Manufacturing method of liquid cooling flow channel of metal case

Abstract

The invention relates to the technical field of computer heat dissipation equipment, and provides a manufacturing method of a liquid cooling flow channel of a metal case, which comprises the following steps: processing and forming a cylindrical inner ring part and a cylindrical outer ring part of the metal case, and respectively processing mutually matched grooves on corresponding contact surfaces of the inner ring part and the outer ring part; a locking piece is formed through machining, and a corresponding notch is cut in the inner ring component according to the size of the locking piece; and the machined inner ring component is installed in the outer ring component, the notch position corresponds to the non-groove area on the outer ring component, then the locking piece is placed in the notch so that the inner ring component and the outer ring component can be pressed tightly, and the grooves of the inner ring component and the outer ring component can be in butt joint to form a liquid cooling flow channel. According to the scheme, the dependence of a traditional process on welding is avoided, the processing difficulty and cost are effectively reduced, and the high-quality leakproofness of the liquid cooling flow channel of the metal case is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer heat dissipation equipment, and particularly relates to a manufacturing method of a liquid cooling flow channel of a metal case. BACKGROUND

[0002] In the manufacturing field of hard metal cases, especially difficult-to-weld metal cases such as titanium alloy cases, integrating an internal liquid cooling flow channel is a key requirement for improving heat dissipation performance. At present, the manufacturing of such liquid cooling flow channels of metal cases generally relies on welding technology. Specifically, it is usually necessary to first process each part or channel constituting the flow channel, and then splice and seal these parts into a complete sealed flow channel structure through a welding process. However, this manufacturing method relying on welding has obvious defects. First, for hard metals such as titanium alloy, the welding itself has extremely high technical requirements and complex process, resulting in high production cost. Second, the welding process may introduce a heat-affected zone, change the local performance of the material, and there is a risk of defects such as deformation, cracks or pores, which will directly affect the sealing reliability of the flow channel and the structural integrity of the case. In addition, welding has strict requirements on the production environment and operation consistency, further limiting the processing efficiency and design flexibility.

[0003] Therefore, there is an urgent need for a manufacturing method of a liquid cooling flow channel of a metal case, which can avoid welding, reduce processing difficulty and cost, and ensure high-quality sealing of the flow channel. SUMMARY

[0004] In view of the problems in the prior art that hard metal cases rely on welding to form a liquid cooling flow channel, have high cost, high technical difficulty and are prone to sealing defects, the present application provides a manufacturing method of a liquid cooling flow channel of a metal case, which comprises: forming a cylindrical inner ring part and an outer ring part of the metal case, and processing mutually matching grooves on the corresponding contact surfaces of the two parts; processing a locking piece and cutting a corresponding notch on the inner ring part according to the size of the locking piece; mounting the processed inner ring part into the outer ring part, so that the notch position corresponds to the groove-free area on the outer ring part, and then placing the locking piece into the notch to press the inner ring part and the outer ring part against each other, so that the grooves of the two parts are butted to form a liquid cooling flow channel.

[0005] In some embodiments, the mutually matching grooves processed on the corresponding contact surfaces of the two parts comprise: processing a first groove on the inner wall surface of the outer ring part, and processing a second groove on the outer wall surface of the inner ring part; wherein the cross-sectional shapes of the first groove and the second groove are complementary, and the depths of the two grooves are both less than the wall thickness of the wall body where each groove is located.

[0006] In some embodiments, the processing forms a locking piece, comprising: The locking piece is processed from a metal blank of the same material as the metal case; The working surface of the locking piece is adapted to the curvature of the inner wall surface of the inner ring component, and the axial length of the locking piece is adapted to the height of the cylinder wall of the inner ring component.

[0007] In some embodiments, the cutting of a corresponding notch on the inner ring component according to the size of the locking piece comprises: According to the width and axial length of the locking piece, the maximum width and length of the notch are determined; Based on the determined maximum width and length, a strip-shaped notch is cut through the cylinder wall of the inner ring component in the axial direction.

