CN105562648B - A kind of method for shaping connecting integration with aluminium alloy semi-solid for titanium alloy - Google Patents
A kind of method for shaping connecting integration with aluminium alloy semi-solid for titanium alloy Download PDFInfo
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- CN105562648B CN105562648B CN201610131234.9A CN201610131234A CN105562648B CN 105562648 B CN105562648 B CN 105562648B CN 201610131234 A CN201610131234 A CN 201610131234A CN 105562648 B CN105562648 B CN 105562648B
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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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
Abstract
The invention discloses a kind of method for shaping connecting integration with aluminium alloy semi-solid for titanium alloy, it be divided into by the titanium alloy of pre-connection be prepared into the titanium alloy tube of certain size and shape, titanium alloy tube is put into preheated together in mould, aluminium alloy is prepared to semi-solid blank or semi solid slurry that liquid fraction is 50-60%, aluminium alloy semi-solid state blank or semi solid slurry be moved into the titanium alloy tube in mould, punch-pin is rapid descending and is pressurizeed, and realizes that die forging connects the several steps of monolithic molding.The good fluidity that the present invention possesses when being in semisolid using aluminium alloy, realizes aluminium alloy Accurate Shaping；The formation of big thickness brittle compound layer is avoided, can react to form stable interface by the liquid phase in aluminium alloy semi-solid state blank and titanium alloy, connection reliability is high.In addition, this method is simple and easy to apply without special equipment, it is that titanium alloy and aluminium alloy shaping connecting integration can be achieved using common hydraulic press.
Description
Technical field
Closed the present invention relates to a kind of method of semi-solid-state shaping connecting integration, more particularly to a kind of titanium alloy that is used for aluminium
The method of golden semi-solid-state shaping connecting integration, belongs to material connection and forming technique field.
Background technology
Material attachment structure has the premium properties that multiple material is integrated, thus in Aero-Space, space technology, core work
The fields such as industry, microelectronics, automobile, petrochemical industry are widely used.Due to the physical property and chemistry of pre-connection material
There is very big difference in performance, the requirement to connection is harsher.
Semi-solid-state shaping includes rheological molding and thixotropic forming.Obtained semisolid non-dendritic slurry is directly formed
Processing, referred to as rheological molding；And this slurry is first frozen into ingot casting, it is certain big further according to needing to cut into cast metals
It is small, make its be reheated to semi-solid temperature it is interval and carry out be processed into thixotropic forming.Due to Solid-phase welding between titanium aluminium
It is more difficult, the shortcomings of there is low efficiency, very flexible；And titanium aluminium melting welding is present that weld crack tendency is big, welding deformation is big, crisp
The problems such as property metallic compound is serious, the reliability of connection is not high, the uniformity of bond strength and joint between connecting material
It is difficult to meet and requires.
The content of the invention
In order to solve the weak point present in above-mentioned technology, it is used for titanium alloy and aluminium alloy half the invention provides one kind
The method of solid molding connecting integration.
In order to solve the above technical problems, the technical solution adopted by the present invention is：One kind is used for titanium alloy and aluminium alloy half
The method of solid molding connecting integration, it is divided into following steps：
A, geomery and performance requirement according to part formed thereby, by the titanium alloy of pre-connection be prepared into certain size and
The titanium alloy tube of shape；
B, titanium alloy tube is put into mould preheated together, the temperature of preheating is 300-350 DEG C；
C, aluminium alloy is prepared into certain size and the aluminum alloy blank of shape, aluminum alloy blank is then used into electromagnetism sense
Heater is answered to be preheated to 600-630 DEG C, be incubated 15-25 minutes, it is 50-60% to enable aluminum alloy to blank and be converted into liquid fraction
Semi-solid blank；
Or using metal molten stove by aluminum alloy melting, smelting temperature is 700-730 DEG C, after progress after aluminum alloy melting
Cooling, and electromagnetic agitation is applied to it in aluminium alloy cooling procedure, it is the partly solid of 50-60% to enable aluminum alloy to be converted to liquid fraction
State slurry；
D, it will preheat and be incubated the aluminium alloy semi-solid state blank of completion or aluminium alloy semi-solid slurry is moved into mould
In titanium alloy tube in, it is ensured that aluminium alloy semi-solid state blank is adjacent with titanium alloy tube；
E, punch-pin are rapid descending and are pressurizeed, and realize that die forging connects monolithic molding；After die forging completion, on punch-pin
OK, be about to aluminium alloy and the good product ejection of two kinds of material joint formings of titanium alloy on push rod, complete whole Semi solid bonding into
The process of shape integration.
