Nickel alloy bar heat treatment device and bar heat treatment process

Abstract

The invention relates to the technical field of heat treatment, in particular to a nickel alloy bar heat treatment device and a bar heat treatment technology.The nickel alloy bar heat treatment device comprises a furnace body and a tool assembly arranged at the bottom of an inner cavity of the furnace body, the upper half portion of the furnace body is a heating cavity, and the lower half portion of the furnace body is an annealing cavity; the tool assembly comprises a tool cylinder inserted in the annealing cavity, a carrier plate capable of sliding up and down is arranged in the tool cylinder, a supporting spring is connected to the bottom surface of the carrier plate and the cavity bottom of the tool cylinder, a motion space is formed between the carrier plate and the cavity bottom of the tool cylinder, an assembling hole is formed in the middle of the carrier plate, and the supporting spring is arranged in the assembling hole. A rotating shaft is installed in the assembly hole, a friction sleeve is fixed to the rotating shaft, heating, annealing and oxide skin falling work are completed, the surface brightness of the nickel alloy bar is high, if the nickel alloy bar is a final machined product, the product quality is high, the surface does not need to be polished again, and the finished product efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment, and in particular to a nickel alloy bar heat treatment device and a bar heat treatment process. Background Art

[0002] Nickel alloy bars are alloy bars made of nickel and other elements. In order to improve their performance, they are cut according to the drawings and put into a hot furnace for high-temperature heating, and then annealed in the hot furnace. It is well known that when metal materials are heated at high temperatures, if oxygen enters the furnace, a layer of oxide scale will form on their surface. After annealing, the surface color will turn black. If the surface is not processed for a second time, it will affect its quality, especially the machined bars. After the heat treatment changes their performance, they cannot be processed again. The oxide scale formed on their outer surface turns black, affecting their product quality, and grinding in a different place will affect efficiency. Summary of the invention

[0003] In order to solve the above problems, the present invention provides the following technical solutions: A nickel alloy bar heat treatment device comprises a furnace body and a tooling assembly arranged at the bottom of the inner cavity of the furnace body, the upper half of the furnace body is a heating cavity, and the lower half is an annealing cavity; the tooling assembly comprises a tooling cylinder inserted into the annealing cavity, the bottom end of the tooling cylinder is closed and the top end is open, a carrier plate capable of sliding up and down is arranged in the tooling cylinder, the bottom surface of the carrier plate and the cavity bottom of the tooling cylinder are connected with a support spring, and under the support of the support spring, a movement space is formed between the carrier plate and the cavity bottom of the tooling cylinder, an assembly hole is opened in the middle of the carrier plate, a rotating shaft is installed in the assembly hole, a friction sleeve is fixed on the rotating shaft, the bottom end of the rotating shaft passes through the bottom surface of the carrier plate and extends into the movement space, and the friction sleeve A rotating space is formed between the tooling barrel and the cavity wall, and a plurality of nickel alloy rods are erected in a circular array in the rotating space. When the carrier plate rises, the nickel alloy rods are pushed into the heating cavity; the tooling assembly also includes a motor fixed in the movement space, and the motor is located on the bottom side of the carrier plate. When the carrier plate is raised or lowered, the bottom end of the rotating shaft is clutched and connected with the top end of the motor. When the carrier plate rises, the bottom end of the rotating shaft is separated from the top end of the motor. When the carrier plate descends, the bottom end of the rotating shaft is connected with the top end of the motor. A plurality of swing holes are opened in a circular array on the tooling barrel, and a jack is opened on the top of the furnace body and is on the same vertical line as the axis of the tooling barrel.

[0004] As a further preferred embodiment, a clamping cavity is opened in the structural wall of the heating chamber, the bottom end of the clamping cavity is above the annealing chamber, a heating tube is arranged in the clamping cavity, the clamping cavity surrounds the periphery of the furnace cavity, and the furnace wall of the heating chamber is opened with a plurality of heating holes communicating with the clamping cavity.

