CN102022923A - Method for stirring aluminum-15 magnesium oxide pseudo-alloy liquid - Google Patents
Method for stirring aluminum-15 magnesium oxide pseudo-alloy liquid Download PDFInfo
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- CN102022923A CN102022923A CN 201010599514 CN201010599514A CN102022923A CN 102022923 A CN102022923 A CN 102022923A CN 201010599514 CN201010599514 CN 201010599514 CN 201010599514 A CN201010599514 A CN 201010599514A CN 102022923 A CN102022923 A CN 102022923A
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Abstract
The invention discloses a method for stirring aluminum-15 magnesium oxide pseudo-alloy liquid and belongs to the field of researches on aluminum-15 magnesium oxide pseudo-alloy liquid stirring In the invention, a straight-blade crucible and electromagnetic stirring combined method is adopted to stir the aluminum-15 magnesium oxide pseudo-alloy liquid under a condition of a backward inclination angle beta of 8 to 10 degrees in the length direction of straight blades and a condition of a downward inclination angle gamma of 58 to 60 degrees in the width direction of the straight blades, so that the uniform distribution of the heavy magnesium oxide particles can be realized fast and stirring time can be reduced to 7 minutes.
Description
Technical field
The present invention relates to the stirring means of a kind of aluminium-15 magnesia fake alloy liquid.
Background technology
Publication number: CN1908210, denomination of invention: on " a kind of stirring method of aluminum-based alloy liquid and device ", set forth the stirring means of the aluminum-based alloy liquid that contains the heavy metal components that do not dissolve each other, that is, adopting conventional rotating electromagnetic stirring to be furnished with the prismatic blade graphite crucible mode that combines with inwall stirs the aluminum-based alloy liquid that contains the heavy metal components that do not dissolve each other.In this prismatic blade crucible+electromagnetic agitation method, rotating electromagnetic stirs the circumferential laminar motion that makes the fake alloy liquid generation rule, prismatic blade on the crucible inwall has then changed the circumferential laminar motion state of rule of fake alloy liquid, backward angle of inclination beta has applied inside active force to fake alloy liquid on the length of blade direction, makes fake alloy liquid produce around additional laminar motion from the crucible to inside; And downward inclination angle γ has applied the active force that makes progress to fake alloy liquid on width, fake alloy liquid is produced from the crucible bottom to the additional laminar motion on top, like this, by stir can be constantly will around aluminum-based alloy liquid move on to inside, the aluminum-based alloy liquid of bottom is moved on to top, and then stoped the downward precipitation of heavy metal drop and centrifugal gathering partially to be moved.Disclosed β is that 20～30 °, γ are under 35～50 ° of conditions in patent CN1908210, and it is exactly to rely on 6～10 minutes additional laminar motion to realize even distribution that the heavy-fluid in the fake alloy liquid is dripped.
Aluminium-15 magnesia fake alloy liquid is the fake alloy liquid that contains heavy particle of 15wt% magnesia and 85wt% aluminium liquid, and magnesia density is 3.5～3.6g/cm
3, aluminium liquid density is 2.6～2.8g/cm
3Stirring for aluminium-15 magnesia fake alloy liquid, because magnesia is solid phase particles in fake alloy liquid, its even dispersibility is less than the even dispersibility of heavy metal drop, therefore realize that the even distribution of the heavy particle of magnesia in aluminium-15 magnesia fake alloy liquid is more difficult, that is to say, be used for realizing that the heavy particle of magnesia can be longer in the equally distributed mixing time of aluminium-15 magnesia fake alloy liquid, the β that recedes on the disclosed prismatic blade length direction of patent CN1908210 is 20～30 °, downward-sloping γ is under 35～50 ° the condition on the width, at least after needing to stir 11 minutes, just can obtain the aluminium-15 magnesia fake alloy liquid that the heavy uniform particles of magnesia distributes.
For aluminium-15 magnesia fake alloy liquid, realizing under the prerequisite that the heavy uniform particles of magnesia distributes, the time that is used to stir is short more, energy consumption is more little, cost is low more, and the pollution that aluminium-15 magnesia fake alloy liquid is subjected to is also few more, and its quality is high more, can realize that therefore the mixing time of the aluminium-15 magnesia fake alloy liquid that the heavy uniform particles of magnesia distributes is short more good more.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency of existing stirring means " mixing time is long ", a kind of stirring means that can realize the aluminium-15 magnesia fake alloy liquid that the heavy uniform particles of magnesia distributes fast is provided, further shortens the mixing time that realizes that the heavy uniform particles of magnesia distributes.
