CN106424630A - Ultrasound-assisted semisolid die-casting molding device and method for complex thin-wall aluminum alloy pieces - Google Patents

Ultrasound-assisted semisolid die-casting molding device and method for complex thin-wall aluminum alloy pieces Download PDF

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Publication number
CN106424630A
CN106424630A CN201610700171.4A CN201610700171A CN106424630A CN 106424630 A CN106424630 A CN 106424630A CN 201610700171 A CN201610700171 A CN 201610700171A CN 106424630 A CN106424630 A CN 106424630A
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China
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mould
die
ultrasonic
dynamic model
die casting
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CN201610700171.4A
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CN106424630B (en
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梅德庆
于宗楷
姚喆赫
汪延成
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/007Semi-solid pressure die casting

Abstract

The invention discloses an ultrasound-assisted semisolid die-casting molding device and method for complex thin-wall aluminum alloy pieces. The ultrasound-assisted semisolid die-casting molding device comprises a die-casting machine, a die-casting die, an ultrasonic vibration system and a cooling system. The die-casting die is mounted on the die-casting machine. A press-jet assembly penetrates through a static die fixing plate and is connected with the die-casting die. The ultrasonic vibration system is connected to a movable die of the die-casting die and directly acts on the movable die for semisolid die-casting molding through ultrasonic assistance. The movable die is provided with the cooling system connected with the ultrasonic vibration system. By adoption of the ultrasound-assisted semisolid die-casting molding device and method, the solid phase agglomeration degree can be effectively lowered, the flowing capacity and mold-filling capacity of semisolid metal are improved, grains can be refined, the density of the castings is improved, the mechanical property and heat conductivity of the aluminum alloy castings are further improved, and a novel molding method is provided for the complex thin-wall aluminum alloy piece casting.

Description

Complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device and method
Technical field
The present invention relates to a kind of metal material semi-solid-state shaping field, especially relate to a kind of complex thin-wall class aluminium alloy Part ultrasonic wave added semisolid pressure casting shaped device and method.
Background technology
In recent years, with the fast development of information technology and communication industry, complex thin-wall class aluminium alloy castings leads in electronics There is widespread demand, for example in news industry:Phone housing, LED lamp heat sink, communication base station housing etc., as shown in Figure 1.Such Part generally has complicated cavity structure and thin-walled feature, and its wall thickness is usual<4.0mm, regional area wall thickness<0.5mm.Additionally, Such aluminium alloy castings is often made up of multiple big planes or curved surface, is difficult to using traditional casting forming or machining mode Realize.
Currently, the conventional manufacturing process of thin wall aluminium alloy castings casts for usual pressure.Usual pressure casting technique exists Aluminium alloy castings occupies leading position in producing, and accounts for the 60% of aluminium alloy castings total amount, this technique can also be used for part thin-walled The figuration manufacture of foundry goods.However, on the basis of strict control extrusion process, the die casting finished product of current thin wall aluminium alloy castings Rate is about 80%, and common deficiency includes owing casting, turning cracking, tissue looseness, cold shut and decorative pattern etc., and these defects cause in a large number The wasting of resources and economic loss.Due to the limitation of the defect that is also easy to produce in thin wall foundry goods and extrusion process, therefore, Usual pressure casting technique is difficult to meet feature wall thickness<The manufacture processing of the complex thin-wall class aluminium alloy castings of 1.0mm.
For improving aluminum alloy die-casting technological, improving the mechanical property of aluminium alloy castings, Semi-solid Thixo-Casting technique is near Extensive concern is received over year.Semi-Solid Metals Forming is a kind of technical process between casting and forging, be for solid, Semi-molten that liquid coexists or semi-solid metal form the general name of the process of processing, main include thixotropic forming and stream Become and shape two kinds of techniques.Semisolid metal blank has certain solid-to-liquid ratio, and liquid metal phase specific viscosity is higher, can during shaping Avoid the problems such as splash, turbulent flow and volume gas, drip molding is better than liquid cast properties;It is compared with solid forging, low resistance of deformation Make to be more likely formed minutiae structure with good mobility, and shaping load is relatively low.Therefore, and traditional forming technology phase Than, Semi-Solid Metals Forming preferably combines the advantage of solid die forging and liquid die casting, can be mass complex-shaped, High-performance and high-precision miniature parts.
