CN106893955B - A kind of electromagnetic forming device and the method for preparing fiber-reinforced metal matrix composite using the device - Google Patents
A kind of electromagnetic forming device and the method for preparing fiber-reinforced metal matrix composite using the device Download PDFInfo
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- CN106893955B CN106893955B CN201710167125.7A CN201710167125A CN106893955B CN 106893955 B CN106893955 B CN 106893955B CN 201710167125 A CN201710167125 A CN 201710167125A CN 106893955 B CN106893955 B CN 106893955B
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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
Abstract
The present invention relates to a kind of electromagnetic forming device and the method for preparing fiber-reinforced metal matrix composite using the device, the electromagnetic forming device includes lower platen (7), coil charge and discharge device, coil fixing device, crucible (10), crucible positioning device, cavity plate (13) and cavity plate clamp device；The crucible positioning device includes the crucible fixed plate (5) for support crucible (10), crucible fixed plate (5) is equipped with inner hole, it is mutually fitted on the outside of inner port edge and crucible (10), crucible positioning device is used to control the mounting height of crucible, makes the spacing 1-3mm between crucible (10) bottom and discharge coil (9)；The cavity plate (13) is semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible (10)；The cavity plate clamp device applies pressure for fixing cavity plate (13), and to cavity plate (13), fastens cavity plate (13) and crucible (10) closely.
Description
Technical field
The invention belongs to metal-base composites material molding technology fields, and in particular to a kind of electromagnetic forming device and benefit
The method for preparing fiber-reinforced metal matrix composite with the device.
Background technique
Fiber-reinforced metal matrix composite is in addition to having the characteristics that high specific strength, high ratio modulus and low thermal coefficient of expansion
Outside, also have and be resistant to higher temperature, anti-flaming, transverse strength and rigidity is high, nonhygroscopic, high thermal conductivity and conductivity, radiation resistance
Well, not the advantages that not releasing gas when in use, it is shown that the incomparable feature of polymer matrix composites has obtained grinding both at home and abroad
The great attention for the person of studying carefully.
Metal currently used for preparing fiber-reinforced metal matrix composite has aluminium, copper, titanium, nickel etc..Use enhancing
Fiber has boron fibre, silicon carbide fibre, carbon fiber and wire fibers etc., the preparation method of fiber-reinforced metal matrix composite
Mainly there is legal, vacuum pressure infiltration method of squeeze casting method, diffusion junctions etc..The preform of fiber is put into gold by extrusion casint
Belong in mould, appropriate to heat, the parent metal of fusing is immersed in pressurization, in its solidification of ordering that adds high pressure, to obtain complex-shaped
Composite material, the method period is short, high production efficiency.If but pressure is excessive in the method, easy damaged fiber；Pressure is too small,
Then liquid metal is not easy to be infiltrated up in fiber completely.And if the selection of temperature condition is inappropriate, the parent metal of fusing can be with
Fiber generates serious interfacial reaction, damages fiber.The legal fiber filament using after metal foil and surface treated of diffusion junctions or
By certain requirement stacking, mutually pressure is routed to certain thickness to the laminate of composite silk or the unidirectional fibre arrangement prepared
Composite material prefabricated component is prepared, under inert gas protection or under high vacuum condition, reinforcement fiber is made by high temperature, high pressure
With matrix alloy connecting shaping, the method prepares composite material equipment cost height and complex process, and practical application is by very much
Limitation.Vacuum pressure infiltration method is that fiber preform is put into mold, by device vacuum sealing, by prefabricated component and Metal Substrate
Body is heated separately to apply pressure by inert gas after required temperature and heat preservation, and liquid metal is pressed into carbon fiber preform
In.The composite material volume size that the method equipment requirement is high, prepares is limited by vacuum equipment size again.
Existing fiber-reinforced metal matrix composite manufacturing process there are interfacial reactions not easy to control, fibre damage or system
The disadvantages of standby at high cost, equipment and complex process.
