Method and device for preparing graphene-copper composite material through continuous feeding and continuous casting

Abstract

The invention relates to the technical field of continuous casting of graphene copper, in particular to a method and device for preparing a graphene copper composite material through continuous feeding and continuous casting, and the device comprises a main body component which comprises an electric control cabinet, a connecting wire arranged on the electric control cabinet and a supporting assembly arranged on the right side of the electric control cabinet; the continuous casting part comprises a main crucible assembly arranged in a supporting assembly, an auxiliary crucible assembly arranged in the supporting assembly, a partition plate assembly arranged in the main crucible assembly and a heating assembly arranged in the supporting assembly. The connecting part comprises a feeding assembly arranged on the supporting assembly and a water cooling assembly arranged in the supporting assembly; the problem that graphene floats in the continuous casting process can be solved to a certain extent, continuous feeding can be conducted to ensure that the continuous casting process is not interrupted, it can be ensured that the added graphene copper block raw materials are rapidly molten through preheating, and the continuous casting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting graphene copper, in particular to a method and a device for preparing a graphene copper composite material by continuous feeding and continuous casting. Background Art

[0002] Continuous casting technology was perfected in the 1980s and has been widely used. Vacuum continuous casting technology is an improved technology of ordinary continuous casting technology. As the name suggests, it is difficult to avoid oxidation of molten metal when it comes into contact with air during the smelting process of ordinary continuous casting technology. The resulting oxide inclusions will seriously damage the quality of the casting, while vacuum continuous casting technology can solve this problem. At the same time, vacuum melting can reduce the pores in the casting and thus improve the density of the continuous casting billet. Combined with directional solidification technology, it can also achieve purification and impurity removal effects, thereby improving the mechanical properties of the casting.

[0003] Melt casting is one of the most promising technologies for developing graphene copper composites and realizing large-scale production of high-performance copper-based composites. The preparation of graphene copper composites by melt casting needs to overcome the non-wettability of graphene and copper melt, and also avoid the floating problem of graphene caused by density difference during smelting. Existing technologies use bulk materials obtained by hot pressing or sintering graphene copper composite powder as raw materials for smelting, which can effectively avoid the above problems. However, the current vacuum horizontal continuous casting has the problem of starting and stopping equipment for each smelting, and interrupting the vacuum state to add materials causes the continuous casting process to be discontinuous, reducing efficiency. At present, there are equipment for vacuum continuous feeding of vacuum continuous casting furnaces, but it is not suitable for the preparation of graphene copper composites. Summary of the invention

[0004] In view of the problem that the vacuum horizontal continuous casting in the above-mentioned prior art requires starting and stopping the equipment for each smelting, interrupting the vacuum state for feeding causes the continuous casting process to be discontinuous and the efficiency to be reduced, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a method and device for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including, main body parts, including an electric control cabinet, connecting wires arranged on the electric control cabinet, and a support assembly arranged on the right side of the electric control cabinet; continuous casting parts, including a main crucible assembly arranged in the support assembly, a secondary crucible assembly arranged in the support assembly, a partition assembly arranged in the main crucible assembly, and a heating assembly arranged in the support assembly; connecting parts, including a feeding assembly arranged on the support assembly, a water cooling assembly arranged in the support assembly, a connecting assembly arranged on the main crucible assembly, and a vacuum assembly arranged on the side wall of the support assembly.

[0007] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the support assembly includes a bracket arranged on the right side of the electric control cabinet, a furnace shell is fixedly installed on the upper side of the bracket, and an observation mirror is provided on the upper side of the furnace shell.

[0008] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the main crucible assembly includes a main heating crucible arranged in the furnace shell, and a flow channel is provided on the side wall of the main heating crucible.

[0009] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the auxiliary crucible assembly includes an auxiliary heating crucible arranged in a furnace shell, the auxiliary heating crucible is provided with a placement groove, and a rocker is fixedly connected to the side wall of the auxiliary heating crucible; wherein the rocker passes through the furnace shell and is rotatably connected to the furnace shell.

[0010] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the baffle assembly includes a graphite baffle arranged on the inner wall of the main heating crucible, and the side wall of the graphite baffle is provided with mesh holes.

