CN104152727B - A kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method - Google Patents

A kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method Download PDF

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CN104152727B
CN104152727B CN201410333711.0A CN201410333711A CN104152727B CN 104152727 B CN104152727 B CN 104152727B CN 201410333711 A CN201410333711 A CN 201410333711A CN 104152727 B CN104152727 B CN 104152727B
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composite
particle
whipping appts
plumbago crucible
resistance furnace
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CN104152727A (en
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赵海东
朱刚
胡启耀
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South China University of Technology SCUT
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Abstract

The invention discloses a kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method, this device comprises hoisting appliance, resistance furnace, fixed leg, support mechanism, whipping appts, particle transport device, bell, opening for feed, inlet pipe, plumbago crucible, Stainless Steel Crucible; Realize quantitatively conveying and add enhanced granule, realize particle enhanced aluminum-based composite material stirring casting prepared by gas shield and automatization and prepare.Apparatus of the present invention smart structural design, easy and simple to handle, level of automation is high, good stability.By gas shield, decrease air-breathing and the surface oxidation of stirring casting preparation process melt; Adopt particle transport device, achieve quantitative conveying and the interpolation of enhanced granule; Adopt lifting device and whipping appts, realize the fixing quantity of mixing position and stirring velocity, be conducive to the performance and the preparation efficiency that improve matrix material.

Description

A kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method
Technical field
The present invention relates to metal-base composites stirring casting preparation facilities, particularly relate to a kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method.
Background technology
Particle enhanced aluminum-based composite material (Particulate-reinforcedAluminumMatrixComposites, be called for short PAMCs) because of with low cost, preparation is simple, material isotropic is good, realizing different performance by controlling the enhanced granule kind, content etc. of adding, obtaining in recent years and developing faster.At present, PAMCs is mainly used in the fields such as land traffic, Electronic Packaging, aerospace and capital construction.
The preparation method of particle enhanced aluminum-based composite material mainly contains powder metallurgic method, stirring casting method, spray deposition, vacuum pressure infiltration method etc.Wherein owing to having, technique is simple, facility investment is few, production cost is low, wide adaptability, the advantage such as can be mass-produced for stirring casting method, and is subject to showing great attention to of investigator, and has the report of some practical applications.But stirring casting method is prepared particle enhanced aluminum-based composite material and is not yet obtained mass-producing application, and it is one of major reason that the preparation facilities of high quality, high-level efficiency, automatization lacks.
According to the microstructure of document stirring casting SiCp/2024 aluminum matrix composite and mechanical property (China YouSe Acta Metallurgica Sinica) and Effectsofreinforcementdistributiononlowandhightemperatur etensilepropertiesofAl356/SiCpcastcompositesproducedbyan ovelreinforcementdispersiontechnique (MaterialsScienceandEngineeringA) known, existing particle enhanced aluminum-based composite material stirring casting preparation, enhanced granule is added in matrix alloy melt by main employing funnel method, exist following not enough:
1) continuous and quantitative adopting funnel method cannot realize enhanced granule adds, and makes Composite Melt preparation process stability lower, causes particle skewness in the melt, reduce the performance of matrix material;
2) under atmospheric environment, Composite Melt is prepared, utilize the agitator of high speed rotating to stir melt composition whirlpool and suck enhanced granule, be easily involved in a large amount of gas, increase the gas content of Composite Melt, and the easy adsorption particle of gas is assembled, cause size distribution uneven; Under being exposed to atmospheric environment for a long time, bath surface is oxidizable simultaneously, oxide film content in matrix material is increased, reduces the quality and performance of matrix material;
3) in preparation process, stirring operation, conveying and interpolation particle etc. are realized by artificial and lacked interlock, preparation efficiency and stability low.
Therefore, in the urgent need to develop a kind of particle transport speed controlled, can gas shield, high-efficient automatic particle enhanced aluminum-based composite material stirring casting preparation facilities.
Summary of the invention
The object of the invention is to the deficiency overcoming existing particle enhanced aluminum-based composite material stirring casting preparation facilities, a kind of particle enhanced aluminum-based composite material stirring casting preparation facilities and preparation method are provided; Realize the quantitative continuous and automatic supply of enhanced granule and gas shield.