Summary of the invention
The technical problem to be solved by the present invention is to aiming at the above shortcomings existing in the prior art, provide a kind of electromagnetism at
The method that shape dress sets and prepares fiber-reinforced metal matrix composite using the device, device is simple, when being shaped using the device
Between it is extremely short (up to 10-5Second grade), solve the problems, such as that pressure sintering needs long-time pressure maintaining, production efficiency not high, additionally, due to metal
Liquid and fibrous material time of contact are short, alleviate the interfacial reaction problem present in casting die, and this method only needs electromagnetism
It is low that former and heating furnace, technique and equipment cost compare vacuum pressure infiltration method.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of electromagnetic forming device is provided, fiber-reinforced metal matrix composite, the electromagnetic forming device are used to prepare
It is fastened including lower platen 7, coil charge and discharge device, coil fixing device, crucible 10, crucible positioning device, cavity plate 13 and cavity plate
Device；
The coil charge and discharge device includes discharge coil 9；
The crucible positioning device includes the crucible fixed plate 5 for support crucible 10, and crucible fixed plate 5 is equipped with interior
Hole, inner port edge and the outside of crucible 10 are mutually fitted, and crucible positioning device is used to control the mounting height of crucible, make 10 bottom of crucible with
Spacing between discharge coil 9 is 1-3mm；
The cavity plate 13 is semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible 10；
The cavity plate clamp device applies pressure for fixing cavity plate 13, and to cavity plate 13, keeps cavity plate 13 and crucible 10 tight
Close fastening.
According to the above scheme, the lower platen 7 is equipped with cylinder shape groove；
The coil charge and discharge device further includes and the concatenated capacitor 18 of discharge coil 9 and the confession in parallel with capacitor 18
Power supply, wherein power supply is connected with charging control switch 19, and discharge coil 9 is connected with discharge control switch 17；
The coil fixing device includes concentric coil rack 8 and coil base 6 with cylinder shape groove, the electric discharge
Coil 9 is embedded in and is fixed in the groove of coil rack 8, and coil rack 8 is embedded in and is fixed in the groove of coil base 6, line
Circle pedestal 6 is embedded in and is fixed in the circular groove of lower platen 7.
According to the above scheme, the crucible positioning device further includes being fixed on lower platen 7, along 9 central axis of discharge coil
The two root posts 21 being symmetrically installed, crucible fixed plate 5 are connected by screw connection manner with 21 upper end of column, and blending bolt 14 adjusts earthenware
5 mounting height of crucible fixed plate；
The cavity plate clamp device includes top board 3, and is fixed on lower platen 7, along 9 central axis pair of discharge coil
Claim two guide posts 4 of installation, top board 3 is fixed on 4 upper end of guide post by bolt 1 and nut 2, and the cavity plate 13 is fixed on pressure
3 lower section of plate, guide post 4 and column 21 are separately mounted to 7 four side of lower platen.
According to the above scheme, the cavity plate clamp device includes top board 3 and two connecting columns 22, and the cavity plate 13 is fixed on
3 lower section of top board, top board 3 and crucible fixed plate 5 are mounted on connecting column 22 by screw connection manner respectively；
The cavity plate clamp device further includes the die shank 16 fixed with top board 3；
The crucible positioning device further includes the cushion block 15 of 2 tubuloses, and 15 internal diameter of cushion block is greater than 22 outer diameter of connecting column, connection
22 bottom end of column is nested in cushion block 15.
The present invention also provides the methods for preparing fiber-reinforced metal matrix composite using above-mentioned apparatus, and its step are as follows:
1) solid metallic or alloy are placed in crucible 10, and crucible 10 are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to as after molten metal, crucible 10 is placed in the inner hole in crucible fixed plate 5, is determined with crucible
The mounting height of position device adjustment crucible 10, and along the flaky fibrous material for placing covering crucible surface on crucible 10, then
By under cavity plate 13 along face crucible 10 edge, carry out flanging along to flaky fibrous material on 13 lower edge of cavity plate and crucible 10, and
It is fixed with cavity plate clamp device；
2) it is charged with power supply to capacitor 18, after the voltage of capacitor 18 reaches forming voltage, disconnection is filled
Electric control switch 19 is closed discharge control switch 17, and capacitor 18 discharges to discharge coil 9, and molten metal is generated in coil discharge
Electromagnetic force under move upwards at a high speed, with flaky fibrous material high-speed impact and adhesion, obtain fibre reinforced metal-based multiple
Condensation material.
