Non-consumable electric arc suspension bipolar smelting equipment
By introducing electromagnetic induction technology into non-consumable arc smelting equipment, the problem of the lower alloy not easy to melt is solved, efficient and uniform alloy preparation is achieved, and the melting capacity efficiency is improved.
Patent Information
- Application Number
- CN202422180127.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the existing non-consumable arc smelting technology, the lower alloy is not easy to melt, resulting in low capacity efficiency and uneven alloy composition.
A non-consumable arc suspension bipolar melting equipment is designed, combining the arc melting system and the melt suspension system. By applying an electromagnetic field above the water-cooled crucible, an induced current and electromagnetic force are formed to achieve suspension and uniform heating of the metal melt.
The preparation efficiency of the refractory alloy is improved, the uniformity and impurity-free of alloy components are achieved, and the melting capacity efficiency is improved.
Smart Images
Figure CN223036860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of alloy smelting, in particular to a non-consumable arc suspension bipolar smelting device. Background Art
[0002] The non-consumable arc smelting of the prior art utilizes the principle of arc discharge. The gas between the electrodes discharges to form an arc. The energy of the arc is concentrated and the temperature in the arc zone is above 3000°C, which can realize the smelting of metals with higher melting points. For non-consumable arc suspension smelting, the crucible itself, as the anode, must use materials with good electrical conductivity. Considering comprehensively the problems such as the electrical conductivity of the crucible and the contamination between the crucible and the molten material, copper is usually used as the common material for the crucible. In order to avoid the melting of the crucible, circulating water is arranged inside the crucible to achieve the effect of crucible cooling. However, the cooling water not only takes away the heat on the crucible, but also takes away the heat of the charge in contact with the crucible, resulting in the difficulty of melting the lower-layer alloy, and thus forming problems such as low capacity efficiency and uneven alloy composition in non-consumable arc smelting. Content of the Utility Model
[0003] The purpose of the utility model is to provide a non-consumable arc suspension bipolar smelting device, which solves the problems of low capacity efficiency and uneven alloy composition caused by the difficulty of melting the lower-layer alloy in non-consumable arc smelting in the prior art.
[0004] The technical solution of the utility model is as follows:
[0005] A non-consumable arc suspension bipolar smelting device is composed of an arc smelting system, a melt suspension system, a furnace body, a circulating water system and a vacuum system. The water-cooled crucible of the arc smelting system is arranged in the furnace body. The water-cooled crucible corresponds to a liftable arc gun above it. The electromagnetic induction coil of the melt suspension system is installed outside the water-cooled crucible. The circulating water system is connected to the circulating water channel of the arc gun through a return water arc gun cooling water pipe and a feed water arc gun cooling water pipe. The circulating water system is connected to the circulating water channel of the water-cooled crucible through a water-cooled crucible circulating water path. The vacuum system is connected to the furnace body.
[0006] The described non-consumable arc suspension bipolar melting equipment, the arc melting system includes a lifting motor, an arc gun, a tungsten electrode, a water-cooled crucible, an anode cable, an arc melting power supply, and a cathode cable. The lifting motor is arranged above the furnace body. A first pulley is installed at the output end of the lifting motor. A second pulley is installed outside the vertical arc gun. The second pulley is connected to the arc gun through a screw drive. The two pulleys are arranged opposite to each other and connected by a belt. The lifting motor drives the first pulley and the second pulley in sequence to control the lifting of the arc gun. The upper end of the arc gun is connected to the cathode cable, the lower end of the arc gun is connected to the tungsten electrode, and the arc gun and the tungsten electrode are combined as the arc melting cathode. The lower part of the tungsten electrode corresponds to the water-cooled crucible. The water-cooled crucible is installed inside the furnace body. The lower part of the water-cooled crucible is connected to the anode cable. The cathode cable and the anode cable are respectively connected to the arc melting power supply to form a power supply circuit.
