An induction heating flow channel for molten metal transfer

Abstract

This utility model discloses an induction heating trough for transferring molten metal, relating to the field of non-ferrous metal casting technology. The induction heating trough includes: a magnetic yoke shell, the interior of which is provided with a first refractory material layer, and a trough channel formed within the first refractory material layer; and an induction heating mechanism, comprising a copper tube winding, an inlet electrode, and an outlet electrode. The copper tube winding is embedded in the first refractory material layer, and the trough channel is located in the induction heating area of ​​the copper tube winding. Both ends of the copper tube extend outside the magnetic yoke shell, with the inlet end of the copper tube connected to an inlet electrode and the outlet end connected to an outlet electrode. This induction heating trough uses a coil formed by the copper tube winding to perform omnidirectional induction heating of the molten metal, ensuring that the molten metal maintains the required casting temperature after transfer and preventing localized overheating of the molten metal.

Description

Technical Field

[0001] This utility model belongs to the field of non-ferrous metal casting technology, specifically relating to an induction heating flow channel for metal melt transfer. Background Technology

[0002] In the non-ferrous metal casting process, melt transfer is inevitably involved. During the transfer process, the melt is exposed in the trough, and the temperature is much higher than the ambient temperature, resulting in serious heat loss, which causes the melt temperature to drop or even solidify.

[0003] In existing technologies, covering a conventional casting trough with insulating material can only slightly reduce the rate of temperature loss. While electrically heated casting troughs, with their added cover plates containing heating elements or resistance wires, compensate for melt temperature loss through radiant heat from the heated elements. However, this results in severe temperature stratification at the surface, middle, and bottom of the melt, sometimes leading to overheating of the surface layer. Furthermore, this method has an excessively long temperature adjustment time, requiring adjustments to the heating element or resistance wire power to alter the heat output, thus affecting the surface metal temperature. Heat is then transferred downwards through the surface metal, making the entire temperature adjustment process take over a minute, and this time increases with the flow rate of the melt in the trough. Both of these methods require heating the molten metal to a high temperature before transfer to ensure the metal remains at the required casting temperature after transfer. However, this increases gas absorption and oxidation, affecting melt quality. Therefore, reducing temperature loss during the transfer process has become a common concern in the entire non-ferrous metal casting industry. Utility Model Content

[0004] The purpose of this invention is to provide an induction heating flow channel for metal molten transfer that has a simple structure and a reasonable design in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] An induction heating flow channel for transferring molten metal includes:

[0007] The magnetic yoke shell has a first refractory material layer inside, and the first refractory material layer has flow channels.

[0008] An induction heating mechanism includes a copper tube winding, an inlet electrode, and an outlet electrode. The copper tube winding is embedded in a first refractory material layer. The flow channel is located in the induction heating area of ​​the copper tube winding. Both ends of the copper tube extend to the outside of the magnetic yoke shell. The inlet end of the copper tube is connected to an inlet electrode, and the outlet end of the copper tube is connected to an outlet electrode.

[0009] As a further optimization of this utility model, a heat insulation layer is provided between the first refractory material layer and the magnetic yoke shell.

[0010] As a further optimization of this utility model, the outer surface of the copper tube is coated with an insulating and anti-corrosion coating, and the outer surface of the insulating and anti-corrosion coating is wrapped with a second refractory material layer.

[0011] As a further optimization of this utility model, the copper tube has a hollow cavity structure, and the hollow cavity of the copper tube is used to load the cooling medium. The inlet end of the copper tube is provided with an inlet insulating valve, and the outlet end of the copper tube is provided with an outlet insulating valve.

[0012] As a further optimization of this utility model, the inlet electrode is fixedly connected to the first fixed side plate, the first fixed side plate is fixedly installed at the inlet end of the copper tube, and the outlet electrode is fixedly connected to the second fixed side plate, the second fixed side plate is fixedly installed at the outlet end of the copper tube.

