CN104308094A - Energized solid metal slurry forming equipment and method based on liquidus - Google Patents
Energized solid metal slurry forming equipment and method based on liquidus Download PDFInfo
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- CN104308094A CN104308094A CN201410468602.XA CN201410468602A CN104308094A CN 104308094 A CN104308094 A CN 104308094A CN 201410468602 A CN201410468602 A CN 201410468602A CN 104308094 A CN104308094 A CN 104308094A
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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
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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Abstract
The invention discloses energized solid metal slurry forming equipment and method based on liquidus. The device comprises a bracket, wherein a solid rheological generator is supported on the bracket through an angle adjuster and is sleeved with a heat preservation layer. The method comprises the following steps: firstly, melting metal alloy, performing conventional melt treatment after the melting process is finished, and adjusting the melt temperature to be the liquidus temperature (described in the specification) of the alloy; secondly, energizing a metal melt by electromagnetic, ultrasonic, pulse current, vibration and mechanical stirring modes; taking the mechanical stirring mode as an example, pouring the molten alloy, and enabling the molten alloy to flow into the upper part of the solid rheological generator and flow out of the lower part of the solid rheological generator to obtain the required energized solid metal slurry. The equipment and the method can be used for rheoforming and thixoforming of metal.
Description
Technical field
The present invention relates to metal paste process equipment and method field, specifically a kind of metal energized based on liquidus curve is containing solid size former and method.
Background technology
Semi-solid metal forming concept is first proposed by Massachusetts Institute Technology professor Flemings the earliest.So-called Semisolid Metal Forming technology refers to the change of institutional framework and the mechanical property utilizing metal material to produce in fusing or process of setting, giving the deformation condition of metal alloy solution energy by controlling heating, cooling, work atmosphere, the kind of applying power and direction etc., under solid phase and liquid phase coexist state, various material forming processing being carried out to rapidoprint.Typical in metal solidification process, violent mechanical agitation is imposed to it, great mechanical energy fully destroys original nascent solid phase, obtain metal mother liquid that a kind of mushy stage coexists and wherein left floating certain broken tiny nascent solid phase (solid rate is generally 40%-60%) equably, at this moment we are called rheological slurry, and the method utilizing rheological slurry directly to form processing is referred to as the rheological molding of semi-solid-state metal; As this rheological slurry is frozen into ingot casting, it is made to give the semisolid district of post bake to metal by the energy of heating, at this moment cast metals is commonly referred to as semisolid metal blank, and utilize the semi-solid blank of metal to form processing, this method is referred to as thixotropic forming.
In recent years, the research due to semi-solid state metal rheological technology is more and more subject to the extensive attention of countries in the world, and preparation and the rheoforging device of various rheological slurry are come out one after another.Here the rheological slurry preparation method that main introduction occurs in recent years and rheoforging device:
(1), mechanical agitation prepares slurry
Mechanical mixing method is the method preparing slurry adopted the earliest, also slurry preparation method (No. 3948650th, the United States Patent (USP) adopted at the beginning of being semisolid invention, No. 3902544), this kind of method is developed in recent years, and creates several new mechanical agitation and prepare slurry formula rheological molding technology.Wherein penetrate that to cast shape the most noticeable to flow change.
Stream change is penetrated and is cast shape and comprise single-screw and double helix stream and become to penetrate and cast shape two kinds.
Semi-solid state metal rheological technology and injection molding of plastics combine with technique are got up by people's (No. 5501266th, United States Patent (USP)) such as the K.K.Wang of Cornell University of the U.S., invented a kind of new rheological molding technology, namely casting forming technique (Rheomoulding) is penetrated in the change of single-screw stream.Its operation principle is: overheated alloy melt flows under the influence of gravity in the gap of mixing drum and screw rod, in the process continuing to flow downward, constantly cooled and stir and shear, when arriving outlet, alloy melt oneself become the semi solid slurry of certain fraction solid.Before penetrating casting, the first slow astern segment distance of screw rod, makes its front end gather a certain amount of semi solid slurry, is then pressed into mold cavity with certain axial velocity (being less than or equal to 0.15m/s); Subsequently, screw rod is Stirring alloy melt again, prepares to penetrate casting next time.
