Manufacturing and processing technology for copper-aluminum composite water-cooling box

Abstract

The invention relates to the technical field of water cooling box machining processes, in particular to a copper-aluminum composite water cooling box manufacturing and machining process. The water-cooling box comprises a water-cooling box shell and a water-cooling box cover plate, the water-cooling box shell is provided with a profiling groove for installing the water-cooling box cover plate, a plurality of PINFIN columns which are evenly arranged are arranged in the profiling groove, the bottom face of the water-cooling box cover plate is provided with grooves matched with the PINFIN columns to be embedded, and the PINFIN columns are embedded in the grooves. The grooves and the PINFINs are arranged in a one-to-one correspondence mode and are installed in an interference fit mode. The water cooling box has the beneficial effects that according to the technical scheme, the PINFIN and the upper cover are installed in an interference fit mode, and the periphery is machined in a friction stir welding mode, so that the sealing performance of the whole water cooling box is ensured, compared with the prior art, the top PINFIN is installed without a brazing process, and the cost is reduced. The problems are solved directly in an interference fit mode, the structure is simple, and the performance of materials cannot be affected.

Description

Technical Field

[0001] The invention relates to the technical field of water cooling box processing technology, and in particular to a copper-aluminum composite water cooling box manufacturing process. Background Art

[0002] There are two welding processes: FSW and brazing. However, this method has the following problems for water-cooled boxes made of copper-aluminum composite materials that need to achieve tight bonding between the pinfin and the upper cover:

[0003] The brazing process can achieve the purpose of tightly bonding the pinfin and the upper cover plate, but the use of the brazing process has the following defects: (1) It requires high temperature (temperature higher than 400°C), which is a fatal problem for copper-aluminum composite materials because high temperature will make the copper-aluminum bonding middle layer thicker, thereby greatly reducing the copper-aluminum bonding strength and reliability; it requires the use of solder, and there will be solder residues that corrode the waterway.

[0004] The prior art, application number: 2017110553298, only uses friction stir welding in the cooperation process, but the water-cooling box shell and the water-cooling cover plate cannot be processed together. FSW can ensure good sealing of the water-cooling box, but cannot ensure tight bonding between the pinfin and the upper cover plate, so the sealing is insufficient.

[0005] Therefore, it is necessary to design a copper-aluminum composite water-cooling box manufacturing process to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a copper-aluminum composite water-cooling box manufacturing process to overcome the above-mentioned deficiencies in the current prior art.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A manufacturing process of a copper-aluminum composite water-cooling box, comprising a water-cooling box shell and a water-cooling box cover plate, characterized in that: the water-cooling box shell is provided with a profiling groove for installing the water-cooling box cover plate, a plurality of PINFIN columns arranged evenly are provided in the profiling groove, a groove for fitting the PINFIN column is provided on the bottom surface of the water-cooling box cover plate, the groove and the PINFIN are arranged one-to-one and are installed by interference fit;

[0009] Specifically include the following processing methods;

[0010] S1. Making a water-cooling box cover plate, using a processing device to process holes and grooves on the water-cooling box cover plate that correspond to the PINFIN columns of the water-cooling shell, and the depth of the processed holes and grooves is not less than one-fourth of the length of the PINFIN column; the diameter of the holes and grooves is smaller than the diameter of the PINFIN column;

[0011] S2. Assembly: Install the processed water-cooling box cover plate on the water-cooling box shell, and with the assistance of a clamping device, make each set of grooves correspond to a set of PINFIN columns for interference installation, and embed the surrounding areas into the contoured grooves;

[0012] S3, clamping the assembled water cooling box onto the processing table of the friction stir welding equipment, exposing the top and side welding surfaces;

[0013] S4, then insert the stirring tool with the shoulder and the needle convex into the welding part of the workpiece at a high speed; the friction shear resistance between the stirring head and the material to be welded generates friction heat, which softens the material and causes plastic deformation, and releases plastic deformation energy. When the stirring head is driven to move along the junction of the side water-cooling box cover and the water-cooling box shell, the hot plasticized material is transferred from the front to the rear of the stirring head, and under the forging action of the stirring head shoulder, the solid phase connection between the workpieces is achieved, and the welding width is 4mm and the depth is 4mm; so that the surroundings are sealed;

[0014] S5. When welding is finished: the stirring head rotates to remove the parts and take out the product.

