Local rolling forming method for high-temperature alloy gradient structure dual-performance disc and disc

Abstract

The invention discloses a local rolling forming method for a high-temperature alloy gradient structure dual-performance disc and the disc. The two sides of the disc piece are provided with annular groove structures stretching across the disc center to the disc edge partial area. The forming method comprises the steps that a high-temperature alloy disc blank is installed to a mandrel of a clamping part to rotate at the constant speed; the high-temperature alloy disc blank is heated, a disc center area of the high-temperature alloy disc blank is cooled, the temperature of the high-temperature alloy disc blank is formed, and a high-temperature alloy rolling forming temperature gradient interval is kept; according to the thickness of the high-temperature alloy disc blank, the first deformation ratio and the second deformation ratio, the first axial pressing amount of each pass of rolling in the disc center area and the second axial pressing amount of each pass of rolling in the disc edge area are set, the two sides of the high-temperature alloy disc blank are rolled outwards in the radial direction of the disc center area from the specific position of the disc center area in sequence, and a disc piece is formed; and carrying out water cooling treatment on the heat-treated disc to room temperature. According to the invention, the purpose of accurately controlling the crystal double-organization structure in the integral forming of the high-temperature alloy with lower production cost and manufacturing period can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of manufacturing high-end aviation difficult-to-deform metal equipment, and specifically to a method for local rolling forming of a high-temperature alloy gradient structure dual-performance disk and a disk. Background Art

[0002] The rapid development of the aviation industry has led to a continuous increase in the thrust-to-weight ratio of aircraft engines. The turbine disk, a key component inside a high thrust-to-weight ratio aircraft engine, needs to serve at a higher temperature. The working and service conditions of the hot end components of the engine are becoming more and more harsh, which puts forward new requirements for materials and structures that meet high-temperature service performance. Nickel-based high-temperature alloys have the advantages of high temperature resistance, high stability, and good thermal corrosion resistance, and have become one of the preferred materials for turbine disks of active aircraft engines. The actual service environment of the turbine disk is complex. Specifically, the working temperature at the center of the turbine disk is relatively low, and it needs to withstand the huge torsional effect caused by high-speed rotation. This part is required to have a fine-grained structure to ensure good tensile strength and fatigue resistance; while the working temperature at the edge of the disk is higher than that at the center of the disk, and this part needs to be a coarse-grained structure to ensure high-temperature durability, creep and fatigue crack growth resistance. Nickel-based high-temperature alloys are difficult-to-deform metal materials, and have high requirements for forming processes, technologies and equipment. At the same time, the turbine disk parts need to have a dual-organization performance structure, which makes the control of the deformation temperature range, the requirements of the forming mold, and the limitations of large-tonnage equipment become the difficulties in its forming and manufacturing.

[0003] For high-temperature alloy dual-performance disc parts, most of the current forming processes and methods using integral die forging + double heat treatment require large forming loads, high requirements for dies, large transitional tissue intervals, and poor tissue uniformity. For example, in the invention with publication number CN116251924A, an isothermal forging method for nickel-based high-temperature alloys is provided, wherein 3D printing blank making combined with the first pre-forging may result in uneven tissue, the forging die needs to be replaced between the first forging and the second forging, and solid solution + aging heat treatment is required after forging. The process is complex and the cycle is long, and the mold cost and requirements are high; in the invention with publication number CN108515132A, a method for hot die forging + heat treatment of nickel-based high-temperature alloys is proposed, wherein the disc blank is pre-forged, then simultaneously aged at different temperatures, and then final forging and final heat treatment are performed, wherein the forging die needs to be replaced for pre-forging and final forging, and the intermediate aging + final heat treatment The processing cycle is long, the required forming tonnage is large, the mold cost is high, and the forming cycle is long; in the invention with publication number CN115125382A, a device for providing heat treatment for powder high-temperature alloy dual-performance turbine disks is proposed. Its main invention focuses on the structure and function of the device, while the heat treatment process and parameters of the powder high-temperature alloy disk are not mentioned; in the invention with publication number CN114160796A, the nickel-based powder high-temperature alloy turbine disk is subjected to solution heat treatment + sub-solution heat treatment and aging heat treatment, so that the core, hub and rim of the turbine disk have different microstructures and mechanical properties, which is aimed at forged nickel-based powder high-temperature alloy turbine disks, and the deformation process and parameters of the turbine disk are not mentioned.

[0004] Therefore, how to accurately control the dual structure in the integral forming of high-temperature alloy disc parts and reduce the production cost and manufacturing cycle as much as possible is the key issue that needs to be solved urgently. Summary of the invention

[0005] In view of this, the main purpose of this application is to provide a local rolling forming method and disk of a high-temperature alloy gradient structure dual-performance disk, which is conducive to achieving the purpose of accurately controlling the crystal dual-structure in the one-piece forming of the high-temperature alloy with lower production cost and manufacturing cycle.

[0006] In a first aspect, the present application provides a local rolling forming method for a high-temperature alloy gradient structure dual-performance disk, wherein both sides of the high-temperature alloy gradient structure dual-performance disk have an annular groove structure spanning a portion of the disk center to the disk edge, and the forming method comprises:

[0007] Install the high-temperature alloy disc blank to the mandrel of the clamping part, and rotate the high-temperature alloy disc blank at a uniform speed through the mandrel;

[0008] The high temperature alloy disc blank is heated, and the center area of ​​the high temperature alloy disc blank is cooled at the same time, and the temperature of the high temperature alloy disc blank from the center area to the edge area is formed and maintained in the high temperature alloy rolling forming temperature gradient range, wherein the high temperature alloy rolling forming temperature gradient range is 935°C ± 10°C to 1080°C ± 10°C;

[0009] According to the thickness of the high-temperature alloy disc blank, the first deformation ratio and the second deformation ratio, the first axial pressing amount in the disc center area and the second axial pressing amount in the disc edge area are set for each rolling process, wherein the value range of the first deformation ratio is 16% to 23.5%, and the value range of the second deformation ratio is 8% to 13.3%;

[0010] According to the first axial downward pressure and the corresponding first rolling head speed, the second axial downward pressure and the corresponding second rolling head speed, the two sides of the high-temperature alloy disc blank are rolled in sequence from the specific position of the disc center area along the radial outward movement to form a high-temperature alloy gradient structure dual-performance disc with an annular groove structure, wherein the first rolling head speed is 4r / min, and the second rolling head speed is 3r / min;

[0011] According to the preset heat treatment temperature and holding time, the high-temperature alloy gradient structure dual-performance disk is heat treated, and the heat-treated high-temperature alloy gradient structure dual-performance disk is water-cooled to room temperature, wherein the preset heat treatment temperature is 975°C and the holding time is 50 minutes.