[0007] The described non-consumable arc suspension bipolar melting equipment, the melt suspension system includes a suspension melting loop cable, a suspension melting power supply, a flipping electrode, and an electromagnetic induction coil. The water-cooled crucible is placed above or inside the electromagnetic induction coil. One end of the flipping electrode is connected to the electromagnetic induction coil, and the other end of the flipping electrode is connected to the suspension melting power supply through the suspension melting loop cable. The electromagnetic induction coil, the flipping electrode, the suspension melting loop cable, and the suspension melting power supply are connected in sequence to form a loop.
[0008] The described non-consumable arc suspension bipolar melting equipment, the circulating water system includes a water-cooled crucible circulating water path, a water chiller, a return water arc gun cooling water pipe, and a feed water arc gun cooling water pipe. The water chiller is connected to the outlet of the circulating water channel on the arc gun through the return water arc gun cooling water pipe, and the water chiller is connected to the inlet of the circulating water channel on the arc gun through the feed water arc gun cooling water pipe. The arc gun is cooled by circulating water. The water chiller is connected to the inlet and outlet of the circulating water channel on the water-cooled crucible respectively through the water-cooled crucible circulating water path. The water-cooled crucible is cooled by circulating water.
[0009] The described non-consumable arc suspension bipolar melting equipment, the vacuum system includes a vacuum valve and a vacuum pump group. The vacuum pump group is connected to the inner cavity of the furnace body through a pipeline, and a vacuum valve is provided on the pipeline.
[0010] The advantages and beneficial effects of the present utility model are:
[0011] The arc melting system and the suspension melting system of the present utility model are used in combination, combined with an intelligent control program and a temperature control system. An electromagnetic field is applied above and to the water-cooled crucible to form an induced current between the metal furnace charges, and an electromagnetic force is formed by the interaction between the electromagnetic field and the furnace charges, solving the problems of low energy of the melting system, poor melting ability and efficiency in the prior art, and realizing high preparation efficiency of kilogram-level refractory alloys, uniform alloy composition and no impurities. Description of the Drawings
[0012] Figure 1 This is the structural schematic diagram of the present utility model.
[0013] In the figure, 1 is the lifting motor, 2 is the arc gun, 3 is the tungsten electrode, 4 is the metal melt, 5 is the water-cooled crucible, 6 is the suspension melting circuit cable, 7 is the suspension melting power supply, 8 is the flipping electrode, 9 is the electromagnetic induction coil, 10 is the vacuum valve, 11 is the vacuum pump set, 12 is the water-cooled crucible circulating water path, 13 is the water cooler, 14 is the anode cable, 15 is the arc melting power supply, 16 is the cathode cable, 17 is the return water arc gun cooling water pipe, 18 is the incoming water arc gun cooling water pipe, 19 is the furnace body, 20 is the first pulley, 21 is the belt, 22 is the second pulley. Specific embodiments
[0014] As Figure 1 shown, the present utility model provides a non-consumable arc suspension bipolar melting device, which is composed of an arc melting system, a melt suspension system, a furnace body, a circulating water system and a vacuum system. The water-cooled crucible 5 of the arc melting system is arranged in the furnace body 19, and the arc gun 2 that can be lifted corresponds to the upper part of the water-cooled crucible 5. The electromagnetic induction coil 9 of the melt suspension system is installed outside the water-cooled crucible 5. The circulating water system is connected to the circulating water channel of the arc gun 2 through the return water arc gun cooling water pipe 17 and the incoming water arc gun cooling water pipe 18. The circulating water system is connected to the circulating water channel of the water-cooled crucible 5 through the water-cooled crucible circulating water path 12. The vacuum system is connected to the furnace body 19.
