Single-face dotting tubular uniform temperature plate and preparation process thereof

Abstract

The uniform-temperature plate comprises a first pipe body and a second pipe body, the first pipe body and the second pipe body are connected into a whole to form a hollow pipe, a plurality of dotting grooves are formed in the outer side face of the first pipe body, and the dotting grooves are formed by sinking the outer side face of the first pipe body towards the inner side. The bottom of the dotting groove is fixedly connected with the inner side face of the second pipe body, the two ends of the first pipe body are bent inwards in an inclined mode to form first bent parts, the two ends of the second pipe body are bent inwards to form second bent parts, and the first bent parts and the second bent parts are connected in a sealed mode. The dotting grooves are formed in the upper surface through rolling, the rolled dotting grooves are in contact connection with the inner side of the bottom of the vapor chamber, the whole pipe body is supported through the dotting grooves, the installation and use strength of the pipe body is improved, the situation that the heat dissipation effect is affected due to deformation of the pipe body is avoided, overall heat conduction is uniform, and the service life of the pipe body is prolonged. And the heat dissipation efficiency of the vapor chamber can be conveniently controlled.

Description

Technical Field

[0001] The invention relates to the technical field of temperature equalizing plate preparation, and in particular to a single-sided dotted tubular temperature equalizing plate and a preparation process thereof. Background Art

[0002] With the increasing heat flux density of electronic chips and the increase in power demand, traditional air cooling technology can no longer meet the heat dissipation needs of highly integrated electronic chips. Liquid cooling technology has gradually become the mainstream of the market. The current liquid cooling technology includes direct cooling and indirect cooling. Direct cooling is to fill the chassis with insulating liquid such as fluorinated liquid to directly contact the electronic chip for heat dissipation. This method is limited by the insulating liquid, is costly and difficult to maintain, and is rarely used in the market. Indirect cooling is to use a metal heat conducting plate or to set a liquid flow channel inside the cavity liquid cooling plate made of a heat conducting plate. The fluid conducts heat through the contact between the liquid cooling plate and the electronic chip. Since direct contact between the fluid and the electronic chip is avoided, indirect cooling is more popular in the existing liquid cooling technology. However, the process of opening a liquid flow channel in the liquid cooling plate is relatively complicated and costly, and the liquid cooling plate is easily deformed by pressure during installation and use, which seriously affects the overall heat dissipation performance. In order to solve this problem, the existing technology improves the installation strength of the liquid cooling plate by separately setting a support column in the cavity of the liquid cooling plate. However, the separate setting of the support column not only has extremely high process requirements and complex process steps, but also easily leads to a high product defect rate, increasing the preparation cost and use cost. The separately set support column cannot be completely integrated with the liquid cooling plate, and the thickness of the two is difficult to control, resulting in uneven heat conduction. Summary of the invention

[0003] The purpose of the present invention is to provide a single-sided dotted tubular temperature equalizing plate and a preparation process thereof in response to the above-mentioned problems. Dotted grooves are formed on the upper surface of the temperature equalizing plate by rolling. The rolled dotted grooves are connected to the inner side of the bottom of the temperature equalizing plate by contact, and the entire tube body is supported by the dotted grooves, thereby improving the installation and use strength of the tube body and avoiding the deformation of the tube body that affects the heat dissipation effect. The thickness of the dotted grooves is basically consistent with the thickness of the tube body, so that the overall heat conduction of the temperature equalizing plate is uniform, which facilitates the control of the heat dissipation efficiency of the temperature equalizing plate.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0005] According to one aspect of the present invention, a single-sided dotted tubular temperature equalizer is provided, comprising a first tube body and a second tube body, wherein the first tube body and the second tube body are connected as a whole to form a hollow tube;

[0006] A plurality of dotted grooves are arranged on the outer side of the first tube body, the dotted grooves are formed by the outer side of the first tube body being recessed inwardly, and the bottom of the dotted grooves is fixedly connected to the inner side of the second tube body;

[0007] Both ends of the first tube body are bent inwardly to form a first bending portion, and both ends of the second tube body are bent inwardly to form a second bending portion. The first bending portion is sealed and connected to the second bending portion.

