Red copper water-cooling panel and electron beam welding preparation process
By using the electron beam welding process for copper water-cooled panels, all weld seams of the water-cooled panels are melted and welded with a high-energy electron beam, which solves the problem of low weld quality in existing technologies, achieves high-quality welding results, and meets the high-pressure requirements of the ramjet engine ground test system.
Patent Information
- Application Number
- CN202511702827.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-01-13
AI Technical Summary
The weld quality of parts manufactured by silver-copper argon arc welding using existing copper water-cooled panels is not high, often exhibiting welding defects such as porosity, slag inclusions, and lack of fusion, which cannot meet the high-pressure requirements of the ramjet engine ground test system.
The copper water-cooled panel is prepared using an electron beam welding process. All welds between the bottom and top of the water-cooled panel are melted and welded using a high-energy electron beam. The panel is then fixed using a welding fixture. No preheating or welding wire is required. The panel is then fixed again using a beam welding fixture to ensure welding quality.
The welding quality was improved, welding deformation was reduced, and the welding depth was controllable and adjustable, ensuring the pressure-bearing capacity of the copper water-cooled panel and meeting the test requirements of the ramjet engine ground test system.
Smart Images
Figure CN121315413A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of welding technology, and particularly relates to a copper water-cooled panel and an electron beam welding process. Background Technology
[0002] The water-cooled panel of the heater in the ground test system of ramjet engine is crucial. Existing water-cooled panels are often composed of a cover plate and a base plate.
[0003] In the current manufacturing process of water-cooled panels, the designed water-cooled panel is generally separated into a cover plate and a base plate according to a 3D model. The base plate and the cover plate are then assembled and heated before silver-copper argon arc welding. After being welded together by silver-copper argon arc welding, the parts undergo stress-relief annealing to eliminate welding stress, followed by precision machining and machining center processing of mounting holes, cooling water tanks, and nozzles to complete the part machining.
[0004] However, the silver-copper welds produced by this silver-copper argon arc welding method are sometimes of poor quality, especially for water-cooled panels with larger diameters (particularly those over 300mm). These panels often exhibit welding defects such as porosity, slag inclusions, and incomplete fusion, and cannot withstand high pressure (the flow channel needs to withstand 5MPa pressure to ensure no leakage or deformation). Therefore, they cannot meet the testing requirements of the ramjet engine ground test system. Summary of the Invention
[0005] This invention provides a copper water-cooled panel and an electron beam welding process to solve the problems of poor weld quality, frequent porosity, slag inclusions, and lack of fusion in parts processed by silver-copper argon arc welding of existing copper water-cooled panels, which cannot withstand high pressure and cannot meet the testing requirements of ramjet engine ground test systems.
[0006] This invention is implemented as follows: On one hand, this invention also provides a process for preparing a copper water-cooled panel using electron beam bonding, comprising: The designed water-cooled panel is separated into a water-cooled panel cover and a water-cooled panel bottom according to the 3D model; A welding fixture plate is set on one side of the bottom of the water-cooled panel. The welding fixture plate is provided with mounting holes that match the concentric cylinders. The bottom of the water-cooled panel and the cover of the water-cooled panel are fixed for the first time through the process holes on the bottom of the water-cooled panel and the mounting holes of the welding fixture plate. Multiple bundle welding fixtures are evenly arranged in the circumferential direction of the welding fixture plate, and the bottom of the water-cooled panel is fixed in a secondary manner through the multiple bundle welding fixtures. All welds between the bottom of the water-cooled panel and the top of the water-cooled panel are fused and welded using high-energy electron beams. After removing the welding fixtures and welding plate, the copper water-cooled panel is obtained.
[0007] Optionally, the manufacturing process further includes: enlarging the separate water-cooled panel cover and water-cooled panel bottom models to (1+k)% using SOLIDWORK software, and then leaving allowances on one side surface of the water-cooled panel cover, one side surface of the water-cooled panel bottom, and the nozzles on the water-cooled panel bottom to facilitate subsequent finishing, where k is the shrinkage coefficient.
