Nickel-based alloy annealing device

Abstract

The application belongs to the technical field of nickel-based alloy heat treatment, in particular to a nickel-based alloy annealing device, which comprises an annealing furnace and an annealing tray, the annealing furnace comprises a furnace shell, the top of the furnace shell is provided with a furnace cover, the inner wall of the annealing chamber in the furnace shell is uniformly provided with a heating device; the outer side of the furnace shell is provided with an atmosphere circulation machine body, the furnace cover is provided with a gas outlet cavity, the bottom inner wall of the annealing chamber is provided with a recovery cavity, the gas outlet cavity, the recovery cavity and the circulating fan inside the atmosphere circulation machine body are communicated, realizing the circulating flow of the protective atmosphere; the application circulates the protective atmosphere, so that the heated protective atmosphere contacts and penetrates the gap between the wires downward, taking the protective atmosphere flow penetrating into the wire gap as the medium, better transferring the heat to the wires close to the inner side, so that the wires close to the inner side are sufficiently heated, thereby reducing the temperature difference of the wires at different positions and ensuring the heat treatment quality of the nickel-based alloy wires.

Description

Technical Field

[0001] This invention belongs to the field of nickel-based alloy heat treatment technology, specifically a nickel-based alloy annealing apparatus. Background Technology

[0002] Nickel-based alloys are a class of alloys that possess high strength and certain resistance to oxidation and corrosion at high temperatures of 650–1000℃. Based on their main properties, they are further subdivided into nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys, and nickel-based shape memory alloys. High-temperature alloys are classified according to their matrix: iron-based high-temperature alloys, nickel-based high-temperature alloys, and cobalt-based high-temperature alloys. Nickel-based high-temperature alloys are simply referred to as nickel-based alloys.

[0003] Nickel-based alloy wires, containing a high proportion of elements such as Ni, Cr, and Mo, have excellent high-temperature strength and corrosion resistance. However, they are prone to work hardening (dislocation accumulation and internal stress concentration) during processing and need to be annealed in a pit-type annealing furnace to restore plasticity, refine the microstructure, and eliminate internal stress.

[0004] In this process, in order to reduce volume, the wire is usually wound into a coil or placed on a spool and then placed inside the annealing furnace for heat treatment. During this process, the inner part of the coiled wire is far from the heating position, and the wires are mutually shielded and do not easily come into contact with the protective atmosphere, resulting in limited heating and uneven overall temperature of the wire, which affects the heat treatment effect. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a nickel-based alloy annealing apparatus.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention proposes a nickel-based alloy annealing device, including an annealing furnace and an annealing tray. The annealing furnace includes a furnace shell, a furnace cover is provided on the top of the furnace shell, and heating devices are uniformly arranged on the inner wall of the annealing chamber inside the furnace shell.

[0007] An atmosphere circulation unit is installed on the outside of the furnace shell, an exhaust chamber is installed on the furnace cover, and a recovery chamber is installed on the bottom inner wall of the annealing chamber. The exhaust chamber, the recovery chamber and the circulating fan inside the atmosphere circulation unit are connected to achieve the circulation of the protective atmosphere.

[0008] The annealing tray includes fixed discs on the upper and lower sides and a fixed shaft in the middle. The nickel-based alloy wire to be processed is fixedly wound on the outer surface of the fixed shaft.

[0009] The middle part of the annealing chamber is fixedly provided with a mounting shaft, the mounting shaft passes through the fixing hole in the middle of the fixing disc and limits and fixes the annealing tray; the mounting shaft is a tubular structure, the top of the mounting shaft is communicated with the gas outlet cavity, and the part of the mounting shaft inside the fixing shaft is uniformly provided with a gas guide hole, the fixing disc is uniformly provided with a flow guide hole, and the side wall of the fixing shaft is uniformly provided with a through hole;

[0010] The limiting tube is provided at the opening of the through hole, extends transversely and passes through the gap between the winding wires outside the fixing shaft, the side wall of the limiting tube is uniformly provided with a dispersion hole, and the limiting tube is communicated with the internal area of the fixing shaft.

