Production method of iron-based high-temperature alloy wire

Abstract

The invention relates to the technical field of iron-based alloys, in particular to a production method of an iron-based high-temperature alloy wire, which comprises the following steps: preparing raw materials taking Fe as a matrix according to mass percent; raw materials are smelted in a vacuum induction furnace, the temperature is controlled to be 1500-1600 DEG C, component homogenization is achieved through electromagnetic stirring, the obtained iron-based high-temperature alloy melt is poured into a cast ingot, the cast ingot is heated to 1100-1200 DEG C, heat preservation is conducted for 2-4 hours, and a steel wire rod with the diameter being 20-30 mm is manufactured through hot rolling; according to the production method of the iron-based high-temperature alloy wire, integrated production can be achieved starting from the raw materials, the raw materials are smelted in cooperation with the vacuum induction furnace, the temperature can be controlled more accurately, and the time needed for vacuumizing is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of iron-based alloys, and specifically to a production method of iron-based superalloy wire rods. Background Art

[0002] Iron-based superalloy wire rods are wire rods made of a certain amount of alloy with iron as the matrix. Taking iron as the matrix ensures the basic strength and hardness of the material, and has relatively high tensile strength and yield strength. It has certain strength, oxidation resistance and gas corrosion resistance under the conditions of 600-800 °C. The production of iron-based superalloy wire rods is usually made by hot rolling and wire drawing of iron-based superalloys. During the production of iron-based superalloys, precise temperature control is required for the melting of raw materials. When melting by electronic temperature control in a vacuum induction furnace, since the vacuum induction furnace needs to be evacuated, the traditional method of slowly evacuating the whole process by a vacuum pump takes a long time, affecting production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a production method of iron-based superalloy wire rods to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A production method of iron-based superalloy wire rods, the method comprising the following steps: Step 1, prepare raw materials with Fe as the matrix according to mass percentage; Step 2, melt the raw materials in a vacuum induction furnace, control the temperature at 1500-1600 °C, and achieve uniform composition through electromagnetic stirring; Step 3, pour the iron-based superalloy melt obtained in Step 2 into an ingot, heat the ingot to 1100-1200 °C and keep it warm for 2-4 hours, and make it into a Φ20-30mm wire rod through hot rolling; Step 4, pickling the wire rod with hydrochloric acid to remove the oxide scale, then cleaning it with anhydrous ethanol and dipping it in a composite lubricant, and drying it for later use; Step 5, after rough cold drawing and fine cold drawing in sequence, make the wire rod reach the target diameter; Step 6, perform heat treatment strengthening and then polishing to obtain iron-based superalloy wire rods.

[0005] In the above Step 1, the proportion of the raw material Fe matrix is greater than or equal to sixty percent; The raw materials further include: Cr, Ni, Mo, Nb, Ti.

[0006] The vacuum induction furnace includes a vacuum furnace chamber and a top cover that can open and close and is provided on the vacuum furnace chamber. A crucible is provided inside the vacuum furnace chamber, and the raw materials are melted in the crucible. An electromagnetic induction coil is provided on the surface of the crucible, and electromagnetic induction heating is performed on the raw materials through the electromagnetic induction coil; A reflux gas chamber pipe is provided outside the vacuum furnace chamber. A main pipe is connected and communicated between the reflux gas chamber pipe and the vacuum furnace chamber. A main valve for controlling the on-off of the main pipe is provided on the main pipe. A vacuum pump is connected and communicated outside the main pipe. When the main valve is closed, the vacuum pump can still be connected and communicated with the vacuum furnace chamber through the main pipe; A piston disk that can move axially is provided in the reflux gas chamber pipe; in the initial stage of evacuating the vacuum furnace chamber, the piston disk moves in a direction away from the main pipe, and after moving in place, the main valve is controlled to close.

[0007] A filter cover is fixedly provided on the inner wall surface of the vacuum furnace chamber. The filter cover is communicated with the main pipe. A sealing and matching eaves is fixedly provided in the filter cover. A one-way plug disk is provided on one side of the sealing and matching eaves. A plug disk support elastic piece is provided on the one-way plug disk. Elastic pressure is applied to the one-way plug disk through the plug disk support elastic piece, so that the one-way plug disk is in sealed contact with the sealing and matching eaves; When the gas flows from the vacuum furnace chamber into the filter cover, the one-way plug disk separates from the sealing and matching eaves to open; when the gas flows from the filter cover into the vacuum furnace chamber, the one-way plug disk presses tightly against the sealing and matching eaves to close.