The downward pressure of punch-pin of the present invention is 180-200kN, and descending speed is 10mm/s, and the dwell time is 10-20s.
Titanium alloy is any of TA2, TA7, TB2, TC4 titanium alloy；Aluminium alloy is in 6063,6061,7075,2024 aluminium alloy
It is any.
The present invention combines joint forming technology and semi-solid forming technology, has when being in semisolid using aluminium alloy
Standby good fluidity, realizes aluminium alloy Accurate Shaping；Aluminium alloy semi-solid state blank temperature is low relative to melting welding, so as to avoid
The formation of big thickness brittle compound layer, therefore can react to form steady by the liquid phase in aluminium alloy semi-solid state blank and titanium alloy
Demarcation face, connection reliability is high.In addition, this method is simple and easy to apply without special equipment, it is that titanium can be achieved using common hydraulic press
Alloy shapes connecting integration with aluminium alloy.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1, Fig. 2 are operating method schematic diagram of the embodiment of the present invention one to example IV.
Fig. 3 is operating method schematic diagram of the embodiment of the present invention five to embodiment eight.
In figure：1st, punch-pin；2nd, mould；4th, titanium alloy tube；5th, product；6th, cushion block；7th, push rod；31st, aluminium alloy semi-solid base
Material；32nd, aluminium alloy semi-solid slurry.
Embodiment
As shown in FIG. 1 to 3, it is used for titanium alloy and aluminium alloy semi-solid shaping connecting integration the invention provides one kind
Method, be specifically divided into following steps：
A, geomery and performance requirement according to part formed thereby, by the titanium alloy of pre-connection be prepared into certain size and
The titanium alloy tube 4 of shape；
B, titanium alloy tube 4 is put into mould 2 preheated together, the temperature of preheating is 300-350 DEG C；
C, aluminium alloy is prepared into certain size and the aluminum alloy blank of shape, aluminum alloy blank is then used into electromagnetism sense
Heater is answered to be preheated to 600-630 DEG C, be incubated 15-25 minutes, it is 50-60% to enable aluminum alloy to blank and be converted into liquid fraction
Aluminium alloy semi-solid state blank 31；
Or using metal molten stove by aluminum alloy melting, smelting temperature is 700-730 DEG C, after progress after aluminum alloy melting
Cooling, and electromagnetic agitation is applied to it in aluminium alloy cooling procedure, enable aluminum alloy to be converted to the aluminium conjunction that liquid fraction is 50-60%
Golden semi solid slurry 32；
D, it will preheat and be incubated the aluminium alloy semi-solid state blank 31 of completion or be moved into aluminium alloy semi-solid slurry 32
In titanium alloy tube 4 in mould 2；The aluminium alloy semi-solid state blank 31 is adjacent with titanium alloy tube 4；
E, punch-pin 1 are rapid descending and are pressurizeed, and realize that die forging connects monolithic molding；After die forging completion, on punch-pin 1
OK, it is about to aluminium alloy on push rod 7 and the good product 5 of two kinds of material joint formings of titanium alloy is ejected, completes whole Semi solid bonding
Forming integrated process.
The downward pressure of above-mentioned steps d convex moulds 1 is 180-200kN, and descending speed is 10mm/s, and the dwell time is
10-20s。
Contemplate present invention firstly provides titanium alloy and aluminium alloy shaping connecting integration, i.e., using aluminium alloy under semisolid
The good fluidity and reactivity being had, while aluminium alloy Accurate Shaping is ensured, realize aluminium alloy and titanium alloy it
Between be reliably connected.The present invention is applied to conventional most of titanium alloys and aluminium alloy, and be particularly suitable for use in TA2, TA7, TB2, TC4
Titanium alloy and 6063,6061,7075,2024 aluminium alloys.Titanium alloy and aluminium alloy below with regard to this several model combines specific real
Example is applied to be further elaborated the present invention, but the invention is not limited in the titanium alloy of cited embodiment, aluminium alloy model.