The present invention is achieved through the following technical solutions:
A kind of particle enhanced aluminum-based composite material stirring casting preparation facilities, this device comprises hoisting appliance 1, resistance furnace 2, fixed leg 3, support mechanism 4, whipping appts 6, particle transport device 7 bell 9, opening for feed 10, inlet pipe 11, plumbago crucible 12, Stainless Steel Crucible 13;
Stainless Steel Crucible 13 is placed in resistance furnace 2; In the enclosed space that the bell 9 that plumbago crucible 12 is placed in Stainless Steel Crucible 13 and resistance furnace 2 is formed, rare gas element is entered by inlet pipe 11, and the gap between the agitator arm and cover plate 5 of whipping appts 6 is flowed out; Support mechanism 4 is fixed on the outer side wall of resistance furnace 2; Whipping appts 6 is arranged on support mechanism 4, and support mechanism 4 is movably arranged on the hoisting appliance 1 of resistance furnace 2 side; Particle transport device 7 is arranged on the side, top of resistance furnace 2; The agitating vane of whipping appts 6 stretches into plumbago crucible 12 inside by agitator arm;
The end of described whipping appts 6 agitator arm is provided with agitating vane, and it is inner that agitating vane stretches into plumbago crucible 12 by agitator arm.
Described particle transport device 7 comprises support 7-1, discharge port 7-2, bearing 7-3, rotor 7-4, rotating door mechanism 7-5, feed bin 7-6, retaining plate 7-7, connecting joint 7-8, electric motor 7-9;
Discharge port 7-2 is placed in the top of plumbago crucible 12; Retaining plate 7-7 and rotating door mechanism 7-5 is arranged on support 7-1, electric motor 7-9 is arranged on retaining plate, the rotor 7-4 of electric motor 7-9 is connected with rotating door mechanism 7-5 with connecting joint 7-8 respectively by bearing 7-3, and feed bin 7-6 is arranged on rotating door mechanism 7-5 top.
The refractory brick 14 for supporting plumbago crucible 12 is provided with in the inner bottom part of Stainless Steel Crucible 13, the below of plumbago crucible 12.
Bell 9 is provided with the cover plate 5 stretching into mouth for covering agitator arm.
Bell 9 has the viewing window 8 for observing plumbago crucible 12 inside.
The method that employing said apparatus prepares particle enhanced aluminum-based composite material is as follows:
Step one: add aluminium alloy and the fusing that heats up; With commercial solid refined agent refining degasification, slagging-off in plumbago crucible 12 at the temperature of 710 DEG C; Aluminium alloy melt after refining is cooled to 640 DEG C and is incubated;
Step 2: open gas shield device, argon gas enters enclosed space by inlet pipe 11, makes aluminium alloy melt be under argon gas atmosphere protection;
Step 3: rotate support mechanism 4, coordinates fixed leg 3 to make the agitating vane of whipping appts 6 aim at plumbago crucible 12 center; Start lifting device 1, agitating vane is dropped to below aluminium alloy melt surface 35mm;
Step 4: start whipping appts 6, regulates the velocity of rotation of whipping appts 6, makes aluminium alloy melt surface form stable vortex;
Step 5: joined by enhanced granule 4-1 in feed bin 7-6, actuating motor 7-9, regulates velocity of rotation, makes rotating door mechanism 7-5 particle transport speed be 40g/min;
After step 6: enhanced granule 4-1 adds, close particle transport device 7, close whipping appts 6, start lifting device 1, regulate the agitating vane of agitator arm to Composite Melt surface; Regulating resistance stove 2 makes Composite Melt be warming up to 710 DEG C and be incubated;
Step 7: start lifting device 1, drops to 40mm bottom distance plumbago crucible 12 by the agitating vane of agitator arm; Start whipping appts 6, regulate stirring velocity, promote that enhanced granule 4-1 is evenly distributed in aluminium alloy melt;
Step 8: after particle 4-1 homogenizing terminates, starts lifting device 1, is risen to by whipping appts 6 on resistance furnace 2 bell 9; Support mechanism 4 half-twist; Cover cover plate 5; Melt temperature remains on 710 DEG C, prepared by particle enhanced aluminum-based composite material.
