Efficient vacuum consumable electrode furnace

Abstract

The utility model relates to the technical field of consumable electrode vacuum furnaces, in particular to an efficient consumable electrode vacuum furnace. The efficient vacuum consumable electrode furnace comprises a consumable electrode furnace body and a cooling mechanism, the cooling mechanism comprises an intelligent sensing assembly, a first cooling assembly and a second cooling assembly; the first cooling assembly comprises a first water jacket; the second cooling assembly comprises a second water jacket; an inner-layer water cooling space is formed between the first water jacket and the crucible, and an outer-layer water cooling space is formed between the second water jacket and the first water jacket; the intelligent sensing assembly comprises a sensor arranged on the first water outlet pipe and a first switch valve arranged on the second water inlet pipe; the sensor is electrically connected with the first switch valve. The efficient self-consuming vacuum furnace has a double-layer water cooling structure, the cooling rate of the crucible can be remarkably increased, so that the metal solidification speed is increased, meanwhile, the effect of recovering and taking away heat is achieved, and in addition, the inner and outer layer water cooling spaces are spaced for a certain time to form gradient cooling which can inhibit the overgrowth of columnar crystals; therefore, the production efficiency and the quality stability are improved simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of vacuum self-consuming furnace technology, and more specifically, to a high-efficiency vacuum self-consuming furnace. Background Technology

[0002] A vacuum arc remelting furnace is a key piece of equipment used for melting high-purity metals (such as titanium, zirconium, hafnium, and other reactive metals). Its core principle is to generate an electric arc in a vacuum environment using consumable electrodes, melting the electrode material and dripping it into a water-cooled copper crucible to form a directionally solidified metal ingot. The vacuum arc remelting furnace mainly consists of the following parts: Vacuum system: maintaining a high vacuum environment inside the furnace (typically ≤10). -3 Pa) to prevent metal oxidation; Electrode system: Consumable electrodes are used as smelting raw materials, and the consumption rate is controlled by the feeding mechanism; Water-cooled copper crucible: Cooling water is circulated at the bottom to quickly cool the molten pool to achieve solidification; Power supply system: Provides stable arc energy, with a power range typically from 500kW to 5MW.

[0003] In the water-cooled copper crucible section, the cooling efficiency of the vacuum arc furnace directly affects the quality of the metal ingots and energy consumption. Currently, the cooling systems of traditional vacuum arc furnaces still have some significant problems: firstly, the heat dissipation capacity of a single-layer water-cooled crucible is limited, resulting in slow metal solidification and coarse grains; secondly, cooling energy consumption accounts for a high proportion, and there is a lack of waste heat recovery mechanisms. These problems restrict the production efficiency and quality stability of high-end metal materials.

[0004] The cooling efficiency of a vacuum arc remelting furnace directly affects the density, grain size, and energy consumption of metal ingots. Therefore, developing a new type of high-efficiency vacuum arc remelting furnace has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency vacuum self-consuming furnace with a double-layer water-cooling structure. This structure not only significantly improves the cooling rate of the crucible, thereby increasing the metal solidification rate, but also allows the outer water-cooling layer to exchange heat absorbed by the inner water-cooling layer again, thus recovering and removing heat. Furthermore, after the inner water-cooling space completes the first round of water cooling, the outer water-cooling space can be intelligently activated for water cooling. The gradient cooling formed by the interval between the inner and outer water-cooling spaces at a certain time can inhibit the excessive growth of columnar crystals, thereby improving both production efficiency and quality stability.

[0006] To achieve the above objectives, the preferred solution adopted by this utility model is:

[0007] A high-efficiency vacuum self-consuming furnace includes: a furnace body and a cooling mechanism; the cooling mechanism includes an intelligent sensing component, a first cooling component, and a second cooling component; the first cooling component includes a first water jacket, a first water inlet pipe and a first water outlet pipe connected and communicating with the first water jacket; the second cooling component includes a second water jacket, a second water inlet pipe and a second water outlet pipe connected and communicating with the second water jacket; both the first and second water jackets are detachably connected to the crucible of the furnace body; the first water jacket is fitted onto the crucible, and the second water jacket is fitted onto the first water jacket; an inner water-cooled space is formed between the first water jacket and the crucible, and an outer water-cooled space is formed between the second water jacket and the first water jacket; the intelligent sensing component includes a sensor disposed on the first water outlet pipe and a first switching valve disposed on the second water inlet pipe; the sensor is electrically connected to the first switching valve.

[0008] Furthermore, in a preferred embodiment of the present invention, the first inlet pipe is disposed on the side wall of the first water jacket near its bottom, and the first outlet pipe is disposed on the side wall of the first water jacket near its top; both the first inlet pipe and the first outlet pipe penetrate through the side wall of the second water jacket.