Embodiment one：TA2 titanium alloys and 6063 aluminium alloys
A, for the ease of the aluminium alloy semi-solid state blank after preheating is put into titanium alloy tube, it is considered to thermal coefficient of expansion is
2.3×10-5Factor, by TA2 titanium alloy pipes be processed into size be φ 50mm × 5mm × h40mm TA2 titanium alloy tubes；Will
6063 aluminium alloy bars are processed into 6063 aluminum alloy blanks that size is φ 39mm × h50.6mm；
B, TA2 titanium alloy tubes are put into mould preheated together, preheating temperature is 300 DEG C；
C, using electromagnetic induction heater 6063 aluminum alloy blanks are preheated to 620 DEG C, are incubated 20 minutes, 6063 aluminium are closed
Golden blank is converted into the semi-solid blank that liquid fraction is 60%；
D, it will preheat and be incubated 6063 aluminium alloy semi-solid state blanks 3 of completion and move into the TA2 titanium alloy tubes in mould, protect
Demonstrate,prove 6063 aluminium alloy semi-solid state blanks adjacent with TA2 titanium alloy tubes；
The rapid descending and 196KN that pressurizes of e, punch-pin, punch-pin downstream rate is 10mm/s, and the dwell time is 10s, makes semisolid
6063 aluminium alloy semi-solid state blanks of humidity province complete die forging joint forming；Then punch-pin 1 is up, is about on push rod 7 by 6063
The product 5 of aluminium alloy and TA2 titanium alloys two sections of material composition is ejected together, takes out product 5.
Embodiment two：TA7 titanium alloys and 7075 aluminium alloys
A, TA7 titanium alloy pipes are processed into the TA7 titanium alloy tubes that size is φ 60mm × 5mm × h45mm.
B, TA7 titanium alloy tubes are put into mould preheated together, preheating temperature is 320 DEG C；
C, 7075 aluminium alloy bars are processed into the blank that size is φ 49mm × h62mm, filled using electromagnetic induction heating
Put and 7075 aluminum alloy blanks are preheated to 620 DEG C, be incubated 18 minutes, 7075 aluminum alloy blanks are converted into half that liquid fraction is 56%
Solid blank；
D, will preheat and be incubated 7075 aluminium alloy semi-solid state blanks of completion move into mould in TA7 titanium alloy tubes in, protect
Demonstrate,prove 7075 aluminium alloy semi-solid state blanks adjacent with TA7 titanium alloy tubes；
The rapid descending and 190KN that pressurizes of e, punch-pin, punch-pin downstream rate is 10mm/s, and the dwell time is 15s, makes semisolid
7075 aluminium alloy semi-solid state blanks of humidity province complete die forging joint forming；Then, punch-pin 1 is up, is about on push rod 7 by 7075
The product 5 of aluminium alloy and TA7 titanium alloys two sections of material composition is ejected together, takes out product 5.
Embodiment three：TB2 titanium alloys and 2024 aluminium alloys
A, TB2 titanium alloy pipes are processed into the TB2 titanium alloy tubes that size is φ 40mm × 5mm × h35mm；
B, TB2 titanium alloy tubes are put into mould preheated together, preheating temperature is 350 DEG C；
C, 2024 aluminium alloy bars are processed into the blank that size is φ 29mm × h50mm, filled using electromagnetic induction heating
Put and 2024 aluminum alloy blanks are preheated to 630 DEG C, be incubated 15 minutes, 2024 aluminum alloy blanks are converted into half that liquid fraction is 50%
Solid blank；
D, will preheat and be incubated 2024 aluminium alloy semi-solid state blanks of completion move into mould in TB2 titanium alloy tubes in, protect
Demonstrate,prove 2024 aluminium alloy semi-solid state blanks adjacent with TB2 titanium alloy tubes；
The rapid descending and 180KN that pressurizes of e, punch-pin, punch-pin downstream rate is 10mm/s, and the dwell time is 20s, makes semisolid
2024 aluminium alloy semi-solid state blanks of humidity province complete die forging joint forming；Then, punch-pin is up, is about on push rod by 2024 aluminium
The product of alloy and TB2 titanium alloys two sections of material composition is ejected together, takes out product.
