High-temperature alloy forging method

Abstract

The invention belongs to a high-temperature alloy forging method in the technical field of high-temperature alloy forging. Upsetting, drawing and cogging are carried out on the high-temperature alloy ingot with the diameter being 470-490 mm, specifically, primary upsetting with the deformation being 28%-32% is carried out, and then the high-temperature alloy ingot is drawn to the original length; secondary upsetting with the deformation of 28%-32% is carried out, and then drawing-out is carried out till the original length is reached; continuously performing one-way drawing on the high-temperature alloy ingot to obtain a bar with the diameter of 230mm to 250mm; the method comprises the following steps: heating a bar with the diameter of 230mm to 250mm to 1000 DEG C to 1050 DEG C, and keeping the temperature for 40 minutes to 120 minutes; four working flat anvils of a radial forging machine are used for conducting one-heating-number radial forging forming on the heated bar with the diameter ranging from 230 mm to 250 mm at the same time, the final forging temperature is not lower than 950 DEG C, and the finished high-temperature alloy bar is obtained; and whether the grain size of the finished high-temperature alloy bar meets the set requirement or not is judged, if yes, forging is completed, and if not, the heating temperature and the heat preservation time are adjusted, and radial forging forming is conducted again. According to the high-temperature alloy forging method, by reasonably controlling program parameters of the radial forging machine, one-time heating of the radial forging machine is guaranteed, the performance and the grain size of a finished product meet the industrial requirements, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-temperature alloy forging, and more specifically, relates to a high-temperature alloy forging method. Background Art

[0002] Due to their complex chemical composition and sensitive microstructure, high-temperature alloys are prone to defects such as segregation and uneven structure during the forging process, which affect the overall performance of the alloy. At present, the production of high-temperature alloy forgings usually adopts a process route of rapid forging to open the blank and then forging the finished product. However, this process has shortcomings. For example, the rapid forging machine is a free forging equipment, and the deformation process is not uniform. Cracks and other defects often occur, requiring grinding treatment, which reduces production efficiency. The connection between rapid forging and forging equipment is difficult, resulting in long waiting times and increased energy consumption. The yield rate is low, making it difficult to meet the requirements of cost reduction and efficiency improvement. In addition, the existing process cannot effectively control the finished product performance and grain size of high-temperature alloy forgings, making it difficult to meet the strict requirements of high-temperature alloy forgings in fields such as aerospace. The defects in the existing technology are: 1. The existing process cannot effectively control the finished product performance and grain size of high-temperature alloy forgings, and it is difficult to meet the industry's strict requirements for high-temperature alloy forgings; 2. In the existing process, it is difficult to connect the fast forging and radial forging equipment, resulting in long waiting times and increased energy consumption; 3. In the existing process, the fast forging machine is a free forging equipment, the deformation process is not uniform, and defects such as cracks often occur, which requires grinding treatment, reducing production efficiency; 4. In the existing process, the yield rate is low, which is difficult to meet the requirements of cost reduction and efficiency improvement; 5. In the existing process, there are too many radial forging fires, which affects production efficiency. In summary, the existing technology has problems such as the inability to effectively control the finished product performance and grain size of high-temperature alloy forgings, low production efficiency, and high energy consumption.

[0003] In the prior art, there is a technology named "A Forging Equipment and Forging Method for High-Temperature Alloys" and with a publication (announcement) number of "CN119681177A". This technology relates to the field of high-temperature alloy technology, specifically a high-temperature alloy forging equipment, including a base, a stamping device fixedly connected to the top of the base, a forging table fixedly connected to the side of the top of the base away from the stamping device, a control column fixedly connected to the side of the top of the base away from the forging table, and a mold replacement disk movably connected to the outer wall of the control column. The present invention provides a control column and a mold replacement disk, making mold replacement during the high-temperature alloy forging process flexible and efficient. The mold replacement disk body is tightly coupled to the control column housing and the slide plate through a rotating shaft. The precise engagement of the top gear and the second gear realizes smooth rotation and positioning of the mold replacement disk on the control column. This design not only simplifies the operation process of mold replacement, but also greatly improves the accuracy and efficiency of replacement, providing great convenience for forging high-temperature alloys of different specifications and shapes. However, this technology does not address the technical problems and technical solutions of the present application. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a high-temperature alloy forging method is provided with simple steps, which ensures that the radial forging machine can be completed in one fire by reasonably controlling the program parameters of the radial forging machine, so that the performance and grain size of the finished product meet the industry requirements, improves production efficiency and reduces production costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0006] The present invention provides a high-temperature alloy forging method, wherein the forging steps of the high-temperature alloy forging method are as follows:

[0007] S1. Using vacuum induction melting (VIM) and vacuum consumable remelting (VAR) processes to prepare Φ490mm-Φ520mm high-temperature alloy ingots, the surface is polished to Φ470mm-Φ490mm;

[0008] S2. Upsetting and drawing of Φ470mm-Φ490mm high-temperature alloy ingots, including:

[0009] S201 performs a 28%-32% deformation upsetting, and then stretches to the original length;

[0010] S202 performs secondary upsetting with a deformation of 28%-32%, and then stretches to the original length;

[0011] S203 continues to unidirectionally draw the high-temperature alloy ingot to Φ230mm-Φ250mm rod;

[0012] S3. Heat the Φ230mm-Φ250mm bar to 1000℃-1050℃ and keep it at this temperature for 40min-120min;

[0013] S4. The heated Φ230mm-Φ250mm bar is simultaneously subjected to a fire-time radial forging process using four flat anvils of the radial forging machine. The final forging temperature is not less than 950°C to obtain a finished high-temperature alloy bar.

[0014] S5. Determine whether the grain size of the finished high-temperature alloy bar meets the set requirements. If so, complete the forging. If not, return to S3 and re-do the heating temperature and holding time, and re-do the radial forging.

[0015] S4 of the high-temperature alloy forging method includes:

[0016] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0017] S402. Control the program parameters of the radial forging machine so that the equivalent strain of the outer diameter of the bar is maximized during the radial forging process to avoid the black crystal structure of the outer diameter of the bar caused by excessive precipitation of the δ phase;

[0018] S403. Forge to the finished high-temperature alloy bar specifications in one heat, with the final forging temperature not less than 950℃.

[0019] During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1010° C. and kept at this temperature for 60 minutes;

[0020] In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 970°C, to obtain a finished high-temperature alloy bar.

[0021] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 6, the forging is completed; if the grain size does not reach level 6, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 90 minutes, and performs radial forging again.

[0022] When the high temperature alloy forging method is carried out in S4,

[0023] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0024] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.2, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0025] S403. One-pass radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 970℃.

[0026] During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1030° C. and kept at this temperature for 90 minutes;

[0027] In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 960° C., thereby obtaining a finished high-temperature alloy bar.

[0028] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 7, the forging is completed; if the grain size does not reach level 7, the method returns to S3, adjusts the heating temperature to 1010°C, the holding time to 120 minutes, and performs radial forging again.

[0029] The high-temperature alloy forging method S4 includes:

[0030] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0031] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.5, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0032] S403. One-time radial forging to form finished high-temperature alloy bars to a specification of Φ150mm, with a final forging temperature of 960℃.

[0033] When the high-temperature alloy forging method is performed in step S3, the Φ230mm-Φ250mm bar is heated to 1040°C and kept at this temperature for 75 minutes;

[0034] When the high-temperature alloy forging method is performed in S4, the heated Φ230mm-Φ250mm bar is simultaneously subjected to single-fire radial forging using four working flat anvils of a radial forging machine, with a final forging temperature of 980°C to obtain a finished high-temperature alloy bar.

[0035] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 8, the forging is completed; if the grain size does not reach level 8, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 100 minutes, and performs radial forging again.

[0036] When the high temperature alloy forging method is carried out in S4,

[0037] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0038] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.3, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0039] S403. One-time radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 980℃.