[0008] Optionally, the manufacturing process further includes: the welded copper water-cooled panel is precision machined again, and then the spray holes, mounting holes and cooling water tanks are machined by a machining center to complete the processing.
[0009] Optionally, the shrinkage coefficient k is checked before the machining center processes the nozzles. The steps include: Measure the pitch circle diameter at multiple points and compare it with the design dimension to ensure that the deviation is no greater than 0.4. The wall thickness of the nozzles on the processed parts is inspected. If the deviation of the nozzle wall thickness is no greater than ±0.2, the shrinkage coefficient k meets the requirements, and the pressure resistance of the copper water-cooled panel meets the usage requirements.
[0010] Optionally, the welding fixture plate is a fixed plate with a diameter larger than the bottom of the water-cooled panel. The welding fixture plate has mounting holes that match the concentric cylinders of the bottom of the water-cooled panel. Multiple bundle welding fixtures are evenly arranged in the circumferential direction of the welding fixture plate.
[0011] Optionally, the beam welding fixture includes a "7"-shaped fixing block, which is disposed in a fixing groove of the welding fixture plate and is fastened to the welding fixture plate by bolts.
[0012] On the other hand, the present invention provides a copper water-cooled panel, including a water-cooled panel cover and a water-cooled panel bottom. A plurality of concentric cylinders are evenly arranged on the water-cooled panel bottom, and a plurality of concentric holes are evenly arranged on the water-cooled panel cover. The concentric cylinders are fitted with the concentric holes, and the water-cooled panel cover and the water-cooled panel bottom are installed through the concentric holes and concentric cylinders. The water-cooled panel cover is sleeved on top of the water-cooled panel bottom.
[0013] Optionally, the water-cooled panel cover has two waist-shaped water channels on opposite sides, the waist-shaped water channels being inlet and outlet water channels, and the curvature of the waist-shaped water channels being 80 degrees.
[0014] Optionally, the bottom of the water-cooled panel is provided with an oblong groove that mates with the protruding end of the water-cooled panel cover. The curvature of the oblong groove is 100 degrees, and the concentric cylinder is a hollow cylinder with process holes.
[0015] The beneficial effects achieved by this invention are as follows: This invention provides a process for preparing a copper water-cooled panel by electron beam welding, comprising: separating a designed water-cooled panel into a water-cooled panel cover and a water-cooled panel bottom according to a three-dimensional model; setting a welding fixture plate on one side of the water-cooled panel bottom, the welding fixture plate having mounting holes matching concentric cylinders, and fixing the water-cooled panel bottom and water-cooled panel cover for the first time through the process holes on the water-cooled panel bottom and the mounting holes on the welding fixture plate; uniformly arranging multiple electron beam welding fixtures in the circumferential direction of the welding fixture plate, and fixing the water-cooled panel bottom for the second time through the multiple electron beam welding fixtures; all welds between the water-cooled panel bottom and the water-cooled panel cover are melted and welded using a high-energy electron beam; removing the electron beam welding fixtures and the welding fixture plate to obtain the copper water-cooled panel. This electron beam welding process for copper water-cooled panels involves using high-energy electron beams to melt and weld all welds between the bottom and top of the water-cooled panel. No preheating or welding wire is required. The welding process is fixed using welding fixtures, resulting in minimal welding deformation, controllable and adjustable welding depth, and stable and reliable welding quality. This effectively improves the pressure-bearing requirements of the copper water-cooled panel, thereby meeting the testing requirements of the ramjet engine ground test system. Attached Figure Description
[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural diagram of a copper water-cooled panel and welding fixture plate provided by existing technology.
[0019] Figure 2 This is a top view structural diagram of a copper water-cooled panel and welding fixture plate provided by the present invention.
[0020] Figure 3 This is a three-dimensional structural diagram of a copper water-cooled panel provided by the present invention.
[0021] Figure 4 This is a top view schematic diagram of a copper water-cooled panel provided by the present invention.
