Element homogenization heat treatment method for single-crystal high-temperature alloy containing Ru element

Abstract

The invention discloses an element homogenization heat treatment method for single-crystal high-temperature alloy containing Ru element, and relates to the field of single-crystal high-temperature alloy heat treatment. Nickel-based single-crystal high-temperature alloy containing Ru element and a clamping assembly are gradually heated through preheating, and thermal stress and deformation of a workpiece in the heat treatment process are reduced; when alloy in a regular shape is clamped, an adjusting wheel is rotated, a worm is driven to rotate through a rotating shaft, then a worm gear controls a lead screw to rotate, a moving block stably moves on the lead screw, a vertical block and a horizontal plate are driven to be synchronously adjusted, and it is ensured that a clamping plate is tightly attached to the surface of a workpiece; when alloy in an irregular shape is clamped, one clamping assembly is controlled to conduct position adjustment through work of the driving motor under the action of chain transmission and the connecting plate, the clamping assembly moves to the position above the bearing plate from one side of the bearing plate, and adjustment of the independent clamping assembly is achieved. The clamping device can effectively solve the problem of unstable clamping of workpieces with irregular shapes, and ensures that the workpieces are uniformly heated in the heat treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment of single crystal high temperature alloys, in particular to an element homogenization heat treatment method for single crystal high temperature alloys containing Ru elements. Background Art

[0002] Single crystal high-temperature alloys are used in key hot-end components such as high-pressure turbine rotor blades and guide vanes of aircraft engines due to their excellent high-temperature performance. Adding Re is an effective means to improve Ni-based single crystal high-temperature alloys, but Re is an element that forms a strong topological close-packed phase. During long-term use, it is easy to precipitate a strong topological close-packed phase, which damages the high-temperature durability of the alloy. The addition of Ru can perfectly fill the shortcomings of insufficient structural stability of Re-containing alloys. The mechanical properties of cast high-temperature alloys are closely related to process factors. Through heat treatment, the alloy properties can be significantly improved. Among them, the vacuum furnace, as the main equipment in the heat treatment method, can effectively control the temperature and atmosphere to ensure uniform distribution of elements during the heat treatment process.

[0003] A vacuum furnace with a workpiece clamping device described in the prior art includes a vacuum furnace body, a pair of support frames for placing workpieces fixedly connected to the vacuum furnace body, and side walls of the two support frames facing away from each other are respectively fixedly connected to supporting plates, and a first accommodating groove is provided on the upper surface of the supporting plate, and a plurality of adjusting screws are rotatably connected in the first accommodating groove, and sliding blocks are threadedly connected on the adjusting screws, and the sliding blocks slide in cooperation with the first accommodating groove, and a transition plate is fixedly connected to the upper surface of the sliding block, and a mounting plate is fixedly connected to the side of the transition plate facing the workpiece, and the mounting plates located on the same side of the workpiece are connected to a limiting component on the side away from the transition plate.

[0004] Although the above technology can reduce the possibility of displacement of the workpiece and thus reduce the deformation effect, for irregularly shaped workpieces, it may be difficult to find a suitable clamping point only from the side, which can easily lead to unstable clamping and affect the heat treatment effect. This is especially true for single-crystal high-temperature alloys containing Ru elements, whose complex structure requires more precise clamping. Otherwise, it is easy to cause uneven distribution of elements, thereby affecting the overall performance of the alloy. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an element homogenization heat treatment method for a single crystal high-temperature alloy containing Ru element, so as to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] In one aspect, the present invention provides a method for heat treatment of Ru-containing single crystal high-temperature alloys, comprising the following steps:

[0008] Step 1: Clamping and preheating: Place the Ru-containing nickel-based single crystal high-temperature alloy on a carrier plate in a vacuum furnace, then manually drive the clamping assembly in the processing mechanism to clamp the Ru-containing nickel-based single crystal high-temperature alloy, close the furnace door and evacuate to a predetermined pressure, set the preheating temperature and heating rate, start the heating program, and use a slow heating method, raising the temperature by 100°C per hour until the temperature reaches 600°C, and then keep warm according to the thickness of the alloy;

[0009] Step 2: Solution treatment: heat the alloy to 1270°C / 1 hour + 1280°C / 1 hour + 1290°C / 2 hours + 1300°C / 3 hours + 1310°C / 30 hours, and then air cool;

[0010] Step 3: Primary aging treatment: heat the alloy to 1100°C for 4 hours and then air cool to complete the primary aging.

[0011] Step 4: Secondary aging treatment: reheat to 870°C for 8 hours, then air cool to complete the secondary aging.

[0012] Specifically, the holding time in step one is 2 minutes per millimeter of thickness, the predetermined pressure is 1×10^-3Pa, and the position of the clamping component can be adjusted by the linkage component and the rotating component so as to clamp according to the shape of the single crystal high-temperature alloy containing Ru element.

