CN109202043A - A kind of preparation method of copper clad aluminum and coiled carbon fibers composite bar - Google Patents
A kind of preparation method of copper clad aluminum and coiled carbon fibers composite bar Download PDFInfo
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- CN109202043A CN109202043A CN201811092694.0A CN201811092694A CN109202043A CN 109202043 A CN109202043 A CN 109202043A CN 201811092694 A CN201811092694 A CN 201811092694A CN 109202043 A CN109202043 A CN 109202043A
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- copper
- carbon fibers
- coiled carbon
- copper pipe
- clad aluminum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
A kind of preparation method of copper clad aluminum and coiled carbon fibers composite bar, belongs to metal material field.It is characterized in that a prefabricated copper pipe and one or more coiled carbon fibers, coiled carbon fibers are put into copper pipe, molten aluminum is then poured into copper pipe, prepare the composite bar of copper clad aluminum and coiled carbon fibers.Present invention process process is simple, and technological parameter is stablized, and dimensional accuracy is high, high-efficient, and flexibility ratio is high, and subsequent drawing processing can not be carried out by solving the problems, such as that the low long carbon fiber straight with addition of copper-coated aluminium composite material tensile strength is had no progeny.And device structure is simple, it is easy to maintain.It is passed through the protection of the inert gases such as argon gas in production, effectively prevents the problem of oxidation of copper pipe and molten aluminum, preferably ensure that the combination between interface.
Description
Technical field
The invention belongs to metal material fields, particularly relate to the preparation side of a kind of copper clad aluminum and coiled carbon fibers composite bar
Method.
Background technique
Composite material is the new material being process by two kinds or more materials by certain technique.Due to its specific strength
Height, specific stiffness are big, light-weight, and some have the specific functions such as conductive, thermally conductive, and composite technology is paid much attention in the whole world
The exploitation and research of technology become one of key technology very important in Development of High-tech Industrial.
Copper-coated aluminium composite material is combined with the excellent physical property of copper, aluminium, so that layers of copper and aluminium core is existed using complex technique
It realizes that strong metallurgical combines on interface, not only has that the conduction of copper, thermal conductivity are high, contact resistance is low and specious etc. excellent
Point also has the advantages that the light weight of aluminium, price are low etc..Develop in recent years quickly, major product has copper-clad aluminum conductor, cuprum-cladding-aluminium bus
Row etc..It is widely used in the industrial circles such as power transmission, automobile, machine-building, petroleum, chemical industry, there is good application prospect.With
It is although very economical that copper pipe prepares composite conductor, but its tensile strength is low, is easy to produce out when cable bears drawing force
It splits, influences the transmission of electric current.Such as although copper clad aluminum composite conductor significantly reduces conductor weight, has saved cost,
Be since the tensile strength of aluminium is lower than copper, so the tensile strength of copper clad aluminum composite conductor is lower than copper conductor, in many occasions, by
It is inadequate in tensile strength, limit its popularization and application.
Carbon fiber has high specific strength, and high ratio modulus, resist chemical, radiation hardness, endurance, creep resistant, is led high temperature resistant
The excellent properties such as electric, heat transfer and thermal expansion coefficient are small, are added to continuous long carbon fiber as enhancing in copper-coated aluminium composite material,
The good conductive and signal transmission performance of copper clad aluminum composite conductor can not only be retained, while it is anti-also to solve copper aluminum composite material
The disadvantage that tensile strength is low, specific modulus is low improves the comprehensive performance of copper clad aluminum composite conductor significantly.But straight length
The elongation after fracture of carbon fiber close to zero, only a few percent, in most cases by it is original it is straight in the form of be added Metal Substrate in make
With, almost can not subsequent drawing processing, and it is disconnected before without certain elongation early warning, influence the popularization and application of its engineering.