[0008] In some embodiments, the placing of the locking piece into the notch comprises: Inserting the locking piece into the notch in the axial direction of the inner ring component; Applying a driving force in the axial direction of the locking piece to make it radially expand in the notch to generate a pressing force between the inner ring component and the outer ring component.

[0009] In some embodiments, the placing of the processed inner ring component into the outer ring component comprises: After cooling treatment of the processed inner ring component, the shrunken inner ring component is placed into the outer ring component.

[0010] In some embodiments, the placing of the processed inner ring component into the outer ring component further comprises: After heating treatment of the outer ring component, the processed inner ring component is placed into the expanded outer ring component.

[0011] In some embodiments, the manufacturing method of the metal case liquid cooling flow channel further comprises: A metal sealing tube is arranged in the cavity of the liquid cooling flow channel, and a cooling medium is introduced into the metal sealing tube to achieve cooling.

[0012] In some embodiments, the manufacturing method of the metal case liquid cooling flow channel further comprises: Positioning bosses and positioning grooves are arranged at the axial ends of the inner ring component and the outer ring component to axially align during assembly.

[0013] In some embodiments, the manufacturing method of the metal case liquid cooling flow channel further comprises: A detection medium is introduced into the formed liquid cooling flow channel, and the pressure is increased and then kept constant to verify the airtightness.

[0014] The present application has at least the following beneficial effects: the present application proposes a manufacturing method of a metal case liquid cooling flow channel, which avoids the dependence on welding in the traditional process, effectively reduces the processing difficulty and cost, and improves the high-quality sealing of the metal case liquid cooling flow channel, realizing the core purpose of avoiding welding, reducing processing difficulty and cost, and ensuring high-quality sealing of the flow channel. Specifically, by machining matching grooves on the contact surface of the parts, the flow channel is pre-formed in a split state, eliminating the need for welding and assembly, and avoiding the high cost and technical threshold of welding. According to the size of the locking piece and the external non-groove area, the gap is accurately cut and positioned, which makes structural preparation for subsequent precision mechanical connection, replacing the welding process which has high requirements for the operating environment. By assembling the parts and locking the grooves to form the flow channel, the welding connection is completely replaced by a purely mechanical method, eliminating the welding heat-affected zone and the resulting material property changes, deformation, cracks, and porosity defects, improving the sealing reliability of the flow channel and the structural integrity of the case, and significantly improving the processing efficiency and design flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other embodiments can be obtained from these drawings without creative labor.

[0016] Figure 1 A flow chart of a manufacturing method of a metal case liquid cooling flow channel is provided for an embodiment of the present application; Figure 2 A profile schematic diagram of an outer ring part and an inner ring part is provided for another embodiment of the present application; Figure 3 A schematic diagram of a groove for forming a liquid cooling flow channel is provided for another embodiment of the present application; Figure 4 A schematic diagram of a locking piece is provided for another embodiment of the present application; Figure 5 A schematic diagram of a gap is provided for another embodiment of the present application; Figure 6 A schematic diagram of inserting an inner ring part into an outer ring part is provided for another embodiment of the present application; Figure 7 A schematic diagram of inserting a locking piece into a gap is provided for another embodiment of the present application. DETAILED DESCRIPTION

[0017] Embodiments of the present application are described below. It is to be understood, however, that the disclosed embodiments are merely examples and other embodiments can take various alternative forms.

[0018] In addition, it should be noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0019] One or more embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Based on the above purpose, an embodiment of a manufacturing method of a metal case liquid cooling flow channel is provided. Figure 1 The flow chart of a manufacturing method of a metal case liquid cooling flow channel provided by an embodiment of the present application is shown as Figure 1 As shown, it comprises: S1, processing a cylindrical inner ring part and an outer ring part of the metal case, and processing a matching groove on the corresponding contact surface of each of the two parts.