[0013] Another aspect of the present invention provides an element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru, the device comprising: a vacuum furnace, wherein a carrying plate is provided in the vacuum furnace; the carrying plate is fixed to the bottom of the vacuum furnace by supporting legs, and is used to place a single crystal high-temperature alloy workpiece containing Ru;

[0014] Processing mechanism; the processing mechanism includes multiple clamping components, multiple protective shells, rotating components and linkage components; the clamping components are symmetrically distributed on both sides of the carrier plate;

[0015] Each clamping assembly is provided with: a rotating shaft and a worm fixedly connected thereto; two worm wheels meshing with the worm, with a lead screw passing through the center of each worm wheel;

[0016] The moving block is sleeved on the screw rod and connected to the horizontal plate through the vertical block. The clamping plate is fixed at the end of the horizontal plate. The clamping plate has a built-in pressure sensor for real-time monitoring of the clamping force.

[0017] The rotating shaft rotates to drive the worm, which drives the worm wheel and the screw, so that the clamping plate adapts to the shape of the workpiece to complete the clamping;

[0018] The rotating assembly is arranged through the rear end wall of the vacuum furnace (1), and comprises a sleeve, a shaft and a driving motor; the outer wall of the sleeve is fixed with a first sprocket, and the outer wall of the shaft is fixed with a first gear;

[0019] The driving motor is fixed to the outer wall of the vacuum furnace, and drives the sleeve to rotate through the transmission chain, driving the clamping assembly to adjust its position;

[0020] The linkage assembly includes an electric telescopic cylinder and a U-shaped plate.

[0021] A first transmission wheel and a second transmission wheel are rotatably installed in the U-shaped groove of the U-shaped plate, and the first transmission wheel is meshed and connected with the second transmission wheel;

[0022] The first transmission wheel tooth surface is meshed with the first gear tooth surface, and the second transmission wheel tooth surface is meshed with the second gear tooth surface;

[0023] The linkage assembly raises and lowers the U-shaped plate through the electric telescopic cylinder, switches the meshing state of the first gear and the second gear, and realizes the synchronous adjustment of the single-sided or double-sided clamping assembly.

[0024] Furthermore, a control unit is provided in a control cabinet outside the vacuum furnace. The control panel of the control cabinet is electrically connected to the drive motor, electric telescopic cylinder and pressure sensor for automatically adjusting the clamping position and force; the control unit dynamically adjusts the clamping force and position according to the pressure sensor feedback and preset parameters to ensure that the workpiece is heated evenly and avoid uneven distribution of elements caused by deformation; the control cabinet is arranged on one side of the base, and a control panel is provided on the top of the outer wall of the control cabinet.

[0025] Furthermore, a base is fixed under the vacuum furnace, a fixed block is fixed to the bottom of the base away from the furnace door, a vertical plate is fixed to the side wall of the upper surface of the fixed block, and the linkage assembly is arranged between the rotating assembly and the fixed block.

[0026] The processing mechanism includes two protective shells corresponding to two clamping components; the two protective shells cover the outside of the clamping components, and the rotating component is connected to the protective shells.

[0027] Furthermore, the sleeve extends through the rear end wall of the vacuum furnace to the outside; a driving motor is fixedly installed on the top outer wall of the vertical plate by screws, and the output end of the driving motor is rotatably connected to the rear end outer wall of the vacuum furnace. A second sprocket and a second gear are fixedly sleeved on the outer wall of the output end of the driving motor in sequence, and the second sprocket is connected to the first sprocket through a transmission chain.

[0028] Furthermore, the length of the shaft is greater than the length of the sleeve, the outer wall of the shaft is in contact with the inner wall of the sleeve and is rotatably connected, the outer walls of the sleeve and the shaft located inside the furnace are respectively fixed with a first fan-shaped plate and a second fan-shaped plate, and the side of the protective shell away from the furnace door is fixed with a connecting plate, and the two connecting plates are respectively fixedly connected to the first fan-shaped plate and the second fan-shaped plate.

[0029] Furthermore, the linkage assembly includes an electric telescopic cylinder and a U-shaped plate. The electric telescopic cylinder is fixedly mounted on the upper surface of the fixed block by screws, and the U-shaped plate is fixedly mounted on the telescopic end of the electric telescopic cylinder by screws.

[0030] Furthermore, a worm is fixedly connected to one end of the rotating shaft, and a worm wheel is symmetrically provided below the worm. The tooth surfaces of the two worm wheels are meshed with the worm, and a screw rod is fixed through the center of the two worm wheels. Moving blocks are sleeved on the two screw rods. Vertical blocks are fixed on the upper surfaces of the two moving blocks. A horizontal plate is fixed to the top wall of the two vertical blocks away from the worm wheel, and a clamping plate is fixed to the outer wall of the horizontal plate.

[0031] Furthermore, the clamping plate is symmetrically provided with through-holes, the ends of the two screw rods pass through the through-holes, the diameters of the two through-holes are larger than the diameters of the screw rods, and a pressure sensor is embedded in the interior of the clamping plate.

[0032] Furthermore, a protective shell is arranged on the outside of the worm and two worm wheels, one end of the two screws are rotatably connected to the inner wall of the protective shell, the end of the worm away from the rotating shaft is rotatably connected to the inner wall of the protective shell, the other end of the rotating shaft passes through the protective shell and is fixedly connected to an adjusting wheel, and arc-shaped support rods are symmetrically fixed on the lower surface of the protective shell, and the ends of the two arc-shaped support rods are in contact with the outer wall of the support leg.

