Liquid cooling conductive flange for vacuum consumable electric arc furnace

Abstract

The utility model relates to a liquid-cooled conductive flange for a vacuum consumable electric arc furnace, which comprises a flange body, a metal pipe is embedded at the upper end of the flange body, two ends of the metal pipe are led out from the side wall of the flange body, cooling water leads out heat in the flange through the metal pipe, and the heat in the flange can be dissipated through the metal pipe while the conductivity and the sealing performance of the flange are not influenced. Heat in the flange is led out, and it is effectively ensured that the flange and the sealing ring for the vacuum consumable electrode furnace operate within the safe temperature.

Description

Technical Field

[0001] The utility model relates to a titanium and titanium alloy production device, in particular to a liquid-cooled conductive flange for a vacuum consumable arc furnace. Background Art

[0002] High-temperature smelting of titanium and titanium alloys usually requires a vacuum consumable arc furnace. During the smelting process, a large DC current needs to be passed through the vacuum consumable arc furnace to act on the smelted material. The upper furnace body and the copper crucible are directly in contact with each other using a copper-copper flange for conductivity, so that the vacuum consumable furnace can pass the current to the crucible for smelting. At the end of the smelting, due to the high temperature in the crucible and the current passing through the conductive flange, the temperature of the conductive flange reaches above 130°C, which can easily cause the sealing ring in the conductive flange to be damaged due to high temperature, forcing the vacuum consumable furnace to stop smelting. The conductive flange cannot be effectively cooled, which poses a great hidden danger to the production of vacuum consumable furnaces. In actual applications, the flange is also cooled by external air cooling, but the temperature cannot be effectively reduced because the area of ​​the flange body exposed to the outside is small. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model proposes a liquid-cooled conductive flange for a vacuum consumable arc furnace, which removes heat from the flange by liquid cooling, effectively ensuring that the flange and sealing ring for the vacuum consumable furnace operate within a safe temperature.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A liquid-cooled conductive flange for a vacuum consumable arc furnace comprises a flange body, the upper end of which is embedded with a hollow metal tube, and the two ends of the metal tube are led out from the side wall of the flange body.

[0006] Preferably, a groove is provided at the upper end of the flange body, and the metal tube is fixedly embedded in the groove by sealing lead, and the highest point of the metal tube is lower than the notch of the groove.

[0007] Preferably, the groove is close to the outer edge of the upper end of the flange body.

[0008] Preferably, the groove is an arc-shaped groove with a depth of 18 to 21 mm and a notch width of 15 mm.

[0009] Preferably, the metal tube is circular with an outer diameter of 14 mm and a wall thickness of 1 mm.

[0010] Preferably, the groove is a square groove with a depth of 15 to 20 mm and a width of 10 to 15 mm.

[0011] Preferably, the metal tube is square, with a height of 14 to 18 mm and a width of 9 to 14 mm.

[0012] Preferably, both ends of the metal tube are led out from the side wall of the flange body by 80 to 110 mm.

[0013] Preferably, the metal tube is a copper tube.

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

[0015] The utility model provides a groove on the flange body, embeds a metal pipe into the groove and fixes it with a sealing lead, and the coolant conducts the heat in the flange through the metal pipe, which improves the cooling efficiency inside the flange without affecting the conductivity and sealing of the flange, and effectively ensures that the flange and the sealing ring of the vacuum consumable furnace operate within a safe temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the liquid-cooled conductive flange of the utility model;

[0017] Figure numerals: 1. flange body, 2. metal pipe, 3. groove, 4. sealing strip, 5. mounting hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] refer to Figure 1 The present embodiment proposes a liquid-cooled conductive flange for a vacuum consumable arc furnace, comprising a flange body 1, wherein a hollow metal tube 2 is embedded in the upper end of the flange body 1. Preferably, a groove 3 is provided in the upper end of the flange body 1, and the metal tube 2 is fixedly embedded in the groove 3 by sealing lead. The highest point of the metal tube 2 is lower than the notch of the groove 3, and both ends of the metal tube 2 are led out from the side wall of the flange body 1 through the groove 3. A sealing ring 4 is also embedded in the upper end of the flange body 1, and a mounting hole 5 is provided.

