A method for manufacturing a nickel-based superalloy tube blank

Abstract

The application discloses a kind of nickel-based superalloy pipe blank preparation methods, including screw module, elastic connecting structure, scraper, collection bin and baffle;Two screw module horizontal symmetry is fixed in the bottom of forging machine beam;Two elastic connecting structures are respectively arranged on the sliding table of two screw module. Scraper is connected with sliding table by elastic connecting structure, and scraper extends along horizontal direction and includes three sections connected in sequence: one section is horizontally arranged scraping section, second section is downwardly inclined guide section from the end of scraping section, third section is horizontally extended extension section from the end of guide section, and guide section is provided with a plurality of collection ports;Collection bin is arranged at the bottom of scraper, and the inner cavity thereof is communicated with collection port;Baffle is movably arranged at the discharge port of collection bin, for opening and closing discharge port. The application has the advantages of full coverage scraping, guiding by the structure of scraper itself, directly guiding the oxide skin scraped off into the collection bin, automatically opening the collection bin and vibrating slag removal.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, specifically to a method for preparing nickel-based high-temperature alloy tube blanks. Background Technology

[0002] Nickel-based high-temperature alloy tube blanks refer to intermediate products used in the production of seamless tubes. These blanks are made by using nickel as the base material (usually with a content greater than 50%), adding various alloying elements such as chromium, cobalt, molybdenum, tungsten, niobium, tantalum, aluminum, and titanium, and then smelting and casting them into steel ingots through advanced processes such as vacuum induction melting (VIM), electroslag remelting (ESR), or vacuum arc remelting (VAR). They are then subjected to hot working processes such as forging, rolling, or extrusion.

[0003] In the multi-directional forging process of nickel-based superalloy tube blanks, the resulting oxide scale fragments are easily pressed into the surface of the high-temperature blank during subsequent forging, forming indentation defects. This affects the surface quality of the tube blank and becomes a stress concentration point and fatigue crack source during subsequent cold rolling or use, seriously impacting the yield and service reliability of the tube blank. To obtain a uniform and refined forging microstructure, the oxide scale adhering to the forging surface needs to be cleaned in a timely manner. Existing cleaning methods mainly rely on conventional means such as manual scraping or air blowing. However, for forging machines with upper and lower forging tables working together, especially when the upper forging table is a movable structure, these cleaning methods are significantly insufficient. Specifically, when cleaning the upper movable forging surface, the detached oxide scale will fall directly and impact the surface of the fixed forging table below. Because the high-temperature oxide scale is hard and brittle, it will further fragment after falling from a height, breaking from the original blocky shape into smaller fragments, or even scattering in all directions. This phenomenon not only significantly increases the difficulty of oxide scale cleaning but also leads to a decrease in cleaning efficiency.

[0004] In view of this, we propose a method for preparing nickel-based superalloy tube blanks. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing nickel-based high-temperature alloy tube blanks to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a nickel-based high-temperature alloy tube blank, comprising the following steps: Provide a scale removal device, comprising: Two lead screw modules are symmetrically fixed to the bottom of the forging machine crossbeam; the symmetrical layout ensures the balance of driving force and the stability of operation.

[0007] Two flexible connection structures are respectively set on the slides of the two lead screw modules.

[0008] The scraper is connected to the slide table via an elastic connection structure. The scraper extends laterally and comprises three sequentially connected sections: a horizontally positioned scraping section, a downward-sloping guide section extending from the end of the scraping section, and a horizontally extending extension section extending from the end of the guide section. This three-section structure integrates guiding and scraping functions, resulting in a compact and efficient design. The guide section has multiple collection ports.

[0009] The collection chamber is located at the bottom of the scraper, and its inner cavity is connected to the collection port; it enables the direct collection of oxide scale after scraping, effectively preventing oxide scale from falling from a height and breaking upon impact.

[0010] A baffle is movably installed at the discharge port of the collection bin to open and close the discharge port; it ensures the sealing of the discharge port of the collection bin during the scraping process and allows for the controlled discharge of oxide scale when the baffle is reset.

