CN102091557A - Method for stirring nickel-3.5 boron nitride pseudo molten alloy - Google Patents
Method for stirring nickel-3.5 boron nitride pseudo molten alloy Download PDFInfo
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- CN102091557A CN102091557A CN 201010599570 CN201010599570A CN102091557A CN 102091557 A CN102091557 A CN 102091557A CN 201010599570 CN201010599570 CN 201010599570 CN 201010599570 A CN201010599570 A CN 201010599570A CN 102091557 A CN102091557 A CN 102091557A
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Abstract
The invention discloses a method for stirring nickel-3.5 boron nitride pseudo molten alloy, and belongs to the field of nickel-3.5 boron nitride pseudo molten alloy stirring research. The nickel-3.5 boron nitride pseudo molten alloy is stirred by adopting a method of straight blade crucible and electromagnetic stirring under the conditions that the forward inclination beta is 32 to 34 degrees in the length direction of a straight blade and the upward inclination gamma is 73 to 75 degrees in the width direction. Uniform distribution of boron nitride granules can be quickly realized, 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-3.5 boron 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-3.5 boron nitride fake alloy liquid is the fake alloy liquid that contains 3.5wt% boron nitride particle and 96.5wt% nickel liquid, stirring for nickel-3.5 boron 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 boron nitride particle, copper liquid density is 8.2～8.9g/cm
3, nickel plating graphite granule density is 4.2～4.4g/cm
3, boron nitride density is 2.1～2.3g/cm
3, nickel liquid density is 8.5～8.9g/cm
3, therefore realize that the even distribution of boron nitride particle in nickel-3.5 boron nitride fake alloy liquid is more difficult, that is to say, be used for realizing that boron nitride particle can be longer in the equally distributed mixing time of nickel-3.5 boron nitride fake alloy liquid.
For nickel-3.5 boron nitride fake alloy liquid, realizing under the equally distributed prerequisite of boron 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-3.5 boron 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 boron nitride particle equally distributed nickel-3.5 boron 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 boron nitride particle equally distributed nickel-3.5 boron nitride fake alloy liquid fast is provided, further shortens and realize the equally distributed mixing time of boron 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 32～34 °, width under 73～75 ° the condition, stirs nickel-3.5 boron 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 boron nitride particle in fake alloy liquid, thereby has reached the purpose that shortens mixing time.Utilize the present invention, nickel-3.5 boron nitride fake alloy liquid is stirred, realize that the equally distributed mixing time of boron 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-3.5 boron 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-3.5 boron nitride fake alloy liquid device for the inventive method.
Fig. 3 stirs the B-B partial view of nickel-3.5 boron nitride fake alloy liquid device for the inventive method.
Fig. 4 is the microstructure of the nickel-3.5 boron nitride fake alloy liquid of employing the inventive method stirring.
The specific embodiment
As follows to specifying of the inventive method stirring nickel-3.5 boron nitride fake alloy liquid device in conjunction with the accompanying drawings:
The agitating device of nickel-3.5 boron 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.
The stirring means of a kind of nickel-3.5 boron 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-3.5 boron nitride fake alloy liquid that contains the 3.5wt% boron nitride particle, utilize rotating electromagnetic to stir and make nickel-3.5 boron nitride fake alloy liquid produce circumferential movement, utilize the prismatic blade on the graphite crucible inwall, around constantly nickel-3.5 boron nitride the fake alloy liquid of inside being moved on to, nickel-3.5 boron 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 boron nitride particle, obtain boron nitride particle equally distributed nickel-3.5 boron nitride fake alloy liquid, may further comprise the steps:
Embodiment one, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 33 °, width when being 74 °, realize that the equally distributed mixing time of boron nitride particle is 7 minutes and 30 seconds.
Embodiment two, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 33 °, width when being 73 °, realize that the equally distributed mixing time of boron nitride particle is 7 minutes and 40 seconds.
Embodiment three, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 32 °, width when being 75 °, realize that the equally distributed mixing time of boron nitride particle is 8 minutes.
Embodiment four, the β that turns forward on the prismatic blade length direction are to be inclined upwardly γ on 34 °, width when being 75 °, realize that the equally distributed mixing time of boron 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 34 °, width when being 74 °, realize that the equally distributed mixing time of boron 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 32～34 °, width is under 73～75 ° of conditions, nickel-3.5 boron nitride fake alloy liquid is stirred, realize that the equally distributed mixing time of boron nitride particle can shorten to 8 minutes.
Claims (1)
1. the stirring means of nickel-3.5 a boron 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-3.5 boron nitride fake alloy liquid that contains the 3.5wt% boron nitride particle, utilize rotating electromagnetic to stir and make nickel-3.5 boron nitride fake alloy liquid produce circumferential movement, utilize the prismatic blade on the graphite crucible inwall, around constantly nickel-3.5 boron nitride the fake alloy liquid of inside being moved on to, nickel-3.5 boron 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 boron nitride particle, obtain boron nitride particle equally distributed nickel-3.5 boron 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 32～34 °, the γ that is inclined upwardly on width is 73～75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010599570 CN102091557A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-3.5 boron nitride pseudo molten alloy |
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| CN 201010599570 CN102091557A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-3.5 boron nitride pseudo molten alloy |
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| CN 201010599570 Pending CN102091557A (en) | 2010-12-22 | 2010-12-22 | Method for stirring nickel-3.5 boron nitride pseudo molten alloy |
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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 201010599570 patent/CN102091557A/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: 20110615 |