[0040] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0041] Compared with the prior art, the high-temperature alloy forging method described in the present invention provides a high-temperature alloy forging method that utilizes the radial forging machine one-fire material forming technology to control the radial forging machine program, which has the following beneficial effects: 1. Through the radial forging machine one-fire material forming technology, the problem of difficulty in connecting fast forging and radial forging equipment is avoided, the long waiting time for materials is reduced, and energy consumption is reduced; 2. The radial forging machine is a closed forging equipment with a unified deformation process, which avoids the generation of defects such as cracks, does not require grinding treatment, and improves production efficiency; 3. The radial forging machine one-fire material forming technology improves the yield rate and meets the requirements of reducing costs and increasing efficiency; 4. By reasonably controlling the program parameters of the radial forging machine, the finished product performance and grain size of the high-temperature alloy forgings are effectively controlled to meet the strict requirements of the aerospace and other fields for high-temperature alloy forgings; 5. The problem of too many radial forging fires in the existing process is avoided, and production efficiency is further improved. DETAILED DESCRIPTION

[0042] The following describes the embodiments to further explain the specific embodiments of the present invention, such as the shapes, structures, mutual positions and connection relationships between the various components involved, the functions and working principles of the various components.

[0043] The present invention provides a high-temperature alloy forging method, wherein the forging steps of the high-temperature alloy forging method are as follows:

[0044] S1. Use vacuum induction melting (VIM) and vacuum consumable remelting (VAR) to prepare Φ490mm-Φ520mm high-temperature alloy ingots, and polish the surface to Φ470mm-Φ490mm; S2. Upsetting and blanking the Φ470mm-Φ490mm high-temperature alloy ingots, including: S201. Perform a primary upsetting with a deformation amount of 28%-32%, and then draw it to the original length; S202. Perform a secondary upsetting with a deformation amount of 28%-32%, and then draw it to the original length; S203. Continue to unidirectionally draw the high-temperature alloy ingot to Φ230mm-Φ250mm mm bars; S3. Heat the Φ230mm-Φ250mm bars to 1000℃-1050℃ and hold the temperature for 40min-120min; S4. Use the four working anvils of the radial forging machine to simultaneously perform a single-fire radial forging on the heated Φ230mm-Φ250mm bars, with the final forging temperature not lower than 950℃, to obtain finished high-temperature alloy bars; S5. Determine whether the grain size of the finished high-temperature alloy bars meets the set requirements. If so, complete the forging; if not, return to S3 and repeat, adjust the heating temperature and holding time, and repeat the radial forging. The above steps address the shortcomings of the existing technology and propose an improved technical solution. Compared with the prior art, the present invention provides a high-temperature alloy forging method that utilizes a radial forging machine one-fire material forming technology to control the radial forging machine program, which has the following beneficial effects: 1. The radial forging machine one-fire material forming technology avoids the problem of difficulty in connecting fast forging with radial forging equipment, reduces long waiting time for materials, and reduces energy consumption; 2. The radial forging machine is a closed forging equipment with a unified deformation process, which avoids the generation of defects such as cracks, does not require grinding treatment, and improves production efficiency; 3. The radial forging machine one-fire material forming technology improves the yield rate and meets the requirements of cost reduction and efficiency improvement; 4. By reasonably controlling the program parameters of the radial forging machine, the finished product performance and grain size of the high-temperature alloy forgings are effectively controlled, meeting the strict requirements of the aerospace and other fields for high-temperature alloy forgings; 5. The problem of too many radial forging fires in the existing process is avoided, further improving production efficiency. The high-temperature alloy forging method described in the present invention has simple steps. By reasonably controlling the program parameters of the radial forging machine, the radial forging machine one-fire material forming is ensured, so that the finished product performance and grain size meet industry requirements, improving production efficiency and reducing production costs.

[0045] S4 of the high-temperature alloy forging method includes:

[0046] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0047] S402. Control the program parameters of the radial forging machine so that the equivalent strain of the outer diameter of the bar is maximized during the radial forging process to avoid the black crystal structure of the outer diameter of the bar caused by excessive precipitation of the δ phase;

[0048] S403. Forge to the finished high-temperature alloy bar specifications in one heat, with the final forging temperature not less than 950℃.

[0049] As Example 1:

[0050] S1. A Φ508mm high-temperature alloy ingot was prepared using vacuum induction melting (VIM) and vacuum consumable remelting (VAR) processes, and the surface was polished to Φ480mm.