[0011] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the heating assembly includes a main heating coil arranged in a furnace shell, and an auxiliary heating coil is arranged in the furnace shell.

[0012] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the feeding component includes a fixed groove arranged on the furnace shell, the inner side wall of the fixed groove is fixedly connected to the feeding cavity, and the inner side wall of the feeding cavity is placed with a graphene copper block.

[0013] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the water cooling component includes a primary water cooling arranged in the furnace shell, a crystallizer is arranged in the furnace shell, and a secondary water cooling is arranged on the lower side of the bracket.

[0014] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the connection assembly includes a plug rod arranged in the flow channel, and a traction device is arranged on the lower side of the bracket.

[0015] As a preferred embodiment of the method and device for preparing graphene copper composite materials by continuous feeding and continuous casting of the present invention, the vacuum component includes a first vacuum valve arranged on the side wall of the furnace shell, and a second vacuum valve is arranged on the side wall of the feeding chamber.

[0016] The method and device for preparing a graphene copper composite material by continuous feeding and continuous casting of the present invention have the following beneficial effects: by arranging a main body component, a continuous casting component and a connecting component, the problem of graphene floating during the continuous casting process can be solved to a certain extent, and the prepared copper rod has high conductivity and good mechanical properties. The material can be continuously fed to ensure that the continuous casting process is not interrupted, and the added graphene copper block raw material can be quickly melted after preheating, which solves the problem that the equipment needs to be started and stopped for each smelting in vacuum horizontal continuous casting, and the interruption of the vacuum state for feeding causes the continuous casting process to be discontinuous and the efficiency is reduced, thereby achieving the effect of improving the continuous casting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 An overall schematic diagram of a method and apparatus for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0019] Figure 2 An overall schematic diagram of a method and apparatus for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0020] Figure 3 An overall schematic diagram of a secondary crucible assembly for a method and apparatus for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0021] Figure 4 An overall schematic diagram of the connecting parts of a method and apparatus for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0022] Figure 5 An overall schematic diagram of the connection components of a method and apparatus for preparing a graphene copper composite material by continuous feeding and continuous casting.

[0023] In the figure: 100, main body; 101, electric control cabinet; 102, connecting wire; 103, support assembly; 103a, bracket; 103b, furnace shell; 103c, observation mirror; 200, continuous casting part; 201, main crucible assembly; 201a, main heating crucible; 201b, flow channel; 202, auxiliary crucible assembly; 202a, auxiliary heating crucible; 202b, placement groove; 202c, rocker; 203, partition assembly; 203a, graphite partition; 203b, mesh; 204, Heating assembly; 204a, main heating coil; 204b, auxiliary heating coil; 300, connecting component; 301, feeding assembly; 301a, fixing groove; 301b, feeding chamber; 301c, graphene copper block; 302, water cooling assembly; 302a, primary water cooling; 302b, crystallizer; 302c, secondary water cooling; 303, connecting assembly; 303a, plug rod; 303b, traction device; 304, vacuum assembly; 304a, first vacuum valve; 304b, second vacuum valve; DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example 1

[0028] Reference Figure 1 to Figure 5, which is the first embodiment of the present invention, and provides a method and device for preparing graphene copper composite materials by continuous feeding and continuous casting, which includes a main part 100, including an electric control cabinet 101, a connecting line 102 arranged on the electric control cabinet 101, and a support assembly 103 arranged on the right side of the electric control cabinet 101; a continuous casting part 200, including a main crucible assembly 201 arranged in the support assembly 103, a secondary crucible assembly 202 arranged in the support assembly 103, a partition assembly 203 arranged in the main crucible assembly 201, and a heating assembly 204 arranged in the support assembly 103; a connecting part 300, including a feeding assembly 301 arranged on the support assembly 103, a water cooling assembly 302 arranged in the support assembly 103, a connecting assembly 303 arranged on the main crucible assembly 201, and a vacuum assembly 304 arranged on the side wall of the support assembly 103.