[0022] Figure 5 This is a schematic diagram of the structure of the bottom of a copper water-cooled panel provided by the present invention.
[0023] Figure 6 This is a schematic diagram of the structure of a copper water-cooled panel cover provided by the present invention.
[0024] As shown in the attached figure: 1-Water-cooled panel bottom, 2-Water-cooled panel cover, 3-Welding fixture plate, 4-Bundle welding fixture, 5-Concentric cylinder, 6-Reinforcing column, 7-Concentric hole, 8-Reinforcing hole. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0026] To effectively illustrate the embodiments of the present invention, the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0027] This application discloses a process for electron beam bonding of a water-cooled copper panel, which can be referred to in the appendix. Figure 1 To be continued Figure 6 As shown, the specific steps include the following: Step S01: Separate the designed water-cooled panel into the water-cooled panel cover 2 and the water-cooled panel bottom 1 according to the 3D model; Step S02: A welding fixture plate 3 is set on one side of the bottom of the water-cooled panel 1. The welding fixture plate 3 is provided with mounting holes that match the concentric cylinder 5. The bottom of the water-cooled panel 1 and the cover of the water-cooled panel 2 are fixed for the first time through the process holes on the bottom of the water-cooled panel 1 and the mounting holes of the welding fixture plate 3. Step S03: Multiple welding fixtures 4 are evenly arranged in the circumferential direction of the welding fixture plate 3, and the bottom of the water-cooled panel 1 is fixed in a secondary manner by the multiple welding fixtures 4. In specific implementation, the welding fixture plate 3 is a fixed plate with a diameter larger than that of the bottom 1 of the water-cooled panel. The welding fixture plate 3 has mounting holes that match the concentric cylinders 5 of the bottom 1 of the water-cooled panel. Multiple welding fixtures 4 are evenly arranged along the circumference of the welding fixture plate 3. Specifically, as shown... Figure 1 As shown, the welding fixture 4 includes a "7"-shaped fixing block, which is set in the fixing groove of the welding fixture plate 3 and is fastened to the welding fixture plate 3 by bolts.
[0028] Of course, in the specific implementation process, in order to ensure the uniform fixation of the welding fixture plate 3 on the water-cooled panel bottom 1, thereby ensuring the welding effect of the water-cooled panel bottom 1 and the water-cooled panel cover 2, the fixing block includes at least 8 blocks evenly distributed in the circumferential direction of the welding fixture plate 3 to fix the water-cooled panel bottom 1. In the specific implementation process, the fixing block can include 18 blocks to fix the water-cooled panel bottom 1. Of course, the fixing of the water-cooled panel bottom 1 is mainly achieved by tightening the bolts to bring it closer to the welding fixture plate 3, thereby fixing the water-cooled panel bottom 1. Specifically, the fixing of the water-cooled panel bottom 1 and the water-cooled panel cover 2 can also be achieved by bolts passing through the mounting holes and process holes of the communication device, thereby fixing the water-cooled panel cover 2 and the water-cooled panel bottom 1, which facilitates the stability of subsequent electron beam welding.
[0029] Step S04: All welds between the bottom of the water-cooled panel 1 and the top of the water-cooled panel 2 are fused and welded using a high-energy electron beam. Step S05: Remove the welding fixture 4 and welding fixture plate 3 to obtain the copper water-cooled panel.
[0030] In the specific implementation process, in step S01, the preparation process also includes: enlarging the models of the separate water-cooled panel cover 2 and water-cooled panel bottom 1 to (1+k)% using SOLIDWORK software, and then leaving allowance on one side surface of the water-cooled panel cover 2, one side surface of the water-cooled panel bottom 1, and the nozzles of the water-cooled panel bottom 1 to facilitate subsequent finishing, where k is the shrinkage coefficient.
[0031] In the specific implementation process, based on step S05, the electron beam welding preparation process of the copper water-cooled panel disclosed in this application also includes: the copper water-cooled panel after welding is precision machined again, and then the spray holes, mounting holes and cooling water tanks are processed by the machining center to complete the processing.