The people such as Peng Xuan (CN1062793C) improve vertical stream change and penetrate casting machine, have developed the horizontal and horizontal prototype machine of 1000KN.This system is primarily of melting-delivery unit, and slurry generation unit and stirring injecting unit three part form.The stream that the people (CN2566961Y, CN2569943Y) such as Zhang Kui also propose system that two kinds of principles and structure and K.K.Wang develop close becomes casting system of penetrating, but whole system is horizontal positioned, and thus whole system assembling is simple.
Single-screw stream becomes the advantage of penetrating casting forming technique, and alloy melt is not only not easily involved in gas in inflow cylindrical shell process, and is stirred to shear in seal channel and more difficultly has any gas to enter, and therefore, product voidage is low, density is high; Technological process is short, does not need to carry out pretreatment to raw material, and it is convenient that waste product and foundry goods clout reclaim, thus improve production efficiency, reduces production time and cost; Its structure is simple, is easy to automation.Its shortcoming is: the material performance requirement of screw rod high (meeting wear-resisting, corrosion resisting property under high temperature etc.) in equipment; Usually stir by single-screw the shear rate produced not high enough.
The people (CN2471450Y) such as calendar year 2001 Luo Jirong propose the twin-screw technology of preparing of semi solid slurry, double-screw structure is improved, two screw flights are changed into many helical pitches, many stagger arrangement angle from original single helical pitch, single stagger arrangement angle, thus ensure that slurry is subject to different shear action in the different temperatures stage, effects on slurry making is more desirable, and by whole preparation facilities horizontal positioned, thus be conducive to practical operation.This method can reach very high shear rate, thus makes semisolid grain refine and nodularization many, and its cast structure uniformity is also quite high.Its weak point is: screw rod operating mode is poor, and consume large, the life-span is short.
At present, nearly all stream change is penetrated casting process and is not yet reached actual application level, is in equipment record and production technology optimization stage.Report to only have AZ91D magnesium alloy to adopt stream change to penetrate casting technology and produce out automobile, computer and camera parts blank as a trial.
(2) flow plate current change and prepare slurry
This technology is promoted the use of and also be there is the reason higher than conventional liquid forming technique cost and be restricted in industrial practice at present.In order to reduce semi-solid forming technology application cost, the patent No. 200710011510.9 proposes " a kind of Wave type inclined plate vibration device and preparation method preparing semi-solid alloy " is utilizing molten metal flow process coldplate conventional in casting to improve stirring action effect, and the semi-solid alloy of preparation is organized excellent.200610041892.5 proposing " a kind of cast preparation method with semi solid slurry and preparation facilities " is adopting the method for Quench or the method for Quench and mechanical oscillation, make the within it wall Quench crystalline growth of molten metal when flowing through water conservancy diversion through air deflector, simultaneously under the flowing souring of molten metal itself, make the thin brilliant generation necking down of Quench, fracture or broken, and then washed away fracture by liquid stream and incorporate liquid stream, obtain semi solid slurry.In addition, for reducing production cost, United States Patent (USP) 6880613 proposes two kinds of alloys to melt respectively, then by two kinds of metal collection mixing, adjustment mixing temperature and time obtain semi solid slurry.
These patents above, object simplifies production technology, reduces production cost, but still production is become is not complexity is exactly the poor problem of stock quality, at present, is also difficult to apply aborning, also rests on experiment development.
