Vacuum induction melting furnace

Abstract

The utility model provides a kind of vacuum induction smelting furnace, belong to alloy smelting technical field, including feeding chamber, furnace body and cooling chamber connected in turn;Feeding chamber is equipped with feed inlet, feeding chamber is equipped with inlet between furnace body, furnace body is equipped with discharge outlet between cooling chamber;Cooling chamber is equipped with material taking opening;Inlet is rotatably provided with first valve, first valve can open inlet and block inlet;Discharge outlet is rotatably provided with second valve, second valve can open discharge outlet and block discharge outlet;When first valve is opened, feeding chamber is fed to furnace body, and the vacuum degree of feeding chamber is equal with the vacuum degree of furnace body;When second valve is opened, furnace body is fed to cooling chamber, and the vacuum degree of cooling chamber is equal with the vacuum degree of furnace body.The vacuum induction smelting furnace provided by the utility model improves alloy smelting efficiency, reduces the use time of vacuumizing device, and reduces energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of alloy smelting technology, and more specifically, it relates to a vacuum induction melting furnace. Background Technology

[0002] A vacuum induction melting furnace is a smelting equipment that uses electromagnetic induction to heat and melt metal materials in a vacuum environment. It is mainly used for melting high-purity, high-performance metals and alloys, and is especially suitable for materials that are sensitive to gases such as oxygen, nitrogen, and hydrogen.

[0003] Vacuum induction melting furnaces typically involve three processes: charging, melting, and casting / cooling. Before melting, the furnace must be evacuated to ensure a vacuum state within the furnace cavity during the melting process. Since only one piece of raw material can be melted at a time, the furnace must be evacuated again after casting, cooling, and alloy removal before the next melting cycle can begin.

[0004] This repeated vacuuming process results in low melting efficiency and poor production continuity. Furthermore, the frequent activation of the induction heating system surrounding the crucible leads to high power consumption during production. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum induction melting furnace, which aims to solve the technical problems of low alloy melting efficiency and high power consumption in the existing technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a vacuum induction melting furnace, comprising a feeding chamber, a furnace body, and a cooling chamber connected in sequence;

[0007] The feeding chamber is provided with a feeding port, the feeding chamber and the furnace body are provided with an inlet, and the furnace body and the cooling chamber are provided with an outlet; the cooling chamber is provided with a material removal port;

[0008] A first valve is rotatably installed at the feed inlet. The first valve can open the feed inlet and close the feed inlet to make the feed chamber communicate with / isolate the inner cavity of the furnace.

[0009] A second valve is rotatably installed at the discharge port. The second valve can open the discharge port and block the discharge port to make the inner cavity of the furnace body connected to / isolated from the cooling chamber.

[0010] When the first valve is opened, the feeding chamber feeds material to the furnace body, and the vacuum degree of the feeding chamber is equal to the vacuum degree of the furnace body; when the second valve is opened, the furnace body feeds material to the cooling chamber, and the vacuum degree of the cooling chamber is equal to the vacuum degree of the furnace body.

[0011] In one possible implementation, the cooling chamber has a plurality of cooling cylinders for containing the liquid alloy.

[0012] In some embodiments, the cooling chamber is provided with a conveying mechanism, and a plurality of cooling cylinders are disposed on the conveying mechanism; the conveying mechanism is used to drive the plurality of cooling cylinders to move, and each cooling cylinder can move sequentially to the position corresponding to the second valve, and can also move sequentially to the position corresponding to the material inlet.

[0013] In some embodiments, the conveying mechanism extends in a straight line or is distributed in a ring.

[0014] In one possible implementation, the feeding chamber, the furnace body, and the cooling chamber are arranged sequentially from top to bottom; or the feeding chamber, the furnace body, and the cooling chamber are arranged sequentially along a horizontal direction.