During Semi-Solid Metals Forming, metal material flow stress is not only directly affected by solid rate, is also subject to Appreciable impact to solid agglomerate degree.When solid agglomerate degree is higher, semi-solid-state metal apparent viscosity and stream will be significantly improved Dynamic stress, thus reducing its filling capacity for thin-walled die cavity, limits further should of aluminium alloy semi-solid die-casting technique With and promote.
Chinese invention patent (application number 200810058112.7) discloses a kind of hypereutectic aluminum-silicon alloy casting semisolid Rheo-extrusion casting technique and device.This device adopts extrusion casint, and the semisolid realizing transcocrystallized Al-Si alloy product is continuous Rheo-extrusion casts, and improves the utilization rate of material, reduces allowance, but it yet suffers from, and plastic force is big, forming effect Bad the problems such as, is it is difficult to meet the molding demand of complex thin-wall class part.
Chinese invention patent (application number 201410087101.7) discloses a kind of silumin package casing semisolid Progressive forming method.This invention utilizes liquid phase and solid phase segregation and detached feature in semi-solid state extrusion shaping, preparation processing High-performance thin-wall complicated shape silumin electronic package shell, but this invented technology makes and mostly is simple housing part, difficult Processed with the complex thin-wall class aluminium alloy castings meeting high-aspect-ratio.
Content of the invention
The invention aims to the solid agglomerate degree in reduction semi-solid-state metal, improve thin-walled eka-aluminum further and close The casting forming performance of golden foundry goods and quality are it is proposed that a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting molding Device and method, introduces ultrasonic energy field in press casting procedure, can effectively reduce solid agglomerate degree, and then improves semi-solid-state metal Fluid ability and mold-filling capacity, reduce the frictional resistance of semi-solid-state metal and cavity wall, supersonic vibration simultaneously can crystal grain thinning, Improve the forming quality of foundry goods.
The technical solution adopted for the present invention to solve the technical problems is:
First, a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device:
The present invention includes die casting machine, die casting, ultrasonic vibration system and cooling system, and die casting is arranged on die casting Machine, injection assembly is connected through quiet mould fixed plate with die casting, the dynamic model of die casting is installed and connects ultrasonic vibration system, Ultrasonic vibration system directly acts on dynamic model and carries out semisolid pressure casting molding with ultrasonic wave added, and dynamic model is provided with and ultrasonic vibration system The cooling system connecting.
Described die casting machine includes base, injection assembly, quiet mould fixed plate, dynamic mould fixing plate, die casting machine guide pillar and die casting Machine guide rail, injection assembly is fixedly connected with quiet mould fixed plate, and quiet mould fixed plate is fixed on base, and dynamic mould fixing plate can level move It is movably arranged on base dynamicly;, on the base of quiet mould fixed plate side, dynamic mould fixing plate bottom is embedding for die casting machine guide rails assembling Enter die casting machine guide rail;Quiet mould fixed plate both sides are fixedly connected with the die casting machine guide pillar of level, and die casting machine guide pillar is fixed through dynamic model In the middle part of plate, die casting machine guide rail and die casting machine guide pillar are parallel;Dynamic mould fixing plate moves along die casting machine guide rail and die casting machine guide pillar level Dynamic.
Described die casting includes dynamic model and quiet mould, and quiet mould and dynamic model are all separately fixed at quiet mould admittedly by Anchor plate kit In fixed board and dynamic mould fixing plate, quiet mould fixed plate end face is connected with injection assembly, and quiet mould is provided with quiet mould sprue gate, quiet mould cast Mouth is connected with the outlet of injection assembly and communicates.
Described quiet mould includes the first bolt, sprue bush, quiet mould mould bases, quiet mould core rod and mold guide sleeve, quiet mould mould bases one End be fixed in quiet mould fixed plate by Anchor plate kit, the corner of the quiet mould mould bases other end has shoulder hole, shoulder hole built with Guide-post of die-set for dynamic model stretches into the mold guide sleeve being connected;It is inlaid with quiet mould core rod, by first in the middle of quiet mould mould bases Bolt is fixed with quiet mould mould bases, has through hole, be cased with sprue bush in through hole in the middle part of quiet mould core rod and quiet mould mould bases.