[0008] Preferably, the extension line of the axis of the dotted groove is intersected with the axis of the first tube body, and the acute angle formed by the intersection of the extension line of the axis of the dotted groove and the axis of the first tube body is 15-45°.

[0009] Preferably, the axis of the dotted groove is axially symmetrical with the axis of the adjacent dotted groove along the longitudinal direction of the first tube body.

[0010] Preferably, it also includes a liquid wick, which is fixedly arranged on the inner wall of the first tube body and the outer wall of the dotting groove.

[0011] Preferably, heat dissipation fins are provided on the outer side wall of the first tube body, and the heat dissipation fins are fixedly connected to the first tube body.

[0012] Preferably, the heat dissipation fins include a first zigzag fin group and a second zigzag fin group, and the first zigzag fin group and the second zigzag fin group are alternately arranged along the transverse direction of the first tube body;

[0013] The first zigzag fin group includes a plurality of first zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of first zigzag fins are sequentially connected as a whole;

[0014] The second zigzag fin group includes a plurality of second zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of second zigzag fins are sequentially connected as a whole;

[0015] The crest width of the first zigzag fin is staggered with the crest width of the second zigzag fin.

[0016] Preferably, the heat dissipating fins include a third zigzag fin group, the third zigzag fin group includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the first tube body, the plurality of third zigzag fins are connected in sequence as a whole, and the crests of the third zigzag fins are arranged in a wavy shape along the transverse direction of the first tube body.

[0017] Preferably, the heat dissipating fins include a fourth zigzag fin group, the fourth zigzag fin group includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the first tube body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the first tube body.

[0018] Preferably, the method comprises the following steps:

[0019] S1, selecting a flat substrate, dividing the flat substrate into a dotted area, a bending area and a flat area in the transverse direction, and performing rolling and dotting in the dotted area along the longitudinal direction of the flat substrate, so that a dotted groove is formed on the dotted area by being sunken inward from the surface of the flat substrate;

[0020] S2, rolling out curved connecting parts on both sides of the flat substrate after rolling and dotting, the connecting parts are bent in the direction of the dotting groove, and then rolling is performed on the middle of the bending area to make the connecting parts on both sides of the flat substrate close to each other to form a U-shaped material, and the rolling is continued until the connecting parts on both sides are in contact, and the connecting parts on both sides are welded to form an O-shaped tube body;

[0021] S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the dotted groove contacts the inner side of the plane area, and the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body sections, cleaning the tube body sections, and checking for leaks;

[0022] S4. Weld the contact between the dotted groove and the plane area in the pipe body section, then punch one end of the pipe body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed pipe body section. Liquid is passed through the open end of the semi-sealed pipe body section for water test. After the water test, vacuum the semi-sealed pipe body section from the open end and inject coolant;

[0023] S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

[0024] Preferably, in step S5, the following steps are also included:

[0025] Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate;

[0026] Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] The upper surface of the temperature equalizing plate of the present invention is provided with dotted grooves by rolling. The rolled dotted grooves are contacted and connected with the inner side of the bottom of the temperature equalizing plate, and the dotted grooves are used to support the entire tube body, thereby improving the installation and use strength of the tube body and avoiding the heat dissipation effect caused by deformation of the tube body. The thickness of the dotted grooves is basically consistent with the thickness of the tube body, so that the overall heat conduction of the temperature equalizing plate is uniform, which facilitates the control of the heat dissipation efficiency of the temperature equalizing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 is a cross-sectional view of the internal structure of the present invention;

[0031] Figure 3 It is a schematic structural diagram of the rolling equipment of the present invention;

[0032] Figure 4 is a schematic diagram of the heat dissipation fin structure of embodiment 1 of the present invention;

[0033] Figure 5-8 It is the simulation cloud diagram of the comparison 1-3 and the embodiment 1 in the comparative experiment of the present invention;

[0034] Fig. 9 is a schematic diagram of the heat dissipation fin structure of embodiment 2 of the present invention;

[0035] Fig.10 is a schematic diagram of the heat dissipation fin structure of embodiment 3 of the present invention;

[0036] Figure 11-14 It is a simulation cloud diagram of controls 1-3 and embodiment 1 in the comparative experiment of the present invention.