[0011] The oxide scale is removed by sequentially switching between the following states using a cleaning device: Normal state: The scraper and collection bin are located at the beginning of the stroke of the lead screw module and on one side of the upper forging table of the forging machine. The scraping section is higher than the forging surface of the upper forging table. This position is ready for scraping operations and will not interfere with the normal operation of the forging machine's longitudinal movement of the upper forging table.

[0012] Scraping process: Two lead screw modules synchronously drive the scraper and collection bin to move laterally. After the guide section contacts the forging surface of the upper forging table, the scraper is guided downwards, and the elastic unit of the elastic connection structure is further compressed until the scraping section contacts the forging surface of the upper forging table. It continues to move laterally to scrape off the oxide scale to the end of the lead screw module's stroke. This process achieves automatic leveling and flexible contact between the scraper and the forging surface, with uniform scraping force, protecting the forging surface. The scraped oxide scale falls in the space between the guide section and the forging surface of the upper forging table and enters the collection bin through the collection port. The scraper's own structure forms a guiding channel, realizing the directional recovery of oxide scale.

[0013] Reset state: The upper forging platform, which is at the height of the scale removal, moves up, and the scraper and collection bin are driven by the lead screw module to return from the end of the stroke to the beginning of the stroke; a single cleaning cycle is completed.

[0014] Preferably, the top end of the extension section is fixed with a protruding strip with an arc-shaped cross-section; Under normal conditions, the arc-shaped convex surface of the raised strip is opposite to the forging surface of the upper forging table; the arc-shaped convex surface of the raised strip reduces the initial contact area with the forging surface, reduces the moving resistance, and makes the contact process smoother.

[0015] Preferably, the elastic connection structure includes: The U-shaped connecting block has its two longitudinal ends fixed to the slide table; the U-shaped structure provides room for movement.

[0016] Multiple connecting rods are respectively inserted into the transverse section of the connecting block.

[0017] The movable block is located in the internal cavity of the connecting block; the movable block transmits the pressure on the scraper to the elastic unit of the elastic connecting structure.

[0018] One end of each of the multiple connecting rods is fixedly connected to the scraping section, and the other end of each of the multiple connecting rods is fixedly connected to the movable block. A spring is provided between the movable block and the transverse section of the connecting block to form an elastic unit that can automatically reset.

[0019] Preferably, the bottom of the inner cavity of the collection chamber is inclined, which facilitates the automatic collection of oxide scale towards the discharge port by gravity. An installation strip is fixed to the inner wall of the discharge port of the collection chamber, and a baffle is hinged to the installation strip via a torsion spring; the compressed torsion spring provides the closing force for the baffle to automatically reset.

[0020] The top of the baffle is not higher than the scraping section. This design avoids interference between the scraper and the baffle, ensuring that the scraper moves smoothly along the forging surface. In addition, there is a gap between the starting end of the scraping section and the top of the baffle. This design avoids interference between the scraper and the baffle, ensuring that the baffle rotates smoothly when the discharge port is opened.

[0021] Preferably, the bottom end of the baffle is fixed with an elastic limiting strip, which can be engaged at the junction of the bottom end of the baffle and the bottom edge of the discharge port of the collection bin. The elastic limiting strip can buffer and limit when the baffle is closed, and together with the torsion spring, the baffle stably blocks the discharge port in the scraping state. The cross-section of the limiting strip is zigzag-shaped, and the zigzag-shaped engagement enhances the tightness of the baffle when it is closed.

[0022] Preferably, two passive triggering structures are provided on one side of the forging machine crossbeam. Each passive triggering structure includes a fixing frame fixed to one side of the crossbeam and a push block A fixed to the bottom of the fixing frame; the fixing frame provides a stable support point for the triggering action.

[0023] In the reset state, the scraper and the collection bin are driven by the lead screw module to return to the initial stroke and then continue to move. Push block A pushes the top of the baffle and drives the baffle to rotate around the hinge point, thereby opening the discharge port of the collection bin. This linkage design realizes automatic unloading after reset, and passive triggering requires no additional power.

[0024] Preferably, each of the passive triggering structures further includes a push block B and a squeeze block B.