The present invention, relative to prior art, has following advantage and effect:
Present invention achieves quantitative conveying and the interpolation of enhanced granule, improve stability and efficiency prepared by Composite Melt, be conducive to being uniformly distributed of particle, improve the Performance and quality of matrix material.Particle transport device utilizes rotary door principle, by rotary door size and control electric motor 7-9 rotating speed, controls particle from discharge port output speed.
The present invention is for realizing gas shield, adopt the combination (plumbago crucible and Stainless Steel Crucible) of two crucible, in the enclosed space that the bell 9 that plumbago crucible 12 is placed in Stainless Steel Crucible 13 and resistance furnace 2 is formed, rare gas element is entered by inlet pipe 11, and the gap between the agitator arm and cover plate 5 of whipping appts 6 is flowed out; Without the need to being placed in realize protection of inert gas in enclosed space by whole device, under the condition guaranteeing protection of inert gas effect, reduce manufacture difficulty and the cost of equipment.
The present invention achieves gas shield in preparation process; decrease air-breathing and the surface oxidation of this process melt; reduce the content of gas and oxide film in melt, and gas-absorbing particulate and the particle agglomeration caused in melt, improve the quality and performance of Composite Melt.
Present invention achieves particle enhanced aluminum-based composite material and stir preparation facilities; collection resistance furnace, lifting device, whipping appts, particle transport device, gas shield etc. five major part set and Automated condtrol, can high-level efficiency, stably prepare particle enhanced aluminum-based composite material.
Employing electric motor, rotating door mechanism realize the quantitative conveying of enhanced granule; The lifting device that apparatus is driven by electric threaded shaft and the whipping appts by motor drive, realize mixing position, stirring velocity, particle transport and interpolation speed, the automated operation of gas shield and control by overall system control.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is particle transport apparatus structure schematic diagram in Fig. 1.
Fig. 3 is part sectioned view in Fig. 2.
Embodiment
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1 to Figure 3.The invention discloses a kind of particle enhanced aluminum-based composite material stirring casting preparation facilities, this device comprises hoisting appliance 1, resistance furnace 2, fixed leg 3, support mechanism 4, whipping appts 6, particle transport device 7 bell 9, opening for feed 10, inlet pipe 11, plumbago crucible 12, Stainless Steel Crucible 13;
Stainless Steel Crucible 13 is placed in resistance furnace 2; In the enclosed space that the bell 9 that plumbago crucible 12 is placed in Stainless Steel Crucible 13 and resistance furnace 2 is formed, rare gas element is entered by inlet pipe 11, and the gap between the agitator arm and cover plate 5 of whipping appts 6 is flowed out; Support mechanism 4 is fixed on the outer side wall of resistance furnace 2; Whipping appts 6 is arranged on support mechanism 4, and support mechanism 4 is movably arranged on the hoisting appliance 1 of resistance furnace 2 side; Particle transport device 7 is arranged on the side, top of resistance furnace 2; The agitating vane of whipping appts 6 stretches into plumbago crucible 12 inside by agitator arm;
The end of described whipping appts 6 agitator arm is provided with agitating vane, and it is inner that agitating vane stretches into plumbago crucible 12 by agitator arm.
Described particle transport device 7 comprises support 7-1, discharge port 7-2, bearing 7-3, rotor 7-4, rotating door mechanism 7-5, feed bin 7-6, retaining plate 7-7, connecting joint 7-8, electric motor 7-9;
Discharge port 7-2 is placed in the top of plumbago crucible 12; Retaining plate 7-7 and rotating door mechanism 7-5 is arranged on support 7-1, electric motor 7-9 is arranged on retaining plate, the rotor 7-4 of electric motor 7-9 is connected with rotating door mechanism 7-5 with connecting joint 7-8 respectively by bearing 7-3, and feed bin 7-6 is arranged on rotating door mechanism 7-5 top.
The refractory brick 14 for supporting plumbago crucible 12 is provided with in the inner bottom part of Stainless Steel Crucible 13, the below of plumbago crucible 12.
Bell 9 is provided with the cover plate 5 stretching into mouth for covering agitator arm.