[0037] In the accompanying drawings, 1, first tube body; 2, second tube body; 3, dotted groove; 4, first bending portion; 5, second bending portion; 6, first zigzag fin; 7, second zigzag fin; 8, third zigzag fin; 9, fourth zigzag fin. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the invention, and these aspects of the present invention can be realized even without these specific details.

[0039] See also Figures 1 to 14 The present invention provides a single-sided dotted tubular temperature-averaging plate and a preparation process thereof, and the technical solution is as follows:

[0040] like Figure 1-2As shown, a single-sided dotted tubular heat spreader and its preparation process, comprising a first tube body and a second tube body, the first tube body and the second tube body are connected as a whole to form a hollow tube. A plurality of dotted grooves are arranged on the outer side of the first tube body, the dotted grooves are formed by the outer side of the first tube body being recessed inwardly, and the bottom of the dotted grooves is fixedly connected to the inner side of the second tube body. By setting the dotted grooves, the dotted grooves play a supporting role, which is equivalent to increasing the installation strength of the upper tube body and the lower tube body, so that the tube body is not easy to deform during installation and use of the manufactured heat spreader, and the heat dissipation performance is not affected by the deformation of the tube body. The dotted grooves can be formed by rolling the first tube body, so that the thickness of the dotted grooves is basically the same as that of the first tube body and the second tube body, so that the heat conduction of the manufactured heat spreader is more uniform and stable, which is convenient for controlling the heat conduction rate, and the heat dissipation effect is guaranteed while ensuring the strength. Among them, the extended line of the axis of the dotted groove is arranged to intersect with the axis of the first tube body, and the acute angle formed by the extended line of the axis of the dotted groove and the axis of the first tube body after intersecting is 15-45°. The axis of the dotted groove is symmetrically arranged with the axis of the adjacent dotted groove along the longitudinal direction of the first tube body. The dotted groove is arranged in a long strip shape, and a certain angle is formed between the axis of the dotted groove and the axis of the first tube body, and the axis of the dotted groove is symmetrically arranged with the axis of the adjacent dotted groove along the longitudinal direction of the first tube body, so that the layout of the dotted groove on the first tube body is more uniform, and more uniform support is provided for the first tube body and the second tube body, so that the overall strength of the manufactured heat absorbing board is uniform, and deformation due to insufficient strength of a certain part is avoided, resulting in tilted heat conduction of the heat absorbing board, uneven heat conduction and affecting the heat dissipation effect.

[0041] It should be noted that if Figure 3As shown, the dotting groove is formed by rolling a dotting device, and the dotting device includes a first roller and a second roller, and the first roller is located above the second roller. The surface of the first roller includes a first rolling area and a first plane area, and the first rolling area and the first plane area are arranged in sequence along the transverse direction of the first roller. A rolling groove group is provided on the first rolling area, and the rolling groove group includes two rolling groove columns arranged at intervals along the transverse direction of the first roller. Each rolling groove column includes a plurality of rolling grooves arranged at intervals along the circumferential direction of the first roller, and the rolling grooves are used to cooperate with the second roller to form a dotting groove. In order to improve the uniformity of the overall strength of the tube body, the rolling groove is set in a long strip shape, and the axial direction of the rolling groove forms a certain angle with the circumferential direction, and the angle is 15-45°. In the same column, two adjacent rolling grooves are set in different axial directions, and the axes of the two adjacent rolling grooves are arranged axially symmetrically to improve the uniformity of the strength distribution of the tube body. A second roller is arranged below the first roller, and the surface of the second roller includes a second rolling area and a second plane area, and the second rolling area and the second plane area are arranged in sequence along the transverse direction of the second roller. A rolling protrusion group is provided on the second rolling area, and the rolling protrusion group includes two rolling protrusion columns arranged at intervals along the transverse direction of the second roller. Each rolling protrusion column includes a plurality of rolling protrusions arranged at intervals along the circumferential direction of the second roller, and the rolling protrusions are arranged correspondingly to the rolling grooves, and the rolling protrusions are used to cooperate with the rolling grooves to form dotting grooves. When the sheet passes between the first roller and the second roller, the sheet is squeezed by the second roller, so that the rolling protrusions on the second roller press the sheet into the rolling groove to form dotting grooves, and when the first roller and the second roller rotate, the sheet forms two dotting groove columns along the longitudinal direction. Through the cooperation of the first roller and the second roller, dotting grooves can be quickly formed on the sheet, and the rolling is formed once, so the production efficiency is high.