[0012] As described above, the uniform rotation of the high-temperature alloy disc billet can make the high-temperature alloy disc billet heated evenly. While heating the high-temperature alloy disc billet, the center area of ​​the high-temperature alloy disc billet is forced to be water-cooled to ensure that the temperature distribution during the heating and cooling processes is more uniform. After a period of time, the high-temperature alloy rolling forming temperature gradient range is obtained, which can accurately control the microstructural evolution of the high-temperature alloy and maintain product performance. In this temperature gradient range, the corresponding axial downward pressure and rolling head speed are set for the center area of ​​the high-temperature alloy disc billet to the transition area to the disc edge area, and the high-temperature alloy disc billet is gradually moved outward along the radial direction from the center area of ​​the disc to the outer edge area. The shapes between the three regions are rolled separately to obtain a high-temperature alloy gradient microstructure dual-performance disc with a ring groove structure, ensuring precise control of the deformation process; heat treatment of the high-temperature alloy gradient microstructure dual-performance disc at 975°C can dissolve the precipitated phase in the high-temperature alloy back into the matrix, eliminate lattice distortion and stress concentration, improve the microstructure of the high-temperature alloy, and ensure the homogeneity of the grain size in each region; the holding time of 50 minutes is helpful to control the stable microstructure and mechanical properties of the high-temperature alloy gradient microstructure dual-performance disc, and improves production efficiency by precisely controlling the time.

[0013] Optionally, according to the first axial downward pressure and the corresponding first rolling head speed, the second axial downward pressure and the corresponding second rolling head speed, rolling is performed sequentially from a specific position of the disk center area along the radial direction outward, further comprising:

[0014] According to the first axial downward pressure and the first rolling head speed, rolling is performed from the center area to the transition area on both sides of the high-temperature alloy disc blank;

[0015] According to the second axial downward pressure and the second rolling head speed, the disk edge areas on both sides of the high-temperature alloy disk blank are rolled.

[0016] From the above, by setting precise axial downward pressure and rolling head speed in different areas of the high-temperature alloy disc blank, not only can the mechanical properties be optimized by area, but also the plastic deformation of each part of the high-temperature alloy disc blank from the disc center area to the disc edge area can be ensured to be more uniform, thereby reducing the generation of waste and reducing manufacturing costs.

[0017] Optionally, the first axial downward pressing amount is equal to half of the product of the thickness of the high-temperature alloy disc blank and the first deformation ratio, wherein the thinner the thickness of the high-temperature alloy disc blank is, the larger the value of the first deformation ratio is.

[0018] From the above, the first deformation ratio of the center area of ​​the high-temperature alloy disc blank is determined according to the initial thickness of the high-temperature alloy disc blank; if the initial thickness of the high-temperature alloy disc blank used is thicker, the first deformation ratio will be larger to ensure the optimal forming effect of high-temperature alloy disc blanks of different specifications.

[0019] Optionally, the second axial downward pressing amount is equal to half of the product of the thickness of the high-temperature alloy disc blank and the second deformation ratio, wherein the thinner the thickness of the high-temperature alloy disc blank is, the larger the value of the second deformation ratio is.

[0020] From the above, the second deformation ratio of the edge area of ​​the high-temperature alloy disc blank is determined according to the initial thickness of the high-temperature alloy disc blank; if the initial thickness of the high-temperature alloy disc blank used is thicker, the second deformation ratio will be larger to ensure the optimal forming effect of high-temperature alloy disc blanks of different specifications.

[0021] Optionally, the high temperature alloy disc blank is mounted on a mandrel of the clamping portion, and the high temperature alloy disc blank is rotated at a uniform speed by the mandrel, further comprising:

[0022] Two mandrels clamp the inner hole of the high-temperature alloy disc blank, and an induction heating coil is arranged at both ends of the diameter of the high-temperature alloy disc blank from the disc edge to the disc center, and a space matching the width of the rolling head is reserved between the two induction heating coils;

[0023] According to the preset downward pressure and the preset rolling head speed, multiple rolling heads attached to both sides of the high-temperature alloy disc are started to rotate, driving the high-temperature alloy disc to rotate at a uniform speed inside the induction heating coil. The preset downward pressure is 1mm, and the preset rolling head speed is 2r / min.

[0024] From the above, the two mandrels can servo feed and withdraw, which is convenient for installing the high-temperature alloy disc blank. The inner hole of the disc center of the high-temperature alloy disc blank can be used for the mandrel to penetrate, and the mandrel plays a supporting and clamping role; induction heating coils are installed on the upper and lower ends of the high-temperature alloy disc blank respectively. The induction heating coil is similar to an arc-shaped shell, and the upper and lower semicircles of the high-temperature alloy disc blank can be placed therein respectively. After the induction heating coils at both ends are installed, space with the width of the rolling head will be leaked, which is convenient for the rolling head to rotate and press down, and the two do not interfere with each other; the rotation of the rolling head can drive the high-temperature alloy disc blank to rotate for uniform heating.

[0025] Optionally, the two mandrels clamp the inner hole of the disk center of the high-temperature alloy disk blank, and further include:

[0026] The front ends of the two mandrels respectively pass through the inner holes of the disk center of the high-temperature alloy disk blank, wherein the interior of the mandrel is hollow and a rotary joint is inserted therein, and the rotary joint is externally connected to a water cooling system.