[0011] Preferably, the middle part of the fixing disc close to the upper side of the annealing tray is provided with an opening and communicated with the hollow part inside the fixing shaft, and the middle part of the fixing disc close to the lower side is kept closed and in sliding contact with the mounting shaft.

[0012] Preferably, the outer surface of the fixing disc close to the upper side of the annealing tray is provided with a gas guide ring, the outer edge end of the gas guide ring extends horizontally and close to the inner wall of the annealing chamber.

[0013] Preferably, the limiting tube is a conical tube structure, the side end close to the fixing shaft of the limiting tube is a large end, the outer surface of the limiting tube is uniformly provided with an annular protrusion, and the dispersion holes are concentratedly distributed on the surface of the annular protrusion.

[0014] Preferably, the limiting tube is a conical tube structure, the side end close to the fixing shaft of the limiting tube is a large end, the outer surface of the limiting tube is uniformly provided with an annular protrusion, and the dispersion holes are concentratedly distributed on the surface of the annular protrusion.

[0015] Preferably, the limiting tube is a conical tube structure, the side end close to the fixing shaft of the limiting tube is a large end, the outer surface of the limiting tube is uniformly provided with an annular protrusion, and the dispersion holes are concentratedly distributed on the surface of the annular protrusion.

[0016] Preferably, the limiting tube is a conical tube structure, the side end close to the fixing shaft of the limiting tube is a large end, the outer surface of the limiting tube is uniformly provided with an annular protrusion, and the dispersion holes are concentratedly distributed on the surface of the annular protrusion.

[0017] The beneficial effects of the present application are as follows:

[0018] The nickel-based alloy annealing device provided by the present application can send the protective atmosphere at a fixed time, the heating element can be arranged on the inner wall of the gas outlet cavity, the protective atmosphere is heated before being released downward to flush the wire in the annealing chamber, the heated protective atmosphere contacts and penetrates the gap between the wires downward, the protective atmosphere flow penetrating into the gap between the wires is used as a medium to better transfer heat to the wire close to the inner side, the wire close to the inner side is sufficiently heated, the temperature difference between the wires at different positions is reduced, and the heat treatment quality of the nickel-based alloy wire is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below with reference to the drawings. The beneficial effects of the present application are as follows:

[0020] Figure 1 is a perspective view of the present application;

[0021] Figure 2 is a sectional view of the present application;

[0022] Figure 3 is a perspective view of the annealing tray in the present application;

[0023] Figure 4 is a sectional view of the annealing tray in the present application;

[0024] Figure 5 is Figure 4 is an enlarged view of part A in the figure;

[0025] Figure 6 is a sectional view of the layered rod in the present application.

[0026] In the figure: annealing furnace 1, furnace shell 11, furnace cover 12, air outlet cavity 121, annealing chamber 13, recovery cavity 131, mounting shaft 14, air guide hole 141, annealing tray 2, fixed disc 21, fixed hole 211, flow guide hole 212, fixed shaft 22, through hole 221, air guide ring 23, limiting tube 24, dispersion hole 241, annular protrusion 242, layered rod 25, annular groove 251, transmission hole 252. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Embodiment one:

[0029] As shown in the drawings Figures 1-6 in the specification, the present application proposes a nickel-based alloy annealing device, which comprises an annealing furnace 1 and an annealing tray 2. The wire made of nickel-based alloy material to be treated is fixed on the outer surface of the annealing tray 2 and receives annealing treatment in the annealing furnace 1. The annealing furnace 1 comprises a furnace shell 11, the top of which is provided with a furnace cover 12. The inner wall of the annealing chamber 13 in the furnace shell 11 is uniformly provided with a heating device. The outer side of the furnace shell 11 is a metal structure, which plays a supporting and fixing role. The inner side is provided with a heat preservation layer to prevent the internal heat from being transferred outward. The heating device is controlled by an existing intelligent temperature control system. The resistance wire as a heating element penetrates the inner wall of the heat preservation layer and surrounds the middle annealing chamber 13. It is started under the control of the external temperature control system and the temperature change is monitored in real time by a temperature sensor and corresponding adjustment is made.

