CN112695179B - Preparation method of graphene metal composite plate - Google Patents
Preparation method of graphene metal composite plate Download PDFInfo
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- CN112695179B CN112695179B CN202011590664.XA CN202011590664A CN112695179B CN 112695179 B CN112695179 B CN 112695179B CN 202011590664 A CN202011590664 A CN 202011590664A CN 112695179 B CN112695179 B CN 112695179B
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Abstract
The invention discloses a preparation method of a graphene metal composite plate, which comprises the steps of polishing, cleaning, drying, heating, rolling and heat treatment. According to the invention, graphene is used as a connecting substance between two metal plates, and the rolling and heat treatment processes are matched, so that the improvement of the composite stability of the metal plates is effectively realized, the strength of the joint of the metal plates is improved, and the fracture is prevented.
Description
Technical Field
The invention relates to the technical field of composite plate preparation, in particular to a preparation method of a graphene metal composite plate.
Background
Graphene is a two-dimensional atom-scale, hexagonal carbon allotrope, with one atom at each vertex, which is the basic building block for other allotropes, and which can also be considered as an indefinite large aromatic molecule, the ultimate case for the planar polycyclic aromatic family;
when metal composite plates are rolled in the existing market, the heated metal plates are rolled through a rolling mill, the strength of the joints of the metal plates cannot be enhanced, and the situation of breakage is easy to occur.
Disclosure of Invention
The invention provides a preparation method of a graphene metal composite plate, and aims to solve the problems that the strength of a joint of metal plates cannot be enhanced and the metal plates are easy to break because only the heated metal plates are rolled by a rolling machine in the background technology.
The invention provides a preparation method of a graphene metal composite plate, which specifically comprises the following steps:
s1, grinding: polishing the outer surfaces of the plurality of metal plates by using a polisher, and polishing by using the polisher;
s2, cleaning: after the step S1 is finished, placing a plurality of metal plates in a cleaning pool, pouring a dilute hydrochloric acid solution into the cleaning pool, soaking for 20-25 minutes, wherein the height of the solution is higher than that of the upper end face of the uppermost metal plate, heating the solution to 20-26 ℃ during soaking, clamping the metal plates after soaking is finished, repeatedly washing by using flowing distilled water, and washing for 1-3 minutes;
s3, drying: after the cleaning in the step S2 is completed, drying the metal plate;
s4, heating: putting prepared graphene into a heating furnace, starting the heating furnace, increasing the temperature inside the heating furnace by 360 DEG and 400 ℃, keeping the temperature for 10-14 minutes after the graphene is completely dissolved, closing a power supply of the heating furnace, taking out the graphene, uniformly coating the melted graphene on the outer surfaces of a plurality of metal plates, and mutually attaching one sides of the metal plates coated with the graphene;
s5, rolling: feeding the metal plates which are mutually attached in the step S4 into a rolling mill, enabling the metal plates which are attached together to pass between a pair of rollers with opposite rotating directions, and rolling a plurality of metal plates through extrusion;
s6, heat treatment: after the step S5 is completed, a heat treatment process of the metal plate is performed, and the heat treatment process of the metal plate specifically includes the steps of:
m1, normalizing: heating the metal plate in a heating furnace, raising the temperature of the metal plate in the heating furnace to be within the range of 900-;
m2, tempering: the method comprises the following steps that in the first stage, the temperature of a metal plate in a heating furnace is raised to 160-plus-200 ℃ by adopting a low-temperature tempering mode, the metal plate is kept for 1-2 hours, after the first stage is finished, medium-temperature tempering in the second stage is started, the temperature is raised to 210-plus-300 ℃ and kept for 1-2 hours, the temperature is raised to 310-plus-350 ℃ by high-temperature tempering in the third stage, the metal plate is kept for 1-2 hours, after the heat preservation is finished, the metal plate is taken out of the heating furnace, is placed in water to be cooled, and is kept for heat after being cooled to 50-100 ℃;
m3, quenching the metal plate;
m4, after the M3 step is completed, the metal plate is annealed.
Preferably, after the M2 step is completed, the metal plate is placed in the heating furnace again, a power switch of the heating furnace is turned on, the metal plate is heated, the temperature of the metal plate is raised to be within the range of 890-1100 ℃, the metal plate is placed in mineral oil for cooling after being subjected to heat preservation for 2 to 3 hours, the metal plate is cooled to be within the range of 550-600 ℃, and the metal plate is subjected to heat preservation for 0.5 to 1.5 hours.
