Manufacturing method of high-performance copper alloy combustion chamber inner wall

Abstract

The embodiment of the invention discloses a manufacturing method for the inner wall of a high-performance copper alloy combustion chamber, relates to the technical field of non-ferrous metal material manufacturing, and solves the material and machining problems in current combustion chamber manufacturing. The method comprises the following steps: carrying out sheath extrusion on CuCrNb powder to obtain a blank; the blank is ground, after grinding is completed, the blank enters a rolling mill for rolling treatment, residual copper edges are removed after rolling treatment, and a plate is obtained; the plate is cut based on the preset product blank size, then the plate is bent through a mold, and two semi-cylindrical thin-walled pipes are obtained; after the two semi-cylindrical thin-walled pipes are spliced, friction stir welding treatment is conducted, and welded thin-walled copper is obtained; the welded thin-wall copper is subjected to cutting treatment and spinning treatment, and a combustion chamber inner wall blank is obtained; and after aging treatment is conducted on the combustion chamber inner wall blank, rough turning treatment and finish machining groove milling are conducted according to a preset drawing, and the high-performance copper alloy combustion chamber inner wall is obtained.

Description

Technical Field

[0001] The present application relates to the technical field of nonferrous metal material manufacturing, and in particular to a method for manufacturing the inner wall of a high-performance copper alloy combustion chamber. Background Art

[0002] As the core component of liquid rocket engines, the combustion chamber has very stringent requirements on materials and processing. The reason why copper alloy can attract rocket engine components to use it as the lining material is that it has a higher thermal conductivity than other engineering materials. The inside of the combustion chamber is exposed to the combustion gas, and the temperature is as high as thousands of degrees. The huge heat flow must be conducted through the inner wall of the combustion chamber. Therefore, the use of high thermal conductivity materials is an effective way to significantly reduce the inner wall temperature and its gradient and increase the material life.

[0003] The methods for improving the strength of traditional copper alloys (such as CuCrZr, CuCr) include deformation strengthening, solid solution strengthening and precipitation strengthening. However, at high temperatures, the metal will undergo recrystallization, coarsening and dissolution of the second phase, or growth of intermetallic compounds. Therefore, the above strengthening methods will fail at high temperatures. After experiencing high temperatures, it is very easy to soften and deform, making it difficult to meet the requirements.

[0004] The traditional forging-machining process is used to manufacture the inner wall of the combustion chamber. This process has problems such as low material utilization, long delivery cycle, and high production cost. Therefore, it has greatly restricted the development of my country's liquid rocket engines. Summary of the invention

[0005] To solve the above problems, the present invention provides a method for manufacturing the inner wall of a high-performance copper alloy combustion chamber, which solves the material and processing problems currently faced by combustion chamber manufacturing, while improving material utilization and reducing manufacturing costs.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows: A method for manufacturing an inner wall of a high-performance copper alloy combustion chamber comprises the following steps: After CuCrNb powder is used for sheath extrusion, a blank is obtained; the blank is ground, and after the grinding is completed, it enters a rolling mill for rolling treatment, and after the rolling treatment, the remaining copper edge is removed to obtain a plate; The plate is cut based on a preset product blank size, and then the plate is bent using a mold to obtain two semi-cylindrical thin-walled tubes; After the two semi-cylindrical thin-walled tubes are spliced ​​together, stir friction welding is performed to obtain welded thin-walled copper; The welded thin-walled copper is subjected to cutting and spinning to obtain a combustion chamber wall blank; After the combustion chamber inner wall blank is subjected to aging treatment, rough turning treatment and fine milling are performed according to a preset drawing to obtain a high-performance copper alloy combustion chamber inner wall.

[0007] As some optional embodiments of the present application, the CuCrNb powder includes the following components in weight percentage: Cr≤6.5wt%, Nb≤5.8wt%, and the balance is copper.

[0008] As some optional implementations of the present application, the sheath used for the sheath extrusion is made of pure copper material, and the extrusion temperature is 850°C-950°C.

[0009] As some optional embodiments of the present application, the thickness of the blank is 15mm-20mm.

[0010] As some optional embodiments of the present application, the rolling process includes multiple rolling passes, and the deformation amount of each rolling is 8%-12%.