[0033] In summary, the present invention has the following beneficial effects: the present invention can effectively solve the problem of unstable clamping of irregularly shaped workpieces, improve the heat treatment effect and production efficiency, ensure that the workpiece is heated evenly during the heat treatment process, avoid uneven element distribution caused by deformation or displacement of the workpiece, and thus improve the overall performance of the alloy;

[0034] And by preheating, the Ru-containing nickel-based single crystal high-temperature alloy and the clamping component can be gradually heated up, reducing the temperature gradient and reducing the thermal stress and deformation of the workpiece during the heat treatment process;

[0035] When clamping regularly shaped alloys, one only needs to rotate the adjusting wheel to drive the worm to rotate through the rotating shaft, and then the worm gear controls the rotation of the lead screw. The moving block moves smoothly on the lead screw, driving the vertical block and horizontal plate to adjust synchronously, ensuring that the clamping plate fits closely to the workpiece surface for precise clamping. At the same time, the internal pressure sensor can monitor the clamping force in real time and feedback the stress status of the workpiece.

[0036] When clamping irregularly shaped alloys, the drive motor controls a clamping component to adjust its position under the action of the chain drive and the connecting plate, moving it from one side of the carrier plate to above the carrier plate to achieve adjustment of a single clamping component. Or when both clamping components need to be adjusted, the electric telescopic cylinder is started to drive the two transmission wheels upward through the U-shaped plate, so that the second gear and the first gear are transmitted. At this time, the other clamping component can be adjusted synchronously to ensure that the two clamping components work together, accurately adapt to the shape of the workpiece, and achieve stable clamping. By automatically controlling and adjusting the position of the clamping component, manual operation is reduced, labor intensity is reduced, and the safety and convenience of operation are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A diagram showing the steps of the method of the present invention;

[0038] Figure 2 This is a schematic diagram of the axonometric view of the vacuum furnace of the present invention;

[0039] Figure 3 It is a schematic diagram of the main view of the vacuum furnace of the present invention;

[0040] Figure 4 This is an oblique axonometric diagram of a vacuum furnace according to the present invention;

[0041] Figure 5 It is a schematic isometric view of the processing mechanism of the present invention;

[0042] Figure 6 It is an oblique isometric diagram of the processing mechanism of the present invention;

[0043] Figure 7 This is a schematic diagram of the split axonometric view of the processing mechanism of the present invention;

[0044] Figure 8 This is a schematic diagram of an oblique axonometric split of the processing mechanism of the present invention;

[0045] Figure 9 It is an enlarged view of point A of the present invention.

[0046] Description of the drawings: 1. Vacuum furnace; 101. Base; 102. Control cabinet; 1021. Control panel; 103. Furnace door; 104. Fixed block; 105. Vertical plate; 2. Loading plate; 201. Support leg; 3. Processing mechanism; 4. Clamping assembly; 401. Rotating shaft; 4011. Adjusting wheel; 402. Worm gear; 4021. Screw; 403. Moving block; 4031. Vertical block; 404. Horizontal plate; 405. Clamping plate; 4051. Perforation; 406. Worm; 5 , protective shell; 501, arc-shaped support rod; 502, connecting plate; 6, rotating assembly; 601, sleeve; 6011, first sprocket; 602, shaft; 6021, first gear; 603, drive motor; 6031, second sprocket; 6032, second gear; 604, first sector plate; 605, transmission chain; 606, second sector plate; 7, linkage assembly; 701, electric telescopic cylinder; 702, U-shaped plate; 703, first transmission wheel; 704, second transmission wheel. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0048] The following describes an embodiment of the present invention based on its overall structure.

[0049] Example

[0050] See also Figure 1-4 As shown, a method for heat treatment of element homogenization of a single crystal high-temperature alloy containing Ru element comprises the following steps:

[0051] Step 1: Clamping and preheating: Place the nickel-based single crystal high-temperature alloy containing Ru on the carrier plate 2 in the vacuum furnace 1, and then manually drive the clamping component 4 in the processing mechanism 3 to clamp the nickel-based single crystal high-temperature alloy containing Ru. The position of the clamping component 4 can be adjusted by the linkage component 7 and the rotating component 6 so as to clamp the single crystal high-temperature alloy according to the shape of the Ru. Close the furnace door 103 and evacuate to a predetermined pressure of 1×10^-3Pa. Set the preheating temperature and heating rate, start the heating program, and slowly increase the temperature by 100°C per hour until the temperature reaches 600°C. Then, keep the temperature according to the thickness of the alloy, and the holding time is 2 minutes per millimeter of thickness.

[0052] The temperature is gradually increased by a staged heating method to reduce thermal stress. During the preheating process, the temperature inside the furnace is monitored by a thermocouple to ensure uniform temperature.