[0013] As a further optimization of this utility model, a front connecting plate is fixedly provided at the front end of the magnetic yoke shell, and a rear connecting plate is fixedly connected at the rear end of the magnetic yoke shell.

[0014] As a further optimization of this utility model, a front temperature measuring hole and a rear temperature measuring hole are respectively opened on the upper part of the magnetic yoke shell. The front temperature measuring hole passes through the magnetic yoke shell, the heat insulation layer and the first refractory material layer in sequence to connect with the liquid inlet end of the flow channel. The rear temperature measuring hole passes through the magnetic yoke shell, the heat insulation layer and the first refractory material layer in sequence to connect with the liquid outlet end of the flow channel.

[0015] As a further optimization of this utility model, the first refractory material layer includes a movable part and a fixed part, the copper tube winding is embedded in the fixed part, and the movable part is slidably connected to the fixed part. The flow channel is opened in the movable part, and when the movable part is in the transfer position, there is a gap between the movable part and the fixed part.

[0016] As a further optimization of this utility model, a slider is fixedly connected to the moving part, and the slider is slidably connected in the slide rail opened in the fixed part. A spacer groove is opened on the circumferential side of the moving part, and a slide groove is opened at the corresponding position on the fixed part. An extrusion plate is slidably connected in the slide groove. A spring is fixedly connected to the side of the extrusion plate away from the spacer groove. One end of the spring is fixedly connected to the extrusion plate, and the other end of the spring is fixedly connected to the bottom wall of the slide groove.

[0017] The extrusion plate is driven by a shifting component. When the moving part is in the transfer position, the shifting component drives the extrusion plate to move outside the interval groove; when the moving part is in the cooling position, the shifting component drives the extrusion plate to move into the interval groove.

[0018] As a further optimization of this utility model, the displacement component includes a cover plate and an extrusion protrusion. The inlet and outlet ends of the flow channel are respectively provided with a cover plate. The cover plate has a through hole, which corresponds to the radial cross-sectional structure of the flow channel. An extrusion protrusion is provided on the side of the cover plate facing the moving part. The extrusion protrusion is correspondingly provided with an extrusion plate. An extrusion protrusion is provided on the extrusion plate.

[0019] When the moving part is in the transfer position, the cover plate is fixedly mounted on the fixed part, and the extrusion protrusion rubs against the extrusion plate through the extrusion protrusion, and the extrusion protrusion is located in the interval groove.

[0020] The present invention has at least the following beneficial effects: The induction heating trough for metal melt transfer provided by the present invention is equipped with an induction heating mechanism. The molten metal in the trough channel is induction heated in all directions by means of a coil composed of copper tube windings, so that the molten metal heats up rapidly. Moreover, the heating of the molten metal is no longer limited to the surface of the melt, ensuring uniform heating of the melt and avoiding local overheating that leads to increased gas absorption and oxidation.

[0021] Moreover, the copper tube is designed with a hollow cavity structure. The cooling medium circulating in the hollow cavity of the copper tube cools the copper tube, preventing it from melting or aging due to overheating, without affecting the induction heating of the molten metal in the flow channel by the copper tube winding coil.

[0022] Furthermore, the first refractory material layer with the flow channel is a movable part. The movable part is slidably installed in the fixed part. When the sliding installation area of ​​the movable part and the fixed part is sealed by the cover plate, the extrusion protrusion rubs against the extrusion plate, causing the extrusion plate to slide outside the spacer groove. This creates a gap between the movable part and the fixed part at the transfer position, reducing the contact area between the movable part and the fixed part, thereby keeping the movable part warm. Moreover, after the transfer is completed and the cover plate is removed, the extrusion plate returns to the spacer groove under the return action of the spring, increasing the contact area between the movable part and the fixed part. The fixed part continues to be cooled by the cooling medium circulated in the copper pipe, accelerating the cooling and temperature drop of the movable part.