Currently without relevant report prepared by copper clad aluminum and coiled carbon fibers composite material, (copper clad aluminum is compound for pertinent literature
Material continuous casting fills core technique and casts, and 2005, (4): 394~397) report, with fine copper (the T1 red copper containing 99.7% bronze medal) and fine aluminium
(No. 1 commercial-purity aluminium containing 99.7% aluminium) is raw material, and fill core technique with continuous casting: the temperature of core metal aluminium is 780 DEG C, outer layer gold
The temperature for belonging to copper is 1260~1320 DEG C, and pulling rate is 13~24mm/min, prepares that core diameters are 24mm, outer layer thickness is
The copper clad aluminum bimetal composite rod of 8mm.But since the tensile strength of aluminium is lower than copper, lead to the stretch-proof of copper-coated aluminium composite material
Intensity is lower than fine copper, in significantly overhead transmission line, cannot carry out remote transmission, influences its a wide range of use.
Summary of the invention
Key technical problem to be solved by this invention is that high-intensitive, high-modulus carbon fiber is added, and solves copper clad aluminum
The low problem of composite material tensile strength, and carbon fiber is added in copper clad aluminum using spiral way, instead of into copper clad aluminum
Straight long carbon fiber elongation after fracture is added close to zero, the problem of subsequent drawing is processed can not be carried out.
To solve the above problems, the invention proposes the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar,
It is characterized by:
(1) copper pipe is first prepared, material is fine copper (the T1 red copper containing 99.7% bronze medal), size are as follows: outer diameter 20~
80mm, 2~10mm of wall thickness, 50~800mm of length.
(2) original carbon fiber silk is prepared into spiral shell by series of processes such as twisting, plying, starching, annealing in hydrogen atmosphere solidified formings
Carbon fiber is revolved, spiral coil diameter is 15~75mm, and screw pitch is 3~18mm.
(3) aluminium (No. 1 commercial-purity aluminium containing 99.7% aluminium) is put into crucible (8# graphite crucible), in juxtaposition resistance furnace, with
Furnace temperature is risen to 750~860 DEG C by 20~50 DEG C/min of heating rate, keeps the temperature 15~30 minutes.
(4) the good coiled carbon fibers of pre-production are put into copper pipe, then by 720~810 DEG C of molten aluminum, in argon gas etc.
Under the protective atmosphere of inert gas, it is poured into the copper pipe of 200~350 DEG C of preheating in advance, obtains copper clad aluminum and coiled carbon fibers
Composite bar.
The present invention has the advantages that
(1) process flow is simple, and technological parameter is stablized, and molten aluminum is melted using conventional resistance furnace, in argon atmosphere
Under, the short time, lower pressure in wider temperature range, prepares the composite bar of copper clad aluminum and coiled carbon fibers.
(2) dimensional accuracy is high, prefabricated spiral carbon fiber and prefabricated copper pipe and etc. individually carry out, and accurately control prefabrication
Size, to guarantee the dimensional accuracy of final finished.
(3) high-efficient, easily efficiently realize the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar.
(4) solve that copper-coated aluminium composite material tensile strength is low, and be added straight long carbon fiber have no progeny can not carry out it is subsequent
The problem of drawing is processed.
(5) flexibility ratio is high, and whole preparation flow is divided into several sections and is carried out respectively, and can be according to each section of process of the condition of production
It individually carries out, and device structure is simple, it is easy to maintain.
(6) it is passed through the protection of the inert gases such as argon gas in production, effectively prevents the problem of oxidation of copper pipe and molten aluminum, more
The good combination that ensure that between interface.
(7) the starching curing agent of carbon fiber uses epoxy resin, and the dosage of curing agent is in the premise for guaranteeing carbon fiber forming
Under it is few as far as possible, general control in carbon fibre material mass fraction 3~8%.And at by 1100 DEG C of annealing in hydrogen atmosphere solidified formings
After reason, epoxy resin will be decomposed and be volatilized, and release gas, in order to take away the gas of releasing in time, open the gas of stove
The air pressure adjustment of nitrogen to 0.05~0.1MPa is kept the circulation for burning furnace gas by body switch.
Detailed description of the invention
Fig. 1 is preparation method schematic diagram of the invention.
Fig. 2 is copper clad aluminum prepared by the present invention and coiled carbon fibers (single) composite bar schematic diagram.
Fig. 3 is copper clad aluminum prepared by the present invention and coiled carbon fibers (more) composite bar schematic diagram.
