CN109465424A - A kind of shock resistance endergonic structure part preparation method and structural member - Google Patents
A kind of shock resistance endergonic structure part preparation method and structural member Download PDFInfo
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- CN109465424A CN109465424A CN201910007125.XA CN201910007125A CN109465424A CN 109465424 A CN109465424 A CN 109465424A CN 201910007125 A CN201910007125 A CN 201910007125A CN 109465424 A CN109465424 A CN 109465424A
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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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
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/04—Casting by dipping
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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Abstract
The present invention discloses a kind of shock resistance endergonic structure part preparation method and structural member, the described method comprises the following steps: S100: preparing foamed aluminium inner core member, the foamed aluminium inner core member is preheated；S200: preparing mold, and the mold is equipped with type chamber, and the foamed aluminium inner core member is placed in the type chamber and is fixed, and has gap between the foamed aluminium inner core member and the type cavity wall；S300: raw material of aluminum alloy is fused into aluminum alloy melt, the aluminum alloy melt is warming up to cast temperature；S400: the aluminum alloy melt is poured into the gap between the foamed aluminium inner core member and the type cavity wall；S500: aluminium alloy layer is formed on foamed aluminium inner core member surface after the aluminum alloy melt is cooling, depanning obtains shock resistance endergonic structure part.The present invention breaches foamed aluminium and the integrally formed key technology of aluminium alloy, realizes foamed aluminium and aluminum alloy junction component disposal integral molding, provides technical support in the popularization and application in energy-absorbing anti-collision field and industrialized manufacture for foamed aluminium.
Description
Technical field
The present invention relates to anti-ballistic materials technical fields, and in particular to a kind of shock resistance endergonic structure part preparation method and knot
Component.
Background technique
Foamed aluminium is the new metallic material that molding mode production is foamed or infiltrated by aluminium alloy, ratio small with density
Many excellent performances such as intensity is big, damping vibration attenuation, sound insulation and noise reducing, energy-absorbing anti-collision is hit, insulating refractory is corrosion-resistant, make it in aviation
Space flight, rail traffic, transportation and communication, military armor vehicle, main battle tank, the police special vehicle of public security, bridge tunnel, machine
The fields such as tool lathe, steamer yacht all have good application prospect.Such as foamed aluminium material is applied in the energy-absorption box of vehicle,
When vehicle is hit foamed aluminium can continuous crumple, absorb big energy, and absorb impact force, can protect vehicle body and be not damaged
Wound, while protecting interior driver and passenger not by severe impact.
But the surface hollow of foamed aluminium material, it is rough, it is easily accessible dust, connection is inconvenient, is not easy to be fixedly mounted, and hinders
The popularization and application of foamed aluminium material are hindered.To promote foamed aluminium surface quality, assembling convenience and integrally-built use
Compatibility, in the prior art can be using the process of surface treatment such as surface bonding, welding, mechanical connection, powder metallurgy in foamed aluminium
Other metal materials of surface recombination.But the structural member of these treatment process preparation is there are surfacing and inner core bonding strength are low,
Inner core filling is uneven, the big situation of density of material, and traditional production technology is complicated, and processing step is more, and production efficiency is low.
