CN101745629A - Method for preparing semi-solid alloy rheological slurry or billet through annular-gap type electromagnetic stirring - Google Patents

Method for preparing semi-solid alloy rheological slurry or billet through annular-gap type electromagnetic stirring Download PDF

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Publication number
CN101745629A
CN101745629A CN200810239964A CN200810239964A CN101745629A CN 101745629 A CN101745629 A CN 101745629A CN 200810239964 A CN200810239964 A CN 200810239964A CN 200810239964 A CN200810239964 A CN 200810239964A CN 101745629 A CN101745629 A CN 101745629A
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slurry
semi
cooling
solid
alloy
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CN200810239964A
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徐骏
张志峰
白月龙
石力开
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Beijing General Research Institute for Non Ferrous Metals
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Beijing General Research Institute for Non Ferrous Metals
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Priority to CN200810239964A priority Critical patent/CN101745629A/en
Priority claimed from PCT/CN2009/072611 external-priority patent/WO2010000209A1/en
Publication of CN101745629A publication Critical patent/CN101745629A/en
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Abstract

A method for preparing semi-solid metal or alloy slurry or billet through annular-gap type electromagnetic stirring is hereinafter referred to as an annular-gap type electromagnetic stirring method in which the liquid metal or alloy liquid with 5-100 DEG C higher than the liquidus temperature is cast in an annular gap formed between an inner side wall of a slurrying chamber and an outer wall of an internal cooling controller. The metal or the alloy liquid is strongly stirred under the action of an electromagnetic induction rotary stirrer. Meanwhile, the cooling medium flowing in an external cooling controller and the internal cooling controller lead the temperature field of the slurry to be more uniform, thereby obtaining the fine and uniform semi-solid structure. The method is characterized in that the width of the annular gap formed between the inner side wall of the slurrying chamber and the outer wall of the internal cooling controller is 3-100mm. During preparation, the cooling medium is flowed in the external cooling controller and the internal cooling controller so as to lead the temperature field of the slurry to be uniform. The preparation method leads the stirring force field and the temperature field of the slurry to be more uniform, thereby obtaining the high-quality semi-solid slurry. The method has the advantages of simple preparation process, convenient operation, excellent shape of the semi-solid structure, uniformity and fineness and low preparation cost, and is particularly applicable to preparation of semi-solid aluminum or aluminum alloy, magnesium and magnesium alloy and other metal and alloy or composite material slurry or billet.

Description

The circular seam type electromagnetic agitation prepares the method for semi-solid alloy rheological slurry or blank
Technical field
The invention belongs to the semi-solid-state metal processing technique field, relate to the preparation method of a kind of semi-solid-state metal or alloy pulp or blank.Be applicable to preparation semi-solid-state metal or alloy pulp or blank.
Background technology
Since nineteen seventies Massachusetts Institute Technology professor Flemings invented the Semi-Solid Metals Forming technology since, the preparation of semi-solid metal slurry and forming technique have caused the extensive concern of countries in the world immediately as a kind of novel technology, the numerous and confused great amount of manpower and material resources that drops into is carried out relevant research and development with financial resources to this technology, the preparation method of present many metal pastes invents, and mainly contains electromagnetic stirring method; Mechanical mixing method; The deformation strain activation method; The ultrasonic vibration method; Spray deposition, list/double helix paddling process; Low overheat cast and light current magnetic paddling process; Low overheat hang plate casting, multiple pulping process such as melt mixed method.And in these preparation methods, electromagnetic stirring method does not pollute alloy owing to having, alloy pulp is pure, the control parameter is easy to regulate, can produce advantages such as rheological slurry or continuous casting continuously, dropped into and commercially produced and obtained application in a big way, become the main preparation methods of present production semi-solid-state metal and alloy pulp or blank.But because there is the inner suffered electromagnetic stirring force of slurry in the existence of electromagnetic induction Kelvin effect and significantly distinguishes in addition, the mixing power that the slurry top layer is subjected to is big and inner little.And, cause the field distribution of slurry temperature inside also inhomogeneous because the heat radiation of slurry mainly spreads out of by the top layer, the low and internal temperature height of slurry skin temperature.These factors cause the semi solid slurry Tissue distribution for preparing inhomogeneous, and the top layer is less granular or rosiness, and inside often is comparatively thick rose crystalline substance or dendrite, and slurry or blank are organized relatively poor.The further expansion of this technology range of application or the raising of competitiveness have been influenced.Therefore semisolid slurrying industry is generally seen the Kelvin effect of electromagnetic induction existence as a kind of adverse factors and is done one's utmost to be avoided at present, also often adopt the means of the skin depth that reduces electromagnetic agitation frequency, increase electromagnetic field to overcome the adverse effect of Kelvin effect during slurrying is produced, attempt to obtain comparatively desirable semi solid slurry tissue slurry tissues.But this can cause pulping equipment huge, and cost of investment is very high, and the pulp preparation cost is also very high.