[0011] As some optional implementations of the present application, the thickness of the plate after the multiple rolling passes is 10mm-15mm.

[0012] As some optional implementation modes of the present application, after the multiple rolling passes, an annealing treatment is performed, and the annealing treatment refers to annealing treatment at 600° C. for 2 hours.

[0013] As some optional embodiments of the present application, the welding pressure during the stir friction welding process is controlled at 1.5mm-2.5mm, the inclination angle is 2°-2.5º, the rotation speed of the stir friction head is 600rpm-1000rpm, and the moving speed of the stir friction head is 100mm / min-200 mm / min.

[0014] As some optional embodiments of the present application, the parameters of the spinning process are: heating temperature is 600°C-700°C, spinning is carried out in two times, and the pressing amount is 3mm-6mm per pass.

[0015] As some optional implementations of the present application, the parameters of the aging treatment are: treatment temperature is 550°C-650°C, and treatment time is 4h.

[0016] Compared with the prior art, the technical advantages of the present invention are mainly reflected in: The manufacturing process involved in the present invention includes: using CuCrNb alloy powder for sheathing extrusion, followed by surface grinding. After the grinding process is completed, the material is sent to a rolling mill for rolling treatment, and the excess copper edges are removed after rolling to obtain a plate. Based on the pre-set product blank size, the plate is accurately cut, and then the plate is bent into shape using a mold to form two semi-cylindrical thin-walled tubes. After the two semi-cylindrical thin-walled tubes are spliced, a stir friction welding process is performed to obtain a welded thin-walled copper material. The welded thin-walled copper is cut and spun to obtain a blank for the inner wall of the combustion chamber. Finally, the combustion chamber inner wall blank is subjected to aging treatment, and rough turning and fine milling processes are performed according to the predetermined drawings to finally obtain a high-performance copper alloy combustion chamber inner wall.

[0017] According to the technical solution of the present invention, the process significantly reduces the initial feed weight. Taking the traditional process for preparing a combustion chamber as an example, the weight of the finished product is about ten kilograms, but the initial feed may exceed one ton, resulting in extremely low material utilization; while the use of the spinning technology described in this application only requires about 300 kilograms of feed, and the material utilization rate is significantly improved; that is, the traditional forging process feed is generally a round ingot cast, which is changed into a solid blank close to the product appearance through forging, so the feed is heavier; and the blank required for the spinning technology is a thin-walled tube, so the feed weight can be greatly reduced. In addition, the performance difference is mainly reflected in the performance comparison with the outer wall after welding. After the traditional CuCrZr combustion chamber is welded to the outer wall, its strength is greatly reduced, and the yield strength is less than 100MPa, while the performance of the CuCrNb combustion chamber of this application after welding does not exceed 10%, so it is suitable for high-thrust rocket engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the process flow of a method for manufacturing the inner wall of a high-performance copper alloy combustion chamber involved in an embodiment of the present application. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] As the core component of liquid rocket engines, the combustion chamber places extremely stringent requirements on the materials and processing technologies used. It not only needs to withstand extreme temperatures and pressures, but also needs to ensure stability and reliability during long-term operation. Copper alloys are widely selected as lining materials for rocket engine components because they have better thermal conductivity than other engineering materials. This material can effectively conduct heat away from the inside of the combustion chamber, thereby protecting other structures of the combustion chamber from direct damage by high-temperature gases. The inside of the combustion chamber is directly exposed to the environment of high-temperature gases, and the temperature can reach thousands of degrees Celsius, so a huge heat flow must be conducted through the inner wall of the combustion chamber. The use of materials with high thermal conductivity is an effective strategy to reduce the temperature of the inner wall and its gradient and increase the service life of the material. This not only helps to improve the overall performance of the rocket engine, but also extends its working cycle in space missions and ensures the smooth completion of the mission.