[0008] A filter layer is also provided in the filter cover. A dust discharge and reflux pipe is connected and communicated at the lower part of the filter cover. A right-angle outer pipe is provided outside the vacuum furnace chamber. The lower end of the dust discharge and reflux pipe is connected and communicated with the right-angle outer pipe; A conical inner wall is provided on the inner wall surface of the right-angle outer pipe. An air seal plug is provided below the conical inner wall. When the air seal plug moves upward, it can cooperate with the conical inner wall to achieve sealed contact.

[0009] A tension spring is provided above the air seal plug. The tension spring applies elastic tension to the air seal plug, so that the air seal plug has an upward movement tendency.

[0010] Impact air slits are provided on the inner wall surface of the conical inner wall. A secondary chamber and an explosion chamber are provided in the right-angle outer pipe. A communication air hole is connected and communicated between the secondary chamber and the explosion chamber. Both the secondary chamber and the impact air slits are circular rings and are connected and communicated with each other.

[0011] An atomizing nozzle, a gas supply nozzle, and an igniter are arranged in the explosion chamber. The atomizing nozzle is used to spray a combustible medium into the explosion chamber, the gas supply nozzle is used to spray an oxygen-containing gas into the explosion chamber, and the igniter ignites the combustible medium sprayed by the atomizing nozzle, so that an explosion occurs in the explosion chamber. The explosion shock pressure is ejected through the impact air gap and enters the contact surface between the conical inner wall and the airtight plug.

[0012] A power module is arranged outside the vacuum furnace chamber. A turning shaft is inserted in the vacuum furnace chamber. The turning shaft is in sealed contact with the vacuum furnace chamber. The turning shaft is fixedly installed with the crucible. The turning shaft is controlled to rotate by the power module, so that the crucible can be turned and moved; A ingot casting mold is arranged in the vacuum furnace chamber.

[0013] A moving shaft body is fixedly arranged on the surface of the piston disc. An H-shaped frame is fixedly arranged at the end of the moving shaft body. A hydraulic cylinder is fixedly arranged outside the reflux air chamber pipe. The H-shaped frame is pushed to move by the hydraulic cylinder, so that the moving shaft body drives the piston disc to axially move; A connecting branch pipe is arranged on the surface of the main pipeline. The vacuum pump is communicated with the main pipeline through the connecting branch pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The production method of the iron-based superalloy wire of the present invention can realize integrated production starting from the raw materials, and by cooperating with a vacuum induction furnace to melt the raw materials, the temperature can be more accurately controlled in the range of 1500-1600 °C to ensure the stability of the production quality; In the vacuum induction furnace of the present invention, through the structural settings such as the reflux air chamber pipe and the main valve, when the initial stage of evacuating the vacuum furnace chamber is carried out and the negative pressure required for evacuating the vacuum furnace chamber is relatively low, a large amount of gas can be pumped through the reflux air chamber pipe. In the subsequent stage, the main valve is controlled to close, and the vacuum pump is used to pump the vacuum, which can greatly reduce the time required for pumping the vacuum and improve the production efficiency.

[0015] Through the cooperation of structures such as the filter cover, the one-way plug disc, and the right-angle outer pipe, not only can the gas in the vacuum furnace chamber be filtered during vacuum pumping to prevent dust gas from being inhaled into the vacuum pump and causing blockage; but also the positive pressure airflow generated when the piston disc is controlled to reset and move by the reflux air chamber pipe can be used to realize back blowing and self-cleaning, greatly reducing the maintenance frequency.

[0016] Through the cooperation of structures such as the impact air gap and the explosion chamber, the impact air pressure can be generated by the explosion and intervene between the conical inner wall and the airtight plug to remove the dust between the conical inner wall and the airtight plug, ensuring that the conical inner wall and the airtight plug can be in sealed contact and avoiding the problem that the dust stays between the conical inner wall and the airtight plug and causes the two to be not tightly closed. Brief Description of the Drawings

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is the front view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of a three-dimensional semi-section of the present invention.

[0020] Figure 4 It is Figure 3 an enlarged schematic diagram of area A in

[0021] Figure 5 It is Figure 4 an enlarged schematic diagram of area B in

[0022] Figure 6 It is Figure 5 an enlarged schematic diagram of area C in

[0023] Figure 7 This is the front view of the three-dimensional semi-section of the present invention.