Preferably, the forming voltage is 500-640V.
According to the above scheme, the step 1) solid metallic or alloy are aluminium, magnesium, copper, titanium, almag, alusil alloy, aluminium
One of copper alloy；Step 1) the flaky fibrous material is carbon fiber or glass fibre.
One of which is as follows using the method and step that above-mentioned apparatus prepares fiber-reinforced metal matrix composite:
1) solid metallic or alloy are placed in crucible 10, and crucible 10 are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to crucible 10 to be placed in the inner hole in crucible fixed plate 5, with bolt 14 after molten metal
5 mounting height of crucible fixed plate is adjusted, then along the flaky fibrous material for placing covering crucible surface on crucible 10, then will
Under cavity plate 13 along face crucible 10 edge, carry out flanging along to flaky fibrous material on 13 lower edge of cavity plate and crucible 10, be used in combination
Top board 3 is fixed on 4 upper end of guide post by bolt 1 and nut 2；
2) it is charged with power supply to capacitor 18, after the voltage of capacitor 18 reaches forming voltage, disconnection is filled
Electric control switch 19 is closed discharge control switch 17, and capacitor 18 discharges to discharge coil 9, and molten metal is generated in coil discharge
Electromagnetic force under move upwards at a high speed, with flaky fibrous material high-speed impact and adhesion, obtain fibre reinforced metal-based multiple
Condensation material.
Another is as follows using the method and step that above-mentioned apparatus prepares fiber-reinforced metal matrix composite:
1) solid metallic or alloy are placed in crucible 10, and crucible 10 are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to crucible 10 to be placed in the inner hole in crucible fixed plate 5, crucible is consolidated after molten metal
Fixed board 5 is fixed on connecting column 22, and along the flaky fibrous material for placing covering crucible surface on crucible 10, then by cavity plate
Under 13 along face crucible 10 edge, carry out flanging along to flaky fibrous material on 13 lower edge of cavity plate and crucible 10, then will be upper
Pressing plate 3 is fixed on two 22 tops of connecting column, then nests into 22 bottom end of connecting column in cushion block 15, then with press machine pair with it is upper
The fixed die shank 16 of pressing plate 3 applies downward pressure；
2) it is charged with power supply to capacitor 18, after the voltage of capacitor 18 reaches forming voltage, disconnection is filled
Electric control switch 19 is closed discharge control switch 17, and capacitor 18 discharges to discharge coil 9, and molten metal is generated in coil discharge
Electromagnetic force under move upwards at a high speed, with flaky fibrous material high-speed impact and adhesion, obtain fibre reinforced metal-based multiple
Condensation material.
The present invention also provides the fiber-reinforced metal matrix composite being prepared according to the above method, the fiber reinforcement
Metal-base composites is with a thickness of 0.5-2mm.
The beneficial effects of the present invention are: 1, the present invention using discharge coil instead of punch-pin shaped, and efficiently solves tradition
Punch-die class fit problem, punch-die wear problem in press forming method, and due to being not required to power transmission medium, machine is not present
Tool contact, process will not be stained molten metal；2, compared with existing Carbon Fibre Reinforced Metal Matrix Composites forming technique, this
Invention combines electromagnetic pulse forming high-speed shaping characteristic, and molten metal high speed under the electromagnetic force that coil discharge generates is upward
Movement, with flaky fibrous material high-speed impact and adhesion, molten metal and fiber contacts time are extremely short, reduce metal and fiber knot
The interfacial reaction generated when conjunction effectively slows down the generation of interfacial brittle phase, improves the performance of composite material；3, the present invention at
High voltage transient is generated during shape makes molten metal be easier to wetting fibre material, and since there is no static pressure, fiber is not easily susceptible to
Pressure is destroyed；4, the present invention uses electro-magnetic forming, and curring time is extremely short, can greatly shorten the period of forming, make production efficiency
It greatly improves, is more suitable mass production.