[0023] Then, when the moving part is pulled out of the fixed part, the flow channel is opened, which makes it easier to scrape and clean the metal remaining in the flow channel. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0025] Figure 2 This is the utility model Figure 1A top-view sectional structural diagram;

[0026] Figure 3 This is a side view of the structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the copper tube of this utility model;

[0028] Figure 5 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0029] Figure 6 This is the utility model Figure 5 A schematic diagram of the side structure;

[0030] Figure 7 This is the utility model Figure 6 Enlarged view of point A in the middle;

[0031] Figure 8 This is the utility model Figure 5 Schematic diagram of the middle cover plate;

[0032] Figure 9 This is the utility model Figure 5 A schematic diagram of the structure of the central moving part.

[0033] In the diagram: 1. Magnetic yoke shell; 11. Front connecting plate; 12. Rear connecting plate; 13. Front temperature measuring hole; 14. Rear temperature measuring hole; 2. Insulation layer; 3. First refractory material layer; 4. Copper tube; 41. Insulating and anti-corrosion coating; 42. Second refractory material layer; 431. Inlet electrode; 432. First fixed side plate; 441. Outlet electrode; 442. Second fixed side plate; 45. Inlet insulating valve; 46. Outlet insulating valve; 5. Flow channel; 6. Cover plate; 61. Through hole; 62. Extrusion protrusion; 7. Moving part; 71. Interval groove; 72. Extrusion plate; 721. Extrusion protrusion; 73. Slide groove; 74. Spring; 75. Slider; 8. Fixed part. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Example 1

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses an induction heating flow channel for metal molten metal transfer, comprising:

[0037] The magnetic yoke shell 1 has a first refractory material layer 3 inside, and the first refractory material layer 3 has a flow channel 5.

[0038] An induction heating mechanism includes a copper tube 4 winding, an inlet electrode 431, and an outlet electrode 441. The copper tube 4 winding is embedded in the first refractory material layer 3. The flow channel 5 is located in the induction heating area of ​​the copper tube 4 winding. Both ends of the copper tube 4 extend to the outside of the magnetic yoke shell 1. The inlet end of the copper tube 4 is connected to the inlet electrode 431, and the outlet end of the copper tube 4 is connected to the outlet electrode 441.

[0039] By connecting the inlet electrode 431 and the outlet electrode 441 to the corresponding terminals of the electromagnetic controller, the winding of the copper tube 4 is energized by the electromagnetic controller. When the alternating current passes through the coil formed by the winding of the copper tube 4, an alternating magnetic field is generated in the molten metal within the flow channel 5. According to the law of electromagnetic induction, eddy currents will form inside the molten metal. According to Joule's law, the molten metal will generate Q = I due to the induced current. 2 The heat of Rt (where I is the induced current, R is the melt resistance, and t is the time it takes for the melt to pass through the magnetic field) causes the molten metal to heat up rapidly. Moreover, the heating of the molten metal is no longer limited to the surface of the melt, ensuring uniform heating of the melt and avoiding local overheating that leads to increased gas absorption and oxidation. Furthermore, this method can quickly adjust the temperature in the flow channel 5 according to the required temperature of the molten metal, thus improving the response speed.

[0040] For example, such as Figure 3 As shown, the inlet electrode 431 is fixedly connected to the first fixed side plate 432, which is fixedly installed at the inlet end of the copper tube 4. The outlet electrode 441 is fixedly connected to the second fixed side plate 442, which is fixedly installed at the outlet end of the copper tube 4.

[0041] It should be noted that the magnetic yoke shell 1 is a shell component with a specific magnetic circuit structure, usually made of a high-permeability material, mainly used to guide and confine the magnetic field. This concentrates the magnetic field generated by the copper tube 4 winding onto the molten metal in the heated flow channel 5, preventing magnetic field divergence and improving heating efficiency.