[0053] Step 2: Solution treatment: heating the alloy to 1270°C / 1 hour + 1280°C / 1 hour + 1290°C / 2 hours + 1300°C / 3 hours + 1310°C / 30 hours, and then air cooling, so that the Ru element can be fully dissolved into the matrix to form a uniform solid solution, creating conditions for subsequent aging treatment;

[0054] Step 3: Primary aging treatment: heating the alloy to 1100°C for 4 hours and then air cooling to complete the primary aging process, which can make the precipitated phases evenly distributed in the matrix and further optimize the microstructure of the alloy.

[0055] Step 4: Secondary aging treatment: heat the alloy to 870°C for 8 hours and then air cool it to complete the secondary aging treatment, which can further adjust the microstructure of the alloy and improve its mechanical properties and thermal stability.

[0056] Through the preheating step, the temperature of the nickel-based single crystal high-temperature alloy containing Ru element and the clamping component 4 can be gradually increased, thereby reducing the temperature gradient and reducing the thermal stress and deformation of the workpiece during the heat treatment process;

[0057] At the same time, during the heat treatment process, inert gases such as argon and nitrogen can be selected to prevent oxidation, decarburization or contamination of the alloy surface, ensuring the surface quality and performance after heat treatment;

[0058] It should be noted that in order to be able to work stably in a high-temperature environment, the processing mechanism 3 in the present invention adopts materials with good high-temperature strength, thermal stability and thermal conductivity, such as high-temperature alloys, ceramics, etc., to improve the performance and service life of the clamping device in a high-temperature environment, and the surface of the clamping component 4 is coated, such as spraying a high-temperature anti-oxidation coating, a wear-resistant coating, etc., to improve the high-temperature resistance and wear resistance of the clamping device and reduce damage to the workpiece surface.

[0059] See also Figure 4-9 As shown, the present invention provides an element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru element, comprising:

[0060] Vacuum furnace 1; a carrying plate 2 is provided in the vacuum furnace 1,

[0061] The carrier plate 2 is fixed to the bottom of the vacuum furnace 1 through the support legs 201 and is used to place the single crystal high-temperature alloy workpiece containing Ru element;

[0062] Processing mechanism 3; the processing mechanism 3 includes multiple clamping components 4, multiple protective shells 5, a rotating component 6 and a linkage component 7,

[0063] The clamping components 4 are symmetrically distributed on both sides of the carrier plate 2.

[0064] Each clamping assembly 4 includes: a rotating shaft 401 and a worm 406 fixedly connected thereto, two worm wheels 402 meshing with the worm 406, and a screw rod 4021 passing through the center of each worm wheel 402.

[0065] The moving block 403 is sleeved on the screw rod 4021, and the moving block 403 is connected to the horizontal plate 404 through the vertical block 4031. The end of the horizontal plate 404 is fixed with the clamping plate 405. The clamping plate 405 has a built-in pressure sensor for real-time monitoring of the clamping force.

[0066] The rotating shaft 401 rotates to drive the worm 406 to drive the worm wheel 402 and the screw 4021, so that the clamping plate 405 adapts to the shape of the workpiece to complete the clamping;

[0067] Rotating assembly 6: It is set through the rear end wall of the vacuum furnace 1 and includes a sleeve 601, a shaft 602 and a driving motor 603. The outer wall of the sleeve 601 is fixed with a first sprocket 6011, and the outer wall of the shaft 602 is fixed with a first gear 6021.

[0068] The driving motor 603 is fixed to the outer wall of the vacuum furnace and drives the sleeve 601 to rotate through the transmission chain 605, thereby driving the clamping assembly 4 to adjust its position;

[0069] Linkage assembly 7: includes electric telescopic cylinder 701 and U-shaped plate 702,

[0070] A first transmission wheel 703 and a second transmission wheel 704 are rotatably installed in the U-shaped groove of the U-shaped plate 702, and the first transmission wheel 703 is meshed and connected with the second transmission wheel 704;

[0071] The tooth surface of the first transmission wheel 703 meshes with the tooth surface of the first gear 6021, and the tooth surface of the second transmission wheel 704 meshes with the tooth surface of the second gear 6032;

[0072] The linkage assembly 7 raises and lowers the U-shaped plate 702 through the electric telescopic cylinder 701, switches the meshing state of the first gear 6021 and the second gear 6032, and realizes the synchronous adjustment of the single-sided or double-sided clamping assembly.

[0073] Please refer to Figure 4-9 As shown, the carrying plate 2 is fixed to the interior of the vacuum furnace 1 by four supporting legs 201. A base 101 is fixed below the vacuum furnace 1. A fixing block 104 is welded to the bottom of the side of the base 101 away from the furnace door 103. A vertical plate 105 is fixed to the side wall of the upper surface of the fixing block 104. A control cabinet 102 is provided on one side of the base 101. A control panel 1021 is provided on the top of the outer wall of the control cabinet 102. The control panel 1021 is electrically connected to the drive motor 603 provided in the rotating assembly 6 and the electric telescopic cylinder 701 provided in the linkage assembly 7.

[0074] The processing mechanism 3 consists of two clamping assemblies 4, two protective shells 5, a rotating assembly 6 and a linkage assembly 7. The two clamping assemblies 4 are respectively located on both sides of the carrier plate 2, and the two protective shells 5 cover the outside of the clamping assemblies 4. The rotating assembly 6 is connected to the protective shells 5, and the linkage assembly 7 is arranged between the rotating assembly 6 and the fixed block 104.