Preferably, the important steps of the M4 annealing are as follows: and placing the metal plate in the heating furnace again, starting a power switch of the heating furnace, heating the metal plate, raising the temperature of the metal plate to be within the range of 830-880 ℃, preserving heat for 3-4 hours, taking the metal plate out of the heating furnace after the heat preservation is finished, placing the metal plate in air for natural cooling, and cooling to room temperature.
Preferably, the step of drying in S3 specifically includes: and wiping the outer surface of the metal plate by using a towel, and drying the outer surface of the metal plate by using a dryer after wiping.
Preferably, the thickness of the graphene coated in the S4 step is 1-2 cm.
Preferably, in the step of cleaning and washing in S2, a support block is placed at the bottom of the cleaning tank, and a support block is placed between two adjacent metal plates.
Preferably, in the step of S1 grinding, after the grinding by the grinding machine is finished, the operator performs the grinding again on the outer surface of the metal plate by using sandpaper.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, graphene is used as a connecting substance between two metal plates, and the processes of rolling and heat treatment are matched, so that the improvement of the composite stability of the metal plates is effectively realized, the strength of the joint of the metal plates is improved, and the fracture is prevented.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
The invention provides a preparation method of a graphene metal composite plate, which specifically comprises the following steps:
s1, grinding: the outer surfaces of the metal plates are polished by a polisher, and after polishing of the polisher is finished, an operator polishes the outer surfaces of the metal plates again through abrasive paper; the effect of polishing is mainly in order to realize the clearance with the rust for the metal sheet is when the complex, and the condition of inside bubble prevents to appear in the complete contact.
S2, cleaning: after the step S1 is completed, placing a plurality of metal plates in a cleaning pool, pouring a dilute hydrochloric acid solution into the cleaning pool, wherein the height of the solution is higher than that of the upper end face of the uppermost metal plate, soaking for 20 minutes, heating the solution to 20 ℃ during the soaking, clamping the metal plates after the soaking is finished, repeatedly washing the metal plates by using flowing distilled water for 1 minute, placing a supporting block at the bottom of the cleaning pool, and placing the supporting block between every two adjacent metal plates; the step is used for further derusting the surface of the metal plate, and simultaneously cleaning the iron powder left after polishing.
S3, drying: and after the cleaning in the step S2 is finished, drying the metal plate, wiping the outer surface of the metal plate by using a towel, and after the wiping is finished, drying the outer surface of the metal plate by using a dryer.
S4, heating: putting prepared graphene into a heating furnace, starting the heating furnace, raising the temperature inside the heating furnace by 360 ℃, keeping the temperature for 10 minutes after the graphene is completely dissolved, closing a power supply of the heating furnace, taking out the graphene, uniformly coating the molten graphene on the outer surfaces of a plurality of metal plates, and mutually attaching one sides of the metal plates coated with the graphene, wherein the thickness of the coated graphene is 1 cm; the stability of graphite alkene because inside atomic arrangement, the stability that causes graphite alkene is good very high, and the intensity of graphite alkene is one hundred times of steel to as the connecting material of two metal sheets, the intensity of the junction that has improved that can be fine avoids appearing cracked condition.
S5, rolling: feeding the metal plates which are mutually attached in the step S4 into a rolling mill, enabling the metal plates which are attached together to pass between a pair of rollers with opposite rotating directions, and rolling a plurality of metal plates through extrusion;
s6, heat treatment: after the step S5 is completed, a heat treatment process of the metal plate is performed, and the heat treatment process of the metal plate specifically includes the steps of:
m1, normalizing: heating the metal plate in a heating furnace, raising the temperature of the metal plate in the heating furnace to be within 900 ℃, preserving the heat for 3 hours, cooling the metal plate to be 500 ℃ along with the furnace, taking the metal plate out of the heating furnace, naturally cooling the metal plate in the air, and refining crystal grains and uniformly distributing carbide in the metal plate by utilizing high-temperature heating and rapid cooling;
m2 and tempering: in the first stage, raising the temperature of the metal plate in a heating furnace to 160 ℃ by adopting a low-temperature tempering mode, preserving heat for 1 hour, after the first stage is finished, starting medium-temperature tempering in the second stage, raising the temperature to 210 ℃, preserving heat for 1 hour, raising the temperature to 310 ℃ by high-temperature tempering in the third stage, preserving heat for 1 hour, taking the metal plate out of the heating furnace after heat preservation is finished, placing the metal plate in water for cooling, and preserving heat after the metal plate is cooled to 50 ℃;
m3, quenching the metal plate, placing the metal plate in the heating furnace again, starting a power switch of the heating furnace to heat the metal plate, raising the temperature of the metal plate to be within 890 ℃, preserving heat for 2 hours, then placing the metal plate in mineral oil to realize cooling, cooling the metal plate to 550 ℃, and preserving heat for 0.5 hour;
m4, after accomplishing M3 step, carry out the processing of annealing to the metal sheet, place the metal sheet in the heating furnace once more, open the switch of heating furnace, heat the metal sheet, rise the temperature of metal sheet to the within range of 830 degrees centigrade, keep warm for 3 hours, after keeping warm, take out the metal sheet from the heating furnace, place and carry out natural cooling in the air, cool to the room temperature, thermal treatment can be with the anti fracture effect and the intensity of polylith metal sheet and graphite alkene, with the practical life who prolongs composite metal plate.