It is marked in figure and fills core aluminium, 5 coiled carbon fibers cores (single), 6 layers of copper for molten aluminum, 2 coiled carbon fibers, 3 copper pipes, 4
One, 7, core aluminium, 8 coiled carbon fibers cores (more), 9 layers of copper two are filled.
Specific embodiment
Embodiment one:
1) copper pipe material is fine copper (the T1 red copper containing 99.7% bronze medal), size are as follows: outer diameter 25mm, wall thickness 3mm, length
60mm.2) aluminium uses fine aluminium (No. 1 commercial-purity aluminium containing 99.7% aluminium), and heating method uses resistance stove heating, and Control for Kiln Temperature exists
760 DEG C, keep the temperature 15min.3) carbon fiber pre-production is spiral, and circle diameter is 15mm, screw pitch 4mm.4) crucible uses 8# stone
Black crucible.5) the good coiled carbon fibers of pre-production are put into copper pipe, then by 740 DEG C of molten aluminum, in argon atmosphere
Under, it is poured into the copper pipe of 200 DEG C of preheating in advance, obtains the composite bar of copper clad aluminum and coiled carbon fibers.
Embodiment two:
1) copper pipe material is fine copper (the T1 red copper containing 99.7% bronze medal), size are as follows: outer diameter 40mm, wall thickness 4mm, length
100mm.2) aluminium uses fine aluminium (No. 1 commercial-purity aluminium containing 99.7% aluminium), and heating method uses resistance stove heating, and Control for Kiln Temperature exists
800 DEG C, keep the temperature 20min.3) carbon fiber pre-production is spiral, and circle diameter is 25mm, screw pitch 6mm.4) crucible uses 8# stone
Black crucible.5) the good coiled carbon fibers of pre-production are put into copper pipe, then by 780 DEG C of molten aluminum, in argon atmosphere
Under, it is poured into the copper pipe of 250 DEG C of preheating in advance, obtains the composite bar of copper clad aluminum and coiled carbon fibers.
Embodiment three:
1) copper pipe material is fine copper (the T1 red copper containing 99.7% bronze medal), size are as follows: outer diameter 55mm, wall thickness 3mm, length
115mm.2) aluminium uses fine aluminium (No. 1 commercial-purity aluminium containing 99.7% aluminium), and heating method uses resistance stove heating, and Control for Kiln Temperature exists
810 DEG C, keep the temperature 20min.3) carbon fiber pre-production is spiral, and circle diameter is 35mm, screw pitch 10mm.4) crucible uses 8# stone
Black crucible.5) the good coiled carbon fibers of pre-production are put into copper pipe, then by 780 DEG C of molten aluminum, in argon atmosphere
Under, it is poured into the copper pipe of 260 DEG C of preheating in advance, obtains the composite bar of copper clad aluminum and coiled carbon fibers.
Embodiment four:
1) copper pipe material is fine copper (the T1 red copper containing 99.7% bronze medal), size are as follows: outer diameter 65mm, wall thickness 5mm, length
140mm.2) aluminium uses fine aluminium (No. 1 commercial-purity aluminium containing 99.7% aluminium), and heating method uses resistance stove heating, and Control for Kiln Temperature exists
840 DEG C, keep the temperature 25min.3) carbon fiber pre-production is spiral, and circle diameter is 45mm, screw pitch 12mm.4) crucible uses 8# stone
Black crucible.5) the good coiled carbon fibers of pre-production are put into copper pipe, then by 800 DEG C of molten aluminum, in argon atmosphere
Under, it is poured into the copper pipe of 280 DEG C of preheating in advance, obtains the composite bar of copper clad aluminum and coiled carbon fibers.
Claims (7)
1. the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar, which is characterized in that a prefabricated copper pipe and one
Or more coiled carbon fibers, coiled carbon fibers are put into copper pipe, molten aluminum is then poured into copper pipe, prepare copper clad aluminum and spiral shell
Revolve the composite bar of carbon fiber.
2. a prefabricated copper pipe according to claim 1, which is characterized in that a piece copper pipe of preparation, material is fine copper, size
Are as follows: 20~80mm of outer diameter, 2~10mm of wall thickness, 50~800mm of length, the fine copper are the T1 red copper containing 99.7% bronze medal.