[0005] As a further preferred embodiment, a foot is fixed to the bottom of the furnace body, a material-dropping space is formed between the periphery of the tooling tube and the cavity wall of the annealing cavity, and a row of holes communicating with the cavity bottom of the annealing cavity are provided at the bottom of the furnace body.

[0006] As a further preferred embodiment, positioning sleeves are provided at the upper and lower ends of the tooling cylinder, the outer surfaces of the positioning sleeves are slidably fitted on the cavity wall of the furnace body, and the positioning sleeves at the bottom are provided with a chamfered surface that gradually slopes downward from the top surface.

[0007] As a further preference, a rotating plate is provided on the top surface of the carrier plate, a sleeve hole is opened in the middle of the rotating plate, a bearing is embedded in the sleeve hole, and the bottom end of the rotating shaft passes through the bearing downward and extends into the movement space.

[0008] As a further preferred embodiment, a square block is fixed to the cavity bottom of the furnace body, an anti-rotation seat is fixed to the bottom surface of the tooling cylinder, a square opening is opened on the anti-rotation seat, and the anti-rotation seat is clamped on the square block through the square opening.

[0009] As a further preferred embodiment, a plurality of first friction rails are provided in a circular array on the cavity wall of the tooling cylinder, and a plurality of second friction rails are provided on the outer wall of the friction sleeve. When the rotating shaft rotates, the nickel alloy rod is rotated in the rotating space by friction between the second friction rails and the first friction rails.

[0010] The present invention provides a heat treatment process for a nickel alloy bar, comprising the following process steps: Step S01, heating the nickel alloy rod at high temperature in the heating chamber to improve its performance; Step S02, returning the nickel alloy rod after high temperature heating to the annealing chamber for cooling and annealing; Step S03, while high-temperature annealing, the motor drives the tooling barrel to rotate, and the tooling barrel drives the nickel alloy rod to rotate and rub, so that the oxide scale on the nickel alloy rod automatically falls off, and the nickel alloy rod is returned upward to the heating chamber, the heating chamber is powered off and cooled, and finally the furnace door is opened to take out the nickel alloy rod, and the work is completed.

[0011] Compared with the prior art, the present invention has the following beneficial effects: A heating chamber is arranged above the hot furnace, and an annealing chamber is arranged below the hot furnace. The two chambers are connected up and down, and a carrier plate is arranged between the two chambers. After the nickel alloy rod is sent to the heating chamber for heating via the carrier plate, it can be quickly returned to the annealing chamber for rapid annealing. The motor shaft rotates with the rotating shaft, and the rotating shaft rotates with the friction sleeve. The nickel alloy rod is in the rotating space between the friction sleeve and the wall of the annealing chamber. When the friction sleeve rotates, the second friction rail on the outside is used to rub the outer cylindrical surface of the nickel alloy rod, and the nickel alloy rods rotate in the rotating space by friction. At the same time, when the outer cylindrical surface of the nickel alloy rod touches the first friction rail on the wall of the annealing chamber, it is equivalent to further rubbing the outer cylindrical surface of the nickel alloy rod by the first friction rail, so that the oxide scale on the nickel alloy rod falls off downwards. In addition, these nickel alloy rods rotate centrifugally in the rotating space, so that the oxide scale falls off through the swing hole to the positioning sleeve at the bottom, and is discharged into the row hole through the chamfered surface on the bottom positioning sleeve, and then falls outward from the row hole. At the same time, as the heating environment slowly cools down, these nickel alloy bars complete annealing. Therefore, these nickel alloy bars will be rotated by friction during annealing, which improves the annealing efficiency. After the annealing work is completed, the support spring releases its length, and the carrier pushes the nickel alloy bars to reset and rise into the heating chamber. At this time, the heating chamber has been powered off and cooled. The furnace door is opened to take out the nickel alloy bars, and the heating, annealing and oxide scale shedding work are completed. The surface brightness of the nickel alloy bars is high. If the nickel alloy bars are the final machined products, their product quality is high, and the surface does not need to be polished again by off-site equipment, which improves the efficiency of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the external structure of a nickel alloy bar heat treatment device provided in an embodiment of the present invention; Figure 2 A schematic diagram of a main plan view of a nickel alloy bar heat treatment device after being cut apart provided by an embodiment of the present invention; Figure 3 A nickel alloy bar heat treatment device provided in an embodiment of the present invention comprises Figure 1 A schematic diagram from another perspective; Figure 4 A schematic diagram of an annealing chamber in a nickel alloy bar heat treatment device provided in an embodiment of the present invention from a top view; Figure 5 A working principle diagram of a nickel alloy bar heat treatment device provided in an embodiment of the present invention, in which a plurality of nickel alloy bars are placed in a rotating space; Figure 6 A nickel alloy bar heat treatment device provided in an embodiment of the present invention comprises Figure 4 The schematic diagram after the section is drawn; Figure 7A schematic diagram of the bottom perspective of only the tooling barrel in a nickel alloy bar heat treatment device provided by an embodiment of the present invention and its matching relationship with an anti-rotation seat.