[0042] The two ends of the first tube body are bent obliquely inward to form a first bending portion, and the two ends of the second tube body are bent inward to form a second bending portion, and the first bending portion is sealed and connected to the second bending portion. The first bending portion and the second bending portion can be pressed simultaneously on the upper and lower sides of one end by a stamping device, so that the upper and lower sides of the end are tightly attached, and then the upper and lower sides are welded at the tightly attached positions, and the other end is stamped and welded in the same way, so that the two ends are sealed to form a temperature equalizing plate.

[0043] Furthermore, a liquid absorbent core is provided on the inner wall of the first tube body and the outer wall of the dotting groove. The liquid absorbent core is based on the capillary effect and the principle of liquid dynamics. When the liquid contacts the surface of the liquid absorbent core, due to the micropore structure inside the liquid absorbent core, the liquid is quickly absorbed and diffused along the fiber network, forming a "wicking" phenomenon. This effect enables the liquid to flow back to the evaporation end under the action of gravity, thereby facilitating the transfer and circulation of heat. The liquid absorbent core includes a metal mesh type or a metal sintering type. The metal mesh type is to attach a metal wire mesh of a certain mesh number to the inner wall of the first tube body and the outer wall of the dotting groove. The metal sintering type includes powder sintering and fiber sintering. By providing a liquid absorbent core, the heat transfer rate and the circulation of the coolant are increased, and the heat dissipation efficiency is further improved.

[0044] like Figure 4 As shown, a heat dissipation fin is arranged on the outer wall of the first tube body, and the heat dissipation fin is fixedly connected to the first tube body. The heat dissipation fin includes a first zigzag fin group and a second zigzag fin group, and the first zigzag fin group and the second zigzag fin group are alternately arranged along the transverse direction of the first tube body. The first zigzag fin group includes a plurality of first zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of first zigzag fins are sequentially connected as one body. The second zigzag fin group includes a plurality of second zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of second zigzag fins are sequentially connected as one body. The crest width of the first zigzag fin is staggered with the crest width of the second zigzag fin. The heat dissipation fin is in contact with the first tube body, and the heat of the first tube body can be transferred to dissipate the heat, thereby improving the heat dissipation effect. The crest width of the first zigzag fin of the heat dissipating fin is offset from the crest width of the second zigzag fin, so that the first zigzag fin and the second zigzag fin form an offset gap, and air can flow through the offset gap, thereby improving the heat dissipation effect of the heat dissipating fin.