[0024] Figure 8 It is Figure 7 an enlarged schematic diagram of area D in

[0025] In the figure: 1, vacuum furnace chamber; 2, top cover; 3, crucible; 4, electromagnetic induction coil; 5, return gas chamber pipe; 6, main pipeline; 7, main valve; 8, vacuum pump; 9, piston disc; 701, filter cover; 702, sealing and mating eaves; 703, one-way plug disc; 704, plug disc support spring piece; 705, filter layer; 706, dust exhaust and return pipe; 707, right-angled outer pipe; 708, conical inner wall; 709, air seal plug; 710, pull spring; 711, impact air gap; 712, secondary chamber; 713, communication air hole; 714, explosion chamber; 715, atomizing nozzle; 716, gas supply nozzle; 717, igniter; 101, power module; 102, turning shaft; 103, ingot mold; 501, moving shaft body; 502, H-shaped frame; 503, hydraulic cylinder; 601, connecting branch pipe. Detailed Description of the Invention

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 8, the present invention provides a technical solution: a production method of iron-based superalloy wire, which comprises the following steps: Step 1, prepare raw materials with Fe as the matrix according to mass percentages. The proportion of the raw material Fe matrix is greater than or equal to 60%. When the proportion of Fe is 71%, the other raw materials are Cr 12%, Ni 11%, Mo 3%, Nb 2.5%, and Ti 0.5%.

[0028] Step 2, melt the raw materials in a vacuum induction furnace, control the temperature at 1500 - 1600 °C, and achieve compositional homogenization through electromagnetic stirring; the electromagnetic stirring is to generate an alternating magnetic field through an induction coil, form eddy currents in the molten metal, and use electromagnetic force to drive the melt to flow. The molten metal is affected by the Lorentz force in the magnetic field to form a circulating flow that tumbles up and down.

[0029] Step 3, pour the iron-based superalloy melt obtained in Step 2 into an ingot, heat the ingot to 1100 - 1200 °C and keep it warm for 2 - 4 hours, and hot-roll it into a wire rod with a diameter of Φ20 - 30 mm. Control the deformation amount at each hot-rolling between 20 - 30%; Step 4, pickle the wire rod with hydrochloric acid to remove the oxide scale, then wash it with absolute ethanol and dip-coat it with a composite lubricant, and dry it for standby; Step 5, after rough cold drawing and finish cold drawing in sequence, make the wire reach the target diameter; during rough cold drawing, draw it through a circular die at room temperature (deformation amount 30 - 40%) to Φ8 - 12 mm, and anneal it at an intermediate annealing temperature of 600 - 700 °C and keep it warm for 1 - 2 hours to eliminate stress; for finish cold drawing, use a roller die to draw (deformation amount 15 - 25%) to the target diameter (Φ0.5 - 5 mm), and optimize the stress distribution by combining the alternating drawing process.

[0030] Step 6, perform heat treatment strengthening and then polishing to obtain the iron-based superalloy wire.

[0031] The vacuum induction furnace includes a vacuum furnace chamber 1 and a top cover 2 that can open and close and is provided on the vacuum furnace chamber 1. Inside the vacuum furnace chamber 1, there is a crucible 3. The crucible 3 is made of ceramics, and the raw materials are melted in the crucible 3. The surface of the crucible 3 is provided with an electromagnetic induction coil 4. The electromagnetic induction coil 4 is a hollow structure, and cooling water flows through its interior. Electromagnetic induction heating is performed on the raw materials through the electromagnetic induction coil 4; An air return cavity pipe 5 is provided outside the vacuum furnace chamber 1. A main pipeline 6 is connected and communicated between the air return cavity pipe 5 and the vacuum furnace chamber 1. A main valve 7 for controlling the on-off of the main pipeline 6 is provided on the main pipeline 6. An external vacuum pump 8 is connected and communicated to the main pipeline 6. When the main valve 7 is closed, the vacuum pump 8 can still be connected and communicated with the vacuum furnace chamber 1 through the main pipeline 6. The vacuum pump 8 is in a closed state of circulation when it is in a shutdown state, that is, the gas in the main pipeline 6 cannot be connected and communicated with the outside atmosphere through the vacuum pump 8; A piston disc 9 capable of axial movement is provided in the reflux air chamber pipe 5, and the piston disc 9 is in sealing contact with the inner wall surface of the reflux air chamber pipe 5; in the initial stage of evacuating the vacuum furnace chamber 1, the piston disc 9 moves in a direction away from the main pipeline 6, and after moving in place, the main valve 7 is controlled to close.

