CN1851035A - Selective metal drop size spray-deposition method - Google Patents
Selective metal drop size spray-deposition method Download PDFInfo
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- CN1851035A CN1851035A CNA2006100100876A CN200610010087A CN1851035A CN 1851035 A CN1851035 A CN 1851035A CN A2006100100876 A CNA2006100100876 A CN A2006100100876A CN 200610010087 A CN200610010087 A CN 200610010087A CN 1851035 A CN1851035 A CN 1851035A
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Abstract
The ejecting and sediment method choosing the size of the metal liquid drop deals with the ejecting sediment method. Aiming to the drawback of existing ejecting sediment method incapable of gain the high quality billet, the invention provides the ejecting sediment method of choosing the size of the metal liquid drop, the metal melting liquid (1) and the charge source (2) in the ejecting sediment setting are connected, the electric field or the magnetic field or the electromagnetism field is fixed between the nozzle (3) and the billet (4), the direction of the electric field and the magnetic field is vertical with the prolonged line of the axes of the metal melting drop nozzle (3), the placed electric field power and the magnetic field power of the metal liquid drop gushed from the nozzle (3) are controlled to reach the reverse direction. The invention adopt the restricting method of connecting the electric field, the magnetic field or the electromagnetism field, the metal liquid drop ejected from the ejecting sediment can be separated, the separated little size of the metal liquid drop is used for producing the billet to improved the quality of the billet highly.
Description
Technical field
The present invention relates to a kind of spray-deposition method.
Background technology
Existing spray-deposition method can only be made simple spray up n., molten drop for the different size after the atomizing, existing spray-deposition method does not have separation function, as everyone knows, metal drop size on depositing to billet evenly, when more tiny, the quality of billet just can improve, yet existing spray-deposition method can not separate the atomization metal drop with different-grain diameter, promptly the molten drop of the particle diameter that varies in size of atomizing back ejection must all deposit on the billet, and this just makes quality product to improve.
Summary of the invention
Can not obtain the drawback of high quality billet at existing spray-deposition method, the invention provides and a kind ofly can the molten drop in the course of injection be carried out isolating spray-deposition method by the particle diameter difference.
A kind of spray-deposition method of selective metal drop size is, molten metal 1 in the jet deposition equipment is connected with Charge Source 2, between molten metal nozzle 3 and billet 4 electric field or magnetic field are set, direction of an electric field or field direction are vertical with the extended line of molten metal nozzle 3 axis; The spray-deposition method of another kind of selective metal drop size is, molten metal 1 in the jet deposition equipment is connected with Charge Source 2, between molten metal nozzle 3 and billet 4, electric field and magnetic field are set, direction of an electric field is all vertical with the molten metal jet axis with field direction, and control is opposite from the direction of the suffered electrical forces of molten drop of nozzle 3 ejection and magnetic field force.
The present invention adopts electric field, magnetic field and electromagnetic field to unite the method for constraint, can the molten drop with different-grain diameter that eject in the jet deposition be separated, thereby can easily control the droplet jet that has than small particle size to billet, therefore can obtain high-quality product, be beneficial to and apply.
Description of drawings
Fig. 1 is existing jet deposition device structure synoptic diagram, Fig. 2 is the structural representation of embodiment one, Fig. 3 is the structural representation of embodiment three, Fig. 4 is embodiment five described structural representations, Fig. 5 is embodiment six described structural representations, Fig. 6 is embodiment seven described structural representations, and Fig. 7 is the force analysis synoptic diagram that the time spent drop is made in electric field and magnetic field simultaneously, and Fig. 8 is the vertical view of Fig. 3.