[0015] Preferably, the water cooling box cover plate structure is the same as the contoured groove structure.

[0016] Preferably, bosses are arranged around the contoured groove of the water-cooling housing.

[0017] Preferably, water inlets and outlets are provided at both ends of the water cooling box cover plate; and the water inlets and outlets are through grooves connected to the contoured grooves inside the water cooling box shell.

[0018] Preferably, the depth of the groove is less than one quarter of the length of the PINFEN column.

[0019] The beneficial effects of the present invention are as follows: the technical solution is installed by using an interference fit installation method between the PINFIN and the upper cover, and the surrounding areas are processed by friction stir welding, thereby ensuring the sealing of the entire water cooling box. Compared with the prior art, the top PINFIN installation does not require a brazing process, and the above problems are solved directly by an interference fit method. The structure is simple and will not affect the performance of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a copper-aluminum composite water-cooling box manufacturing process of the present invention;

[0021] Figure 2 A schematic diagram of a water-cooling box cover plate of a copper-aluminum composite water-cooling box manufacturing process of the present invention;

[0022] Figure 3 A schematic diagram of a water-cooling box shell of a copper-aluminum composite water-cooling box manufacturing process of the present invention;

[0023] Figure 4 This is an enlarged view of the interference fit of a copper-aluminum composite water-cooling box manufacturing process of the present invention;

[0024] In the figure: 1, water cooling box shell; 2, water cooling box cover; 3, PINFIN column; 21, groove; 12, contoured groove; 13, boss; 14, water inlet and outlet. DETAILED DESCRIPTION

[0025] Reference Figures 1 to 4 , a copper-aluminum composite water-cooling box manufacturing process, which includes a water-cooling box shell 1 and a water-cooling box cover plate 2;

[0026] The water cooling box housing 1 is provided with a profiled groove 12 for installing the water cooling box cover plate, and a plurality of PINFIN columns 3 are evenly arranged in the profiled groove;

[0027] The structure of the water cooling box cover plate 2 is the same as the structure of the contoured groove, and a groove 21 for fitting the PINFIN column is provided on the bottom surface of the water cooling box cover plate;

[0028] In order to facilitate the installation of the water cooling cover plate, bosses 13 are also arranged around the contoured groove of the water cooling shell to prevent the internal cavity PINFIN column from flowing normally and not being affected by the installation of the water cooling box cover plate, while playing a sealing role.

[0029] In order to facilitate connection, water inlet and outlet 14 are also provided at both ends of the water cooling box cover plate; and the water inlet and outlet are through grooves connected to the contoured grooves inside the water cooling box shell;

[0030] In order to ensure that the groove can cooperate with the PINFIN column for position fixing, the groove and the PINFIN are installed by interference fit;

[0031] In order not to affect the later welding fixation, the depth of the groove is less than one quarter of the length of the PINFEN column;

[0032] Specifically include the following processing methods;

[0033] S1. Making a water-cooling box cover plate, using a processing device to process holes and grooves on the water-cooling box cover plate that correspond to the PINFIN columns of the water-cooling shell, and the depth of the processed holes and grooves is not less than one-fourth of the length of the PINFIN column; the diameter of the holes and grooves is smaller than the diameter of the PINFIN column;

[0034] S2. Assembly: Install the processed water-cooling box cover plate on the water-cooling box shell, and with the assistance of a clamping device, make each set of grooves correspond to a set of PINFIN columns for interference installation, and embed the surrounding areas into the contoured grooves;

[0035] S3, clamping the assembled water cooling box onto the processing table of the friction stir welding equipment, exposing the top and side welding surfaces;