[0027] As above, cooling water enters the core shaft from the water inlet of the rotary joint, so that the temperature of the front end of the core shaft is reduced, and the heat of the high-temperature alloy disc blank is exchanged through the inner hole of the center of the disc clamped by the front end of the core shaft, and the return water that takes away the heat of the center area of ​​the high-temperature alloy disc blank returns to the water tank of the water cooling system from the water return port of the rotary joint, and the reciprocating cycle realizes the forced cooling of the center area of ​​the high-temperature alloy disc blank; in addition, by adjusting the water pressure of the cooling system, the cooling effect of the center area can be adjusted, and the temperature of the center area can be controlled to be lower than its grain growth temperature.

[0028] Optionally, heating the high-temperature alloy disk blank and cooling the disk center area of ​​the high-temperature alloy disk blank at the same time, waiting for the temperature of the high-temperature alloy disk blank from the disk center area to the disk edge area to form and maintain the high-temperature alloy rolling forming temperature gradient interval, further comprising:

[0029] Adjust the positions of the infrared temperature measuring devices at the center and edge of the high-temperature alloy disk, and start the induction heating power supply and water cooling system;

[0030] The temperature of the high-temperature alloy disk blank from the disk center area to the disk edge area is detected in real time by the infrared temperature measuring device. After the temperature of the disk center area reaches a first preset temperature, the induction heating power and the water pressure of the water cooling system are adjusted so that the temperature of the high-temperature alloy disk blank is kept warm for a preset time, wherein the first preset temperature is 800°C;

[0031] The induction heating power and the water pressure of the water cooling system are adjusted to heat the high-temperature alloy disc again. After the temperature of the disc center area reaches the second preset temperature, the induction heating power and the water pressure of the water cooling system are adjusted again. After the temperature of the high-temperature alloy disc is kept warm for a preset time, the temperature of the high-temperature alloy disc in the disc center area is 935°C±10°C, and the temperature of the disc edge area is 1080°C±10°C. Thus, a high-temperature alloy rolling forming temperature gradient range is formed, in which the second preset temperature is 935°C.

[0032] As shown above, the high-temperature alloy disc rotates in the upper and lower induction heating coils. The farther outward the high-temperature alloy disc moves radially, the longer it is heated and the higher its temperature is. As a result, a temperature gradient gradually decreases from the outside to the inside of the high-temperature alloy disc along the radial direction. By measuring the temperature of a certain point of the high-temperature alloy disc and adjusting the induction heating power and the water pressure of the water cooling system by PID, the temperature gradient range from the center area of ​​the disc to the edge area of ​​the disc can be controlled and maintained.

[0033] In a second aspect, the present application further provides a rolling forming device for high-temperature alloy gradient structure dual-performance disc parts, which includes: a clamping part, which includes two mandrels, and the two mandrels are fixedly clamped at the inner holes of the disc center on both sides of the high-temperature alloy disc blank;

[0034] The induction heating part includes two induction heating coils, which are arranged at both ends of the diameter of the high-temperature alloy disc blank, from the disc edge to the disc center, and a space matching the width of the rolling head is reserved between the two induction heating coils;

[0035] The water cooling part of the disk core includes two rotary joints, which are assembled inside the two core shafts. The rotary joints are provided with cold water pipes and return water pipes, wherein the cold water pipes and return water pipes are externally connected to the water cooling system;

[0036] The temperature measuring part includes two infrared temperature measuring devices, which are respectively arranged in the center area and the edge area of ​​the high-temperature alloy disk blank;

[0037] The rolling head moving part includes four rolling heads, a rotating motor connected to each rolling head, an axial feeding device and a radial feeding device. Every two rolling heads are respectively arranged on both sides of the center of the high-temperature alloy disc blank on both sides. The rolling heads roll the high-temperature alloy disc blank from the center area to the edge area of ​​the disc through the rotating motor, the axial feeding device and the radial feeding device.

[0038] As shown above, the high-temperature alloy disc blank is heated from the disc edge to the disc center by the induction heating part, forming a temperature gradient with the temperature gradually decreasing from the disc edge to the disc center, and the disc center area of ​​the high-temperature alloy disc blank is forced to be water-cooled by the disc center water cooling part. Through the real-time temperature measurement of the temperature measuring part, the PID adjustment of the induction heating power and the water pressure of the water cooling system are adjusted to stably maintain the temperature gradient range of the high-temperature alloy disc blank between 850℃±10℃~1000℃±10℃; under the active rotation, downward pressure and feeding of the rolling head, different shapes and structures are rolled out; the equipment relies on a near-net labor-saving forming method, which can reduce the forming load and processing cost, does not need to change the mold, and has high production efficiency.

[0039] Optionally, a mandrel feeding portion includes a clamp and a motor for controlling the feeding and withdrawal of the mandrel.

[0040] From the above, the mandrel servo feeding and exiting are controlled by the clamp and the motor, which improves the automation level and further improves the production efficiency.

[0041] In the third aspect, the present application also provides a high-temperature alloy gradient structure dual-performance disk for aviation, which is rolled using any of the high-temperature alloy gradient structure dual-performance disk local rolling forming methods described in the first aspect and any of the equipment described in the second aspect to form a high-temperature alloy gradient structure dual-performance disk having an annular groove structure spanning a partial area from the center of the disk to the edge of the disk.

[0042] From the above, the high-temperature alloy gradient structure dual-performance disk has a specific annular groove shape, and the center area of ​​the high-temperature alloy gradient structure dual-performance disk has an equiaxed fine-grained structure, which can ensure good tensile strength and fatigue resistance; and its edge area is a coarse-grained structure, which can ensure that it has high-temperature durability, creep and fatigue crack growth resistance. The high-temperature alloy gradient structure dual-performance disk has a good gradient structure and is widely used in turbine disks, which are key components inside aircraft engines.