[0021] Among them, the manufacturing method of the metal case liquid cooling flow channel provided by the present application is mainly applied to the case made of difficult-to-weld metal (such as titanium alloy, high-strength aluminum alloy). The wall body of the case is designed as a split sleeve structure, including a cylindrical outer ring part and a cylindrical inner ring part that can be tightly fitted therein. The cylinder can include but is not limited to cylindrical, prismatic, cuboid and other shapes. The so-called sleeve setting refers to the outer wall surface of the inner ring part and the inner wall surface of the outer ring part are mutually adapted in shape, so that the inner ring can be contained inside the cavity surrounded by the outer ring.

[0022] Among them, the profile diagram of the outer ring part and the inner ring part is shown as Figure 2 The annular blank of the two parts can be obtained by forging or casting, and then the inner and outer profiles are accurately processed by turning, milling and other cold processing technologies, to ensure that the outer diameter of the inner ring part and the inner diameter of the outer ring part are highly consistent, so as to realize the subsequent tight fitting, without reserving assembly gap for welding.

[0023] Among them, by directly processing a matching groove on the contact surface of the inner ring part and the outer ring part that are mutually sleeved, the liquid cooling flow channel can be pre-formed in the split state of the parts, eliminating the need to splice multiple flow channel parts by welding, and avoiding the high cost and high technical threshold of the welding process itself.

[0024] S2, processing a locking piece and cutting a corresponding notch on the inner ring part according to the size of the locking piece.

[0025] In which, according to the size of the locking piece, the notch is cut, which makes a structural preparation for subsequent realization of a precise and non-welding mechanical connection, ensuring the accuracy and uniqueness of the assembly path, which creates conditions for replacing the welding environment with extremely high requirements for operation consistency.

[0026] S3, the machined inner ring part is installed into the outer ring part, the notch position is corresponded to the non-groove area on the outer ring part, then the locking piece is placed into the notch to press the inner ring part and the outer ring part tightly, and the grooves of the two are butted to form the liquid cooling flow channel.

[0027] By installing the inner ring part into the outer ring part, the notch position is corresponded to the non-groove area on the outer ring part, then the locking piece is placed into the notch to press the inner ring part and the outer ring part tightly, and the grooves of the two are butted to form the liquid cooling flow channel, which replaces the welding connection in a pure mechanical assembly and fastening manner. Not only the welding heat affected zone is eliminated, but also the defects such as material performance change, deformation, crack or porosity are avoided, which greatly improves the reliability of the flow channel sealing and the structural integrity of the case; moreover, the mechanical assembly process has more relaxed requirements for the production environment, significantly improves the processing efficiency, and gives greater flexibility in design.

[0028] The above-mentioned manufacturing method of the metal case liquid cooling flow channel avoids the dependence on welding in the traditional process, effectively reduces the processing difficulty and cost, and improves the high-quality sealing of the metal case liquid cooling flow channel, which realizes the core purpose of avoiding welding, reducing processing difficulty and cost, and ensuring high-quality sealing of the flow channel from the root.

[0029] According to several embodiments of the present application, a corresponding groove is machined on each of the contact surfaces, including: a first groove is machined on the inner wall surface of the outer ring part, and a second groove is machined on the outer wall surface of the inner ring part; wherein the cross-sectional shapes of the first groove and the second groove are complementary, and the depths of the two are both less than the wall thickness of the wall body where each groove is located.

[0030] In a specific embodiment, the first groove is milled or engraved on the inner wall surface of the outer ring part, and the second groove is machined on the outer wall surface of the inner ring part. In order to ensure perfect splicing, the cross-sectional shapes of the first groove and the second groove are designed in a complementary relationship. For example, the cross sections of the two can both be semicircular, and after being folded together, a complete circular flow channel is formed; or both are rectangular, and after being folded together, a square flow channel is formed. Importantly, the depth of each groove must be less than the wall thickness of the wall body where it is located, in order to ensure the structural strength of the machined part and avoid breakage under pressure.