[0032] As Figure 4 As shown in, a filter cover 701 is fixedly provided on the inner wall surface of the vacuum furnace chamber 1, the filter cover 701 is communicated with the main pipeline 6, a sealing fit eaves 702 is fixedly provided in the filter cover 701, a one-way plug disc 703 is provided on one side of the sealing fit eaves 702, and a plug disc support elastic piece 704 is provided on the one-way plug disc 703. An elastic pressure is applied to the one-way plug disc 703 through the plug disc support elastic piece 704, so that the one-way plug disc 703 is in sealing contact with the sealing fit eaves 702; when gas flows from the vacuum furnace chamber 1 into the filter cover 701, the one-way plug disc 703 and the sealing fit eaves 702 are separated and opened; when gas flows from the filter cover 701 into the vacuum furnace chamber 1, the one-way plug disc 703 and the sealing fit eaves 702 are pressed tightly and closed. A filter layer 705 is also provided in the filter cover 701, a dust discharge reflux pipe 706 is communicated with the lower part of the filter cover 701, and a right-angle outer pipe 707 is provided outside the vacuum furnace chamber 1. The lower end of the dust discharge reflux pipe 706 is communicated with the right-angle outer pipe 707; As Figure 5 As shown in, a conical inner wall 708 is provided on the inner wall surface of the right-angle outer pipe 707, an air seal plug 709 is provided below the conical inner wall 708, and when the air seal plug 709 moves upward, it can cooperate with the conical inner wall 708 to achieve sealing contact. A pull spring 710 is provided above the air seal plug 709, and the pull spring 710 applies an elastic pulling force to the air seal plug 709, so that the air seal plug 709 has an upward movement tendency.

[0033] An impact air gap 711 is formed on the inner wall surface of the conical inner wall 708, a secondary chamber 712 and an explosion chamber 714 are formed in the right-angle outer pipe 707, a communication air hole 713 is communicated between the secondary chamber 712 and the explosion chamber 714, and both the secondary chamber 712 and the impact air gap 711 are circular rings and are communicated with each other.

[0034] An atomizing nozzle 715, a gas supply nozzle 716 and an igniter 717 are provided in the explosion chamber 714. The atomizing nozzle 715 is used to spray a combustible medium into the explosion chamber 714. The combustible medium includes a combustible gas or an atomized combustible liquid. The gas supply nozzle 716 is used to spray an oxygen-containing gas into the explosion chamber 714. The oxygen-containing gas can be air or oxygen. The igniter 717 ignites the combustible medium sprayed by the atomizing nozzle 715, so that an explosion occurs in the explosion chamber 714, and the explosion impact pressure is ejected through the impact air gap 711 and enters the contact surface between the conical inner wall 708 and the air seal plug 709.

[0035] Outside the vacuum furnace chamber 1, a power module 101 is provided. The power module 101 is composed of a motor and a reduction gear set. A turning shaft 102 is inserted into the vacuum furnace chamber 1. The turning shaft 102 is in sealed contact with the vacuum furnace chamber 1. The turning shaft 102 is fixedly installed with the crucible 3. By controlling the rotation of the turning shaft 102 through the power module 101, the crucible 3 can be turned and moved; a ingot casting mold 103 is arranged in the vacuum furnace chamber 1. By turning the crucible 3, the molten metal liquid is poured into the ingot casting mold 103 to form an ingot.

[0036] On the surface of the piston disc 9, a moving shaft body 501 is fixedly arranged. At the end of the moving shaft body 501, an H-shaped frame 502 is fixedly arranged. Outside the return air chamber pipe 5, a hydraulic cylinder 503 is fixedly arranged. By pushing the H-shaped frame 502 to move through the hydraulic cylinder 503, the moving shaft body 501 drives the piston disc 9 to axially move; on the surface of the main pipeline 6, a connecting branch pipe 601 is arranged. The vacuum pump 8 is communicated with the main pipeline 6 through the connecting branch pipe 601.

