, the first side surface is the side surface for bearing the magnesium rod located at the bottom after the bearing part is flipped over, and the number of protrusions arranged on the second side surface is less than that on the first side surface.

[0018] According to the continuous casting system of the present invention, preferably, the transport part can carry the magnesium rods transported from the tilting conveyor part, and can transport the carried magnesium rods to the outside of the continuous casting system by horizontal movement and / or vertical lifting.

[0019] According to the continuous casting system of the present invention, preferably, the continuous casting system further comprises a frame, and the crystallization device, the sawing device and the conveying device are mounted on the frame.

[0020] The continuous casting system of the present invention realizes the continuous casting of magnesium alloy, improves the product quality, improves the production efficiency of deformed magnesium alloy, and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 It is a schematic structural diagram illustrating an existing semi-continuous casting system.

[0023] Figure 2 is a schematic structural block diagram illustrating a continuous casting system according to an exemplary embodiment of the present invention.

[0024] Figure 3 is a schematic structural diagram illustrating a continuous casting system according to an exemplary embodiment of the present invention.

[0025] Figure 4 is a schematic structural block diagram illustrating a sawing device in a continuous casting system according to an exemplary embodiment of the present invention. Implementation

[0026] Now, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0027] In addition, the shapes and sizes of the components shown in the drawings are only examples and do not limit the protection scope of the present invention.

[0028] Figure 2 2 is a schematic structural block diagram illustrating a continuous casting system according to an exemplary embodiment of the present invention. Figure 2 As shown, the continuous casting system of the present invention includes a smelting and supplying device 21 for melting a magnesium alloy and outputting the smelted magnesium alloy and a continuous casting device 22 for casting the magnesium alloy supplied from the smelting and supplying device 21 .

[0029] like Figure 2As shown, the smelting and supplying equipment 21 includes a smelting device 211, a heat preservation device 212 connected to the smelting device, and a tundish 213. The smelting device smelts the magnesium alloy and provides the smelted magnesium alloy liquid to the heat preservation device, and the heat preservation device keeps the magnesium alloy liquid warm and provides the magnesium alloy liquid therein to the tundish. The continuous casting equipment 22 includes a crystallization device 221, a sawing device 222, and a conveying device 223. The crystallization device is connected to the tundish and is used to receive the magnesium alloy liquid provided from the tundish. After the magnesium alloy liquid flows into the crystallization device, it solidifies in the crystallization device, and the solidified magnesium rods are separated from the crystallization device downward from the opening at the bottom of the crystallization device by gravity. The sawing device is located at the bottom of the crystallization device, and is used to saw the magnesium rods of a predetermined length separated from the crystallization device. The conveying device is used to receive the magnesium rods sawed by the sawing device and convey the magnesium rods to the outside of the system.

[0030] The continuous casting system according to the present invention can realize sawing and conveying of billets during casting, thereby improving production efficiency.

[0031] Refer to the following Figure 3 A specific structure of a continuous casting system according to an exemplary embodiment of the present invention will be described. Figure 3 Schematic diagram of the structure of a continuous casting system according to an exemplary embodiment of the present invention. Figure 3 As shown, the smelting and supplying equipment 21 in the continuous casting system of the present invention includes a melting furnace 211 as an example of a smelting device, a holding furnace 212 as an example of a holding device, and a tundish 213. The melting furnace 211 is used to melt magnesium alloy. Figure 3 Although one melting furnace is shown as an example, the present invention is not limited thereto, and one or more melting furnaces may be arranged around the holding furnace according to the capacity of the melting furnace and actual needs. The magnesium alloy liquid smelted in the melting furnace 211 may be transported to the holding furnace 212 through a magnesium liquid conveying pipe connecting the melting furnace 211 and the holding furnace 212. In the present invention, an adjusting valve may preferably be arranged on the magnesium liquid conveying pipe to adjust the flow rate of the magnesium alloy liquid.

[0032] The smelted magnesium alloy liquid is kept in a heat preservation furnace 212 for a certain temperature and time. When the magnesium alloy liquid in the heat preservation furnace reaches a certain temperature and time, the solution is transferred to a tundish 213. Figure 3The example in which the solution is transferred from the holding furnace 212 to the tundish 213 by tilting is shown, but the present invention is not limited thereto, and the solution can also be transferred to the tundish by, for example, transferring the solution by means of a delivery pipe. In addition, in the continuous casting system of the present invention, it is preferred to provide multiple holding furnaces, so that after the solution (melt) in one holding furnace is transferred to the tundish, the solution in another holding furnace starts to flow into the tundish immediately, so as to ensure that the liquid in the tundish maintains a certain liquid level height, thereby ensuring that the casting system can work continuously.