Detailed description of the invention
Fig. 1 is the overall schematic of electromagnetic forming device described in the embodiment of the present invention 1；
Fig. 2 is the left view of electromagnetic forming device described in embodiment 1；
Fig. 3 is the overall schematic of electromagnetic forming device described in embodiment 2；
Fig. 4 is the photo of carbon fiber reinforced aluminum matrix composite prepared by embodiment 1；
Fig. 5 is the photo of carbon fiber reinforced aluminum matrix composite prepared by embodiment 2；
Fig. 6 is the photo of carbon fiber reinforced aluminum matrix composite prepared by embodiment 3.
Description of symbols:
1- bolt: 2- nut；3- top board；4- guide post；5- crucible fixed plate；6- coil base；7- lower platen；8- coil
Skeleton；9- discharge coil；10- crucible；11- molten metal；12- works out carbon cloth；13- cavity plate；14- bolt；15- cushion block；16-
Die shank；17- discharge control switch；18- capacitor；19- charging control switch；20- charge circuit motor；21- column；22- connects
Connect column.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing to the present invention make into
One step detailed description.
Embodiment 1
As shown in Figure 1, 2, a kind of fiber-reinforced metal matrix composite electromagnetic pulse forming device of present embodiment.Institute
State electromagnetic forming device include lower platen 7, it is coil charge and discharge device, coil fixing device, crucible 10, crucible positioning device, recessed
Mould 13 and cavity plate clamp device.Lower platen 7 is equipped with cylinder shape groove.Coil charge and discharge device includes discharge coil 9 and electric discharge
The concatenated capacitor 18 of coil 9 and the power supply in parallel with capacitor 18, wherein power supply and charging control switch 19 are gone here and there
Connection, discharge coil 9 are connected with discharge control switch 17.Coil fixing device includes the concentric coil rack with cylinder shape groove
8 and coil base 6, the discharge coil 9, which is embedded in, to be simultaneously fixed in the groove of coil rack 8, and coil rack 8, which is embedded in, to be simultaneously fixed on
In the groove of coil base 6, coil base 6 is embedded in and is fixed in the circular groove of lower platen 7.Crucible positioning device includes using
In the crucible fixed plate 5 of support crucible 10, crucible fixed plate 5 is equipped with inner hole, and inner port edge is mutually fitted with 10 outside of crucible, crucible
Positioning device is used to control the mounting height of crucible, makes the spacing 1mm between 10 bottom of crucible and discharge coil 9.It is described recessed
Mould 13 is semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible 10.The cavity plate clamp device
Apply pressure for fixing cavity plate 13, and to cavity plate 13, fastens cavity plate 13 and crucible 10 closely.
Crucible positioning device further include be fixed on lower platen 7, be symmetrically installed along 9 central axis of discharge coil two it is vertical
Column 21, crucible fixed plate 5 are connected by screw connection manner with 21 upper end of column, and blending bolt 14 adjusts crucible fixed plate 5 and installs height
Degree.The cavity plate clamp device includes top board 3, and is fixed on lower platen 7, symmetrically pacifies along 9 central axis of discharge coil
Two guide posts 4 of dress, top board 3 are fixed on 4 upper end of guide post by bolt 1 and nut 2, and the cavity plate 13 is fixed on top board 3
Lower section, guide post 4 and column 21 are separately mounted to 7 four side of lower platen.