[0032] Of course, in the actual implementation process, the shrinkage coefficient k is checked before the machining center processes the nozzles. The steps include: Step S1: Measure the pitch circle diameter at multiple locations and compare it with the design dimension to ensure that the deviation is no greater than 0.4. Step S2: Inspect the wall thickness of the nozzles on the machined parts. If the deviation of the nozzle wall thickness is no greater than ±0.2, the shrinkage coefficient k meets the requirements. Then the pressure bearing capacity of the copper water-cooled panel meets the usage requirements and can meet the testing requirements of the copper water-cooled panel, thereby meeting the testing requirements of the ramjet engine ground test system.
[0033] The electron beam welding process for preparing a copper water-cooled panel provided in the above embodiment involves high-energy electron beam melting welding of all welds between the bottom 1 and the top 2 of the water-cooled panel. No preheating or welding wire is required. The welding process is fixed by a welding fixture, resulting in minimal welding deformation, controllable and adjustable welding depth, and stable and reliable welding quality. This process can improve the pressure resistance of the copper water-cooled panel and thus meet the test requirements of the ramjet engine ground test system.
[0034] In the specific implementation process, it can be done in accordance with the appendix Figures 3 to 5 The schematic diagram shown illustrates the structure of a copper water-cooled panel. It can be seen that the copper water-cooled panel is manufactured using the electron beam welding process for copper water-cooled panels provided in the above embodiment. Figures 3 to 5 As shown, the copper water-cooled panel includes a water-cooled panel cover 2 and a water-cooled panel bottom 1. The water-cooled panel bottom 1 is evenly provided with a plurality of concentric cylinders 5, and the water-cooled panel cover 2 is evenly provided with a plurality of concentric holes 7. The concentric cylinders 5 and the concentric holes 7 are fitted together. The water-cooled panel cover 2 and the water-cooled panel bottom 1 are installed through the concentric holes 7 and the concentric cylinders 5. The water-cooled panel cover 2 is fitted on top of the water-cooled panel bottom 1.
[0035] Specifically, the water-cooled panel cover 2 has two waist-shaped water channels on opposite sides, which are inlet and outlet water channels, and the curvature of the waist-shaped water channels is 80 degrees. The bottom of the water-cooled panel 1 is provided with a waist-shaped groove that mates with the protruding end of the water-cooled panel cover 2, and the curvature of the waist-shaped groove is 100 degrees. The spray hole of the bottom of the water-cooled panel 1 passes through the concentric cylinder 5.
[0036] At the same time, combined Figure 5 and Figure 6 As shown, in the specific implementation process, each of the concentric cylinders 5 on the bottom 1 of the water-cooled panel is provided with a corresponding reinforcing column 6, and each of the corresponding water-cooled panel cover 2 is provided with a reinforcing hole 8. The number of reinforcing columns 6 is the same as the number of concentric cylinders 5, and the number and position of the reinforcing columns 6 and the reinforcing holes 8 correspond. After the bottom 1 of the water-cooled panel and the cover 2 of the water-cooled panel are joined, the reinforcing columns 6 and the reinforcing holes 8 are installed to achieve the strength of the bottom 1 of the water-cooled panel and the cover 2 after welding.