summary of the inventionthe object of this invention is to provide a kind of metal energized based on liquidus curve containing solid size former and method, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
The metal energized based on liquidus curve contains solid size former, it is characterized in that: include support, on support by angle demodulator be supported be obliquely installed containing rheological deformation generator, heat-insulation layer is had containing rheological deformation generator overcoat, support is also provided with the controlling organization be electrically connected with containing rheological deformation generator, wherein:
Containing coaxial rotation in rheological deformation generator, shaft body is installed, shaft body lower end with containing absorption surface in rheological deformation generator, land is provided with in the middle of shaft body, containing being provided with multi-turn electromagnetic vibration rotating ring in rheological deformation generator, multi-turn electromagnetic vibration rotating ring is along shaft body shaft on the shaft body be enclosed within successively above land, the copper conducting ring be enclosed within shaft body is provided with between adjacent electromagnetic vibration rotating ring, wherein undermost electromagnetic vibration rotating ring is connected with the land on shaft body by location hold-down screw, each electromagnetic vibration rotating ring is also connected with shaft body respectively by auxiliary clamp screw at sidepiece, containing being also provided with the carbon brush contacted with each copper conducting ring outer ring surface in rheological deformation generator, described carbon brush is connected with controlling organization on support by wire, be positioned at go up circle most electromagnetic vibration rotating ring on case is installed, electromagnet is provided with in case, the armature coordinated with work of electromagnet, described armature is connected with cambered plate spring by the connector vertical relative to shaft body, cambered plate spring by with connector concentrically the connecting rod of axis be connected with cambered surface and vibrate driver plate, described cambered surface vibration driver plate is close to the shaft body side gone up most above circle electromagnetic vibration rotating ring,
Describedly also be provided with case containing being positioned at shaft body termination upper end in rheological deformation generator, the armature be provided with electromagnet in case, coordinating with work of electromagnet, described armature is by being connected with surface plate spring with the Connection Block of shaft body concentrically axis, surface plate spring is by being connected with plane vibration driver plate with the connecting rod of Connection Block concentrically axis, and described plane vibration driver plate is close to shaft body upper end.
The described metal energized based on liquidus curve, containing solid size former, is characterized in that: electromagnetic vibration rotating ring, arrange middle spring insulator between copper conducting ring inwall and shaft body.
The metal energized based on liquidus curve contains a solid size forming method, it is characterized in that: comprise the following steps:
(1), melting, refining alloy melt, alloy liquid purify;
(2) 10-50 DEG C on liquidus curve that alloy melt pouring temperature cast temperature meets this kind of material, is controlled;
(3), control containing rheological deformation generator rotating speed, rotating speed and shearing force with proportional, with temperature inversely, rotating speed controls at 10-140r/min;
(4), electromagnetic agitation, ultrasonic wave, pulse current, vibrations, be connected with mechanical driving part containing rheological deformation generator shaft body, its energy intensity and aluminium alloy temperature, mechanical energy apply the phase proportional;
(5), on switch board control electromagnetic agitation intensity, regulate electromagnetism intensity;
(6), regulate below angle demodulator, practical standpoint is relevant with molten metal mobile performance, and general Alar uses 45 °;
(7), by controller regulate gearbox rotational frequency to regulate containing solid-state generator rotational frequency, frequency is conformed to rotating speed and remains on 10-140r/min;
(8), use switch board to regulate heat insulation wall temperature, regulate temperature range between 240-310 DEG C, ensure alloy liquid mobility;
(9), use switch board to regulate insulation in-furnace temperature to make it be incubated near aluminium alloy phase line, actual temp is relevant with aluminium alloy phase line;
(10), passing into protective gas containing in rheological deformation generator, magnesium alloy uses SF6, and aluminium alloy uses nitrogen.
Advantage of the present invention is: the present invention can be used for semi solid slurry (base) the material preparation of the multiple alloys such as aluminium, magnesium, nickel, tin, copper, iron, be particularly useful for semi solid slurry (base) the material preparation of magnesium alloy, easily combine with the conventional molding techniques such as die casting, extruding simultaneously, realize semi-solid rheological shaping, greatly reduce the cost of whole rheoforging process.
Accompanying drawing explanation
Fig. 1 is integral device structural representation of the present invention.
Fig. 2 is that the present invention contains shaft body part structural representation in rheological deformation generator, wherein:
Fig. 2 a is front view, and Fig. 2 b is top view.
Fig. 3 is for vibrating driver plate part-structure schematic diagram containing rheological deformation generator intrados.
Fig. 4 is for vibrating driver plate part-structure schematic diagram containing rheological deformation generator inner plane.