Prepare in the method for semi-solid-state metal and alloy pulp or blank in electromagnetic agitation, No. 4434837 patents of the U.S. and 4229210 all disclose the electromagnetic agitation method of several preparation semi-solid-state metals and alloy pulp and blank, its cardinal principle is to utilize strong electromagnetic agitation to smash primary dendrite, the inhibition primary grain is grown to dendritic crystalline, thereby prepares the semi-solid-state metal and the alloy pulp of spherical or granular primary grain.In the relevant electromagnetic agitation method of above-mentioned patent disclosure, do not mention the cooling of slurry inside, also do not propose to obtain the method in uniform sizing material temperature field.But when the electromagnetic agitation method that adopts above-mentioned patent disclosure prepares semi solid slurry, the skewness of slurry temperature field, the outer rapid heat dissipation of slurry, and the heat radiation of slurry inside center is slow, cause the generation of primary grain on room and time to have tangible difference, the outer primary grain of slurry is separated out earlier, and separates out behind the inner primary grain of slurry, the final like this inhomogeneities that can cause slurry tissues, more like this for the slurry or the blank of large scale and big specification.And because the Kelvin effect in electromagnetic induction magnetic field, making magnetic field intensity be exponential form from the outer rim of slurry to the center successively decreases, the stirring action that causes the skin of slurry to be subjected to is strong, and the stirring action that is subjected at the center of slurry is very weak, therefore in the slurry or blank tissue that adopt the method to obtain, Tissue distribution is very inhomogeneous, outer tiny, and internal layer is thick, and tissue morphology is also inequality, and it is spherical or granular that outer field primary grain is, and the center is dendrite or rosiness, therefore adopt the semi solid slurry of method for preparing or the size of blank also to be restricted, be difficult to prepare semi-solid-state metal and the alloy pulp or the blank of high-quality.
Chinese patent 200410090636.6 has also proposed a kind of composite electromagnetic that applies and has stirred the method for preparing semi-solid metal slurry continuously, the cardinal principle of this method is: the over-heat metal liquid that melting is qualified continuously pours in the tundish of a preheating earlier, molten metal in the tundish is applied electromagnetic agitation, make its under even cooling condition temperature near liquidus temperature; Then, the interior mozzle of metal liquid through being attached thereto of tundish derived, and applies intense electromagnetic stirring and cooling simultaneously outside the pipe that flows backwards, and obtains to wait the semi-solid metal slurry of axle, refinement, homogeneous.Adopt the method for preparing semi-solid metal slurry, can solve in the prior art since leave standstill merely preservation and controlling casting metal liquid near the difficult operability of liquidus temperature and the metal liquid degree of superheat brought thus the technical barrier of mobile variation when too low, also can avoid since in the prior art big, the metal liquid of pulping chamber size stir the inhomogeneous even and uneven problem of solidified structure of inhomogeneous cooling that causes.In the method, adopted the composite electromagnetic stirring technique, the not mentioned measure that how to obtain the even temperature field and stir the field of force.But when this method of employing prepares semi-solid metal slurry, though adopted strong composite electromagnetic stirring technique to help flowing of semi-solid alloy slurry, but the inhomogeneities of slurry temperature field and the inhomogeneities of slurry tissues still obviously exist, semi-solid alloy slurry or blank that can't the production high-quality.
