CN102072667A - Method for stirring nickel-6.5 silicon nitride fake alloy liquid - Google Patents
Method for stirring nickel-6.5 silicon nitride fake alloy liquid Download PDFInfo
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- CN102072667A CN102072667A CN 201010599495 CN201010599495A CN102072667A CN 102072667 A CN102072667 A CN 102072667A CN 201010599495 CN201010599495 CN 201010599495 CN 201010599495 A CN201010599495 A CN 201010599495A CN 102072667 A CN102072667 A CN 102072667A
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Abstract
The invention discloses a method for stirring nickel-6.5 silicon nitride fake alloy liquid, and belongs to the field of nickel-6.5 silicon nitride fake alloy liquid stirring research. A straight blade crucible and electromagnetic stirring method is adopted, and under the conditions that the straight blade inclines beta of 33 to 35 degrees forward in the length direction and inclines gamma of 81 to 83 degrees upward in the width direction, the nickel-6.5 silicon nitride fake alloy liquid is stirred, so that silicon nitride particles can be quickly distributed uniformly and the stirring time can be shortened to 8 minutes.
Description
Technical field
The present invention relates to the stirring means of a kind of nickel-6.5 silicon nitride fake alloy liquid.
Background technology
Publication number: CN1919433, denomination of invention: on " a kind of lightweight solid particle fake alloy liquid stirring means and device of containing ", set forth the stirring means of copper-3.5 nickel plating graphite fake alloy liquid, that is, adopting conventional rotating electromagnetic stirring to be furnished with the prismatic blade graphite crucible mode that combines with inwall stirs the copper-3.5 nickel plating graphite fake alloy liquid that contains 3.5wt% nickel plating graphite granule.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, forward angle of inclination beta has applied outside active force to fake alloy liquid on the length of blade direction, and fake alloy liquid has been produced from crucible inside to the additional laminar motion of outside; And the inclination angle γ that makes progress on width has applied downward active force to fake alloy liquid, fake alloy liquid has been produced from crucible top to the additional laminar motion of bottom, like this, by stir can be constantly the fake alloy liquid of inside be moved on to around, the fake alloy liquid on top moved on to the bottom, and then stoped the come-up of particle in the fake alloy liquid and central authorities are poly-partially moves.Disclosed β is that 25 °, γ are under 45 ° of conditions in patent CN1919433, and the particle in the fake alloy liquid is exactly to rely on 13 minutes additional laminar motion to realize even distribution.
Nickel-6.5 silicon nitride fake alloy liquid is the fake alloy liquid that contains 6.5wt% silicon nitride particle and 93.5wt% nickel liquid, stirring for nickel-6.5 silicon nitride fake alloy liquid, because especially the difference between the density is bigger than the difference of copper and nickel plating graphite granule for the rerum natura of nickel and silicon nitride particle, copper liquid density is 8.2～8.9g/cm
3, nickel plating graphite granule density is 4.2～4.4g/cm
3, silicon nitride density is 3.2～3.5g/cm
3, nickel liquid density is 8.5～8.9g/cm
3, therefore realize that the even distribution of silicon nitride particle in nickel-6.5 silicon nitride fake alloy liquid is more difficult, that is to say, be used for realizing that silicon nitride particle can be longer in the equally distributed mixing time of nickel-6.5 silicon nitride fake alloy liquid.
For nickel-6.5 silicon nitride fake alloy liquid, realizing under the equally distributed prerequisite of silicon nitride particle, the time that is used to stir is short more, energy consumption is more little, cost is low more, and the pollution that nickel-6.5 silicon nitride fake alloy liquid is subjected to is also few more, and its quality is high more, therefore can realize that the mixing time of silicon nitride particle equally distributed nickel-6.5 silicon nitride fake alloy liquid 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 silicon nitride particle equally distributed nickel-6.5 silicon nitride fake alloy liquid fast is provided, further shortens and realize the equally distributed mixing time of silicon nitride particle.
The technical solution adopted for the present invention to solve the technical problems is: adopt prismatic blade crucible+electromagnetic agitation method, the γ that is inclined upwardly on the β that turns forward on the prismatic blade length direction is 33～35 °, width under 81～83 ° the condition, stirs nickel-6.5 silicon nitride fake alloy liquid.
