CN113512689B - Mold and method for preparing spiral carbon fiber reinforced metal composite material - Google Patents
Mold and method for preparing spiral carbon fiber reinforced metal composite material Download PDFInfo
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- CN113512689B CN113512689B CN202110764228.8A CN202110764228A CN113512689B CN 113512689 B CN113512689 B CN 113512689B CN 202110764228 A CN202110764228 A CN 202110764228A CN 113512689 B CN113512689 B CN 113512689B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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Abstract
The invention provides a mold and a method for preparing a spiral carbon fiber reinforced metal composite material, which relate to the technical field of composite material forming, can prepare the spiral carbon fiber reinforced metal composite material, improve the mechanical property of the composite material and enable the composite material to have the capacity of bearing large deformation; the die comprises a first die and a second die which can realize die assembly, wherein a cavity can be formed in the first die and the second die after the first die and the second die are assembled; two ends of the cavity are respectively provided with a carbon fiber fixing hole groove for fixing the spiral carbon fiber; one end of the cavity is provided with an upward riser for pouring molten metal; the diameter of the spiral carbon fiber is 3-25 mm, and the pitch of the spiral section is 5-15 mm; during preparation, the copper pipe and the carbon fiber are fixed in a cavity, and then aluminum liquid is poured through a riser. The technical scheme provided by the invention is suitable for the preparation process of the copper-clad aluminum or pure aluminum composite material.
Description
Technical Field
The invention relates to the technical field of composite material forming, in particular to a mold and a method for preparing a spiral carbon fiber reinforced metal composite material.
Background
In the research on biological materials, chiral microstructures are considered as a general structural principle, wherein helical microstructures are widely existed in natural biological materials, such as cellulose micro-helical structures in luffa tendril, collagen helical fibers in bone units, and the like. Chiral helical fibers are more ductile and elastic than straight fibers due to their three-dimensional helical structure with constant curvature and constant twist, so chiral biocomposites are generally able to withstand large deformations. The excellent performance of the biological composite material can inspire that a novel composite material is designed and prepared from a bionic angle.
The copper-clad aluminum composite material is a material with good comprehensive performance, has the advantages of good electrical conductivity and thermal conductivity of copper, light weight and low price of aluminum, and has wide application prospect in the fields of electricity, automobiles and energy sources. However, the mechanical property of the copper-clad aluminum is mainly determined by the property of the core aluminum, and the tensile strength of the aluminum is lower than that of the copper, so that the tensile strength of the copper-clad aluminum composite material is lower than that of the copper conductor. When the cable is subjected to certain tensile force, the cable is easy to crack, the current and signal transmission is influenced, and the popularization and the application of the cable are limited due to the defect.
The carbon fiber has the advantages of small density, high strength, good fatigue resistance, small thermal expansion coefficient and the like, and is the most commonly used reinforcement of the current composite material. Meanwhile, the continuous carbon fiber is soft, can be woven, has strong designability, and is widely applied in a plurality of fields. Although long carbon fibers have extremely high tensile strength in the axial direction, the elongation after fracture is less than 2%, and they have almost no ductility. Inspired by the spiral microstructure of the biomaterial, the long carbon fiber is prepared into the spiral carbon fiber with a three-dimensional spiral structure and is used as a reinforcement and added into the copper-clad aluminum composite material through a proper process to improve the tensile strength of the composite material. Moreover, the spiral carbon fiber has larger ductility and elasticity, which means that the composite material can be subjected to subsequent processing by drawing, extruding and other processes, so that the application value of the composite material is improved.
At present, the research reports about the spiral fiber are all on a microscopic scale, and most of matrixes are epoxy resin. For the spiral carbon fiber under the macroscopic scale, a preparation technology that the matrix is a copper-clad aluminum composite material is not reported. Related documents (beginning sister-in-law. copper-clad aluminum lengthened carbon fiber core filling continuous casting process and interface forming mechanism [ D ]. Beijing university of science and technology, 2018.) report that pure copper (T1 red copper containing 99.7% of copper), pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum) and long carbon fiber are used as raw materials, and the continuous casting process is utilized: the temperature of the aluminum liquid is 800 ℃, the temperature of the copper liquid is 1250 ℃, the continuous casting speed is 80mm/min, and the copper-clad aluminum lengthened carbon fiber composite material with the outer diameter of 8mm, the thickness of the copper layer of 0.3mm and the diameter of the carbon fiber of 1mm is prepared. However, the elongation of the long and straight carbon fiber after fracture is too small to perform subsequent large deformation processing, which affects the large application range of the composite material.