In a word, the electromagnetic agitation method that adopts both at home and abroad prepares in the Apparatus and method for of semi-solid-state metal and alloy pulp or blank at present, even adopt multiple measures such as low frequency stirring, also because the existence of the intrinsic heat dissipation characteristics of Kelvin effect and slurry, the temperature field of slurry distributes and still there is bigger inhomogeneities in Tissue distribution, be difficult for producing the semi solid slurry or the blank of high-quality, limited further developing and using of this technology.
Summary of the invention
The purpose of this invention is to provide a kind of method for preparing semi-solid-state metal or alloy pulp or blank, tiny by the semi solid slurry even tissue that this method obtains, form is good, helps producing semi-solid-state metal or the alloy blank or the slurry of qualified high-quality.
To achieve these goals, the technical solution used in the present invention is:
A kind of circular seam type electromagnetic agitation prepares the method for the slurry or the blank of semi-solid-state metal or alloy, be called for short " circular seam type electromagnetic stirring method ", it is characterized in that: the inside cooling controller that can feed cooling medium is set in the pulping chamber that is adopted, form the annulus between the outer wall of inner cooling controller and the madial wall of pulping chamber, periphery at this pulping chamber is disposed with the external refrigeration controller from inside to outside, insulation material, magnetic stirrer, the liquid metal or the alloy liquid that will be higher than 5~100 ℃ of its liquidus temperatures pour in the annulus that forms between pulping chamber madial wall and the inner cooling controller outer wall, and open magnetic stirrer liquid metal in the annulus or alloy liquid are stirred, carry out the semi solid slurry preparation, the cooling medium of the ambient temperature that in outside cooling controller and inner cooling controller, feeds respectively simultaneously, its cooling velocity is 1~150 ℃/min, make that the semi solid slurry temperature field of preparation is more even, thereby obtain tiny and uniform semi solid slurry tissue, and the temperature of semi solid slurry is controlled at be lower than its liquidus temperature and is higher than between its solidus temperature.
The temperature range of semi solid slurry is the solidus of metal or alloy melt and the temperature range between the liquidus curve, the temperature that also is semi solid slurry is lower than liquidus temperature and is higher than solidus temperature, the determining of semi solid slurry temperature decides according to the complexity of the part of formed thereby and the concrete condition in the operating process, if part complexity, complete for filling, the temperature of then required semi solid slurry is higher; If part is simple, the temperature of required semi solid slurry can be hanged down a bit.Therefore the temperature of semi solid slurry is to determine according to the complexity of part and the concrete condition in the operating process, and for the different alloy of different parts, the temperature of semi solid slurry is different.
In the method for the invention, the annulus width that forms between described pulping chamber madial wall and the inner cooling controller outer wall is 3-200mm.
In the method for the invention, described pulping chamber is a cylindrical vessel, and described external refrigeration controller is the helix tube around the cylindrical vessel periphery, and its two ends are provided with the import and the outlet of cooling medium, the flow of cooling medium is 0~200 liter/min, and ≠ 0.
In the method for the invention, described inner cooling controller is for being connected with the cooling duct of cooling medium in it, the cooling duct is made up of central tube and its outer tube, the suitable for reading of central tube is the cooling medium input port, the end opening of central tube communicates with outer tube, and central tube constitutes the cooling medium input channel; The suitable for reading of outer tube is the cooling medium delivery outlet, and outer tube constitutes the cooling medium output channel, and the flow of cooling medium is 0~200 liter/min, and ≠ 0.
In the method for the invention, described magnetic stirrer adopts induction to exchange the rotating electromagnetic agitator, and frequency is 5~100Hz.
In the method for the invention, in the semi solid slurry preparation process, the semi solid slurry internal-external temperature difference is controlled at ± 3 ℃ in, described semi solid slurry internal-external temperature difference be in inner cooling controller outer wall semi solid slurry temperature and be in temperature poor of the semi solid slurry of pulping chamber madial wall.
In the method for the invention, prepared semi solid slurry is a kind of in semisolid aluminum slurry, semi-solid aluminium alloy size, semisolid magnesium slurry and the semi-solid magnesium alloy slurry.