[0029] Furthermore, the support assembly 103 includes a bracket 103a arranged on the right side of the electric control cabinet 101, a furnace shell 103b is fixedly installed on the upper side of the bracket 103a, and an observation mirror 103c is provided on the upper side of the furnace shell 103b; the main crucible assembly 201 includes a main heating crucible 201a arranged in the furnace shell 103b, and a flow channel 201b is provided on the side wall of the main heating crucible 201a; the auxiliary crucible assembly 202 includes an auxiliary heating crucible 202a arranged in the furnace shell 103b, a placement groove 202b is provided on the auxiliary heating crucible 202a, and a rocker 202c is fixedly connected to the side wall of the auxiliary heating crucible 202a; wherein the rocker 202c passes through the furnace shell 103b and is rotatably connected to the furnace shell 103b.

[0030] Among them, the bracket 103a is located on the right side of the electric control cabinet 101, and the observation mirror 103c is used to observe the internal situation of the furnace shell 103b. There is a furnace cover on the upper side of the furnace shell 103b, which is not shown in the figure. This is a conventional technology and will not be described in detail here. The connecting line 102 is connected to the furnace shell 103b, so that the main heating coil 204a, the auxiliary heating coil 204b, the vacuum pump, the first vacuum valve 304a and the second vacuum valve 304b are controlled by the electric control cabinet 101. The vacuum pump is placed at the rear of the furnace body and connected to the vacuum chamber through a vacuum bellows, which is responsible for the vacuum in the furnace chamber. An infrared thermometer is provided on the outside of the furnace shell 103b to measure the temperature inside the furnace shell 103b. This is a prior art and will not be described in detail here. There is copper liquid 201c (liquid after the graphene copper is melted) in the main heating crucible 201a.

[0031] Preferably, the partition assembly 203 includes a graphite partition 203a arranged on the inner wall of the main heating crucible 201a, and the side wall of the graphite partition 203a is provided with a mesh 203b; the heating assembly 204 includes a main heating coil 204a arranged in the furnace shell 103b, and the furnace shell 103b is provided with an auxiliary heating coil 204b; the feeding assembly 301 includes a fixing groove 301a arranged on the furnace shell 103b, and the inner wall of the fixing groove 301a is fixedly connected with a feeding chamber 301b, and the inner wall of the feeding chamber 301b is placed with a graphene copper block 301c.

[0032] Among them, there are multiple mesh holes 203b, and the multiple mesh holes 203b are distributed in a circular array. The main heating coil 204a and the auxiliary heating coil 204b are both provided with thermocouples, which are used to monitor the temperature in real time to ensure that the equipment operates within an appropriate temperature range, thereby improving the stability and efficiency of the production process (this is the prior art and will not be described in detail here). The main heating coil 204a is on the outside of the main heating crucible 201a to facilitate heating the graphene copper in the main heating crucible 201a. The auxiliary heating coil 204b is on the outside of the auxiliary heating crucible 202a to facilitate preheating of the graphene copper in the auxiliary heating crucible 202a. Preheating and sintering the graphene copper avoids the problem of graphene floating to a certain extent. An opening and closing mechanism 301d is provided on the lower side of the feeding chamber 301b (this is a conventional technology in the art and will not be described in detail here) to control the amount of graphene copper block 301c in the feeding chamber 301b entering the auxiliary heating crucible 202a.

[0033] Further, the water cooling assembly 302 includes a primary water cooling 302a arranged in the furnace shell 103b, a crystallizer 302b is arranged in the furnace shell 103b, and a secondary water cooling 302c is arranged on the lower side of the bracket 103a; the connecting assembly 303 includes a plug rod 303a arranged in the flow channel 201b, and a traction device 303b is arranged on the lower side of the bracket 103a; the vacuum assembly 304 includes a first vacuum valve 304a arranged on the side wall of the furnace shell 103b, and a second vacuum valve 304b is arranged on the side wall of the feeding chamber 301b;

[0034] Among them: a thermocouple is arranged at the crystallizer 302b, the crystallizer 302b is made of graphite and is surrounded by a circulating cooling water tank (primary water cooling 302a), the vacuum pump is used in conjunction with the first vacuum valve 304a and the second vacuum valve 304b, the dead Gan is slidably connected to the flow channel 201b, and the traction device 303b can drive the plug rod 303a to move up and down in the flow channel 201b.