[0030] The atmosphere circulation machine body is arranged outside the furnace shell 11, the gas outlet cavity 121 is arranged on the furnace cover 12, the recovery cavity 131 is arranged on the inner wall of the bottom of the annealing chamber 13, the gas outlet cavity 121 and the recovery cavity 131 are communicated with the inside of the annealing chamber 13 respectively, the gas outlet cavity 121, the recovery cavity 131 and the circulating fan inside the atmosphere circulation machine body are communicated, the circulation flow of the protective atmosphere is realized, and in the atmosphere circulation machine body, the filter and the deoxidizer and other purification devices are arranged at the combined parts of the air inlet end of the circulating fan and the recovery cavity 131 respectively, for filtering and separating the impurities contained in the recovered protective atmosphere gas and the possible residual oxygen, avoiding the impurities from contacting the wire rod in the annealing process again, and affecting the surface quality of the wire rod;

[0031] The annealing material disc 2 includes the fixed discs 21 on the upper side and the lower side and the fixed shaft 22 in the middle, which are all made of carbon steel, and the fixed shaft 22 is hollow in the inside to form a cylindrical structure; the wire rod is wound on the outer surface of the fixed shaft 22, and the mounting shaft 14 is arranged at the middle part of the annealing chamber 13, penetrates through the fixed hole 211 in the middle of the fixed disc and limits and fixes the annealing material disc 2; the mounting shaft 14 is in a tubular structure, the top of the mounting shaft 14 is communicated with the gas outlet cavity 121, the parts of the mounting shaft 14 inside the fixed shaft 22 are uniformly provided with the air guide holes 141, the fixed discs 21 are uniformly provided with the flow guide holes 212, and the side walls of the fixed shaft 22 are uniformly provided with the through holes 221; the furnace cover 12 is started and opened through the driving structure arranged outside the furnace shell 11, the driving structure includes the motor and the telescopic equipment, drives the horizontal rotation and the vertical movement of the furnace cover 12; when it is needed to be closed, the driving structure drives the furnace cover 12 to rotate to the upper side of the top opening of the furnace shell 11, and then vertically moves downward, closes the top opening of the furnace shell 11, and makes the bottom of the furnace cover 12 combined with the mounting shaft 14, and the top of the mounting shaft 14 is slidably embedded into the gas outlet cavity 121, to realize the communication.

[0032] Specific working process: for the nickel-based alloy wire rod, the problems of the possible accumulation of crystal structure dislocation and the concentration of internal stress in the processing process can be treated through the annealing processing, mainly by putting it into the annealing furnace 1, through the recrystallization annealing, the plasticity of the wire rod is recovered, the internal organization is refined, the internal stress is eliminated, and the mechanical properties of the wire rod are improved;

[0033] Specifically, first, the wire is pretreated, and the oxide scale, oil stains and other impurities that may adhere to the surface of the wire are removed by pickling and other treatment methods. Then the treated wire is wound on the fixed shaft 22 of the annealing tray 2 to form a coil-like structure stacked on each other. Then the annealing tray 2 is lifted by the hoisting equipment, so that the end of the mounting shaft 14 inside the annealing chamber 13 is aligned with the fixed hole 211 in the middle of the annealing tray 2. In this way, the annealing tray 2 drives the wire into the annealing chamber 13, and the fixed hole 211 and the mounting shaft 14 slide relative to each other, ensuring that the annealing tray 2 enters or exits the annealing chamber 13 along a stable movement trajectory, avoiding damage to the annealing tray 2 and the wire during loading and unloading.

[0034] According to the relative height of the annealing chamber 13 and the annealing tray 2, a plurality of annealing trays 2 can be sequentially fed into the annealing chamber 13 and stacked vertically along the mounting shaft 14. Then the furnace cover 12 is closed, so that the bottom of the furnace cover 12 is combined with the top of the mounting shaft 14, limiting the fixed shaft 22 and the annealing tray 2 and wire nested on the fixed shaft 22. Start the circulating fan to extract the air inside the annealing chamber 13, and introduce protective gas to form a protective atmosphere, replacing the air containing oxygen and moisture inside the annealing chamber 13, so that the wire can be annealed in the environment surrounded by the protective atmosphere.