[0013] In the figure: 1. furnace body; 101. heating chamber; 102. annealing chamber; 2. tooling assembly; 4. clamping chamber; 5. heating tube; 6. heating hole; 7. tooling cylinder; 8. carrier plate; 9. support spring; 10. movement space; 11. rotating shaft; 12. friction sleeve; 13. rotating space; 14. motor; 15. jack; 16. swing hole; 17. bottom foot; 18. blanking space; 19. row hole; 20. positioning sleeve; 21. chamfered surface; 22. rotating plate; 23. sleeve hole; 24. square block; 25. anti-rotation seat; 26. square mouth; 27. first friction rail; 28. second friction rail. DETAILED DESCRIPTION

[0014] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0015] In one embodiment, Figure 1-Figure 7 As shown: This embodiment provides a nickel alloy bar heat treatment device, including a furnace body 1 and a tooling assembly 2 arranged at the bottom of the inner cavity of the furnace body 1, the upper half of the furnace body 1 is a heating chamber 101, and the lower half is an annealing chamber 102; The tooling assembly 2 includes a tooling barrel 7 inserted into the annealing chamber 102, the bottom end of the tooling barrel 7 is closed and the top end is open, a carrier plate 8 capable of sliding up and down is arranged in the tooling barrel 7, the bottom surface of the carrier plate 8 and the cavity bottom of the tooling barrel 7 are connected with a support spring 9, under the support of the support spring 9, a movement space 10 is formed between the carrier plate 8 and the cavity bottom of the tooling barrel 7, an assembly hole is opened in the middle of the carrier plate 8, a rotating shaft 11 is installed in the assembly hole, a friction sleeve 12 is fixed on the rotating shaft 11, and the bottom end of the rotating shaft 11 passes through the bottom surface of the carrier plate 8 and extends into the movement space 10, a rotating space 13 is formed between the friction sleeve 12 and the cavity wall of the tooling cylinder 7, and a plurality of nickel alloy rods are arranged in a ring array and erected in the rotating space 13. When the carrier plate 8 rises, the nickel alloy rods are pushed into the heating chamber 101; during high-temperature heating, the support spring 9 is used to push the carrier plate 8 up, and the nickel alloy rods are dragged into the heating chamber 101 by the carrier plate 8; a third-party tool is used to push the rotating shaft 11 down, and the rotating shaft 11 brings the carrier plate 8 down, and the carrier plate 8 brings the nickel alloy rods back to the annealing chamber 102 to complete annealing.