Accordingly, there is a need to develop a mold and method for preparing a spiral carbon fiber reinforced metal composite material that addresses the deficiencies of the prior art to address or mitigate one or more of the problems set forth above.
Disclosure of Invention
In view of this, the invention provides a mold and a method for preparing a spiral carbon fiber reinforced metal composite material, which can improve the mechanical property of a copper-clad aluminum composite material and enable the copper-clad aluminum composite material to have the capability of bearing large deformation.
In one aspect, the invention provides a mold for preparing a spiral carbon fiber reinforced metal composite material, which is characterized by comprising a first mold and a second mold, wherein the first mold and the second mold can be matched and then form a cavity inside the first mold and the second mold;
two ends of the cavity are respectively provided with a carbon fiber fixing hole groove for fixing the spiral carbon fiber;
and one end of the cavity is provided with an upward riser for pouring molten metal.
The above aspect and any possible implementation manner further provide an implementation manner, in which the spiral carbon fiber includes a spiral section and long straight sections respectively disposed at two ends of the spiral section; the long straight section is arranged in the carbon fiber fixing hole groove.
The above aspect and any possible implementation manner further provide an implementation manner, wherein the diameter of the spiral carbon fiber is 3-25 mm, and the pitch of the spiral section is 5-15 mm.
In accordance with the above aspect and any possible implementation manner, there is further provided an implementation manner, wherein the first mold and the second mold are made of graphite.
In the aspect and any possible implementation manner described above, a plurality of positioning holes are correspondingly formed in the first mold and the second mold, and the first mold and the second mold are fixed and positioned by using bolt and nut sets after mold assembly.
The above aspects and any possible implementations further provide an implementation in which the first mold and the second mold are clamped and fixed by a "C" clamp after being clamped.
The above aspect and any possible implementation further provide an implementation in which the inner diameter of the carbon fiber fixing hole groove is equal to the diameter of the long straight section of the spiral carbon fiber.
The above aspect and any possible implementation manner further provide an implementation manner, where the mold uses a cushion block support manner to realize an inclined state in a pouring process, that is: the mould can be placed straight or inclined at a certain angle during casting.
In another aspect, the present invention provides a method for preparing a helical carbon fiber reinforced metal composite, characterized in that said method is carried out using a mold as described in any of the above; the method comprises the following steps:
s1, preparing a metal pipe matched with the die cavity and spiral carbon fibers matched with the carbon fiber fixing hole grooves;
s2, fixing the metal pipe in the cavity through the closing of the first mold and the second mold, and fixing two ends of the spiral carbon fiber in corresponding carbon fiber fixing hole grooves;
s3, melting the metal to be poured into molten metal, and pouring the molten metal into the cavity of the preheated mold through a riser under the action of protective atmosphere;
s4, cooling and demoulding to obtain the spiral carbon fiber reinforced composite material;
the metal tube is omitted when preparing the composite material of the single metal and the spiral carbon fiber.
In accordance with the foregoing aspect and any one of the possible implementations, there is further provided an implementation manner, in which the metal pipe is made of copper, and the metal to be poured is aluminum.
The above aspect and any possible implementation manner further provide an implementation manner, wherein the length of the metal tube is 120-400 mm, the wall thickness is 1.5-6.5 mm, and the outer diameter is 20-50 mm; the length of the metal pipe is smaller than that of the cavity, and the metal pipe is fixed in the cavity and is arranged in a non-protruding mode relative to a bottom port of the riser, so that the molten metal is prevented from being poured onto the outer wall of the metal pipe.
According to the aspects and any possible implementation manner, an implementation manner is further provided, and when the aluminum liquid is prepared, the solid aluminum is firstly polished to remove a surface oxide layer, and then the solid aluminum is placed in a crucible for heating; the heating process comprises the following steps: raising the temperature to 760-860 ℃ at a temperature raising rate of 20-50 ℃/min, and preserving the temperature for 20-40 min.
The above aspect and any possible implementation manner further provide an implementation manner, and the preheating process of the mold includes: preheating to 300-400 ℃, and preserving heat for 20-30 minutes.