Described dynamic model includes dynamic model mould bases, dynamic model core rod, guide-post of die-set, dynamic model gripper shoe, dynamic model support block and the second spiral shell Bolt, is mutually fixedly connected by the second bolt of corner between dynamic model mould bases, dynamic model gripper shoe and dynamic model support block, dynamic model mould bases successively Centre is inlayed and is fixed with dynamic model core rod, and the corner of dynamic model gripper shoe end face is provided with guide-post of die-set, and guide-post of die-set passes through dynamic model mould Frame extend in the mold guide sleeve of quiet mould mould bases of described quiet mould, and the dynamic model gripper shoe other end is installed with supersonic vibration system System.
Described ultrasonic vibration system includes ultrasonic generator and ultrasonic vibrator, and ultrasonic vibrator includes being fixedly mounted on Ultrasonic transducer on ring flange and ultrasonic amplitude transformer, the corner of ring flange is fixedly attached to institute by connecting rod and the first nut State dynamic model gripper shoe end face, the input of ultrasonic amplitude transformer is fixedly connected on ring flange by bolt group and passes through ring flange Centre bore, ultrasonic amplitude transformer outfan extend in dynamic model core rod through described dynamic model gripper shoe;Ultrasonic transducer passes through ultrasonic Connecting rod is fixed on the end face of ultrasonic amplitude transformer input, is connected between ultrasonic transducer and ultrasonic amplitude transformer input end face Piezoelectric ceramics;Ultrasonic connection rod end surface has outlet, and the node location of ultrasonic amplitude transformer is provided with water inlet, outlet and water inlet Mouth is connected with water-cooling system.
Described injection assembly includes injection rod and injection pipeline, and injection rod extend in injection pipeline one end, injection pipe Road side wall connects formation injection chamber in charging aperture, injection pipeline, and the injection pipeline other end is connected through quiet mould fixed plate with quiet mould, The quiet mould sprue gate on quiet mould is made to export concentric alignment with injection chamber.
Because press casting procedure belongs to High Temperature High Pressure, in order to prevent ultrasonic transducer due to overheated and damage, in ultrasonic system Upper setting water-cooling system 12.Described water-cooling system includes water pump and water tank, and water inlet connects through water pump and water tank, and outlet is straight Connect and be connected with water tank.
Apparatus of the present invention apply ultrasound wave by above-mentioned ultrasonic vibration system on die casting, by injection assembly in pressure Penetrate intracavity to be processed, not only can improve mobility and the cavity filling energy of aluminium alloy semi-solid melt, die casting can also be improved Mechanical property.
2nd, a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting forming method:
1) semi-solid metal slurry preparation:Using pulping equipment, stock is heated to 590 DEG C, and is protected in holding furnace Temperature storage;
2) die casting is preheated to 150~250 DEG C and surface spraying releasing agent, then carries out matched moulds;
3) described ultrasonic vibration system and described cooling system are opened;
4) contained from holding furnace using heat preserving quantitative cup and taken semi solid slurry, after pouring into injecting cavity, injection rod with 1~ The injection speed of 5m/s carries out die casting with the pressure than pressure 40MPa, then pressurize 5~10s, ultrasonic vibration system in press casting procedure With cooling system continuous firing;
5) mold pickup after the completion of die casting.
The power that described ultrasonic vibration system applies supersonic vibration is 200W, frequency is 20KHz and amplitude is 10 μm.
Described complex thin-wall class aluminium alloy castings is characterized the aluminium alloy castings of a size of 0.5mm~1.5mm wall thickness.
The invention has the advantages that:
1st, ultrasound wave is incorporated in the aluminium alloy semi-solid die cast course of processing present invention, by connecting rod combined techniqueses Blue structure is by direct for ultrasonic system and dynamic model core contact, and keeps certain precompression it is ensured that ultrasound wave is with maximum efficiency It is transmitted to semisolid solution,
On the one hand effectively reduce solid agglomerate degree using ultrasonic activation, and then improve the fluid ability of semi-solid-state metal And mold-filling capacity, reduce the frictional resistance of semi-solid-state metal and cavity wall,
Another aspect supersonic vibration also can crystal grain thinning, improve the consistency of foundry goods, thus further aluminium alloy castings Mechanical property and heat conductivility;
2nd, ultrasonic generator can perform a scan coupling automatically, realize different moulds are performed a scan and Join, improve the adaptability of system;
3rd, cooling system is arranged on horn node location, has directly separated mold heat conduction, improve cooling effect Rate, does not produce impact to ultrasonic system operating frequency simultaneously.