[0025] Push block B is fixed on the fixed frame, and multiple extrusion blocks B are fixed sequentially on the bottom side of push block B. The cross-section of extrusion block B is arc-shaped, and there is a gap between adjacent extrusion blocks B.

[0026] The top of the movable block is fixed with a pressing block A, and the cross-section of the pressing block A is arc-shaped; the arc-shaped contact surface facilitates a smooth transition and reduces jamming.

[0027] In the reset state, during the opening of the collection bin's discharge port, the arc surface of the extrusion block A contacts the arc surfaces of multiple extrusion blocks B in sequence and passes through multiple gaps, driving the movable block to cause the collection bin to vibrate longitudinally; this vibration function effectively shakes off the oxide scale in the collection bin, ensuring that the collection bin is cleanly and thoroughly unloaded.

[0028] Compared with the prior art, the beneficial effects of the present invention are: The synchronously driven lead screw module, combined with an elastic connection structure with adaptive buffer function and a three-section scraper, achieves close contact and full coverage scraping of the forging surface of the upper forging table; at the same time, the scraped oxide scale is directly guided into the collection bin by the scraper's own structure.

[0029] By using a passive triggering structure set in the return stroke of the device, the opening of the collection chamber and vibration cleaning are completed automatically, without the need for additional power intervention throughout the entire process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cleaning device of the present invention; Figure 3 This is a schematic diagram of the cleaning device for the decomposed oxide scale state according to the present invention; Figure 4 This is a schematic diagram of the cleaning device of the present invention in an explosion. Figure 5 This is a schematic diagram of the baffle connection structure of the present invention; Figure 6 This is a cross-sectional schematic diagram of the cleaning device under normal conditions according to the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A; Figure 8 This is a cross-sectional schematic diagram of the cleaning device in the tilted state according to the present invention; Figure 9 This is a schematic diagram of the elastic action A of the connection structure of the present invention; Figure 10 This is a schematic diagram of the elastic action B of the connection structure of the present invention; Figure 11 This is a schematic diagram of the oxide scale removal process of the present invention.

[0031] In the diagram: 100, lead screw module; 200, baffle; 300, passive triggering structure; 400, connecting structure; 500, scraper; 600, collection bin; 700, mounting strip; 800, torsion spring; 201. Limiting strip; 301. Fixing frame; 302. Push block A; 303. Push block B; 304. Pressing block B; 401. Connecting block; 402. Connecting rod; 403. Movable block; 404. Spring; 405. Pressing block A; 501. Collection port; 502. Raised strip. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] A method for preparing nickel-based superalloy tube blanks, preferably based on typical operating conditions of a 1600-ton high-speed forging mill, with a forging temperature of approximately 1000-1150°C and an upper forging table size of approximately 800mm × 400mm. Please refer to [link / reference]. Figures 1 to 4 The device provides a scale removal device, which includes two lead screw modules 100, two flexible connection structures 400, a scraper 500, a collection bin 600, and a baffle 200.

[0034] Two lead screw modules are symmetrically fixed laterally to the bottom of the forging machine crossbeam; the symmetrical layout ensures the balance of driving force and the stability of operation.

[0035] The lead screw module 100 includes: Transmission system: servo motor, coupling, lead screw; Guiding system: linear guide rail; Support system: base; Auxiliary system: a slide table, limit switch, motor mount, and bearing mount that are connected to both the lead screw nut and the guide rail slider.

[0036] The two lead screw modules 100 are preferably controlled in a fully closed-loop manner and communicate with the forging machine PLC. Based on the feedback from the grating ruler mounted on the slide, the dual-axis synchronization accuracy is improved to ±0.05mm. This accuracy value is calculated based on the servo system resolution and the grating ruler feedback accuracy, ensuring that the scraper 500 runs smoothly and linearly without jamming. Finite element analysis (FEA) simulation, considering extreme cases such as oxide scale adhesion, shows that when dealing with a peak scraping resistance of 800N, the maximum deformation of the crossbeam is controlled within 0.02mm, far below the permissible value that would affect the smooth operation of the scraper 500, which is typically 0.1mm, proving that the rigidity of the support structure is sufficient.

[0037] Two elastic connection structures 400 are respectively set on the slides of the two lead screw modules 100.