[0043] In summary, the local rolling forming method and disk of the high-temperature alloy gradient organization dual-performance disk provided by the present application have a specific shape, a uniform distribution of crystal gradient organization, and have the advantages of high temperature resistance, high stability, and good thermal corrosion resistance. The rolling forming method of the high-temperature alloy gradient organization dual-performance disk adopts local rolling forming and temperature gradient control to realize the forming and control of its dual-organization structure. The local rolling forming can form different shape structures through the active rotation and downward pressure of the rolling head; the temperature gradient of the high-temperature alloy gradient organization dual-performance disk along its radial direction (935℃± The establishment and maintenance of the temperature range of 10℃~1080℃±10℃) is ensured by the combined effect of induction heating from the disk edge area to the disk center area and forced water cooling measures taken in the disk center area; based on the organization refinement mechanism of dynamic recrystallization and static recrystallization in the disk center area, and the coarse grain control mechanism of dynamic grain growth and static grain growth during small deformation and waiting for temperature in the disk edge area, the temperature, deformation amount and deformation rate are simultaneously controlled during the forming process of the high-temperature alloy gradient organization dual-performance disk to achieve the purpose of accurately controlling the generation of its dual organization; and the equipment can reduce the forming load and processing cost, does not need to replace the mold, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The various technical features of the present application and the relationship between them are further explained below with reference to the accompanying drawings. The accompanying drawings are exemplary, and some technical features are not shown in actual proportion. In addition, some drawings may omit technical features that are commonly used in the technical field to which the present application belongs and are not essential for understanding and implementing the present application, or additional technical features that are not essential for understanding and implementing the present application may be shown. In other words, the combination of the various technical features shown in the accompanying drawings is not used to limit the present application. In addition, throughout the present application, the same figure numbers refer to the same content. The specific description of the drawings is as follows:

[0045] Figure 1 It is a partial view of a rolling forming device for high-temperature alloy gradient structure dual-performance disk in the present application;

[0046] Figure 2 It is a flow chart of a local rolling forming method of a high-temperature alloy gradient structure dual-performance disk in the present application;

[0047] Figure 3a-3b This is a step-by-step rolling structure diagram of a high-temperature alloy gradient structure dual-performance disc for aviation in this application;

[0048] Figure 4a-4c It is a crystal organization diagram of a high temperature alloy gradient organization dual performance disk obtained using the parameters listed in this application;

[0049] Figure 5 It is a temperature gradient interval diagram of the high-temperature alloy rolling forming formed by the high-temperature alloy gradient structure dual-performance disk in this application during induction heating.

[0050] Description of Reference Numerals

[0051] 1-lower induction heating coil; 2-rolling head a; 3-rolling head b; 4-right mandrel; 5-high-temperature alloy disc; 6-upper induction heating coil; 7-rolling head c; 8-rolling head d; 9-left mandrel; 10-water inlet of left rotary joint; 11-water outlet of left rotary joint; 12-water inlet of right rotary joint; 13-water outlet of right rotary joint. In the figure, D represents diameter, H represents thickness, and T represents temperature.

[0052] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present application.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0055] It should be noted that in the description of this article, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0056] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0057] The present application proposes a forming method of local rolling forming and temperature gradient control for high-temperature alloy gradient microstructure dual-performance disk parts, and realizes the temperature gradient distribution of the high-temperature alloy gradient microstructure dual-performance disk parts along the radial direction by controlling the induction heating from the disk edge area to the disk center area and the forced water cooling of the disk center area. Based on the microstructure refinement mechanism of dynamic recrystallization and static recrystallization in the disk center area, and the coarse grain control mechanism of dynamic grain growth and static grain growth during small deformation and waiting for temperature in the disk edge area, the axial downward pressure and the rotation speed of the rolling head in each rolling forming pass are controlled to integrally form the dual-structure performance disk parts, and different microstructure morphologies are obtained by using high-temperature alloys under different deformation temperatures, deformation amounts and deformation rate parameters, including low temperature-high strain rate-large deformation amount and high temperature-low strain rate-small deformation amount, so that a fine-grained microstructure with a grain size of 7-10 in the disk center and a coarse-grained microstructure with a grain size of 3-5 in the disk edge can be obtained, which has good formability and mechanical properties. The above method can realize the forming of two different organizational forms under deformation of the disk, with an appropriate temperature field gradient difference in the intermediate transition zone, a small transition interval, good organizational uniformity, and no abnormal grain growth and mixed crystal distribution. Compared with the technical solutions of overall-local isothermal forging of the disk, integrated hot die forging-heat treatment, and segmented solid solution-aging heat treatment of single-organization disk blanks, it solves the problems of multi-process, multi-pass organizational inheritance, high organizational instability in the large transition interval, and difficult organizational regulation.

[0058] [Specific embodiment of the rolling forming equipment for high temperature alloy gradient structure dual performance disc]

[0059] The rolling forming equipment used in the present application for high-temperature alloy gradient structure dual-performance disk parts includes a clamping part, an induction heating part, a disk core water cooling part, a temperature measuring part, a rolling head moving part and a core shaft feeding part.

[0060] The clamping part includes two mandrels, left and right. Figure 1 As shown, the left mandrel 9 and the right mandrel 4 are respectively fixedly clamped at the inner holes of the disk center on both sides of the high-temperature alloy disk blank 5, and the left mandrel 9 and the right mandrel 4 support and clamp the high-temperature alloy disk blank 5, and the left mandrel 9 and the right mandrel 4 can be servo-fed and withdrawn, which is convenient for lifting the high-temperature alloy disk blank 5.

[0061] The induction heating unit includes two induction heating coils, which are arranged at both ends of the diameter of the high-temperature alloy disc 5, from the disc edge to the disc center, and a space matching the width of the rolling head is reserved between the two induction heating coils. Figure 1As shown, induction heating coils are installed at the upper and lower ends of the high-temperature alloy disc blank 5 respectively. The induction heating coils are similar to arc-shaped shells, and the upper and lower semicircles of the high-temperature alloy disc blank 5 can be placed therein. After the induction heating coils at both ends are installed, a space with the width of the rolling head will be leaked, which is convenient for the rolling head to rotate and press down; the core area of ​​the high-temperature alloy disc blank 5 is in the gap between the upper induction heating coil 6 and the lower induction heating coil 1, and is not within the encirclement of the induction heating coils. The temperature of the core area of ​​the high-temperature alloy disc blank 5 is mainly generated by heat transfer from the induction heated area outside it, and its temperature change trend is mainly that the temperature gradually increases with the increase of the induction heating time of its outer side.