Example 2
The invention provides a preparation method of a graphene metal composite plate, which specifically comprises the following steps:
s1, grinding: the outer surfaces of the metal plates are polished by a polisher, and after polishing of the polisher is finished, an operator polishes the outer surfaces of the metal plates again through abrasive paper; the effect of polishing is mainly in order to realize the clearance with the rust for the metal sheet is when the complex, and the condition of inside bubble prevents to appear in the complete contact.
S2, cleaning: after the step S1 is completed, placing a plurality of metal plates in a cleaning pool, pouring a dilute hydrochloric acid solution into the cleaning pool, wherein the height of the solution is higher than that of the upper end face of the uppermost metal plate, soaking for 22 minutes, heating the temperature of the solution to 23 ℃, clamping the metal plates after soaking is finished, repeatedly washing the metal plates by using flowing distilled water for 2 minutes, placing a supporting block at the bottom of the cleaning pool, and placing the supporting block between every two adjacent metal plates; the step is used for further derusting the surface of the metal plate, and simultaneously cleaning the iron powder left after polishing.
S3, drying: and after the cleaning in the step S2 is finished, drying the metal plate, wiping the outer surface of the metal plate by using a towel, and after the wiping is finished, drying the outer surface of the metal plate by using a dryer.
S4, heating: putting prepared graphene into a heating furnace, starting the heating furnace, raising the temperature inside the heating furnace to 380 ℃, keeping the temperature for 12 minutes after the graphene is completely dissolved, then closing a power supply of the heating furnace, taking out the graphene, uniformly coating the molten graphene on the outer surfaces of a plurality of metal plates, and mutually bonding one sides of the metal plates coated with the graphene, wherein the thickness of the coated graphene is 1.5 cm; the graphene has good stability due to the stability of the internal atomic arrangement, and the strength of the graphene is one hundred times that of steel, so that the graphene serving as a connecting material of two metal plates can well improve the strength of a joint and avoid the occurrence of a fracture condition.
S5, rolling: feeding the metal plates which are mutually attached in the step S4 into a rolling mill, enabling the metal plates which are attached together to enter and pass through a pair of rollers with opposite rotating directions, and rolling a plurality of metal plates through extrusion;
s6, heat treatment: after the step S5 is completed, the heat treatment process of the metal plate is performed, and the heat treatment process of the metal plate specifically includes the steps of:
m1, normalizing: heating the metal plate in a heating furnace, raising the temperature of the metal plate in the heating furnace to 940 ℃, preserving heat for 3.5 hours, cooling the metal plate to 600 ℃ along with the furnace, taking the metal plate out of the heating furnace, naturally cooling the metal plate in the air, and refining grains in the metal plate and uniformly distributing carbide by utilizing high-temperature heating and rapid cooling;
m2, tempering: in the first stage, raising the temperature of the metal plate in a heating furnace to 180 ℃ by adopting a low-temperature tempering mode, preserving heat for 1.5 hours, after the first stage is finished, starting medium-temperature tempering in the second stage, raising the temperature to 250 ℃, preserving heat for 1.5 hours, raising the temperature to 330 ℃ by high-temperature tempering in the third stage, preserving heat for 1.5 hours, after the heat preservation is finished, taking the metal plate out of the heating furnace, putting the metal plate in water to realize cooling, and preserving heat after the metal plate is cooled to 70 ℃;
m3, quenching the metal plate, placing the metal plate in the heating furnace again, starting a power switch of the heating furnace to heat the metal plate, raising the temperature of the metal plate to be within 900 ℃, preserving heat for 2.5 hours, then placing the metal plate in mineral oil to realize cooling, cooling the metal plate to 580 ℃, and preserving heat for 1 hour;
m4, after the M3 step is completed, annealing treatment is carried out on the metal plate, the metal plate is placed in the heating furnace again, a power switch of the heating furnace is turned on, the metal plate is heated, the temperature of the metal plate is raised to a range of 850 ℃, heat preservation is carried out for 3.5 hours, after the heat preservation is finished, the metal plate is taken out of the heating furnace, natural cooling is carried out in the air after the heat preservation is finished, and the metal plate is cooled to the room temperature, so that the anti-fracture effect and the anti-fracture strength of the plurality of metal plates and graphene can be achieved through heat treatment, and the practical service life of the composite metal plate can be prolonged.