[0037] Furthermore, in the specific implementation process, the concentric cylinders 5 are arranged evenly on the bottom of the water-cooled panel 1, spreading outwards in a circular pattern from the center point of the bottom of the water-cooled panel 1. Specifically, as shown in the figure... Figure 4 As shown, the number of concentric cylinders 5 on the bottom of the water-cooled panel 1 is the same as the number of concentric holes 7 on the cover of the water-cooled panel 2. The concentric cylinders on the bottom of the water-cooled panel 1 diffuse outward from the center point in a ring shape, and the number of them is 6, 12, 18 and 24 respectively, so that they form a uniform array arrangement on the bottom of the water-cooled panel.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A process for preparing a water-cooled copper panel by electron beam bonding, characterized in that, include: The designed water-cooled panel is separated into a water-cooled panel cover and a water-cooled panel bottom according to the 3D model; A welding fixture plate is set on one side of the bottom of the water-cooled panel. The welding fixture plate is provided with mounting holes that match the concentric cylinders. The bottom of the water-cooled panel and the cover of the water-cooled panel are fixed for the first time through the process holes on the bottom of the water-cooled panel and the mounting holes of the welding fixture plate. Multiple bundle welding fixtures are evenly arranged in the circumferential direction of the welding fixture plate, and the bottom of the water-cooled panel is fixed in a secondary manner through the multiple bundle welding fixtures. All welds between the bottom of the water-cooled panel and the top of the water-cooled panel are fused and welded using high-energy electron beams. After removing the welding fixtures and welding plate, the copper water-cooled panel is obtained.
2. The electron beam bonding process for water-cooled copper panels as described in claim 1, characterized in that, The manufacturing process also includes: enlarging the separate water-cooled panel cover and water-cooled panel bottom models to (1+k)% using SOLIDWORK software, and then leaving allowances on one side surface of the water-cooled panel cover, one side surface of the water-cooled panel bottom, and the spray holes of the water-cooled panel bottom to facilitate subsequent finishing, where k is the shrinkage coefficient.
3. The electron beam bonding process for preparing a water-cooled copper panel as described in claim 1, characterized in that, The manufacturing process also includes: the welded copper water-cooled panel is precision machined again, and then the spray holes, mounting holes and cooling water tanks are processed by the machining center to complete the processing.
4. The electron beam bonding process for preparing a water-cooled copper panel as described in claim 3, characterized in that, Before machining the nozzles, the shrinkage coefficient k is checked in the machining center. The steps include: Measure the pitch circle diameter at multiple points and compare it with the design dimension to ensure that the deviation is no greater than 0.
4. The wall thickness of the nozzles on the processed parts is inspected. If the deviation of the nozzle wall thickness is no greater than ±0.2, the shrinkage coefficient k meets the requirements, and the pressure resistance of the copper water-cooled panel meets the usage requirements.
5. The electron beam bonding process for preparing a water-cooled copper panel as described in claim 1, characterized in that, The welding fixture plate is a fixed plate with a diameter larger than the bottom of the water-cooled panel. The welding fixture plate has mounting holes that match the concentric cylinders on the bottom of the water-cooled panel. Multiple bundle welding fixtures are evenly arranged in the circumferential direction of the welding fixture plate.
6. The electron beam welding process for preparing a water-cooled copper panel as described in claim 5, characterized in that, The beam welding fixture includes a "7"-shaped fixing block, which is set in the fixing groove of the welding fixture plate and is fastened to the welding fixture plate by bolts.
7. A copper water-cooled panel, manufactured using the electron beam soldering process for copper water-cooled panels as described in any one of claims 1-6, characterized in that, The device includes a water-cooled panel cover and a water-cooled panel bottom. The water-cooled panel bottom has a plurality of concentric cylinders evenly arranged on it, and the water-cooled panel cover has a plurality of concentric holes evenly arranged on it. The concentric cylinders and concentric holes are fitted together, and the water-cooled panel cover and the water-cooled panel bottom are installed through the concentric holes and concentric cylinders. The water-cooled panel cover is fitted over the water-cooled panel bottom.
8. The copper water-cooled panel according to claim 7, characterized in that, The water-cooled panel cover has two waist-shaped water channels on opposite sides. The waist-shaped water channels are inlet and outlet water channels, and the curvature of the waist-shaped water channels is 80 degrees.
9. The copper water-cooled panel according to claim 8, characterized in that, The bottom of the water-cooled panel is provided with an oblong groove that mates with the protruding end of the water-cooled panel cover. The curvature of the oblong groove is 100 degrees, and the concentric cylinder is a hollow cylinder with process holes.