CN108857069A - A kind of method of carbon fibre composite and copper alloy welding - Google Patents
A kind of method of carbon fibre composite and copper alloy welding Download PDFInfo
- Publication number
- CN108857069A CN108857069A CN201810918905.5A CN201810918905A CN108857069A CN 108857069 A CN108857069 A CN 108857069A CN 201810918905 A CN201810918905 A CN 201810918905A CN 108857069 A CN108857069 A CN 108857069A
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- CN
- China
- Prior art keywords
- carbon fibre
- fibre composite
- welding
- copper alloy
- copper
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
Abstract
The invention belongs to technical field of dissimilar material connection, the method for more particularly relating to a kind of carbon fibre composite and copper alloy welding, the specific steps are：By carbon fibre composite copper coating, then carbon fibre composite, copper alloy successively pressurize and are assembled to form assembly parts, laser-arc hybrid welding in industry is used to assembly parts, it is stirred simultaneously using tungsten bar, it carries out keeping the temperature cooling heat treatment after welding, completes the welding of carbon fibre composite and copper alloy plate.The laser-arc hybrid welding in industry method that the present invention passes through copper facing and tungsten bar is used to stir, realizes metallurgy connection, and carbon can effectively be avoided to contact with the direct of copper, raising strength of joint.
Description
Technical field
The invention belongs to technical field of dissimilar material connection, a kind of carbon fibre composite and copper alloy are more particularly related to
The method of welding.
Background technique
Due to copper and carbon fibre reinforced composite (Carbon Fiber ReinforcedPolymer/Plastic, letter
Be written as CFRP) thermal coefficient be closer to, so being not likely to produce larger thermal stress when using and being brazed.The company of copper and CFRP
Connect mainly using brazing mode, earliest solder selects Cu-Pb (mass fraction 50%), can make after soldering is cooling copper,
Composite material, solder form linkage interface, but the intensity of the linkage interface is lower；With the continuous development of industrial technology, it finds
The chemical activity of transition elements Zr, Ti etc. is stronger, can react with C under the conditions of liquid, so adding in conventional solder
A certain amount of active element, so that it may make composite material surface get wet profit, to reduce the difficulty connecting with metal, this method is usual
Implement under high-purity inert gas or vacuum drying oven environment.Ag-Cu-Ti is common active solder, is brazed usually in vacuum item
It is carried out under part, the method solder wetting process is more complex, and strength of joint is lower, not high using temperature.
Summary of the invention
The purpose of the present invention is overcome in copper in the prior art and carbon fibre reinforced composite welding process to need vacuum
Soldering, the more complex defect of solder wetting process.The invention proposes a kind of carbon fibre composite plate and copper alloy plates
The method of welding plates the joint face that carbon fibre composite plate is contacted with copper alloy plate using one-side electroplating technique
Copper treatment after copper facing, the copper plate on carbon fibre composite plate is bonded with copper alloy plate and pressurizes to obtain assembly parts,
Laser-arc hybrid welding in industry is carried out to assembly parts, uses tungsten bar to be deep into liquid state molten pool during laser-arc hybrid welding in industry
It is stirred, completes the welding of carbon fibre composite plate and copper alloy plate.By stirring to liquid metal solidification process
In tissue refined, Broken Crystal, while being conducive to the inhibition of the stomata in liquid metal and crackle.The method of the present invention with
Method for welding is compared, and solder is not needed, and does not also need vacuum brazing, and process is relatively easy, and is deep into molten bath using tungsten bar
It is stirred, by the refinement of advantageous liquid state of molten pool tissue, reduces connector defect, improve strength of joint and connector service temperature.
Preferably, decontamination processing is carried out to copper alloy plate and carbon fibre composite plate before carrying out copper plating treatment；
The decontamination processing is that it is molten to place into acetone to polishing after copper alloy plate and the polishing of carbon fibre composite plate using sand paper
It is cleaned by ultrasonic 10~15min, the sundries such as removal surface and oil contaminant, it is ensured that surface is clean in liquid；The specification of the sand paper be 400 mesh~
1000 mesh；Acetone concentration >=99.8% in the acetone soln.
Preferably, the carbon fibre composite plate is enhancing phenolic epoxy composite material T300/648, and the copper closes
The trade mark of golden plate material is H70.
It preferably, is cathode by anode, carbon fibre composite plate of copper sheet material in the copper plating treatment, to contain
The solution of 60~90g/L cupric sulfate pentahydrate, 180~220g/L sulfuric acid and 40~80mg/L chloride ion is as electroplate liquid.
