CN112629299A - Heat pipe manufacturing method and manufacturing instrument thereof - Google Patents
Heat pipe manufacturing method and manufacturing instrument thereof Download PDFInfo
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- CN112629299A CN112629299A CN202011573111.3A CN202011573111A CN112629299A CN 112629299 A CN112629299 A CN 112629299A CN 202011573111 A CN202011573111 A CN 202011573111A CN 112629299 A CN112629299 A CN 112629299A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
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Abstract
The invention relates to the technical field of heat pipe manufacturing, and discloses a heat pipe and a manufacturing instrument thereof. According to the heat pipe manufacturing method and the manufacturing instrument thereof, the high-temperature seed capillary machine is arranged and is a high-temperature thermal spraying machine, so that powder is conveniently heated and melted by the high-temperature thermal spraying machine, is atomized into superfine particles by high-speed airflow and is sprayed onto the surface of a workpiece at a high speed to form a coating, the processes of inserting a rod, filling powder, sintering, pulling the rod, shrinking a hose and welding a tail in the traditional manufacturing method are replaced, the manufacturing process is simplified, meanwhile, a high-cost sintering furnace is not required to be used, the production efficiency is greatly improved, the production cost is reduced, and the purposes of simple process and high production efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of heat pipe manufacturing, in particular to a heat pipe manufacturing method and a manufacturing instrument thereof.
Background
The heat pipe technology is a heat transfer element called a heat pipe invented by George Grover (George Grover) of national laboratory of Los alamos (Los Al amos) in 1963, fully utilizes the heat conduction principle and the rapid heat transfer property of a phase change medium, quickly transfers the heat of a heating object to the outside of a heat source through the heat pipe, and the heat conduction capability of the heat transfer element exceeds the heat conduction capability of any known metal.
At present, the heat pipe technology is widely applied to the industries of aerospace, military industry and the like, and since being introduced into the manufacturing industry of radiators, so that people change the design idea of the traditional radiator, get rid of the single radiating mode of obtaining better radiating effect by only depending on a high-air-volume motor, adopt the heat pipe technology to ensure that the radiator can obtain satisfactory effect even if the low-rotating-speed and low-air-volume motor is adopted, the noise problem which troubles air cooling heat dissipation is well solved, a new place in the heat dissipation industry is developed and is commonly found on a CPU radiator, however, in the manufacturing process of the traditional heat pipe, the heat pipe is mainly manufactured in a sintering mode, the manufacturing process is complex, is not easy to control, needs to spend a large amount of time and cost to ensure the temperature of the sintering furnace, and has low production efficiency, so the heat pipe manufacturing method and the manufacturing instrument thereof are provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a heat pipe manufacturing method and a manufacturing instrument thereof, which have the advantages of simple process, high production efficiency and the like, and solve the problems that the traditional heat pipe is manufactured mainly in a sintering mode, the manufacturing process is complex and is not easy to control, a large amount of time and cost are needed to ensure the temperature of a sintering furnace, and the production efficiency is low in the manufacturing process of the traditional heat pipe.
(II) technical scheme
In order to realize the purposes of simple process and high production efficiency, the invention provides the following technical scheme: the utility model provides an its preparation instrument of heat pipe, includes drive mechanism, first draw machine, welding tail machine, the capillary machine of high temperature kind and second draw machine, drive mechanism's left side fixedly connected with feeder hopper, drive mechanism's right side fixedly connected with goes out the hopper, first draw machine all is located drive mechanism's top with welding tail machine, the capillary machine of high temperature kind all is located drive mechanism's bottom with second draw machine.
Preferably, the first pipe reducing machine, the tail welding machine, the high-temperature seed capillary machine and the second pipe reducing machine are sequentially arranged from left to right.
Preferably, the high-temperature seed capillary machine is a high-temperature thermal spraying machine.