Present embodiment prepares fiber-reinforced metal matrix composite using above-mentioned electromagnetic pulse forming device, specially makes
The carbon fiber reinforced aluminum matrix composite of standby thickness 2mm, reinforcement use the carbon cloth of two-way braiding, model C-03P-
180, monofilament T300, about 6-7 μm of diameter, density 1.78gcm3, face weight density is 120gm2, the stretching of reinforcement
Intensity is 3530MPa, elasticity modulus 230GPa.Metallic matrix using aluminium content 99.9% aluminium powder and content of magnesium 99.9%
Magnesium powder matches the alloy matrix aluminum for being 5% for magnesium mass fraction.Described method includes following steps:
1) solid metallic or alloy are placed in crucible 10, and crucible 10 is placed in high temperature furnace, be passed through nitrogen, nitrogen
Flow velocity 5L/min, is heated to 740 DEG C, and after alloy melting is molten metal, crucible 10 is placed in the inner hole in crucible fixed plate 5,
5 mounting height of crucible fixed plate is adjusted with bolt 14, and covers crucible surface along flaky fibrous material is placed on crucible 10,
Then the height that top board 3 is adjusted by bolt 1 and nut 2, makes to be fixed under the cavity plate 13 below top board 3 along face crucible
Edge on 10, and flanging is carried out along to flaky fibrous material on 13 lower edge of cavity plate and crucible 10；
2) it is charged with power supply to capacitor 18, this example discharge capacity is 12300 μ F, discharge voltage is
500V, discharge energy 1.54kJ disconnect charging control switch 19, closure electric discharge after the voltage of capacitor 18 reaches 500V
Control switch 17, capacitor 18 discharge to discharge coil 9, and molten metal high speed under the electromagnetic force that coil discharge generates is upward
Movement obtains fiber-reinforced metal matrix composite with flaky fibrous material high-speed impact and adhesion.Gained is composite formed
Part photo as shown in figure 4, its with a thickness of 2mm.
Embodiment 2
As shown in figure 3, a kind of fiber-reinforced metal matrix composite electromagnetic pulse forming device of present embodiment.It is described
Electromagnetic forming device includes lower platen 7, coil charge and discharge device, coil fixing device, crucible 10, crucible positioning device, cavity plate
13 and cavity plate clamp device.Lower platen 7 is equipped with cylinder shape groove.Coil charge and discharge device includes discharge coil 9 and discharge lines
9 concatenated capacitors 18 and the power supply in parallel with capacitor 18 are enclosed, wherein power supply is connected with charging control switch 19,
Discharge coil 9 is connected with discharge control switch 17.Coil fixing device include the concentric coil rack 8 with cylinder shape groove and
Coil base 6, the discharge coil 9 are embedded in and are fixed in the groove of coil rack 8, and coil rack 8 is embedded in and fixes online
It encloses in the groove of pedestal 6, coil base 6 is embedded in and is fixed in the circular groove of lower platen 7.Crucible positioning device includes being used for
The crucible fixed plate 5 of support crucible 10, crucible fixed plate 5 are equipped with inner hole, and inner port edge is mutually fitted with 10 outside of crucible, and crucible is fixed
Position device is used to control the mounting height of crucible, makes the spacing 3mm between 10 bottom of crucible and discharge coil 9.The cavity plate
13 be semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible 10.The cavity plate clamp device is used
Apply pressure in fixed cavity plate 13, and to cavity plate 13, fastens cavity plate 13 and crucible 10 closely.
Cavity plate clamp device includes top board 3 and two connecting columns 22, and the cavity plate 13 is fixed on 3 lower section of top board, on
Pressing plate 3 and crucible fixed plate 5 are mounted on connecting column 22 by screw connection manner respectively.The cavity plate clamp device further include with it is upper
The fixed die shank 16 of pressing plate 3.The crucible positioning device further includes the cushion block 15 of 2 tubuloses, and 15 internal diameter of cushion block is greater than connecting column
22 outer diameters, 22 bottom end of connecting column are nested in cushion block 15.