3. prefabricated spiral carbon fiber according to claim 1, which is characterized in that by original carbon fiber silk by twisting, plying,
Starching, annealing in hydrogen atmosphere solidified forming process are prepared into coiled carbon fibers, and spiral coil diameter is 15~75mm, and screw pitch is 3~18mm.
4. the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar according to claim 1, which is characterized in that will
Fine aluminium is put into crucible, is placed in resistance furnace, and furnace temperature is risen to 750~860 DEG C with 20~50 DEG C/min of heating rate, is protected
Temperature 15~30 minutes；The fine aluminium is No. 1 commercial-purity aluminium containing 99.7% aluminium.
5. the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar according to claim 1, which is characterized in that will
The good coiled carbon fibers of pre-production are put into copper pipe, then pour into molten aluminum into copper pipe, and the pouring temperature of molten aluminum is 720~
810℃。
6. the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar according to claim 1, which is characterized in that
When being poured molten aluminum in copper pipe, copper pipe need to be preheating to 200~350 DEG C in advance.
7. the preparation method of a kind of copper clad aluminum and coiled carbon fibers composite bar according to claim 1, which is characterized in that pour
It is aoxidized in order to prevent when note, needs to be passed through argon gas and protected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811092694.0A CN109202043A (en) | 2018-09-18 | 2018-09-18 | A kind of preparation method of copper clad aluminum and coiled carbon fibers composite bar |
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| CN201811092694.0A CN109202043A (en) | 2018-09-18 | 2018-09-18 | A kind of preparation method of copper clad aluminum and coiled carbon fibers composite bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512689A (en) * | 2021-07-06 | 2021-10-19 | 北京科技大学 | Mold and method for preparing spiral carbon fiber reinforced metal composite material |
Citations (6)
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| US3970136A (en) * | 1971-03-05 | 1976-07-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method of manufacturing composite materials |
| JPH01230734A (en) * | 1988-03-10 | 1989-09-14 | Mazda Motor Corp | Manufacture of fibrous composite member |
| CN101011790A (en) * | 2007-01-22 | 2007-08-08 | 王其昌 | Manufacturing method for copper-aluminium recombination line |
| CN101722297A (en) * | 2008-11-03 | 2010-06-09 | 和硕联合科技股份有限公司 | Method for forming structure |
| CN105149531A (en) * | 2015-09-29 | 2015-12-16 | 北京科技大学 | Device and technical method for preparing metal-wrapped long carbon fiber wrapping material |
| CN107815620A (en) * | 2017-10-27 | 2018-03-20 | 北京科技大学 | One kind adds the deformable composite wire of spiral long fiber reinforcement Metal Substrate |
-
2018
- 2018-09-18 CN CN201811092694.0A patent/CN109202043A/en active Pending
Patent Citations (6)
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| US3970136A (en) * | 1971-03-05 | 1976-07-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method of manufacturing composite materials |
| JPH01230734A (en) * | 1988-03-10 | 1989-09-14 | Mazda Motor Corp | Manufacture of fibrous composite member |
| CN101011790A (en) * | 2007-01-22 | 2007-08-08 | 王其昌 | Manufacturing method for copper-aluminium recombination line |
| CN101722297A (en) * | 2008-11-03 | 2010-06-09 | 和硕联合科技股份有限公司 | Method for forming structure |
| CN105149531A (en) * | 2015-09-29 | 2015-12-16 | 北京科技大学 | Device and technical method for preparing metal-wrapped long carbon fiber wrapping material |
| CN107815620A (en) * | 2017-10-27 | 2018-03-20 | 北京科技大学 | One kind adds the deformable composite wire of spiral long fiber reinforcement Metal Substrate |
Non-Patent Citations (1)
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| 初娣等: "Cu/Al/Cf复合材料票垂直充芯连铸温度场数值模拟", 《铸造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512689A (en) * | 2021-07-06 | 2021-10-19 | 北京科技大学 | Mold and method for preparing spiral carbon fiber reinforced metal composite material |
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