[0075] Each clamping assembly 4 includes a rotating shaft 401, one end of the rotating shaft 401 is fixedly connected to a worm 406, and a worm wheel 402 is symmetrically provided below the worm 406. The tooth surfaces of the two worm wheels 402 are meshed with the worm 406, and the centers of the two worm wheels 402 are fixedly penetrated by a screw rod 4021, and the two screw rods 4021 are sleeved with a moving block 403. The upper surfaces of the two moving blocks 403 are fixed with a vertical block 4031, and the top walls of the two vertical blocks 4031 away from the worm wheel 402 are fixed with a horizontal plate 404, and the outer wall of the horizontal plate 404 is fixedly connected to the clamping Plate 405, the clamping plate 405 is symmetrically provided with through-holes 4051, the ends of the two screw rods 4021 pass through the through-holes 4051, the diameters of the two through-holes 4051 are larger than the diameters of the screw rods 4021, and a pressure sensor is embedded in the clamping plate 405. In order to enable the pressure sensor to work stably in a high-temperature environment, the outside is wrapped with a high-temperature resistant material to ensure the accuracy and reliability of data acquisition and extend the service life of the sensor. Temperature sensors are also installed on the clamping plate 405 and the carrying plate 2 to monitor the temperature changes of the workpiece during the heat treatment process;

[0076] The protective shell 5 is sleeved on the outside of the worm 406 and the two worm wheels 402. One end of the two lead screws 4021 is rotatably connected to the inner wall of the protective shell 5. The end of the worm 406 away from the rotating shaft 401 is rotatably connected to the inner wall of the protective shell 5. The other end of the rotating shaft 401 passes through the protective shell 5 and is fixedly connected to the adjusting wheel 4011. The lower surface of the protective shell 5 is symmetrically fixed with arc-shaped support rods 501, and the ends of the two arc-shaped support rods 501 are in contact with the outer wall of the support leg 201.

[0077] When the Ru-containing single crystal high temperature alloy is subjected to element homogenization heat treatment, when the shape of the alloy is regular, there is no need to adjust the position of the clamping assembly 4. After the alloy is placed on the carrier plate 2 in the vacuum furnace 1, the staff manually rotates the adjusting wheel 4011, and the adjusting wheel 4011 drives the worm 406 to rotate through the rotating shaft 401. The worm 406 drives the two meshing worm wheels 402 to rotate. The two worm wheels 402 drive the threaded screw 4021 to rotate, so that the two moving blocks 403 drive the horizontal plate 404 to move through the vertical block 4031. The flat plate 404 drives the clamping plate 405 to approach the alloy, and then the two clamping plates 405 clamp the alloy. The clamping force can be monitored in real time through the pressure sensor, and the data is fed back to the control panel 1021. The temperature sensor monitors the temperature change of the workpiece during the heat treatment process and feeds the data back to the control panel 1021. The control panel 1021 conducts a linkage analysis of the data of the pressure sensor and the temperature sensor, and automatically adjusts the position and force of the clamping assembly 4 according to the thermal expansion characteristics of the workpiece and the set clamping force safety range;

[0078] For example, when the temperature rises and causes the workpiece to expand, and the clamping force exceeds the set upper limit, the control panel 1021 automatically controls the linkage component 7 and the rotating component 6, fine-tunes the position of the clamping component 4, and appropriately relaxes the clamping force; conversely, when the temperature change causes the workpiece to shrink and the clamping force is insufficient, the clamping force is increased to ensure that the workpiece is always stably clamped during the heat treatment process, avoids excessive tightening or loosening due to thermal expansion or contraction, and ensures the quality of the heat treatment.

[0079] When the shape of the alloy is irregular, that is, when it is inconvenient to clamp on both sides, the staff starts the rotating assembly 6 through the control panel 1021. The rotating assembly 6 can drive the protective shell 5 to move through the connecting plate 502, thereby controlling the movement of a connected clamping assembly 4, moving it from one side of the carrier plate 2 to above the carrier plate 2, so as to achieve independent adjustment of one clamping assembly 4. At this time, the clamping assembly 4 is operated to move the clamping plate 405 downward from the top to cooperate with the carrier plate 2 to clamp the alloy.

[0080] When both clamping assemblies 4 need to be adjusted, the staff activates the linkage assembly 7 through the control panel 1021, causing the linkage assembly 7 to move upward, connecting the other clamping assembly 4 with the rotating assembly 6. At this time, when the rotating assembly 6 is working, the two clamping assemblies 4 can be adjusted synchronously, that is, the two clamping assemblies 4 form a certain angle with the carrier plate 2. At this time, the clamping assembly 4 is operated to enable the two clamping plates 405 to clamp the upper oblique part of the alloy.

[0081] After clamping the alloy, the furnace door 103 is closed and vacuum is drawn to a predetermined pressure, and the heating program is started through the control panel 1021 to perform preheating and subsequent heat treatment;

[0082] Therefore, the present application can effectively solve the problem of unstable clamping of irregularly shaped workpieces, improve the heat treatment effect and production efficiency, ensure that the workpiece is heated evenly during the heat treatment process, avoid uneven element distribution caused by deformation or displacement of the workpiece, and improve the overall performance of the alloy.