Example 3
The invention provides a preparation method of a graphene metal composite plate, which specifically comprises the following steps:
s1, grinding: the outer surfaces of the metal plates are polished by a polisher, and after polishing is finished by the polisher, an operator polishes the outer surfaces of the metal plates again by abrasive paper; the effect of polishing is mainly in order to realize the clearance with the rust for the metal sheet is when the complex, and the condition of inside bubble prevents to appear in the complete contact.
S2, cleaning: after the step S1 is completed, placing a plurality of metal plates in a cleaning pool, pouring a dilute hydrochloric acid solution into the cleaning pool, soaking the metal plates for 25 minutes, heating the solution to 26 ℃ during the soaking, clamping the metal plates after the soaking is finished, repeatedly washing the metal plates by using flowing distilled water for 3 minutes, placing a supporting block at the bottom of the cleaning pool, and placing the supporting block between every two adjacent metal plates; the step is used for further derusting the surface of the metal plate, and simultaneously cleaning the iron powder left after polishing.
S3, drying: and after the cleaning in the step S2 is finished, drying the metal plate, wiping the outer surface of the metal plate by using a towel, and after the wiping is finished, drying the outer surface of the metal plate by using a dryer.
S4, heating: putting prepared graphene into a heating furnace, starting the heating furnace, raising the temperature inside the heating furnace to 400 ℃, keeping the temperature for 14 minutes after the graphene is completely dissolved, closing a power supply of the heating furnace, taking out the graphene, uniformly coating the molten graphene on the outer surfaces of a plurality of metal plates, and mutually attaching one sides of the metal plates coated with the graphene, wherein the thickness of the coated graphene is specifically 2 cm; the stability of graphite alkene because inside atomic arrangement, the stability that causes graphite alkene is good very high, and the intensity of graphite alkene is one hundred times of steel to as the connecting material of two metal sheets, the intensity of the junction that has improved that can be fine avoids appearing cracked condition.
S5, rolling: feeding the metal plates which are mutually attached in the step S4 into a rolling mill, enabling the metal plates which are attached together to enter and pass through a pair of rollers with opposite rotating directions, and rolling a plurality of metal plates through extrusion;
s6, heat treatment: after the step S5 is completed, the heat treatment process of the metal plate is performed, and the heat treatment process of the metal plate specifically includes the steps of:
m1, normalizing: heating the metal plate in a heating furnace, raising the temperature of the metal plate in the heating furnace to 980 ℃, preserving the heat for 4 hours, cooling the metal plate to 620 ℃ along with the furnace, taking the metal plate out of the heating furnace, naturally cooling the metal plate in the air, and refining crystal grains in the metal plate and uniformly distributing carbide by utilizing high-temperature heating and rapid cooling;
m2 and tempering: in the first stage, raising the temperature of the metal plate in a heating furnace to 200 ℃ by adopting a low-temperature tempering mode, preserving heat for 2 hours, after the first stage is finished, starting medium-temperature tempering in the second stage, raising the temperature to 300 ℃, preserving heat for 2 hours, raising the temperature to 350 ℃ by high-temperature tempering in the third stage, preserving heat for 2 hours, taking the metal plate out of the heating furnace after heat preservation is finished, placing the metal plate in water for cooling, and preserving heat after the metal plate is cooled to 100 ℃;
m3, quenching the metal plate, placing the metal plate in the heating furnace again, starting a power switch of the heating furnace to heat the metal plate, raising the temperature of the metal plate to be within 1100 ℃, preserving heat for 3 hours, then placing the metal plate in mineral oil to realize cooling, cooling the metal plate to be 600 ℃, and preserving heat for 1.5 hours;