[0021] In the field of materials science, the strength improvement of traditional copper alloy materials such as CuCrZr alloy and CuCr alloy mainly depends on several key strengthening mechanisms. These mechanisms include deformation strengthening, solid solution strengthening and precipitation strengthening. Deformation strengthening is to improve the strength of materials by introducing a large number of dislocations through plastic deformation; solid solution strengthening is to dissolve other elements in the copper matrix to form a solid solution, thereby increasing the lattice distortion and improving the strength of the material; and precipitation strengthening is to form fine second-phase particles in the copper alloy, which hinder the movement of dislocations and thus improve the strength of the material. However, when these copper alloy materials are exposed to high temperature environments, their strengthening effect will be significantly affected. Under the action of high temperature, metal materials will undergo a series of microstructural changes, including recrystallization, coarsening and dissolution of second-phase particles, and growth of intermetallic compounds. These changes will cause the microstructure of the material to degrade, making the original strengthening means ineffective at high temperatures. Due to the degradation of these microstructures, the materials are prone to softening and deformation after high temperature, which makes it difficult for them to meet the actual application requirements of working in high temperature environments.

[0022] In the current technical process, traditional CuCrZr / CuCr alloy materials are first smelted to produce the required ingots; then, these ingots are forged to form the blanks of the inner wall of the combustion chamber; then, in order to improve the performance of the material, the blanks need to be annealed; after the treatment, rough turning is carried out to meet the preliminary dimensional requirements; finally, the inner wall of the combustion chamber is ensured to achieve the precise size and surface quality by finishing milling. Although this series of steps can complete the manufacture of the combustion chamber, there are some significant problems in the process. Among them, low material utilization is a major problem, because a large amount of scrap is generated during the processing, resulting in a waste of raw materials. In addition, the entire production cycle is relatively long, which not only prolongs the time to market of the product, but also increases the cost of inventory and capital occupation. High production cost is also a challenge faced by the process, due to low material utilization and long production cycle, resulting in high direct and indirect costs. The existence of these problems has seriously restricted the development and competitiveness of my country's liquid rocket engine technology.

[0023] In order to address and solve the above-mentioned problems, the present invention proposes an innovative method for manufacturing the inner wall of a high-performance copper alloy combustion chamber. This method is particularly aimed at the challenges of material selection and processing technology encountered in the current combustion chamber manufacturing process, and is committed to improving the utilization rate of materials and significantly reducing the cost of the entire manufacturing process. By adopting the method proposed in the present invention, the performance of the combustion chamber can be effectively enhanced, its service life can be significantly extended, and cost reduction can be achieved during the production process. This series of improvements and optimizations will provide solid and powerful technical support and guarantee for the development of my country's liquid rocket engine technology.

[0024] Specifically, the manufacturing process involved in the present application includes: using CuCrNb alloy powder for sheathing extrusion, followed by surface grinding. After the grinding process is completed, the material is sent to the rolling mill for rolling treatment, and the excess copper edges are removed after rolling to obtain a plate. Based on the pre-set product blank size, the plate is precisely cut, and then the plate is bent into shape using a mold to form two semi-cylindrical thin-walled tubes. After the two semi-cylindrical thin-walled tubes are spliced, a stir friction welding process is performed to obtain the welded thin-walled copper material. The welded thin-walled copper is cut and spun to obtain the blank of the inner wall of the combustion chamber. Finally, the combustion chamber inner wall blank is subjected to aging treatment, and the rough turning and fine milling processes are performed according to the predetermined drawings to finally obtain a high-performance copper alloy combustion chamber inner wall.

[0025] Through in-depth analysis of the process technology scheme proposed in this application, it can be clearly observed that the process has achieved a significant reduction in the weight of the initial feed. Taking the traditional process method to prepare the combustion chamber as an example, we usually find that the final finished product weighs about ten kilograms. However, in order to achieve this finished product weight, the initial feed amount often needs to exceed one ton, which leads to very low material utilization. In contrast, when the spinning technology described in this application is adopted, the weight of the initial feed can be reduced to about 300 kilograms, and such an improvement significantly improves the material utilization. Further, the difference in performance is mainly reflected in the performance comparison after welding with the outer wall. In the traditional process, the strength of the combustion chamber made of CuCrZr material will be greatly reduced after welding with the outer wall, and the yield strength is even less than 100MPa. However, according to the CuCrNb combustion chamber of the present application, the performance decline after welding is controlled within a range of no more than 10%. Therefore, the CuCrNb combustion chamber of the present application is more stable in performance and is particularly suitable for application scenarios of large thrust rocket engines.