[0042] It should be further explained that the copper tube 4 winding uses pure copper tubes. Pure copper has high electrical conductivity. When high-frequency current passes through the pure copper tube winding, the Joule heat loss caused by resistance is much lower than that of materials such as steel and aluminum, ensuring that more electrical energy is converted into magnetic field energy rather than the winding itself generating heat. The copper tube 4 winding is embedded in the first refractory material layer 3, which is made by casting refractory material. For example, the first refractory material layer 3 is made by pre-casting non-stick aluminum.

[0043] For example, see [link to relevant documentation]. Figure 1 and Figure 2 A heat insulation layer 2 is provided between the first refractory material layer 3 and the magnetic yoke shell 1. The heat insulation layer 2 is made of heat insulation material, such as ceramic fiber blanket or aerogel felt, and is directly attached to the outer surface of the first refractory material layer 3 to block high temperature conduction.

[0044] For example, see [link to relevant documentation]. Figure 4 The outer surface of the copper tube 4 is coated with an insulating and anti-corrosion coating 41, and the outer surface of the insulating and anti-corrosion coating 41 is wrapped with a second refractory material layer 42. The insulating and anti-corrosion coating 41 can insulate the copper tube 4 and prevent corrosion. For example, the insulating and anti-corrosion coating 41 can be a high-temperature ceramic coating or an organosilicon resin coating, which is not limited here. The second refractory material layer 42 is wrapped around the outer ring of the copper tube 4 and plays a buffering role to prevent vibration during start-up. For example, the second refractory material layer 42 can be a lightweight refractory fiber blanket or a mullite lightweight castable, which is not limited here. This is to reduce vibration in dense areas of the copper tube 4, such as between the coil turns formed by the copper tube 4, and significantly improve the reliability and life of the flow channel.

[0045] Example 2

[0046] Based on Example 1, continue to refer to Figure 2 , Figure 3 and Figure 4 The copper tube 4 has a hollow cavity structure, and the hollow cavity of the copper tube 4 is used to load the cooling medium. The inlet end of the copper tube 4 is provided with an inlet insulating valve 45, and the outlet end of the copper tube 4 is provided with an outlet insulating valve 46.

[0047] By opening the outlet insulating valve 46 and the inlet insulating valve 45, the cooling medium circulates into the hollow cavity of the copper tube 4. Then, the winding of the copper tube 4 is energized. When the copper tube 4 generates Joule heat due to the alternating current, the cooling medium helps to remove the heat, thus helping to cool the copper tube 4 and ensuring its temperature remains stable within a safe range (e.g., <60℃), preventing it from melting or aging due to overheating. It should be noted that water is used as the cooling medium and circulates within the copper tube 4. The cooling medium cools the copper tube 4 without affecting the induction heating of the molten metal in the flow channel 5 by the winding coil of the copper tube 4.

[0048] For example, see [link to relevant documentation]. Figure 1 and Figure 2 The front end of the magnetic yoke shell 1 is fixedly provided with a front end connecting plate 11, and the rear end of the magnetic yoke shell 1 is fixedly connected with a rear end connecting plate 12.

[0049] by Figure 2 Taking the orientation shown as an example, the left end of the magnetic yoke shell 1 is the front end of the magnetic yoke shell 1, and the right end of the magnetic yoke shell 1 is the rear end of the magnetic yoke shell 1. The molten metal to be transferred needs to be injected from the flow channel 5 at the front end of the magnetic yoke shell 1, and then flow out from the flow channel 5 at the rear end of the magnetic yoke shell 1. In use, the front connecting plate 11 is connected to the interface where the molten metal enters the flow channel 5, and the rear connecting plate 12 is connected to the interface where the molten metal flows out of the flow channel 5, and fixed with screws to complete the installation of the flow channel. This ensures that the flow channel 5 does not come into contact with the outside air during the transfer process, reducing the amount of oxidation of the molten metal.