The above aspect and any possible implementation manner further provide an implementation manner, and the preparation process of the spiral carbon fiber includes: pre-winding the original carbon fiber bundle on a metal wire, winding the spiral section on the cylindrical rod body according to a set screw pitch, and extracting the cylindrical rod body to obtain spiral carbon fibers; the metal wire is made of the same material as the metal pipe or the molten metal.
Compared with the prior art, one of the technical schemes has the following advantages or beneficial effects: the process is simple and easy to operate, the flow is short, the parameters are stable and controllable, and the spiral carbon fiber reinforced metal composite material can be prepared in a short time, at a lower pressure and in a wider temperature range;
another technical scheme in the above technical scheme has the following advantages or beneficial effects: the preparation is efficient, and the shaping rate is high, and the skew central point of spiral carbon fiber can be solved to novel mould, distributes inhomogeneous problem at the base member, and mould simple structure, and the mould convenient and fast that opens and shuts can repetitious continuous operation, and is longe-lived. The high-efficiency preparation of the spiral carbon fiber reinforced copper clad aluminum composite material can be realized;
another technical scheme in the above technical scheme has the following advantages or beneficial effects: the designability is good, the dimensional accuracy is high, the copper tube and the spiral carbon fiber prefabricated part are independently carried out, and the size of the prefabricated part can be designed according to the requirement, so that the dimensional accuracy of a final finished product is ensured;
another technical scheme in the above technical scheme has the following advantages or beneficial effects: the flexibility is high, the whole preparation process is divided into a plurality of sections to be respectively carried out, each section of process can be independently carried out according to the production condition, and a certain inclination angle (10-30 degrees) can be provided for the mold, so that the gravity effect can be better exerted, and the fluidity of the aluminum liquid in the mold cavity is better;
another technical scheme among the above-mentioned technical scheme has following advantage or beneficial effect: in the preparation process, inert gases such as argon are introduced for protection, and certain pressure is maintained, so that the problem of oxidation of a copper pipe and aluminum liquid is effectively prevented, and the interface combination is better ensured; the pressure can enable the carbon fibers to be impregnated with the aluminum liquid, so that the carbon fibers and the aluminum liquid are well combined;
another technical scheme in the above technical scheme has the following advantages or beneficial effects: the prepared composite material can be drawn into a composite wire by formulating a proper drawing process; in the drawing process, copper and aluminum have good plasticity, and the spiral carbon fiber has better ductility compared with straight carbon fiber and can deform along with a matrix; the composite wire obtained by drawing has small change of conductivity due to skin effect, and the tensile strength of the composite wire can be improved by adding carbon fibers; meanwhile, the spiral structure can disperse stress, so that the stress is transmitted along the spiral surface, stress concentration is reduced, and the fracture toughness of the composite lead is improved;
another technical scheme among the above-mentioned technical scheme has following advantage or beneficial effect: the problems that the tensile strength of the copper-clad aluminum composite material is low, and subsequent drawing processing cannot be performed after the straight long carbon fiber is added are solved; by changing the size of the die, the composite material of the spiral carbon fiber and the copper-clad aluminum with larger size is cast, and after drawing, the composite wire with enough length can be obtained, so that the application value and the range of the composite wire are improved.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a top view of a mold for making a helical carbon fiber reinforced metal composite provided by one embodiment of the present invention;
FIG. 2 is a front view of a parting plane of a mold for making a spiral carbon fiber reinforced metal composite according to one embodiment of the present invention;
FIG. 3 is a schematic illustration of a process for preparing a spiral carbon fiber reinforced metal composite according to one embodiment of the present invention;
FIG. 4 is a schematic view of a manufacturing process for manufacturing a helical carbon fiber reinforced metal composite mold with a 15-degree inclination according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a prepared spiral carbon fiber reinforced copper clad aluminum composite material provided by an embodiment of the invention;
fig. 6 is a schematic diagram of a composite wire obtained by drawing a prepared composite material according to an embodiment of the present invention.