[0015] The device mainly includes a lifting motor 1, an arc gun 2, a tungsten electrode 3, a metal melt 4, a water-cooled crucible 5, a suspension melting circuit cable 6, a suspension melting power supply 7, a flipping electrode 8, an electromagnetic induction coil 9, a vacuum valve 10, a vacuum pump set 11, a water-cooled crucible circulating water path 12, a water cooler 13, an anode cable 14, an arc melting power supply 15, a cathode cable 16, a return water arc gun cooling water pipe 17, an incoming water arc gun cooling water pipe 18, and a furnace body 19. The specific structure is as follows:
[0016] The arc melting system includes a lifting motor 1, an arc gun 2, a tungsten electrode 3, a water-cooled crucible 5, an anode cable 14, an arc melting power supply 15, a cathode cable 16, etc. The lifting motor 1 is arranged above the furnace body 19. A first pulley 20 is installed at the output end of the lifting motor 1. A second pulley 22 is installed outside the vertical arc gun 2. The second pulley 22 is connected to the arc gun 2 through a screw drive. The two pulleys are arranged opposite to each other and connected by a belt 21. The lifting motor 1 drives the first pulley 20 and the second pulley 22 in sequence to control the lifting of the arc gun 2. The upper end of the arc gun 2 is connected to the cathode cable 16, and the lower end of the arc gun 2 is connected to the tungsten electrode 3. The arc gun 2 and the tungsten electrode 3 are combined into an arc melting cathode. The tungsten electrode 3 corresponds to the water-cooled crucible 5 below. The water-cooled crucible 5 is installed inside the furnace body 19. The lower part of the water-cooled crucible 5 is connected to the anode cable 14. The cathode cable 16 and the anode cable 14 are respectively connected to the arc melting power supply 15 to form a power supply circuit. Among them, the arc gun 2 is made of copper material, and the water-cooled crucible 5 is made of copper material.
[0017] The melt suspension system includes a suspension melting loop cable 6, a suspension melting power supply 7, a flipping electrode 8, an electromagnetic induction coil 9, etc. The water-cooled crucible 5 is placed above or inside the electromagnetic induction coil 9. One end of the flipping electrode 8 is connected to the electromagnetic induction coil 9, and the other end of the flipping electrode 8 is connected to the suspension melting power supply 7 through the suspension melting loop cable 6. The electromagnetic induction coil 9, the flipping electrode 8, the suspension melting loop cable 6, and the suspension melting power supply 7 are connected in sequence to form a loop.
[0018] The circulating water system includes a water-cooled crucible circulating water path 12, a water chiller 13, a return water arc gun cooling water pipe 17, a feed water arc gun cooling water pipe 18, etc. The water chiller 13 is connected to the outlet of the circulating water channel on the arc gun 2 through the return water arc gun cooling water pipe 17, and the water chiller 13 is connected to the inlet of the circulating water channel on the arc gun 2 through the feed water arc gun cooling water pipe 18. The arc gun 2 is cooled by circulating water. Similarly, the water chiller 13 is connected to the inlet and outlet of the circulating water channel on the water-cooled crucible 5 respectively through the water-cooled crucible circulating water path 12. The water-cooled crucible 5 is cooled by circulating water.
[0019] The vacuum system includes a vacuum valve 10, a vacuum pump group 11, etc. The vacuum pump group 11 is connected to the inner cavity of the furnace body 19 through a pipeline, and the vacuum valve 10 is provided on the pipeline.
[0020] As Figure 1 shown, the arc suspension melting method of the non-consumable arc suspension bipolar melting equipment of the present invention is as follows:
[0021] 1. Open the vacuum valve 10 and the vacuum pump group 11 to evacuate the furnace body 19 to achieve melting under vacuum, and fill the furnace body 19 with argon.
[0022] 2. Turn on the arc melting power supply 15. After the two electrodes (the tungsten electrode 3 as the cathode and the charge as the anode) come into contact and then separate immediately, due to the short-circuit heating, the temperature on the surface of the cathode increases sharply, generating thermionic emission. The thermionic emission causes the impact ionization and the secondary electron emission of the cathode to increase sharply, thus making the gas between the two electrodes have good electrical conductivity. The arc discharge of the tungsten electrode 3 heats the anode, i.e., the charge, to a very high temperature, so that the charge melts into the metal melt 4.