[0035] Start the heating device in the inner wall of the annealing chamber 13 to raise the temperature inside the annealing chamber 13 and heat the wire, so that the wire transitions from low temperature to high temperature. Slow heating can avoid heat stress concentration and ensure uniform transformation of the wire internal organization. After heating to the predetermined temperature, stop heating and keep warm for a period of time. The specific warm-up time is determined according to the diameter of the wire. During the warm-up stage, the wire inside is recrystallized and the uniform grains are refined. After the warm-up is completed, the slow cooling stage begins. To avoid rapid cooling causing deformation and cracking of the wire due to cooling stress, the heating device can be turned off to allow the annealing chamber 13 to cool naturally, extending the cooling time to ensure the heat treatment quality of the wire. Finally, after complete cooling, the furnace cover 12 is opened to lift the annealing tray 2, and the quality of the wire wound therein is detected to determine whether it is qualified.

[0036] In the above process, because the wires are stacked by winding each other on the fixed shaft 22, the wires close to the inner side of the fixed shaft 22 can be insufficiently heated due to multiple shielding, resulting in uneven temperature on the wires; therefore, the application can send the protective atmosphere at regular intervals, and the heating element can also be arranged on the inner wall of the outlet cavity 121, so as to heat the protective atmosphere flowing into the protective atmosphere and then release it downward to flush the wires inside the annealing chamber 13; in this way, the heated protective atmosphere contacts and penetrates the gap between the wires downward, and the protective atmosphere flowing into the gap between the wires serves as a medium to better transfer heat to the wires close to the inner side, so that the wires close to the inner side are sufficiently heated, thereby reducing the temperature difference between the wires at different positions;

[0037] Further, in order to improve the diffusion efficiency of the protective atmosphere, the outlet cavity 121 and the recovery cavity 131 are arranged on the upper and lower sides of the annealing chamber 13 respectively, and the protective atmosphere flowing out of the outlet cavity 121 is sucked into the recovery cavity 131, so that the protective atmosphere flows vertically inside the annealing chamber 13 and fully covers the wires in the middle; and because the fixed shaft 22 is hollow, part of the airflow flows downward along the tubular structure of the mounting shaft 14, and flows out of the air guide hole 141 corresponding to the inner region of the fixed shaft 22 into the inner region of the fixed shaft 22, so that the air pressure in the inner region of the fixed shaft 22 increases and the temperature rises, heating the wires close to the inner side; at the same time, the protective atmosphere flows out of the through hole 221 of the side wall of the fixed shaft 22 and contacts the part close to the inner side of the wires wound on the fixed shaft 22, and the airflow of the protective atmosphere penetrates and flows from the inside to the outside along the gap between the wires, while transferring heat to the contacted wires, so that the wires close to the inner side are heated and warmed up, promoting them to approach the temperature of the wires on the outer side, further reducing the temperature difference between the wires at different positions, thereby improving the overall heat treatment quality of the wires and further reducing the problem of deformation and cracking of the wires due to uneven heating;

[0038] Similarly, during the subsequent holding stage, the protective atmosphere can also be continuously released downward, and the temperature of the heating element inside the outlet cavity 121 can be gradually reduced, so that the holding atmosphere in sufficient contact with the wires passes through each part of the wires under the condition of gradually reducing the temperature, reducing the temperature difference between each part of the wires, and promoting the wires to realize slow cooling under the condition of uniform temperature distribution on the whole, thereby ensuring the heat treatment quality of the wires;

[0039] Further, the through hole 221 is fixedly provided with a limiting tube 24, which can be detachably connected through a connecting member such as a fixing bolt, the limiting tube 24 extends transversely and passes through the gap between the wire coils outside the fixing shaft 22, and the side wall of the limiting tube 24 is uniformly provided with a plurality of dispersion holes 241, the limiting tube 24 is in communication with the inner region of the fixing shaft 22; and the through hole 221 in which the limiting tube 24 is arranged only occupies half of the number of the through holes 221, in order to facilitate the uniform distribution of the limiting tubes 24, the through holes 221 in which the limiting tubes 24 are arranged and the through holes 221 in which the limiting tubes 24 are not arranged can be arranged in an interlaced manner;