[0035] When in use, first open the furnace door (the furnace door is arranged on the surface of the furnace shell 103b, which is a conventional technology and will not be described here), wash the high-purity copper raw material and the cold-pressed preformed graphene copper block 301c to remove surface impurities and then put them into the main heating crucible 201a, and at the same time, use the traction device 303b to make the plug rod 303a move upward to temporarily block the flow channel 201b to prevent incomplete molten metal from flowing in, then close the furnace door to evacuate, and when the vacuum degree reaches below 1Pa, open the main heating coil 204a to heat the graphene copper block 301c in the main heating crucible 201a, and at the same time adjust the cooling water to ensure that the furnace shell 103b will not be damaged, and set the melting temperature, and adjust the temperature control mode according to the data measured by the infrared thermometer, and keep it throughout the melting process. Vacuuming is beneficial to remove impurities and gases in the molten graphene copper block 301c. After the graphene copper block 301c reaches the target temperature and remains stable, the traction device 303b is used to move the plug rod 303a downward and out of the flow channel 201b. The copper liquid (mixed melt after the graphene copper block 301c is melted) is cooled and formed through the crystallizer 302b and the primary water cooling 302a. The cooling rate of the copper rod (the graphene copper body formed by the copper liquid passing through the crystallizer 302b and the primary water cooling 302a) is adjusted by the thermocouple feedback temperature in the crystallizer 302b to keep the cooling temperature of the copper rod at the target temperature. When the temperature of the crystallizer 302b reaches the predetermined temperature, the traction rate of the traction device 303b is set according to different needs. At this time, the copper rod passes through the crystallizer 302 b has been initially solidified, but the temperature of the copper rod is still very high at this time, and it is necessary to open the secondary water cooling 302c to cool down the high-temperature metal rod (copper rod). When the copper liquid is observed to drop through the observation mirror 103c above the furnace body, the raw materials to be added are placed in the continuous feeding chamber 301b, and the warehouse door is closed after placing (set above the feeding chamber 301b, this is a conventional technology and will not be repeated here), and the vacuum is pumped to below 1Pa. The graphene copper block 301c is allowed to fall into the auxiliary heating crucible 202a through the opening and closing mechanism 301d. At this time, the auxiliary heating coil 204b is turned on, and the program is adjusted to set the insulation temperature to be about 20°C lower than the melting point of copper. This step is used to preheat the copper raw materials that need to be continuously cast and the sintered cold-pressed preformed graphene copper block 301c body, to ensure that the raw materials are placed in the main induction After the heating furnace, it can be melted quickly, and a pull-stop program is set (the pull-stop program is set on the traction device 303b. When the copper rod is pulled out, sometimes in order to avoid the surface quality of the copper rod from deteriorating, a stop time is set to wait for the copper liquid to be fully filled). When the temperature of the preheating furnace reaches the sintering temperature and stabilizes, the traction device 303b is paused, and the graphene copper block 301c raw material preheated in the preheating crucible is placed on the graphite partition 203a on the graphite crucible through a manual control rod. At this time, the secondary coil is stopped for heating, and after observing that the graphene copper block 301c raw material is completely melted and flows into the main heating crucible 201a, the traction device 303b is started for continuous casting. When it is necessary to stop the machine, wait for the copper liquid to be consumed, turn off the heating power supply and the traction device 303b, open the vacuum valve to break the vacuum, and then open the furnace cover.Clean the residue in the furnace.

[0036] In summary, through the cooperation of the main component 100, the continuous casting component 200 and the connecting component 300, the problem of graphene floating during the continuous casting process can be solved to a certain extent, which indirectly makes the prepared copper rod have high conductivity and good mechanical properties, and can continuously feed materials to ensure that the continuous casting process is not interrupted, and can ensure that the added graphene copper block 301c raw material is quickly melted after preheating, thereby improving the continuous casting efficiency, avoiding the formation of oxidation inclusions caused by the copper liquid contacting the air during the ordinary continuous casting process, and avoiding the decline in the quality of the melt.

