An electromagnetic induction heatable holding furnace

Abstract

This utility model relates to an electromagnetic filling and holding furnace, including a mobile lifting trolley with cavity A and cavity B mounted on it. Cavity A is equipped with a furnace door and a drain outlet, while cavity B is connected to a mold cavity via a riser pipe. Cavities A and B are seamlessly connected via an electromagnetic transfer pump. This utility model achieves a seamless connection between cavities A and B using an electromagnetic transfer pump, smoothly transferring molten metal from cavity A to cavity B through the electromagnetic force of the pump. This eliminates the dependence of molten metal flow on compressed air pressure, resulting in an extremely stable filling process. It effectively avoids turbulence and air entrapment, ensuring high-quality molten metal and reducing the gas and slag content in the molten metal.

Description

Technical Field

[0001] This utility model relates to a heat-preserving furnace, specifically an electromagnetic filling heat-preserving furnace, belonging to the technical field of casting equipment. Background Technology

[0002] As a core piece of equipment for storing and supplying molten metal, the holding furnace plays a crucial role in the casting industry. Traditional low-pressure holding furnaces rely on compressed air for filling and maintaining pressure, forcing molten metal from the furnace into the mold and maintaining a certain pressure until the metal solidifies. However, using compressed air for filling results in significant pressure fluctuations, making it difficult to precisely control key parameters of the die-casting process. Compressed air filling also suffers from long delays, slow reaction speeds, and difficulty in precision control. During the filling stage, turbulence and air entrapment are prone to occur, all of which can negatively impact product quality. Furthermore, the continuous input and output of compressed air affects the holding furnace's insulation effect, leading to significant temperature fluctuations in the molten metal. For castings with complex shapes, varying wall thicknesses, or high quality requirements, relying solely on compressed air filling often fails to ensure the forming quality and dimensional accuracy of the castings.

[0003] Therefore, this utility model is proposed. Utility Model Content

[0004] To address the aforementioned technical problems in the prior art, the purpose of this utility model is to provide an electromagnetic filling and holding furnace. This furnace utilizes an electromagnetic transfer pump to achieve a seamless connection between cavity A and cavity B, smoothly transferring liquid metal from cavity A to cavity B via the electromagnetic force of the pump. This eliminates the dependence of the liquid metal flow on compressed air pressure, resulting in an extremely stable filling process. This effectively avoids problems such as turbulence and air entrapment, thereby ensuring high-quality molten metal and reducing the gas and slag content in the molten metal.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An electromagnetic filling and heat preservation furnace includes a mobile lifting trolley, on which cavity A and cavity B are installed. Cavity A is provided with a furnace door and a drain outlet. Cavity B is connected to the mold cavity through a riser pipe. Furthermore, cavity A and cavity B are seamlessly connected by an electromagnetic delivery pump.

[0006] Both cavity A and cavity B are equipped with heating tubes.

[0007] The cavity A is equipped with a laser liquid level detector.

[0008] The cavity B is equipped with a liquid level probe.

[0009] The cavity B is equipped with a shut-off valve.

[0010] The outer walls of both cavity A and cavity B are made of heat-resistant steel plates, and the heat-resistant steel plates are provided with an insulation layer.

[0011] Both cavity A and cavity B are equipped with thermocouples.

[0012] Cavity B is equipped with compressed air inlet and outlet.

[0013] The beneficial effects of this utility model are as follows: This invention relates to an electromagnetic filling and holding furnace, which cleverly divides itself into two independent cavities, A and B, seamlessly connected by an electromagnetic transfer pump. Cavity A is dedicated to the heat preservation and storage of liquid metal and is equipped with a furnace door for easy addition of liquid metal. Cavity B is tightly connected to the mold cavity and uses compressed air to maintain the pressure of the liquid metal. This invention smoothly transfers the liquid metal from cavity A to cavity B via the electromagnetic force of the electromagnetic transfer pump, making the flow of liquid metal independent of compressed air pressure. The filling process is extremely stable, effectively avoiding turbulence and air entrapment, thus ensuring high-quality molten metal and reducing the gas and slag content in the molten metal. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the present invention; Among them, 1 is the mobile lifting trolley, 2 is cavity A, 3 is cavity B, 4 is the furnace door, 5 is the drain port, 6 is the riser pipe, 7 is the electromagnetic transfer pump, 8 is the heating pipe, 9 is the laser liquid level detector, 10 is the shut-off valve, 11 is the heat-resistant steel plate outer wall, 12 is the insulation layer, 13 is the thermocouple, 14 is the compressed air inlet and outlet, and 15 is the liquid level probe. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0016] like Figure 1-3 As shown, the electromagnetic filling heat preservation furnace of this utility model includes a mobile lifting trolley 1 for moving and lifting the heat preservation furnace. Cavities A2 and B3 are installed on the mobile lifting trolley 1, and cavities A2 and B3 are seamlessly connected by an electromagnetic transfer pump 7. Cavity A2 is specifically used for heat preservation and storage of liquid metal and is equipped with a furnace door 4 and other facilities to facilitate the addition of liquid metal. It also has a drain port 5, through which unused liquid metal can be discharged during furnace shutdown or maintenance.