Brief description
Fig. 1 is the overall assembling structure schematic diagram of the present invention.
Fig. 2 is the schematic diagram of matched moulds process of the present invention.
Fig. 3 is the schematic diagram of semi solid slurry casting process of the present invention.
Fig. 4 is the schematic diagram of die casting pressure maintaining period of the present invention.
Fig. 5 is the schematic diagram that the present invention molds pickup process.
Fig. 6 is the quiet mode assembling structure figure of the present invention.
Fig. 7 is the dynamic model assembly structure figure of the present invention.
Fig. 8 is the ultrasonic system assembly structure figure of the present invention.
Fig. 9 is the Anchor plate kit schematic diagram of the present invention.
In figure:1. injection rod, 2. charging aperture, 3. quiet mould fixed plate, 4. quiet mould, 5. dynamic model, 6. ultrasonic vibrator, 7. dynamic model Fixed plate, 8. Anchor plate kit, 9. die casting machine guide pillar, 10. die casting machine guide rail, 11. ultrasonic generators, 12. water-cooling systems, 13. bottoms Seat, 14. semi-solid melts, 15. foundry goods, 16. first bolts, 17. sprue bush, 18. quiet mould mould bases, 19. quiet mould core rods, 20. moulds Tool guide pin bushing, 21. dynamic model mould bases, 22. dynamic model core rods, 23. guide-post of die-set, 24. dynamic model gripper shoes, 25. dynamic model support blocks, 26. second Bolt, 27. ultrasonic amplitude transformers, 28. connecting screw rods, 29. water inlets, 30. ring flanges, 31. first nuts, 32. piezoelectric ceramics, 33. ultrasonic transducers, 34. outlets, 35. ultrasonic connecting rods, 36. bolt groups, 37. clamp blocks, 38. second nuts, 39. slide rails Bolt, 40. the 3rd bolts.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention includes base 13, die casting machine, die casting 4,5, ultrasonic vibration system and cooling system 12, die casting machine is arranged on base 13, and die casting 4,5 is arranged on die casting machine, injection assembly be arranged on die casting machine and with pressure Casting mould 4,5 connects, and the dynamic model 5 of die casting 4,5 is installed and connects ultrasonic vibration system, and ultrasonic vibration system directly acts on Dynamic model 5 carries out semisolid pressure casting molding with ultrasonic wave added, and dynamic model 5 is provided with the cooling system 12 being connected with ultrasonic vibration system.
As shown in figure 1, die casting machine includes quiet mould fixed plate 3, dynamic mould fixing plate 7, die casting machine guide pillar 9 and die casting machine guide rail 10, quiet mould fixed plate 3 is fixed on base 13, and dynamic mould fixing plate 7 is movably arranged on base 13 horizontally moveablely;Die casting machine Guide rail 10 is arranged on the base 13 of quiet mould fixed plate 3 side, and dynamic mould fixing plate 7 bottom embeds die casting machine guide rail 10;Quiet mould is solid Fixed board 3 both sides are fixedly connected with the die casting machine guide pillar 9 of level, and die casting machine guide pillar 9 passes through in the middle part of dynamic mould fixing plate 7, and die casting machine is led Rail 10 and die casting machine guide pillar 9 are parallel;Dynamic mould fixing plate 7 moves horizontally along die casting machine guide rail 10 and die casting machine guide pillar 9.
Die casting includes dynamic model 5 and quiet mould 4, and quiet mould 4 and dynamic model 5 are all separately fixed at quiet mould admittedly by Anchor plate kit 8 In fixed board 3 and dynamic mould fixing plate 7, quiet mould fixed plate 3 end face is connected with injection assembly, and quiet mould 4 is provided with quiet mould sprue gate, quiet mould Sprue gate is connected with the outlet of injection assembly and communicates.
