Material pouring sealing device for GH4097 high-temperature mother alloy vacuum induction melting furnace

Abstract

The utility model belongs to the technical field of metallurgy, and particularly discloses a material pouring sealing device for a GH4097 high-temperature mother alloy vacuum induction melting furnace, the material pouring sealing device is arranged on a furnace cover of the high-temperature mother alloy smelting furnace, and the material pouring sealing device can be used for sealing the high-temperature mother alloy smelting furnace by operating a material pouring rod arranged on the material pouring sealing device. By means of the pouring head, bridging nodules formed by metal solid materials accumulated at a crucible opening in the smelting furnace of the high-temperature mother alloy fall back into the crucible to be continuously melted through the pouring head, the problems of accumulation and blockage of the crucible opening in the smelting furnace of the high-temperature mother alloy are effectively solved, and the smelting efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical technology, specifically relating to a material pouring and sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy. Background Technology

[0002] The smelting of GH4097 high-temperature master alloy is a process that uses medium-frequency induction heating under vacuum conditions to melt metals and alloys, and finally cast them into alloy rods. In the smelting process of GH4097 high-temperature master alloy, inert metal elements such as nickel, cobalt, chromium, manganese, niobium, tungsten, molybdenum, zirconium, titanium, and aluminum are generally used. These metal elements, which have high melting points, need to be added to the crucible in the high-temperature master alloy smelting furnace before the molten steel melts, that is, before vacuuming and closing the furnace lid. However, due to the limited area and volume of the crucible, solid metal raw materials tend to accumulate above the crucible opening. After the furnace lid is closed and vacuuming begins, these solid metal materials form bridging nodules through spot welding. Due to their own gravity, they cannot fall back into the molten steel in the crucible, resulting in incomplete melting of the high-temperature alloy, wasting metal raw materials, and over time, clogging the crucible opening in the high-temperature master alloy smelting furnace, thus preventing the high-temperature alloy smelting process from proceeding normally. Therefore, a material discharge device was designed to clear the accumulated raw materials at the crucible opening in the smelting furnace of high-temperature master alloy, effectively ensuring the normal progress of the smelting operation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a material discharge sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy. This device effectively solves the problem of material accumulation at the crucible opening in the furnace, which clogs the crucible opening, leading to material waste and preventing the melting operation from proceeding normally.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A material discharge sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy is characterized in that: the tamping rod is a hollow tube, the upper end of the tamping rod is provided with a plug, the lower end of the tamping rod is provided with a plug thread, the top of the plug is connected to an air inlet pipe, the side of the plug is connected to an air outlet pipe, and the plug thread is connected to a material discharge head by a thread.

[0006] Preferably, a sealing bellows is movably connected to the outer wall of the pouring rod. The upper and lower ends of the sealing bellows are respectively provided with a sealing flange and a fixed flange. The sealing flange has holes that match the size of the pouring rod. Several layers of skeleton sealing rings and several layers of graphite packing are arranged inside the holes on the sealing flange, with the graphite packing and skeleton sealing rings alternating. An end cap is provided on the hole of the sealing flange, and a set screw is provided on the side of the end cap. The end cap is connected to the sealing flange by bolts. A sealing fixing platform is bolted to the lower end of the fixed flange, and the sealing fixing platform is installed on the furnace cover.

[0007] Preferably, the pouring rod passes through the end cap and extends into the inner cavity of the sealing fixing platform, closely fitting the sealing flange.

[0008] The beneficial effects of this utility model are as follows:

[0009] This invention provides a material discharge sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy. The device is installed on the furnace cover of the furnace. By operating the discharge rod, the discharge head causes the accumulated solid metal material at the crucible opening in the furnace to form a "bridging" nodule and fall back into the crucible to continue melting. This effectively solves the problem of crucible opening accumulation and blockage in the furnace and improves melting efficiency.

[0010] This invention provides a material pouring sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy. By introducing flowing air into the air inlet and outlet pipes, the temperature of the material pouring rod and the material pouring head is reduced during material pouring, thus preventing burns to the operator. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the material pouring and sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy, as described in this utility model.

[0012] Figure 2 This is a partial structural diagram of the material pouring sealing device for a vacuum induction melting furnace for GH4097 high-temperature master alloy described in this utility model.

[0013] In the diagram: 1. Sealing bellows; 11. Sealing flange; 12. Fixed flange; 13. Skeleton sealing ring; 14. Graphite packing; 15. End cap; 16. Bolt; 17. Set screw; 2. Sealing fixing platform; 3. Tamping rod; 31. Plug; 32. Plug screw; 33. Discharge head; 34. Air inlet pipe; 35. Air outlet pipe. Detailed Implementation

[0014] 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.