[0015] In some embodiments, the feeding chamber, the furnace body, and the cooling chamber are arranged sequentially from top to bottom; a crucible is rotatably mounted inside the furnace body, the crucible being located directly below the feeding port and directly above the discharging port.

[0016] In some embodiments, the feed inlet includes a first through hole disposed on the bottom surface of the feed chamber and a first mounting hole disposed on the top surface of the furnace body, wherein the first through hole and the first mounting hole are vertically corresponding, and the first valve is rotatably disposed at the first mounting hole;

[0017] The discharge port includes a second mounting hole on the bottom surface of the furnace body and a second through hole on the top surface of the cooling chamber. The second mounting hole and the second through hole are vertically corresponding. The second valve is rotatably mounted at the second mounting hole.

[0018] In some embodiments, the feed inlet is provided with a feed valve, and the discharge outlet is provided with a discharge valve.

[0019] In one possible implementation, the feeding chamber is equipped with an automatic feeding mechanism that feeds materials into the feeding chamber at a preset frequency.

[0020] In one possible implementation, the vacuum induction melting furnace further includes an electrical control module and a vacuum pumping device. The vacuum pumping device is connected to the feeding chamber, the furnace body, and the cooling chamber, respectively. The electrical control module is electrically connected to the first valve, the second valve, and the vacuum pumping device.

[0021] The beneficial effects of the vacuum induction melting furnace provided by this utility model are as follows: Compared with the prior art, the feeding chamber, furnace body and cooling chamber are connected in sequence. By switching the first valve, the feeding chamber can be connected to / isolated from the inner cavity of the furnace body. By switching the second valve, the inner cavity of the furnace body can be connected to / isolated from the cooling chamber, thereby ensuring that the inner cavity of the furnace body is always in a vacuum state. It also allows the feeding, melting and cooling steps of different groups of raw materials to be carried out simultaneously, eliminating the repeated vacuuming and independent cooling processes of the furnace body in the traditional process, improving the alloy melting efficiency, reducing the vacuuming time and reducing energy consumption. Moreover, the induction heating system in the furnace body continuously heats without repetition, further reducing energy consumption. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the vacuum induction melting furnace provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of a vacuum induction melting furnace provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Feed chamber; 11. Feed valve;

[0027] 2. Furnace body;

[0028] 3. Cooling chamber; 31. Cooling cylinder; 32. Conveying mechanism; 33. Material handling valve;

[0029] 4. First valve;

[0030] 5. Second valve;

[0031] 6. Crucible;

[0032] 7. Inlet; 71. First through hole; 72. First mounting hole;

[0033] 8. Discharge port; 81. Second through hole; 82. Second mounting hole. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] A vacuum induction melting furnace is a key piece of equipment used to melt metals and smelt high-quality alloys. The application of a traditional vacuum induction melting furnace typically involves three steps: charging, melting, and casting / cooling.

[0036] Before the charging stage, raw material preparation is required. Based on the target alloy composition, accurately weigh high-purity metals (such as nickel, cobalt, titanium, aluminum, etc.) or intermediate alloys (such as NiCr, NiAl, etc.). For cold raw materials, solid raw materials are directly charged into the crucible of the vacuum induction melting furnace (suitable for common alloys). For hot raw materials, pre-melted molten metal is poured into the crucible (suitable for high-melting-point or reactive metals).

[0037] The furnace contains the aforementioned crucible, which is surrounded by an induction heating system, typically a copper induction coil. A medium-to-high frequency alternating current is applied to generate an alternating electromagnetic field. This field penetrates conductive materials, inducing eddy currents within the metal. These eddy currents generate Joule heating due to the metal's resistance, causing the metal itself to heat up.

[0038] The crucible can be a conductive crucible, such as a graphite crucible, as graphite itself is a conductor and can be directly heated by induction. It can also be a non-conductive crucible, such as a ceramic crucible, in which the crucible itself is not conductive and heating relies on the eddy currents of the internal metal charge to generate heat, which is then conducted to heat the crucible.