Embodiment
Embodiment one: present embodiment is a kind of spray-deposition method of selective metal drop size.Existing spray-deposition method is the molten metal 1 of packing in crucible 6, with reference to Fig. 1, is arranged on the below of crucible 6 with spraying cavity 7, and molten metal 1 is through nozzle 3 ejections of crucible lower end, and ' going up deposition gets final product to be ejected into billet 4 after atomization system 10 atomizings.Because existing injection method can not separate the molten drop of different-grain diameter, so the metallic particles that varies in size that the atomizing back sprays from nozzle 3 can only selectively not advance and be ejected on the billet, because granular size directly affects deposition quality, so present embodiment makes the molten metal 1 in the existing jet deposition equipment be connected with Charge Source 2, purpose is to make molten metal 1 charged, between the molten metal nozzle 3 of existing jet deposition equipment and billet 4 electric field is set then, the direction of electric field is vertical with the extended line of molten metal nozzle 3 axis.Like this, charged molten metal 1 promptly is subjected to the effect of transverse electric field force after nozzle 3 ejection, because the metallic particles of different-grain diameter is done the deflection of different angles to same direction under the electrical forces effect, so by the position of adjusting billet 4 molten drop with less particle size range is ejected on the billet, thereby has improved the billet quality.The described Charge Source 2 of present embodiment is electrizers, also can be that other can make the charged device of molten metal.The method to set up of described electric field is, with reference to Fig. 2, in the both sides of molten metal jet axis a metal sheet 8 is set respectively, two metal sheets 8 are connected with negative pole with the positive pole of power supply respectively, will form electric field between the metal sheet of positively charged and the electronegative metal sheet, present embodiment makes the direction of electric field vertical with the molten metal jet axis.When reality was used, deflection up or down takes place the direction of electric field also can play centrifugation to the different-grain diameter metallic particles, so all within protection scope of the present invention.
Embodiment two: present embodiment and embodiment one difference are, the setting of described electric field is that a metal sheet 8 is connected with the positive pole of power supply, another metal sheet is connected with ground, and metal sheet is connected with ground and replaces being connected with negative pole, has convenient and simple maneuverable advantage.
Embodiment three: present embodiment and embodiment one, two differences are to replace electric field with magnetic field.Molten metal 1 in the jet deposition equipment is connected with Charge Source 2, with reference to Fig. 3, between molten metal nozzle 3 and billet 4 magnetic field is set, field direction is vertical with the extended line of molten metal nozzle 3 axis.The described magnet of present embodiment is permanent magnet, with reference to Fig. 3, Fig. 8, the both sides that the N utmost point and the S utmost point of permanent magnet is separately positioned on molten metal nozzle 3 axis extended lines, just produce magnetic field between the N utmost point and the S utmost point like this, magnetic field force promptly can exert an influence to the live metal particle that ejects it is deflected, thereby realizes that the metallic particles to different-grain diameter identical with embodiment one carries out isolating purpose.Equally, when reality was used, deflection up or down takes place the direction in magnetic field also can play centrifugation to the different-grain diameter metallic particles, so all within protection scope of the present invention.
Embodiment four: present embodiment and embodiment three differences are that described magnet is electro-magnet.With respect to permanent magnet, electro-magnet has the effect of controlling magnetic field power size, can adjust according to different situations, and applying flexible can better be realized described purpose.
It is as follows that embodiment one is carried out isolating principle to embodiment four described electric fields or magnetic field to the atomization metal drop:
If the atomization metal drop is spherical, its radius is R, and density is ρ, quality is m, and universal gravity constant is g, and gravity is G, and to establish its charged area density be σ (irrelevant with droplet radius), and electrically charged number is q, and suffered electrical forces is F, magnetic field force is f, and the acceleration that power produces is a, and strength of electric field is E, magnetic induction is B, its jet velocity is v, and the distance of its disalignment is S under the effect of power, and being ejected into the time that deposits on the billet from nozzle is t (the certain t of equipment is a constant).
A. only under electric field constraint (embodiment one, two described schemes), a certain molten drop electrical forces F=q * E=4 π R
2σ E, and quality of molten metal is m=4/3 π R
3ρ is so the acceleration that electrical forces produces is
And offset displacement S=1/2at
2, when electric field strength E one regularly, so S=k * 1/R (k is a constant) also is that side-play amount and radius are inversely proportional to, inclined to one side far away more of the molten drop that radius is more little is so can play the effect that the molten drop with different size separates.
B. (embodiment three, four described schemes) and the effect under electric field action are similar under the action of a magnetic field, finally also can obtain S=k
1* 1/R (k
1Be constant), so almost consistent with result under electric field action under the action of a magnetic field.