[0031] In another specific embodiment, the schematic diagram of the groove for forming the liquid cooling flow channel is as shown in Figure 3As shown, the rectangle here is only illustrative, and the inner ring member and the outer ring member are in a cylindrical structure in the specific embodiment, and the black part is the groove for forming the liquid cooling flow channel. Specifically, grooves matched with each other are milled or engraved on the inner wall surface of the outer ring member and the outer wall surface of the inner ring member. The matching here refers to that, after the inner ring member is correctly installed into the outer ring member, the two sets of grooves can be accurately aligned in the three-dimensional space, thereby splicing to form a complete and continuous pipeline cavity in cross section, that is, the liquid cooling flow channel is formed. In the specific implementation, it is usually necessary to use numerical control machining technology and cooperatively program the machining paths of the two members based on a unified design drawing to achieve this purpose. For example, when preparing the numerical control program for machining the grooves on the inner wall surface of the outer ring member, the tool path is consciously controlled so that the tool does not cut in a certain set circumferential angle range, thereby reserving a continuous and smooth original surface in this region as an assembly area, which corresponds to the gap when the inner ring member is installed into the outer ring member.

[0032] According to some embodiments of the present application, the machining of the locking member includes: machining the locking member from a metal blank of the same material as the metal case; wherein the working surface of the locking member is adapted to the curvature of the inner wall surface of the inner ring member, and the axial length of the locking member is adapted to the height of the cylinder wall of the inner ring member.

[0033] In one specific embodiment, a metal blank of the same material or similar thermal expansion coefficient as the case body is used for machining, such as a titanium alloy case, a titanium alloy blank is used. When machining, the curvature of the working surface of the locking member needs to be adapted to the curvature of the inner wall surface of the inner ring member, which can be achieved by copying machining. In one specific example, the locking member is a wedge-shaped block, as shown. Figure 4 At the same time, its axial length needs to be machined to adapt to the height of the cylinder wall of the inner ring member to ensure that the locking force can be uniformly distributed along the entire height.

[0034] According to some embodiments of the present application, the corresponding gap is cut on the inner ring member according to the size of the locking member, including: determining the maximum width and length of the gap according to the width and axial length of the locking member; based on the determined maximum width and length, cutting a strip-shaped gap penetrating the cylinder wall of the inner ring member along the axial direction of the inner ring member.

[0035] In one specific embodiment, the size of the gap is determined based on the size of the machined locking member. Specifically, the minimum width required by the gap is determined according to the width of the locking member, and the length of the gap is determined according to the axial length thereof. Then, a linear cutting or milling process is used to cut a strip-shaped gap penetrating the cylinder wall of the inner ring member along the axial direction of the inner ring member, as shown. Figure 5 The size of the gap needs to be slightly larger than the corresponding size of the locking member to facilitate insertion.

[0036] According to some embodiments of the present application, the method for manufacturing the liquid cooling flow channel of the metal case further comprises: setting a positioning boss and a positioning groove at the axial end of the inner ring part and the outer ring part to achieve axial alignment during assembly.

[0037] As a specific embodiment, a positioning structure is set at the axial end (e.g. the bottom end surface) of the inner ring part and the outer ring part. For example, an annular positioning boss is machined on the inner bottom surface of the outer ring part, and a corresponding annular positioning groove is machined on the bottom end of the inner ring part. During assembly, the boss is inserted into the groove, and the initial axial and circumferential alignment of the two parts is automatically achieved.

[0038] According to some embodiments of the present application, the method for manufacturing the liquid cooling flow channel of the metal case further comprises: setting a positioning boss and a positioning groove at the axial end of the inner ring part and the outer ring part to achieve axial alignment during assembly.

[0039] In a specific embodiment, after the machining of the inner ring part and the outer ring part is completed, the assembly stage is entered, that is, the inner ring part is assembled into the outer ring part, as shown in Figure 6 To reduce the assembly resistance of the tight fit, a temperature difference assembly method can be used. As a feasible embodiment, the inner ring part can be placed in a low-temperature environment (such as liquid nitrogen) for temperature reduction treatment, so that it shrinks radially; and / or the outer ring part can be placed in a heating device (such as an oven) for temperature increase treatment, so that it expands radially. Then, while the temperature difference exists, the machined inner ring part is assembled into the outer ring part. This process can be guided by the positioning boss and groove described above.