Such as: a kind of utility model patent " vehicle energy absorption box " of Patent No. CN201220538160.8 discloses one
Kind vehicle energy absorption box, including cylindrical metallic box body, tubular box body is interior to clog full block foam aluminium.What this foamed aluminium was directly filled
Method production stage is complicated, and product quality consistency is poor, and foamed aluminium, which is not fixed firmly, to be leaned on.The hair of patent No. CN201610642875.0
Bright patent " a kind of aluminium foam sandwich structural composite material and preparation method thereof ", is existed using the epoxy filling glue of multicomponent low-density
Interface toughening layer is formed between composite material skin and foamed aluminium core material, can effectively improve interfacial adhesion strength.It is viscous by surface
The method connect prepares aluminium foam sandwich composite material, and the bonding strength between composite layer is weaker, the high and low temperature performance of adhesive
Difference is difficult to meet the high temperature resistant service performance of product and welded connection technology production performance, needs brush coating in production process, construction
Environment is poor,.The patent of invention " welding method of a kind of foamed aluminium and alloy " of patent No. CN200810019346.0, it is open a kind of
The welding method of foamed aluminium and alloy, welding step are as follows: cladding processing, the pre-heat treatment, secondary foaming, cooling treatment.Foam
The welding procedure production efficiency of aluminium and alloy is lower, complicated for operation, cannot achieve industrialization.Patent No. CN201520807847.0
Utility model patent " a kind of foam core beam ", a kind of foam core beam, including more mouthfuls of siphunculus, crossover sub, connections are disclosed
Fixed structure and foamed aluminium Sandwich Beam；More mouthfuls of siphunculus and crossover sub are welded by aluminium to be connected；Foamed aluminium Sandwich Beam is placed in aluminum profile
In pipe, aluminum profile pipe is connect with crossover sub axial restraint by being connected and fixed structure.The side that the product passes through mechanical connection
Formula fixed foam aluminium, bonding strength is limited, and connecting portion stress is excessive to be easily damaged, and needs to be arranged in foam aluminium surface and connect
Structure increases molding difficulty.A kind of patent of invention " foam metallurgy of aluminium connection method " of patent No. CN201610052113.5, relates to
And a kind of foam metallurgy of aluminium connection method, foamed aluminium to be connected is placed in immersion plating in allumen melt, in the docking of foamed aluminium
Or faying surface forms uniform immersion plating layer, by the foamed aluminium docking or faying surface fitting after immersion plating, hot pressing is cooling after the completion of hot pressing
Metallurgical composite joint is formed to room temperature.The process of surface treatment bonding strength of powder metallurgy is lower, the connection of each point on joint face
Intensity has differences, and product uniformity is poor.
In view of the above problems, creator of the present invention obtains wound of the invention by prolonged research and practice finally
New process breaches foamed aluminium and the integrally formed key technology of aluminium alloy, realizes foamed aluminium using the method for casting and forming
It with aluminum alloy junction component disposal integral molding, solves the problems, such as that foamed aluminium material integral installation is inconvenient for use, is foamed aluminium
Material provides technical support in the popularization and application in energy-absorbing anti-collision field and industrialized manufacture.
Summary of the invention
In order to solve the above technical problems, the technical solution adopted by the present invention is, a kind of shock resistance endergonic structure part is provided
Preparation method, comprising the following steps:
S100: preparing foamed aluminium inner core member, and the foamed aluminium inner core member is preheated；
S200: preparing mold, and the mold is equipped with type chamber, the foamed aluminium inner core member is placed in the type chamber solid
It is fixed, there is gap between the foamed aluminium inner core member and the type cavity wall；
S300: raw material of aluminum alloy is fused into aluminum alloy melt, the aluminum alloy melt is warming up to cast temperature；
S400: the aluminum alloy melt is poured into the gap between the foamed aluminium inner core member and the type cavity wall；
S500: aluminium alloy layer is formed on foamed aluminium inner core member surface after the aluminum alloy melt is cooling, depanning is resisted
Impact endergonic structure part.
Preferably, the mold is sand mold, sand mould casting method is used in the step S400.
Preferably, the mold is metal mold, gravity casting method or low-pressure casting method are used in the step S400.
Preferably, preheated in the S200 to the mold, the preheating temperature of the mold between 150 DEG C~350 DEG C it
Between.
Preferably, the raw material of aluminum alloy is selected from one or more of: aluminium silicon systems cast aluminium alloy gold, the casting of aluminum bronze system
Aluminium alloy, high purity alumina-magnesia cast aluminium alloy gold and aluminium zinc system cast aluminium alloy gold.
Preferably, the preheating temperature of the foamed aluminium inner core member is between 150 DEG C~640 DEG C in the step S100.
Preferably, the cast temperature of the aluminum alloy melt is between 680 DEG C~780 DEG C in the step S300.
Preferably, will by the way that fixed structure is arranged in the foamed aluminium inner core member or the type chamber in the step S200
Foamed aluminium inner core member positioning, make the width in gap between the foamed aluminium inner core member and the type cavity wall between 2mm~
Between 10mm.