[0040] The limiting tube 24 is arranged on the outer surface of the side wall of the fixing shaft 22, so that when the wire coil is wound, the wire coil needs to be adjusted to pass through the limiting tube 24, so that the limiting tube 24 enlarges the gap of the wire coil in the vertical direction, facilitates the penetration of the protective atmosphere flowing from the inside to the outside through the gap of the wire coil, and enlarges the contact surface of the wire coil and the protective atmosphere; further, because the limiting tube 24 is in communication with the corresponding through hole 221, part of the airflow flows into the limiting tube 24 along the through hole 221, and then flows out from the dispersion holes 241 uniformly arranged on the side wall of the limiting tube 24, so that the protective atmosphere maintains the kinetic energy of the airflow by means of the flow channel in the limiting tube 24, so that the airflow flowing out from the dispersion holes 241 can contact and impact the wire coil attached to the outer surface of the limiting tube 24 at the same time, penetrate more deeply into the gap of the wire coil, realize efficient heat transfer and penetration, and make the wire coil as a whole keep uniform heating.

[0041] Embodiment two:

[0042] On the basis of embodiment one, the middle part of the fixing disc 21 close to the upper side of the annealing tray 2 is provided with an opening and is in communication with the hollow part inside the fixing shaft 22, and the middle part of the fixing disc 21 close to the lower side is kept closed and is in sliding contact with the mounting shaft 14; and for the vertically stacked annealing trays 2, except for the uppermost annealing tray 2, the upper side of the fixing disc 21 on the top of the lower annealing tray 2 is provided with a supporting plate, which lifts the upper annealing tray 2, so that the joint part between the vertically stacked annealing trays 2 keeps a gap;

[0043] The outer surface of the fixing disc 21 close to the upper side of the annealing tray 2 is provided with a gas guide ring 23, the outer edge end of the gas guide ring 23 extends horizontally and is close to the inner wall of the annealing chamber 13, and a heat insulation ring is arranged at the joint part between the gas guide ring 23 and the fixing disc 21, which is made of high-temperature-resistant materials such as asbestos or stone materials, so as to prevent heat from being transferred to the connected fixing disc 21, avoid the temperature of the fixing disc 21 being too high to cause the temperature of the contacted wire coil to be too large, and affect the heat treatment quality;

[0044] Specific working process: on the basis of the specific working process in embodiment one, in the process of releasing the protective atmosphere, when the downward flowing gas flow contacts the uppermost annealing tray 2, it is first intercepted by the outer gas guide ring 23 of the upper fixed disc 21, so that the vertical flow of the gas flow is blocked and the horizontal flow is strengthened, then it flows into the hollow area inside the fixed shaft 22 through the middle opening of the upper fixed disc 21, then because the lower fixed disc 21 remains closed, the gas flow can only flow out laterally from the through hole 221 in the horizontal direction, horizontally flushing the outer wound wire, achieving full contact and heat transfer, eliminating the contact dead angle of the protective atmosphere, and reducing the temperature difference of the wire in different parts; then the gas flow continues to flow downward, passes through the gap lifted by the support plate, and flows into the upper opening of the lower annealing tray 2, repeating the above process, so that the vertical flow path and the horizontal flow path of the protective atmosphere are combined, achieving full contact with the wire and improving the utilization efficiency of the protective atmosphere.

[0045] Embodiment three:

[0046] On the basis of embodiment two, the limiting tube 24 is a tapered tube, and the side end of the limiting tube 24 close to the fixed shaft 22 is a large end, and the outer surface of the limiting tube 24 is uniformly provided with an annular protrusion 242, and the dispersion holes 241 are concentratedly distributed on the surface of the annular protrusion 242;

[0047] Specific working process: on the basis of the specific working process in embodiment two, the limiting tube 24 is a tapered tube structure, so that the contact surface between the tapered outer surface of the limiting tube 24 and the outer wound wire is increased, and the uniform annular protrusion 242 on the surface of the limiting tube 24 can be embedded into the wire during the winding process, so that on the one hand, the relative friction between the limiting tube 24 and the wire is increased, so that the wire remains stable during the annealing heat treatment process; on the other hand, the part where the annular protrusion 242 is embedded into the gap inside the wire releases the heated gas flow through the dispersion holes 241 on the surface, the gas flow increases in speed in the internal tapered area, improves the impact of the outflowing gas flow, and makes the gas flow further penetrate into the gap inside the wire, heats the internal wire part, and promotes the uniform distribution of the overall temperature of the wire.