As shown in fig. 6, quiet mould 4 includes the first bolt 16, sprue bush 17, quiet mould mould bases 18, quiet mould core rod 19 and mould leading Set 20, quiet mould mould bases 18 one end is fixed in quiet mould fixed plate 3 by the first bolt 16 of corner, quiet mould mould bases 18 other end Corner has blind hole, and blind hole stretches into, built with the guide-post of die-set 23 for dynamic model 5, the mold guide sleeve 20 being connected;Quiet mould mould bases Inlay in the middle of 18 and be fixed with quiet mould core rod 19, in the middle part of quiet mould core rod 19, have through hole, in through hole, be cased with sprue bush 17, sprue bush 17 One end is quiet mould sprue gate.
As shown in fig. 7, dynamic model 5 includes dynamic model mould bases 21, dynamic model core rod 22, guide-post of die-set 23, dynamic model gripper shoe 24, dynamic model Support block 25 and the second bolt 26, pass through the second bolt of corner between dynamic model mould bases 21, dynamic model gripper shoe 24 and dynamic model support block 25 26 are mutually fixedly connected successively, inlay and be fixed with dynamic model core rod 22 in the middle of dynamic model mould bases 21, the corner of dynamic model gripper shoe 24 end face It is provided with guide-post of die-set 23, guide-post of die-set 23 extend into the mold guide sleeve of the quiet mould mould bases 18 of described quiet mould 4 through dynamic model mould bases 21 In 20, dynamic model gripper shoe 24 other end is installed with the ultrasonic vibrator 6 of ultrasonic vibration system, ultrasonic vibrator 6 is direct Act on dynamic model core rod 22.
As shown in figure 8, ultrasonic vibration system includes ultrasonic generator 11 and ultrasonic vibrator 6, ultrasonic vibrator 6 includes solid Dingan County is contained in ultrasonic transducer 33 and ultrasonic amplitude transformer 27 on ring flange 30, and connecting rod 28 and the are passed through in the corner of ring flange 30 One nut 31 is fixedly attached to described dynamic model gripper shoe 24 end face, and the input of ultrasonic amplitude transformer 27 passes through bolt group 36 to be fixed even It is connected on ring flange 30 and passes through the centre bore of ring flange 30, ultrasonic amplitude transformer 27 outfan is stretched through described dynamic model gripper shoe 24 Enter in dynamic model core rod 22;
Ultrasonic transducer 33 is fixed on the end face of ultrasonic amplitude transformer 27 input, ultrasonic transducer by ultrasonic connecting rod 35 It is connected with piezoelectric ceramics 32 between 33 and ultrasonic amplitude transformer 27 input end face;Ultrasonic connecting rod 35 end face has outlet 34, The node location of ultrasonic amplitude transformer 27 is provided with water inlet 29, and outlet 34 and water inlet 29 are connected with water-cooling system 12.
Ultrasonic generator 11 adopts automatic frequence scanning to design, and is suitable for different moulds.Ultrasonic transducer 33 is piezoelectric type Transducer, piezoceramic material is PZT-4, described ultrasonic generator 11, using the topology using full-bridge inverting, using DSP as The control core of system, realizes automatic frequence scanning it is ensured that transducer can be exported with maximum output, to mate difference Mould.
As shown in figure 9, Anchor plate kit 8 includes clamp block 37, the second nut 38, slide rail bolt 39 and the 3rd bolt 40, pressure Bar-shaped trough is had, the second nut 38 passes through bar-shaped trough connecting sliding rail bolt 39, and it is solid that slide rail bolt 39 is embedded into quiet mould on plate 37 In the groove of fixed board 3 or dynamic mould fixing plate 7, clamp block 37 one end is embedded into the dynamic model support block 25 side wall bar shaped of described dynamic model 5 In the quiet mould mould bases 18 side wall bar-shaped trough of groove or described quiet mould 4, clamp block 37 other end passes through the 3rd bolt 40 head and supports High to the length matched mold side wall bar-shaped trough in quiet mould fixed plate 3 or dynamic mould fixing plate 7, adjusting the 3rd bolt 40 elongation Spend, then screw the second nut 38 and compressed.
Injection assembly includes injection rod 1 and injection pipeline, and injection rod 1 extend in injection pipeline one end, injection pipe side Wall connects formation injection chamber in charging aperture 2, injection pipeline, and the injection pipeline other end is connected through quiet mould fixed plate 3 with quiet mould 4, The quiet mould sprue gate on quiet mould 4 is made to export concentric alignment with injection chamber.