[0050] For example, see [link to relevant documentation]. Figure 1 The magnetic yoke shell 1 has a front-end temperature measuring hole 13 and a rear-end temperature measuring hole 14 respectively on its upper part. The front-end temperature measuring hole 13 passes through the magnetic yoke shell 1, the heat insulation layer 2, and the first refractory material layer 3 in sequence, and is connected to the liquid inlet end of the flow channel 5. The rear-end temperature measuring hole 14 passes through the magnetic yoke shell 1, the heat insulation layer 2, and the first refractory material layer 3 in sequence, and is connected to the liquid outlet end of the flow channel 5. The temperature measuring end of the temperature measuring instrument is inserted into the front-end temperature measuring hole 13 and the rear-end temperature measuring hole 14 to detect the melt temperature at the liquid inlet end and the liquid outlet end of the flow channel 5, respectively. This ensures that the temperature of the molten metal is uniform during the transfer process and that the molten metal meets the temperature requirements when flowing out of the liquid outlet end. If an abnormal temperature is detected, it is convenient for the staff to adjust the current of the copper tube 4 winding in time to control the temperature of the molten metal.

[0051] Example 3

[0052] Based on Example 2, please continue reading Figure 5 , Figure 6 and Figure 7 The first refractory material layer 3 includes a movable part 7 and a fixed part 8. The copper tube 4 winding is embedded in the fixed part 8. The movable part 7 is slidably connected in the fixed part 8. The flow channel 5 is opened in the movable part 7. When the movable part 7 is in the transfer position, there is a gap between the movable part 7 and the fixed part 8.

[0053] By providing a gap between the moving part 7 and the fixed part 8 when in the transfer position, the direct contact area between the moving part 7 and the fixed part 8 is reduced. Since the thermal conductivity of the air in the gap is lower than that of the fixed part 8, the gap is used to insulate the moving part 7. Furthermore, because a flow channel 5 is formed in the moving part 7, when the transfer is finished, the moving part 7 can be moved out of the fixed part 8, opening the upper end of the flow channel 5. Figure 9 The flow channel 5 shown is U-shaped, which facilitates the cleaning and scraping of residual metal in the flow channel 5.

[0054] For example, see [link to relevant documentation]. Figure 7 A slider 75 is fixedly connected to the moving part 7. The slider 75 is slidably connected in the slide rail opened in the fixed part 8. A spacer groove 71 is opened on the circumferential side of the moving part 7. A slide groove 73 is opened at the corresponding position on the fixed part 8. A pressing plate 72 is slidably connected in the slide groove 73. A spring 74 is fixedly connected to the side of the pressing plate 72 away from the spacer groove 71. One end of the spring 74 is fixedly connected to the pressing plate 72, and the other end of the spring 74 is fixedly connected to the bottom wall of the slide groove 73.

[0055] The extrusion plate 72 is driven by a displacement assembly. When the moving part 7 is in the transfer position, the displacement assembly drives the extrusion plate 72 to move outside the spacer groove 71, such as... Figure 7 As shown, at this time, the gap groove 71 between the moving part 7 and the extrusion plate 72 forms the gap area between the moving part 7 and the fixed part 8. When the moving part 7 is in the cooling position, which indicates that the flow channel is stopped and needs to be cleaned, the flow channel is disconnected from the interface of the molten metal entering the flow channel 5 and the interface of the molten metal flowing out of the flow channel 5. The shifting component drives the extrusion plate 72 to shift into the gap groove 71, so that the extrusion plate 72 directly contacts the moving part 7 through the gap groove 71, thereby increasing the contact area between the moving part 7 and the fixed part 8. The continuous circulation supply of cooling medium in the copper pipe 4 improves the heat dissipation efficiency of the moving part 7 and accelerates the heat dissipation of the moving part 7.

[0056] For example, see [link to relevant documentation]. Figure 8The displacement assembly includes a cover plate 6 and an extrusion protrusion 62. The inlet and outlet ends of the flow channel 5 are respectively provided with a cover plate 6. The cover plate 6 has a through hole 61, which corresponds to the radial cross-sectional structure of the flow channel 5. The side of the cover plate 6 facing the moving part 7 is provided with an extrusion protrusion 62, which is correspondingly provided with an extrusion plate 72. The extrusion plate 72 is provided with an extrusion protrusion 721.