Fig. 5 organizes schematic diagram without the ADC12 aluminum alloy metal type casting of process of the present invention.
Fig. 6 organizes schematic diagram through the ADC12 aluminum alloy metal type casting of process of the present invention.
Detailed description of the invention
As shown in Fig. 1-as indicated at 4, the metal energized based on liquidus curve contains solid size former, include support 16, on support 16 by angle demodulator 17 be supported be obliquely installed containing rheological deformation generator 18, heat-insulation layer 19 is had containing rheological deformation generator 18 overcoat, support 16 is also provided with the controlling organization 20 be electrically connected with containing rheological deformation generator 18, wherein:
Containing coaxial rotation in rheological deformation generator 18, shaft body 1 is installed, shaft body 1 lower end contacts with containing workpiece 6 in rheological deformation generator 18, land is provided with in the middle of shaft body 1, containing being provided with multi-turn electromagnetic vibration rotating ring 3 in rheological deformation generator 18, multi-turn electromagnetic vibration rotating ring 3 is axially enclosed within the shaft body 1 above land along shaft body 1 successively, the copper conducting ring 8 be enclosed within shaft body is provided with between adjacent electromagnetic vibration rotating ring, wherein undermost electromagnetic vibration rotating ring is connected with the land on shaft body 1 by location hold-down screw 5, each electromagnetic vibration rotating ring is also connected with shaft body 1 respectively by auxiliary clamp screw 2 at sidepiece, containing being also provided with the carbon brush 4 contacted with each copper conducting ring 8 outer ring surface in rheological deformation generator 18, carbon brush 4 is connected with controlling organization 20 on support 16 by wire, be positioned at go up circle most electromagnetic vibration rotating ring on case 11 is installed, electromagnet 13 is provided with in case 11, to work the armature 12 coordinated with electromagnet 13, armature 12 is connected with cambered plate spring 10 by the connector vertical relative to shaft body 1, cambered plate spring 10 by with connector concentrically the connecting rod of axis be connected with cambered surface and vibrate driver plate 9, cambered surface vibration driver plate 9 is close to shaft body 1 sidepiece gone up most above circle electromagnetic vibration rotating ring,
Case 11 is also provided with containing being positioned at shaft body 1 termination upper end in rheological deformation generator 18, be provided with electromagnet 13 in case 11, work with electromagnet 13 armature 12 coordinated, armature 12 is by being connected with surface plate spring 15 with the Connection Block of shaft body 1 concentrically axis, surface plate spring 15 is by being connected with plane vibration driver plate 14 with the connecting rod of Connection Block concentrically axis, and plane vibration driver plate 14 is close to shaft body 1 upper end.
Electromagnetic vibration rotating ring 3, middle spring insulator 7 is set between copper conducting ring 8 inwall and shaft body 1.
A kind of metal, containing solid size forming method, comprises the following steps:
(1), melting, refining alloy melt, alloy liquid purify;
(2) 10-50 DEG C on liquidus curve that alloy melt pouring temperature cast temperature meets this kind of material, is controlled;
(3), control containing rheological deformation generator rotating speed, rotating speed and shearing force with proportional, with temperature inversely, rotating speed controls at 10-140r/min;
(4), electromagnetic agitation, ultrasonic wave, pulse current, vibrations, be connected with mechanical driving part containing rheological deformation generator shaft body, its energy intensity and aluminium alloy temperature, mechanical energy apply the phase proportional;
(5), on switch board control electromagnetic agitation intensity, regulate electromagnetism intensity;
(6), regulate below angle demodulator, practical standpoint is relevant with molten metal mobile performance, and general Alar uses 45 °;
(7), by controller regulate gearbox rotational frequency to regulate containing solid-state generator rotational frequency, frequency is conformed to rotating speed and remains on 10-140r/min;
(8), use switch board to regulate heat insulation wall temperature, regulate temperature range between 240-310 DEG C, ensure alloy liquid mobility;
(9), use switch board to regulate insulation in-furnace temperature to make it be incubated near aluminium alloy phase line, actual temp is relevant with aluminium alloy phase line;
(10), passing into protective gas containing in rheological deformation generator, magnesium alloy uses SF6, and aluminium alloy uses nitrogen.