[0037] In the vacuum induction furnace of the present invention, when in use as Figure 3 shown in the figure, the raw materials are placed in the crucible 3 for melting, and electromagnetic induction heating is carried out through the electromagnetic induction coil 4. With the infrared temperature sensor arranged in the vacuum furnace chamber 1, accurate temperature control can be achieved during the melting process. Before the vacuum induction furnace conducts melting, a vacuum pumping process is required. At the initial stage of pumping the vacuum furnace chamber 1, the negative pressure suction required for vacuum pumping is not large. At this time, the main valve 7 is controlled to open, and the piston disc 9 moves, so that the return air chamber pipe 5 generates negative pressure suction. At this time, the gas in the vacuum furnace chamber 1 passes through the filter layer 705 and then enters the return air chamber pipe 5 through the main pipeline 6, realizing large-flow pumping in the initial stage; After the piston disc 9 reaches the limit position, the main valve 7 is controlled to close. At this time, supplementary vacuum pumping is carried out through the vacuum pump 8. When the piston disc 9 moves to the right and reaches the limit position, a certain degree of vacuum has been generated in the vacuum furnace chamber 1. Since the piston disc 9 has a larger area and the sealing rubber ring between the piston disc 9 and the return air chamber pipe 5 is also larger, it is difficult to ensure the sealing performance under a higher degree of vacuum. Moreover, the disc area of the piston disc 9 is larger and the atmospheric pressure it bears is also large. At this time, the main valve 7 is controlled to close, and only the vacuum pump 8 is used for supplementary vacuum pumping in the subsequent stage. This can not only shorten the overall time for pumping the vacuum furnace chamber 1, but also will not cause too much pressure on the piston disc 9.

[0038] When the melting and casting inside the vacuum furnace chamber 1 are completed, the top cover 2 is opened to let air in, so that the inside of the vacuum furnace chamber 1 loses the vacuum environment. The main valve 7 is controlled to open, and the piston disc 9 is driven to move leftward to reset, as Figure 4As shown in the figure, when the piston disc 9 moves leftward to reset, a positive pressure air flow will be generated in the reverse flow air chamber pipe 5. The positive pressure air flow enters the main pipeline 6 and blows back and cleans the filter layer 705. Due to the one-way passage of the one-way blocking disc 703, the one-way blocking disc 703 is closed at this time, so that the dust-carrying air flow for back blowing and cleaning enters the dust exhaust reverse flow pipe 706 and the right-angled outer pipe 707; as Figure 5 shown in the figure, the dust-carrying air flow pushes down the air seal block 709 and is discharged outward.

[0039] After the piston disc 9 moves leftward and resets in place, control the atomizing nozzle 715 and the air supply nozzle 716 to work. Spray the combustible medium into the explosion chamber 714 through the atomizing nozzle 715, and input the oxygen-containing gas into the explosion chamber 714 through the air supply nozzle 716, and energize the igniter 717 to ignite. At this time, an explosion occurs in the explosion chamber 714, and the shock wave pressure of the explosion is ejected through the impact air gap 711; as Figure 6 shown in the figure, the impact air gap 711 is located at the upper part of the contact surface between the conical inner wall 708 and the air seal block 709, and the impact air gap 711 jets vertically downward. Under the gas shock wave ejected from the impact air gap 711, the air seal block 709 is impacted and moves downward a small distance, so that a certain gap is separated between the air seal block 709 and the conical inner wall 708. At the same time, the gas shock wave intervenes between the conical inner wall 708 and the air seal block 709, and can blow away the dust remaining between their contact surfaces. When the air seal block 709 moves upward and resets, it can ensure the contact tightness between the air seal block 709 and the conical inner wall 708, and ensure that there is no air leakage between the conical inner wall 708 and the air seal block 709 during the vacuum pumping process.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production method of a ferrous-based superalloy wire, characterized in that, The method comprises the following steps: Step 1, prepare a raw material with Fe as the matrix according to the mass percentage; Step 2, melt the raw material in a vacuum induction furnace, control the temperature at 1500 - 1600 °C, and achieve compositional homogenization through electromagnetic stirring; Step 3, pour the iron-based superalloy melt obtained in Step 2 into an ingot, heat the ingot to 1100 - 1200 °C and keep it warm for 2 - 4 hours, and then roll it into a wire rod with a diameter of Φ20 - 30 mm through hot rolling; Step 4, pickle the wire rod with hydrochloric acid to remove the oxide scale, then wash it with absolute ethanol and dip-coat it with a composite lubricant, and dry it for standby; Step 5, after rough cold drawing and finish cold drawing in sequence, make the wire reach the target diameter; Step 6, perform heat treatment strengthening and then polishing to obtain an iron-based superalloy wire.

2. The production method of the iron-based superalloy wire according to claim 1, characterized in that: In the said Step 1, the proportion of the raw material Fe matrix is greater than or equal to sixty percent; The said raw material further includes: Cr, Ni, Mo, Nb, Ti.