Preferably, the pH value of the electroplate liquid is 4~6, and temperature is 20~40 DEG C, and current density is 0.8~1.2A/dm2.
Preferably, for the thickness of the copper plate in 50~100 μ ms, thickness is uniform.
Preferably, the laser power is 300~1000W, and arc current is 50~100A, electric arc and laser spacing 1-
2mm, speed of welding are 15~25mm/s.
Preferably, the tungsten bar diameter 0.5mm, mixing speed 10r/s, tungsten bar are deep into liquid state molten pool and are stirred,
Tungsten bar does not react with the element in liquid state molten pool.
The present invention is first in carbon fibre composite plate surface copper facing, then the Laser-Arc Hybrid Welding stirred by tungsten bar
It connects and welds copper alloy plate and copper-plated carbon fibre composite plate, realize metallurgy connection, can effectively improve and connect
Head intensity, can be used for the manufacture of auto parts and components.
The present invention has the advantages that：
(1) it is not necessarily to solder in welding process of the present invention, does not also need vacuum brazing, process is relatively easy；
(2) carbon fibre composite plate surface copper facing first of the invention, then uses laser-arc hybrid welding in industry by copper
Sheet alloy and copper-plated carbon fibre composite plate weld, and improve strength of joint；
(3) present invention is stirred with tungsten bar by control thickness of coated copper layer and realizes that the thickness of butt joint conversion zone mutually divides with reaction
The control of cloth, the average shear strength of weldment connector at room temperature may be up to 80MPa；
(4) during the present invention is stirred by tungsten bar to liquid metal solidification during laser-arc hybrid welding in industry
Tissue is refined, Broken Crystal, while being conducive to the inhibition of the stomata in liquid metal and crackle.
Detailed description of the invention
Fig. 1 is electroplanting device schematic diagram in the present invention.
Fig. 2 is laser-arc hybrid welding in industry schematic diagram in the present invention, and wherein A is the carbon fibre composite containing copper plate
Plate, B are copper alloy plate, and C is tungsten bar, and D is laser-electric arc composite heat source, the motor that E is connected by tungsten bar；Wherein carbon fiber
The copper plate of dimension composite board is bonded to each other with copper alloy plate.
Specific embodiment
The present embodiment to dimensions be 100*50*2mm enhancing phenolic epoxy composite material T300/648 plate and
H70 copper alloy plate.
The present embodiment includes the following steps：
S1 is machined H70 copper alloy and enhancing phenolic epoxy composite material, obtains plate to be welded；
S2 will be polished using 400 mesh sand paper after H70 copper alloy plate and enhancing phenolic epoxy composite material plate polishing,
Place into 10~15min of ultrasonic cleaning in acetone soln, the sundries such as removal surface and oil contaminant, it is ensured that surface is clean；
Enhancing phenolic epoxy composite material plate is put into electroplating device, the copper plating treatment in 5L electroplate liquid, copper facing by S3
For the thickness control of layer in 50~100 μ ms, thickness is uniform；
The copper plate enhanced on phenolic epoxy composite material plate is bonded with H70 copper alloy plate and pressurizes to obtain by S4
Assembly parts；
S5, as shown in Fig. 2, to assembly parts carry out tungsten bar stirring laser-arc hybrid welding in industry, laser power be 300~
1000W, arc current are 50~100A, electric arc and laser spacing 1-2mm, and speed of welding is 15~25mm/s.Tungsten bar diameter
0.5mm, mixing speed 10r/s.
As shown in Figure 1, in the copper plating treatment using copper sheet material as anode, enhancing phenolic epoxy composite material plate be yin
Pole enhances non-plated copper face on phenolic epoxy composite material plate and coats protective organic, guarantees only multiple in enhancing epoxy novolac
The upper copper facing of condensation material plate one side, can wash protective organic with acetone soln after copper facing；Copper is former in anode copper plate
Son, which loses, electronically forms Cu2+, Cu2+Electronics is obtained in cathode, is reduced into Cu, in enhancing phenolic epoxy composite material plate surface
Form copper plate.
In step S5, tungsten bar mixing speed, laser power and arc current influence weldment connector being averaged at room temperature and cut
Shearing stress, as shown in table 1 below.