The technical solution adopted for the present invention to solve the technical problems is: adopt prismatic blade crucible+electromagnetic agitation method, at the β that recedes on the prismatic blade length direction is that downward-sloping γ is under 58～60 ° the condition on 8～10 °, width, and aluminium-15 magnesia fake alloy liquid is stirred.
The invention has the beneficial effects as follows: for the particle in the fake alloy liquid, want to finish as early as possible its dispersion in fake alloy liquid, must strengthen stirring intensity.In prismatic blade crucible+electromagnetic agitation method, increase along with blade γ, the intensity of variation of the laminar motion state of fake alloy liquid after flowing through blade increases gradually, when γ increases to certain value, except producing additional laminar motion, also will produce the additional turbulent motion of fake alloy liquid, should have profound part stirring and peptizaiton to the particle in the fake alloy liquid by additional turbulent motion, the present invention utilizes the additional turbulent motion that produces after β and the γ optimum organization further to promote the even distribution of the heavy particle of magnesia in fake alloy liquid, thereby has reached the purpose that shortens mixing time.Utilize the present invention, aluminium-15 magnesia fake alloy liquid is stirred, realizing that the mixing time that the heavy uniform particles of magnesia distributes can shorten to 7 minutes, is that 20～30 °, γ are that 35～50 ° the shortest mixing time shortened 36% in 11 minutes than the β that adopts the CN1908210 patent disclosure.
Description of drawings
Fig. 1 stirs the front view of aluminium-15 magnesia fake alloy liquid device for the inventive method.
Among the figure, electromagnetic pole is to 1, graphite crucible 2, and prismatic blade 3, loam cake 4, Ar tracheae 5 stops up 6, outer cover 7, fake alloy liquid 8, underframe 9.
Fig. 2 stirs the A-A partial view of aluminium-15 magnesia fake alloy liquid device for the inventive method.
Fig. 3 stirs the B-B partial view of aluminium-15 magnesia fake alloy liquid device for the inventive method.
Fig. 4 is the microstructure of the aluminium-15 magnesia fake alloy liquid of employing the inventive method stirring.
The specific embodiment
As follows to specifying of the inventive method stirring aluminium-15 magnesia fake alloy liquid device in conjunction with the accompanying drawings:
The agitating device of aluminium-15 magnesia fake alloy liquid comprises: rotating electromagnetic agitating device, graphite crucible 2, loam cake 4, Ar tracheae 5, obstruction 6, underframe 9.
Three pairs of electromagnetic poles of rotating electromagnetic agitating device are distributed on around the graphite crucible 21, and the distance between the graphite crucible outer wall is 5mm, and electromagnetic pole adds outer cover 7 to 1 outside.
Ar tracheae 5 is fixed in the hole of loam cake 4, stops up 6 and is positioned at graphite crucible 2 bottoms.
Graphite crucible 2 adopts mechanical connection manner to be fixed on the underframe 9, is distributed with prismatic blade 3 on its inwall, and prismatic blade 3 adopts mechanical connection manner to be fixed on graphite crucible 2 inwalls.Prismatic blade 3 is horizontal layer and distributes on graphite crucible 2 differing heights, the interval a of undermost prismatic blade 3 bottoms and graphite crucible 2 inner bottom surfaces is 10mm, and the interval b between the adjacent straight blade layer is 20mm.In same prismatic blade layer, the root of three prismatic blades 3 is 120 ° in the interval that makes progress in week and is evenly distributed on graphite crucible 2 inwalls that prismatic blade 3 length c are graphite crucible 2 radiuses, and width d is 1/4th of graphite crucible 2 radiuses.Each prismatic blade 3, in the longitudinal direction, its head is on the basis of pointing to graphite crucible 2 horizontal circle center, flow direction along fake alloy liquid 8 recedes, prismatic blade 3 is 8～10 ° with the angle β of its root and the graphite crucible 2 horizontal circumference lines of centres, so that constantly fake alloy liquid 8 is on every side moved on to inside; On width, in face of the preceding blade of fake alloy liquid 8 circumferential flow relatively the downward-sloping γ of back blade be 58～60 ° so that constantly the fake alloy liquid 8 of bottom is moved on to top.δ is 60 ° of evenly distributions to its root of the projection of prismatic blade 3 on same horizontal plane in the adjacent straight blade layer making progress in week at interval.