[0051] S2. Upsetting and drawing the Φ480mm high-temperature alloy ingot, including:

[0052] S201. Perform a 30% deformation upsetting and stretch to the original length;

[0053] S202. Perform secondary upsetting with a deformation of 30% and draw to the original length;

[0054] S203. Continue unidirectional drawing to Φ240mm bar;

[0055] During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1010° C. and kept at this temperature for 60 minutes;

[0056] In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 970°C, to obtain a finished high-temperature alloy bar.

[0057] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 6, the forging is completed; if the grain size does not reach level 6, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 90 minutes, and performs radial forging again.

[0058] When the high temperature alloy forging method is carried out in S4,

[0059] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0060] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.2, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0061] S403. One-pass radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 970℃.

[0062] As Example 2:

[0063] In the high temperature alloy forging method,

[0064] S1. A Φ508mm high-temperature alloy ingot was prepared using vacuum induction melting (VIM) and vacuum consumable remelting (VAR) processes, and the surface was polished to Φ480mm.

[0065] S2. Upsetting and drawing the Φ480mm high-temperature alloy ingot, including:

[0066] S201. Perform a 30% deformation upsetting and stretch to the original length;

[0067] S202. Perform secondary upsetting with a deformation of 30% and draw to the original length;

[0068] S203. Continue unidirectional drawing to Φ240mm bar;

[0069] During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1030° C. and kept at this temperature for 90 minutes;

[0070] In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 960° C., thereby obtaining a finished high-temperature alloy bar.

[0071] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 7, the forging is completed; if the grain size does not reach level 7, the method returns to S3, adjusts the heating temperature to 1010°C, the holding time to 120 minutes, and performs radial forging again.

[0072] The high-temperature alloy forging method S4 includes:

[0073] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0074] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.5, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0075] S403. One-time radial forging to form finished high-temperature alloy bars to a specification of Φ150mm, with a final forging temperature of 960℃.

[0076] As Example 3:

[0077] In the high temperature alloy forging method,

[0078] S1. A Φ508mm high-temperature alloy ingot was prepared using vacuum induction melting (VIM) and vacuum consumable remelting (VAR) processes, and the surface was polished to Φ480mm.

[0079] S2. Upsetting and drawing the Φ480mm high-temperature alloy ingot, including:

[0080] S201. Perform a 30% deformation upsetting and stretch to the original length;

[0081] S202. Perform secondary upsetting with a deformation of 30% and draw to the original length;

[0082] S203. Continue unidirectional drawing to Φ240mm bar;

[0083] When the high-temperature alloy forging method is performed in step S3, the Φ230mm-Φ250mm bar is heated to 1040°C and kept at this temperature for 75 minutes;

[0084] When the high-temperature alloy forging method is performed in S4, the heated Φ230mm-Φ250mm bar is simultaneously subjected to single-fire radial forging using four working flat anvils of a radial forging machine, with a final forging temperature of 980°C to obtain a finished high-temperature alloy bar.

[0085] When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 8, the forging is completed; if the grain size does not reach level 8, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 100 minutes, and performs radial forging again.

[0086] When the high temperature alloy forging method is carried out in S4,

[0087] S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar;

[0088] S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.3, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar;

[0089] S403. One-time radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 980℃.

[0090] The key to the present invention is a high-temperature alloy forging process control method, which utilizes the radial forging machine one-fire material forming technology and ensures the radial forging machine one-fire material forming by reasonably controlling the radial forging machine program parameters, so that the performance and grain size of the finished product meet industry requirements, improves production efficiency and reduces production costs.