[0062] In order to effectively control the temperature of the center area of ​​the high-temperature alloy disk 5 to be lower than the grain growth temperature, the device is also equipped with a disk center water cooling part, which includes two rotary joints, which are assembled inside the two mandrels, and the rotary joints are provided with cold water pipes and return water pipes. The rotary joints are connected to the water cooling system externally, see Figure 1 The left mandrel 9 and the right mandrel 4 on both sides of the core area of ​​the high-temperature alloy disk blank 5 are hollow inside, and the rotary joints arranged inside them have a cold water pipe and a return water pipe. Each mandrel end is connected to a rotary joint. After the cooling water enters from the left rotary joint water inlet 10 and the right rotary joint water inlet 12, it flows through the cold water pipe inside the mandrel to exchange heat with the core area of ​​the high-temperature alloy disk blank 5. The return water that takes away the heat from the core area of ​​the high-temperature alloy disk blank 5 returns to the water tank of the water cooling system from the left rotary joint water outlet 11 and the right rotary joint water outlet 13, and the reciprocating cycle realizes forced cooling of the core area of ​​the high-temperature alloy disk blank 5. In addition, the cooling effect of the core area of ​​the high-temperature alloy disk blank 5 can be adjusted by adjusting the water pressure of the water cooling system, so as to control the temperature of the core area of ​​the high-temperature alloy disk blank 5 to be lower than the grain growth temperature.

[0063] The temperature measuring part includes two infrared temperature measuring devices, which are respectively arranged in the center area and the edge area of ​​the high-temperature alloy disk blank 5; the infrared temperature measuring device can be an independent infrared thermometer or a temperature measuring probe arranged inside the temperature measuring system; the application is explained by using an infrared thermometer as an example; infrared thermometers are respectively placed at the center and edge of the high-temperature alloy disk blank 5, and the infrared thermometers are connected to the induction heating power supply, which can actually control the temperature of the center area of ​​the high-temperature alloy disk blank 5 to the set value, that is, the first preset temperature (800°C) and the second preset temperature (935°C). When the temperature is lower than the set value, the induction heating coil works at high power for heating, and when the temperature is higher than the set value, the induction heating coil works at low power for heating. In short, stable temperature control can be achieved.

[0064] The rolling head moving part includes four rolling heads, a rotating motor connected to each rolling head, an axial feeding device and a radial feeding device, and each two rolling heads are respectively arranged on both sides of the center of the high-temperature alloy disc blank 5. The rolling heads roll the high-temperature alloy disc blank 5 from the disc center area to the disc edge area through the rotating motor, the axial feeding device and the radial feeding device; Figure 1 As shown, rolling head a and rolling head d are respectively arranged on both sides of the inner hole of the disk center on the same side of the high-temperature alloy disk blank 5, and rolling head b and rolling head c are respectively arranged on both sides of the inner hole of the disk center on the same side of the high-temperature alloy disk blank 5; the uniform rotation of rolling head a, rolling head b, rolling head c and rolling head d can drive the high-temperature alloy disk blank 5 to rotate for uniform heating, and the radial feeding device and the axial feeding device can complete the forming of different structures on the high-temperature alloy disk blank 5.

[0065] The mandrel feeding unit includes a clamp and a motor for controlling the feeding and withdrawal of the mandrel; the mandrel servo feeding and withdrawal are controlled by the clamp and the motor, thereby improving the automation level and further improving the production efficiency of the equipment.

[0066] The rolling forming equipment has the characteristics of small contact area between the rolling head and the high-temperature alloy disc blank 5 and rotational tangential force, which leads to a small forming load in the forming process. Compared with the traditional hot die forging method, it belongs to a labor-saving flexible forming technology, with small forming tonnage requirements for the equipment, long die service life, short process cycle, and flexible and changeable deformation trajectory of the rolling head. Therefore, it can greatly reduce production costs and dependence on molds, and is suitable for the forming and manufacturing of a variety of difficult-to-deform metal disc-shaped parts. The products prepared by the rolling forming equipment have broad application prospects and benefits in the fields of military industry, aerospace, transportation, etc.

[0067] [Specific embodiment of the local rolling forming method of high temperature alloy gradient structure dual performance disk]

[0068] The present application provides a local rolling forming method for a high-temperature alloy gradient structure dual-performance disk, wherein both sides of the high-temperature alloy gradient structure dual-performance disk have an annular groove structure spanning a portion of the disk center to the disk edge, such as Figure 2 As shown, the forming method includes:

[0069] S1: Install the high-temperature alloy disc blank 5 onto the mandrel of the clamping part, and rotate the high-temperature alloy disc blank 5 at a constant speed through the mandrel.

[0070] S101: two mandrels clamp the inner hole of the disk center of the high-temperature alloy disk blank 5, and an induction heating coil is respectively arranged at both ends of the diameter of the high-temperature alloy disk blank 5 from the disk edge to the disk center, and a space matching the width of the rolling head is reserved between the two induction heating coils;

[0071] S102: According to the preset downward pressure and the preset rolling head speed, the multiple rolling heads attached to the two sides of the high-temperature alloy disc blank 5 are started to rotate, driving the high-temperature alloy disc blank 5 to rotate at a uniform speed inside the induction heating coil, wherein the preset downward pressure is 1 mm, and the preset rolling head speed is 2 r / min.

[0072] Step 1001: Prepare a rolled high-temperature alloy disc blank 5 (GH4169 can be used), and after machining, its inner hole diameter D1 is 40 mm, the outer diameter D2 of the high-temperature alloy disc blank 5 is 450 mm, the disc thickness H1 is 50 mm (i.e., the length of the high-temperature alloy disc blank 5 along the axial direction), and the roughness of the outer surface of the high-temperature alloy disc blank 5 is Ra1.6, such as Figure 3a 5 samples of high temperature alloy disc blanks are shown.