[0016] The tooling assembly 2 also includes a motor 14 fixed in the motion space 10. The motor 14 is located at the bottom side of the carrier plate 8. When the carrier plate 8 is raised or lowered, the bottom end of the rotating shaft 11 is connected to the top of the motor 14 by a clutch. When the carrier plate 8 rises, the bottom end of the rotating shaft 11 is separated from the top of the motor 14. When the carrier plate 8 descends, the bottom end of the rotating shaft 11 is connected to the top of the motor 14. A plurality of swing holes 16 are provided in a circular array on the tooling cylinder 7. The top of the furnace body 1 is provided with a plug hole 15 on the same vertical line as the axis of the tooling cylinder 7. Figure 6 As shown, the bottom end of the rotating shaft 11 is provided with a polygonal hole, and the top end of the motor shaft is provided with a polygonal rod matching the polygonal hole. When the bottom end of the rotating shaft 11 falls on the motor shaft, it quickly docks with the motor shaft. On the contrary, when the rotating shaft 11 rises, its bottom end quickly separates from the motor shaft, similar to a coupling. When the motor shaft rotates with the rotating shaft 11, the rotating shaft 11 rotates with the friction sleeve 12. The outer cylindrical surface of the friction sleeve 12 rubs the nickel alloy rod to rotate in the rotating space 13. The outer surface of the nickel alloy rod receives the friction between the outer surface of the friction sleeve 12 and the cavity surface of the tooling cylinder 7, so that the oxide scale on the outer surface of the nickel alloy rod falls downward. As the nickel alloy rod continues to rotate, the oxide scale falls through the swing hole 16 and falls into the annealing chamber 102. A rotating plate 22 is provided on the top surface of the carrier plate 8. A sleeve hole 23 is opened in the middle of the rotating plate 22. A bearing is embedded in the sleeve hole 23. The bottom end of the rotating shaft 11 passes through the bearing downward and extends into the motion space 10.

[0017] like Figure 2 As shown, a clamping cavity 4 is provided in the structural wall of the heating cavity 101, and the bottom end of the clamping cavity 4 is above the annealing cavity 102. A heating tube 5 is provided in the clamping cavity 4, and the clamping cavity 4 surrounds the outer periphery of the furnace cavity. The furnace wall of the heating cavity 101 is provided with a plurality of heating holes 6 communicating with the clamping cavity 4. When the heating tube 5 is energized, heat is provided to the clamping cavity 4. When the support spring 9 is fully released, the carrier plate 8 and the rotating plate 22 are located in the heating cavity 101. The furnace door can be opened to place the nickel alloy bars in the rotating space 13 and distribute them in an annular manner. These nickel alloy bars are placed in the rotating space 13 and are distributed in an annular manner. The bottom end of the alloy rod falls on the rotating plate 22. These nickel alloy rods are distributed in a ring shape in the rotating space 13 and are dragged into the heating chamber 101. When they are in the heating chamber 101, they are subjected to high-temperature heating. When they are dropped into the annealing chamber 102, they are subjected to cooling annealing. The annealing chamber 102 is not only used for annealing, but also for causing the oxide scale on the nickel alloy rod to fall off downward by rotating. When the oxide scale falls off, the motor 14 for driving the rotation is located at the bottom side of the heating chamber 101, away from the high-temperature hot zone, and has a reasonable structure.

[0018] A foot 17 is fixed to the bottom of the furnace body 1, and a blanking space 18 is formed between the periphery of the tooling tube 7 and the cavity wall of the annealing chamber 102. A discharge hole 19 communicating with the cavity bottom of the annealing chamber 102 is opened at the bottom of the furnace body 1, and the detached oxide scale is finally discharged outward through the discharge hole 19.