Fiber-reinforced metal matrix composite electromagnetism arteries and veins is prepared using electromagnetic pulse forming device realization described in the present embodiment
The method of punching forming, specifically prepares the carbon fiber reinforced aluminum matrix composite of thickness 0.5mm, and reinforcement uses the carbon of two-way braiding
Fiber cloth, model C-03P-180, monofilament T300, about 6-7 μm of diameter, density 1.78gcm3, face weight density is
120g·m2, the tensile strength of reinforcement is 3530MPa, elasticity modulus 230GPa.Metallic matrix uses aluminium content 99.9%
Aluminium powder and content of magnesium 99.9% magnesium powder, match the alloy matrix aluminum for being 5% for magnesium mass fraction.The method includes as follows
Step:
1) solid metallic or alloy are placed in crucible 10, and crucible 10 is placed in high temperature furnace, be passed through nitrogen, nitrogen
Flow velocity 5L/min, is heated to 740 DEG C, and after alloy melting is molten metal, crucible 10 is placed in the inner hole in crucible fixed plate 5,
And crucible surface is covered, crucible fixed plate 5 is fixed on connecting column 22, so along flaky fibrous material is placed on crucible 10
Afterwards by under cavity plate 13 along face crucible 10 edge, carry out flanging along to flaky fibrous material on 13 lower edge of cavity plate and crucible 10,
Then top board 3 is fixed on two 22 tops of connecting column, then nested into 22 bottom end of connecting column in cushion block 15, then use pressure
Machine applies downward pressure to die shank 16；
2) it is charged with power supply to capacitor 18, this example discharge capacity is 12300 μ F, discharge voltage is
570V, discharge energy 2.00kJ disconnect charging control switch 19, closure electric discharge after the voltage of capacitor 18 reaches 570V
Control switch 17, capacitor 18 discharge to discharge coil 9, and molten metal high speed under the electromagnetic force that coil discharge generates is upward
Movement obtains fiber-reinforced metal matrix composite with flaky fibrous material high-speed impact and adhesion.
Shaped composite piece photo obtained by the present embodiment as shown in figure 5, its with a thickness of 0.5mm.
Embodiment 3
The present embodiment prepares fiber-reinforced metal matrix composite, undocumented skill using device same as Example 1
Art feature is same as Example 1, the difference is that in step 2) discharge capacity be 12300 μ F, discharge voltage 640V, electric discharge
Energy is 2.52kJ.Spacing between 10 bottom of crucible and discharge coil 9 is 3mm.Shaped composite piece obtained by the present embodiment
Photo as shown in fig. 6, its with a thickness of 0.5mm.
Claims (7)
1. a kind of electromagnetic forming device, is used to prepare fiber-reinforced metal matrix composite, it is characterised in that: the electro-magnetic forming
Device includes lower platen (7), coil charge and discharge device, coil fixing device, crucible (10), crucible positioning device, cavity plate (13)
And cavity plate clamp device；
The coil charge and discharge device includes discharge coil (9)；
The crucible positioning device includes the crucible fixed plate (5) for support crucible (10), and crucible fixed plate (5) is equipped with interior
It is mutually fitted on the outside of hole, inner port edge and crucible (10), crucible positioning device is used to control the mounting height of crucible, makes crucible (10) bottom
Spacing between portion and discharge coil (9) is 1-3mm；
The cavity plate (13) is semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible (10)；
The cavity plate clamp device applies pressure for fixing cavity plate (13), and to cavity plate (13), makes cavity plate (13) and crucible
(10) close to fasten；
The lower platen (7) is equipped with cylinder shape groove；
The coil charge and discharge device further includes and discharge coil (9) concatenated capacitor (18) and in parallel with capacitor (18)
Power supply, wherein power supply is connected with charging control switch (19), and discharge coil (9) and discharge control switch (17) are gone here and there
Connection；
The coil fixing device includes concentric coil rack (8) and coil base (6) with cylinder shape groove, the electric discharge
Coil (9) is embedded in and is fixed in the groove of coil rack (8), and coil rack (8) is embedded in and is fixed on the recessed of coil base (6)
In slot, coil base (6) is embedded in and is fixed in the circular groove of lower platen (7)；
The crucible positioning device further includes two for being fixed on lower platen (7), being symmetrically installed along discharge coil (9) central axis
Root post (21), crucible fixed plate (5) are connected by screw connection manner with column (21) upper end, and it is solid that blending bolt (14) adjusts crucible
Fixed board (5) mounting height；
The cavity plate clamp device includes top board (3), and is fixed on lower platen (7), along discharge coil (9) central axis
Two guide posts (4) being symmetrically installed, top board (3) are fixed on guide post (4) upper end, the cavity plate by bolt (1) and nut (2)
(13) it is fixed below top board (3), guide post (4) and column (21) are separately mounted to (7) four side of lower platen.