[0033] The tundish 213 is an intermediate storage device, one of the main functions of which is to collect the melt in the holding furnace 212. In addition, the tundish 213 may include a distribution device (such as a diverter) for continuously and evenly distributing (casting) the magnesium alloy liquid into the continuous casting device 22.

[0034] The melting and supplying equipment of the present invention having the above-mentioned structure can realize continuous supply of magnesium alloy liquid.

[0035] Next, refer to Figure 3 The continuous casting device 22 in the magnesium alloy continuous casting system of the present invention will be described.

[0036] like Figure 3 As shown, the magnesium alloy liquid flows from the tundish 213 into the crystallization device 221. After the magnesium alloy liquid flows into the crystallization device, it solidifies in the crystallization device, and the solidified magnesium rod falls out of the crystallization device by gravity. Figure 3 As shown, the crystallization device includes, in addition to the crystallizer 2211 as the main body, a protective cover 2212 arranged on the upper part of the crystallizer 2211 to prevent the magnesium liquid flowing into the crystallizer from splashing out, causing material waste and personal injury.

[0037] In addition, preferably, the crystallization device in the present invention may also include an oscillating clamping device, which is arranged at the lower part of the crystallizer 2211. The oscillating clamping device includes a crystallizer oscillator 2213 and a pulling clamping portion 2214. The crystallizer oscillator 2213 is located at the lower part of the crystallizer 2211 as a shock absorbing device, and is used to support the crystallizer 2211 to ensure the stability of the crystallizer during the sawing process of the magnesium rod, prevent the surface vibration of the magnesium alloy liquid in the crystallizer, reduce the oxidative inclusions in the solution, make the organizational structure more uniform, and thus improve the quality of the magnesium rod (ingot). The pulling clamping portion 2214 is used to pull and clamp the magnesium rod separated from the crystallizer, so as to ensure the smooth and continuous descent of the solidified magnesium rod, and at the same time ensure the stability of the magnesium rod during the sawing process.

[0038] The continuous casting system of the present invention can perform rod casting, crystallization and pull-down operations synchronously through the crystallization device arranged as above, thereby improving production efficiency.

[0039] The sawing device 222 is located below the crystallization device and saws the magnesium rod separated from the crystallization device. Figure 3 As shown, the sawing device 222 is located below the pulling and clamping portion 2214 and is used to saw the magnesium rod conveyed from the pulling and clamping portion 2214 .

[0040] In a preferred embodiment of the present invention, Figure 4 As shown, the sawing device 222 may include a measuring part 2221, a sawing part 2222 (such as a metal saw such as a hacksaw), a cooling part 2223, a sawdust collector 2224, and a controller 2226 connected to the above components via a bus 2225. The measuring part is used to measure the length of the magnesium rod passing through the sawing part and the temperature of the sawing part. When the length of the magnesium rod reaches a preset length, the measuring part sends a signal to the controller so that the controller controls the sawing part to perform sawing. In addition, when the measuring part measures that the temperature of the sawing part is higher than a predetermined temperature, the measuring part sends a signal to the controller so that the controller controls the cooling part to cool down the sawing part, so that the temperature of the sawing part is lower than a predetermined temperature. The sawdust collector is used to collect sawdust generated by the sawing of the sawing part.

[0041] In the present invention, preferably, the measuring part is arranged on the sawing part and includes a length measuring device for measuring the length of the magnesium rod passing through the sawing part and a temperature sensor for measuring the temperature of the sawing part, so as to improve the measurement accuracy. Alternatively, in the present invention, the controller can control the position of the sawdust collector so that the sawdust collector can be moved to the best position for sawdust collection (for example, directly below the sawing part), and when the amount of sawdust in the sawdust collector reaches a certain amount, the sawdust collector is controlled to transport the sawdust to the outside of the system, so as to improve the effect of sawdust collection and make the sawing space cleaner. In addition, in the present invention, preferably, the cooling part uses a cooling method of spraying nitrogen to cool the sawing part.