[0083] See also Figure 4-8 As shown, the rotating assembly 6 includes a sleeve 601 and a shaft 602 provided therein. The sleeve 601 extends through the rear end wall of the vacuum furnace 1 to the outside. The outer walls of the sleeve 601 and the shaft 602 are respectively fixed with a first sprocket 6011 and a first gear 6021. The top outer wall of the vertical plate 105 is fixedly mounted with a driving motor 603 by screws. The output end of the driving motor 603 is rotatably connected to the rear end outer wall of the vacuum furnace 1. The outer wall of the output end of the driving motor 603 is fixed with a second sprocket 6031 and a second gear 603 in sequence. 2. The second sprocket 6031 is connected to the first sprocket 6011 via a transmission chain 605. The length of the shaft 602 is greater than that of the sleeve 601. The outer wall of the shaft 602 is in contact with the inner wall of the sleeve 601 and is rotationally connected. The outer walls of the sleeve 601 and the shaft 602 located inside the furnace are respectively fixed with a first sector plate 604 and a second sector plate 606. The two protective shells 5 are fixed with connecting plates 502 on the side away from the furnace door 103. The two connecting plates 502 are respectively fixed to the first sector plate 604 and the second sector plate 606.

[0084] The linkage assembly 7 includes an electric telescopic cylinder 701 and a U-shaped plate 702. The electric telescopic cylinder 701 is fixedly mounted on the upper surface of the fixed block 104 by screws. The U-shaped plate 702 is fixedly mounted on the telescopic end of the electric telescopic cylinder 701 by screws. A first transmission wheel 703 and a second transmission wheel 704 are rotatably mounted in the U-shaped groove of the U-shaped plate 702. The first transmission wheel 703 is meshed with the second transmission wheel 704. The tooth surface of the first transmission wheel 703 is meshed with the tooth surface of the first gear 6021, and the tooth surface of the second transmission wheel 704 is meshed with the tooth surface of the second gear 6032.

[0085] When adjusting the clamping assembly 4, the control panel 1021 starts the drive motor 603, the output end of the drive motor 603 rotates and drives the second sprocket 6031 and the second gear 6032 to rotate, the second sprocket 6031 drives the first sprocket 6011 to rotate through the transmission chain 605, the first sprocket 6011 drives the sleeve 601 to rotate, the sleeve 601 drives the installed first sector plate 604 to rotate, the first sector plate 604 drives the protective shell 5 to rotate through the connecting plate 502, and the protective shell 5 drives the internal clamping assembly 4 to rotate, completing the adjustment of the clamping assembly 4. It should be noted that the control panel 1021 can set the rotation angle;

[0086] When the two clamping assemblies 4 need to be adjusted synchronously, the electric telescopic cylinder 701 is first started through the control panel 1021. The telescopic end of the electric telescopic cylinder 701 pushes the U-shaped plate 702 upward, and the U-shaped plate 702 drives the first transmission wheel 703 and the second transmission wheel 704 to move upward. The first transmission wheel 703 is engaged with the first gear 6021, and the second transmission wheel 704 is engaged with the second gear 6032. Then the above-mentioned adjustment operation is performed. At this time, the second gear 6032 on the output end of the driving motor 603 drives the engaged second transmission wheel 704 to rotate, and the second transmission wheel 704 drives the first transmission wheel 703 to rotate, and the first transmission wheel 703 drives the engaged first gear 6021 to rotate. The rotating first gear 6021 drives the inserted shaft 602 to rotate, and the shaft 602 drives the second sector plate 606 to rotate, thereby automatically controlling and adjusting the position of a single or two clamping assemblies 4, reducing manual operation, reducing labor intensity, and improving the safety and convenience of operation.

[0087] The working principle of the present invention is:

[0088] When performing element homogenization heat treatment on a single crystal high-temperature alloy containing Ru, when the shape of the alloy is regular, there is no need to adjust the position of the clamping assembly 4. After placing the alloy on the supporting plate 2 in the vacuum furnace 1, the staff manually rotates the adjusting wheel 4011. The adjusting wheel 4011 drives the worm 406 to rotate through the rotating shaft 401. The worm 406 drives the two meshing worm wheels 402 to rotate. The two worm wheels 402 drive the threaded screw 4021 to rotate, so that the two moving blocks 403 drive the horizontal plate 404 to move through the vertical block 4031. The horizontal plate 404 drives the clamping plate 405 to approach the alloy, and then the two clamping plates 405 clamp the alloy. The clamping force can be monitored by the pressure sensor to complete the clamping of the alloy with a regular shape.