[0039] After the charging process is completed, the furnace body of the vacuum melting furnace needs to be evacuated. Once the evacuation is complete, the induction heating system is activated, and the alternating magnetic field generates eddy currents inside the metal, causing the metal to self-heat and gradually melt.

[0040] After the raw materials are melted, they are solidified in a specific direction, or the molten alloy is poured into a cooling cylinder to form ingots, bars, or precision castings. After pouring, the alloy is slowly cooled, and finally the furnace door is opened to remove the alloy casting.

[0041] Specifically, taking the entire smelting process of a certain alloy raw material as an example, the process involves 5 minutes of charging, 50 minutes of vacuuming, 30 minutes of heating, and 60 minutes of pouring and cooling, totaling 145 minutes, which is quite lengthy. For continuous production, smelting multiple alloy pieces requires repeating the above charging, vacuuming, heating, pouring, and cooling processes sequentially. For example, smelting 10 pieces of raw material would take 1450 minutes, resulting in extremely low smelting efficiency and poor production continuity. Furthermore, the induction heating system is frequently activated during each heating cycle, leading to high power consumption.

[0042] To resolve the above issues, please refer to the following: Figure 1 and Figure 2 The vacuum induction melting furnace provided by this utility model will now be described. The vacuum induction melting furnace includes a feeding chamber 1, a furnace body 2, and a cooling chamber 3 connected in sequence; the feeding chamber 1 is provided with a feeding port, and an inlet 7 is provided between the feeding chamber 1 and the furnace body 2; an outlet 8 is provided between the furnace body 2 and the cooling chamber 3; the cooling chamber 3 is provided with a material removal port; a first valve 4 is rotatably provided at the inlet 7, which can open the inlet 7 and block the inlet 7, so as to connect / isolate the feeding chamber 1 and the inner cavity of the furnace body 2; a second valve 5 is rotatably provided at the outlet 8, which can open the outlet 8 and block the outlet 8, so as to connect / isolate the inner cavity of the furnace body 2 and the cooling chamber 3.

[0043] When the first valve 4 is opened, the feeding chamber 1 feeds material to the furnace body 2, and the vacuum degree of the feeding chamber 1 is equal to that of the furnace body 2; when the second valve 5 is opened, the furnace body 2 feeds material to the cooling chamber 3, and the vacuum degree of the cooling chamber 3 is equal to that of the furnace body 2.

[0044] The feeding chamber 1, furnace body 2, and cooling chamber 3 are connected in sequence. This can be understood as the three being connected in sequence along the same path. That is, the outlet of the feeding chamber 1 connects to the inlet of the furnace body 2, and the outlet of the furnace body 2 connects to the inlet of the cooling chamber 3. The inlet 7 can be regarded as a combination of the outlet of the feeding chamber 1 and the inlet of the furnace body 2, and the outlet 8 can be regarded as a combination of the outlet of the furnace body 2 and the inlet of the cooling chamber 3.

[0045] It should be noted that the feeding chamber 1, furnace body 2, and cooling chamber 3 are also connected to vacuum pumping devices. These devices can be composed of multi-stage vacuum pumps to meet the evacuation requirements at different pressure stages. Each of the feeding chamber 1, furnace body 2, and cooling chamber 3 is independently connected to a multi-stage vacuum pump, and the vacuum pumping device can simultaneously evacuate the feeding chamber 1, furnace body 2, and cooling chamber 3.

[0046] Inside the furnace body 2, there is also a crucible 6. The crucible 6 is surrounded by an induction heating system, which is generally a copper induction coil. When a medium-to-high frequency alternating current is passed through it, an alternating electromagnetic field is generated. The alternating electromagnetic field penetrates the conductive material and induces eddy currents inside the metal. The eddy currents generate Joule heating due to the resistance of the metal, causing the metal itself to heat up.