[0023] 3. Turn on the levitation melting power supply 7 to form an electromagnetic field in the electromagnetic induction coil 9. The electromagnetic field forms an induced current in the metal melt 4. The metal melt 4 with the induced current is lifted under the influence of the electromagnetic force in the electromagnetic field. The side of the metal melt 4 leaves the inner wall of the water-cooled crucible 5, and only the metal melt 4 at the bottom of the water-cooled crucible 5 has a contact surface with the water-cooled crucible 5.
Claims
1. A non-consumable arc suspension bipolar melting equipment, characterized in that: It consists of an arc melting system, a melt suspension system, a furnace body, a circulating water system and a vacuum system. The water-cooled crucible of the arc melting system is arranged in the furnace body, the top of the water-cooled crucible corresponds to the liftable arc gun, the electromagnetic induction coil of the melt suspension system is installed on the outside of the water-cooled crucible, the circulating water system is connected with the circulating water channel of the arc gun through the return arc gun cooling water pipe and the inlet arc gun cooling water pipe, the circulating water system is connected with the circulating water channel of the water-cooled crucible through the circulating water channel of the water-cooled crucible, and the vacuum system is connected with the furnace body.
2. The non-consumable arc floating bipolar melting equipment according to claim 1, characterized in that: The arc melting system includes a lifting motor, an arc gun, a tungsten electrode, a water-cooled crucible, an anode cable, an arc melting power supply, and a cathode cable. The lifting motor is arranged above the furnace body, and a first pulley is installed at the output end of the lifting motor. A second pulley is installed on the outer side of the vertical arc gun. The second pulley is connected to the arc gun through a spiral transmission. The two pulleys are arranged opposite to each other and connected through a belt. The lifting motor drives the first pulley and the second pulley in turn to control the lifting of the arc gun; the upper end of the arc gun is connected to the cathode cable, and the lower end of the arc gun is connected to the tungsten electrode. The arc gun and the tungsten electrode are combined into an arc melting cathode. The lower part of the tungsten electrode corresponds to the water-cooled crucible. The water-cooled crucible is installed inside the furnace body. The lower part of the water-cooled crucible is connected to the anode cable. The cathode cable and the anode cable are respectively connected to the arc melting power supply to form a power supply circuit.
3. The non-consumable arc floating bipolar melting equipment according to claim 1, characterized in that: The melt suspension system includes a suspension smelting loop cable, a suspension smelting power supply, a flip electrode, and an electromagnetic induction coil. A water-cooled crucible is placed above or inside the electromagnetic induction coil. One end of the flip electrode is connected to the electromagnetic induction coil, and the other end of the flip electrode is connected to the suspension smelting power supply through the suspension smelting loop cable. The electromagnetic induction coil, the flip electrode, the suspension smelting loop cable, and the suspension smelting power supply are connected in sequence to form a loop.
4. The non-consumable arc floating bipolar melting equipment according to claim 1, characterized in that: The circulating water system comprises a water-cooled crucible circulating water circuit, a water cooler, a return water arc gun cooling water pipe, and an inlet water arc gun cooling water pipe. The water cooler is connected to the outlet of the circulating water channel on the arc gun through the return water arc gun cooling water pipe, and the water cooler is connected to the inlet of the circulating water channel on the arc gun through the inlet water arc gun cooling water pipe, and the arc gun is cooled by circulating water; the water cooler is respectively connected to the inlet and outlet of the circulating water channel on the water-cooled crucible through the water-cooled crucible circulating water circuit, and the water-cooled crucible is cooled by circulating water.
5. The non-consumable arc floating bipolar melting equipment according to claim 1, characterized in that: The vacuum system comprises a vacuum valve and a vacuum pump group. The vacuum pump group is connected with the inner cavity of the furnace body through a pipeline, and the vacuum valve is arranged on the pipeline.