Embodiment
1 thickness of coated copper layer of table, tungsten bar stirring and strength of joint relationship
The embodiment of the present invention realizes thickness and the reaction of butt joint conversion zone by control thickness of coated copper layer and tungsten bar stirring
The defects of mutually control of distribution, and then the microscopic structure and performance of control joint, the connector of acquisition is completely fine and close, flawless；Weldering
Heat treatment after connecing removes the residual stress of welding point, improves the mechanical property of connector after tested.
As can be seen that strength of joint is lower, only 20MPa, and has tungsten bar to stir in the case where the stirring of no tungsten bar in upper table
After mixing, intensity is obviously increased, and ingredient embodies tungsten bar and stirs the effect in process of setting.
Claims (9)
1. a kind of method of carbon fibre composite plate and copper alloy plate welding, it is characterised in that include the following steps：It is right
The joint face that carbon fibre composite plate is contacted with copper alloy plate carries out copper plating treatment using one-side electroplating technique, after copper facing
Copper plate on carbon fibre composite plate is bonded with copper alloy plate and pressurizes to obtain assembly parts, assembly parts are swashed
Optical-electronic arc composite welding, laser-arc hybrid welding in industry use tungsten bar to be deep into liquid state molten pool and are stirred in the process.
2. the method for carbon fibre composite plate according to claim 1 and copper alloy plate welding, it is characterised in that：
Decontamination processing is carried out to copper alloy plate and carbon fibre composite plate before carrying out copper plating treatment；The decontamination processing is to adopt
With sand paper to being polished after copper alloy plate and the polishing of carbon fibre composite plate, place into acetone soln ultrasonic cleaning 10~
15min；The specification of the sand paper is 400 mesh~1000 mesh；Acetone concentration >=99.8% in the acetone soln.
3. the method for carbon fibre composite plate according to claim 1 and copper alloy plate welding, it is characterised in that：
The carbon fibre composite plate is enhancing phenolic epoxy composite material T300/648, and the trade mark of the copper alloy plate is
H70。
4. the method for carbon fibre composite plate according to claim 1 and copper alloy plate welding, it is characterised in that：
It by anode, carbon fibre composite plate of copper alloy plate is cathode in the copper plating treatment, to contain 60~90g/L five
The solution of brochanite, 180~220g/L sulfuric acid and 40~80mg/L chloride ion is as electroplate liquid.
5. the method for carbon fibre composite plate according to claim 4 and copper alloy plate welding, it is characterised in that：
The pH value of the electroplate liquid is 4~6, and temperature is 20~40 DEG C, and current density is 0.8~1.2A/dm2。
6. the method for carbon fibre composite plate according to claim 1 and copper alloy plate welding, it is characterised in that：
The thickness of the copper plate is in 50~100 μ ms.
7. the method for carbon fibre composite plate according to claim 1 and copper alloy plate welding, it is characterised in that：
The laser power of the laser-arc hybrid welding in industry is 300~1000W, and arc current is 50~100A, electric arc and laser spacing
1-2mm, speed of welding are 15~25mm/s.
8. the method for carbon fibre composite plate according to claim 7 and copper alloy plate welding, it is characterised in that：
The tungsten bar diameter 0.5mm, tungsten bar mixing speed 10r/s, tungsten bar are deep into liquid state molten pool and are stirred, tungsten bar not with liquid
Element in molten bath reacts.
9. the method for carbon fibre composite plate according to claim 8 and copper alloy plate welding, it is characterised in that：
The copper plate with a thickness of 60 μm, the laser power of laser-arc hybrid welding in industry is 500W, arc current 80A, welding speed
Degree is 20mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810918905.5A CN108857069A (en) | 2018-08-14 | 2018-08-14 | A kind of method of carbon fibre composite and copper alloy welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810918905.5A CN108857069A (en) | 2018-08-14 | 2018-08-14 | A kind of method of carbon fibre composite and copper alloy welding |
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| CN108857069A true CN108857069A (en) | 2018-11-23 |
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| CN201810918905.5A Pending CN108857069A (en) | 2018-08-14 | 2018-08-14 | A kind of method of carbon fibre composite and copper alloy welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183565A (en) * | 2021-06-03 | 2021-07-30 | 河南工业大学 | Preparation method of carbon fiber reinforced sliding current collecting material for high-speed train |
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| CN102936706A (en) * | 2012-11-13 | 2013-02-20 | 北京理工大学 | Carbon fiber cloth-titanium alloy composite material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183565A (en) * | 2021-06-03 | 2021-07-30 | 河南工业大学 | Preparation method of carbon fiber reinforced sliding current collecting material for high-speed train |
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