[0042] The sawing device according to the present invention can saw off the crystallized rods in a timely and quantitative manner, and realizes sawing, sawing cooling and sawdust collection synchronously with the descent of the rods. In addition, the cooling method of filling the sawing space with nitrogen can prevent oxidation and fire during sawing, and can reduce costs compared with other cooling methods.

[0043] The conveying device 223 in the magnesium alloy continuous casting equipment of the present invention will be described below with reference to the accompanying drawings.

[0044] The conveying device of the present invention is used to receive the magnesium rods cut by the sawing device and convey them to the outside of the system. Figure 3 As shown, preferably, the conveying device may include a tilting conveying portion 2231 and a transport portion 2232 .

[0045] The tilting conveying portion 2231 is located at the lower part of the sawing device 222 , and is used to receive the magnesium rods sawed by the sawing device 222 and transfer the magnesium rods to the transporting portion 2232 .

[0046] The tilting conveying part 2231 includes a bearing part 2231-1, a tilting mechanism 2231-2, and a controller (not shown in the figure) connected to the two through a bus to control the operation of the two. The bearing part 2231-1 is located at the lower part of the sawing device 222, and is used to receive and hold the magnesium rod sawed by the sawing device 222. In addition, the tilting mechanism 2231-2 is connected to the bearing part 2231-1 so that the bearing part can be turned over to transfer the received magnesium rod to the transport part 2232. The bearing part can be a shell with an upper opening, and a retractable elastic clamping part 2231-3 (such as a holding wheel system) for clamping the magnesium rod is arranged inside. In the process of the sawed magnesium rod falling from the sawing device to the bearing part, the control part controls the bearing part so that the clamping part is in a retracted state to receive the magnesium rod; and when the magnesium rod falls into the bearing part, the controller controls the bearing part so that the clamping part is in an extended state to clamp the magnesium rod. After the clamping part clamps the magnesium rod, the control part controls the tilting mechanism to flip the carrying part so that the carrying part is in a position where the magnesium rod can be transferred to the transport part 2232 through the opening. Figure 3 When the magnesium rod is in a horizontal position after being flipped 90 degrees, the controller controls the carrying part to retract its engaging part, thereby transferring the magnesium rod to the transport part 2232 which is in a horizontal state with the flipping part.

[0047] like Figure 3 As shown, preferably, in an exemplary embodiment of the present invention, the bearing part can be a rectangular parallelepiped shell, the engaging part is a retractable protrusion with a claw arranged on two opposite side surfaces A (first side surface) and B (second side surface) inside the shell, and the length of side surface A is longer than that of side surface B and the other two side surfaces, side surface A is the surface for bearing the magnesium rod located at the bottom after flipping, and the number of protrusions arranged on side surface B is less than that on side surface A. This arrangement not only saves materials and installation, but also facilitates the loading of the magnesium rod from the sawing device to the bearing part and the transfer of the magnesium rod from the bearing part to the transport part.

[0048] The transport part 2232 may be a device (such as a transport trolley, etc.) that can carry the magnesium rods transported from the tilting transport part 2231 and can move horizontally and / or be lifted up and down by a lifting mechanism. In the present invention, the transport part 2232 adjusts its position to receive the magnesium rods transported from the tilting transport part through horizontal movement and / or lifting movement, and then transports the magnesium rods to the outside of the system through horizontal movement and / or lifting movement.

[0049] like Figure 3As shown, in a preferred embodiment of the present invention, a clamping portion identical to that in the bearing portion is provided on the bearing surface of the transport portion 2232 for bearing the magnesium rod, and the transport portion adjusts its position by lifting and lowering and moving horizontally to be able to receive the magnesium rod transported from the bearing portion, for example, adjusting its bearing surface to be aligned and flush with the bearing surface A of the bearing portion for bearing the magnesium rod. In addition, in the present invention, preferably, the transport portion 2232 can carry a plurality of magnesium rods at a time, in which case a plurality of clamping portion columns are arranged side by side on the bearing surface, each clamping portion column is composed of a plurality of clamping portions and is used to clamp the magnesium rods so that they can be stably transported by the transport portion to prevent falling off and damage. The arrangement of such a plurality of clamping portion columns can transport the required number of magnesium rods to the outside of the system with fewer transport times or at one time, thereby reducing the number of transport times and improving production efficiency.