2. a kind of electromagnetic forming device, is used to prepare fiber-reinforced metal matrix composite, it is characterised in that: the electro-magnetic forming
Device includes lower platen (7), coil charge and discharge device, coil fixing device, crucible (10), crucible positioning device, cavity plate (13)
And cavity plate clamp device；
The coil charge and discharge device includes discharge coil (9)；
The crucible positioning device includes the crucible fixed plate (5) for support crucible (10), and crucible fixed plate (5) is equipped with interior
It is mutually fitted on the outside of hole, inner port edge and crucible (10), crucible positioning device is used to control the mounting height of crucible, makes crucible (10) bottom
Spacing between portion and discharge coil (9) is 1-3mm；
The cavity plate (13) is semi-cylindrical, and Open Side Down, and edge can fasten to form confined space in lower edge and crucible (10)；
The cavity plate clamp device applies pressure for fixing cavity plate (13), and to cavity plate (13), makes cavity plate (13) and crucible
(10) close to fasten；
The lower platen (7) is equipped with cylinder shape groove；
The coil charge and discharge device further includes and discharge coil (9) concatenated capacitor (18) and in parallel with capacitor (18)
Power supply, wherein power supply is connected with charging control switch (19), and discharge coil (9) and discharge control switch (17) are gone here and there
Connection；
The coil fixing device includes concentric coil rack (8) and coil base (6) with cylinder shape groove, the electric discharge
Coil (9) is embedded in and is fixed in the groove of coil rack (8), and coil rack (8) is embedded in and is fixed on the recessed of coil base (6)
In slot, coil base (6) is embedded in and is fixed in the circular groove of lower platen (7)；
The cavity plate clamp device includes top board (3) and two connecting columns (22), and the cavity plate (13) is fixed on top board (3)
Lower section, top board (3) and crucible fixed plate (5) are mounted on connecting column (22) by screw connection manner respectively；
The cavity plate clamp device further includes the die shank (16) fixed with top board (3)；
The crucible positioning device further includes the cushion block (15) of 2 tubuloses, and cushion block (15) internal diameter is greater than connecting column (22) outer diameter, even
Column (22) bottom end is connect to be nested in cushion block (15).
3. a kind of method for preparing fiber-reinforced metal matrix composite using 2 described device of claims 1 or 2, it is characterised in that
Steps are as follows:
1) solid metallic or alloy are placed in crucible (10), and crucible (10) are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to crucible (10) to be placed in the inner hole on crucible fixed plate (5), earthenware is used after molten metal
Crucible positioning device adjusts the mounting height of crucible (10), and along the sheet-like fiber material for placing covering crucible surface on crucible (10)
Material, then by under cavity plate (13) along face crucible (10) edge, in cavity plate (13) lower edge and crucible (10) along to sheet-like fiber
Material carries out flanging, and is fixed with cavity plate clamp device；
2) it is charged with power supply to capacitor (18), after the voltage of capacitor (18) reaches forming voltage, disconnection is filled
Electric control switch (19) is closed discharge control switch (17), and capacitor (18) discharges to discharge coil (9), and molten metal is in coil
It is moved upwards at a high speed under the electromagnetic force that electric discharge generates, with flaky fibrous material high-speed impact and adhesion, obtains fiber reinforcement
Metal-base composites.