[0091] The above is an exemplary description of the present invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A high-temperature alloy forging method, characterized in that: The forging steps of the high-temperature alloy forging method are: S1. High-temperature alloy ingots of Φ490mm-Φ520mm were prepared by vacuum induction melting and vacuum consumable remelting, and the surface was polished to Φ470mm-Φ490mm; S2. Upsetting and drawing of Φ470mm-Φ490mm high-temperature alloy ingots, including: S201 performs a 28%-32% deformation upsetting, and then stretches to the original length; S202 performs secondary upsetting with a deformation of 28%-32%, and then stretches to the original length; S203 continues to unidirectionally draw the high-temperature alloy ingot to Φ230mm-Φ250mm rod; S3. Heat the Φ230mm-Φ250mm bar to 1000℃-1050℃ and keep it at this temperature for 40min-120min; S4. The heated Φ230mm-Φ250mm bar is simultaneously subjected to a fire-time radial forging process using four flat anvils of the radial forging machine. The final forging temperature is not less than 950°C to obtain a finished high-temperature alloy bar. S5. Determine whether the grain size of the finished high-temperature alloy bar meets the set requirements. If so, complete the forging. If not, return to S3 and re-do the heating temperature and holding time, and re-do the radial forging.

2. The high temperature alloy forging method according to claim 1, characterized in that: S4 includes: S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar; S402. Control the program parameters of the radial forging machine so that the equivalent strain of the outer diameter of the bar is maximized during the radial forging process to avoid the black crystal structure of the outer diameter of the bar caused by excessive precipitation of the δ phase; S403. Forge to the finished high-temperature alloy bar specifications in one heat, with the final forging temperature not less than 950℃.

3. The high temperature alloy forging method according to claim 1, characterized in that: During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1010° C. and kept at this temperature for 60 minutes; In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 970°C, to obtain a finished high-temperature alloy bar. When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 6, the forging is completed; if the grain size does not reach level 6, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 90 minutes, and performs radial forging again.

4. The high temperature alloy forging method according to claim 3, characterized in that: When the high temperature alloy forging method is carried out in S4, S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar; S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.2, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar; S403. One-pass radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 970℃.

5. The high temperature alloy forging method according to claim 1, characterized in that: During step S3 of the high-temperature alloy forging method, a Φ230 mm to Φ250 mm bar is heated to 1030° C. and kept at this temperature for 90 minutes; In step S4 of the high-temperature alloy forging method, the heated Φ230mm-Φ250mm bar is subjected to single-fire radial forging using four working flat anvils of a radial forging machine at the same time, with the final forging temperature being 960° C., thereby obtaining a finished high-temperature alloy bar. When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 7, the forging is completed; if the grain size does not reach level 7, the method returns to S3, adjusts the heating temperature to 1010°C, the holding time to 120 minutes, and performs radial forging again.

6. The high temperature alloy forging method according to claim 5, characterized in that: The high-temperature alloy forging method S4 includes: S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar; S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.5, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar; S403. One-time radial forging to form finished high-temperature alloy bars to a specification of Φ150mm, with a final forging temperature of 960℃.

7. The high temperature alloy forging method according to claim 1, characterized in that: When the high-temperature alloy forging method is performed in step S3, the Φ230mm-Φ250mm bar is heated to 1040°C and kept at this temperature for 75 minutes; When the high-temperature alloy forging method is performed in S4, the heated Φ230mm-Φ250mm bar is simultaneously subjected to single-fire radial forging using four working flat anvils of a radial forging machine, with a final forging temperature of 980°C to obtain a finished high-temperature alloy bar.

8. The high temperature alloy forging method according to claim 7, characterized in that: When the high-temperature alloy forging method is performed in S5, the grain size of the finished high-temperature alloy bar is detected. If the grain size reaches level 8, the forging is completed; if the grain size does not reach level 8, the method returns to S3, adjusts the heating temperature to 1020°C, the holding time to 100 minutes, and performs radial forging again.

9. The high temperature alloy forging method according to claim 8, characterized in that: When the high temperature alloy forging method is carried out in S4, S401 radial forging machine using four flat anvils simultaneously after heating Φ230mm-Φ250mm bar deformation, so that the internal temperature of the bar reversed, to ensure the surface temperature of the bar; S402. Control the program parameters of the radial forging machine so that the equivalent effect of the outer diameter of the bar during radial forging becomes 1.3, avoiding the black crystal structure caused by excessive precipitation of the δ phase in the outer diameter of the bar; S403. One-time radial forging to form the finished high-temperature alloy bar to a specification of Φ150mm, with a final forging temperature of 980℃.