Embodiment five: be that with embodiment one, two, three, four differences present embodiment is provided with electric field and magnetic field simultaneously between nozzle 3 and billet 4.With reference to Fig. 4, molten metal 1 in the jet deposition equipment is connected with Charge Source 2, between nozzle 3 and billet 4, electric field and magnetic field are set, all the extended line with molten metal nozzle 3 axis is vertical with field direction for direction of an electric field, and control is opposite from the direction of the suffered electrical forces of molten drop of nozzle 3 ejection and magnetic field force.Described magnetic field can produce with coil, and the size of its magnetic induction will be determined according to the size of strength of electric field, in the time will controlling its magnetic force size, can realize by changing the size of current that feeds wherein.If atomization zone electric metal drop is spherical, gravity is G, and electrically charged number is q, and suffered electrical forces is F, magnetic field force is f, and strength of electric field is E, and magnetic induction is B, its jet velocity is v, a certain molten drop electrical forces F=q * E, suffered magnetic field force is f=B * v * q.Because molten drop is less, it is again downward injection, therefore can ignore influence of gravity, then (during F=f) live metal drop can vertically pass through when live metal drop stress balance, the substitution formula calculates and can get: F=q * E=f=B * v * q is E=B * v, the molten drop that also promptly only has specific speed could vertically pass through, and in Models of Spray Deposition, the molten drop flight velocity that diameter is more little is fast more, therefore, if set the not deflection of live metal drop of a certain minor diameter, then the drop deflection that size is big more is severe more, has also just played centrifugation.
Embodiment six: be with the aforementioned embodiments difference, present embodiment is placed side by side with injection cavity 7 with the crucible 6 of splendid attire molten metal 1, with reference to Fig. 5, billet 4 be arranged on spray in the cavity 7 and make it and nozzle 3 in the same plane as far as possible, molten metal 1 is laterally sprayed in nozzle 3, control from the suffered electrical forces of molten drop of nozzle 3 ejection and magnetic field force induced direction opposite with the axis normal and the direction of nozzle 3, with reference to Fig. 7, if atomization zone electric metal drop is spherical, its radius is R, density is ρ, quality is m, universal gravity constant is g, gravity is G, and to establish its charged area density be σ (irrelevant with droplet radius), electrically charged number is q, suffered electrical forces is F, magnetic field force is f, and strength of electric field is E, and magnetic induction is B, its jet velocity is v, electrical forces F=q * E that a certain molten drop is suffered, suffered magnetic field force are f=B * v * q, and then the condition of not deflection of live metal drop is: F=f+G, the substitution formula can get: F=q * E=f+G=B * v * q+mg, because q=4 π is R
2σ; M=4/3 π R
3ρ, so abbreviation can get: B * v * σ+(1/3) * ρ * r * g=E * σ, r is very little in the formula, promptly can ignore second on the equal sign left side, so obtain: B * v * σ=E * σ, the molten drop that also promptly only has specific speed, size could vertically pass through, and in Models of Spray Deposition, the molten drop flight velocity that diameter is more little is fast more, therefore, if set the not deflection of live metal drop of a certain minor diameter, then the drop deflection that size is big more is severe more, has also just played centrifugation.
Embodiment seven: present embodiment and aforementioned embodiments difference are, on the basis of the described electric field of aforementioned embodiments, magnetic field or electromagnetic field effect, increase a constrained electric field again, promptly between molten metal nozzle 3 and billet 4, be provided with and the parallel constrained electric field of nozzle 3 axis.The electrical forces that independent constrained electric field produces can make the live metal drop that ejects all deposit on the billet, but the particle because molten drop is subjected to transverse electric field force or magnetic field force or electromagnetic force effect simultaneously with different-grain diameter separates, so, when reality is used, can in spraying cavity 7, be set up in parallel two or more billets 4, with reference to Fig. 6, like this, metallic particles for the different-grain diameter scope of separating can deposit on the different billets, to satisfy the different operating needs of different mass billet, avoided waste of material again.The method to set up of described constrained electric field is, with reference to Fig. 6, the end that direct voltage source is consistent with Charge Source polarity links to each other with nozzle 3, and the opposite polarity end of direct voltage source and Charge Source is linked to each other with billet 4 to get final product.