[0089] When the shape of the alloy is irregular, that is, when it is inconvenient to clamp on both sides, the staff starts the drive motor 603 through the control panel, and the output end of the drive motor 603 rotates and drives the second sprocket 6031 and the second gear 6032 to rotate, and the second sprocket 6031 drives the first sprocket 6011 to rotate through the transmission chain 605, and the first sprocket 6011 drives the sleeve 601 to rotate, and the sleeve 601 drives the installed first sector plate 604 to rotate, and the first sector plate 604 drives the protective shell 5 to rotate through the connecting plate 502, and the protective shell 5 drives the internal clamping assembly 4 to rotate, and moves from one side of the carrier plate 2 to above the carrier plate 2. At this time, the clamping assembly 4 is operated to make the clamping plate 405 move downward from directly above to cooperate with the carrier plate 2 to clamp the alloy;

[0090] When the two clamping assemblies 4 need to be adjusted synchronously, the electric telescopic cylinder 701 is first started through the control panel 1021. The telescopic end of the electric telescopic cylinder 701 pushes the U-shaped plate 702 to move upward, and the U-shaped plate 702 drives the first transmission wheel 703 and the second transmission wheel 704 to move upward. The first transmission wheel 703 is meshed with the first gear 6021, and the second transmission wheel 704 is meshed with the second gear 6032. Then, the above adjustment operation is performed, and at this time, the second gear 6032 on the output end of the drive motor 603 drives the meshing wheel 703 to move upward. The engaged second transmission wheel 704 rotates, the second transmission wheel 704 drives the first transmission wheel 703 to rotate, the first transmission wheel 703 drives the meshed first gear 6021 to rotate, the rotating first gear 6021 drives the inserted shaft 602 to rotate, the shaft 602 drives the second sector plate 606 to rotate, so that the two clamping assemblies 4 can be adjusted synchronously, that is, the two clamping assemblies 4 form a certain angle with the carrier plate 2. At this time, operating the clamping assemblies 4 can enable the two clamping plates 405 to clamp the upper oblique part of the alloy.

[0091] After the alloy is clamped, the furnace door 103 is closed and vacuum is drawn to a predetermined pressure, and the heating program is started through the control panel 1021 to perform preheating and subsequent heat treatment.

[0092] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru, characterized in that: include: A vacuum furnace (1); a carrying plate (2) is provided in the vacuum furnace (1), The carrier plate (2) is fixed to the bottom of the vacuum furnace (1) via support legs (201) and is used to place a single crystal high-temperature alloy workpiece containing Ru elements; The processing mechanism (3) includes a plurality of clamping components (4), a plurality of protective shells (5), a rotating component (6) and a linkage component (7). The clamping components (4) are symmetrically distributed on both sides of the carrying plate (2). Each clamping assembly (4) comprises: a rotating shaft (401) and a worm (406) fixedly connected thereto, two worm wheels (402) meshing with the worm (406), and a screw (4021) passing through the center of each worm wheel (402). The moving block (403) is sleeved on the screw rod (4021), and the moving block (403) is connected to the horizontal plate (404) through the vertical block (4031). The end of the horizontal plate (404) is fixed with a clamping plate (405). The clamping plate (405) is embedded with a pressure sensor for real-time monitoring of the clamping force. The rotating shaft (401) rotates to drive the worm (406) to drive the worm wheel (402) and the screw (4021), so that the clamping plate (405) adapts to the shape of the workpiece to complete the clamping; The rotating assembly (6) is arranged through the rear end wall of the vacuum furnace (1), and includes a sleeve (601), a shaft (602) and a driving motor (603). The outer wall of the sleeve (601) is fixed with a first sprocket (6011), and the outer wall of the shaft (602) is fixed with a first gear (6021). The driving motor (603) is fixed to the outer wall of the vacuum furnace, and drives the sleeve (601) to rotate through the transmission chain (605), thereby driving the clamping assembly (4) to adjust its position; Linkage assembly (7): including electric telescopic cylinder (701) and U-shaped plate (702), A first transmission wheel (703) and a second transmission wheel (704) are rotatably mounted in the U-shaped groove of the U-shaped plate (702), and the first transmission wheel (703) is meshedly connected with the second transmission wheel (704); The tooth surface of the first transmission wheel (703) meshes with the tooth surface of the first gear (6021), and the tooth surface of the second transmission wheel (704) meshes with the tooth surface of the second gear (6032); The linkage assembly (7) raises and lowers the U-shaped plate (702) via the electric telescopic cylinder (701), switches the meshing state of the first gear (6021) and the second gear (6032), and realizes synchronous adjustment of the single-sided or double-sided clamping assembly.

2. The element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru according to claim 1, characterized in that: A control unit is provided in a control cabinet (102) outside the vacuum furnace (1). A control panel (1021) of the control cabinet (102) is electrically connected to a drive motor (603), an electric telescopic cylinder (701) and a pressure sensor for automatically adjusting the clamping position and force. The control unit can dynamically adjust the clamping force and position according to pressure sensor feedback and preset parameters; the control cabinet (102) is arranged on one side of the bottom of the vacuum furnace, and a control panel (1021) is provided on the top of the outer wall of the control cabinet (102).

3. The element homogenization heat treatment device for a Ru-containing single crystal high-temperature alloy according to claim 1 or 2, characterized in that: A base (101) is fixed below the vacuum furnace (1), a fixed block (104) is fixed to the bottom of a side of the base (101) away from the furnace door (103), a vertical plate (105) is fixed to the side wall of the upper surface of the fixed block (104), and the linkage assembly (7) is arranged between the rotating assembly (6) and the fixed block (104).