[0009] Furthermore, in a preferred embodiment of the present invention, the second water inlet pipe is disposed on the side wall of the second water jacket near its bottom, and the second water outlet pipe is disposed on the side wall of the second water jacket near its top.

[0010] Furthermore, in a preferred embodiment of this utility model, the first inlet pipe and the first outlet pipe are respectively disposed on both sides of the first water jacket.

[0011] Furthermore, in a preferred embodiment of this utility model, the second inlet pipe and the second outlet pipe are respectively disposed on both sides of the second water jacket.

[0012] Furthermore, in a preferred embodiment of this utility model, the second water inlet pipe and the first water outlet pipe are located on the same side, and the first water inlet pipe and the second water outlet pipe are located on the same side.

[0013] Furthermore, in a preferred embodiment of this utility model, the second water inlet pipe is located below the first water inlet pipe, and the second water outlet pipe is located above the first water outlet pipe.

[0014] Furthermore, in a preferred embodiment of the present invention, the intelligent sensing component further includes a second switching valve disposed on the first water inlet pipe, a third switching valve disposed on the first water outlet pipe, and a fourth switching valve disposed on the second water outlet pipe.

[0015] The beneficial effects of the high-efficiency vacuum arc furnace provided by this utility model are:

[0016] The high-efficiency vacuum self-consuming furnace provided by this utility model includes a furnace body and a cooling mechanism. Based on the structural design of the cooling mechanism and the design of its connection with the furnace body, the resulting high-efficiency vacuum self-consuming furnace can achieve:

[0017] (1) Double-layer crucible design: This application adopts an inner and outer double-layer independent circulating water circuit, which can not only significantly improve the cooling rate of the crucible and thus improve the metal solidification speed, but also the outer water cooling can exchange the heat absorbed by the inner water cooling again, playing the role of recovering and taking away the heat of the inner layer.

[0018] (2) Dynamic timing control: In this application, the inner layer cooling is started first and maintained at a high flow rate. The outer layer cooling can be intelligently started after the first round of water cooling is completed in the inner layer water cooling space. The excessive growth of columnar crystals can be suppressed by gradient cooling. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A partial longitudinal cross-sectional schematic diagram of the high-efficiency vacuum self-consuming furnace provided in this embodiment of the utility model;

[0021] Figure 2 A partial cross-sectional schematic diagram of the high-efficiency vacuum self-consuming furnace provided in this embodiment of the utility model;

[0022] Icons: 10-High-efficiency vacuum arc furnace, 100-First cooling component, 200-Second cooling component, 300-Inner water-cooled space, 400-Outer water-cooled space, 500-Arc furnace body, 510-Crucible, 600-Cooling mechanism, 110-First water jacket, 120-First water inlet pipe, 130-First water outlet pipe, 210-Second water jacket, 220-Second water inlet pipe, 230-Second water outlet pipe, 310-First switching valve, 320-Second switching valve, 330-Third switching valve, 340-Fourth switching valve, 350-Sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Example 1

[0027] The following is in conjunction with the appendix Figure 1-2 The present invention will be further described as follows:

[0028] This utility model provides a high-efficiency vacuum self-consuming furnace 10. Please refer to [link / reference]. Figure 1-2 The high-efficiency vacuum self-consuming furnace 10 includes a furnace body 500 and a cooling mechanism 600.

[0029] The cooling mechanism 600 includes a smart sensing component (not marked in the figure), a first cooling component 100, and a second cooling component 200.

[0030] In this embodiment, the first cooling component 100 includes a first water jacket 110, a first water inlet pipe 120 and a first water outlet pipe 130 connected and communicated with the first water jacket 110.

[0031] The second cooling assembly 200 includes a second water jacket 210, a second inlet pipe 220 and a second outlet pipe 230 connected and communicating with the second water jacket 210.

[0032] The intelligent sensing component includes a first switching valve 310 disposed on the second water inlet pipe 220, a second switching valve 320 disposed on the first water inlet pipe 120, a third switching valve 330 and a sensor 350 disposed on the first water outlet pipe 130, and a fourth switching valve 340 disposed on the second water outlet pipe 230, wherein the sensor 350 is electrically connected to the first switching valve 310.

[0033] In this embodiment, a first water jacket 110 is fitted onto the crucible 510, and a second water jacket 210 is fitted onto the first water jacket 110. An inner water-cooling space 300 is formed between the first water jacket 110 and the crucible 510, and an outer water-cooling space 400 is formed between the second water jacket 210 and the first water jacket 110. Both the first water jacket 110 and the second water jacket 210 are detachably connected to the crucible 510 of the consumable furnace body 500.