In the method for the invention, semi solid slurry is solidified in pulping chamber fully, can obtain any one blank in semisolid aluminium blank, semi-solid aluminium alloy blank, semisolid magnesium blank and the semi-solid magnesium alloy blank, this blank can be used as the original blank of semi-solid die casting.
In the method for the invention; in preparation semi solid slurry process; feed the protective gas of avoiding or reduce the metal or alloy oxidation in the annulus that forms between pulping chamber madial wall and inner cooling controller outer wall, this protective gas is argon gas, nitrogen or helium.
In the method for the invention, the material of described pulping chamber, inner cooling controller and external refrigeration controller is nonmetal or does not have the magnetic metal.
In order to overcome the adverse effect of electromagnetic induction Kelvin effect, the present invention is provided with the inside cooling controller that can feed cooling medium in pulping chamber, form the annular gap between the outer wall of inner cooling controller and the madial wall of pulping chamber, can make semi-solid alloy melt in this slit, carry out comparatively strong stirring under the effect of electromagnetic stirring force, the cooling medium that feeds in the inner cooling controller can make the heat radiation of slurry more even simultaneously, the distribution in temperature field is also more even, and the slurry tissues that obtains distributes also even more ideal.
The liquid metal and the alloy of certain degree of superheat can be poured in the annular space, metal and alloy melt carry out strong stirring under the effect of electromagnetic stirring force for this reason.Simultaneously, the temperature field of slurry is more even under the common cooling effect of inner cooling controller and pulping chamber, the stirring field of force and the temperature field that are subjected to of slurry will be more even like this, thereby obtain the semi solid slurry of high-quality, then this semi solid slurry is transplanted directly on die casting machine or forging machine, extruder shaping; Maybe the semi solid slurry that obtains is frozen into blank fully, again this blank is reheated to semi solid zone, then blank is transferred to die casting machine or forging machine, extruder shaping.This preparation technology is simple, and is easy to operate, and the microstructure of semisolid form is good, preparation cost is low, is fit to very much the preparation of semi-solid-state metal and alloy pulp or blank.
The concrete preparation technology of the present invention is as follows:
1, produce the metal and the alloy melt of certain degree of superheat, the temperature of this melt is controlled at above 5~100 ℃ of liquid phase phase temperature, and this melt is poured in the annular space that forms between pulping chamber inwall and the inner cooling controller outer wall.
2, pulping chamber be shaped as cylindrical shape, the straight tube-like of the bottom sealing that is shaped as hollow of inner cooling controller, the external refrigeration controller be shaped as helix tube.The material of pulping chamber, inner cooling controller and external refrigeration controller is nonmetal or does not have the magnetic metal.The annular space width that forms between pulping chamber inwall and the inner cooling tube outer wall is 3~200mm.
3, magnetic stirrer adopts induction to exchange the rotating electromagnetic agitator, and frequency is 5~100Hz.
4, pulping chamber outer setting external refrigeration controller, the cooling medium that external refrigeration controller and inner cooling controller feed is air at room temperature, nitrogen, argon gas or room temperature cold water, flow is 0~200 liter/min, and ≠ 0.
5, after the cast, metal and alloy pulp carry out strong stirring in the annulus, slurry temperature reduces gradually under the cooling effect of inner cooling controller and external refrigeration controller simultaneously, regulate the flow of cooling medium, the cooling velocity that makes slurry is 1~150 ℃/min, and ≠ 0.Make the temperature field of semisolid aluminium and aluminium alloy or magnesium and magnesium alloy even, control semi solid slurry inside and outside temperature difference be no more than ± 3 ℃.
6, in preparation process, can feed the oxidation that metal and alloy were avoided or reduced to protective gas, this protective gas can be protective gas such as argon gas, nitrogen, helium.
7, treat that slurry temperature reaches predetermined temperature after, immediately this slurry is transplanted on die casting machine or forging machine, extruder shaping, or slurry solidified in pulping chamber fully, can obtain special semisolid aluminium and aluminium alloy or magnesium and magnesium alloy blank, this blank can be used as the original blank of semi-solid die casting.