[0026] Specifically, the method for manufacturing the inner wall of the high-performance copper alloy combustion chamber described in the present application is as follows: Figure 1 As shown, the following steps are included: Step S10, using CuCrNb powder to perform sheath extrusion to obtain a blank; grinding the blank, and after grinding, entering a rolling mill for rolling treatment, and after rolling treatment, removing the remaining copper edge to obtain a plate.

[0027] In a further embodiment, the CuCrNb powder comprises the following components in weight percentage: Cr≤6.5wt%, Nb≤5.8wt%, and the balance is copper; the sheath used in the sheath extrusion is pure copper material, the extrusion temperature is 850°C-950°C, and the billet thickness is 15mm-20mm.

[0028] Traditional copper alloy processing often uses a single alloy material to obtain plates through casting or simple rolling. This type of technology has the following shortcomings: ordinary copper alloys are prone to softening in high temperature environments, affecting the mechanical properties of the material; the material directly obtained by casting has the problem of uneven structure, which affects the subsequent mechanical processing performance; the traditional rolling process has a small deformation amount and requires multiple processing steps, which is cumbersome and has a long cycle.

[0029] In order to solve the above technical problems, the introduction of Cr (≤6.5wt%) and Nb (≤5.8wt%) in the alloy composition described in this application effectively improves the high temperature strength and corrosion resistance of the material; in addition, the CuCrNb powder described in this application is extruded through a sheathing process to ensure the density and composition uniformity of the material. In a further scheme, a pure copper sheath is used in the sheathing extrusion process described in this application, and the extrusion temperature is controlled at 850℃-950℃, which is beneficial to the fluidity and structural uniformity of the alloy; through the post-extrusion rolling process, combined with multiple rolling deformations (8%-12%), a plate with higher density and excellent mechanical properties is obtained, and the thickness is precisely controlled at 10mm-15mm. The residual copper on the edge after extrusion and rolling in this application is removed, which further ensures the surface quality and flatness of the plate, which is beneficial to subsequent processing.

[0030] Step S20: cutting the plate according to a preset product blank size, and then bending the plate by using a mold to obtain two semi-cylindrical thin-walled tubes.

[0031] In a further scheme, the rolling process includes multiple rolling passes, and the deformation of each rolling pass is 8%-12%; the thickness of the plate after the multiple rolling passes is 10mm-15mm; after the multiple rolling passes, annealing treatment is performed, and the annealing treatment refers to annealing treatment at 600°C for 2h.

[0032] In the manufacturing process of thin-walled tubes, deformation and cracking are prone to occur during material processing, especially in high-strength alloy materials; the cutting and bending processes lack precise control, resulting in material waste and low dimensional accuracy.

[0033] In order to solve the above technical problems, this application cuts based on the preset product blank size to reduce material waste and improve production efficiency. And the plate is bent into a semi-cylindrical thin-walled tube using a mold, which can accurately control the shape and size of the thin-walled tube. Then, by reasonably designing the bending process, the problem of cracking or rebound deformation of the material during the bending process is avoided. In addition, this application adopts multiple rolling passes, with a deformation of 8%-12% in each pass, which effectively disperses the processing stress, reduces internal defects of the plate, and improves the uniformity and strength of the material. After rolling is completed, it is annealed at 600℃ for 2h to effectively eliminate the residual stress inside the material and improve the subsequent processing performance.

[0034] Step S30: After the two semi-cylindrical thin-walled tubes are spliced ​​together, stir friction welding is performed to obtain welded thin-walled copper.

[0035] In a further embodiment, the welding pressure during the friction stir welding process is controlled at 1.5 mm-2.5 mm, the inclination angle is 2°-2.5º, the rotation speed of the friction stir head is 600 rpm-1000 rpm, and the moving speed of the friction stir head is 100 mm / min-200 mm / min.

[0036] Traditional welding methods such as fusion welding are prone to problems such as weld porosity, cracks, and coarsening of the heat-affected zone when used on thin-walled copper alloys; and the control accuracy during welding is low, resulting in unstable welding quality.