[0037] Example 2

[0038] This is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a method for preparing a graphene copper composite material by continuous feeding and continuous casting, which comprises:

[0039] Step 1: First open the furnace door, wash the high-purity copper raw material and the cold-pressed preformed graphene copper block 301c to remove surface impurities, and then put them into the main heating crucible 201a, so that the plug rod 303a moves upward to temporarily block the flow channel 201b to prevent incomplete molten metal from flowing in, and then close the furnace door to evacuate. When the vacuum degree reaches below 1Pa, open the main heating coil 204a to heat the graphene copper block 301c in the main heating crucible 201a, and adjust the cooling water to ensure that the furnace shell 103b will not be damaged;

[0040] Step 2: Set the melting temperature to 1100°C, start the automatic temperature control mode according to the feedback temperature of the infrared thermometer, and keep the vacuum state during the whole melting process, which is conducive to removing the impurity gas in the copper melt;

[0041] Step 3: After the copper liquid reaches the target temperature and remains stable, the plug rod 303a is moved out of the flow channel 201b, and the copper liquid is cooled and formed through the crystallizer 302b and the primary water cooling 302a. The cooling rate of the copper rod is adjusted by the thermocouple feedback temperature in the crystallizer 302b. The temperature of the crystallizer 302b is controlled to 1070°C to keep the cooling temperature of the copper rod at the target temperature.

[0042] Step 4: When the temperature of the crystallizer 302b reaches the preset 1070°C, the traction device 303b is turned on. At this time, the metal melt (copper rod) below has solidified, and the traction speed of the traction device 303b is set to 5 mm / min;

[0043] Step 5: At this time, the copper rod has been initially solidified after passing through the crystallizer 302b, but the temperature of the copper rod is still very high, and it is necessary to open the secondary water cooling 302c to cool down the high-temperature metal rod (copper rod);

[0044] Step 6: When the copper liquid is observed to drop through the observation mirror 103c above the furnace shell 103b, the graphene copper pre-pressed blocks and high-purity copper raw materials to be added are placed in the continuous feeding chamber 301b, and the door is closed after placement. The vacuum is pumped to below 1Pa, and after ensuring that the vacuum value is stable, the sample is allowed to fall into the auxiliary heating crucible 202a, and then the auxiliary heating coil 204b is turned on. The program is adjusted to set the preheating sintering temperature to 1060°C to ensure that the raw materials can be quickly melted after being placed in the main heating crucible 201a;

[0045] Step 7: Set the pull-stop program. When the temperature of the preheating furnace reaches the sintering temperature and stabilizes, the traction device 303b is stopped. The preheated raw materials in the preheating crucible are placed on the graphite partition 203a on the graphite crucible through the rocker 202c. At this time, the auxiliary heating coil 204b is stopped for heating. After the raw materials are completely melted and flow into the main heating crucible 201a, the traction device 303b is started to continue the continuous casting.

[0046] Step 8: When it is necessary to shut down, wait until the copper liquid is consumed, turn off the heating power supply and the traction device 303b, open the vacuum valve to break the vacuum, open the furnace cover, and clean the residue in the furnace.

[0047] Example 3

[0048] This is the third embodiment of the present invention. The difference from the previous embodiment is that the traction rate and preheating melting temperature in step 4 and step 6 are different, which includes:

[0049] Step 1: First open the furnace door, wash the high-purity copper raw material and the cold-pressed preformed graphene copper block 301c to remove surface impurities, and then put them into the main heating crucible 201a, so that the plug rod 303a moves upward to temporarily block the flow channel 201b to prevent incomplete molten metal from flowing in, and then close the furnace door to evacuate. When the vacuum degree reaches below 1Pa, open the main heating coil 204a to heat the graphene copper block 301c in the main heating crucible 201a, and adjust the cooling water to ensure that the furnace shell 103b will not be damaged;

[0050] Step 2: Set the melting temperature to 1100°C, start the automatic temperature control mode according to the feedback temperature of the infrared thermometer, and keep the vacuum state during the whole melting process, which is conducive to removing the impurity gas in the copper melt;

[0051] Step 3: After the copper liquid reaches the target temperature and remains stable, the plug rod 303a is moved out of the flow channel 201b, and the copper liquid is cooled and formed through the crystallizer 302b and the primary water cooling 302a. The cooling rate of the copper rod is adjusted by the thermocouple feedback temperature in the crystallizer 302b. The temperature of the crystallizer 302b is controlled to 1070°C to keep the cooling temperature of the copper rod at the target temperature.