[0047] Specifically, the vacuum induction melting furnace provided in this embodiment is used in accordance with the following steps:

[0048] S1: Place the raw material into the feeding chamber 1; evacuate the feeding chamber 1, the furnace body 2 of the vacuum melting furnace, and the cooling chamber 3 respectively, so that the vacuum degree of the feeding chamber 1, the vacuum degree of the furnace body 2, and the vacuum degree of the cooling chamber 3 are equal.

[0049] S2: Open the first valve 4 to connect the feeding chamber 1 with the inner cavity of the furnace body 2; place the raw material into the crucible 6 inside the inner cavity of the furnace body 2; close the first valve 4;

[0050] S3: Crucible 6 heats the raw material;

[0051] S4: After the raw material is heated, a liquid alloy is formed. Open the second valve 5 and pour the heated liquid alloy into the cooling chamber 3. Then close the second valve 5.

[0052] S5: Cooling chamber 3 cools the liquid alloy to form an alloy; at the same time, the first valve 4 is opened to place the next piece of raw material in the feeding chamber 1 into the crucible 6 inside the furnace body 2; the first valve 4 is closed.

[0053] S6: Repeat steps S3, S4 and S5, with steps S3 and S5 performed simultaneously, until multiple alloy blocks are melted.

[0054] The feeding chamber 1 is used for preliminary loading. Its function is to place raw materials. Preliminary loading can be done by loading one piece of raw material or multiple pieces of raw material. If the feeding chamber 1 can only be loaded with one piece of raw material, or if there is only one piece of raw material left in the feeding chamber 1, then in step S3, while the crucible 6 is heating the raw material, the vacuum of the feeding chamber 1 is broken, and the next piece or several pieces of raw material are added to the feeding chamber 1. The vacuum of the feeding chamber 1 is then evacuated again so that the vacuum degree of the feeding chamber 1 is equal to the vacuum degree of the furnace body 2.

[0055] The feeding chamber 1 is used for initial loading. Its function is to place raw materials. Therefore, the internal structure of the feeding chamber 1 does not need to be too large. With a small chamber volume, the corresponding vacuuming time is less, and this time is much less than the vacuuming time of the furnace body 2.

[0056] Specifically, in step S1, the feeding chamber 1, furnace body 2, and cooling chamber 3 are evacuated simultaneously. This means the three evacuation processes are performed concurrently, resulting in the longest evacuation time among the three, specifically the evacuation time for furnace body 2, which is 50 minutes. It should be noted that furnace body 2 and cooling chamber 3 can be evacuated first, while simultaneously feeding the feeding chamber 1, followed by evacuation of the feeding chamber 1. Therefore, the feeding time for feeding chamber 1 can be omitted. In other words, step S1 takes 50 minutes.

[0057] Since the feeding chamber 1, furnace body 2, and cooling chamber 3 are simultaneously evacuated to the same vacuum level, pressure changes during subsequent raw material transfer are avoided, thereby reducing the repetitive work of the vacuuming device.

[0058] Step S2 mainly involves loading the furnace body 2 with a loading time of 5 minutes.

[0059] Step S3 is used to complete the heating of the raw materials, and the heating time is 30 minutes.

[0060] Step S4 is used to complete the feeding of material into the cooling chamber 3, that is, to pour the liquid raw material into the cooling chamber 3.

[0061] Step S5 is used to simultaneously cool the liquid alloy and add another piece of raw material into furnace 2. Specifically, the liquid alloy pouring and cooling time is 60 minutes, while the process of loading the material into furnace 2 can be completed within the aforementioned cooling time. Therefore, the total time for steps S4 and S5 is 60 minutes.

[0062] For melting one piece of raw material, the above time is 145 minutes, which is the same as the existing time. However, for melting multiple pieces of raw material, that is, when completing step S6, the pouring and cooling steps of the previous piece of raw material can be carried out simultaneously with the heating steps of the next piece or several pieces of raw material, and multiple pieces of raw material can be cooled simultaneously in cooling chamber 3. Therefore, the pouring and cooling process and the heating process can be carried out simultaneously, and only the last group of liquid alloys needs to be poured and cooled separately.