Wherein, in the figure:
1. a riser; 2. a carbon fiber fixing hole groove; 3. positioning holes; 4. aluminum liquid; 5. a copper pipe; 6. helical carbon fibers; 7. cushion blocks; 8. a copper layer; 9. and (4) filling core aluminum.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The method mainly aims at the problems that in the prior art, the tensile strength of the copper-clad aluminum composite material is low, and the composite material cannot be subjected to subsequent drawing processing after the straight carbon fiber reinforcement is added; the carbon fiber is soft, the spiral shape is difficult to keep stable in the matrix, the spiral carbon fiber is impacted by high-temperature aluminum liquid to deviate in the casting process, the distribution in the matrix is uneven, and even the surface of the aluminum liquid can be leaked, so that the problems of difficult forming, high failure rate and the like are solved. The invention provides a mold and a method for preparing a spiral carbon fiber reinforced metal composite material, wherein long straight carbon fibers are prefabricated into spiral carbon fibers with a spiral structure, and the spiral carbon fibers are added into a copper-clad aluminum composite material, so that the unique three-dimensional geometric shape and the twisting, stretching and coupling deformation of the spiral carbon fibers can improve the mechanical property of the copper-clad aluminum composite material to a certain extent, and endow the copper-clad aluminum composite material with the capability of bearing large deformation such as drawing, extrusion and the like.
The invention designs a novel special die, and particularly designed hole grooves at two ends of the die can be used for fixing carbon fibers, considering that the carbon fibers are soft, and are easily influenced by the impact of high-temperature aluminum liquid and the tension of the aluminum liquid during casting, so that the spiral carbon fibers are difficult to keep stable in shape and are unevenly distributed in a matrix. As shown in fig. 1-3, the specific features of the mold include:
1) the mould is a casting mould made of graphite and is cuboid in overall shape; a cavity for molding is axially arranged in the mold and is used for placing a copper pipe 5 in the application; in order to ensure that the spiral carbon fiber is stable in shape in the die and cannot be impacted by aluminum liquid to deviate from the central position during casting, a section of hole groove with certain length, namely a carbon fiber fixing hole groove 2 is respectively designed at the centers of two ends of the die, and the diameter of the hole groove is equal to the diameter of the carbon fiber; before casting, fixing the long straight sections at two ends of the spiral carbon fiber in the hole groove, and applying a certain pretightening force to ensure that the spiral carbon fiber is positioned at the center of the mold; the carbon fiber fixing hole groove 2 communicates the cavity with the outside; one end of the cavity is provided with an upward opening, namely a riser 1, and the riser 1 is used for pouring aluminum liquid into the cavity from the riser 1 when the copper-clad aluminum composite material is prepared;
2) in order to conveniently take out the casting, the die is divided into a left part and a right part, the die opening mode is left-right die opening, and as a top view in figure 1, the central axis of the upper surface of the die is downwards cut into sections which are used as the interface of the left die and the right die; when the device is used, a left die and a right die are separated, the copper pipe 5 is placed in the cavity divided into two parts, the spiral carbon fiber 6 is placed in the copper pipe 5, two ends of the spiral carbon fiber 6, which are divided into two ends of the copper pipe 5, extend out of the carbon fiber fixing hole groove 2, and then the left die and the right die are closed to fix two ends of the copper pipe 5 and the spiral carbon fiber 6; the length of the cavity is greater than that of the copper pipe 5, when the copper pipe 5 is placed in the cavity, one end of the copper pipe 5 is attached to the end face of the non-riser end of the cavity, the other end of the copper pipe 5 is arranged in the cavity in a retracted or flush manner, and the protruding copper pipe 5 cannot be seen by the riser (namely, the non-protruding arrangement), so that the aluminum liquid is prevented from being adhered to the outer wall of the copper pipe 5 when being filled into the cavity;
3) the left die and the right die are respectively provided with a plurality of corresponding positioning holes 3, so that pins can be used for ensuring the correct position of the dies when the dies are closed, no deviation occurs, and the left die and the right die are fixed; the left die and the right die do not need to be completely divided into two, so that the feeder 1 is ensured to be in a complete integral form, and the problem of tightness matching when the non-integral feeder is closed is avoided;
4) after the left die and the right die are closed, the left die and the right die can be fixed by a C-shaped clamp or a long bolt and a nut can penetrate through the positioning hole 3 to fix the dies;
5) the roughness Ra value of the inner surface of the die cavity is 12.5, and the requirement of the surface of a casting is met.