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 silicon nitride particle in fake alloy liquid, thereby has reached the purpose that shortens mixing time.Utilize the present invention, nickel-6.5 silicon nitride fake alloy liquid is stirred, realize that the equally distributed mixing time of silicon nitride particle can shorten to 8 minutes, shortened 20% at least again in 10 minutes than the shortest mixing time of CN1919433 patent.
Description of drawings
Fig. 1 stirs the front view of nickel-6.5 silicon nitride 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 nickel-6.5 silicon nitride fake alloy liquid device for the inventive method.
Fig. 3 stirs the B-B partial view of nickel-6.5 silicon nitride fake alloy liquid device for the inventive method.
Fig. 4 is the microstructure of the nickel-6.5 silicon nitride fake alloy liquid of employing the inventive method stirring.
The specific embodiment
As follows to specifying of the inventive method stirring nickel-6.5 silicon nitride fake alloy liquid device in conjunction with the accompanying drawings:
The agitating device of nickel-6.5 silicon nitride 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.
The stirring means of a kind of nickel-6.5 silicon nitride 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 nickel-6.5 silicon nitride fake alloy liquid that contains the 6.5wt% silicon nitride particle, utilize rotating electromagnetic to stir and make nickel-6.5 silicon nitride fake alloy liquid produce circumferential movement, utilize the prismatic blade on the graphite crucible inwall, around constantly nickel-6.5 silicon nitride the fake alloy liquid of inside being moved on to, nickel-6.5 silicon nitride the fake alloy liquid on top is moved on to the bottom, thereby stop the poly-partially motion of come-up and central authorities of silicon nitride particle, obtain silicon nitride particle equally distributed nickel-6.5 silicon nitride fake alloy liquid, may further comprise the steps:
Step 1 is poured fake alloy liquid 8 into graphite crucible 2;
Embodiment one, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 35 °, width when being 83 °, realize that the equally distributed mixing time of silicon nitride particle is 8 minutes.
Embodiment two, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 34 °, width when being 82 °, realize that the equally distributed mixing time of silicon nitride particle is 7 minutes and 30 seconds.
Embodiment three, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 34 °, width when being 81 °, realize that the equally distributed mixing time of silicon nitride particle is 7 minutes and 40 seconds.
Embodiment four, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 33 °, width when being 83 °, realize that the equally distributed mixing time of silicon nitride particle is 7 minutes and 50 seconds.
Embodiment five, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 33 °, width when being 82 °, realize that the equally distributed mixing time of silicon nitride particle is 7 minutes and 40 seconds.
As seen, the γ that is inclined upwardly on the β that turns forward on the prismatic blade length direction is 33～35 °, width is under 81～83 ° of conditions, nickel-6.5 silicon nitride fake alloy liquid is stirred, realize that the equally distributed mixing time of silicon nitride particle can shorten to 8 minutes.
Accompanying drawing 4 is the microstructure of the nickel-6.5 silicon nitride fake alloy liquid of employing the inventive method stirring.Darker regions is a Ni substrate among the figure, and light areas is a silicon nitride particle, and as seen, silicon nitride particle distributes very evenly.As seen, the present invention can realize the even distribution of silicon nitride particle in the nickel-6.5 silicon nitride fake alloy liquid fast.
Claims (1)
1. the stirring means of nickel-6.5 a silicon nitride 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 nickel-6.5 silicon nitride fake alloy liquid that contains the 6.5wt% silicon nitride particle, utilize rotating electromagnetic to stir and make nickel-6.5 silicon nitride fake alloy liquid produce circumferential movement, utilize the prismatic blade on the graphite crucible inwall, around constantly nickel-6.5 silicon nitride the fake alloy liquid of inside being moved on to, nickel-6.5 silicon nitride the fake alloy liquid on top is moved on to the bottom, thereby stop the poly-partially motion of come-up and central authorities of silicon nitride particle, obtain silicon nitride particle equally distributed nickel-6.5 silicon nitride fake alloy liquid, 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 turns forward in the longitudinal direction is 33～35 °, the γ that is inclined upwardly on width is 81～83 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010599495 CN102072667A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-6.5 silicon nitride fake alloy liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010599495 CN102072667A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-6.5 silicon nitride fake alloy liquid |
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| CN 201010599495 Pending CN102072667A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-6.5 silicon nitride fake alloy liquid |
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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
- 2010-12-22 CN CN 201010599495 patent/CN102072667A/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: 20110525 |