[0038] The scraper 500 is connected to the slide table via an elastic connection structure 400. The scraper 500 extends laterally and includes three sequentially connected sections: a horizontally positioned scraping section, a downwardly inclined guide section extending from the end of the scraping section, and a horizontally extending extension section extending from the end of the guide section. This integrated three-section structure combines guiding and scraping functions into one compact and efficient design. The guide section has multiple collection ports 501.

[0039] In this embodiment, the scraper 500 is made of heat-resistant steel 5CrNiMo, and the width of the scraper 500 is wider than the upper forging table to ensure full coverage.

[0040] The collection chamber 600 is located at the bottom of the scraper 500, and its inner cavity is connected to the collection port 501; this enables the direct collection of oxide scale after scraping, effectively preventing oxide scale from falling from a height and breaking upon impact.

[0041] In this embodiment, please refer to Figure 6 and Figure 8 The bottom of the inner cavity of the collection chamber 600 is inclined, which facilitates the automatic collection of oxide scale towards the discharge port by gravity.

[0042] The baffle 200 is movably installed at the discharge port of the collection bin 600 to open and close the discharge port; to ensure the sealing of the discharge port of the collection bin 600 during the scraping process, and to controllably discharge the oxide scale when resetting.

[0043] In this embodiment, please refer to Figure 5 , Figure 6 and Figure 8 An installation strip 700 is fixed to the inner wall of the discharge port of the collection bin 600, and the baffle 200 is hinged to the installation strip 700 by a torsion spring 800; the compressed torsion spring 800 provides the closing force for the baffle 200 to automatically reset.

[0044] The torsion spring 800 uses imported high-temperature stainless steel materials, such as Inconel 718, to ensure elastic stability under heated conditions.

[0045] In this embodiment, please refer to Figure 6 and Figure 8 The top of the baffle 200 is not higher than the scraping section. This design avoids interference between the scraper 500 and the baffle 200, ensuring that the scraper 500 moves smoothly along the forging surface.

[0046] In this embodiment, please refer to Figure 6 and Figure 8 A gap is left between the starting end of the scraping section and the top of the baffle 200; this design avoids interference between the scraper 500 and the baffle 200, and ensures that the baffle 200 rotates smoothly when the discharge port is opened.

[0047] In this embodiment, please refer to Figure 6and Figure 8 The two ends of the baffle 200 are in contact with the two ends of the inner wall of the discharge port of the collection bin 600, and the baffle 200 is not obstructed by the collection bin 600 when it rotates.

[0048] Please see Figure 11 The oxide scale is removed by sequentially switching between the following states using a cleaning device: Normal state: The scraper 500 and the collection bin 600 are located at the initial stroke of the lead screw module 100 and on one side of the upper forging table of the forging machine. The scraping section is higher than the forging surface of the upper forging table. This position is ready for scraping operations and will not interfere with the normal operation of the forging machine's longitudinal movement of the upper forging table.

[0049] Scraping status: Figure 11 In direction a, the two lead screw modules 100 synchronously drive the scraper 500 and the collection bin 600 to move laterally. After the guide section contacts the forging surface of the upper forging table, the scraper 500 is guided to move downward, and the elastic unit of the elastic connection structure 400 is further compressed until the scraping section contacts the forging surface of the upper forging table. It continues to move laterally to scrape off the oxide scale to the end of the stroke of the lead screw module 100. This process realizes automatic leveling and flexible contact between the scraper 500 and the forging surface, with uniform scraping force and protection of the forging surface. The scraped oxide scale falls in the space between the guide section and the forging surface of the upper forging table and enters the collection bin 600 through the collection port 501. The scraper 500 itself forms a guide channel, realizing the directional recovery of oxide scale.

[0050] Reset status: Figure 11 In the middle b direction, the upper forging platform, which is at the height of the scale removal, moves up, and the scraper 500 and the collection bin 600 are driven by the lead screw module 100 to return from the end of the stroke to the beginning of the stroke; thus completing a single cleaning cycle.

[0051] In this embodiment, please refer to Figure 4 The top of the extension section is fixed with a raised strip 502 with an arc-shaped cross section, and the raised strip 502 is made of YG8 cemented carbide.