[0017] In this invention, cavity B3 is tightly connected to the mold cavity via a riser pipe 6, allowing the molten metal in cavity B to enter the mold through the riser pipe 6. Cavity B3 is also equipped with a compressed air inlet / outlet 14, which introduces compressed air to maintain the pressure of the molten metal. In cavity A2, the molten metal is smoothly transferred to cavity B3 by the electromagnetic force of the electromagnetic transfer pump 7. Therefore, the electromagnetic transfer pump 7 functions as a filling and liquid-lifting pump, stabilizing the rise of the liquid level. During this process, the flow of the molten metal no longer depends on the pressure of the compressed air, but is directly driven by the electromagnetic force applied to the molten metal by the electromagnetic transfer pump 7. Furthermore, the electromagnetic force is controlled by directly adjusting the current, thereby precisely controlling the filling speed with fast response and minimal delay. Once the mold cavity is filled with molten metal, the electromagnetic transfer pump 7 immediately stops working, and then compressed air is introduced into cavity B3 to maintain pressure. The increased air pressure ensures the density of the product. A shut-off valve 10 is installed at the bottom of cavity B3. During pressure holding, the electromagnetic delivery pump 7 stops driving, and compressed air is introduced into cavity B3 to hold the pressure until the molten metal in the mold is completely formed.

[0018] Furthermore, both cavity A2 and cavity B3 in this invention are equipped with heating tubes 8 and thermocouples 13. The heating tubes 8 are used to heat the liquid metal, and the thermocouples 13 are used to detect the temperature of the liquid metal. Cavity A2 is equipped with a laser liquid level detector 9 to detect the liquid level height; cavity B3 is equipped with a liquid level probe 15 to control the liquid level height of the molten metal. The outer walls of cavities A and B3 are both heat-resistant steel plate outer walls 11, and the heat-resistant steel plate outer walls 11 are provided with a fire-resistant insulation layer 12 to insulate the aluminum liquid in cavities A2 and B3.

[0019] This invention eliminates the need to introduce air into cavity A2 during the filling stage, reducing heat loss from the high-temperature molten metal. Furthermore, the two cavities are independently insulated, further minimizing heat loss. The filling process is extremely smooth, effectively preventing turbulence and air entrapment, thus ensuring high-quality molten metal and reducing the gas and slag content in the molten metal.

[0020] The above embodiments are only used to explain the inventive concept of this utility model, and are not intended to limit the protection of this utility model. Any non-substantial modifications made to this utility model using this concept should fall within the protection scope of this utility model.

Claims

1. An electromagnetically charged heat-preserving furnace, characterized in that: The device includes a mobile lifting trolley, on which cavity A and cavity B are installed. Cavity A is equipped with a furnace door and a drain outlet. Cavity B is connected to the mold cavity through a riser pipe. Furthermore, cavity A and cavity B are seamlessly connected by an electromagnetic conveying pump.

2. The electromagnetic induction heated holding furnace of claim 1, wherein: Both cavity A and cavity B are equipped with heating tubes.

3. The electromagnetic induction heated holding furnace of claim 1 wherein: The cavity A is equipped with a laser liquid level detector.

4. The electromagnetic induction heated holding furnace of claim 1 wherein: The cavity B is equipped with a liquid level probe.

5. The electromagnetic induction heated holding furnace of claim 1 wherein: The cavity B is equipped with a shut-off valve.

6. The electromagnetic induction heated holding furnace of claim 1 wherein: The outer walls of both cavity A and cavity B are made of heat-resistant steel plates, and the heat-resistant steel plates are provided with an insulation layer.

7. The electromagnetic induction heated holding furnace of claim 1 wherein: Both cavity A and cavity B are equipped with thermocouples.

8. The electromagnetic induction heated holding furnace of claim 1 wherein: Cavity B is equipped with compressed air inlet and outlet.

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