[0037] In order to solve the above technical problems, this application adopts solid phase welding technology, namely stir friction welding, which effectively avoids the porosity and crack problems caused by fusion welding and ensures the welding quality. And the welding parameters are optimized, namely: the downward pressure is controlled at 1.5mm-2.5mm to ensure the density and strength of the welding; the inclination angle is 2°-2.5° to reduce the heat input in the welding area and reduce the width of the heat affected zone; the rotation speed is 600rpm-1000rpm and the moving speed is 100-200mm / min to ensure the uniformity of welding and surface quality. In addition, the spliced ​​thin-walled tube has good structural integrity and its strength is close to that of the parent material, which meets the high temperature and high pressure working conditions of the inner wall of the combustion chamber.

[0038] Step S40, cutting and spinning the welded thin-walled copper to obtain a combustion chamber inner wall blank.

[0039] In a further embodiment, the parameters of the spinning process are as follows: heating temperature is 600°C-700°C, spinning is performed in two times, and the pressing amount is 3mm-6mm per time.

[0040] In the traditional spinning process, processing thin-walled tubes is prone to uneven wall thickness, cracking and residual stress; the spinning temperature control is not accurate, which affects the processing performance of the material.

[0041] In order to solve the above technical problems, the present application optimizes the spinning parameters, that is, the heating temperature is controlled at 600℃-700℃, which effectively improves the plasticity of the material and reduces the risk of cracking; a two-step spinning process is adopted, with a downward pressure of 3mm-6mm per pass, to gradually achieve dimensional control and wall thickness uniformity; through a reasonable spinning process, the dimensional accuracy and wall thickness uniformity of the thin-walled tube are effectively guaranteed, providing high-quality blanks for subsequent processing.

[0042] Step S50, after aging treatment of the combustion chamber inner wall blank, rough turning treatment and fine milling according to preset drawings are performed to obtain a high-performance copper alloy combustion chamber inner wall.

[0043] In a further embodiment, the parameters of the aging treatment are: treatment temperature is 550°C-650°C, and treatment time is 4 hours.

[0044] Copper alloys tend to soften at high temperatures, and traditional aging treatments have inaccurate temperature and time control, resulting in unstable performance. Large deviations in wall thickness occur during finishing, affecting product performance.

[0045] In order to solve the above technical problems, this application optimizes the aging treatment parameters, that is, treating at 550℃-650℃ for 4h, which can effectively improve the strength and hardness of the material while ensuring high temperature resistance. Rough turning and fine milling are combined, strictly in accordance with the preset drawings, to ensure the dimensional accuracy and surface quality of the inner wall of the combustion chamber. Through optimized aging treatment and fine machining processes, the inner wall of the combustion chamber with high strength, high thermal conductivity, meeting the requirements of extreme working conditions, high surface smoothness, and helping to improve combustion efficiency is obtained.

[0046] It can be seen that the technical solution of this application solves the problems of low material strength, poor process accuracy and unstable welding quality in the prior art by optimizing alloy materials, improving extrusion rolling process, introducing stir friction welding, and optimizing parameters of spinning and finishing. The overall technical solution improves the performance of the inner wall of the combustion chamber, especially showing excellent mechanical properties and service life under high temperature and high pressure environment.

[0047] In order to facilitate the understanding of the technical solution of the present application by those skilled in the art, the technical solution of the present application is further described in detail below in conjunction with specific implementation methods: Example 1 Step S10, using CuCrNb powder to perform sheath extrusion to obtain a blank; grinding the blank, and after grinding, entering a rolling mill for rolling treatment, removing the remaining copper edges after rolling treatment to obtain a plate; the CuCrNb powder includes the following weight percentage components: Cr 3.2wt%, Nb 2.8wt%, and the balance copper; the sheath used in the sheath extrusion is pure copper material, the extrusion temperature is 920°C, and the blank thickness is 18mm.

[0048] Step S20, cutting the plate based on the preset product blank size, and then bending the plate using a mold to obtain two semi-cylindrical thin-walled tubes; the rolling process includes multiple rolling passes, and the deformation of each rolling is 9%; the thickness of the plate after the multiple rolling passes is 12 mm; after the multiple rolling passes, annealing treatment is performed, and the annealing treatment refers to annealing treatment at 600°C for 2 hours.