[0019] The upper and lower ends of the tooling tube 7 are provided with positioning sleeves 20, and the outer surface of the positioning sleeves 20 is slidably matched on the cavity wall of the furnace body 1 for easy assembly. The positioning sleeve 20 at the bottom is provided with a chamfered surface 21 that gradually tilts downward from the top surface to facilitate the oxide scale to fall downward. A square block 24 is fixed to the cavity bottom of the furnace body 1, and an anti-rotation seat 25 is fixed to the bottom surface of the tooling tube 7. A square opening 26 is provided on the anti-rotation seat 25. The anti-rotation seat 25 is clamped on the square block 24 through the square opening 26 to prevent the tooling tube 7 from rotating with the rotating shaft 11.

[0020] like Figure 4 As shown, a plurality of first friction rails 27 are provided in a circular array on the cavity wall of the tooling cylinder 7, and a plurality of second friction rails 28 are provided on the outer wall of the friction sleeve 12. When the rotating shaft 11 rotates, the nickel alloy rod is rotated in the rotating space 13 by friction of the second friction rails 28 and the first friction rails 27.

[0021] Working principle and effect: open the hatch on the heating chamber 101, put the nickel alloy rod on the rotating plate 22, release the maximum length of the support spring 9, bounce the carrier plate 8 upward, and the carrier plate 8 bounces the rotating plate 22 upward and drags the nickel alloy rod into the heating chamber 101 at the same time. At the same time, the rotating shaft 11 also rises into the heating chamber 101, and the positioning hole at the bottom of the rotating shaft 11 is separated from the top of the motor shaft. Current is passed through the heating tube 5, and the heating tube 5 heats the clamping chamber 4. The high-temperature heat passes through the heating hole 6 into the heating chamber 101 and is fed back to the nickel alloy rod, so that these nickel alloy rods are heated within a certain period of time. At this time, since the rotating plate 22 is in the clamping chamber 4, when the furnace door is opened and the rotating plate 22 is rotated, the rotating plate 22 is used as the bottom rotating area to rotate with these nickel alloy rods to improve their heating efficiency. The furnace door is closed to continue to heat the nickel alloy rod at high temperature until it turns red, the current heating tube 5 is disconnected to stop heating, and the third-party tool is inserted into the heating chamber 101 through the jack 15. Push the third-party tool with force. The bottom end of the third-party tool has a bearing or a swivel. The bearing or the swivel is supported on the rotating shaft 11 and applies downward pressure to the top of the rotating shaft 11, so that the rotating shaft 11 descends with the carrier plate 8. The carrier plate 8 and the rotating plate 22 carry the nickel alloy rod and descend into the annealing chamber 102. At this time, the support spring 9 is compressed and shortened in the motion space 10. After the rotating shaft 11 descends, it automatically docks with the motor (motor 14) shaft at its bottom. At this time, the heating tube 5 is powered off, and the motor 14 is powered on, driving the motor shaft to rotate with the rotating shaft 11, and the rotating shaft 11 rotates with the friction sleeve 12. Since the nickel alloy rod is in the rotating space 13 between the friction sleeve 12 and the wall of the annealing chamber 102, when the friction sleeve 12 rotates, the second friction rail 28 on the outside is used to rub the outer cylindrical surface of the nickel alloy rod, and these nickel alloy rods are rotated in the rotating space 13 by friction. At the same time, when the outer cylindrical surface of the nickel alloy rod touches the first friction rail 27 on the wall of the annealing chamber 102, it is equivalent to further rubbing the outer cylindrical surface of the nickel alloy rod by the first friction rail 27, so that the oxide scale on the nickel alloy rod falls off downward, and these nickel alloy rods are centrifugally rotated in the rotating space 13, so that the fallen oxide scale falls off to the bottom positioning sleeve 20 through the swinging hole 16, and is discharged into the discharge hole 19 through the chamfered surface 21 on the bottom positioning sleeve 20, and then falls outward from the discharge hole 19. At the same time, as the heating environment slowly cools down, these nickel alloy bars complete annealing. Since these nickel alloy bars will also be rotated by friction during annealing, the annealing efficiency is improved. After the annealing work is completed, the third-party tool is removed, the support spring 9 releases the length, and pushes the carrier plate 8 to reset and rise. The carrier plate 8 pushes the rotating plate 22 to reset and rise. The rotating plate 22 resets and rises the nickel alloy bars into the heating chamber 101, and the furnace door is opened to take out the nickel alloy bars. The heating, annealing and oxide scale shedding work are completed. The surface brightness of the nickel alloy bars is relatively high. If the nickel alloy bars are the final machined products, the product quality is relatively high, and the surface does not need to be polished again by off-site equipment, which improves the efficiency of the finished product.