[0073] Step 1002: withdraw the right mandrel 4 in the horizontal direction, hoist the high-temperature alloy disc blank 5 to the inner hole of the disc center and align it with the left mandrel 9 and insert it into the left mandrel, feed the right mandrel 4 to clamp the high-temperature alloy disc blank 5 to ensure that there is no slippage between the high-temperature alloy disc blank 5 and the mandrel.

[0074] Step 1003: Install two upper and lower induction heating coils similar to arc-shaped shells according to the vertical position of the high-temperature alloy disc blank 5, fix the positions of the upper and lower induction heating coils by an induction heating coil fixing frame, and ensure that space for the rolling head to move is reserved between the two induction heating coils.

[0075] Step 1004: Start the control system of the rolling forming equipment, attach the four rolling heads to the surface of the high-temperature alloy disc blank 5 respectively, set the axial downward pressure of the rolling heads to 1mm, ensure that there is no slipping space between the four rolling heads and the disc blank, start the rotation of the four rolling heads, and set the rolling head speed to 2r / min to ensure that the high-temperature alloy disc blank 5 can rotate at a uniform speed.

[0076] S2: heating the high temperature alloy disc blank 5, and cooling the center area of ​​the high temperature alloy disc blank 5 at the same time, waiting for the temperature of the high temperature alloy disc blank 5 from the center area to the edge area to form and maintain the high temperature alloy rolling forming temperature gradient range, wherein the high temperature alloy rolling forming temperature gradient range is 935℃±10℃~1080℃±10℃, such as Figure 5 As shown, where T1<T2<T3.

[0077] S21: adjusting the positions of the infrared temperature measuring devices at the center and the edge of the high-temperature alloy disk 5, and starting the induction heating power supply and the water cooling system;

[0078] S22: The temperature of the high-temperature alloy disk blank 5 from the disk center area to the disk edge area is detected in real time by the infrared temperature measuring device. After the temperature of the disk center area reaches a first preset temperature, the induction heating power and the water pressure of the water cooling system are adjusted so that the temperature of the high-temperature alloy disk blank 5 is kept warm for a preset time, wherein the first preset temperature is 800° C.;

[0079] S23: Adjust the induction heating power and the water pressure of the water cooling system to heat the high-temperature alloy disc 5 again, wait for the temperature of the disc center area to reach the second preset temperature, and then adjust the induction heating power and the water pressure of the water cooling system again, so that after the temperature of the high-temperature alloy disc 5 is kept warm for a preset time, the temperature of the high-temperature alloy disc 5 in the disc center area is 935℃±10℃, and the temperature in the disc edge area is 1080℃±10℃, thereby forming a high-temperature alloy rolling forming temperature gradient range, in which the second preset temperature is 935℃.

[0080] Step 2001: Adjust the positions of the two infrared thermometers at the center and edge of the high-temperature alloy disk blank 5, start the induction heating power supply and the water cooling system, heat the high-temperature alloy disk blank 5, and use the infrared thermometer to measure the temperature in real time during heating. The heating temperature at the center of the high-temperature alloy disk blank 5 is set to 800°C and kept warm for 30 minutes.

[0081] Step 2002: Adjust the heating temperature to 935℃±10℃ and keep it warm for 30 minutes. At this time, the temperature at the center of the high-temperature alloy disk blank 5 is 935℃±10℃, the temperature at the edge of the high-temperature alloy disk blank 5 is 1080℃±10℃, and the temperature of the four rolling heads is basically maintained between 700-800℃.

[0082] S3: According to the thickness of the high-temperature alloy disc blank 5, the first deformation ratio and the second deformation ratio, the first axial downward pressure in the disc center area and the second axial downward pressure in the disc edge area are set for each rolling pass, wherein the first deformation ratio ranges from 16% to 23.5%, and the second deformation ratio ranges from 8% to 13.3%.

[0083] Since the thickness of the high-temperature alloy disc blank 5 prepared in step 1001 is given as 50 mm, the axial downward pressure of the center area, transition area and edge area of ​​the high-temperature alloy disc blank 5 can be set; in the center area and transition area of ​​the high-temperature alloy disc blank 5, the first deformation ratio of the first rolling of the center area and the transition area is 16%, and the first axial downward pressure can be 4 mm, that is, the rolling head presses down 4 mm at the relative positions of the center area on both sides of the high-temperature alloy disc blank 5; in the edge area of ​​the high-temperature alloy disc blank 5, the second deformation ratio of the first rolling of the edge area is 8%, and the second axial downward pressure is 2 mm, that is, the rolling head presses down 2 mm at the relative positions of the edge areas on both sides of the high-temperature alloy disc blank 5.

[0084] After each rolling is completed, the corresponding area of ​​the high-temperature alloy disk blank 5 will become thinner, and finally Figure 3b As shown, H1 changes to H2, so the axial pressing amount of the next pass will select a larger deformation ratio to keep the settings of the first axial pressing amount and the second axial pressing amount in the specific area of ​​the high-temperature alloy disk blank 5 unchanged.

[0085] For example, the initial thickness of the high-temperature alloy disc blank 5 is 50 mm. After the first rolling of the disc center area is completed, the second rolling is carried out. At this time, the thickness of the disc center area is 52 mm. The first deformation ratio that needs to be selected for the second rolling can be 19%, ensuring that the first axial downward pressure value of the second rolling is 4 mm.

[0086] S4: According to the first axial downward pressure and the corresponding first rolling head speed, the second axial downward pressure and the corresponding second rolling head speed, the two sides of the high-temperature alloy disc blank 5 are rolled in sequence from the specific position of the disc center area along the radial outward direction to form a high-temperature alloy gradient structure dual-performance disc with an annular groove structure, referring to Figure 3b The pattern shape of the annular groove structure shown in the figure, wherein the first rolling head has a rotation speed of 4r / min and the second rolling head has a rotation speed of 3r / min.