[0063] So, taking the melting of 10 raw materials as an example, the required time is the time for step S1 + the time for step S2 + the heating time for the 10 raw materials in step S3 + the time for pouring and cooling the last raw material in steps S4 and S5, which is 50 + 5 + 30 * 10 + 60 = 415 minutes. Compared with the existing technology of 1450 minutes, the melting time is greatly reduced and the work efficiency is improved.

[0064] Compared with the prior art, the vacuum induction melting furnace provided by this invention has a feeding chamber 1, a furnace body 2, and a cooling chamber 3 connected in sequence. By switching the first valve 4, the feeding chamber 1 can be connected to / isolated from the inner cavity of the furnace body 2. By switching the second valve 5, the inner cavity of the furnace body 2 can be connected to / isolated from the cooling chamber 3. This ensures that the inner cavity of the furnace body 2 is always in a vacuum state, and allows the feeding, melting, and cooling steps of different groups of raw materials to be carried out simultaneously. This eliminates the repeated vacuuming and independent cooling processes of traditional processes, improves alloy melting efficiency, reduces the usage time of the vacuuming device, and reduces energy consumption. Furthermore, the induction heating system in the furnace body 2 provides continuous heating without the need for repeated heating, further reducing energy consumption.

[0065] In some embodiments, the cooling chamber 3 described above may be as follows: Figure 2 The structure shown is described in the following document. Figure 2 The cooling chamber 3 has multiple cooling cylinders 31, which are used to contain liquid alloy.

[0066] Specifically, the cooling cylinder 31 is used to achieve casting and shaping. Each cooling cylinder 31 can be moved sequentially to a position corresponding to the second valve 5, so as to pour liquid alloy into the cooling cylinder 31. After the liquid alloy is poured into the cooling cylinder 31, the second valve 5 is closed, and the cooling chamber 3 begins to perform its cooling function, causing the liquid alloy to solidify and take shape.

[0067] During the cooling process, multiple cooling cylinders 31 perform cooling operations simultaneously, greatly improving production efficiency. Moreover, since each cooling cylinder 31 can move sequentially to the position corresponding to the second valve 5, this ensures that the liquid alloy can be accurately poured into each cooling cylinder 31, guaranteeing the consistency of product quality.

[0068] In step S4, liquid alloy is poured into each cooling cylinder 31, and after each group of liquid alloys is cooled for a preset time, the cooling chamber 3 is opened, all the alloys are taken out, the cooling chamber 3 is closed, and the cooling chamber 3 is evacuated so that the vacuum degree of the cooling chamber 3 is equal to the vacuum degree of the furnace body 2.

[0069] The design of multiple cooling cylinders 31 allows for the simultaneous cooling of multiple batches of liquid alloy, breaking through the limitations of traditional single cooling cylinders 31 which require independent cooling and separate vacuuming after alloy removal. This reduces the number of vacuuming operations and lowers the energy consumption of the vacuuming device. Furthermore, the cooling of multiple liquid alloys in step S4 and the heating of raw materials in step S3 can be carried out simultaneously. Except for the removal of all alloys in the last batch, the removal of all alloys in other batches and the vacuuming of the feed chamber 1 are not independent processes, greatly improving smelting efficiency.

[0070] In some embodiments, the cooling chamber 3 described above may also employ, for example... Figure 2 The structure shown is described in the following document. Figure 2 The cooling chamber 3 is equipped with a conveying mechanism 32, and multiple cooling cylinders 31 are mounted on the conveying mechanism 32. The conveying mechanism 32 is used to drive the multiple cooling cylinders 31 to move. Each cooling cylinder 31 can move sequentially to the position corresponding to the second valve 5, and can also move sequentially to the position corresponding to the material inlet.