[0022] The present invention also provides a heat treatment process for a nickel alloy bar, comprising the following process steps: Step S01, heating the nickel alloy rod at high temperature in the heating chamber 101 to improve its performance; Step S02, returning the nickel alloy rod after high temperature heating to the annealing chamber 102 for cooling annealing; Step S03, while high-temperature annealing, the motor 14 rotates the tooling barrel 7, and the tooling barrel 7 rotates and rubs the nickel alloy rod, so that the oxide scale on the nickel alloy rod automatically falls off, and the nickel alloy rod is returned upward to the heating chamber 101, the heating chamber 101 is powered off and cooled, and finally the furnace door is opened to take out the nickel alloy rod, and the work is completed.

[0023] Since the motor 14 is in the annealing chamber 102, the motor 14 is far away from the high-temperature heating zone, or in actual assembly, the motor 14 is installed on the outside of the bottom of the furnace body 1, and only the motor shaft enters the annealing chamber 102 upward, so as to prevent the heat from damaging the motor 14 when the heating chamber 101 is heated at high temperature. The third-party tool mentioned in the present invention can be made by yourself, for example, a push rod is first set, and then a bearing is installed at one end of the push rod, one end of the bearing is always located in the heating chamber 101, and the other end of the push rod is exposed above the furnace body 1 through the jack 15, and the push rod is pulled upward, and the push rod brings the bearing up, so that the bearing leaves the top of the rotating shaft 11; on the contrary, during annealing, the push rod is pressed down, and the push rod presses the bearing on the top of the rotating shaft 11, and when the rotating shaft 11 rotates, the bearing also rotates, and the push rod does not rotate. At this time, a large nut is set at the top of the furnace body 1 to fix the push rod, or the push rod is pressed with a tool. This is some operating methods in the existing machining process, which has nothing to do with the heat treatment device itself, so it is not marked in the figure.

[0024] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0025] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nickel alloy bar heat treatment device, characterized in that: The invention comprises a furnace body (1) and a tool assembly (2) arranged at the bottom of the inner cavity of the furnace body (1), wherein the upper half of the furnace body (1) is a heating cavity (101) and the lower half is an annealing cavity (102); the tool assembly (2) comprises a tool tube (7) inserted into the annealing cavity (102), wherein the bottom end of the tool tube (7) is closed and the top end is open, and a carrier plate (8) capable of sliding up and down is arranged in the tool tube (7), and the bottom surface of the carrier plate (8) is in contact with the tool tube (102). The bottom of the cavity of the tooling tube (7) is connected to a support spring (9). Under the support of the support spring (9), a movement space (10) is formed between the carrier plate (8) and the bottom of the cavity of the tooling tube (7). A mounting hole is opened in the middle of the carrier plate (8). A rotating shaft (11) is installed in the mounting hole. A friction sleeve (12) is fixed on the rotating shaft (11). The bottom end of the rotating shaft (11) passes through the bottom surface of the carrier plate (8) and extends into the movement space (10). The friction sleeve (12) and the A rotating space (13) is formed between the cavity walls of the tooling cylinder (7), and a plurality of nickel alloy rods are arranged in a ring array and stand upright in the rotating space (13). When the carrier plate (8) rises, the nickel alloy rods are pushed into the heating cavity (101); the tooling assembly (2) also includes a motor (14) fixed in the movement space (10), and the motor (14) is located at the bottom side of the carrier plate (8). When the carrier plate (8) rises or falls, the bottom end of the rotating shaft (11) is in contact with the rotating shaft (11). The top end of the motor (14) is connected by a clutch. When the carrier plate (8) rises, the bottom end of the rotating shaft (11) is separated from the top end of the motor (14). When the carrier plate (8) descends, the bottom end of the rotating shaft (11) is connected to the top end of the motor (14). A plurality of swing holes (16) are provided in a circular array on the tooling cylinder (7). The top end of the furnace body (1) is provided with a plug hole (15) which is on the same vertical line as the axis of the tooling cylinder (7).