Specific embodiment:
Embodiment 1: the present embodiment prepares aluminium alloy containing solid-state foundry goods, and the alloy designations applied is ADC12.The present embodiment, containing the mode of rheological deformation generator, is applicable to the production of continuous batch high-quality containing solid size.In enforcement, use heater to be carried out being melted to 710 DEG C by metal alloy, carry out conventional melt treatment after fusing, as degasification, refining.Adjusted melt temperature is incubated after 590 DEG C simultaneously, import containing in rheological deformation generator, containing rheological deformation generator rotating speed be 20r/s from containing the rheological deformation generator submarine gate after treatment flow into metal manufacturing apparatus containing solid size from generator bottom, the cast shape needed for acquisition.
Embodiment 2: the present embodiment prepares aluminium alloy containing solid-state foundry goods, and the alloy designations applied is A356.The present embodiment, containing the mode of rheological deformation generator, is applicable to the production of continuous batch high-quality containing solid size.In enforcement, metal alloy is melted, carry out conventional melt treatment after fusing, as degasification, refining.Poured into a mould by adjusted melt temperature to 600 DEG C, being 20r/s containing rheological deformation generator rotating speed flows into metal mold from containing rheological deformation generator bottom, the cast shape needed for acquisition from submarine gate semi solid slurry after treatment simultaneously.
Embodiment 3: this example prepares aluminium alloy containing solid-state foundry goods, and the alloy designations applied is wrought aluminium 2014. composition AlCuSiMn.The present embodiment, containing the mode of rheological deformation generator, is applicable to the production of continuous batch high-quality containing solid size.In enforcement, metal alloy is melted, carry out conventional melt treatment after fusing, as degasification, refining.Poured into a mould by adjusted melt temperature to 590 DEG C, being 20r/s containing rheological deformation generator rotating speed flows into metal mold from containing rheological deformation generator bottom, the cast shape needed for acquisition from submarine gate semi solid slurry after treatment simultaneously.
Claims (3)
1. the metal energized based on liquidus curve contains solid size former, it is characterized in that: include support, on support by angle demodulator be supported be obliquely installed containing rheological deformation generator, heat-insulation layer is had containing rheological deformation generator overcoat, support is also provided with the controlling organization be electrically connected with containing rheological deformation generator, wherein:
Containing coaxial rotation in rheological deformation generator, shaft body is installed, shaft body lower end with containing absorption surface in rheological deformation generator, land is provided with in the middle of shaft body, containing being provided with multi-turn electromagnetic vibration rotating ring in rheological deformation generator, multi-turn electromagnetic vibration rotating ring is along shaft body shaft on the shaft body be enclosed within successively above land, the copper conducting ring be enclosed within shaft body is provided with between adjacent electromagnetic vibration rotating ring, wherein undermost electromagnetic vibration rotating ring is connected with the land on shaft body by location hold-down screw, each electromagnetic vibration rotating ring is also connected with shaft body respectively by auxiliary clamp screw at sidepiece, containing being also provided with the carbon brush contacted with each copper conducting ring outer ring surface in rheological deformation generator, described carbon brush is connected with controlling organization on support by wire, be positioned at go up circle most electromagnetic vibration rotating ring on case is installed, electromagnet is provided with in case, the armature coordinated with work of electromagnet, described armature is connected with cambered plate spring by the connector vertical relative to shaft body, cambered plate spring by with connector concentrically the connecting rod of axis be connected with cambered surface and vibrate driver plate, described cambered surface vibration driver plate is close to the shaft body side gone up most above circle electromagnetic vibration rotating ring,
Describedly also be provided with case containing being positioned at shaft body termination upper end in rheological deformation generator, the armature be provided with electromagnet in case, coordinating with work of electromagnet, described armature is by being connected with surface plate spring with the Connection Block of shaft body concentrically axis, surface plate spring is by being connected with plane vibration driver plate with the connecting rod of Connection Block concentrically axis, and described plane vibration driver plate is close to shaft body upper end.