4. The element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru according to claim 1, characterized in that: The processing mechanism (3) comprises two protective shells (5) corresponding to two clamping components (4); the two protective shells (5) cover the outside of the clamping components (4), and the rotating component (6) is connected to the protective shells (5).

5. The element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru according to claim 1 or 4, characterized in that: The sleeve (601) passes through the rear end wall of the vacuum furnace (1) and extends to the outside; a driving motor (603) is fixedly installed on the top outer wall of the vertical plate (105) by screws, and the output end of the driving motor (603) is rotatably connected to the rear end outer wall of the vacuum furnace (1); a second sprocket (6031) and a second gear (6032) are fixedly sleeved on the outer wall of the output end of the driving motor (603) in sequence, and the second sprocket (6031) is connected to the first sprocket (6011) through a transmission chain (605); The length of the shaft (602) is greater than the length of the sleeve (601), the outer wall of the shaft (602) contacts the inner wall of the sleeve (601) and is rotatably connected, the outer walls of the sleeve (601) and the shaft (602) located in the furnace are respectively fixed with a first fan-shaped plate (604) and a second fan-shaped plate (606), and the side of the protective shell (5) away from the furnace door (103) is fixed with a connecting plate (502), and the two connecting plates (502) are respectively fixedly connected to the first fan-shaped plate (604) and the second fan-shaped plate (606).

6. The element homogenization heat treatment device for a single crystal high-temperature alloy containing Ru according to claim 5, characterized in that: The linkage assembly (7) comprises an electric telescopic cylinder (701) and a U-shaped plate (702); the electric telescopic cylinder (701) is fixedly mounted on the upper surface of a fixed block (104) by means of screws; and the U-shaped plate (702) is fixedly mounted on the telescopic end of the electric telescopic cylinder (701) by means of screws.

7. The element homogenization heat treatment device for a Ru-containing single crystal high-temperature alloy according to claim 1 or 4, characterized in that: One end of the rotating shaft (401) is fixedly connected to a worm (406), and a worm wheel (402) is symmetrically provided below the worm (406). The tooth surfaces of the two worm wheels (402) are meshed with the worm (406), and a screw rod (4021) is fixedly passed through the center of the two worm wheels (402). The two screw rods (4021) are sleeved with a moving block (403). The upper surfaces of the two moving blocks (403) are fixed with a vertical block (4031). The top walls of the two vertical blocks (4031) away from the worm wheel (402) are fixed with a horizontal plate (404), and the outer wall of the horizontal plate (404) is fixedly connected to a clamping plate (405). The clamping plate (405) is symmetrically provided with through holes (4051), the ends of the two screw rods (4021) pass through the through holes (4051), the diameters of the two through holes (4051) are larger than the diameters of the screw rods (4021), and a pressure sensor is embedded in the interior of the clamping plate (405).

8. The element homogenization heat treatment device for a Ru-containing single crystal high-temperature alloy according to claim 1, characterized in that: The protective shell (5) is sleeved on the outside of the worm (406) and the two worm wheels (402); one end of the two lead screws (4021) is rotatably connected to the inner wall of the protective shell (5); one end of the worm (406) away from the rotating shaft (401) is rotatably connected to the inner wall of the protective shell (5); the other end of the rotating shaft (401) passes through the protective shell (5) and is fixedly connected to an adjusting wheel (4011); arc-shaped support rods (501) are symmetrically fixed to the lower surface of the protective shell (5); and the ends of the two arc-shaped support rods (501) are in contact with the outer wall of the support leg (201).

9. A method for element homogenization heat treatment of a Ru-containing single crystal high-temperature alloy based on the apparatus according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: clamping and preheating. A nickel-based single crystal high-temperature alloy containing Ru is placed on a carrier plate (2) in a vacuum furnace (1). A clamping assembly (4) is driven to clamp the nickel-based single crystal high-temperature alloy containing Ru. The furnace door (103) is closed and vacuumed to a predetermined pressure. The preheating temperature and heating rate are set. A heating program is started. A slow heating method is used. The temperature is increased by 100° C. per hour until the temperature reaches 600° C., and then the temperature is kept warm according to the thickness of the alloy. Step 2: Solution treatment: heat the alloy to 1270°C / 1 hour + 1280°C / 1 hour + 1290°C / 2 hours + 1300°C / 3 hours + 1310°C / 30 hours, and air cool. Step 3: Primary aging treatment: heat the alloy to 1100°C for 4 hours and air cool to complete the primary aging. Step 4: Secondary aging treatment: reheat to 870°C for 8 hours, then air cool to complete the secondary aging.

10. The element homogenization heat treatment method for a Ru-containing single crystal high-temperature alloy according to claim 9, characterized in that: The holding time in step 1 is 2 minutes per millimeter of thickness, the predetermined pressure is 1×10^-3Pa, and the position of the clamping component (4) is adjusted by the linkage component (7) and the rotating component (6) so as to clamp the single crystal high-temperature alloy containing Ru element according to its shape.

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