Preferably, the type chamber is taken out negative pressure to -0.04MPa~-0.08MPa, closes the aluminium in the step S400
Golden liquid is cooled and shaped in subnormal ambient.
Compared with the prior art the beneficial effects of the present invention are:
(1) it is integrally formed with aluminium alloy layer to breach foamed aluminium for shock resistance endergonic structure part preparation method of the present invention
Key technology, can be realized using sand casting and permanent mold casting (including gravitational casting, low pressure casting) technique to foam
The partially or fully cladding of aluminium inner core member, aluminum alloy melt can flow into the hole of foam aluminium surface, the aluminium alloy layer of cooling and shaping
It is engaged between foam aluminum contact surface, bonding strength is high, will not destroy the structure of foamed aluminium inner core, guarantee the shock resistance of structural member
Intensity.
(2) type chamber is taken out negative pressure by the present invention, and subnormal ambient enables aluminum alloy to liquid and is easier to permeate up, and can make molding aluminium
Alloy-layer is thinner, and the whole more lightweight of structural member with shortening forming time, can eliminate the casting such as stomata, cold shut of aluminium alloy layer
Defect is made, the structural homogenity and compactness of foamed aluminium surface aluminium alloy layer are improved.
(3) dimensions that the present invention can be needed according to structural member product requires to select foamed aluminium inner core member and type chamber
Geomery, also the thickness of adjustable cladding aluminium alloy layer, i.e., can be made knot of various shapes by this method on demand
Component realizes product disposal integral molding.
The present invention also provides a kind of structural members, are made by above-mentioned shock resistance endergonic structure part preparation method, the structure
Part includes foamed aluminium inner core and the aluminium alloy layer for being wrapped in the foamed aluminium core surface.
The foamed aluminium inner core of structural member of the present invention and the aluminium alloy layer on surface are completely embedded, without departing from structural member
Geomery can be prepared on demand, and manufactured structural member has lightweight, stiffness height, excellent shock resistance, installation connection etc.
Compatible good characteristic can be used for aerospace, rail traffic, all kinds of communications and transportation directly as shock resistance energy absorbing component
The fields such as vehicle, military armor vehicle, main battle tank, the police special vehicle of public security, bridge tunnel, mechanical machine tool, steamer yacht.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution in various embodiments of the present invention
The attached drawing used is briefly described.
Fig. 1 is the process flow chart of shock resistance endergonic structure part preparation method of the present invention；
Fig. 2 is the sand mould structure schematic diagram of two sand mould casting method of embodiment；
Fig. 3 is the metallic type structure schematic diagram of example IV metal mold gravity casting method；
Fig. 4 is the metallic type structure schematic diagram of five metal mould low-pressure casting method of embodiment.
Digital representation in figure:
1. lower 23. sand mold running channel of sand mold, 24. venthole, 25. positioning pin 3. of sand mold 22. in foamed aluminium inner core member 21.
First metal mold, 31. 43. cast gate of metal mold running channel 4. second metal mold, 41. heating furnace, 42. stalk, 5. aluminum alloy melt
6. taking out negative pressure device
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
The present embodiment provides a kind of shock resistance endergonic structure part preparation method, by the technique of casting and forming make foamed aluminium with
Aluminium alloy is integrally formed, as shown in Figure 1, method includes the following steps:
S100: corresponding machining is carried out to foamed aluminium according to trimmed size size and obtains foamed aluminium inner core member, foam
Aluminium inner core material, which can according to need, selects closed-cell aluminum foam, fine-crystal spume aluminium alloy or other aluminium base foamed composites, by foam
The preheating of aluminium inner core member.
S200: preparing mold, and mold, which is equipped with, is used for the molding type chamber of structural member, and foamed aluminium inner core member is placed in type chamber
It is fixed, it can be using positioning pin method (positioning pin being arranged in type chamber, corresponding cotter way is arranged in foamed aluminium), the positioning of foamed aluminium core print
(positioning is arranged in method (core print of protrusion being arranged on foamed aluminium side wall, positioned by core print), frame positioning mode in type chamber
Frame, foamed aluminium are positioned by frame), point contact positioning mode (anchor point is set, and anchor point is contacted with foamed aluminium makes foam in type chamber
Aluminium position is fixed) etc..There is gap, the geomery of type chamber can also be according to structure between foamed aluminium inner core member and type cavity wall
The needs of part are adjusted.