Bell 9 has the viewing window 8 for observing plumbago crucible 12 inside.
The method adopting said apparatus to prepare particle enhanced aluminum-based composite material is realized by following step:
Step one: add aluminium alloy and the fusing that heats up; With commercial solid refined agent refining degasification, slagging-off in plumbago crucible 12 at the temperature of 710 DEG C; Aluminium alloy melt after refining is cooled to 640 DEG C and is incubated;
Step 2: open gas shield device, argon gas enters enclosed space by inlet pipe 11, makes aluminium alloy melt be under argon gas atmosphere protection;
Step 3: rotate support mechanism 4, coordinates fixed leg 3 to make the agitating vane of whipping appts 6 aim at plumbago crucible 12 center; Start lifting device 1, agitating vane is dropped to below aluminium alloy melt surface 35mm;
Step 4: start whipping appts 6, regulates the velocity of rotation of whipping appts 6, makes aluminium alloy melt surface form stable vortex;
Step 5: joined by enhanced granule 4-1 in feed bin 7-6, actuating motor 7-9, regulates velocity of rotation, makes rotating door mechanism 7-5 particle transport speed be 40g/min;
After step 6: enhanced granule 4-1 adds, close particle transport device 7, close whipping appts 6, start lifting device 1, regulate the agitating vane of agitator arm to Composite Melt surface; Regulating resistance stove 2 makes Composite Melt be warming up to 710 DEG C and be incubated;
Step 7: start lifting device 1, drops to 40mm bottom distance plumbago crucible 12 by the agitating vane of agitator arm; Start whipping appts 6, regulate stirring velocity, promote that enhanced granule 4-1 is evenly distributed in aluminium alloy melt;
Step 8: after particle 4-1 homogenizing terminates, starts lifting device 1, is risen to by whipping appts 6 on resistance furnace 2 bell 9; Support mechanism 4 half-twist; Cover cover plate 5; Melt temperature remains on 710 DEG C, prepared by particle enhanced aluminum-based composite material.
As mentioned above, just the present invention can be realized preferably.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from spirit of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (6)

1. a particle enhanced aluminum-based composite material stirring casting preparation facilities, is characterized in that: this device comprises hoisting appliance (1), resistance furnace (2), fixed leg (3), support mechanism (4), whipping appts (6), particle transport device (7), bell (9), opening for feed (10), inlet pipe (11), plumbago crucible (12), Stainless Steel Crucible (13);
Stainless Steel Crucible (13) is placed in resistance furnace (2); In the enclosed space that the bell (9) that plumbago crucible (12) is placed in Stainless Steel Crucible (13) and resistance furnace (2) is formed, rare gas element is entered by inlet pipe (11), and the gap between the agitator arm and cover plate (5) of whipping appts (6) is flowed out; Support mechanism (4) is fixed on the outer side wall of resistance furnace (2); Whipping appts (6) is arranged on support mechanism (4), and support mechanism (4) is movably arranged on the hoisting appliance (1) of resistance furnace (2) side; Particle transport device (7) is arranged on the side, top of resistance furnace (2); The agitating vane of whipping appts (6) stretches into plumbago crucible (12) inside by agitator arm.
2. particle enhanced aluminum-based composite material stirring casting preparation facilities according to claim 1, is characterized in that: described particle transport device (7) comprises support (7-1), discharge port (7-2), bearing (7-3), rotor (7-4), rotating door mechanism (7-5), feed bin (7-6), retaining plate (7-7), connecting joint (7-8), electric motor (7-9);
Discharge port (7-2) is placed in the top of plumbago crucible (12); Retaining plate (7-7) and rotating door mechanism (7-5) are arranged on support (7-1), electric motor (7-9) is arranged on retaining plate, the rotor (7-4) of electric motor (7-9) is connected with rotating door mechanism (7-5) with connecting joint (7-8) respectively by bearing (7-3), and feed bin (7-6) is arranged on rotating door mechanism (7-5) top.
3. particle enhanced aluminum-based composite material stirring casting preparation facilities according to claim 1, is characterized in that: the below of the inner bottom part in Stainless Steel Crucible (13), plumbago crucible (12) is provided with the refractory brick (14) for supporting plumbago crucible (12).