[0057] When the moving part 7 is in the transfer position, the cover plate 6 is fixedly mounted on the fixed part 8 by bolts. At this time, the through hole 61 is connected to the flow channel 5. The extrusion protrusion 62 rubs against the extrusion plate 72 through the extrusion protrusion 721, and the extrusion protrusion 62 is located in the interval groove 71, which causes the extrusion plate 72 to compress the spring 74 and slide to the outside of the interval groove 71, so that the interval groove 71 is in a gap state, which helps to keep the moving part 7 in the transfer position warm.

[0058] It should be noted that, in the use of this induction heating trough for molten metal transfer, the cleaned moving part 7 is slidably installed in the fixed part 8, and the two ends of the moving part 7 are covered by the cover plate 6. At this time, the extrusion protrusion 62 on the cover plate 6 extrudes the extrusion plate 72 through the extrusion protrusion 721, causing the extrusion plate 72 to compress the spring 74, and causing the extrusion plate 72 to slide outside the spacer groove 71, thereby reducing the contact area between the moving part 7 and the fixed part 8. Then, the cover plate 6 is fixedly installed on the fixed part 8 by bolts. Then, the front end connecting plate 11 is connected to the interface of the molten metal entering the trough channel 5, and the rear end connecting plate 12 is connected to the interface of the molten metal flowing out of the trough channel 5 and fixed with screws to complete the installation of the trough.

[0059] Open the inlet insulating valve 45 and the outlet insulating valve 46 to circulate the cooling medium into the copper tube 4. Then, start the power supply to energize the winding of the copper tube 4, so as to generate an induced magnetic field in the flow channel 5. This induced heating of the molten metal injected into the flow channel 5 will promote the molten metal to maintain a uniform temperature during the transfer process. The temperature measuring end of the temperature measuring instrument is inserted into the front temperature measuring hole 13 and the rear temperature measuring hole 14 to detect the temperature of the molten metal at the inlet and outlet of the flow channel 5, respectively. This ensures that the current of the winding of the copper tube 4 can be adjusted in time according to the actual measured temperature during the transfer process, and the temperature of the molten metal is controlled.

[0060] After the transfer is completed, when it is necessary to clean the flow channel 5, simply remove the cover plate 6. At this time, under the reset action of the spring 74, the pressing plate 72 is reset into the spacer groove 71 to increase the contact area between the moving part 7 and the fixed part 8. With the continuous circulation supply of the cooling medium in the copper tube 4 winding, the moving part 7 is cooled quickly. After the cooling is completed, pulling the moving part 7 outward will open the flow channel 5, making it convenient for workers to scrape and clean the residual metal in the flow channel 5.

[0061] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An induction heating launder for transfer of a metal melt, characterized in that, include: The magnetic yoke shell (1) has a first refractory material layer (3) inside, and a flow channel (5) is opened in the first refractory material layer (3); An induction heating mechanism is provided, comprising a copper tube (4) winding, an inlet electrode (431), and an outlet electrode (441). The copper tube (4) winding is embedded in a first refractory material layer (3). The flow channel (5) is located in the induction heating area of ​​the copper tube (4) winding. Both ends of the copper tube (4) extend to the outside of the magnetic yoke shell (1). The inlet end of the copper tube (4) is connected to the inlet electrode (431), and the outlet end of the copper tube (4) is connected to the outlet electrode (441).

2. The induction heated stream channel for metal melt transfer according to claim 1, characterized in that A heat insulation layer (2) is provided between the first refractory material layer (3) and the magnetic yoke shell (1).

3. The induction heated stream channel for metal melt transfer according to claim 1, characterized in that, The outer surface of the copper tube (4) is coated with an insulating and anti-corrosion coating (41), and the outer surface of the insulating and anti-corrosion coating (41) is wrapped with a second refractory material layer (42).