S300: being fused into aluminum alloy melt for raw material of aluminum alloy, in order to promote aluminium alloy infiltration effect, generally selects siliceous
Measure higher aluminium silicon systems cast aluminium alloy gold, such as ZL102.The raw material of aluminum alloy of casting can cast aluminium with aluminium silicon systems and close
Gold, aluminum bronze system cast aluminium alloy gold, high purity alumina-magnesia cast aluminium alloy gold and aluminium zinc system cast aluminium alloy gold are warming up to casting temperature after cleaning molten
Degree.
S400: aluminum alloy melt is injected into mold, aluminum alloy melt enters type chamber, and infiltration is filled in foamed aluminium inner core member and type chamber
In gap between inner wall, the Integratively formed of the structural member of foam aluminium surface cladding aluminium alloy layer is realized.
S500: aluminum alloy melt can flow into the hole of foam aluminium surface, allow aluminum alloy melt natural cooling in type cavity space gap,
Aluminium alloy layer is formed on foamed aluminium inner core member surface, is engaged, connects between the aluminium alloy layer and foam aluminum contact surface of cooling and shaping
Intensity is high, and depanning obtains shock resistance endergonic structure part.
The shock resistance endergonic structure part preparation method of the present embodiment realizes aluminium alloy layer to bubble using cast shaping process
The aluminium alloy layer on the partially or fully cladding of foam aluminium, foamed aluminium inner core and surface is completely embedded, without departing from, and bubble will not be destroyed
The structure of foam aluminium inner core, guarantees the impact strength of structural member.Manufactured structural member has that lightweight, impact resistance be strong, matching degree
High advantage can be used for aerospace, rail traffic, all kinds of transportation and communications, vehicle directly as shock resistance energy absorbing component
Energy-absorption box, military armor vehicle, main battle tank, the police special vehicle of public security, bridge tunnel, mechanical machine tool, steamer yacht etc.
Field.And this method processing step is simple, production efficiency greatly improves, be foamed aluminium energy-absorbing anti-collision field popularization and application and
Industrialized manufacture provides technical support.
Embodiment two
As depicted in figs. 1 and 2, a kind of shock resistance endergonic structure part sand casting preparation method, comprising the following steps:
S100: corresponding machining is carried out to foamed aluminium according to trimmed size size and obtains foamed aluminium inner core member 1, will be steeped
Foam aluminium inner core member 1 preheats, and preheating temperature is 150 DEG C~640 DEG C.
S200: preparing mold, and the mold in this implementation is sand mold, including upper sand mold 21 and lower sand mold 22, and upper sand mold 21 can
It is removed with opening, lower sand mold 22, which is equipped with, is used for the molding type chamber of structural member, is equipped with the venthole being connected to type chamber in upper sand mold 21
24.Type is intracavitary to be equipped with the fixed structure for being used for fixed foam aluminium inner core member 1, and fixed structure is positioning pin 25 in the present embodiment, will
Foamed aluminium inner core member 1 is fixed by positioning pin 25, makes have gap, the width in gap between foamed aluminium inner core member 1 and type cavity wall
Degree is 2mm~10mm, which determines the thickness that aluminium alloy layer is coated in structural member product.
In other embodiments, fixation of the foamed aluminium inner core member 1 in type chamber can use foamed aluminium core print positioning mode
(posting is arranged in type chamber in (core print of protrusion being arranged on foamed aluminium side wall, positioned by core print), frame positioning mode
Frame, foamed aluminium are positioned by frame), point contact positioning mode (anchor point is set, and anchor point is contacted with foamed aluminium makes foamed aluminium in type chamber
Position is fixed) etc., the width in gap meets product design parameter between guarantee type chamber and foamed aluminium inner core member 1.