[0052] Step 4: When the temperature of the crystallizer 302b reaches the preset 1070°C, the traction device 303b is turned on. At this time, the metal melt (copper rod) below has solidified, and the traction speed of the traction device 303b is set to 4 mm / min;

[0053] Step 5: At this time, the copper rod has been initially solidified after passing through the crystallizer 302b, but the temperature of the copper rod is still very high, and it is necessary to open the secondary water cooling 302c to cool down the high-temperature metal rod (copper rod);

[0054] Step 6: When the copper liquid is observed to drop through the observation mirror 103c above the furnace shell 103b, the graphene copper pre-pressed blocks and high-purity copper raw materials to be added are placed in the continuous feeding chamber 301b, and the door is closed after placement. The vacuum is pumped to below 1Pa, and after ensuring that the vacuum value is stable, the sample is allowed to fall into the auxiliary heating crucible 202a, and then the auxiliary heating coil 204b is turned on. The program is adjusted to set the preheating sintering temperature to 1050°C to ensure that the raw materials can be quickly melted after being placed in the main heating crucible 201a;

[0055] Step 7: Set the pull-stop program. When the temperature of the preheating furnace reaches the sintering temperature and stabilizes, the traction device 303b is stopped. The preheated raw materials in the preheating crucible are placed on the graphite partition 203a on the graphite crucible through the rocker 202c. At this time, the auxiliary heating coil 204b is stopped for heating. After the raw materials are completely melted and flow into the main heating crucible 201a, the traction device 303b is started to continue the continuous casting.

[0056] Step 8: When it is necessary to shut down, wait until the copper liquid is consumed, turn off the heating power supply and the traction device 303b, open the vacuum valve to break the vacuum, open the furnace cover, and clean the residue in the furnace.

[0057] Example 4

[0058] This is the fourth embodiment of the present invention. The difference from the previous embodiment is that the traction rate and preheating melting temperature in step 4 and step 6 are different, which include:

[0059] Step 1: First open the furnace door, wash the high-purity copper raw material and the cold-pressed preformed graphene copper block 301c to remove surface impurities, and then put them into the main heating crucible 201a, so that the plug rod 303a moves upward to temporarily block the flow channel 201b to prevent incomplete molten metal from flowing in, and then close the furnace door to evacuate. When the vacuum degree reaches below 1Pa, open the main heating coil 204a to heat the graphene copper block 301c in the main heating crucible 201a, and adjust the cooling water to ensure that the furnace shell 103b will not be damaged;

[0060] Step 2: Set the melting temperature to 1100°C, start the automatic temperature control mode according to the feedback temperature of the infrared thermometer, and keep the vacuum state during the whole melting process, which is conducive to removing the impurity gas in the copper melt;

[0061] Step 3: After the copper liquid reaches the target temperature and remains stable, the plug rod 303a is moved out of the flow channel 201b, and the copper liquid is cooled and formed through the crystallizer 302b and the primary water cooling 302a. The cooling rate of the copper rod is adjusted by the thermocouple feedback temperature in the crystallizer 302b. The temperature of the crystallizer 302b is controlled to 1070°C to keep the cooling temperature of the copper rod at the target temperature.

[0062] Step 4: When the temperature of the crystallizer 302b reaches the preset 1070°C, the traction device 303b is turned on. At this time, the metal melt (copper rod) below has solidified, and the traction speed of the traction device 303b is set to 3mm / min;

[0063] Step 5: At this time, the copper rod has been initially solidified after passing through the crystallizer 302b, but the temperature of the copper rod is still very high, and it is necessary to open the secondary water cooling 302c to cool down the high-temperature metal rod (copper rod);

[0064] Step 6: When the copper liquid is observed to drop through the observation mirror 103c above the furnace shell 103b, the graphene copper pre-pressed blocks and high-purity copper raw materials to be added are placed in the continuous feeding chamber 301b, and the door is closed after placement. The vacuum is pumped to below 1Pa, and after ensuring that the vacuum value is stable, the sample is allowed to fall into the auxiliary heating crucible 202a, and then the auxiliary heating coil 204b is turned on. The program is adjusted to set the preheating sintering temperature to 1040°C to ensure that the raw materials can be quickly melted after being placed in the main heating crucible 201a;