[0052] Under normal conditions, the arc-shaped convex surface of the protrusion 502 is opposite to the forging surface of the upper forging table; the arc-shaped convex surface of the protrusion 502 reduces the initial contact area with the forging surface, reduces the moving resistance, and makes the contact process smoother; preferably, the arc radius R of the arc-shaped convex surface of the protrusion 502 is 5-8mm, which significantly reduces the frictional resistance when the scraper 500 moves.

[0053] For details, please refer to Figure 4 The elastic connection structure 400 includes: The U-shaped connecting block 401 has its two longitudinal ends fixed to the slide table; the U-shaped structure provides space for movement.

[0054] Multiple connecting rods 402 are respectively inserted into the transverse section of the connecting block 401.

[0055] The movable block 403 is located in the internal cavity of the connecting block 401; the movable block 403 transmits the pressure on the scraper 500 to the elastic unit of the elastic connecting structure 400.

[0056] One end of each of the multiple connecting rods 402 is fixedly connected to the scraping section, and the other end of each of the multiple connecting rods 402 is fixedly connected to the movable block 403. A spring 404 is provided between the movable block 403 and the transverse section of the connecting block 401 to form an elastic unit that can automatically reset.

[0057] In this embodiment, the spring 404 is a high-temperature disc spring made of 60Si2MnA material, which replaces the ordinary helical spring and has better heat resistance and anti-relaxation properties.

[0058] In this embodiment, it is preferable that the pressure of the scraper 500 on the forging surface is kept stable in the range of 8-12 N / cm² during the scraping stroke, which can break up the dense oxide scale without damaging the forging surface of the upper forging table.

[0059] Please see Figure 6 and Figure 7 A flexible limiting strip 201 is fixed to the bottom end of the baffle 200. The limiting strip 201 can be engaged at the junction of the bottom end of the baffle 200 and the bottom edge of the discharge port of the collection bin 600. The flexible limiting strip 201 can buffer and limit when the baffle 200 is closed. Together with the torsion spring 800, the baffle 200 stably blocks the discharge port in the scraping state. The cross-section of the limiting strip 201 is zigzag-shaped, and the zigzag-shaped engagement enhances the tightness of the baffle 200 when it is closed.

[0060] In this embodiment, the limiting strip 201 can be made of fluororubber.

[0061] For further details, please refer to Figure 2 , Figure 3 and Figure 8 Two passive triggering structures 300 are provided on one side of the crossbeam of the forging machine. Each passive triggering structure 300 includes a fixed frame 301 fixed to one side of the crossbeam and a push block A302 fixed to the bottom of the fixed frame 301. The fixed frame 301 provides a stable support point for the triggering action.

[0062] In this embodiment, the contact surface of the push block A302 can be designed as an upward-sloping surface, preferably with an inclination angle of 45°, which needs to overcome the force of a torsion spring 800 of about 15-20N to reliably open the baffle 200.

[0063] In the reset state, the scraper 500 and the collection bin 600 are driven by the lead screw module 100 to return to the initial stroke and then continue to move. The push block A302 pushes the top of the baffle 200 and drives the baffle 200 to rotate around the hinge point, thereby opening the discharge port of the collection bin 600. This linkage design realizes automatic unloading after reset, and passive triggering requires no additional power.

[0064] For further details, please refer to [link / reference]. Figure 9 and Figure 10 Each passive triggering structure 300 also includes a push block B303 and a squeeze block B304.

[0065] Push block B303 is fixed on the fixing frame 301, and multiple extrusion blocks B304 are fixed sequentially on the bottom side of push block B303. The cross-section of extrusion block B304 is arc-shaped, and there is a gap between adjacent extrusion blocks B304.

[0066] The top of the movable block 403 is fixed with a pressing block A405, and the cross-section of the pressing block A405 is arc-shaped; the arc-shaped contact surface facilitates smooth transition and reduces jamming.

[0067] In this embodiment, the preferred spacing between the extrusion blocks B304 is 15-20 mm. When the collection chamber 600 passes through at a speed of 100 mm / s, the periodic collision between the extrusion blocks A405 and B304 can cause the collection chamber 600 to generate mechanical vibration with a frequency of about 5-7 Hz and an amplitude of 2-5 mm. This vibration can effectively overcome the static friction between the oxide scale and the wall of the collection chamber 600, which helps to remove the oxide scale.