S300: raw material of aluminum alloy is fused into aluminum alloy melt, cast temperature is warming up to after cleaning molten, cast temperature is
680 DEG C~780 DEG C.
The width (coating the thickness of aluminium alloy layer) in gap, foamed aluminium between above-mentioned type chamber and foamed aluminium inner core member 1
The preheating temperature of inner core member 1 and the cast temperature of aluminum alloy melt are adjusted according to the dimensions and complexity of structural member,
To guarantee structural member stable molding.Foamed aluminium inner core member 1 preheating temperature adjustment rule it is as follows: for small dimension, simple shape,
The biggish workpiece of surfaces of aluminum alloy layer thickness, foamed aluminium inner core member 1 select relatively low preheating temperature；For large-scale, shape is multiple
Miscellaneous, the lesser structural member of surfaces of aluminum alloy layer thickness, selects higher preheating temperature.The adjustment rule of aluminum alloy melt cast temperature
As follows: for small dimension, simple shape, the biggish workpiece of surfaces of aluminum alloy layer thickness, aluminum alloy melt selects relatively low casting
Temperature selects higher cast temperature for large-scale, complex-shaped, the lesser structural member of surfaces of aluminum alloy layer thickness.
S400: sand mold is equipped with sand mold running channel 23, and sand mold running channel 23 is connected to cavity bottom, and aluminum alloy melt is infused from sprue channel open
Enter sand mold, aluminum alloy melt enters type chamber along sand mold running channel 23, is filled into the gap between foamed aluminium inner core member 1 and type cavity wall
In.
S500: allowing aluminum alloy melt natural cooling in type cavity space gap, forms aluminium alloy layer on 1 surface of foamed aluminium inner core member,
It is engaged between the aluminium alloy layer of cooling and shaping and foam aluminum contact surface, bonding strength is high, and depanning obtains shock resistance endergonic structure part.
The present embodiment uses sand mould casting method, and the dimensions that can be needed according to structural member product requires to select to steep
The geomery of foam aluminium inner core member 1 and type chamber, also it is adjustable cladding aluminium alloy layer thickness, i.e., by this method can be on-demand
Structural member of various shapes is made, realizes product disposal integral molding.
Embodiment three
As depicted in figs. 1 and 2, a kind of shock resistance endergonic structure part sand casting forming preparation method, comprising the following steps:
S100: corresponding machining is carried out to foamed aluminium according to trimmed size size and obtains foamed aluminium inner core member 1, will be steeped
Foam aluminium inner core member 1 preheats, and preheating temperature is 150 DEG C~640 DEG C.
S200: preparing mold, and the mold in this implementation is sand mold, including upper sand mold 21 and lower sand mold 22, and upper sand mold 21 can
It is removed with opening, lower sand mold 22, which is equipped with, is used for the molding type chamber of structural member, is equipped with the venthole being connected to type chamber in upper sand mold 21
24.Fixed structure is set in foamed aluminium inner core member 1 or type chamber, foamed aluminium inner core member 1 is fixed by fixed structure, makes foamed aluminium
There is gap, the width in gap is 2mm~10mm between inner core member 1 and type cavity wall.
Upper sand mold 21 is equipped with the venthole 24 being connected to type chamber, and the diameter of venthole 24 is 1~3mm, and distribution density is every
Square decimeter 2~8, the distribution of venthole 24 and quantity are adjusted accordingly according to the dimensions of product.Upper sand mold 21 and one
It takes out negative pressure device 6 to connect, taking out negative pressure device 6 includes vacuum (-tight) housing, control valve and vacuum tube, and vacuum (-tight) housing is mounted on 24 region of venthole
Top allows pumping negative pressure device 6 to pass through 24 extraction type chamber air of venthole.
S300: raw material of aluminum alloy is fused into aluminum alloy melt, cast temperature is warming up to after cleaning molten, cast temperature is
680 DEG C~780 DEG C.
S400: type chamber is evacuated to negative pressure with negative pressure device 6 is taken out, pressure is -0.04MPa~-0.08MPa.Sand mold is equipped with sand
Type running channel 23, sand mold running channel 23 are connected to cavity bottom, aluminum alloy melt are injected sand mold from sprue channel open, aluminum alloy melt is poured along sand mold
Road 23 enters type chamber, is filled into the gap between foamed aluminium inner core member 1 and type cavity wall.