[0049] Step S30, after the two semi-cylindrical thin-walled tubes are spliced, stir friction welding is performed to obtain welded thin-walled copper; the welding pressure during the stir friction welding is controlled at 2mm, the inclination angle is 2°-2.5º, 800rpm, and the moving speed of the stir friction head is 150mm / min.

[0050] Step S40, cutting and spinning the welded thin-walled copper to obtain a combustion chamber inner wall blank; the spinning parameters are: heating temperature is 650°C, spinning is performed in two times, and the pressing amount is 4mm per pass.

[0051] Step S50, after aging treatment of the combustion chamber inner wall blank, rough turning treatment and fine milling groove according to the preset drawing are performed to obtain the high-performance copper alloy combustion chamber inner wall. The aging treatment parameters are: treatment temperature is 600°C, and treatment time is 4h.

[0052] Comparative Example 1 1) Using traditional CuCrZr material (existing technology, not specifically limited here) to smelt and obtain ingots; 2) Forging the inner wall blank of the combustion chamber; the forging temperature is 880℃-920℃, and the forging holding time is 3h-5h; 3) Annealing treatment; the annealing temperature is 450°C and the annealing time is 2h-4h; 4) Rough turning; 5) Finishing of slot milling.

[0053] Experimental Example 1 The high-performance copper alloy combustion chamber inner wall obtained in Example 1 and the copper alloy combustion chamber inner wall obtained in Comparative Example 1 were subjected to strength performance tests. The test standard is: GB / T 228.1-2021. The specific test plan is: testing the room temperature mechanical properties of the combustion chamber inner wall before and after welding.

[0054] The test results are as follows: See Table 1.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

[0056] Table 1 Mechanical properties at room temperature before and after welding

Claims

1. A method for manufacturing the inner wall of a high-performance copper alloy combustion chamber, characterized in that: The following steps are involved: After the CuCrNb powder is used for sheath extrusion, a blank is obtained; the blank is ground, and after the grinding is completed, it enters a rolling mill for rolling treatment, and after the rolling treatment, the remaining copper edge is removed to obtain a plate; The plate is cut based on a preset product blank size, and then the plate is bent using a mold to obtain two semi-cylindrical thin-walled tubes; After the two semi-cylindrical thin-walled tubes are spliced ​​together, stir friction welding is performed to obtain welded thin-walled copper; The welded thin-walled copper is subjected to cutting and spinning to obtain a combustion chamber wall blank; After the combustion chamber inner wall blank is subjected to aging treatment, rough turning treatment and fine milling are performed according to a preset drawing to obtain a high-performance copper alloy combustion chamber inner wall.

2. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The CuCrNb powder comprises the following components in weight percentage: Cr≤6.5wt%, Nb≤5.8wt%, and the balance is copper.

3. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The sheath used in the sheath extrusion is made of pure copper material, and the extrusion temperature is 850°C-950°C.

4. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The thickness of the blank is 15mm-20mm.

5. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The rolling process includes multiple rolling passes, and the deformation amount of each rolling is 8%-12%.

6. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 5, characterized in that: The thickness of the plate after the multiple rolling passes is 10 mm to 15 mm.

7. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 5, characterized in that: After the multiple rolling passes, an annealing treatment is performed, wherein the annealing treatment is performed at 600° C. for 2 hours.

8. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The welding pressure during the friction stir welding process is controlled at 1.5 mm-2.5 mm, the inclination angle is 2°-2.5°, the rotation speed of the friction stir head is 600 rpm-1000 rpm, and the moving speed of the friction stir head is 100 mm / min-200 mm / min.

9. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The parameters of the spinning process are: heating temperature is 600° C.-700° C., spinning is performed in two times, and the pressing amount is 3mm-6mm per time.

10. The method for manufacturing the inner wall of a high-performance copper alloy combustion chamber according to claim 1, characterized in that: The parameters of the aging treatment are: treatment temperature is 550° C.-650° C., and treatment time is 4 hours.

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