[0087] S41: According to the first axial downward pressure and the first rolling head speed, the high-temperature alloy disc blank 5 is rolled from the center area to the transition area on both sides; according to the second axial downward pressure and the second rolling head speed, the high-temperature alloy disc blank 5 is rolled on the edge areas on both sides. According to this setting, the first annular groove rolled out requires three rolling procedures. The three rolling procedures are as follows:

[0088] Step 4001: within the temperature gradient range of high-temperature alloy rolling forming, call the first step rolling program set in advance. The first step rolling program is divided into: the rolling head is at an initial position 120mm away from the center of the high-temperature alloy disk blank 5 and presses down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 30mm, and then pressed down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 30mm, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min.

[0089] Step 4002: After completing the first step of the rolling program, call the second step of the rolling program. The second step of the rolling program is divided into: the rolling head is at an initial position of 122mm away from the center of the high-temperature alloy disk blank 5 and is pressed down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 30mm, and then pressed down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 24mm, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min.

[0090] Step 4003: After completing the second step of the rolling program, call the third step of the rolling program. The third step of the rolling program is divided into: the rolling head is at an initial position of 124mm away from the center of the high-temperature alloy disk blank 5 and is pressed down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 30mm, and then pressed down 4mm in the axial direction, and the rolling head rotates at a speed of 4r / min; the four rolling heads are lifted and moved outward in the radial direction by 20mm, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min, and then pressed down 2mm in the axial direction, and the rolling head rotates at a speed of 3r / min.

[0091] S5: heat-treating the high-temperature alloy gradient microstructure dual-performance disk according to the preset heat treatment temperature and holding time, and water-cooling the heat-treated high-temperature alloy gradient microstructure dual-performance disk to room temperature, wherein the preset heat treatment temperature is 975°C and the holding time is 50 minutes.

[0092] Step 501: After each step of the rolling procedure is completed in sequence, the induction heating power supply is turned off, the rolling head is withdrawn from the surface of the high-temperature alloy gradient structure dual-performance disk, the upper induction heating coil 6 and the lower induction heating coil 1 are removed, and the water cooling system is turned off to complete the rolling forming of the high-temperature alloy gradient structure dual-performance disk;

[0093] Step 502: heat-treating the deformed high-temperature alloy gradient structure dual-performance disk at a temperature of 975° C. for 50 minutes, and then water-cooling to room temperature.

[0094] On the other hand, the present application also provides a high-temperature alloy gradient structure dual-performance disk for aviation, which is rolled using any of the above-mentioned local rolling forming methods for high-temperature alloy gradient structure dual-performance disks and any of the above-mentioned equipment to form a high-temperature alloy gradient structure dual-performance disk having an annular groove structure spanning a partial area from the center of the disk to the edge of the disk.

[0095] Specifically, the high-temperature alloy gradient structure dual-performance disk has a specific annular groove shape, and the core area of ​​the high-temperature alloy gradient structure dual-performance disk has an equiaxed fine grain structure, such as Figure 4a As shown, it can ensure good tensile strength and fatigue resistance; the transition interval is small and the organization is uniform, such as Figure 4b As shown; while the disk edge area is a coarse grain structure, such as Figure 4c As shown, it can ensure that it has high temperature durability, creep and fatigue crack growth resistance. The high-temperature alloy gradient structure dual-performance disk has good gradient structure and is widely used in turbine disks, which are key components inside aircraft engines.

[0096] In summary, the local rolling forming method and disk of the high-temperature alloy gradient organization dual-performance disk provided by the present application have a specific shape, a uniform distribution of crystal gradient organization, and have the advantages of high temperature resistance, high stability, and good thermal corrosion resistance. The rolling forming method of the high-temperature alloy gradient organization dual-performance disk adopts local rolling forming and temperature gradient control to realize the forming and control of its dual-organization structure. The local rolling forming can form different shape structures through the active rotation and downward pressure of the rolling head; the temperature gradient of the high-temperature alloy gradient organization dual-performance disk along its radial direction (935℃± The establishment and maintenance of the temperature range of 10℃~1080℃±10℃) is ensured by the combined effect of induction heating from the disk edge area to the disk center area and forced water cooling measures taken in the disk center area; based on the organization refinement mechanism of dynamic recrystallization and static recrystallization in the disk center area, and the coarse grain control mechanism of dynamic grain growth and static grain growth during small deformation and waiting for temperature in the disk edge area, the temperature, deformation amount and deformation rate are simultaneously controlled during the forming process of the high-temperature alloy gradient organization dual-performance disk to achieve the purpose of accurately controlling the generation of its dual organization; and the equipment can reduce the forming load and processing cost, does not need to replace the mold, and has high production efficiency.

[0097] Unless otherwise defined, all technical and scientific terms used in this application are the same as those generally understood by those skilled in the art to which this application belongs. If there is any inconsistency, the meaning described in the full text of this application or the meaning derived from the content recorded in the full text of this application shall prevail. In addition, the terms used in this description are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0098] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the technical concept of the present application, all of which belong to the protection scope of the present application.

[0099] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for local rolling forming of high-temperature alloy gradient structure dual-performance disc, characterized in that: The high-temperature alloy gradient structure dual-performance disk has an annular groove structure on both sides that spans a portion of the disk center to the disk edge, and the forming method includes: Install the high-temperature alloy disc blank to the mandrel of the clamping part, and rotate the high-temperature alloy disc blank at a uniform speed through the mandrel; Heating the high-temperature alloy disk blank and cooling the center area of ​​the high-temperature alloy disk blank at the same time, waiting for the temperature of the high-temperature alloy disk blank from the center area to the edge area to form and maintain a high-temperature alloy rolling forming temperature gradient interval, wherein the high-temperature alloy rolling forming temperature gradient interval is 935°C ± 10°C to 1080°C ± 10°C; According to the thickness of the high-temperature alloy disc blank, the first deformation ratio and the second deformation ratio, the first axial pressing amount in the disc core area and the second axial pressing amount in the disc edge area of ​​each rolling pass are set, wherein the value range of the first deformation ratio is 16% to 23.5%, and the value range of the second deformation ratio is 8% to 13.3%; According to the first axial downward pressure and the corresponding first rolling head speed, the second axial downward pressure and the corresponding second rolling head speed, the two sides of the high-temperature alloy disc blank are rolled in sequence from a specific position of the disc center area along the radial outward direction to form a high-temperature alloy gradient structure dual-performance disc with the annular groove structure, wherein the first rolling head speed is 4r / min, and the second rolling head speed is 3r / min; The high-temperature alloy gradient structure dual-performance disk is heat treated according to the preset heat treatment temperature and holding time, and the high-temperature alloy gradient structure dual-performance disk that has undergone the heat treatment is water-cooled to room temperature, wherein the preset heat treatment temperature is 975°C and the holding time is 50 minutes.

2. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 1 is characterized in that: The method further comprises: rolling the two sides of the high-temperature alloy disc blank in sequence from a specific position of the disc center area along the radial direction outward according to the first axial downward pressure amount and the corresponding first rolling head speed, the second axial downward pressure amount and the corresponding second rolling head speed. According to the first axial downward pressure and the first rolling head speed, rolling is performed from the center area to the transition area on both sides of the high-temperature alloy disc blank; The disk edge areas on both sides of the high-temperature alloy disk blank are rolled according to the second axial downward pressure amount and the second rolling head rotation speed.

3. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 1 is characterized in that: The first axial downward pressing amount is equal to half of the product of the thickness of the high-temperature alloy disc blank and the first deformation ratio, wherein the thinner the thickness of the high-temperature alloy disc blank is, the larger the value of the first deformation ratio is.

4. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 2 is characterized in that: The second axial downward pressing amount is equal to half of the product of the thickness of the high-temperature alloy disc blank and the second deformation ratio, wherein the thinner the thickness of the high-temperature alloy disc blank is, the larger the value of the second deformation ratio is.

5. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 1 is characterized in that: The method of installing the high-temperature alloy disc blank onto the mandrel of the clamping part and rotating the high-temperature alloy disc blank at a uniform speed through the mandrel also includes: Two mandrels clamp the inner hole of the disk center of the high-temperature alloy disk blank, and an induction heating coil is arranged at both ends of the diameter of the high-temperature alloy disk blank from the disk edge to the disk center, and a space matching the width of the rolling head is reserved between the two induction heating coils; According to the preset downward pressure and the preset rolling head speed, the multiple rolling heads attached to both sides of the high-temperature alloy disc blank are started to rotate, driving the high-temperature alloy disc blank to rotate at a uniform speed inside the induction heating coil, wherein the preset downward pressure is 1 mm, and the preset rolling head speed is 2 r / min.

6. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 5 is characterized in that: The two mandrels clamp the inner hole of the disk center of the high-temperature alloy disk blank, and further include: The front ends of the two mandrels respectively pass through the inner holes of the disk center of the high-temperature alloy disk blank, wherein the interior of the mandrel is hollow and a rotary joint is inserted therein, and the rotary joint is externally connected to a water cooling system.

7. The local rolling forming method of high temperature alloy gradient structure dual performance disk according to claim 6 is characterized in that: The step of heating the high temperature alloy disc blank and cooling the center region of the high temperature alloy disc blank simultaneously, and waiting for the temperature of the high temperature alloy disc blank from the center region to the edge region thereof to form and maintain a high temperature alloy rolling forming temperature gradient interval, further comprises: Adjusting the positions of the infrared temperature measuring devices at the center and edge of the high-temperature alloy disk blank, and starting the induction heating power supply and the water cooling system; The temperature of the high-temperature alloy disk blank from the disk center area to the disk edge area is detected in real time by an infrared temperature measuring device, and after the temperature of the disk center area reaches a first preset temperature, the induction heating power and the water pressure of the water cooling system are adjusted so that the temperature of the high-temperature alloy disk blank is kept warm for a preset time, wherein the first preset temperature is 800° C.; The induction heating power and the water pressure of the water cooling system are adjusted to heat the high-temperature alloy disc again. After waiting for the temperature of the disc center area to reach the second preset temperature, the induction heating power and the water pressure of the water cooling system are adjusted again so that after the temperature of the high-temperature alloy disc is kept warm for the preset time, the temperature of the high-temperature alloy disc in the disc center area is 935°C±10°C and the temperature in the disc edge area is 1080°C±10°C, thereby forming the high-temperature alloy rolling forming temperature gradient range, wherein the second preset temperature is 935°C.

8. A rolling forming device for high temperature alloy gradient structure dual performance disc, characterized in that: include: A clamping part, comprising two mandrels, wherein the two mandrels are fixedly clamped at the inner holes of the disk center on both sides of the high-temperature alloy disk blank; An induction heating part, comprising two induction heating coils, which are arranged at both ends of the diameter of the high-temperature alloy disc blank, from the disc edge to the disc center, and a space matching the width of the rolling head is reserved between the two induction heating coils; The disk core water cooling part comprises two rotating joints, the rotating joints are assembled inside the two core shafts, and a cold water pipe and a return water pipe are arranged inside the rotating joints, wherein the cold water pipe and the return water pipe are externally connected to a water cooling system; A temperature measuring part, comprising two infrared temperature measuring devices, wherein the two infrared temperature measuring devices are respectively arranged in a disk center area and a disk edge area of ​​the high temperature alloy disk blank; The rolling head moving part includes four rolling heads, a rotating motor connected to each of the rolling heads, an axial feeding device and a radial feeding device, and each two of the rolling heads are respectively arranged on both sides of the center of the high-temperature alloy disc blank on both sides thereof. The rolling heads roll the high-temperature alloy disc blank from the center area to the edge area of ​​the disc through the rotating motor, the axial feeding device and the radial feeding device.

9. The rolling forming equipment for high temperature alloy gradient structure dual performance disc according to claim 8 is characterized in that: Also included is a spindle feeding portion, which includes a clamp and a motor for controlling the feeding and withdrawal of the spindle.

10. A high-temperature alloy gradient structure dual-performance disk for aviation, characterized in that: It is formed by local rolling forming method of high temperature alloy gradient structure dual performance disk as described in any one of claims 1-7 and equipment as described in claims 8-9, so as to form a high temperature alloy gradient structure dual performance disk with an annular groove structure spanning the center of the disk to the edge of the disk.

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