[0048] Embodiment four:

[0049] On the basis of embodiment three, a layered rod 25 is arranged between adjacent limiting tubes 24, and the layered rod 25 is vertically arranged and uniformly arranged along the horizontal direction; in order to facilitate disassembly, the limiting tube 24 can be composed of multiple segments, and is connected to each other through fixed bolt pieces, and the connection part can be located close to the position of the annular protrusion 242, so as to facilitate the winding and separation of the wire;

[0050] Specific workflow: on the basis of the specific workflow in embodiment three, set the detachable between the layered rod 25 and the limiting tube 24, before the wire winding, all the layered rod 25 is disassembled, according to the winding thickness of the wire, it can be divided into three to five layers; The layered rod 25 closest to the fixed shaft 22 is installed when the measured thickness reaches the layered thickness during the wire winding process, and then the wire winds around the layered rod 25 to form the second layer, and the installed layered rod 25 can be used as the separation layer between the first layer and the second layer; Then the subsequent layered rod 25 is installed when the second layer of winding wire reaches the predetermined thickness, and the above operation is repeated; It can ensure that more wires are wound on the annealing tray 2, while ensuring that the gap of the wire in the horizontal direction is expanded by separating the wound wire into several layers through the layered rod 25;

[0051] Further, the layered rod 25 is a tubular structure and the end part communicates with the dispersion hole 241 of the side wall of the limiting tube 24, the outer surface of the layered rod 25 is uniformly provided with an annular groove 251, and the inner wall of the annular groove 251 is uniformly provided with a transmission hole 252, which communicates with the inner region of the layered rod 25;

[0052] As the protective atmosphere flows into the limiting tube 24, because the layered rod 25 communicates with the inside of the limiting tube 24, part of the protective atmosphere penetrates into the hollow region of the layered rod 25, and then flows out from the transmission hole 252 on the inner wall of the annular groove 251 provided on the side wall of the layered rod 25; Because the opening part of the annular groove 251 has a smaller spacing than the diameter of the wire, the wire is intercepted outside the annular groove 251, and the annular groove 251 expands the gap between the wire and the layered rod 25, so that the airflow flowing out of the transmission hole 252 on the inner wall of the annular groove 251 first fills the annular groove 251 and then diffuses outward, fully contacting the wire wound around the layered rod 25, further eliminating the covered dead angle of the protective atmosphere, and timely removing the oxide skin and other impurities that may be generated on the surface of the wire during the heat treatment process, so that they are separated from the wire under the scouring of the airflow and are recovered by the recovery cavity 131 with the downward flowing airflow, ensuring the processing quality of the wire.

[0053] Embodiment five:

[0054] On the basis of embodiment four, the section of the layered rod 25 between the two limiting tubes 24 is elliptical, and the section of the two ends of the layered rod 25 is circular and embedded in the corresponding dispersion hole 241 of the limiting tube 24, and the end of the layered rod 25 is rotatably connected with the dispersion hole 241; And the dispersion hole 241 is a tapered hole, and the center axis of the dispersion hole 241 deviates from the center of the elliptical section of the dispersion rod;

[0055] Specific work flow: on the basis of the specific work flow in embodiment four, as part of the protective atmosphere flows from the inside of the limiting tube 24 into the inside of the dispersion rod, and then flows out from the dispersion hole 241 of the side wall of the dispersion rod, the backwash effect of the airflow acts on the dispersion rod, making the dispersion hole 241 have a rotating tendency; when the dispersion rod rotates in the gap between the wires, because the cross section is oval, it will squeeze the wires on both sides, so that the wire gap corresponding to the dispersion rod increases, so that the airflow flowing out of the dispersion hole 241 flows out of the enlarged gap, expands the range of action, improves the effect of the protective atmosphere on heat transfer and balances the temperature of different parts of the wire, and ensures the heat treatment quality of the wire.