S500: the aluminum alloy melt in type cavity space gap is cooled and shaped in subnormal ambient, in 13 surface shape of foamed aluminium inner core member
At aluminium alloy layer, shock resistance endergonic structure part is made.
Type chamber is taken out into negative pressure in the present embodiment, subnormal ambient enables aluminum alloy to liquid and is easier to permeate up flowing, can make into
The aluminium alloy layer of type is thinner, and the whole more lightweight of structural member eliminates the casting flaws such as stomata, the cold shut of aluminium alloy layer, improves bubble
The structural homogenity and compactness of foam aluminium surface aluminium alloy layer.
Example IV
As shown in figures 1 and 3, a kind of shock resistance endergonic structure part metal mold gravity casting molding method for preparing, including with
Lower step:
S100: corresponding machining is carried out to foamed aluminium according to trimmed size size and obtains foamed aluminium inner core member 1, will be steeped
Foam aluminium inner core member 1 preheats, and preheating temperature is 150 DEG C~640 DEG C.
S200: preparing mold, and the mold in this implementation is the first metal mold 3 of opposite opened, including left metal mold and right gold
Genotype, the first metal mold 3 can control opening, and the first metal mold 3, which is equipped with, is used for the molding type chamber of structural member, left metal mold and the right side
There is ventilation gap between metal mold.First metal mold 3 is preheated to 150 DEG C~350 DEG C, and foamed aluminium inner core member 1 is fixed on type
In chamber, make that there is gap between foamed aluminium inner core member 1 and type cavity wall, the width in gap is 2mm~10mm.
S300: raw material of aluminum alloy is fused into aluminum alloy melt, cast temperature is warming up to after cleaning molten, cast temperature is
680 DEG C~780 DEG C.
S400: the first metal mold 3 is equipped with metal mold running channel 31, and metal mold running channel 31 is connected to cavity bottom, by aluminium alloy
Liquid injects the first metal mold 3 from sprue channel open, and aluminum alloy melt enters type chamber along metal mold running channel 31, is filled into foamed aluminium inner core member 1
In gap between type cavity wall.
In casting process, type chamber can be taken out to negative pressure to -0.04MPa~-0.08MPa, realize aluminum alloy melt in gap
In upward abundant infiltration filling.
S500: the aluminum alloy melt in type cavity space gap is cooled and shaped, and forms aluminium alloy layer on 1 surface of foamed aluminium inner core member, out
Mould obtains shock resistance endergonic structure part.
The present embodiment uses the preparation method of metal mold gravity casting, and high production efficiency, production cost is low, prepared bubble
Foam aluminium and Al alloy composite polymorphic structure casting dimension accuracy height, excellent surface quality, machining allowance are small.
Embodiment five
As shown in Figure 1 and Figure 4, a kind of shock resistance endergonic structure part metal-mold low-pressure casting molding method for preparing, including with
Lower step:
S100: corresponding machining is carried out to foamed aluminium according to trimmed size size and obtains foamed aluminium inner core member 1, will be steeped
Foam aluminium inner core member 1 preheats, and preheating temperature is 150 DEG C~640 DEG C.
S200: preparing mold, and the mold in this implementations is the second metal mold 4, including left metal mold and right metal mold, and second
Metal mold 4 can control opening, and the second metal mold 4, which is equipped with, is used for the molding type chamber of structural member, left metal mold and right metal mold it
Between have ventilation gap.Second metal mold 4 is preheated to 150 DEG C~350 DEG C, and foamed aluminium inner core member 1 is fixed in type chamber, makes to steep
There is gap, the width in gap is 2mm~10mm between foam aluminium inner core member 1 and type cavity wall.
It is equipped with heating furnace 41 below S300: the second metal mold 4, is equipped with stalk 42 in heating furnace 41.By aluminium alloy former material
Material is put into heating furnace 41, is fused into aluminum alloy melt 5,680 DEG C~780 DEG C are warming up to after cleaning molten.
4 bottom of S400: the second metal mold is equipped with cast gate 3, and cast gate 3 is connected to cavity bottom.Into closed heating furnace 41
Pressurization enables aluminum alloy to liquid 5 and rises along stalk 42, and enters type chamber from cast gate 3, and it is intracavitary with type to be filled into foamed aluminium inner core member 1
In gap between wall.