[0040] According to some embodiments of the present application, the method for manufacturing the liquid cooling flow channel of the metal case further comprises: setting a positioning boss and a positioning groove at the axial end of the inner ring part and the outer ring part to achieve axial alignment during assembly.

[0041] In a specific embodiment, the machined locking piece (wedge-shaped block) is inserted into the pre-cut notch along the axial direction (usually vertical direction) of the inner ring part, as shown in Figure 7 Then, a driving force is applied along the axial direction of the locking piece, for example, a copper hammer is used to knock the end of the locking piece, or a hydraulic push rod is used for continuous pressure. Since the locking piece is designed with a slope (i.e. its thickness changes along the axial direction), the axial driving force will be converted into a tendency to expand radially in the notch, thereby generating a large radial compression force between the inner ring part and the outer ring part. This force not only firmly fixes the two parts, but also tightly fits the abutting groove interface, forming a sealed liquid cooling flow channel.

[0042] In other applications with low pressure requirements, in order to simplify the assembly difficulty, the inner ring part itself can also be composed of at least two arc-shaped sub-bodies. In this case, the assembly steps are as follows: first, the arc-shaped sub-bodies are respectively placed into the outer ring part from the end, then they are spliced along the circumference in the outer ring part, and are temporarily or permanently fixed through the auxiliary structures (not shown in the figure) such as buckles, pins or end flanges in the inner ring part, so as to be combined into a complete annular inner ring structure, and then the wedge block locking operation is implemented.

[0043] According to some embodiments of the present application, the manufacturing method of the metal case liquid cooling flow channel further comprises: placing a metal sealing pipe in the cavity of the liquid cooling flow channel, and introducing a cooling medium into the metal sealing pipe to achieve cooling.

[0044] As a specific embodiment, in order to further enhance the sealing reliability of the final flow channel, a ductile metal sealing pipe (such as a red copper pipe) can be pre-installed or installed afterwards in the flow channel cavity formed by the butt joint. The soft pipe material will be deformed by extrusion in the subsequent locking process, fully filling the micro cracks, thereby achieving double sealing.

[0045] According to some embodiments of the present application, the manufacturing method of the metal case liquid cooling flow channel further comprises: introducing a detection medium into the formed liquid cooling flow channel, and keeping the internal pressure unchanged after pressure rise to verify the airtightness.

[0046] As a specific embodiment, a detection medium (such as water or inert gas) is introduced into the formed liquid cooling flow channel, and a pressure pump is used to increase the internal pressure and stabilize it at the test pressure. The pressure is kept for a period of time, and a high-precision pressure sensor is used to monitor whether the pressure decreases. If the pressure remains stable, it is verified that the flow channel has good airtightness.

[0047] Finally, it should be noted that those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program for setting system parameters can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments. Among them, the storage medium of the program can be a disk, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc. The above-mentioned computer program embodiments can achieve the same or similar effects as the corresponding any method embodiments.

[0048] In addition, the method disclosed in the embodiments of the present application can also be implemented as a computer program executed by a processor, which can be stored in a computer readable storage medium. When the computer program is executed by the processor, the above-mentioned functions defined in the method disclosed in the embodiments of the present application are executed.

[0049] Furthermore, the above method steps and system units can also be implemented by means of a controller and a computer-readable storage medium for storing a computer program which causes the controller to implement the above steps or unit functions.

[0050] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein can be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments disclosure.

[0051] The above are exemplary embodiments of the present embodiments disclosure, but it should be noted that various changes and modifications can be made without departing from the scope of the present embodiments disclosure defined by the claims. The functions, steps and / or actions of the method claims in accordance with the embodiments of the disclosure described herein need not be performed in any particular order. Furthermore, although elements of the present embodiments disclosure can be described or claimed in individual form, or in conjunction with other elements, unless specifically stated otherwise, multiple elements can be substituted for a single element. Unless specifically stated otherwise, the embodiments of the present embodiments disclosure are not to be construed as requiring that the steps be performed in order.