[0045] A single-sided dotted tubular temperature-averaging plate and a preparation process thereof, characterized in that it comprises the following steps:

[0046] S1, selecting a flat substrate, dividing the flat substrate into a dotted area, a bending area and a flat area in the transverse direction, and performing rolling and dotting in the dotted area along the longitudinal direction of the flat substrate, so that a dotted groove is formed on the dotted area by being sunken inward from the surface of the flat substrate;

[0047] S2, rolling out curved connecting parts on both sides of the flat substrate after rolling and dotting, the connecting parts are bent in the direction of the dotting groove, and then rolling the middle of the bending area to make the connecting parts on both sides of the flat substrate close to each other to form a U-shaped material, and continue rolling until the connecting parts on both sides are in contact, and then weld the connecting parts on both sides to form an O-shaped tube body;

[0048] S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the dotted groove contacts the inner side of the plane area, and the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body sections, cleaning the tube body sections, and checking for leaks;

[0049] S4. Weld the contact between the dotted groove and the plane area in the pipe body section, then punch one end of the pipe body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed pipe body section. Liquid is passed through the open end of the semi-sealed pipe body section for water test. After the water test, vacuum the semi-sealed pipe body section from the open end and inject coolant;

[0050] S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

[0051] By adopting the above-mentioned preparation process, the process is simple, the preparation efficiency is improved, and the process cost is reduced. Through this process, a temperature homogenizing board with better heat dissipation performance can be prepared.

[0052] The present invention carries out comparative experiment:

[0053] Under the same outer dimensions (120mm×26mm T=2mm), compared with aluminum plate, O-tube without internal support and harmonica tube with internal columnar support, using the same heat source, heat source conditions: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, the following Table 1 is obtained:

[0054] Table 1

[0055]

[0056] In Table 1, Control Example 1 is an aluminum plate, Control Example 2 is an O-type tube, Control Example 3 is a harmonica tube, and Example 1 is a temperature averaging board of the present invention. As can be seen from Table 1, the temperature averaging board of the present application has a significant drop in heat source temperature compared to Control Examples 1-3, a significant heat dissipation effect, a smaller weight, and better heat dissipation performance. Figure 5-8 shown.

[0057] Example 2

[0058] like Fig. 9 As shown, the present invention provides a single-sided dotted tubular temperature equalizing plate and its preparation process. Different from Example 1, in this embodiment, the heat dissipation fins include a third zigzag fin group, the third zigzag fin group includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the first tube body, the plurality of third zigzag fins are sequentially connected as a whole, and the crests of the third zigzag fins are arranged in a wavy shape along the transverse direction of the first tube body. The wavy heat dissipation fins increase the space for air circulation, so that the air can take away more heat from the heat dissipation fins, thereby improving the heat dissipation effect.

[0059] Example 3

[0060] like Fig.10 As shown, the present invention provides a single-sided dotted tubular temperature equalizing plate and its preparation process. Different from Example 1, in this embodiment, the heat dissipation fins include a fourth folded line fin group, the fourth folded line fin group includes a plurality of fourth folded line fins arranged in sequence along the transverse direction of the first tube body, the plurality of fourth folded line fins are sequentially connected as a whole, and the crests of the fourth folded line fins are arranged in a straight line along the longitudinal direction of the first tube body. The straight-line heat dissipation fins improve the heat dissipation efficiency, are simple to manufacture, are easy to produce, and improve production efficiency.

[0061] This embodiment has made comparative experiment:

[0062] Under the same outer dimensions (120mm×26mm T=2mm), compared with the combination of aluminum plate and heat sink fin, the combination of O-tube and heat sink fin without internal support, and the combination of harmonica tube and heat sink fin with internal columnar support, the same heat source is used, the heat source conditions are: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, and the following Table 2 is obtained:

[0063] Table 2

[0064]

[0065] In Table 2, Control Example 1 is a combination of aluminum plate and heat sink fins, Control Example 2 is a combination of O-tube and heat sink fins, Control Example 3 is a combination of harmonica tube and heat sink fins, and Example 1 is a combination of the temperature averaging plate and heat sink fins of the present invention. It can be seen from Table 2 that the combination of the temperature averaging plate and heat sink fins of the present application has a significant drop in heat source temperature and a significant heat dissipation effect compared to Controls 1-3, and is lighter and has better heat dissipation performance. The simulation cloud diagram is shown in FIG. Figure 11-14 shown.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tubular temperature plate with dots on one side, characterized in that: It comprises a first tube body and a second tube body, wherein the first tube body and the second tube body are connected as a whole to form a hollow tube; A plurality of dotted grooves are arranged on the outer side of the first tube body, the dotted grooves are formed by the outer side of the first tube body being recessed inwardly, and the bottom of the dotted grooves is fixedly connected to the inner side of the second tube body; The two end portions of the first tube body are bent inwardly to form a first bending portion, and the two end portions of the second tube body are bent inwardly to form a second bending portion. The first bending portion is sealed and connected to the second bending portion.