Example IV：TC4 titanium alloys and 6061 aluminium alloys
A, TC4 titanium alloy pipes are processed into the TC4 titanium alloy tubes that size is φ 55mm × 5mm × h45mm；
B, TC4 titanium alloy tubes are put into mould preheated together, preheating temperature is 300 DEG C；
C, 6061 aluminium alloy bars are processed into the blank that size is φ 44mm × h60mm, filled using electromagnetic induction heating
Put and 6061 aluminum alloy blanks are preheated to 600 DEG C, be incubated 25 minutes, 6061 aluminum alloy blanks are converted into half that liquid fraction is 55%
Solid blank；
D, it will preheat and be incubated 6061 aluminium alloy semi-solid state blanks 3 of completion and move into the TC4 titanium alloy tubes in mould, protect
Demonstrate,prove 6061 aluminium alloy semi-solid state blanks adjacent with TC4 titanium alloy tubes；
The rapid descending and 200KN that pressurizes of e, punch-pin, punch-pin downstream rate is 10mm/s, and the dwell time is 18s, makes semisolid
The aluminium alloy semi-solid state blank of humidity province completes die forging joint forming；Then, punch-pin 1 is up, is about to be closed by 6061 aluminium on push rod 7
The product 5 that gold and TC4 titanium alloys two sections of material are constituted is ejected together, takes out product 5.
Embodiment five：TA2 titanium alloys and 6061 aluminium alloys
A, TA2 titanium alloy pipes are processed into the TA2 titanium alloy tubes that size is φ 45mm × 5mm × h50mm；
B, TA2 titanium alloy tubes are put into mould preheated together, the temperature of preheating is 350 DEG C；
C, using metal molten stove by 6061 aluminum alloy meltings, smelting temperature is 730 DEG C, treats that 6061 aluminum alloy meltings are laggard
Row cooling, and apply electromagnetic agitation to it in 6061 aluminium alloy cooling procedures, it is 50% that 6061 aluminium alloys, which are converted to liquid fraction,
Semi solid slurry；
D, by 6061 aluminium alloy semi-solid slurries move into mould in TA2 titanium alloy tubes in；
E, punch-pin are rapid descending and carry out pressurization 190KN, and punch-pin downstream rate is 10mm/s, and the dwell time is 10s, make half
6061 aluminium alloy semi-solid slurries in solid state temperature area complete die forging joint forming；After die forging completion, punch-pin is up, push rod
On be about to 6061 aluminium alloys and the good product ejection of two kinds of material joint formings of TA2 titanium alloys, complete whole Semi solid bonding into
The process of shape integration.
Embodiment six：TC4 titanium alloys and 7075 aluminium alloys
A, TC4 titanium alloy pipes are processed into the TC4 titanium alloy tubes that size is φ 47mm × 5mm × h45mm；
B, TC4 titanium alloy tubes are put into mould preheated together, the temperature of preheating is 330 DEG C；
C, using metal molten stove by 7075 aluminum alloy meltings, smelting temperature is 720 DEG C, treats that 7075 aluminum alloy meltings are laggard
Row cooling, and apply electromagnetic agitation to it in 7075 aluminium alloy cooling procedures, it is 58% that 7075 aluminium alloys, which are converted to liquid fraction,
Semi solid slurry；
D, by 7075 aluminium alloy semi-solid slurries move into mould in TC4 titanium alloy tubes in；
E, punch-pin are rapid descending and carry out pressurization 180KN, and punch-pin downstream rate is 10mm/s, and the dwell time is 16s, make half
7075 aluminium alloy semi-solid slurries in solid state temperature area complete die forging joint forming；After die forging completion, punch-pin is up, push rod
On be about to 7075 aluminium alloys and the good product ejection of two kinds of material joint formings of TC4 titanium alloys, complete whole Semi solid bonding into
The process of shape integration.
Embodiment seven：TA7 titanium alloys and 2024 aluminium alloys
A, TA7 titanium alloy pipes are processed into the TA7 titanium alloy tubes that size is φ 65mm × 5mm × h55mm；
B, TA7 titanium alloy tubes are put into mould preheated together, the temperature of preheating is 300 DEG C；
C, using metal molten stove by 2024 aluminum alloy meltings, smelting temperature is 710 DEG C, treats that 2024 aluminum alloy meltings are laggard
Row cooling, and apply electromagnetic agitation to it in 2024 aluminium alloy cooling procedures, it is 52% that 2024 aluminium alloys, which are converted to liquid fraction,
Semi solid slurry；
D, by 2024 aluminium alloy semi-solid slurries move into mould in TA7 titanium alloy tubes in；
E, punch-pin are rapid descending and carry out pressurization 196KN, and punch-pin downstream rate is 10mm/s, and the dwell time is 10s, make half
2024 aluminium alloy semi-solid slurries in solid state temperature area complete die forging joint forming；After die forging completion, punch-pin is up, push rod
On be about to 2024 aluminium alloys and the good product ejection of two kinds of material joint formings of TA7 titanium alloys, complete whole Semi solid bonding into
The process of shape integration.