[0052] It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0053] The above-mentioned embodiment number of the present embodiments disclosure is only for description, not representing the advantages or disadvantages of the embodiments.

[0054] Those of ordinary skill in the art can understand that all or part of the above-mentioned embodiments can be completed by hardware, or by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium, and the above-mentioned storage medium can be a read-only memory, a magnetic disk or an optical disk, etc.

[0055] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary, and is not intended to mean that the scope of the embodiments disclosed by the present application (including claims) is limited to these examples; under the idea of the embodiments of the present application, the above embodiments or technical features in different embodiments can also be combined, and there are many other changes of different aspects of the embodiments of the present application as above. In order to be brief, they are not provided in details. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A method for manufacturing a liquid cooling channel in a metal chassis, characterized in that, include: The cylindrical inner ring component and outer ring component of the metal chassis are processed, and matching grooves are machined on the corresponding contact surfaces of the two. The locking element is processed and a corresponding notch is cut into the inner ring component according to the size of the locking element; The processed inner ring component is installed into the outer ring component, so that the notch position corresponds to the groove-free area on the outer ring component. Then, the locking member is placed into the notch to press the inner ring component and the outer ring component together, so that the grooves of the two are joined to form a liquid cooling channel.

2. The method for manufacturing the liquid cooling channel of the metal chassis according to claim 1, characterized in that, The process of machining matching grooves on the corresponding contact surfaces of the two includes: A first groove is machined on the inner wall surface of the outer ring component, and a second groove is machined on the outer wall surface of the inner ring component; The first groove and the second groove have complementary cross-sectional shapes, and their depths are both less than the wall thickness of their respective walls.

3. The method for manufacturing the liquid cooling channel of the metal chassis according to claim 1, characterized in that, The processing forms the locking element, including: The locking component is manufactured from a metal blank made of the same material as the metal chassis. Specifically, the working surface of the locking member is adapted to the curvature of the inner wall surface of the inner ring component, and the axial length of the locking member is adapted to the height of the cylinder wall of the inner ring component.

4. The method for manufacturing the liquid cooling channel of the metal chassis according to claim 3, characterized in that, The step of cutting a corresponding notch on the inner ring component according to the size of the locking component includes: The maximum width and length of the notch are determined based on the width and axial length of the locking member; Based on the determined maximum width and length, a strip-shaped notch is formed by cutting along the axial direction of the inner ring component, penetrating its cylindrical wall.

5. The method for manufacturing the liquid cooling channel of the metal chassis according to claim 3, characterized in that, Inserting the locking member into the notch includes: The locking member is inserted into the notch along the axial direction of the inner ring component; A driving force is applied along the axial direction of the locking member to cause it to expand radially within the notch, thereby generating a clamping force between the inner ring member and the outer ring member.

6. The method for manufacturing a liquid cooling channel in a metal chassis according to claim 1, characterized in that, The step of inserting the processed inner ring component into the outer ring component includes: The processed inner ring component is cooled down, and then the shrunken inner ring component is installed into the outer ring component.

7. The method for manufacturing a liquid cooling channel in a metal chassis according to claim 1, characterized in that, The step of installing the processed inner ring component into the outer ring component further includes: The outer ring component is heated, and then the processed inner ring component is installed into the expanded outer ring component.

8. The method for manufacturing a liquid cooling channel in a metal chassis according to claim 1, characterized in that, Also includes: A metal sealing tube is placed inside the cavity of the liquid cooling channel, and a cooling medium is introduced into the metal sealing tube to achieve cooling.

9. The method for manufacturing a liquid cooling channel in a metal chassis according to claim 1, characterized in that, Also includes: The inner ring component and the outer ring component are provided with mutually cooperating positioning bosses and positioning grooves at their axial ends to achieve axial alignment during assembly.

10. The method for manufacturing a liquid cooling channel in a metal chassis according to claim 1, characterized in that, Also includes: A test medium is introduced into the formed liquid-cooled flow channel, and the internal pressure is kept constant after pressurization to verify its airtightness.

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