4. according to the method described in claim 3, it is characterized by: the step 1) solid metallic or alloy be aluminium, magnesium, copper,
One of titanium, almag, alusil alloy, aluminium copper；Step 1) the flaky fibrous material is carbon fiber or glass fibers
Dimension.
5. a kind of method for preparing fiber-reinforced metal matrix composite using claim 1 described device, it is characterised in that step
It is rapid as follows:
1) solid metallic or alloy are placed in crucible (10), and crucible (10) are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to crucible (10) to be placed in the inner hole on crucible fixed plate (5), spiral shell is used after molten metal
Bolt (14) adjusts crucible fixed plate (5) mounting height, then along the sheet-like fiber for placing covering crucible surface on crucible (10)
Material, then by under cavity plate (13) along face crucible (10) edge, in cavity plate (13) lower edge and crucible (10) along to sheet fibre
Top board (3) is fixed on guide post (4) upper end by dimension material progress flanging, blending bolt (1) and nut (2)；
2) it is charged with power supply to capacitor (18), after the voltage of capacitor (18) reaches forming voltage, disconnection is filled
Electric control switch (19) is closed discharge control switch (17), and capacitor (18) discharges to discharge coil (9), and molten metal is in coil
It is moved upwards at a high speed under the electromagnetic force that electric discharge generates, with flaky fibrous material high-speed impact and adhesion, obtains fiber reinforcement
Metal-base composites.
6. a kind of method for preparing fiber-reinforced metal matrix composite using claim 2 described device, it is characterised in that step
It is rapid as follows:
1) solid metallic or alloy are placed in crucible (10), and crucible (10) are placed in high temperature furnace, be passed through inert gas,
Solid metallic or alloy melting are heated to crucible (10) to be placed in the inner hole on crucible fixed plate (5), by earthenware after molten metal
Crucible fixed plate (5) is fixed on connecting column (22), and covers the flaky fibrous material of crucible surface along placement on crucible (10),
Then by under cavity plate (13) along face crucible (10) edge, in cavity plate (13) lower edge and crucible (10) along to flaky fibrous material
Flanging is carried out, top board (3) is then fixed on two connecting column (22) tops, connecting column (22) bottom end is then nested into pad
In block (15), then the pressure downward with fixed die shank (16) application of press machine pair and top board (3)；
2) it is charged with power supply to capacitor (18), after the voltage of capacitor (18) reaches forming voltage, disconnection is filled
Electric control switch (19) is closed discharge control switch (17), and capacitor (18) discharges to discharge coil (9), and molten metal is in coil
It is moved upwards at a high speed under the electromagnetic force that electric discharge generates, with flaky fibrous material high-speed impact and adhesion, obtains fiber reinforcement
Metal-base composites.
7. a kind of fiber-reinforced metal matrix composite being prepared according to any the method for claim 3-6, feature
It is the fiber-reinforced metal matrix composite with a thickness of 0.5-2mm.
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| CN202411381U (en) * | 2012-02-06 | 2012-09-05 | 湖南航天工业总公司 | Molding device of aluminum base silicon carbide particles, crystal whiskers or carbon fiber reinforced composite materials |
| CN103861932A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Forming device and method of thermoplasticity glass fiber reinforcement aluminum alloy laminate plate |
| CN103935049A (en) * | 2014-04-01 | 2014-07-23 | 湖南大学 | Laminated plate forming device and method based on electro-hydraulic forming |
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| CN202411381U (en) * | 2012-02-06 | 2012-09-05 | 湖南航天工业总公司 | Molding device of aluminum base silicon carbide particles, crystal whiskers or carbon fiber reinforced composite materials |
| CN103861932A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Forming device and method of thermoplasticity glass fiber reinforcement aluminum alloy laminate plate |
| CN103935049A (en) * | 2014-04-01 | 2014-07-23 | 湖南大学 | Laminated plate forming device and method based on electro-hydraulic forming |
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