The preparation process of the composite material based on the novel mold comprises the following steps:
Example 1:
1) the copper pipe is made of pure copper (T1 red copper containing 99.7% of copper) and has the dimensions as follows: the outer diameter is 20mm, the wall thickness is 3mm, and the length is 120 mm. 2) The aluminum is pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum), the heating mode is resistance furnace heating, the furnace temperature is controlled at 760 ℃, and the temperature is kept for 20 min. 3) The carbon fiber is made into a spiral shape in advance, the diameter of the spiral is 3mm, and the pitch of the spiral is 6 mm. 4) The crucible adopts an 8# graphite crucible. 5) The copper pipe prefabricated part is placed in a mold cavity, and the spiral carbon fiber prefabricated part is fixed in the center of the mold and the copper pipe. Preheating to 300 ℃, preserving heat for 20 minutes, and then pouring the aluminum liquid with the temperature of 750 ℃ into a mold under the protection atmosphere of argon to obtain the composite material of copper-clad aluminum and spiral carbon fiber.
Example 2:
1) the copper pipe is made of pure copper (T1 red copper containing 99.7% of copper) and has the dimensions as follows: the outer diameter is 30mm, the wall thickness is 4mm, and the length is 150 mm. 2) The aluminum is pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum), the heating mode is resistance furnace heating, the furnace temperature is controlled at 790 ℃, and the temperature is kept for 25 min. 3) The carbon fiber is made into a spiral shape in advance, the diameter of the spiral is 8mm, and the pitch of the spiral is 8 mm. 4) The crucible adopts an 8# graphite crucible. 5) Placing the copper pipe prefabricated part in a mold cavity, fixing the spiral carbon fiber prefabricated part at the center positions of the mold and the copper pipe, preheating to 330 ℃, preserving heat for 20 minutes, and then pouring molten aluminum at 780 ℃ into the mold under the argon protective atmosphere to obtain the composite material of copper-clad aluminum and spiral carbon fiber.
Example 3:
1) the copper pipe is made of pure copper (T1 red copper containing 99.7% of copper) and has the dimensions: the outer diameter is 40mm, the wall thickness is 5mm, and the length is 180 mm. 2) The aluminum is pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum), the heating mode is resistance furnace heating, the furnace temperature is controlled at 800 ℃, and the temperature is kept for 30 min. 3) The carbon fiber is made into a spiral shape in advance, the diameter of the spiral is 12mm, and the pitch of the spiral is 15 mm. 4) The crucible adopts an 8# graphite crucible. 5) And (2) placing the copper pipe prefabricated part in a mold cavity, fixing the spiral carbon fiber prefabricated part at the center positions of the mold and the copper pipe, preheating to 360 ℃, preserving heat for 25 minutes, and then pouring molten aluminum at 790 ℃ into the mold under the argon protective atmosphere to obtain the composite material of copper-clad aluminum and spiral carbon fiber.
Example 4:
1) the copper pipe is made of pure copper (T1 red copper containing 99.7% of copper) and has the dimensions: the outer diameter is 50mm, the wall thickness is 6mm, and the length is 200 mm. 2) The aluminum is pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum), the heating mode is resistance furnace heating, the furnace temperature is controlled at 860 ℃, and the temperature is kept for 30 min. 3) The carbon fiber is made into a spiral shape in advance, the diameter of the spiral is 15mm, and the pitch of the spiral is 12 mm. 4) The crucible is an 8# graphite crucible. 5) Placing the copper pipe prefabricated part in a mold cavity, fixing the spiral carbon fiber prefabricated part at the center positions of the mold and the copper pipe, preheating to 400 ℃, preserving heat for 30 minutes, and then pouring molten aluminum at 850 ℃ into the mold under the argon protective atmosphere to obtain the composite material of copper-clad aluminum and spiral carbon fiber.
Example 5:
1) the aluminum is pure aluminum (No. 1 industrial pure aluminum containing 99.7% of aluminum), the heating mode is resistance furnace heating, the furnace temperature is controlled at 800 ℃, and the temperature is kept for 30 min. 2) The carbon fiber is made into a spiral shape in advance, the diameter of the spiral is 5mm, and the pitch of the spiral is 8 mm. 3) The crucible adopts an 8# graphite crucible. 4) Fixing the spiral carbon fiber prefabricated part at the center of a mold, preheating to 400 ℃, preserving heat for 30 minutes, and then pouring molten aluminum at 790 ℃ into the mold under the protection of argon gas to obtain the composite material of pure aluminum and spiral carbon fiber.