Compared with prior art, advantage of the present invention is: compare with the electromagnetic agitation method of routine, and the adverse effect that this invention has avoided the electromagnetic induction Kelvin effect to bring, mixing power and temperature field that slurry is subjected to are more even.Problems such as this invention all concentrates on narrower slit internal area with slurry and stirs, and the stirring that slurry is subjected to is more violent, and intensity is bigger, and the stirring that slurry is subjected to is more even, overcomes the inside and outside inequality that stirs of slurry that conventional electromagnetic agitation causes, and tissue odds is even.In addition by inner cooling controller and external refrigeration controller are set, make the temperature field of semi-solid alloy slurry even, the semi solid slurry even tissue that obtains, tiny, form is good, and the diameter of inner cooling controller can freely select, and can freely adjust the distance between inner cooling controller and the spare-crucible inwall like this, help slurry and obtain bigger shear rate, obtain tiny and uniform tissue.In addition, this invented technology is simple, easy to operate, and cost of investment is low.Enterprise is aborning as long as adopt power frequency just can carry out electromagnetic agitation, and do not need to adopt low frequency to stir, do not need frequency conversion system yet, overcome the structure bulky complex that present electromagnetic mixing apparatus adopts frequency conversion system to bring, shortcomings such as cost of investment height, can significantly reduce the preparation cost of semi-solid alloy slurry or blank, finally can reduce the production cost of semisolid foundry goods, strengthen the competitiveness of semisolid foundry goods and the range of application of expansion semisolid foundry goods.
This invention both had been suitable for the preparation of acieral and composite material semi-solid state slurry or blank, also was suitable for the preparation of magnesium base alloy, acid bronze alloy, zinc-containing alloy, ferrous alloy and other non-ferrous alloys and composite material semi-solid state slurry or blank.
Description of drawings
Fig. 1 is the pulping device structural representation that the present invention adopts.
Fig. 2 is the quenching structure of the semisolid A357 aluminium alloy size limit portion for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies.
Fig. 3 is the quenching structure at the semisolid A357 aluminium alloy size middle part for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies.
Fig. 4 is the quenching structure at the semisolid A357 aluminium alloy size center for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies.
The specific embodiment
The main embodiment of preparation semi-solid state metal rheological slurry of the present invention or blank is:
As shown in Figure 1, inner cooling controller 1 is for being connected with the cooling duct of cooling medium in it, the cooling duct is made up of central tube and its outer tube, and the suitable for reading of central tube is the cooling medium input port, the end opening of central tube communicates with outer tube, and central tube constitutes the cooling medium input channel; The suitable for reading of outer tube is the cooling medium delivery outlet, and inner cooling controller 1 inside can feed cooling medium.External refrigeration controller 3 is helix tubes, has a plurality of apertures that are evenly distributed on the pipe, its place pulping chamber 4 external insulation material 5 inside and apart from pulping chamber outer wall certain distance, external refrigeration controller 3 inside also can feed cooling medium.Pulping chamber is 4 to be columnar containers, and it is positioned over, and insulation material is inner to form a sealed hollow.Inner cooling controller 1 places the center of pulping chamber 4.Form the slit of an annular between the madial wall of inner cooling controller 1 and the outer wall of external refrigeration controller 3.Magnetic stirrer 2 places the outside of insulation material 5.
Utilize induction heater fusing A357 aluminium alloy melt, the liquidus temperature of A357 aluminium alloy is 613 ℃.Melt temperature is controlled at 650 ℃.Pulping chamber is the cylindrical shape rustless steel container, inner cooling controller adopts high purity graphite to make, the overall diameter of inner cooling controller is 40mm, and the inner diameter of pulping chamber is 80mm, and the annulus that forms between pulping chamber madial wall and the inner cooling controller outer wall is of a size of 20mm like this.With pulping chamber and inner cooling controller place holding furnace be preheated to 200 ℃ and take out fast lay finish after, overheated aluminium alloy melt poured into carries out strong agitation in the annulus, the input nominal power of agitator is 1200W, stirring frequency is 50Hz.The cooling medium of importing in inner cooling controller and the external refrigeration controller is an air at room temperature, and flow is 30 liters/min, the slurry internal-external temperature difference can be controlled in ± and 3 ℃.When slurry temperature is cooled to 600, then can obtains fraction solid and be about 0.35 semisolid A357 aluminium alloy size, slurry tissues such as Fig. 2, Fig. 3 and shown in Figure 4.Fig. 2 is the quenching structure of the semisolid A357 aluminium alloy size limit portion for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies; Fig. 3 is the quenching structure at the semisolid A357 aluminium alloy size middle part for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies; Fig. 4 is the quenching structure at the semisolid A357 aluminium alloy size center for preparing of the present invention, and light areas is spherical nascent α-Al, and darker regions is the eutectic liquid that solidifies.This slurry can be transplanted directly on die casting machine or forging machine, extruder shaping this moment.Or in pulping chamber, solidify down the original blank of using as thixotropic forming fully.