2. the metal energized based on liquidus curve according to claim 1 is containing solid size former, it is characterized in that: electromagnetic vibration rotating ring, arrange middle spring insulator between copper conducting ring inwall and shaft body.
3. based on the metal energized based on liquidus curve of former described in claim 1 containing a solid size forming method, it is characterized in that: comprise the following steps:
(1), melting, refining alloy melt, alloy liquid purify;
(2) 10-50 DEG C on liquidus curve that alloy melt pouring temperature cast temperature meets this kind of material, is controlled;
(3), control containing rheological deformation generator rotating speed, rotating speed and shearing force with proportional, with temperature inversely, rotating speed controls at 10-140r/min;
(4), electromagnetic agitation, ultrasonic wave, pulse current, vibrations, be connected with mechanical driving part containing rheological deformation generator shaft body, its energy intensity and aluminium alloy temperature, mechanical energy apply the phase proportional;
(5), on switch board control electromagnetic agitation intensity, regulate electromagnetism intensity;
(6), regulate below angle demodulator, practical standpoint is relevant with molten metal mobile performance, and general Alar uses 45 °;
(7), by controller regulate gearbox rotational frequency to regulate containing solid-state generator rotational frequency, frequency is conformed to rotating speed and remains on 10-140r/min;
(8), use switch board to regulate heat insulation wall temperature, regulate temperature range between 240-310 DEG C, ensure alloy liquid mobility;
(9), use switch board to regulate insulation in-furnace temperature to make it be incubated near aluminium alloy phase line, actual temp is relevant with aluminium alloy phase line;
(10), passing into protective gas containing in rheological deformation generator, magnesium alloy uses SF6, and aluminium alloy uses nitrogen.
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| CN201410468602.XA CN104308094B (en) | 2014-09-15 | 2014-09-15 | The metal energized based on liquidus curve contains solid size former and method |
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| CN1186722A (en) * | 1997-10-05 | 1998-07-08 | 财团法人工业技术研究院 | Method and device for semi-solid metal ejection formation |
| CN2569943Y (en) * | 2002-09-12 | 2003-09-03 | 北京有色金属研究总院 | Apparatus for preparing and shaping metal semi-solid grout |
| US20050211407A1 (en) * | 2003-05-01 | 2005-09-29 | Spx Corporation | Semi-solid metal casting process of hypoeutectic aluminum alloys |
| CN101054636A (en) * | 2007-05-31 | 2007-10-17 | 东北大学 | Wave type inclined plate vibration device for preparing semisolid state alloy and preparation method thereof |
| CN101817064A (en) * | 2009-04-24 | 2010-09-01 | 兰州理工大学 | Device and method for preparing metal semi-solid slurry |
| CN103820661A (en) * | 2014-02-27 | 2014-05-28 | 上海交通大学 | Preparation method of semisolid slurry of rare earth magnesium alloy |
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2014
- 2014-09-15 CN CN201410468602.XA patent/CN104308094B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186722A (en) * | 1997-10-05 | 1998-07-08 | 财团法人工业技术研究院 | Method and device for semi-solid metal ejection formation |
| CN2569943Y (en) * | 2002-09-12 | 2003-09-03 | 北京有色金属研究总院 | Apparatus for preparing and shaping metal semi-solid grout |
| US20050211407A1 (en) * | 2003-05-01 | 2005-09-29 | Spx Corporation | Semi-solid metal casting process of hypoeutectic aluminum alloys |
| CN101054636A (en) * | 2007-05-31 | 2007-10-17 | 东北大学 | Wave type inclined plate vibration device for preparing semisolid state alloy and preparation method thereof |
| CN101817064A (en) * | 2009-04-24 | 2010-09-01 | 兰州理工大学 | Device and method for preparing metal semi-solid slurry |
| CN103820661A (en) * | 2014-02-27 | 2014-05-28 | 上海交通大学 | Preparation method of semisolid slurry of rare earth magnesium alloy |
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