Another technical problem to be solved by the present invention is to provide a heat pipe manufacturing method, which includes the following steps:
1) cutting the pipe, measuring and cutting the heat pipe by using a white steel knife, a steel plate ruler, a tape measure, a caliper and an instrument lathe according to the size requirement, measuring the pipe specification, and mainly detecting that the difference of the outer diameter of each batch of pipes is less than or equal to 0.2 mm; the wall thickness difference of the pipes is less than or equal to 0.2 mm; the cut must not have burrs caused by the friction between the cutter and the cut surface; the width of the cut should not be greater than 2.5 mm; the length tolerance is +/-0.5 mm; the method mainly comprises the steps of firstly checking by an inspector and performing spot check;
2) chamfering and cleaning, namely chamfering inner holes at two ends of a heat pipe by 0.3 multiplied by 45 degrees by using a drill bit, a trolley, an air compressor, a water tank and an external pressure gauge, wherein burrs are avoided, the heat pipe is pressed by compressed air by 6-7 kilograms of force, the pipe is immersed in the water tank to observe that no bubbles are generated, however, long hairbrushes and stainless steel wire balls with various specifications are used for twice, the steel wire balls are used for brushing back when the inner wall of the pipe is too dirty, residues are blown off by using the compressed air, and the condition in the pipe is observed in the sun;
3) the heat pipe type capillary comprises a heat pipe, a transmission mechanism, a discharge hopper, a transmission mechanism, a welding tail machine and a heat pipe, wherein the heat pipe is placed on the transmission mechanism through the discharge hopper, one end of the heat pipe is contracted by the aid of the first pipe contracting machine, then the heat pipe is moved to the welding tail machine through the transmission mechanism to weld the tail of the contracted end, the heat pipe is moved to the high-temperature type capillary machine through the transmission mechanism after the welding tail is completed, powder is sprayed on the inner wall of the heat pipe in a thermal spraying mode through the high-temperature type capillary machine, the heat pipe is moved to the second pipe contracting machine through the transmission mechanism after the capillary;
4) reducing and injecting liquid, performing pre-purification treatment and corrosion inhibition treatment on the heat pipe, and then filling a specified amount of liquid into the heat pipe;
5) degassing, heating at the bottom of the heat pipe, discharging steam from a pipe opening after working liquid in the heat pipe boils, simultaneously taking out air in the pipe, sealing the pipe by using a pin after exhausting to a certain degree, and forming a certain vacuum degree in the pipe after the liquid in the pipe is cooled, wherein the process is carried out twice;
7) the welding head is used for digging out copper powder at two ends by 3-4 mm, cleaning the welding head, particularly paying attention to the fact that copper powder does not exist on the inner wall and the thread part of a pipe, checking the pipe one by one before sealing to enable elements to resist pressure of 2000V/1s without breakdown flashover and infinite insulation, dripping sealing glue, rotating magnetic blocking and pressing, then screwing a nut and a gasket, and executing electric heating elements sealed twice according to operation rules;
8) bending, bending and forming according to a drawing or a sample, wherein the appearance of the heat pipe cannot have obvious mechanical scars or local expansion, the bending part cannot have the phenomena of wrinkles, concave-convex shapes and the like, and the welding line of the pipe is ensured to face the inward R part (not easy to break) under the condition that the bending radius is less than 3 pipe diameters and the pipe is not annealed;
9) and (3) forming detection, namely determining whether surface treatment and the type of the surface treatment are carried out according to production requirements, wherein the coating layer is required to be uniform, smooth and free from foaming, peeling and local accumulation, the lead-out rod cannot be damaged (corroded) during acid washing, the surface to be subjected to surface treatment, particularly glue, oxidation spots and the like, is treated in advance, and meanwhile, starting performance detection, isothermal performance detection and heat pipe qualification detection are carried out to ensure the product quality.
Preferably, the powder is copper powder, aluminum powder, nickel powder, silver powder or ceramic powder, the tolerance of the pipe diameter after pipe contraction is +/-0.08 mm, and the straightness after pipe contraction is not more than 4mm per meter.
(III) advantageous effects
Compared with the prior art, the invention provides a heat pipe manufacturing method and a manufacturing instrument thereof, and the heat pipe manufacturing method and the manufacturing instrument have the following beneficial effects:
according to the heat pipe manufacturing method and the manufacturing instrument thereof, the high-temperature seed capillary machine is arranged and is a high-temperature thermal spraying machine, so that powder is conveniently heated and melted by the high-temperature thermal spraying machine, is atomized into superfine particles by high-speed airflow and is sprayed onto the surface of a workpiece at a high speed to form a coating, the processes of inserting a rod, filling powder, sintering, pulling the rod, shrinking a hose and welding a tail in the traditional manufacturing method are replaced, the manufacturing process is simplified, meanwhile, a high-cost sintering furnace is not required to be used, the production efficiency is greatly improved, the production cost is reduced, and the purposes of simple process and high production efficiency are achieved.
Drawings
FIG. 1 is a schematic diagram of a heat pipe manufacturing method and a manufacturing apparatus thereof according to the present invention.