Claims (10)

1. a circular seam type electromagnetic stirring method prepares the method for the slurry or the blank of semi-solid-state metal or alloy, it is characterized in that: the inside cooling controller that can feed cooling medium is set in the pulping chamber that is adopted, form the annular gap between the outer wall of inner cooling controller and the madial wall of pulping chamber, periphery at this pulping chamber is disposed with the external refrigeration controller from inside to outside, insulation material, magnetic stirrer, the liquid metal or the alloy liquid that will be higher than 5~100 ℃ of its liquidus temperatures pour in the annulus that forms between pulping chamber madial wall and the inner cooling controller outer wall, and open magnetic stirrer liquid metal in the annulus or alloy liquid are stirred, carry out the semi solid slurry preparation, the cooling medium of the ambient temperature that in outside cooling controller and inner cooling controller, feeds respectively simultaneously, its cooling velocity is 1~150 ℃/min, make that the temperature field of preparation semi solid slurry is more even, thereby obtain tiny and uniform semi solid slurry tissue, and the temperature of semi solid slurry is controlled at be lower than its liquidus temperature and is higher than between its solidus temperature.
2. it is characterized in that in accordance with the method for claim 1: the annulus width that forms between described pulping chamber madial wall and the inner cooling controller outer wall is 3-200mm.
3. in accordance with the method for claim 1, it is characterized in that: described pulping chamber is a cylindrical vessel, described external refrigeration controller is the helix tube around the cylindrical vessel periphery, its two ends are provided with the import and the outlet of cooling medium, the flow of cooling medium is 0~200 liter/min, and ≠ 0.
4. in accordance with the method for claim 1, it is characterized in that: described inner cooling controller is for being connected with the cooling duct of cooling medium in it, the cooling duct is made up of central tube and its outer tube, the suitable for reading of central tube is the cooling medium input port, the end opening of central tube communicates with outer tube, and central tube constitutes the cooling medium input channel; The suitable for reading of outer tube is the cooling medium delivery outlet, and outer tube constitutes the cooling medium output channel, and the flow of cooling medium is 0~200 liter/min, and ≠ 0.
5. in accordance with the method for claim 1, it is characterized in that: described magnetic stirrer adopts induction to exchange the rotating electromagnetic agitator, and frequency is 5~100Hz.
6. in accordance with the method for claim 1, it is characterized in that: in the semi solid slurry preparation process, the semi solid slurry internal-external temperature difference is controlled at ± 3 ℃ in, described semi solid slurry internal-external temperature difference be in inner cooling controller outer wall semi solid slurry temperature and be in temperature poor of the semi solid slurry of pulping chamber madial wall.
7. it is characterized in that in accordance with the method for claim 1: prepared semi solid slurry is a kind of in semisolid aluminum slurry, semi-solid aluminium alloy size, semisolid magnesium slurry and the semi-solid magnesium alloy slurry.
8. in accordance with the method for claim 7, it is characterized in that: semi solid slurry is solidified in pulping chamber fully, can obtain any one blank in semisolid aluminium blank, semi-solid aluminium alloy blank, semisolid magnesium blank and the semi-solid magnesium alloy blank, this blank can be used as the original blank of semi-solid die casting.
9. in accordance with the method for claim 1; it is characterized in that: in preparation semi solid slurry process; feed the protective gas of avoiding or reduce the metal or alloy oxidation in the annulus that forms between pulping chamber madial wall and inner cooling controller outer wall, this protective gas is argon gas, nitrogen or helium.