[0056] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A nickel-based alloy annealing apparatus comprising an annealing furnace (1) and an annealing tray (2), characterized in that: The annealing furnace (1) comprises a furnace shell (11), a furnace cover (12) is arranged on the top of the furnace shell (11), and heating devices are uniformly arranged on the inner wall of an annealing chamber (13) in the furnace shell (11); An atmosphere circulating machine body is arranged on the outer side of the furnace shell (11), an air outlet cavity (121) is arranged on the furnace cover (12), and a recovery cavity (131) is arranged on the inner wall of the bottom of the annealing chamber (13); the air outlet cavity (121) and the recovery cavity (131) are respectively communicated with the inside of the annealing chamber (13), the air outlet cavity (121) and the recovery cavity (131) are communicated with a circulating fan in the atmosphere circulating machine body, and the circulation of the protective atmosphere is realized. The annealing material disc (2) comprises upper and lower fixed discs (21) and a fixed shaft (22) in the middle, and the wire rod of the nickel-based alloy material to be treated is fixedly wound on the outer surface of the fixed shaft (22). An installation shaft (14) is fixedly arranged at the middle part of the annealing chamber (13), the installation shaft (14) penetrates through the fixed hole (211) in the middle of the fixed disc (21) and limits and fixes the annealing material disc (2); the installation shaft (14) is in a tubular structure, the top of the installation shaft (14) is communicated with the air outlet cavity (121), and the part of the installation shaft (14) located in the inside of the fixed shaft (22) is uniformly provided with a gas guide hole (141); the fixed disc (21) is uniformly provided with a flow guide hole (212), and the side wall of the fixed shaft (22) is uniformly provided with a through hole (221). A limiting tube (24) is arranged at the opening of the through hole (221), the limiting tube (24) extends transversely and penetrates through the gap between the wound wire rods on the outer side of the fixed shaft (22), the side wall of the limiting tube (24) is uniformly provided with a dispersion hole (241), and the limiting tube (24) is communicated with the internal region of the fixed shaft (22).

2. The nickel-based alloy annealing apparatus of claim 1, wherein: The middle part of the fixed disc (21) close to the upper side of the annealing material disc (2) is provided with an opening and communicated with the hollow part in the inside of the fixed shaft (22), and the middle part of the fixed disc (21) close to the lower side is kept closed and in sliding contact with the installation shaft (14).

3. The nickel-based alloy annealing apparatus of claim 2, wherein: The outer surface of the fixed disc (21) close to the upper side of the annealing material disc (2) is provided with a gas guide ring (23), and the outer edge end of the gas guide ring (23) extends horizontally and close to the inner wall of the annealing chamber (13).

4. The nickel-based alloy annealing apparatus of claim 1, wherein: The limiting tube (24) is in a conical tube structure, one side end of the limiting tube (24) close to the fixed shaft (22) is a large end, the outer surface of the limiting tube (24) is uniformly provided with an annular protrusion (242), and the dispersion holes (241) are concentratedly distributed on the surface of the annular protrusion (242).

5. The nickel-based alloy annealing apparatus of claim 4, wherein: Layered rods (25) are arranged between adjacent limiting tubes (24), the layered rods (25) are vertically arranged and annularly arranged around the central shaft of the fixed shaft (22).

6. The nickel-based alloy annealing apparatus of claim 5, wherein: The layered rod (25) is in a tubular structure and communicated with the inside of the limiting tube (24), the outer surface of the layered rod (25) is uniformly provided with an annular groove (251), the inner wall of the annular groove (251) is uniformly provided with a transmission hole (252), and the transmission hole (252) is communicated with the internal region of the layered rod (25).

7. The nickel-based alloy annealing device of claim 6, wherein: The layered rod (25) is rotatably connected with the limiting tube (24), and the cross section of the layered rod (25) is in an elliptical shape.

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