Auxiliary device for preparing low-porosity alloy

Abstract

The low-porosity alloy preparation auxiliary device comprises an alloy smelting furnace, a U-shaped frame is fixedly installed at one end of the alloy smelting furnace in an extending mode, a sealing plate is installed in the U-shaped frame in a sealed and sliding mode, a traction groove is formed in one end of the sealing plate in an embedded mode, and a vacuum mechanism is fixedly installed in the traction groove. Through the design of the vacuum mechanism, the vacuum environment of the furnace cavity can be automatically maintained in the alloy smelting furnace process, in the vacuum environment, the solubility of gas in alloy raw materials is reduced, part of the gas can escape before smelting, and then the possibility that gas holes are generated in the alloy liquid smelting and solidification process due to the existence of the gas is reduced.

Description

Technical Field

[0001] This utility model relates to the field of alloy preparation technology, specifically to an auxiliary device for preparing low-porosity alloys. Background Technology

[0002] As modern industry places increasingly higher demands on the performance of alloy materials, low porosity has become a key indicator for evaluating alloy quality. The presence of porosity not only weakens the mechanical properties of alloys but may also lead to potential problems such as fatigue cracks, seriously affecting their application in high-end fields such as aerospace and automotive manufacturing.

[0003] During the smelting process, gases (such as hydrogen and oxygen) dissolve in the molten metal or react with air, easily forming pores during solidification, leading to a decrease in the material's mechanical properties. For example, for every 8.5% increase in porosity, the compressive strength may decrease by 30%.

[0004] Traditional vacuum equipment relies on manual adjustment, making it difficult to accurately maintain the vacuum level (such as excessive pumping leading to increased energy consumption, or insufficient vacuum affecting the effect). Temperature fluctuations and insufficient sealing during the melting process may cause secondary gas infiltration, reducing the effect of porosity control.

[0005] To address this, an auxiliary device for preparing low-porosity alloys is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary device for the preparation of low-porosity alloys, in order to solve the problem mentioned in the background art that the porosity control technology in the traditional alloy preparation process has limitations and is difficult to meet increasingly stringent production requirements.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An auxiliary device for preparing low porosity alloys includes: an alloy melting furnace, a U-shaped frame fixedly installed at one end of the alloy melting furnace in an extended shape, a sealing plate slidably installed inside the U-shaped frame, a traction groove embedded at one end of the sealing plate, and a vacuum mechanism fixedly installed inside the traction groove.

[0009] Preferably, the vacuum mechanism includes a vacuum pump, one end of which is connected to a gas pipe, which extends from the other end of the alloy melting furnace into the furnace cavity.

[0010] Preferably, an electric push rod is fixedly installed at one end of the alloy melting furnace, and the piston rod of the electric push rod is fixedly connected in the pull groove of the sealing plate, so that when the electric push rod pulls down the sealing plate, the sealing plate can drive the pull groove to slide around the periphery of the electric push rod.

[0011] Preferably, a pressure gauge is fixedly installed at one end of the sealing plate, and the air inlet of the pressure gauge passes through the sealing plate and can be connected to the furnace cavity.

[0012] Preferably, a heat insulation cylinder is fixedly installed inside the furnace cavity, and a laser sensor is fixedly installed inside the heat insulation cylinder, so that when the sealing plate slides to seal the furnace cavity, it will cover one end of the laser sensor. The signal transmitting end of the laser sensor and the pressure gauge is connected to the signal receiving end of the controller, and the control output end of the controller is electrically connected to the electrical control end of the vacuum pump.

[0013] Preferably, the laser sensor and controller are model OSM40 and S7-1200, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the design of the alloy melting furnace, sealing plate, and vacuum mechanism, during use, the alloy material is placed in the furnace cavity. Then, the vacuum mechanism is activated to pull down the sealing plate to slide and seal the furnace cavity. The vacuum mechanism automatically detects the sliding seal and performs powerful evacuation. As the gas is continuously discharged, the pressure inside the furnace cavity drops rapidly, creating a high vacuum environment. Once the pressure inside the furnace cavity drops to a set value, the evacuation automatically stops and maintains the pressure within the set range. Based on the principle of gas solubility, the solubility of gases in the alloy material is significantly reduced under vacuum. Gases originally dissolved in the alloy material, such as hydrogen and oxygen, will continuously escape, reducing the risk of porosity caused by residual gas during subsequent melting and solidification. It also prevents the alloy from reacting with oxygen, nitrogen, and other gases in the air during melting, thus reducing porosity. Furthermore, it helps remove gases and impurities from the alloy liquid, improving the quality of the alloy.