[0071] The conveying mechanism 32 can be a conveyor belt or a turntable. The cooling cylinder 31 is mounted on the conveyor belt or turntable, which drives the cooling cylinder 31 to move. The conveyor belt or turntable, the first valve 4, the second valve 5, and the vacuum device are all electrically connected to the electronic control module.

[0072] Each cooling cylinder 31 can be automatically moved under the control of the electronic control module, so as to achieve precise displacement of the cooling cylinder 31 and ensure that each cooling cylinder 31 can reach the pouring station, cooling station and discharge station in sequence, so that the pouring and cooling steps of different cooling cylinders 31 can be carried out simultaneously without affecting each other.

[0073] In addition, after the cooling chamber 3 is opened, each cooling cylinder 31 can move sequentially to a position corresponding to the material inlet of the cooling chamber 3, so that all alloys can be taken out in sequence. This taking-out action can be completed by a robotic arm. Since each cooling cylinder 31 can move sequentially and correspond to the material inlet, the opening structure of the material inlet only needs to be large enough for the robotic arm to reach in and grip the alloy for taking out.

[0074] Specifically, in step S4, liquid alloy is poured into each cooling cylinder 31, and after each group of liquid alloys has been cooled for a preset time, the material outlet of the cooling chamber 3 is opened, each cooling cylinder 31 is moved sequentially to the position corresponding to the material outlet of the cooling chamber 3, multiple alloys are taken out in sequence, the material outlet of the cooling chamber 3 is closed, and the cooling chamber 3 is evacuated so that the vacuum degree of the cooling chamber 3 is equal to the vacuum degree of the furnace body 2.

[0075] The operation of opening / closing the feed port is equivalent to the operation of opening / closing the cooling chamber 3, which simplifies the operation of opening and closing the cooling chamber 3. Moreover, after the feed port is opened, the contents of the cooling chamber 3 will not be exposed too much, which greatly reduces the infiltration of external gas, avoids alloy oxidation and composition contamination, and reduces temperature fluctuations. Furthermore, by replacing the overall exposure of the cooling chamber 3 with the partial operation of opening the feed port, the vacuum system only needs to compensate for a small amount of gas leakage, which reduces energy consumption and shortens the production cycle.

[0076] Based on the above embodiments, the conveying mechanism 32 extends in a straight line or is distributed in a ring. If the conveying mechanism 32 is a conveyor belt, it is preferably extended in a straight line and can move back and forth between the second valve 5 and the material inlet of the cooling chamber 3; if the conveying mechanism 32 is a turntable, it is preferably distributed in a circular or oblong shape.

[0077] In some embodiments, the feeding chamber 1, furnace body 2, and cooling chamber 3 may be constructed as follows: Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The feeding chamber 1, furnace body 2, and cooling chamber 3 are arranged sequentially from top to bottom; or the feeding chamber 1, furnace body 2, and cooling chamber 3 are arranged sequentially in the horizontal direction.

[0078] In one embodiment, the feed chamber 1 is located above the furnace body 2, the furnace body 2 is located above the cooling chamber 3, and the crucible 6 is located directly below the feed inlet 7 and directly above the discharge outlet 8.

[0079] The above layout is adaptable to the charging and pouring steps of crucible 6. Specifically, crucible 6 is rotatably set inside furnace body 2. When feeding, the opening of crucible 6 faces upward and is aligned with the upper feed port 7, so that the raw material falls into the lower crucible 6. When pouring, crucible 6 is flipped so that the opening is tilted downward and aligned with the lower discharge port 8, so that it is easy to pour into cooling cylinder 31.

[0080] In this embodiment, the feeding chamber 1, furnace body 2, and cooling chamber 3 are arranged sequentially from top to bottom. By flipping the crucible 6, a continuous process of charging-melting-pouring can be achieved, eliminating the need for a complex material conveying system. This makes the vacuum induction melting furnace highly compact while ensuring that the raw material transmission process is free from pollution and splashing.