3. The production method of the iron-based superalloy wire according to claim 1, characterized in that: The said vacuum induction furnace includes a vacuum furnace chamber and a top cover which is arranged on the vacuum furnace chamber and can open and close movably. A crucible is arranged inside the vacuum furnace chamber, and the raw material is melted in the crucible. An electromagnetic induction coil is arranged on the surface of the crucible, and the raw material is heated by electromagnetic induction through the electromagnetic induction coil; A reflux gas chamber pipe is arranged outside the vacuum furnace chamber. A main pipe is connected and arranged between the reflux gas chamber pipe and the vacuum furnace chamber. A main valve for controlling the on-off of the main pipe is arranged on the main pipe. A vacuum pump is connected and arranged outside the main pipe. When the main valve is closed, the vacuum pump can still be connected with the vacuum furnace chamber through the main pipe; A piston disk which can move axially is arranged in the reflux gas chamber pipe; in the initial stage of evacuating the vacuum furnace chamber, the piston disk moves in a direction away from the main pipe, and after moving in place, control the main valve to close.

4. The production method of the iron-based superalloy wire according to claim 3, characterized in that: A filter cover is fixedly arranged on the inner wall surface of the vacuum furnace chamber. The filter cover is communicated with the main pipe. A sealing and matching eaves is fixedly arranged in the filter cover. A one-way plug disk is arranged on one side of the sealing and matching eaves. A plug disk support spring piece is arranged on the one-way plug disk. Elastic pressure is applied to the one-way plug disk through the plug disk support spring piece, so that the one-way plug disk is in sealing contact with the sealing and matching eaves; When the gas flows from the vacuum furnace chamber towards the filter cover, the one-way plug disk and the sealing and matching eaves are separated and opened; when the gas flows from the filter cover towards the vacuum furnace chamber, the one-way plug disk and the sealing and matching eaves are pressed close and closed.

5. The production method of the iron-based superalloy wire according to claim 4, characterized in that: A filter layer is further arranged in the filter cover. A dust discharge and reflux pipe is connected and arranged at the lower part of the filter cover. A right-angle outer pipe is arranged outside the vacuum furnace chamber. The lower end of the dust discharge and reflux pipe is communicated with the right-angle outer pipe; A conical inner wall is arranged on the inner wall surface of the right-angle outer pipe. An air seal plug is arranged below the conical inner wall. When the air seal plug moves upward, it can cooperate with the conical inner wall to achieve sealing contact.

6. The production method of the iron-based superalloy wire according to claim 5, characterized in that: A tension spring is arranged above the air seal plug. The tension spring applies elastic tension to the air seal plug, so that the air seal plug has an upward movement tendency.

7. The production method of the iron-based superalloy wire according to claim 6, characterized in that: An impact air gap is provided on the inner wall surface of the conical inner wall. A secondary chamber and an explosion chamber are provided in the right-angle outer tube. A communication air hole is provided for communication between the secondary chamber and the explosion chamber. Both the secondary chamber and the impact air gap are annular and communicate with each other.

8. The production method of the iron-based superalloy wire according to claim 7, characterized in that: An atomizing nozzle, a gas supply nozzle, and an igniter are provided in the explosion chamber. The atomizing nozzle is used to spray a combustible medium into the explosion chamber. The gas supply nozzle is used to spray an oxygen-containing gas into the explosion chamber. The igniter ignites the combustible medium sprayed by the atomizing nozzle, causing an explosion in the explosion chamber. The explosion shock pressure is ejected through the impact air gap and enters between the contact surface of the conical inner wall and the airtight plug.

9. The production method of the iron-based superalloy wire according to claim 3, characterized in that: A power module is provided outside the vacuum furnace chamber. A turning shaft is inserted into the vacuum furnace chamber. The turning shaft is in sealed contact with the vacuum furnace chamber. The turning shaft is fixedly installed with the crucible. The turning shaft is controlled to rotate by the power module, so that the crucible can be turned and moved. A ingot mold is provided in the vacuum furnace chamber.

10. The production method of the iron-based superalloy wire according to claim 3, characterized in that: A moving shaft body is fixedly provided on the surface of the piston disk. An H-shaped frame is fixedly provided at the end of the moving shaft body. A hydraulic cylinder is fixedly provided outside the reflux gas chamber pipe. The H-shaped frame is pushed to move by the hydraulic cylinder, and then the moving shaft body drives the piston disk to axially move. A connecting branch pipe is provided on the surface of the main pipeline. The vacuum pump is communicated with the main pipeline through the connecting branch pipe.

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