In the figure: the device comprises a transmission mechanism 1, a feed hopper 2, a discharge hopper 3, a first pipe reducing machine 4, a tail welding machine 5, a high-temperature capillary machine 6 and a second pipe reducing machine 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an apparatus for manufacturing a heat pipe includes a transmission mechanism 1, a first pipe reduction machine 4, a tail welding machine 5, a high temperature seed capillary machine 6 and a second pipe reduction machine 7, a feed hopper 2 is fixedly connected to the left side of the transmission mechanism 1, a discharge hopper 3 is fixedly connected to the right side of the transmission mechanism 1, the first pipe reduction machine 4 and the tail welding machine 5 are both located at the top of the transmission mechanism 1, the high temperature seed capillary machine 6 and the second pipe reduction machine 7 are both located at the bottom of the transmission mechanism 1, the first pipe reduction machine 4, the tail welding machine 5, the high temperature seed capillary machine 6 and the second pipe reduction machine 7 are sequentially arranged from left to right, and the high temperature seed capillary machine 6 is a high temperature thermal spraying machine.
A heat pipe manufacturing method comprises the following steps:
1) cutting the pipe, measuring and cutting the heat pipe by using a white steel knife, a steel plate ruler, a tape measure, a caliper and an instrument lathe according to the size requirement, measuring the pipe specification, and mainly detecting that the difference of the outer diameter of each batch of pipes is less than or equal to 0.2 mm; the wall thickness difference of the pipes is less than or equal to 0.2 mm; the cut must not have burrs caused by the friction between the cutter and the cut surface; the width of the cut should not be greater than 2.5 mm; the length tolerance is +/-0.5 mm; the method mainly comprises the steps of firstly checking by an inspector and performing spot check;
2) chamfering and cleaning, namely chamfering inner holes at two ends of a heat pipe by 0.3 multiplied by 45 degrees by using a drill bit, a trolley, an air compressor, a water tank and an external pressure gauge, wherein burrs are avoided, the heat pipe is pressed by compressed air by 6-7 kilograms of force, the pipe is immersed in the water tank to observe that no bubbles are generated, however, long hairbrushes and stainless steel wire balls with various specifications are used for twice, the steel wire balls are used for brushing back when the inner wall of the pipe is too dirty, residues are blown off by using the compressed air, and the condition in the pipe is observed in the sun;
3) the method comprises the following steps of (1) capillary seeding of a heat pipe, placing the heat pipe on a transmission mechanism 1 through a feed hopper 2, shrinking one end of the heat pipe by using a first pipe shrinking machine 4, moving the heat pipe to a tail welding machine 5 through the transmission mechanism 1 to weld the tail of the shrunk end, moving the heat pipe to a high-temperature seed capillary 6 through the transmission mechanism 1 after the tail welding is finished, spraying powder on the inner wall of the heat pipe in a thermal spraying mode by using the high-temperature seed capillary 6, moving the heat pipe to a second pipe shrinking machine 7 by using the transmission mechanism 1 after the seed capillary is finished, shrinking the other end of the heat pipe by using the second pipe shrinking machine 7, and finally leaving the transmission mechanism 1 through a discharge hopper 3, wherein the powder is copper powder, aluminum powder, nickel powder, silver powder or ceramic powder, the tolerance of the shrunk pipe is +/-0.08 mm, and the straightness is not more than 4mm per meter after the;
4) reducing and injecting liquid, performing pre-purification treatment and corrosion inhibition treatment on the heat pipe, and then filling a specified amount of liquid into the heat pipe;
5) degassing, heating at the bottom of the heat pipe, discharging steam from a pipe opening after working liquid in the heat pipe boils, simultaneously taking out air in the pipe, sealing the pipe by using a pin after exhausting to a certain degree, and forming a certain vacuum degree in the pipe after the liquid in the pipe is cooled, wherein the process is carried out twice;
7) the welding head is used for digging out copper powder at two ends by 3-4 mm, cleaning the welding head, particularly paying attention to the fact that copper powder does not exist on the inner wall and the thread part of a pipe, checking the pipe one by one before sealing to enable elements to resist pressure of 2000V/1s without breakdown flashover and infinite insulation, dripping sealing glue, rotating magnetic blocking and pressing, then screwing a nut and a gasket, and executing electric heating elements sealed twice according to operation rules;
8) bending, bending and forming according to a drawing or a sample, wherein the appearance of the heat pipe cannot have obvious mechanical scars or local expansion, the bending part cannot have the phenomena of wrinkles, concave-convex shapes and the like, and the welding line of the pipe is ensured to face the inward R part (not easy to break) under the condition that the bending radius is less than 3 pipe diameters and the pipe is not annealed;
9) and (3) forming detection, namely determining whether surface treatment and the type of the surface treatment are carried out according to production requirements, wherein the coating layer is required to be uniform, smooth and free from foaming, peeling and local accumulation, the lead-out rod cannot be damaged (corroded) during acid washing, the surface to be subjected to surface treatment, particularly glue, oxidation spots and the like, is treated in advance, and meanwhile, starting performance detection, isothermal performance detection and heat pipe qualification detection are carried out to ensure the product quality.