m4, after accomplishing M3 step, carry out the processing of annealing to the metal sheet, place the metal sheet in the heating furnace once more, open the switch of heating furnace, heat the metal sheet, rise the temperature of metal sheet to 880 degrees centigrade within range, keep warm for 4 hours, after keeping warm, take out the metal sheet from the heating furnace, place and carry out natural cooling in the air, cool to the room temperature, thermal treatment can be with the anti fracture effect and the intensity of polylith metal sheet and graphite alkene, with the practical life who prolongs composite metal plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. The preparation method of the graphene metal composite plate is characterized by comprising the following steps:
s1, grinding: polishing the outer surfaces of the plurality of metal plates by using a polisher, and polishing by using the polisher;
s2, cleaning: after the step S1 is finished, placing a plurality of metal plates in a cleaning pool, pouring a dilute hydrochloric acid solution into the cleaning pool, soaking for 20-25 minutes, wherein the height of the solution is higher than that of the upper end face of the uppermost metal plate, heating the solution to 20-26 ℃ during soaking, clamping the metal plates after soaking is finished, repeatedly washing by using flowing distilled water, and washing for 1-3 minutes;
s3, drying: after the cleaning in the step S2 is completed, drying the metal plate;
s4, heating: putting prepared graphene into a heating furnace, starting the heating furnace, increasing the temperature inside the heating furnace by 360 DEG and 400 ℃, keeping the temperature for 10-14 minutes after the graphene is completely dissolved, closing a power supply of the heating furnace, taking out the graphene, uniformly coating the melted graphene on the outer surfaces of a plurality of metal plates, and mutually attaching one sides of the metal plates coated with the graphene;
s5, rolling: feeding the metal plates which are mutually attached in the step S4 into a rolling mill, enabling the metal plates which are attached together to pass between a pair of rollers with opposite rotating directions, and rolling a plurality of metal plates through extrusion;
s6, heat treatment: after the step S5 is completed, a heat treatment process of the metal plate is performed, and the heat treatment process of the metal plate specifically includes the steps of:
m1, normalizing: heating the metal plate in a heating furnace, raising the temperature of the metal plate in the heating furnace to be within the range of 900-;
m2 and tempering: the method comprises the following steps that in the first stage, the temperature of a metal plate in a heating furnace is raised to 160-plus-200 ℃ by adopting a low-temperature tempering mode, the metal plate is kept for 1-2 hours, after the first stage is finished, medium-temperature tempering in the second stage is started, the temperature is raised to 210-plus-300 ℃ and kept for 1-2 hours, the temperature is raised to 310-plus-350 ℃ by high-temperature tempering in the third stage, the metal plate is kept for 1-2 hours, after the heat preservation is finished, the metal plate is taken out of the heating furnace, is placed in water to be cooled, and is kept for heat after being cooled to 50-100 ℃;
m3, quenching the metal plate;
m4, after the M3 step is completed, annealing the metal plate;
after the step M2 is completed, the metal plate is placed in the heating furnace again, a power switch of the heating furnace is turned on, and the metal plate is heated;
raising the temperature of the metal plate to be within the range of 890-1100 ℃, preserving the heat for 2-3 hours, then placing the metal plate in mineral oil to realize cooling, cooling the metal plate to be at the temperature of 550-600 ℃, and preserving the heat for 0.5-1.5 hours;
the important steps of the M4 annealing are as follows:
placing the metal plate in the heating furnace again, starting a power switch of the heating furnace, and heating the metal plate;
raising the temperature of the metal plate to be within the range of 830-880 ℃, preserving heat for 3-4 hours, taking the metal plate out of the heating furnace after the heat preservation is finished, placing the metal plate in air for natural cooling, and cooling to room temperature;
the S3 drying step specifically comprises the following steps: wiping the outer surface of the metal plate by using a towel, and drying the outer surface of the metal plate by using a dryer after wiping;
the thickness of the graphene coated in the step S4 is specifically 1-2 cm;
when the step of S2 cleaning is carried out, a supporting block is placed at the bottom of the cleaning pool, and a supporting block is placed between two adjacent metal plates; in the step of S1 grinding, after the grinding by the grinding machine is finished, an operator grinds the outer surface of the metal plate again by using sand paper.
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