4. particle enhanced aluminum-based composite material stirring casting preparation facilities according to claim 1, is characterized in that: bell (9) is provided with the cover plate (5) stretching into mouth for covering agitator arm.
5. particle enhanced aluminum-based composite material stirring casting preparation facilities according to claim 1, is characterized in that: bell (9) has for observing the inner viewing window (8) of plumbago crucible (12).
6. adopt device according to any one of claim 1 to 5 to prepare the method for particle enhanced aluminum-based composite material:
Step one: resistance furnace (2) is heated to 400 DEG C, after temperature-stable, adds aluminium alloy and the fusing that heats up; With commercial solid refined agent refining degasification in plumbago crucible (12), slagging-off at the temperature of 710 DEG C; Aluminium alloy melt after refining is cooled to 640 DEG C and is incubated;
Step 2: open gas shield device, argon gas enters enclosed space by inlet pipe (11), makes aluminium alloy melt be under argon gas atmosphere protection;
Step 3: rotate support mechanism (4), coordinates fixed leg (3) to make the agitating vane of whipping appts (6) aim at plumbago crucible (12) center; Start hoisting appliance (1), agitating vane is dropped to below aluminium alloy melt surface 35mm;
Step 4: start whipping appts (6), regulates the velocity of rotation of whipping appts (6), makes aluminium alloy melt surface form stable vortex;
Step 5: enhanced granule (4-1) joined in feed bin (7-6), actuating motor (7-9), regulates velocity of rotation, makes rotating door mechanism (7-5) particle transport speed be 40g/min;
Step 6: after enhanced granule (4-1) is added, close particle transport device (7), close whipping appts (6), start hoisting appliance (1), regulate the agitating vane of agitator arm to Composite Melt surface; Regulating resistance stove (2) makes Composite Melt be warming up to 710 DEG C and be incubated;
Step 7: start hoisting appliance (1), drops to distance plumbago crucible (12) bottom 40mm by the agitating vane of agitator arm; Start whipping appts (6), regulate stirring velocity, promote that enhanced granule (4-1) is evenly distributed in aluminium alloy melt;
Step 8: after particle (4-1) homogenizing terminates, starts hoisting appliance (1), is risen to by whipping appts (6) on resistance furnace (2) bell (9); Support mechanism (4) half-twist; Cover cover plate (5); Melt temperature remains on 710 DEG C, prepared by particle enhanced aluminum-based composite material.
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CN105420527B (en) * 2015-12-23 2017-09-26 太原科技大学 A kind of turn of micro- note method of spray prepares the device of aluminum matrix composite
CN105478724B (en) * 2015-12-23 2017-08-29 华南理工大学 A kind of high-entropy alloy particle enhanced aluminum-based composite material and its stirring casting preparation technology
CN106756191B (en) * 2016-11-28 2018-07-17 北京有色金属研究总院 A kind of rotation method of impregnation prepares the device and method of particle enhanced aluminum-based composite material
CN107254596B (en) * 2017-05-23 2019-02-15 广东工业大学 A kind of achievable alloy refining degasification removal of impurities and churned mechanically multi-function device
CN107400791B (en) * 2017-06-19 2019-07-05 沈阳铸造研究所 A kind of device and method that is high-quality, efficiently preparing semi-solid aluminium alloy size
CN107385263B (en) * 2017-06-19 2019-09-24 沈阳铸造研究所 Device and method that is high-quality, efficiently preparing SiC particulate reinforced aluminum matrix composites

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CN1298457C (en) * 2005-04-05 2007-02-07 北京交通大学 Vacuum mechanical dual-stirring casting method for preparing granule reinforced aluminium-base composite material
CN100577831C (en) * 2007-11-23 2010-01-06 中国铝业股份有限公司 Apparatus for industrialized preparation of granule-reinforced aluminium-based composite material
JP2010042418A (en) * 2008-08-08 2010-02-25 Isuzu Motors Ltd Method of manufacturing particle-reinforced aluminum composite material
CN201960107U (en) * 2011-01-17 2011-09-07 西安科技大学 Mechanical-stirring and combined pressure-casting device for ceramic-particle strengthened aluminum-base composite material

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