In summary, the heat pipe manufacturing method and the manufacturing instrument thereof are provided with the high-temperature seed capillary machine 7, and the high-temperature seed capillary machine 7 is a high-temperature thermal spraying machine, so that the powder is heated and melted by the high-temperature thermal spraying machine, atomized into ultrafine particles by high-speed airflow, and sprayed onto the surface of a workpiece at a high speed to form a coating, thereby replacing the processes of inserting a rod, filling powder, sintering, pulling the rod, shrinking a hose and welding the tail in the traditional manufacturing method, simplifying the manufacturing process, simultaneously not using a high-cost sintering furnace, greatly improving the production efficiency, reducing the production cost, achieving the aims of simple process and high production efficiency, solving the problems that the manufacturing process of the traditional heat pipe is mainly carried out by a sintering mode, the manufacturing process is complex and is not easy to control, and simultaneously spending a great amount of time and cost to ensure the temperature of the sintering furnace, the production efficiency is low.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an its preparation instrument of heat pipe, includes drive mechanism (1), first draw machine (4), welds tail machine (5), high temperature kind of capillary (6) and second draw machine (7), its characterized in that: the left side fixedly connected with feeder hopper (2) of drive mechanism (1), the right side fixedly connected with of drive mechanism (1) goes out hopper (3), first draw machine (4) all are located the top of drive mechanism (1) with tail welding machine (5), high temperature kind of capillary (6) all are located the bottom of drive mechanism (1) with second draw machine (7).
2. A heat pipe preparation apparatus as claimed in claim 1, wherein: the first pipe reducing machine (4), the tail welding machine (5), the high-temperature capillary machine (6) and the second pipe reducing machine (7) are sequentially arranged from left to right.
3. A heat pipe preparation apparatus as claimed in claim 1, wherein: the high-temperature seed capillary machine (6) is a high-temperature thermal spraying machine.
4. A heat pipe preparation apparatus as claimed in claim 1, which provides a heat pipe manufacturing method, comprising the steps of:
1) cutting the pipe, measuring and cutting the heat pipe by using a white steel knife, a steel plate ruler, a tape measure, a caliper and an instrument lathe according to the size requirement, measuring the pipe specification, and mainly detecting that the difference of the outer diameter of each batch of pipes is less than or equal to 0.2 mm; the wall thickness difference of the pipes is less than or equal to 0.2 mm; the cut must not have burrs caused by the friction between the cutter and the cut surface; the width of the cut should not be greater than 2.5 mm; the length tolerance is +/-0.5 mm; the method mainly comprises the steps of firstly checking by an inspector and performing spot check;
2) chamfering and cleaning, namely chamfering inner holes at two ends of a heat pipe by 0.3 multiplied by 45 degrees by using a drill bit, a trolley, an air compressor, a water tank and an external pressure gauge, wherein burrs are avoided, the heat pipe is pressed by compressed air by 6-7 kilograms of force, the pipe is immersed in the water tank to observe that no bubbles are generated, however, long hairbrushes and stainless steel wire balls with various specifications are used for twice, the steel wire balls are used for brushing back when the inner wall of the pipe is too dirty, residues are blown off by using the compressed air, and the condition in the pipe is observed in the sun;
3) the method comprises the following steps of (1) capillary tube planting of a heat pipe, putting the heat pipe on a transmission mechanism (1) through a feed hopper (2), shrinking one end of the heat pipe by using a first tube shrinking machine (4), moving the heat pipe to a tail welding machine (5) through the transmission mechanism (1), welding the tail of one end of the heat pipe after shrinking, moving the heat pipe to a high-temperature capillary machine (6) through the transmission mechanism (1) after welding the tail, spraying powder on the inner wall of the heat pipe in a thermal spraying mode by using the high-temperature capillary machine (6), moving the heat pipe to a second tube shrinking machine (7) by using the transmission mechanism (1) after capillary tube planting is completed, shrinking the other end of the heat pipe by using the second tube shrinking machine (7), and finally leaving the transmission mechanism (1) through a discharge hopper (3);