2. The nickel alloy bar heat treatment device according to claim 1, characterized in that: A clamping cavity (4) is provided in the structural wall of the heating cavity (101); the bottom end of the clamping cavity (4) is located above the annealing cavity (102); a heating tube (5) is provided in the clamping cavity (4); the clamping cavity (4) surrounds the periphery of the furnace cavity; and a plurality of heating holes (6) communicating with the clamping cavity (4) are provided in the furnace wall of the heating cavity (101).

3. The nickel alloy bar heat treatment device according to claim 2, characterized in that: A foot (17) is fixed to the bottom of the furnace body (1), a material-dropping space (18) is formed between the periphery of the tooling tube (7) and the cavity wall of the annealing cavity (102), and a row of holes (19) communicating with the cavity bottom of the annealing cavity (102) are provided at the bottom of the furnace body (1).

4. The nickel alloy bar heat treatment device according to claim 3, characterized in that: Positioning sleeves (20) are provided at the upper and lower ends of the tooling cylinder (7), and the outer surface of the positioning sleeve (20) is slidably fitted on the cavity wall of the furnace body (1), and the positioning sleeve (20) at the bottom is provided with a chamfered surface (21) that gradually slopes downward from the top surface.

5. The nickel alloy bar heat treatment device according to claim 4, characterized in that: A rotating plate (22) is provided on the top surface of the carrier plate (8), a sleeve hole (23) is provided in the middle of the rotating plate (22), a bearing is embedded in the sleeve hole (23), and the bottom end of the rotating shaft (11) passes through the bearing downward and extends into the movement space (10).

6. The nickel alloy bar heat treatment device according to claim 5, characterized in that: A square block (24) is fixed to the cavity bottom of the furnace body (1), an anti-rotation seat (25) is fixed to the bottom surface of the tooling cylinder (7), a square opening (26) is provided on the anti-rotation seat (25), and the anti-rotation seat (25) is clamped on the square block (24) through the square opening (26).

7. The nickel alloy bar heat treatment device according to claim 6, characterized in that: A plurality of first friction rails (27) are arranged in an annular array on the cavity wall of the tooling cylinder (7), and a plurality of second friction rails (28) are arranged on the outer wall of the friction sleeve (12). When the rotating shaft (11) rotates, the nickel alloy rod is rotated in the rotating space (13) by friction with the second friction rails (28) and the first friction rails (27).

8. A heat treatment process for a nickel alloy bar, suitable for the nickel alloy bar heat treatment device as claimed in claim 1, characterized in that: The process steps include: Step S01, heating the nickel alloy rod at high temperature in the heating chamber (101) to improve its performance; Step S02, returning the nickel alloy rod after high-temperature heating to the annealing chamber (102) for cooling and annealing; Step S03, while the high temperature annealing is being performed, the motor (14) drives the tooling barrel (7) to rotate, and the tooling barrel (7) drives the nickel alloy rod to rotate and rub, so that the oxide scale on the nickel alloy rod automatically falls off, and the nickel alloy rod is returned upward to the heating chamber (101), and the heating chamber (101) is powered off and cooled, and finally the furnace door is opened to take out the nickel alloy rod, and the work is completed.

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