[0016] 2. The design incorporates a vacuum pump, electric push rod, pressure gauge, and laser sensor. During operation, the alloy raw material is placed into the furnace chamber of the alloy melting furnace. The electric push rod then pushes the sealing plate upwards, allowing it to slide along the inner wall of the U-shaped frame until it completely covers the furnace opening, sealing the furnace chamber. During this process, the pressure gauge, connected to one end of the sealing plate, is also connected to the furnace chamber and monitors the pressure in real time. After sealing, the sealing plate covers one end of the laser sensor, which then sends a signal to the controller. The controller then activates the vacuum pump to evacuate the furnace chamber through the gas pipe, reducing the pressure and creating a preset vacuum environment. In this vacuum environment, the solubility of gases in the alloy raw material decreases, allowing some gases to escape. Before melting, the gas escapes, thus reducing the possibility of porosity caused by the presence of gas in the molten alloy during melting and solidification. During melting, the pressure gauge feeds back the gas pressure data in the furnace cavity to the controller in real time. The controller compares this data with the preset gas pressure threshold. If the detected gas pressure value is higher than the set upper limit, the controller will immediately send a command to the electronic control terminal of the vacuum pump to increase the power of the vacuum pump or extend the pumping time to accelerate the extraction of gas in the furnace cavity and ensure that the gas pressure in the furnace cavity drops rapidly to the set range. Conversely, if the gas pressure value is lower than the set lower limit, the controller will reduce the operating power of the vacuum pump or stop pumping to prevent excessive pumping from wasting energy and potentially damaging the equipment. This maintains the gas pressure in the furnace cavity within the ideal value range, ensuring that the alloy melting is always in the optimal vacuum environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the auxiliary device for preparing low-porosity alloys according to this utility model.

[0018] Figure 2 This is a schematic diagram of the vacuum pump and gas pipe of this utility model;

[0019] Figure 3 This is a schematic diagram of the vacuum mechanism of this utility model.

[0020] In the diagram: 1. Alloy melting furnace; 101. Sealing plate; 102. Pulling groove; 103. U-shaped frame; 104. Furnace cavity; 2. Vacuum mechanism; 201. Vacuum pump; 202. Gas pipe; 203. Electric push rod; 204. Pressure gauge; 205. Heat insulation cylinder; 206. Laser sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 This embodiment provides the following technical solution:

[0023] like Figure 1 As shown, an auxiliary device for preparing low porosity alloys includes: an alloy melting furnace 1, an alloy melting furnace 1 with a U-shaped frame 103 fixedly installed at one end in an extended shape, a sealing plate 101 slidably installed inside the U-shaped frame 103, a pulling groove 102 embedded at one end of the sealing plate 101, and a vacuum mechanism 2 fixedly installed inside the pulling groove 102.

[0024] Through the design of the alloy melting furnace 1, the sealing plate 101, and the vacuum mechanism 2, during use, the alloy material is placed inside the furnace cavity 104 of the alloy melting furnace 1. Then, the vacuum mechanism 2 is activated to pull down the sealing plate 101 to slide and seal the furnace cavity 104. Once the sealing plate 101 has slid and sealed the furnace cavity 104, the vacuum mechanism 2 automatically detects this and forcefully evacuates the furnace cavity 104. As gas is continuously discharged, the pressure inside the furnace cavity 104 drops rapidly, creating a high vacuum environment. Once the pressure inside the furnace cavity 104 drops to a set value... It can automatically stop pumping air and maintain the air pressure within the set range. Based on the principle of gas solubility, the solubility of gases in alloy materials is greatly reduced under vacuum. Gases that were originally dissolved in the alloy materials, such as hydrogen and oxygen, will continuously escape, reducing the risk of porosity caused by gas residue in the molten alloy during subsequent melting and solidification. It can also prevent the alloy from reacting with gases such as oxygen and nitrogen in the air during melting, thereby reducing the formation of porosity. It also helps to remove gases and impurities from the molten alloy and improve the quality of the alloy.