The stirring means of a kind of aluminium-15 magnesia fake alloy liquid, adopting prismatic blade crucible+electromagnetic agitation method promptly to adopt conventional rotating electromagnetic stirring to be furnished with the prismatic blade graphite crucible mode that combines with inwall stirs the aluminium-15 magnesia fake alloy liquid that contains the heavy particle of 15wt% magnesia, utilize rotating electromagnetic to stir and make aluminium-15 magnesia fake alloy liquid produce circumferential movement, utilize the prismatic blade on the crucible inwall, constantly aluminium-15 magnesia fake alloy liquid is on every side moved on to inside, aluminium-15 magnesia the fake alloy liquid of bottom is moved on to top, thereby stop the downward precipitation and the centrifugal poly-partially motion of the heavy particle of magnesia, obtain the aluminium-15 magnesia fake alloy liquid that the heavy uniform particles of magnesia distributes, may further comprise the steps:
Embodiment one, the β that recedes on the prismatic blade length direction are when downward-sloping γ is 60 ° on 8 °, width, realize that the mixing time that the heavy uniform particles of magnesia distributes is 6 minutes and 50 seconds.
Embodiment two, the β that recedes on the prismatic blade length direction are when downward-sloping γ is 59 ° on 9 °, width, realize that the mixing time that the heavy uniform particles of magnesia distributes is 6 minutes and 30 seconds.
Embodiment three, the β that recedes on the prismatic blade length direction are when downward-sloping γ is 58 ° on 10 °, width, realize that the mixing time that the heavy uniform particles of magnesia distributes is 7 minutes.
Embodiment four, the β that recedes on the prismatic blade length direction are when downward-sloping γ is 60 ° on 10 °, width, realize that the mixing time that the heavy uniform particles of magnesia distributes is 6 minutes and 50 seconds.
Embodiment five, the β that recedes on the prismatic blade length direction are when downward-sloping γ is 58 ° on 8 °, width, realize that the mixing time that the heavy uniform particles of magnesia distributes is 6 minutes and 40 seconds.
As seen, at the β that recedes on the prismatic blade length direction is that downward-sloping γ is under 58～60 ° of conditions on 8～10 °, width, aluminium-15 magnesia fake alloy liquid is stirred, realize that the mixing time that the heavy uniform particles of magnesia distributes can shorten to 7 minutes.
Accompanying drawing 4 is the microstructure of the aluminium-15 magnesia fake alloy liquid of employing the inventive method stirring.Darker regions is an aluminum substrate among the figure, and light areas is the heavy particle of magnesia, and as seen, the heavy distribution of particles of magnesia is very even.As seen, the present invention can realize the even distribution of the heavy particle of magnesia in the aluminium-15 magnesia fake alloy liquid fast.
Claims (1)
1. the stirring means of aluminium-15 a magnesia fake alloy liquid, adopting prismatic blade crucible+electromagnetic agitation method promptly to adopt conventional rotating electromagnetic stirring to be furnished with the prismatic blade graphite crucible mode that combines with inwall stirs the aluminium-15 magnesia fake alloy liquid that contains the heavy particle of 15wt% magnesia, utilize rotating electromagnetic to stir and make aluminium-15 magnesia fake alloy liquid produce circumferential movement, utilize the prismatic blade on the crucible inwall, constantly aluminium-15 magnesia fake alloy liquid is on every side moved on to inside, aluminium-15 magnesia the fake alloy liquid of bottom is moved on to top, thereby stop the downward precipitation and the centrifugal poly-partially motion of the heavy particle of magnesia, obtain the aluminium-15 magnesia fake alloy liquid that the heavy uniform particles of magnesia distributes, may further comprise the steps:
Step 1 is poured fake alloy liquid into graphite crucible;
Step 2 covers loam cake, connects Ar gas with anti-oxidation;
Step 3 starts the rotating electromagnetic agitating device fake alloy liquid in the graphite crucible is stirred;
It is characterized in that the prismatic blade β that recedes in the longitudinal direction is 8～10 °, downward-sloping γ is 58～60 ° on width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010599514 CN102022923A (en) | 2010-12-22 | 2010-12-22 | Method for stirring aluminum-15 magnesium oxide pseudo-alloy liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010599514 CN102022923A (en) | 2010-12-22 | 2010-12-22 | Method for stirring aluminum-15 magnesium oxide pseudo-alloy liquid |
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| CN102022923A true CN102022923A (en) | 2011-04-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919433A (en) * | 2006-08-16 | 2007-02-28 | 北京交通大学 | Agitation method and apparatus for fake alloy liquid comprising lightweight solid particle |
| CN101475239A (en) * | 2009-01-12 | 2009-07-08 | 上海环境保护有限公司 | Automatic feeding apparatus preparing pool for powdered activated charcoal |
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- 2010-12-22 CN CN 201010599514 patent/CN102022923A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919433A (en) * | 2006-08-16 | 2007-02-28 | 北京交通大学 | Agitation method and apparatus for fake alloy liquid comprising lightweight solid particle |
| CN101475239A (en) * | 2009-01-12 | 2009-07-08 | 上海环境保护有限公司 | Automatic feeding apparatus preparing pool for powdered activated charcoal |
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Application publication date: 20110420 |