[0050] In addition, in another preferred embodiment of the present invention, the continuous casting system may further include a frame 23 (such as Figure 3 As shown in FIG. 1 ), the crystallization device 221, the sawing device 222 and the conveying device 223 can be installed on the frame to make each device more stable. In addition, a track that enables the transport part to run quickly can also be set on the frame to improve the conveying efficiency.

[0051] The continuous casting system of the present invention realizes the process of continuous casting of magnesium alloy without intermediate interruption, improves product quality, improves the production efficiency of deformed magnesium alloy, and reduces production costs.

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to allow ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous casting system for magnesium alloys, It is characterized in that The continuous casting system includes a smelting and supplying device and a continuous casting device, wherein the smelting and supplying device includes a smelting device, a heat preservation device connected to the smelting device, and a tundish, and the continuous casting device includes a crystallization device, a sawing device, and a conveying device, wherein: The smelting device is used to melt the magnesium alloy and provide the smelted magnesium alloy liquid to the insulation device. The insulation device keeps the magnesium alloy liquid warm and provides the magnesium alloy liquid to the tundish. The crystallization device is connected to the tundish and is used to receive the magnesium alloy liquid provided from the tundish and solidify it. The solidified magnesium alloy liquid becomes a magnesium rod and is separated from the crystallization device through the opening at the bottom of the crystallization device by gravity. When the magnesium rod reaches a predetermined length, it is sawed by the sawing device located at the bottom of the crystallization device. The sawed magnesium rod is transported to the outside of the continuous casting system via the conveying device.

2. The continuous casting system according to claim 1, It is characterized in that The crystallization device comprises a crystallizer, a crystallizer cover located on the upper part of the crystallizer, and an oscillating clamping device located on the lower part of the crystallizer and used for supporting the crystallizer.

3. The continuous casting system according to claim 2, It is characterized in that The oscillating clamping device comprises a crystallizer oscillator for supporting the crystallizer and a pulling and clamping part for pulling and clamping the magnesium rod separated from the crystallizer.

4. The continuous casting system according to claim 1, It is characterized in that The sawing device includes a measuring part, a sawing part, a cooling part, a sawdust collector, and a controller connected with the above components through a bus. The measuring part is used to measure the length of the magnesium rod passing through the sawing part and the temperature of the sawing part. When the length of the magnesium rod reaches a preset length, the measuring unit sends a signal to the controller so that the controller controls the sawing unit to saw, and when the measuring unit measures that the temperature of the sawing unit is higher than a preset temperature, the measuring unit sends a signal to the controller so that the controller controls the cooling unit to cool the sawing unit. The sawdust collector is used to collect sawdust generated by sawing of the sawing part.

5. The continuous casting system according to claim 4, It is characterized in that The controller can control the position of the sawdust collector so that the sawdust collector can be moved to an optimal position for sawdust collection.

6. The continuous casting system according to claim 1, It is characterized in that The conveying device comprises a tilting conveying part and a transporting part. The tilting conveying part is located at the lower part of the sawing device, and is used to receive the magnesium rods sawed by the sawing device and transfer the magnesium rods to the transporting part.

7. The continuous casting system according to claim 6, It is characterized in that The tilting conveying part includes a bearing part and a tilting mechanism. The bearing part is located at the lower part of the sawing device, and is used to receive and hold the magnesium rods cut by the sawing device. The tilting mechanism is connected to the bearing part to enable the bearing part to flip over, so as to transfer the received magnesium rods to the transport part. The bearing part is a shell with an upper opening, and a retractable elastic clamping part for clamping the magnesium rod is arranged inside the shell.

8. The continuous casting system according to claim 7, It is characterized in that The bearing part is a rectangular shell, the engaging part is a retractable protrusion with claws arranged on a first side surface and a second side surface opposite to each other inside the shell, and the length of the first side surface is longer than the second side surface and the other two side surfaces of the shell, the first side surface is the side surface located at the bottom after the bearing part is flipped over and used to bear the magnesium rod, and the number of protrusions arranged on the second side surface is less than that on the first side surface.

9. The continuous casting system according to claim 6, It is characterized in that The transport part can carry the magnesium rods transported from the tilting transport part, and can transport the carried magnesium rods to the outside of the continuous casting system by horizontal movement and / or up and down lifting.

10. The continuous casting system according to claim 1, It is characterized in that The continuous casting system further comprises a frame, and the crystallization device, the sawing device and the conveying device are mounted on the frame.

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