4) reducing and injecting liquid, performing pre-purification treatment and corrosion inhibition treatment on the heat pipe, and then filling a specified amount of liquid into the heat pipe;
5) degassing, heating at the bottom of the heat pipe, discharging steam from a pipe opening after working liquid in the heat pipe boils, simultaneously taking out air in the pipe, sealing the pipe by using a pin after exhausting to a certain degree, and forming a certain vacuum degree in the pipe after the liquid in the pipe is cooled, wherein the process is carried out twice;
7) the welding head is used for digging out copper powder at two ends by 3-4 mm, cleaning the welding head, particularly paying attention to the fact that copper powder does not exist on the inner wall and the thread part of a pipe, checking the pipe one by one before sealing to enable elements to resist pressure of 2000V/1s without breakdown flashover and infinite insulation, dripping sealing glue, rotating magnetic blocking and pressing, then screwing a nut and a gasket, and executing electric heating elements sealed twice according to operation rules;
8) bending, bending and forming according to a drawing or a sample, wherein the appearance of the heat pipe cannot have obvious mechanical scars or local expansion, the bending part cannot have the phenomena of wrinkles, concave-convex shapes and the like, and the welding line of the pipe is ensured to face the inward R part (not easy to break) under the condition that the bending radius is less than 3 pipe diameters and the pipe is not annealed;
9) and (3) forming detection, namely determining whether surface treatment and the type of the surface treatment are carried out according to production requirements, wherein the coating layer is required to be uniform, smooth and free from foaming, peeling and local accumulation, the lead-out rod cannot be damaged (corroded) during acid washing, the surface to be subjected to surface treatment, particularly glue, oxidation spots and the like, is treated in advance, and meanwhile, starting performance detection, isothermal performance detection and heat pipe qualification detection are carried out to ensure the product quality.
5. A heat pipe fabrication method as defined in claim 4, wherein: the powder is copper powder, aluminum powder, nickel powder, silver powder or ceramic powder, the pipe diameter tolerance after pipe contraction is +/-0.08 mm, and the straightness accuracy after pipe contraction is not more than 4mm per meter.
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| CN202011573111.3A CN112629299A (en) | 2020-12-24 | 2020-12-24 | Heat pipe manufacturing method and manufacturing instrument thereof |
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| CN202011573111.3A CN112629299A (en) | 2020-12-24 | 2020-12-24 | Heat pipe manufacturing method and manufacturing instrument thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781621A (en) * | 2004-11-29 | 2006-06-07 | 李嘉豪 | Method and its device for forming heat pipe shrinking pipe |
| US20110174474A1 (en) * | 2010-01-20 | 2011-07-21 | Juei-Khai Liu | Vapor chamber and method for manufacturing the same |
| WO2016014710A1 (en) * | 2014-07-22 | 2016-01-28 | University Of Virginia Patent Foundation | Heat transfer device for high heat flux applications and related methods thereof |
| US20190204016A1 (en) * | 2017-11-29 | 2019-07-04 | Roccor, Llc | Two-Phase Thermal Management Devices, Systems, and Methods |
| CN110234212A (en) * | 2019-04-01 | 2019-09-13 | Oppo广东移动通信有限公司 | The preparation method of heat sink, radiating subassembly, electronic device and heat sink |
| CN110763058A (en) * | 2019-10-16 | 2020-02-07 | 东莞领杰金属精密制造科技有限公司 | Method for manufacturing ultrathin heat pipe |
-
2020
- 2020-12-24 CN CN202011573111.3A patent/CN112629299A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781621A (en) * | 2004-11-29 | 2006-06-07 | 李嘉豪 | Method and its device for forming heat pipe shrinking pipe |
| US20110174474A1 (en) * | 2010-01-20 | 2011-07-21 | Juei-Khai Liu | Vapor chamber and method for manufacturing the same |
| WO2016014710A1 (en) * | 2014-07-22 | 2016-01-28 | University Of Virginia Patent Foundation | Heat transfer device for high heat flux applications and related methods thereof |
| US20190204016A1 (en) * | 2017-11-29 | 2019-07-04 | Roccor, Llc | Two-Phase Thermal Management Devices, Systems, and Methods |
| CN110234212A (en) * | 2019-04-01 | 2019-09-13 | Oppo广东移动通信有限公司 | The preparation method of heat sink, radiating subassembly, electronic device and heat sink |
| CN110763058A (en) * | 2019-10-16 | 2020-02-07 | 东莞领杰金属精密制造科技有限公司 | Method for manufacturing ultrathin heat pipe |
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Application publication date: 20210409 |