[0036] S4, then insert the stirring tool with the shoulder and the needle convex into the welding part of the workpiece at a high speed; the friction shear resistance between the stirring head and the material to be welded generates friction heat, which softens the material and causes plastic deformation, and releases plastic deformation energy. When the stirring head is driven to move along the junction of the side water-cooling box cover and the water-cooling box shell, the hot plasticized material is transferred from the front to the rear of the stirring head, and under the forging action of the stirring head shoulder, the solid phase connection between the workpieces is achieved, and the welding width is 4mm and the depth is 4mm; so that the surroundings are sealed;

[0037] S5. When welding is finished: the stirring head rotates to remove the parts and take out the product;

[0038] Through the above-mentioned processing technology, first, the PINFIN column and the groove are installed by interference fit, and the sealing degree between the PINFIN column and the groove is ensured by assembly in the above manner. Then, the side gap between the water-cooling box cover and the water-cooling box shell is welded together by friction stir welding, thereby ensuring the sealing all around, thereby ensuring the sealing degree of the entire water-cooling box.

[0039] The benefits of the present invention are that the technical solution is installed by using an interference fit between the PINFIN and the upper cover, and the surrounding areas are processed by friction stir welding, thereby ensuring the sealing of the entire water cooling box. Compared with the prior art, the top PINFIN installation does not require a brazing process, and the above problems are solved directly by interference fit. The structure is simple and will not affect the performance of the material.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A copper-aluminum composite water-cooling box manufacturing process, which includes a water-cooling box shell and a water-cooling box cover plate, characterized in that: The water cooling box shell is provided with a contoured groove for installing the water cooling box cover plate, a plurality of evenly arranged PINFIN columns are provided in the contoured groove, and a groove for fitting the PINFIN columns is provided on the bottom surface of the water cooling box cover plate, the groove and the PINFIN are arranged one-to-one and are installed by interference fit; Specifically include the following processing methods; S1. Making a water-cooling box cover plate, using a processing device to process holes and grooves on the water-cooling box cover plate that correspond to the PINFIN columns of the water-cooling shell, and the depth of the processed holes and grooves is not less than one-fourth of the length of the PINFIN column; the diameter of the holes and grooves is smaller than the diameter of the PINFIN column; S2. Assembly: Install the processed water-cooling box cover plate on the water-cooling box shell, and with the assistance of a clamping device, make each set of grooves correspond to a set of PINFIN columns for interference installation, and embed the surrounding areas into the contoured grooves; S3, clamping the assembled water cooling box onto the processing table of the friction stir welding equipment, exposing the top and side welding surfaces; S4, then insert the stirring tool with the shoulder and the needle convex into the welding part of the workpiece at a high speed; the friction shear resistance between the stirring head and the material to be welded generates friction heat, which softens the material and causes plastic deformation, and releases plastic deformation energy. When the stirring head is driven to move along the junction of the side water-cooling box cover and the water-cooling box shell, the hot plasticized material is transferred from the front to the rear of the stirring head, and under the forging action of the stirring head shoulder, the solid phase connection between the workpieces is achieved, and the welding width is 4mm and the depth is 4mm; so that the surroundings are sealed; S5. When welding is finished: the stirring head rotates to remove the parts and take out the product.

2. The manufacturing process of a copper-aluminum composite water-cooling box according to claim 1 is characterized in that: The water cooling box cover plate structure is the same as the contoured groove structure.

3. The manufacturing process of a copper-aluminum composite water-cooling box according to claim 1, characterized in that: Bosses are also arranged around the contoured groove of the water-cooling housing.

4. The manufacturing process of a copper-aluminum composite water-cooling box according to claim 1, characterized in that: Water inlets and outlets are also provided at both ends of the water cooling box cover plate; and the water inlets and outlets are through grooves connected to the contoured grooves inside the water cooling box shell.

5. The manufacturing process of a copper-aluminum composite water-cooling box according to claim 1, characterized in that: The depth of the groove is less than one quarter of the length of the PINFEN column.

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