[0015] like Figure 1 and Figure 2 The diagram shows a material pouring and sealing device for a vacuum induction melting furnace of GH4097 high-temperature master alloy. The material tamping rod 3 is a hollow tube with a plug 31 at its upper end and a plug thread 32 at its lower end. An air inlet pipe 34 is connected to the top of the plug 31, and an air outlet pipe 35 is connected to the side of the plug 31. Flowing air is introduced through the air inlet pipe 34 and the air outlet pipe 35, effectively reducing the temperature of the material pouring device. A material pouring head 33 is threadedly connected to the plug thread 32, facilitating its removal from the plug thread 32. Regular cleaning of any metal residue adhering to the material pouring head 33 is performed. Sealing corrugations are connected to the material pouring rod 3. The upper and lower ends of the pipe 1 and the sealing bellows pipe 1 are respectively provided with sealing flange 11 and fixed flange 12. The sealing flange 11 is provided with holes that match the size of the pouring rod 3. Several layers of skeleton sealing rings 13 and several layers of graphite packing 14 are provided inside the holes. The skeleton sealing rings 13 and several layers of graphite packing 14 are arranged alternately. The top of the holes on the sealing flange 11 is provided with end cap 15. The end cap 15 is connected to the sealing flange 11 by bolts 16 to ensure that no gas leakage occurs in the blast furnace when the pouring rod 3 interacts with the sealing flange 11. The side of the end cap 15 is provided with set screw 17. The position of the pouring rod 3 can be controlled by operating the set screw 17.

[0016] The lower end of the fixed flange 12 is connected to a sealing fixing platform 2 by bolts. The sealing fixing platform 2 is set on the furnace cover of the smelting furnace. The pouring rod 3 and the pouring head 33 penetrate the end cover 15 and extend into the inner cavity of the sealing fixing platform 2, closely attached to the inner wall of the hole of the sealing flange 11. The pouring head 33 is located above the opening of the smelting furnace cover.

[0017] When using this device, the operator lowers or removes the pouring rod 3, and the pouring rod 3 moves on the sealing flange 11. Since the inner wall of the hole on the sealing flange 11 that matches the pouring rod 3 is provided with a skeleton sealing ring 13 and a graphite packing 14, and the end cap 15 is fixed by bolts 16 after the pouring rod 3 is installed, the vacuum furnace can be better kept in a vacuum state during the pouring operation, and the phenomenon of air leakage in the high-temperature alloy melting furnace will not occur.

[0018] Before starting the furnace for smelting the high-temperature master alloy, the material pouring sealing device of this utility model for a vacuum induction melting furnace of GH4097 high-temperature master alloy is installed and adjusted. Before starting the melting operation, the air inlet pipe 34 is connected to an external air source through a flexible hose, and the air outlet pipe 35 is connected to the exhaust pipe through a flexible hose. Flowing air is introduced from the air inlet pipe 34 of the material pouring rod 3. The air inlet pipe 34 extends to the bottom of the material pouring rod 3, and the flowing air enters the hollow inner cavity of the material pouring rod 3, which can lower the material pouring rod 3 and the material pouring head. At a temperature of 33, flowing air is discharged from the exhaust pipe 35, effectively preventing operators from being burned during use. Loosen the set screw 17, lower the tamping rod 3 and the pouring head 33 as a whole, and adjust them to a suitable position. After the smelting operation begins, the position of the tamping rod 3 can be adjusted, and the pouring head 33 can be aligned with the bridging and nodulation area of ​​the metal raw material accumulated at the crucible mouth. The material at the crucible mouth inside the furnace for smelting high-temperature master alloy is poured out regularly to prevent the accumulation of metal raw material at the crucible mouth from bridging and nodulation, which would affect the normal operation of high-temperature smelting.

[0019] After use, the tamping rod 3 and the pouring head 33 can be pulled out to the top of the high-temperature furnace cover. Remove the hoses connected to the air inlet pipe 34 and the air outlet pipe 35. Then, fix the tamping rod 3 in a suitable position by tightening the set screw 17. If necessary, the sealing fixing platform 2 can be removed from the blast furnace cover, and the entire pouring device can be removed from the blast furnace cover.

[0020] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tapping seal for a GH4097 high temperature superalloy vacuum induction melting furnace comprising a tamping rod, characterised in that: The tamping rod (3) is a hollow tube. The upper end of the tamping rod (3) is provided with a plug (31), and the lower end of the tamping rod (3) is provided with a plug wire (32). The top of the plug (31) is connected to an air inlet pipe (34), the side of the plug (31) is connected to an air outlet pipe (35), and the plug wire (32) is connected to a pouring head (33).

2. A pouring seal for a GH4097 high temperature superalloy vacuum induction melting furnace as defined in claim 1, wherein: A sealing bellows (1) is movably connected to the outer wall of the tamping rod (3). The upper and lower ends of the sealing bellows (1) are respectively provided with a sealing flange (11) and a fixed flange (12). The sealing flange (11) is provided with a hole, which matches the size of the tamping rod (3). Several layers of skeleton sealing rings (13) and several layers of graphite packing (14) are provided inside the hole on the sealing flange (11). The graphite packing (14) and skeleton sealing rings (13) are alternately arranged. An end cap (15) is provided on the hole of the sealing flange (11). A set screw (17) is provided on the side of the end cap (15). The end cap (15) is connected to the sealing flange (11) by bolts (16). The lower end of the fixed flange (12) is connected to a sealing fixing platform (2) by bolts. The sealing fixing platform (2) is installed on the furnace cover.

3. A pouring seal for a GH4097 superalloy vacuum induction melting furnace as defined in claim 1, wherein: The tamping rod (3) passes through the end cap (15) and extends into the inner cavity of the sealing fixing platform (2) close to the sealing flange (11).

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