[0081] It should be noted that the crucible 6 is equipped with a flipping mechanism, which is used to flip it. Furthermore, the ability of the crucible 6 to rotate within the furnace body 2 is prior art; that is, the flipping mechanism is prior art and will not be elaborated upon here.

[0082] In another embodiment, when the alloy melting furnace is arranged horizontally, the feeding chamber 1 and the cooling chamber 3 are located on both sides of the furnace body 2.

[0083] In some embodiments, the aforementioned inlet 7 and outlet 8 can be adopted as follows: Figure 2 The structure shown is described in the following document. Figure 2 The feed inlet 7 includes a first through hole 71 provided on the bottom surface of the feed chamber 1 and a first mounting hole 72 provided on the top surface of the furnace body 2. The first through hole 71 and the first mounting hole 72 are vertically corresponding. The first valve 4 is rotatably provided at the first mounting hole 72.

[0084] The discharge port 8 includes a second mounting hole 82 located on the bottom surface of the furnace body 2 and a second through hole 81 located on the top surface of the cooling chamber 3. The second mounting hole 82 and the second through hole 81 are vertically corresponding. The second valve 5 is rotatably located at the second mounting hole 82.

[0085] The first mounting hole 72 can be regarded as the inlet of the furnace body 2, and the second mounting hole 82 can be regarded as the outlet of the furnace body 2. The first valve 4 is rotatably set at the first mounting hole 72, and the second valve 5 is rotatably set at the second mounting hole 82. That is to say, the first valve 4 and the second valve 5 are both set on the furnace body 2, which can ensure that the furnace body 2 is tightly sealed. When the first valve 4 and / or the second valve 5 are closed, it can ensure that the vacuum degree of the furnace body 2 meets the preset value.

[0086] In some embodiments, the feed inlet of the feed chamber 1 is provided with a feed valve 11, and the discharge outlet of the cooling chamber 3 is provided with a discharge valve 33, such as... Figure 1 As shown, the feed valve 11 and the discharge valve 33 are electrically connected to the electrical control system. In addition, the first valve 4 and the second valve 5 are also electrically connected to the electrical control system. In other words, all valves in this vacuum induction melting furnace are electrically controlled valves.

[0087] It should be noted that the specific installation method and the specific electric control opening and closing method of the electrically controlled valves are existing technologies and will not be described in detail here. This embodiment does not limit the specific structure and specific installation method of each electrically controlled valve. It is sufficient to install the feed valve 11 at the feed inlet, the feed valve 33 at the feed outlet, the first valve 4 at the first mounting hole 72, and the second valve 5 at the second mounting hole 82.

[0088] In addition, the feeding chamber 1 is equipped with an automatic feeding mechanism, which feeds materials into the feeding chamber 1 at a preset frequency. The automatic feeding mechanism is also electrically connected to the electrical control system.

[0089] The automatic feeding mechanism can be a robotic arm located outside the feeding chamber 1. The robotic arm automatically picks up the raw materials and places them into the feeding chamber 1. After feeding is completed, the feeding valve 11 is closed, and the vacuum device evacuates the feeding chamber 1. The vacuuming ends when the vacuum level is equal to the vacuum level inside the furnace body 2.

[0090] Preferably, the feeding chamber 1 can only hold one piece of raw material, which reduces the volume of the feeding chamber 1 accordingly. Furthermore, the process of pouring the raw material into the crucible 6 under vacuum does not require moving the raw material, thus eliminating the need for other moving mechanisms within the feeding chamber 1. After pouring is complete and the first valve 4 is closed, the feeding valve 11 reopens, and the automatic feeding mechanism resumes feeding.