In casting process, type chamber can be taken out to negative pressure to -0.04MPa~-0.08MPa, realize aluminum alloy melt 5 in gap
In upward abundant infiltration filling.
S500: the aluminum alloy melt 5 in type cavity space gap is cooled and shaped, and forms aluminium alloy layer on 1 surface of foamed aluminium inner core member, out
Mould obtains shock resistance endergonic structure part.
It is the preparation method of metal-mold low-pressure casting that the present embodiment, which uses another kind, and high degree of automation, production cost is low,
Compared with the structural member of gravity foundry technology preparation, the structural member size of this method preparation is bigger, and shape is increasingly complex, casting essence
Du Genggao.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that can be carried out to it in the theory structure defined by the claims in the present invention, specification and range
Many changes, modifications, and even equivalents, but fall in protection scope of the present invention.
Claims (10)
1. a kind of shock resistance endergonic structure part preparation method, which comprises the following steps:
S100: preparing foamed aluminium inner core member, and the foamed aluminium inner core member is preheated；
S200: preparing mold, and the mold is equipped with type chamber, and the foamed aluminium inner core member is placed in the type chamber to fixed, institute
Stating has gap between foamed aluminium inner core member and the type cavity wall；
S300: raw material of aluminum alloy is fused into aluminum alloy melt, the aluminum alloy melt is warming up to cast temperature；
S400: the aluminum alloy melt is poured into the gap between the foamed aluminium inner core member and the type cavity wall；
S500: aluminium alloy layer is formed on foamed aluminium inner core member surface after the aluminum alloy melt is cooling, depanning obtains shock resistance
Endergonic structure part.
2. shock resistance endergonic structure part preparation method as described in claim 1, which is characterized in that the mold is sand mold, institute
It states in step S400 using sand mould casting method.
3. shock resistance endergonic structure part preparation method as described in claim 1, which is characterized in that the mold is metal mold,
Gravity casting method or low-pressure casting method are used in the step S400.
4. shock resistance endergonic structure part preparation method as claimed in claim 3, which is characterized in that the mould in the S200
Tool preheating, the preheating temperature of the mold is between 150 DEG C~350 DEG C.
5. the shock resistance endergonic structure part preparation method as described in claim 1-4 is any, which is characterized in that the aluminium alloy is former
Material is selected from one or more of: aluminium silicon systems cast aluminium alloy gold, aluminum bronze system cast aluminium alloy gold, high purity alumina-magnesia cast aluminium alloy gold and aluminium
Zinc system cast aluminium alloy gold.
6. shock resistance endergonic structure part preparation method as claimed in claim 5, which is characterized in that in the step S100, institute
The preheating temperature of foamed aluminium inner core member is stated between 150 DEG C~640 DEG C.
7. shock resistance endergonic structure part preparation method as claimed in claim 6, which is characterized in that in the step S300, institute
The cast temperature of aluminum alloy melt is stated between 680 DEG C~780 DEG C.
8. shock resistance endergonic structure part preparation method as claimed in claim 5, which is characterized in that pass through in the step S200
Fixed structure is arranged in the foamed aluminium inner core member or the type chamber to position the foamed aluminium inner core member, makes the foamed aluminium
The width in gap is between 2mm~10mm between inner core member and the type cavity wall.
9. shock resistance endergonic structure part preparation method as claimed in claim 5, which is characterized in that, will in the step S400
The type chamber takes out negative pressure to -0.04MPa~-0.08MPa, is cooled and shaped the aluminum alloy melt in subnormal ambient.
10. a kind of structural member, which is characterized in that by the shock resistance endergonic structure part system as described in claim requires 1-9 any
Preparation Method is made, and the structural member includes foamed aluminium inner core and the aluminium alloy layer for being wrapped in the foamed aluminium core surface.
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| CN111299549A (en) * | 2020-03-10 | 2020-06-19 | 中信戴卡股份有限公司 | Preparation method of foamed aluminum filled aluminum alloy cavity casting |
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| CN112008064B (en) * | 2020-08-31 | 2021-12-14 | 燕山大学 | Method for manufacturing open-cell foam metal filling composite material |
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