[0020] In this embodiment, the metal tube 2 is fixedly embedded in the groove 3 by sealing lead, which is convenient for processing. Because the flange is large, it is impossible to weld the metal tube 2 in the groove into the groove 3 by welding. The high temperature of welding will cause the flange to deform as a whole and cannot be used. When in use, the flange is installed between the furnace body and the copper crucible on the vacuum consumable arc furnace through bolts and mounting holes 5. The two lead ends of the metal tube 2 are respectively connected to the water inlet pipe and the water outlet pipe. Water below 30°C is introduced into the metal tube through the water inlet pipe. The heat inside the flange is transferred to the metal tube 2 through the lead, and the metal tube 2 is then transferred to the coolant and taken out by the coolant, thereby playing a good cooling effect on the inside of the flange, ensuring that the flange body 1 and the sealing ring 4 work below the safe temperature, avoiding the forced stop of the smelting process, and improving the smelting efficiency. In this embodiment, the metal tube 2 is fixed in the groove 3 by sealing lead. The lead is resistant to high temperature, has good stability, good conductivity, and good sealing, which can ensure the normal operation of the flange during the smelting process. In this embodiment, the minimum temperature of the flange can be reduced from 130°C to below 90°C. The coolant is preferably water.

[0021] The processing method of this embodiment comprises the following steps:

[0022] S1, take out the flange body 1 with the sealing ring 4 and the mounting hole 5 on the upper end surface, and use a lathe to carve out a groove 3 on the upper end surface of the flange body 1;

[0023] S2. Place the metal tube 2 into the groove 3, ensuring that the highest point of the metal tube 2 is lower than the notch of the groove 3, i.e., the upper end surface of the flange body 1;

[0024] S3, heating the lead block, filling the groove 3 with the lead solution, and sealing the metal tube 2 in the groove 3;

[0025] S4. After the lead solution solidifies, grind the lead sealing surface to make it smooth to ensure the sealing of the flange.

[0026] Preferably, the groove 3 is close to the outer edge of the upper end of the flange body 1 , and the sealing ring 4 is located between the inner edge of the flange body 1 and the groove 3 .

[0027] During the smelting process, the crucible is placed in a cooling device, and cold water below 30 degrees flows in from the bottom of the cooling device. After the crucible is cooled, the temperature rises and flows out from the opening at the upper end of the cooling device. The distance from the upper end of the cooling device to the lower end of the flange body is generally about 1m. Therefore, the temperature of the flange body 1 close to the inner edge is lower than that of the outer edge. The groove 3 is close to the outer edge of the upper end of the flange body 1, and the metal tube 2 is close to the outer edge of the upper end of the flange body 1, so the inside of the flange body 1 can be cooled quickly.

[0028] Preferably, the groove 3 is arc-shaped, with a depth of 18 to 21 mm and a notch width of 15 mm. The metal tube 2 has an outer diameter of 14 mm and a wall thickness of 1 mm.

[0029] In this embodiment, the groove 3 is set to be 18 to 21 mm deep and the groove width is 15 mm. If the groove 3 is too wide or too deep, the flange body 1 will be easily deformed and cannot be used. If it is too shallow or the groove is too narrow, the metal tube 2 embedded in the groove 3 is thin, which affects the cooling efficiency of the cooling water.

[0030] In this embodiment, the groove can also be set to a square or other shapes, and the metal tube can also be set to other shapes, as long as the requirements are met and the flange is not deformed and the sealing of the flange is not affected.

[0031] Preferably, both ends of the metal tube 2 are led out from the side wall of the flange body 1 by 80 to 110 mm, which can ensure that the two ends of the metal tube 2 are firmly connected to the water inlet pipe and the water outlet pipe respectively, and will not be easily disconnected due to the connection being too short.

[0032] Preferably, the metal tube is a copper tube, which has excellent strength and electrical conductivity and does not affect the heating efficiency of the crucible.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A liquid-cooled conductive flange for a vacuum consumable arc furnace, characterized in that: It comprises a flange body (1), a hollow metal tube (2) being embedded at the upper end of the flange body (1), and two ends of the metal tube (2) being led out from the side wall of the flange body (1).

2. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 1, characterized in that: A groove (3) is provided at the upper end of the flange body (1), and the metal tube (2) is fixedly embedded in the groove (3) by sealing lead, and the highest point of the metal tube (2) is lower than the notch of the groove (3).

3. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 2, characterized in that: The groove (3) is close to the outer edge of the upper end of the flange body (1).

4. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 2, characterized in that: The groove (3) is an arc-shaped groove with a depth of 18 to 21 mm and a notch width of 15 mm.

5. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 4, characterized in that: The metal tube (2) is circular, with an outer diameter of 14 mm and a wall thickness of 1 mm.

6. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 2, characterized in that: The groove (3) is a square groove with a depth of 15 to 20 mm and a width of 10 to 15 mm.

7. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 6, characterized in that: The metal tube is square, with a height of 14 to 18 mm and a width of 9 to 14 mm.

8. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 1, characterized in that: Both ends of the metal tube (2) are led out from the side wall of the flange body (1) by 80 to 110 mm.

9. The liquid-cooled conductive flange for a vacuum consumable arc furnace according to claim 1, characterized in that: The metal tube (2) is a copper tube.

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