[0025] like Figures 2-3 As shown, the vacuum mechanism 2 includes a vacuum pump 201. One end of the air port of the vacuum pump 201 is connected to an air pipe 202. The air pipe 202 extends from the other end of the alloy melting furnace 1 and passes through the furnace cavity 104 of the alloy melting furnace 1. An electric push rod 203 is fixedly installed at one end of the alloy melting furnace 1. The piston rod of the electric push rod 203 is fixedly connected to the pull groove 102 of the sealing plate 101. This allows the sealing plate 101 to slide the pull groove 102 around the electric push rod 203 when the electric push rod 203 pulls down the sealing plate 101.

[0026] A pressure gauge 204 is fixedly installed at one end of the sealing plate 101. The air inlet of the pressure gauge 204 passes through the sealing plate 101 and can be connected to the furnace cavity 104. A heat insulation cylinder 205 is fixedly installed inside the furnace cavity 104. A laser sensor 206 is fixedly installed inside the heat insulation cylinder 205. When the sealing plate 101 slides to seal the furnace cavity 104, it will cover one end of the laser sensor 206. The signal transmitting ends of the laser sensor 206 and the pressure gauge 204 are connected to the signal receiving end of the controller. The control output end of the controller is electrically connected to the electrical control end of the vacuum pump 201. The models of the laser sensor 206 and the controller are OSM40 and S7-1200, respectively.

[0027] Through the design of the vacuum pump 201, electric push rod 203, pressure gauge 204, and laser sensor 206, during use, the alloy raw material can be placed into the furnace chamber 104 of the alloy melting furnace 1. Then, the electric push rod 203 can be activated to push the sealing plate 101 upward, allowing the sealing plate 101 to slide upward along the inner wall of the U-shaped frame 103 until it completely covers the opening of the alloy melting furnace 1, thus sealing the furnace chamber 104. During this process, the pressure gauge 204, which is connected to one end of the sealing plate 101, is also connected to the furnace chamber 104 and monitors the air pressure value inside the furnace chamber 104 in real time. After sealing, the sealing plate 101 will cover one end of the laser sensor 206, and the covered laser sensor 206 can send a signal to the controller, so that the controller controls the vacuum pump 201 to evacuate air from the furnace chamber 104 through the air pipe 202, reducing the air pressure inside the furnace chamber 104 to form a preset pressure vacuum environment. In the vacuum environment... The reduced gas solubility in the alloy raw materials allows some gases to escape before melting, thus reducing the possibility of porosity caused by gas during melting and solidification of the alloy liquid. Furthermore, during melting, the pressure gauge 204 feeds back the gas pressure data in the furnace chamber 104 to the controller in real time. The controller compares this data with a preset pressure threshold. If the detected pressure value is higher than the upper limit, the controller immediately sends a command to the electronic control terminal of the vacuum pump 201 to increase the power of the vacuum pump 201 or extend the pumping time, accelerating the extraction of gas from the furnace chamber 104 and ensuring that the gas pressure in the furnace chamber 104 drops rapidly to the set range. Conversely, if the pressure value is lower than the lower limit, the controller reduces the operating power of the vacuum pump 201 or stops pumping to prevent excessive pumping from wasting energy and potentially damaging the equipment. This maintains the gas pressure in the furnace chamber 104 within the ideal range, ensuring that the alloy melting is always in the optimal vacuum environment.