[0034] In this embodiment, the first inlet pipe 120 and the first outlet pipe 130 are respectively disposed on both sides of the first water jacket 110. The first inlet pipe 120 is disposed on the side wall of the first water jacket 110 near its bottom, and the first outlet pipe 130 is disposed on the side wall of the first water jacket 110 near its top. Both the first inlet pipe 120 and the first outlet pipe 130 penetrate through the side wall of the second water jacket 210.

[0035] The second inlet pipe 220 and the second outlet pipe 230 are respectively disposed on both sides of the second water jacket 210. The second inlet pipe 220 is disposed on the side wall of the second water jacket 210 near its bottom, and the second outlet pipe 230 is disposed on the side wall of the second water jacket 210 near its top.

[0036] In this embodiment, the second inlet pipe 220 and the first outlet pipe 130 are located on the same side, and the first inlet pipe 120 and the second outlet pipe 230 are located on the same side. The second inlet pipe 220 is located below the first inlet pipe 120, and the second outlet pipe 230 is located above the first outlet pipe 130.

[0037] The high-efficiency vacuum self-consuming furnace 10 provided in this embodiment operates as follows: When the cooling mechanism 600 needs to be activated, the second switch valve 320, the third switch valve 330, and the fourth switch valve 340 are opened. Cooling water enters the inner water-cooled space 300 from the first inlet pipe 120 and exits from the first outlet pipe 130. After the sensor detects the water flow, it sends a signal to the receiver of the first switch valve 310. Upon receiving the signal, the first switch valve 310 opens, and cooling water enters the outer water-cooled space 400 from the second inlet pipe 220 and exits from the second outlet pipe 230. The two independent circulating water paths perform gradient cooling on the crucible 510 until it is cooled to the appropriate degree, at which point the water supply stops.

[0038] In summary, the high-efficiency vacuum arc furnace 10 provided in this embodiment has a double-layer water-cooling structure, which can not only significantly improve the cooling rate of the crucible 510 and thus increase the metal solidification speed, but also allow the outer layer water cooling to exchange heat absorbed by the inner layer water cooling again, while also playing a role in heat recovery and removal. In addition, after the inner layer water cooling space 300 completes the first round of water cooling, the outer layer water cooling space 400 can be intelligently opened for water cooling. The gradient cooling formed by the inner and outer layer water cooling spaces 400 at certain intervals can suppress the excessive growth of columnar crystals, thereby improving both production efficiency and quality stability.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high efficiency vacuum consumable furnace characterized by: include: Consumable waste furnace body and cooling mechanism; The cooling mechanism includes a smart sensing component, a first cooling component, and a second cooling component; The first cooling assembly includes a first water jacket, a first inlet pipe and a first outlet pipe connected and in communication with the first water jacket; The second cooling assembly includes a second water jacket, a second inlet pipe and a second outlet pipe connected and in communication with the second water jacket; Both the first water jacket and the second water jacket are detachably connected to the crucible of the self-consuming furnace body; The first water jacket is fitted onto the crucible, and the second water jacket is fitted onto the first water jacket; an inner water-cooling space is formed between the first water jacket and the crucible, and an outer water-cooling space is formed between the second water jacket and the first water jacket; The intelligent sensing component includes a sensor disposed on the first water outlet pipe and a first switching valve disposed on the second water inlet pipe; the sensor is electrically connected to the first switching valve.

2. The high-efficiency vacuum self-consuming furnace according to claim 1, characterized in that: The first inlet pipe is located on the side wall of the first water jacket near its bottom, and the first outlet pipe is located on the side wall of the first water jacket near its top; both the first inlet pipe and the first outlet pipe pass through the side wall of the second water jacket.

3. The high efficiency vacuum consumable furnace of claim 2, wherein: The second inlet pipe is located on the side wall of the second water jacket near its bottom, and the second outlet pipe is located on the side wall of the second water jacket near its top.

4. The high efficiency vacuum consumable furnace of claim 3 wherein: The first inlet pipe and the first outlet pipe are respectively located on both sides of the first water jacket.

5. The high efficiency vacuum consumable furnace of claim 4 wherein: The second inlet pipe and the second outlet pipe are respectively located on both sides of the second water jacket.

6. The high efficiency vacuum consumable furnace of claim 5 wherein: The second water inlet pipe and the first water outlet pipe are located on the same side, and the first water inlet pipe and the second water outlet pipe are located on the same side.

7. The high efficiency vacuum consumable furnace of claim 6 wherein: The second water inlet pipe is located below the first water inlet pipe, and the second water outlet pipe is located above the first water outlet pipe.

8. The high efficiency vacuum consumable furnace of claim 1 wherein: The intelligent sensing component also includes a second switching valve disposed on the first water inlet pipe, a third switching valve disposed on the first water outlet pipe, and a fourth switching valve disposed on the second water outlet pipe.

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