[0065] Step 7: Set the pull-stop program. When the temperature of the preheating furnace reaches the sintering temperature and stabilizes, the traction device 303b is stopped. The preheated raw materials in the preheating crucible are placed on the graphite partition 203a on the graphite crucible through the rocker 202c. At this time, the auxiliary heating coil 204b is stopped for heating. After the raw materials are completely melted and flow into the main heating crucible 201a, the traction device 303b is started to continue the continuous casting.

[0066] Step 8: When it is necessary to shut down, wait until the copper liquid is consumed, turn off the heating power supply and the traction device 303b, open the vacuum valve to break the vacuum, open the furnace cover, and clean the residue in the furnace.

[0067] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0068] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0069] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method and device for preparing graphene copper composite materials by continuous feeding and continuous casting, characterized in that: include, A main body component (100) comprises an electric control cabinet (101), a connecting line (102) arranged on the electric control cabinet (101), and a supporting assembly (103) arranged on the right side of the electric control cabinet (101); A continuous casting component (200), comprising a main crucible assembly (201) arranged in a support assembly (103), a secondary crucible assembly (202) arranged in the support assembly (103), a partition assembly (203) arranged in the main crucible assembly (201), and a heating assembly (204) arranged in the support assembly (103); The connecting component (300) comprises a feeding component (301) arranged on the supporting component (103), a water cooling component (302) arranged in the supporting component (103), a connecting component (303) arranged on the main crucible component (201), and a vacuum component (304) arranged on the side wall of the supporting component (103).

2. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 1, characterized in that: The support assembly (103) comprises a bracket (103a) arranged on the right side of the electric control cabinet (101), a furnace shell (103b) is fixedly mounted on the upper side of the bracket (103a), and an observation mirror (103c) is arranged on the upper side of the furnace shell (103b).

3. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 2, characterized in that: The main crucible assembly (201) comprises a main heating crucible (201a) arranged in a furnace shell (103b), and a flow channel (201b) is provided on a side wall of the main heating crucible (201a).

4. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 3, characterized in that: The auxiliary crucible assembly (202) comprises an auxiliary heating crucible (202a) arranged in a furnace shell (103b), the auxiliary heating crucible (202a) is provided with a placement groove (202b), and a rocker (202c) is fixedly connected to the side wall of the auxiliary heating crucible (202a); The rocker (202c) penetrates the furnace shell (103b) and is rotatably connected to the furnace shell (103b).

5. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 4, characterized in that: The partition assembly (203) comprises a graphite partition (203a) arranged on the inner side wall of the main heating crucible (201a), and the side wall of the graphite partition (203a) is provided with mesh holes (203b).

6. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 5, characterized in that: The heating assembly (204) comprises a main heating coil (204a) arranged in a furnace shell (103b), and a secondary heating coil (204b) is arranged in the furnace shell (103b).

7. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 6, characterized in that: The feeding assembly (301) comprises a fixing groove (301a) arranged on the furnace shell (103b), the inner side wall of the fixing groove (301a) is fixedly connected with a feeding cavity (301b), and the inner side wall of the feeding cavity (301b) is provided with a graphene copper block (301c).

8. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 7, characterized in that: The water cooling component (302) includes a primary water cooling (302a) arranged in a furnace shell (103b), a crystallizer (302b) is arranged in the furnace shell (103b), and a secondary water cooling (302c) is arranged on the lower side of the bracket (103a).

9. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 8, characterized in that: The connection assembly (303) comprises a plug rod (303a) arranged in the flow channel (201b), and a traction device (303b) is provided on the lower side of the bracket (103a).

10. The method and device for preparing graphene copper composite materials by continuous feeding and continuous casting according to claim 9, characterized in that: The vacuum component (304) comprises a first vacuum valve (304a) arranged on the side wall of the furnace shell (103b), and a second vacuum valve (304b) is arranged on the side wall of the feeding chamber (301b).

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