When casting, the mould can be placed straight or inclined at a certain angle; fig. 4 is a schematic diagram of the casting at an inclination of 15 °, in which one end of the mold after mold assembly is supported by using the cushion block 7 to realize inclination, and the inclination angle of the mold can be adjusted by adjusting the height and the supported position of the cushion block 7.
The structure of the composite material of copper clad aluminum and spiral carbon fiber prepared by the mold and the method is shown in fig. 5 and 6, and comprises an external copper layer 8, core aluminum which is cooled and solidified after being poured, and spiral carbon fiber with different pitches arranged in the core aluminum. The copper pipe can not be placed by using the mold, so that the composite material of pure aluminum and spiral carbon fiber can be prepared, or the composite material of other metals or other metal-clad metals and spiral carbon fiber can be prepared.
The mold and the method for preparing the spiral carbon fiber reinforced metal composite material provided by the embodiment of the application are described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, that a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (3)
1. The mold for preparing the spiral carbon fiber reinforced metal composite material is characterized by comprising a first mold and a second mold which can be closed, wherein a cavity can be formed in the first mold and the second mold after the first mold and the second mold are closed;
two ends of the die are respectively provided with a carbon fiber fixing hole groove for fixing the spiral carbon fiber;
the cavity is arranged horizontally; one end of the cavity is provided with an upward riser for pouring molten metal; the riser is in an integral form so as to avoid the problem of tightness matching when the non-integral riser is subjected to die assembly;
the spiral carbon fiber comprises a spiral section and long straight sections respectively arranged at two ends of the spiral section; the long straight section is fixed in the carbon fiber fixing hole groove;
the first die and the second die are both made of graphite;
the first die and the second die are clamped and fixed by a C-shaped clamp after being clamped;
the first die and the second die are correspondingly provided with a plurality of positioning holes, and the first die and the second die are fixed and positioned by adopting a bolt and nut group after die assembly;
the overall shape of the die is a cuboid;
the method for preparing the spiral carbon fiber reinforced metal composite material by adopting the mould comprises the following steps:
s1, preparing a metal pipe matched with the die cavity and spiral carbon fibers matched with the carbon fiber fixing hole grooves;
s2, fixing the metal pipe in the cavity through the closing of the first mold and the second mold, and fixing two ends of the spiral carbon fiber in the corresponding carbon fiber fixing hole grooves; applying a certain pretightening force to ensure that the spiral carbon fiber is positioned at the center of the mold;
s3, melting the metal to be poured into molten metal, and pouring the molten metal into the cavity of the preheated mold through a riser under the action of protective atmosphere; maintaining a certain pressure to ensure that the carbon fibers are impregnated with the aluminum liquid and the aluminum liquid is well combined;
s4, cooling and demoulding to obtain the spiral carbon fiber reinforced composite material;
drawing the prepared composite material into a composite wire by formulating a proper drawing process;
the metal pipe is made of copper, and the metal to be poured is aluminum;
the length of the metal pipe is smaller than that of the cavity, and the metal pipe is fixed in the cavity and is arranged in a non-protruding mode relative to a bottom port of the riser, so that the molten metal is prevented from being poured onto the outer wall of the metal pipe.
2. The mold for manufacturing a spiral carbon fiber reinforced metal composite material according to claim 1, wherein the spiral carbon fiber has a diameter of 3 to 25mm, and the pitch of the spiral section is 5 to 15 mm.
3. The mold for manufacturing a spiral carbon fiber reinforced metal composite material according to claim 1, wherein the process for manufacturing the spiral carbon fiber comprises: winding the original carbon fiber bundle on a metal wire in advance, winding the spiral section on the cylindrical rod body according to a set screw pitch, and extracting the cylindrical rod body to obtain spiral carbon fiber; the metal wire is made of the same material as the metal pipe or the molten metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110764228.8A CN113512689B (en) | 2021-07-06 | 2021-07-06 | Mold and method for preparing spiral carbon fiber reinforced metal composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110764228.8A CN113512689B (en) | 2021-07-06 | 2021-07-06 | Mold and method for preparing spiral carbon fiber reinforced metal composite material |
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