[0091] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum induction melting furnace, characterized in that, It includes a feeding chamber (1), a furnace body (2), and a cooling chamber (3) connected in sequence; The feeding chamber (1) is provided with a feeding port, and the feeding chamber (1) and the furnace body (2) are provided with a feeding inlet (7), and the furnace body (2) and the cooling chamber (3) are provided with a discharging outlet (8); the cooling chamber (3) is provided with a material removal outlet; A first valve (4) is rotatably provided at the feed inlet (7). The first valve (4) can open the feed inlet (7) and block the feed inlet (7) so that the feed chamber (1) is connected to / isolated from the inner cavity of the furnace body (2). A second valve (5) is rotatably installed at the discharge port (8). The second valve (5) can open the discharge port (8) and block the discharge port (8) so that the inner cavity of the furnace body (2) is connected to / isolated from the cooling chamber (3). When the first valve (4) is opened, the feeding chamber (1) feeds material to the furnace body (2), and the vacuum degree of the feeding chamber (1) is equal to the vacuum degree of the furnace body (2); when the second valve (5) is opened, the furnace body (2) feeds material to the cooling chamber (3), and the vacuum degree of the cooling chamber (3) is equal to the vacuum degree of the furnace body (2).

2. The vacuum induction melting furnace as described in claim 1, characterized in that, The cooling chamber (3) has a plurality of cooling cylinders (31) for containing liquid alloy.

3. The vacuum induction melting furnace as described in claim 2, characterized in that, The cooling chamber (3) is provided with a conveying mechanism (32), and multiple cooling cylinders (31) are arranged on the conveying mechanism (32). The conveying mechanism (32) is used to drive multiple cooling cylinders (31) to move. Each cooling cylinder (31) can move sequentially to the position corresponding to the second valve (5), and can also move sequentially to the position corresponding to the material inlet.

4. The vacuum induction melting furnace as described in claim 3, characterized in that, The conveying mechanism (32) extends in a straight line or is distributed in a ring.

5. The vacuum induction melting furnace as described in claim 1, characterized in that, The feeding chamber (1), the furnace body (2), and the cooling chamber (3) are arranged sequentially from top to bottom; or the feeding chamber (1), the furnace body (2), and the cooling chamber (3) are arranged sequentially along the horizontal direction.

6. The vacuum induction melting furnace as described in claim 5, characterized in that, The feeding chamber (1), the furnace body (2) and the cooling chamber (3) are arranged in sequence from top to bottom; a crucible (6) is rotatably arranged inside the furnace body (2), and the crucible (6) is located directly below the feeding port (7) and directly above the discharging port (8).

7. The vacuum induction melting furnace as described in claim 6, characterized in that, The feed inlet (7) includes a first through hole (71) provided on the bottom surface of the feed chamber (1) and a first mounting hole (72) provided on the top surface of the furnace body (2). The first through hole (71) and the first mounting hole (72) are vertically corresponding. The first valve (4) is rotatably provided at the first mounting hole (72). The discharge port (8) includes a second mounting hole (82) provided on the bottom surface of the furnace body (2) and a second through hole (81) provided on the top surface of the cooling chamber (3). The second mounting hole (82) and the second through hole (81) are vertically corresponding. The second valve (5) is rotatably provided at the second mounting hole (82).

8. The vacuum induction melting furnace as described in claim 1, characterized in that, The feed inlet is equipped with a feed valve (11), and the take-out inlet is equipped with a take-out valve (33).

9. The vacuum induction melting furnace as described in claim 1, characterized in that, The feeding chamber (1) is equipped with an automatic feeding mechanism, which feeds the material into the feeding chamber (1) at a preset frequency.

10. The vacuum induction melting furnace as described in claim 1, characterized in that, The vacuum induction melting furnace also includes an electrical control module and a vacuum pumping device. The vacuum pumping device is connected to the feeding chamber (1), the furnace body (2), and the cooling chamber (3) respectively. The electrical control module is electrically connected to the first valve (4), the second valve (5), and the vacuum pumping device.

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