4. The induction heated stream channel for metal melt transfer according to claim 1 or 3, characterized in that The copper tube (4) has a hollow cavity structure, and the hollow cavity of the copper tube (4) is used to load the cooling medium. The inlet end of the copper tube (4) is provided with an inlet insulating valve (45), and the outlet end of the copper tube (4) is provided with an outlet insulating valve (46).

5. The induction heated stream channel for transferring a metal melt according to claim 1, wherein The inlet electrode (431) is fixedly connected to the first fixed side plate (432), which is fixedly installed at the inlet end of the copper tube (4). The outlet electrode (441) is fixedly connected to the second fixed side plate (442), which is fixedly installed at the outlet end of the copper tube (4).

6. The induction heating flow channel for molten metal transfer according to claim 1, characterized in that, The front end of the magnetic yoke shell (1) is fixedly provided with a front end connecting plate (11), and the rear end of the magnetic yoke shell (1) is fixedly connected with a rear end connecting plate (12).

7. The induction heating flow channel for molten metal transfer according to claim 2, characterized in that, The magnetic yoke shell (1) has a front temperature measuring hole (13) and a rear temperature measuring hole (14) respectively on its upper part. The front temperature measuring hole (13) passes through the magnetic yoke shell (1), the heat insulation layer (2) and the first refractory material layer (3) in sequence to connect the front temperature measuring hole (13) with the liquid inlet end of the flow channel (5). The rear temperature measuring hole (14) passes through the magnetic yoke shell (1), the heat insulation layer (2) and the first refractory material layer (3) in sequence to connect the rear temperature measuring hole (14) with the liquid outlet end of the flow channel (5).

8. The induction heating flow channel for molten metal transfer according to claim 1, characterized in that, The first refractory material layer (3) includes a movable part (7) and a fixed part (8). The copper tube (4) winding is embedded in the fixed part (8). The movable part (7) is slidably connected in the fixed part (8). The flow channel (5) is opened in the movable part (7). When the movable part (7) is in the transfer position, there is a gap between the movable part (7) and the fixed part (8).

9. The induction heating flow channel for molten metal transfer according to claim 8, characterized in that, A slider (75) is fixedly connected to the moving part (7), and the slider (75) is slidably connected in the slide rail opened in the fixed part (8). A spacer groove (71) is opened on the circumferential side of the moving part (7), and a slide groove (73) is opened at the corresponding position on the fixed part (8). A pressing plate (72) is slidably connected in the slide groove (73). A spring (74) is fixedly connected to the side of the pressing plate (72) away from the spacer groove (71). One end of the spring (74) is fixedly connected to the pressing plate (72), and the other end of the spring (74) is fixedly connected to the bottom wall of the slide groove (73). The extrusion plate (72) is connected to a shifting component. When the moving part (7) is in the transfer position, the shifting component drives the extrusion plate (72) to move outside the spacer groove (71). When the moving part (7) is in the cooling position, the shifting component drives the extrusion plate (72) to move into the spacer groove (71).

10. An induction heating flow channel for transferring molten metal according to claim 9, characterized in that, The displacement assembly includes a cover plate (6) and an extrusion protrusion (62). The inlet and outlet ends of the flow channel (5) are respectively provided with a cover plate (6). The cover plate (6) has a through hole (61) which corresponds to the radial cross-sectional structure of the flow channel (5). The side of the cover plate (6) facing the moving part (7) is provided with an extrusion protrusion (62). The extrusion protrusion (62) is correspondingly provided with an extrusion plate (72). The extrusion plate (72) is provided with an extrusion protrusion (721). When the moving part (7) is in the transfer position, the cover plate (6) is fixedly mounted on the fixed part (8), the extrusion protrusion (62) rubs against the extrusion plate (72) through the extrusion protrusion (721), and the extrusion protrusion (62) is located in the interval groove (71).

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