[0028] Based on the above technical solution, the working steps of this solution are summarized as follows: In use, the alloy raw material can be placed into the furnace cavity 104 of the alloy melting furnace 1. Then, the electric push rod 203 can be activated to push the sealing plate 101 upwards, allowing the sealing plate 101 to slide upwards along the inner wall of the U-shaped frame 103 until it completely covers the opening of the alloy melting furnace 1, thus sealing the furnace cavity 104. During this process, the pressure gauge 204 installed at one end of the sealing plate 101 is also connected to the furnace cavity 104 and monitors the pressure value inside the furnace cavity 104 in real time. After sealing... The sealed plate 101, once formed, will cover one end of the laser sensor 206. The covered laser sensor 206 can then send a signal to the controller, instructing the controller to control the vacuum pump 201 to evacuate the furnace chamber 104 through the gas pipe 202. This reduces the gas pressure inside the furnace chamber 104, creating a preset vacuum environment. In this vacuum environment, the solubility of gases in the alloy raw materials decreases, allowing some gases to escape before melting. This reduces the possibility of porosity in the molten alloy due to gas presence during melting and solidification. Furthermore, during the melting process… The pressure gauge 204 feeds back the pressure data inside the furnace cavity 104 to the controller in real time. The controller compares this data with a preset pressure threshold. If the detected pressure value is higher than the set upper limit, the controller immediately sends a command to the electronic control terminal of the vacuum pump 201 to increase the power of the vacuum pump 201 or extend the pumping time, accelerating the extraction of gas from the furnace cavity 104 and ensuring that the pressure inside the furnace cavity 104 drops rapidly to the set range. Conversely, if the pressure value is lower than the set lower limit, the controller will reduce the operating power of the vacuum pump 201 or stop pumping to prevent over-extraction. Excessive vacuuming can lead to energy waste and potential damage to equipment. Therefore, the gas pressure inside the furnace chamber 104 is kept stable within the ideal range to ensure that the alloy melting is always in the best vacuum environment. After the alloy melting is completed, the electric push rod 203 can be activated to pull down the sealing plate 101 and slide it down along the inner wall of the U-shaped frame 103 to open the furnace chamber 104. During the process of opening the furnace chamber 104, the cover on the laser sensor 206 can be removed, which allows the controller to automatically control the vacuum pump 201 to stop working, so that the staff can take the alloy out of the furnace chamber 104.

[0029] In summary, this device can automatically maintain a vacuum environment in the furnace chamber 104 during the alloy melting process. In a vacuum environment, the solubility of gases in the alloy raw materials is reduced, and some gases can escape before melting, thereby reducing the possibility of porosity caused by the presence of gases in the alloy liquid during melting and solidification.

[0030] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for preparing low-porosity alloys, characterized in that, include: An alloy melting furnace (1) is provided with a U-shaped frame (103) fixedly installed at one end of the alloy melting furnace (1) in an extended shape. A sealing plate (101) is slidably installed inside the U-shaped frame (103). A traction groove (102) is embedded at one end of the sealing plate (101). A vacuum mechanism (2) is fixedly installed inside the traction groove (102).

2. The auxiliary device for preparing low-porosity alloys according to claim 1, characterized in that: The vacuum mechanism (2) includes a vacuum pump (201), one end of which is connected to a gas pipe (202), which is connected to the other end of the alloy melting furnace (1) and extends into the furnace cavity (104) of the alloy melting furnace (1).

3. The auxiliary device for preparing low-porosity alloys according to claim 1 or 2, characterized in that: An electric push rod (203) is fixedly installed at one end of the alloy melting furnace (1). The piston rod of the electric push rod (203) is fixedly connected in the pull groove (102) of the sealing plate (101). This allows the sealing plate (101) to slide around the electric push rod (203) when it pulls down the sealing plate (101).

4. The auxiliary device for preparing low-porosity alloys according to claim 3, characterized in that: A pressure gauge (204) is fixedly installed at one end of the sealing plate (101), and the air inlet of the pressure gauge (204) passes through the sealing plate (101) and can be connected to the furnace cavity (104).

5. The auxiliary device for preparing low-porosity alloys according to claim 3 or 4, characterized in that: A heat insulation cylinder (205) is fixedly installed inside the furnace cavity (104), and a laser sensor (206) is fixedly installed inside the heat insulation cylinder (205). This allows the sealing plate (101) to cover one end of the laser sensor (206) when it slides to seal the furnace cavity (104). The signal transmitting ends of the laser sensor (206) and the pressure gauge (204) are connected to the signal receiving end of the controller. The control output end of the controller is electrically connected to the electrical control end of the vacuum pump (201).

6. The auxiliary device for preparing low-porosity alloys according to claim 4, characterized in that: The laser sensor (206) and controller are model OSM40 and S7-1200, respectively.

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