Embodiment eight：TB2 titanium alloys and 6063 aluminium alloys
A, TB2 titanium alloy pipes are processed into the TB2 titanium alloy tubes that size is φ 60mm × 4mm × h45mm；
B, TB2 titanium alloy tubes are put into mould preheated together, the temperature of preheating is 310 DEG C；
C, using metal molten stove by 6063 aluminum alloy meltings, smelting temperature is 700 DEG C, treats that 6063 aluminum alloy meltings are laggard
Row cooling, and apply electromagnetic agitation to it in 6063 aluminium alloy cooling procedures, it is 60% that 6063 aluminium alloys, which are converted to liquid fraction,
Semi solid slurry；
D, by 6063 aluminium alloy semi-solid slurries move into mould in TB2 titanium alloy tubes in；
E, punch-pin are rapid descending and carry out pressurization 200KN, and punch-pin downstream rate is 10mm/s, and the dwell time is 20s, make half
6063 aluminium alloy semi-solid slurries in solid state temperature area complete die forging joint forming；After die forging completion, punch-pin is up, push rod
On be about to 6063 aluminium alloys and the good product ejection of two kinds of material joint formings of TB2 titanium alloys, complete whole Semi solid bonding into
The process of shape integration.
Above-mentioned embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made in the range of technical scheme, also belong to this hair
Bright protection domain.
Claims (3)
1. a kind of method for shaping connecting integration with aluminium alloy semi-solid for titanium alloy, it is characterised in that it is divided into following
Step：
A, geomery and performance requirement according to part formed thereby, certain size and shape are prepared into by the titanium alloy of pre-connection
Titanium alloy tube (4)；
B, titanium alloy tube (4) is put into mould (2) preheated together, the temperature of preheating is 300-350 DEG C；
C, aluminium alloy is prepared into certain size and the aluminum alloy blank of shape, then added aluminum alloy blank using electromagnetic induction
Thermal is preheated to 600-630 DEG C, is incubated 15-25 minutes, enables aluminum alloy to blank and is converted into the aluminium conjunction that liquid fraction is 50-60%
Golden semi-solid blank (31)；
Or using metal molten stove by aluminum alloy melting, smelting temperature is 700-730 DEG C, cold after being carried out after aluminum alloy melting
But, and in aluminium alloy cooling procedure to it apply electromagnetic agitation, enable aluminum alloy to be converted to the aluminium alloy that liquid fraction is 50-60%
Semi solid slurry (32)；
D, it will preheat and be incubated the aluminium alloy semi-solid state blank (31) of completion or be moved into aluminium alloy semi-solid slurry (32)
In titanium alloy tube (4) in mould (2)；The aluminium alloy semi-solid state blank (31) is adjacent with titanium alloy tube (4)；
E, punch-pin (1) are rapid descending and are pressurizeed, and realize that die forging connects monolithic molding；After die forging completion, on punch-pin (1)
OK, it is about to aluminium alloy and good product (5) ejection of two kinds of material joint formings of titanium alloy on push rod (7), completes whole semisolid
The process of joint forming integration.
2. the method according to claim 1 for shaping connecting integration with aluminium alloy semi-solid for titanium alloy, its feature
It is：The downward pressure of the punch-pin (1) is 180-200kN, and descending speed is 10mm/s, and the dwell time is 10-20s.
3. the method according to claim 1 for shaping connecting integration with aluminium alloy semi-solid for titanium alloy, its feature
It is：The titanium alloy is any of TA2, TA7, TB2, TC4 titanium alloy；The aluminium alloy be 6063,6061,7075,
Any of 2024 aluminium alloys.
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| CN108746565B (en) * | 2018-06-05 | 2020-06-16 | 宁波海威汽车零件股份有限公司 | Preparation method of semi-solid slurry |
| CN109763006B (en) * | 2019-02-01 | 2020-08-11 | 哈尔滨工业大学（威海） | Forming and connecting integrated method for aluminum-magnesium composite component |
| CN109732054A (en) * | 2019-02-02 | 2019-05-10 | 东营源纳合金科技有限公司 | It is a kind of special type aluminium alloy semi-solid material preparation and automatic forming device |
| CN109807272B (en) * | 2019-02-18 | 2020-11-10 | 哈尔滨工业大学（威海） | Aluminum steel bimetal component thixotropic soft core composite forging forming method |
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