[0068] In the reset state, during the opening of the discharge port of the collection bin 600, the arc surface of the extrusion block A405 contacts the arc surface of multiple extrusion blocks B304 in sequence and passes through multiple gaps, driving the movable block 403 to drive the collection bin 600 to vibrate longitudinally; this vibration function effectively shakes off the oxide scale in the collection bin 600, ensuring that the collection bin 600 unloads cleanly and thoroughly.

[0069] Working Principle: When removing oxide scale from the forging surface of the upper forging table of the forging machine, the upper forging table is controlled by the hydraulic mechanism of the forging machine at a pre-set removal height. At this height, the forging surface of the upper forging table corresponds to the arc-shaped protrusion of the protrusion bar 502. The two lead screw modules 100 operate synchronously, driving the two connecting blocks 401 to move from the beginning of the stroke towards the end of the stroke. The arc-shaped protrusion of the protrusion bar 502 first contacts the forging surface. As the movement continues, the protrusion bar 502, together with the scraper 500, is squeezed downwards, the collection chamber 600 moves downwards together, the connecting rod 402 moves downwards relative to the connecting block 401, the movable block 403 moves downwards, and the spring 404 is further compressed. Then, the forging surface contacts the guide section of the scraper 500, and the forging surface continues to squeeze the scraper 500 along the inclined guide section until the scraping section of the scraper 500 contacts the forging surface. Due to the action of spring 404, the scraping section is in close contact with the forging surface, removing the oxide scale adhering to the forging surface during the movement. The scraped oxide scale falls into the space between the guide section and the forging surface of the upper forging table, and enters the collection chamber 600 through the collection port 501. After reaching the end of the stroke, the cleaning of the forging surface is completed. At this time, the upper forging table moves upward under the control of the hydraulic mechanism of the forging machine, and the two lead screw modules 100 synchronously drive the two connecting blocks 401 to return from the end of the stroke to the beginning of the stroke, and then continue to move a small predetermined distance. The push block A302 contacts the top of the baffle 200 and drives the baffle 200 to rotate around the hinge point. The torsion spring 800 is further compressed, and the limiting strip 201 disengages from the junction of the collection chamber 600 and the baffle 200 as the baffle 200 rotates, opening the discharge port of the collection chamber 600. As the discharge port opens, connecting block 401 passes pusher block B303, causing pusher block B303 to extend into connecting block 401. The arc surface of extrusion block A405 contacts the arc surfaces of multiple extrusion blocks B304 in sequence and passes through multiple gaps. The periodic collision between extrusion block A405 and extrusion block B304 causes the collection chamber 600 to vibrate. Vibration cleaning and opening baffle 200 occur simultaneously, discharging the oxide scale from the collection chamber 600. The discharged oxide scale is collected by the collection chamber located outside the current position below the discharge port. Finally, scraper 500 and collection chamber 600 return to the initial stage of the stroke, and baffle 200 closes the discharge port under the push of torsion spring 800. At this point, the entire cleaning cycle ends, and the forging machine continues to forge nickel-based high-temperature alloy billets.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method for preparing a nickel-based superalloy tube blank, characterized in that, Includes the following steps: Provide a scale removal device, comprising: Two lead screw modules (100) are symmetrically fixed laterally to the bottom of the forging machine crossbeam; Two flexible connection structures (400) are respectively set on the slides of two lead screw modules (100); The scraper (500) is connected to the slide table through the elastic connection structure (400). The scraper (500) extends laterally and includes three sections connected in sequence: a horizontal scraping section, a guide section that slopes downward from the end of the scraping section, and an extension section that extends horizontally from the end of the guide section. The guide section has multiple collection ports (501). A collection chamber (600) is located at the bottom of the scraper (500), and its inner cavity is connected to the collection port (501); A baffle (200) is movably installed at the discharge port of the collection bin (600) to open and close the discharge port; The oxide scale is removed by sequentially switching between the following states using a cleaning device: Normal state: The scraper (500) and the collection bin (600) are located at the beginning of the stroke of the lead screw module (100) and are on the side of the upper forging table of the forging machine. The scraping section is higher than the forging surface of the upper forging table. Scraping state: The two lead screw modules (100) synchronously drive the scraper (500) and the collection bin (600) to move laterally. After the guide section contacts the forging surface of the upper forging table, the scraper (500) is guided to move down, and the elastic unit of the elastic connection structure (400) is further compressed until the scraping section contacts the forging surface of the upper forging table. It continues to move laterally to scrape off the oxide scale to the end of the stroke of the lead screw module (100). The scraped oxide scale falls in the space between the guide section and the forging surface of the upper forging table and enters the collection bin (600) through the collection port (501). Reset state: The upper forging platform at the height of the scale removal is moved up, and the scraper (500) and the collection bin (600) are driven by the lead screw module (100) to return from the end of the stroke to the beginning of the stroke.