10. it is characterized in that in accordance with the method for claim 1: the material of described pulping chamber, inner cooling controller and external refrigeration controller is nonmetal or does not have the magnetic metal.
CN200810239964A 2008-12-16 2008-12-16 Method for preparing semi-solid alloy rheological slurry or billet through annular-gap type electromagnetic stirring Pending CN101745629A (en)

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PCT/CN2009/072611 WO2010000209A1 (en) 2008-07-04 2009-07-03 Method and apparatus for production of semi-solidified alloy slurry by electromagnetic stirring in annulus of tank

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CN103658564A (en) * 2012-09-25 2014-03-26 北京有色金属研究总院 Electromagnetic shearing melt treatment device
CN104232954A (en) * 2014-09-19 2014-12-24 湖南文昌科技有限公司 Device and method for preparing composite material by adopting semi-solid stirring
CN105063446A (en) * 2015-08-12 2015-11-18 中国兵器工业第五九研究所 Preparing method of particle reinforcement magnesium-based composite
CN105537540A (en) * 2016-01-04 2016-05-04 中兴通讯股份有限公司 Preparation method and preparation equipment for semi-solid slurry
CN105798261A (en) * 2014-12-31 2016-07-27 北京有色金属研究总院 Forming device and method for preparing high-structural strength aluminum alloy hub
CN105855498A (en) * 2015-01-21 2016-08-17 中兴通讯股份有限公司 Semisolid metal slurry preparation device and method
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CN103658564A (en) * 2012-09-25 2014-03-26 北京有色金属研究总院 Electromagnetic shearing melt treatment device
CN106413940A (en) * 2014-05-16 2017-02-15 吉斯科有限公司 Process for preparing molten metals for casting at a low to zero superheat temperature
CN104232954A (en) * 2014-09-19 2014-12-24 湖南文昌科技有限公司 Device and method for preparing composite material by adopting semi-solid stirring
CN105798261B (en) * 2014-12-31 2018-02-06 北京有色金属研究总院 A kind of building mortion and method for preparing high structural strength aluminium alloy wheel hub
CN105798261A (en) * 2014-12-31 2016-07-27 北京有色金属研究总院 Forming device and method for preparing high-structural strength aluminum alloy hub
CN105855498A (en) * 2015-01-21 2016-08-17 中兴通讯股份有限公司 Semisolid metal slurry preparation device and method
CN105063446B (en) * 2015-08-12 2017-09-19 中国兵器工业第五九研究所 A kind of particle reinforced magnesium base compound material preparation method
CN105063446A (en) * 2015-08-12 2015-11-18 中国兵器工业第五九研究所 Preparing method of particle reinforcement magnesium-based composite
CN106563777A (en) * 2015-10-08 2017-04-19 富准精密工业(深圳)有限公司 Preparation method and device for semi-solid metal slurry
WO2017092551A1 (en) * 2015-12-02 2017-06-08 珠海市润星泰电器有限公司 Method and device for preparing semi-solid slurry
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CN106925762A (en) * 2015-12-29 2017-07-07 北京有色金属研究总院 The apparatus and method that a kind of high shear strong electromagnetic stirs melt treatment
CN106925732B (en) * 2015-12-30 2019-09-03 有研工程技术研究院有限公司 A kind of uniform cooler preparing large-size aluminum alloy ingot and method
CN106925732A (en) * 2015-12-30 2017-07-07 北京有色金属研究总院 A kind of uniform cooler and method for preparing large-size aluminum alloy ingot
CN105537540A (en) * 2016-01-04 2016-05-04 中兴通讯股份有限公司 Preparation method and preparation equipment for semi-solid slurry
CN109530635A (en) * 2019-01-16 2019-03-29 南方科技大学 The method for preparing metal or alloy semi solid slurry and non-aluminum silicon systems aluminium alloy semi-solid slurry
CN112536430A (en) * 2020-12-02 2021-03-23 哈尔滨工业大学 Continuous stirring device and method for preparing semi-solid metal slurry or metal-based composite slurry by using same

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