Water-cooling system 12 includes water pump and water tank, and water inlet 29 connects through water pump and water tank, and outlet 34 is directly and water tank Connect.Cooling system 12 adopts water-cooling pattern, has with respect to types of cooling such as air-cooled, oil coolings, and cooling effectiveness is high, and device is easy Advantage.Cooling system 12 is arranged on ultrasonic amplitude transformer 27, has effectively intercepted die casting heat and has passed toward ultrasonic transducer 32 Pass, water inlet, in the design of node location, reduces the impact to horn frequency simultaneously.
The specific implementation process of the present invention is as follows:
1) semi-solid metal slurry preparation:Using pulping equipment, the stock of Aluminum Alloy A356 is heated to 590 DEG C, and is protecting Carry out insulation storage in warm stove;
2) as shown in Fig. 2 the die casting of dynamic model and quiet mould is preheated to 150~250 DEG C and surface spraying releasing agent, so Carry out accurate matched moulds with the help of guide-post of die-set 23 and mold guide sleeve 20 afterwards;
3) described ultrasonic vibration system and described cooling system are opened, the power applying supersonic vibration is 200W, frequency is 20KHz and amplitude are 10 μm.
4) as shown in Figure 3, Figure 4, contained from holding furnace using heat preserving quantitative cup and taken semi solid slurry, poured into injecting cavity Afterwards, when semi-solid melt 14 is completely into injecting cavity, injection rod is entered with the pressure than pressure 40MPa with the injection speed of 1~5m/s Row die casting, then pressurize 5~10s, ultrasonic vibration system and cooling system continuous firing in press casting procedure;
5) as shown in figure 5, opening mould, removing the good foundry goods of die casting 15, and being ready for die casting next time.
Apparatus of the present invention, by ultrasonic activation is directly acted on die casting core rod, overcome conventional pressure casting method institute The forming quality existing not high it is difficult to the problems such as produce the complex thin-wall class part of high performance requirements, solve advanced wide at present The problem existing at aspects such as casting quality, production efficiencys than complex thin-wall class aluminium alloy castings forming technique and limitation.

Claims (9)

1. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device it is characterised in that:Including die casting machine, Die casting (4,5), ultrasonic vibration system and cooling system (12), die casting (4,5) is arranged on die casting machine, die casting The upper installation of the dynamic model (5) of (4,5) connects ultrasonic vibration system, and ultrasonic vibration system directly acts on dynamic model (5) with ultrasonic wave added Carry out semisolid pressure casting molding, dynamic model (5) is provided with the cooling system (12) being connected with ultrasonic vibration system.
2. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described die casting machine include quiet mould fixed plate (3), dynamic mould fixing plate (7), die casting machine guide pillar (9), base (13), Injection assembly and die casting machine guide rail (10), injection assembly is connected with die casting (4,5), injection assembly and quiet mould fixed plate (3) It is fixedly connected, quiet mould fixed plate (3) is fixed on base (13), and dynamic mould fixing plate (7) is movably arranged on bottom horizontally moveablely On seat (13);Die casting machine guide rail (10) is arranged on the base (13) of quiet mould fixed plate (3) side, dynamic mould fixing plate (7) bottom Embedded die casting machine guide rail (10);Quiet mould fixed plate (3) both sides are fixedly connected with the die casting machine guide pillar (9) of level, die casting machine guide pillar (9) pass through in the middle part of dynamic mould fixing plate (7), die casting machine guide rail (10) and die casting machine guide pillar (9) are parallel;Dynamic mould fixing plate (7) edge Die casting machine guide rail (10) and die casting machine guide pillar (9) move horizontally.
3. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described die casting includes dynamic model (5) and quiet mould (4), and quiet mould (4) and dynamic model (5) are all by Anchor plate kit (8) It is separately fixed on quiet mould fixed plate (3) and dynamic mould fixing plate (7), quiet mould fixed plate (3) end face is connected with injection assembly, quiet mould (4) it is provided with quiet mould sprue gate, quiet mould sprue gate is connected with the outlet of injection assembly and communicates.
4. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described quiet mould (4) include the first bolt (16), sprue bush (17), quiet mould mould bases (18), quiet mould core rod (19) and Mold guide sleeve (20), quiet mould mould bases (18) one end is fixed on quiet mould fixed plate (3) by Anchor plate kit, and quiet mould mould bases (18) is another The corner of one end has shoulder hole, and shoulder hole stretches into, built with the guide-post of die-set (23) for dynamic model (5), the mould being connected Guide pin bushing (20);It is inlaid with quiet mould core rod (19) in the middle of quiet mould mould bases (18), fixed with quiet mould mould bases by the first bolt (16), quiet Have through hole in the middle part of mould core rod (19) and quiet mould mould bases (18), in through hole, be cased with sprue bush (17).
Described dynamic model (5) includes dynamic model mould bases (21), dynamic model core rod (22), guide-post of die-set (23), dynamic model gripper shoe (24), moves Mould support block (25) and the second bolt (26), pass through four between dynamic model mould bases (21), dynamic model gripper shoe (24) and dynamic model support block (25) Second bolt (26) at angle is mutually fixedly connected successively, inlays and is fixed with dynamic model core rod (22), dynamic model props up in the middle of dynamic model mould bases (21) The corner of fagging (24) end face is provided with guide-post of die-set (23), and guide-post of die-set (23) extend into described quiet through dynamic model mould bases (21) In the mold guide sleeve (20) of quiet mould mould bases (18) of mould (4), dynamic model gripper shoe (24) other end is installed with supersonic vibration System.
5. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described ultrasonic vibration system includes ultrasonic generator (11) and ultrasonic vibrator (6), and ultrasonic vibrator (6) wraps Include the ultrasonic transducer (33) being fixedly mounted on ring flange (30) and ultrasonic amplitude transformer (27), the corner of ring flange (30) is passed through Connecting rod (28) and the first nut (31) are fixedly attached to described dynamic model gripper shoe (24) end face, the input of ultrasonic amplitude transformer (27) End is fixedly connected on ring flange (30) by bolt group (36) and passes through the centre bore of ring flange (30), ultrasonic amplitude transformer (27) Outfan extend in dynamic model core rod (22) through described dynamic model gripper shoe (24);
Ultrasonic transducer (33) is fixed on the end face of ultrasonic amplitude transformer (27) input, ultrasonic transduction by ultrasonic connecting rod (35) It is connected with piezoelectric ceramics (32) between device (33) and ultrasonic amplitude transformer (27) input end face;Ultrasonic connecting rod (35) end face has Outlet (34), the node location of ultrasonic amplitude transformer (27) is provided with water inlet (29), outlet (34) and water inlet (29) and water Cooling system (12) connects.
6. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described injection assembly includes injection rod (1) and injection pipeline, and injection rod (1) extend in injection pipeline one end, Injection pipe side wall connects formation injection chamber in charging aperture (2), injection pipeline, and the injection pipeline other end passes through quiet mould fixed plate (3) it is connected with quiet mould (4) so that the quiet mould sprue gate on quiet mould (4) exports concentric alignment with injection chamber.
7. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting shaped device according to claim 1, its It is characterised by:Described water-cooling system (12) includes water pump and water tank, and water inlet (29) connects through water pump and water tank, outlet (34) directly it is connected with water tank.
8. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting forming method is it is characterised in that adopt claim The arbitrary described device of 1-7, comprises the following steps:
(1) semi-solid metal slurry preparation:Using pulping equipment, stock is heated to 590 DEG C, and is incubated in holding furnace Storage;
(2) die casting is preheated to 150~250 DEG C and surface spraying releasing agent, then carries out matched moulds;
(3) described ultrasonic vibration system and described cooling system are opened;
(4) contained from holding furnace using heat preserving quantitative cup and taken semi solid slurry, after pouring into injecting cavity, injection rod is with 1~5m/s Injection speed die casting is carried out with the pressure than pressure 40MPa, then pressurize 5~10s, ultrasonic vibration system and cold in press casting procedure But systems stay work;
(5) mold pickup after the completion of die casting.
9. a kind of complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting forming method according to claim 8, its It is characterised by:The power that described ultrasonic vibration system applies supersonic vibration is 200W, frequency is 20KHz and amplitude is 10 μm.
CN201610700171.4A 2016-08-19 2016-08-19 Complex thin-wall class Al-alloy parts ultrasonic wave added semisolid pressure casting molding machine and method Expired - Fee Related CN106424630B (en)

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Cited By (7)

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