2. The method for preparing a nickel-based high-temperature alloy tube blank according to claim 1, characterized in that, The top end of the extension section is fixed with a raised strip (502) with an arc-shaped cross section. Under normal conditions, the arc-shaped convex surface of the raised strip (502) is opposite to the forging surface of the upper forging table.

3. The method for preparing a nickel-based high-temperature alloy tube blank according to claim 1, characterized in that, The elastic connection structure (400) includes: The U-shaped connecting block (401) has its two longitudinal ends fixed to the slide table; Multiple connecting rods (402) are respectively inserted into the transverse section of the connecting block (401); The movable block (403) is located in the internal cavity of the connecting block (401); One end of each of the multiple connecting rods (402) is fixedly connected to the scraping section, and the other end of each of the multiple connecting rods (402) is fixedly connected to the movable block (403). A spring (404) is provided between the movable block (403) and the transverse section of the connecting block (401).

4. The method for preparing a nickel-based high-temperature alloy tube blank according to claim 3, characterized in that, The bottom of the inner cavity of the collection bin (600) is an inclined surface, and an installation strip (700) is fixed to the inner wall of the discharge port of the collection bin (600). The baffle (200) is hinged to the installation strip (700) by a torsion spring (800). The top of the baffle (200) is not higher than the scraping section, and there is a gap between the starting end of the scraping section and the top of the baffle (200).

5. The method for preparing a nickel-based high-temperature alloy tube blank according to claim 4, characterized in that, The bottom end of the baffle (200) is fixed with an elastic limiting strip (201). The cross section of the limiting strip (201) is in the shape of a broken line. The limiting strip (201) can be snapped into the joint between the bottom end of the baffle (200) and the bottom edge of the discharge port of the collection bin (600).

6. The method for preparing a nickel-based superalloy tube blank according to claim 4, characterized in that, Two passive triggering structures (300) are provided on one side of the crossbeam of the forging machine. Each passive triggering structure (300) includes a fixed frame (301) fixed to one side of the crossbeam and a push block A (302) fixed to the bottom of the fixed frame (301). In the reset state, the scraper (500) and the collection bin (600) are driven by the screw module (100) to return to the initial stroke and continue to move. The push block A (302) pushes the top of the baffle (200) and drives the baffle (200) to rotate around the hinge point, thereby opening the discharge port of the collection bin (600).

7. The method for preparing a nickel-based high-temperature alloy tube blank according to claim 6, characterized in that, Each of the passive triggering structures (300) further includes a push block B (303) and a squeeze block B (304). Push block B (303) is fixed on the fixed frame (301), and multiple extrusion blocks B (304) are fixed on the bottom side of push block B (303) in sequence. The cross section of extrusion block B (304) is arc-shaped, and there is a gap between adjacent extrusion blocks B (304). The top of the movable block (403) is fixed with an extrusion block A (405), and the cross section of the extrusion block A (405) is arc-shaped; In the reset state, during the opening of the discharge port of the collection bin (600), the arc surface of the extrusion block A (405) contacts the arc surfaces of multiple extrusion blocks B (304) in sequence and passes through multiple gaps, driving the movable block (403) to drive the collection bin (600) to vibrate longitudinally.

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