2. The single-sided dotted tubular temperature equalizing plate according to claim 1, characterized in that: The extended line of the axis of the dotted groove is arranged to intersect with the axis of the first tube body, and the acute angle formed by the extended line of the axis of the dotted groove and the axis of the first tube body after intersecting is 15-45°.

3. The single-sided dotted tubular temperature plate according to claim 2, characterized in that: The axis of the dotted groove is arranged in axisymmetry with the axis of the adjacent dotted groove along the longitudinal direction of the first tube body.

4. The single-sided dotted tubular temperature equalizing plate according to claim 1, characterized in that: It also includes a liquid wick, which is fixedly arranged on the inner wall of the first tube body and the outer wall of the dotting groove.

5. The single-sided dotted tubular temperature plate according to claim 1, characterized in that: The outer side wall of the first tube body is provided with heat dissipation fins, and the heat dissipation fins are fixedly connected to the first tube body.

6. The single-sided dotted tubular temperature equalizing plate according to claim 5, characterized in that: The heat dissipation fins include a first zigzag fin group and a second zigzag fin group, and the first zigzag fin group and the second zigzag fin group are alternately arranged along the transverse direction of the first tube body; The first zigzag fin group includes a plurality of first zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of first zigzag fins are sequentially connected as a whole; The second zigzag fin group includes a plurality of second zigzag fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of second zigzag fins are sequentially connected as a whole; The crest width of the first zigzag fin is staggered with the crest width of the second zigzag fin.

7. The single-sided dotted tubular temperature equalizing plate according to claim 5, characterized in that: The heat dissipation fins include a third zigzag fin group, which includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the first tube body, the plurality of third zigzag fins are connected in sequence, and the crests of the third zigzag fins are arranged in a wave shape along the transverse direction of the first tube body.

8. The single-sided dotted tubular temperature equalizing plate according to claim 5, characterized in that: The heat dissipation fins include a fourth zigzag fin group, which includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the first tube body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the first tube body.

9. The process for preparing a single-sided dotted tubular temperature-averaging plate according to claim 1, characterized in that: The following steps are involved: S1, selecting a flat substrate, dividing the flat substrate into a dotted area, a bending area and a flat area in the transverse direction, and performing rolling and dotting in the dotted area along the longitudinal direction of the flat substrate, so that a dotted groove is formed on the dotted area by being sunken inward from the surface of the flat substrate; S2, rolling out curved connecting parts on both sides of the flat substrate after rolling and dotting, the connecting parts are bent in the direction of the dotting groove, and then rolling is performed on the middle of the bending area to make the connecting parts on both sides of the flat substrate close to each other to form a U-shaped material, and the rolling is continued until the connecting parts on both sides are in contact, and the connecting parts on both sides are welded to form an O-shaped tube body; S3, rolling the two opposite sides of the O-shaped tube body until the bottom of the dotted groove contacts the inner side of the plane area, and the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body sections, cleaning the tube body sections, and checking for leaks; S4. Weld the contact between the dotted groove and the plane area in the pipe body section, then punch one end of the pipe body section so that the upper and lower sides of the end are in close contact, and weld the contact part to form a semi-sealed pipe body section. Liquid is passed through the open end of the semi-sealed pipe body section for water test. After the water test, vacuum the semi-sealed pipe body section from the open end and inject coolant; S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

10. The process for preparing a single-sided dotted tubular temperature-averaging plate according to claim 9, characterized in that: In the step S5, the following steps are also included: Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate; Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

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