Claims (10)
1. the spray-deposition method of a selective metal drop size, it is characterized in that making the molten metal (1) in the jet deposition equipment to be connected with Charge Source (2), between molten metal nozzle (3) and billet (4) electric field or magnetic field are set, direction of an electric field or field direction are vertical with the extended line of molten metal nozzle (3) axis.
2. the spray-deposition method of a selective metal drop size, it is characterized in that making the molten metal (1) in the jet deposition equipment to be connected with Charge Source (2), between molten metal nozzle (3) and billet (4), electric field and magnetic field are set, direction of an electric field is all vertical with the molten metal jet axis with field direction, and control from the suffered electrical forces of molten drop of nozzle (3) ejection and magnetic field force induced direction opposite.
3. the spray-deposition method of a kind of selective metal drop size according to claim 2, it is characterized in that making the crucible (6) of splendid attire molten metal (1) placed side by side with injection cavity (7), control molten metal (1) is laterally ejection in the nozzle (3), control from the suffered electrical forces of molten drop of nozzle (3) ejection and magnetic field force induced direction opposite with the axis normal and the direction of nozzle (3).
4. according to the spray-deposition method of claim 1,2 or 3 described a kind of selective metal drop sizes, it is characterized in that described Charge Source (2) is an electrizer.
5. according to the spray-deposition method of claim 1,2 or 3 described a kind of selective metal drop sizes, the method to set up that it is characterized in that described electric field is, in the both sides of molten metal jet axis a metal sheet (8) is set respectively, two metal sheets (8) are connected with negative pole with the positive pole of power supply respectively.
6. according to the spray-deposition method of claim 1,2 or 3 described a kind of selective metal drop sizes, the method to set up that it is characterized in that described electric field is, in the both sides of molten metal jet axis a metal sheet (8) is set respectively, a metal sheet (8) is connected with the positive pole of power supply, and another metal sheet (8) is connected with ground.
7. according to the spray-deposition method of claim 1,2 or 3 described a kind of selective metal drop sizes, it is characterized in that the method to set up in described magnetic field is, the N utmost point and the S utmost point of magnet is set respectively in the both sides of molten metal jet axis.
8. the spray-deposition method of a kind of selective metal drop size according to claim 7 is characterized in that described magnet is permanent magnet or electro-magnet.
9. according to the spray-deposition method of claim 1,2 or 3 described a kind of selective metal drop sizes, it is characterized in that between nozzle (3) and billet (4), being provided with and the parallel constrained electric field of nozzle (3) axis.
10. the spray-deposition method of a kind of selective metal drop size according to claim 9, the method to set up that it is characterized in that constrained electric field is, the end that direct voltage source is consistent with Charge Source polarity links to each other with nozzle (3), and the opposite polarity end of direct voltage source and Charge Source is linked to each other with billet (4).
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| CNB2006100100876A CN100455696C (en) | 2006-05-26 | 2006-05-26 | Selective metal drop size spray-deposition method |
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| CNB2006100100876A CN100455696C (en) | 2006-05-26 | 2006-05-26 | Selective metal drop size spray-deposition method |
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| CN100455696C CN100455696C (en) | 2009-01-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875032B (en) * | 2009-04-30 | 2013-03-13 | 宝山钢铁股份有限公司 | Deposit preform injection moulding device with additional magnetic filed |
| CN104582877A (en) * | 2012-03-23 | 2015-04-29 | 苹果公司 | Continuous moldless fabrication of amorphous alloy ingots |
| CN108748975A (en) * | 2018-07-17 | 2018-11-06 | 中南大学 | A kind of nano high-precision increasing material manufacturing equipment |
| CN111283200A (en) * | 2020-03-23 | 2020-06-16 | 宁波财经学院 | Electromagnetically-constrained aluminum alloy component micro-droplet ejector |
| CN112620642A (en) * | 2020-12-29 | 2021-04-09 | 深圳市福英达工业技术有限公司 | Centrifugal atomization device and method for preparing high-temperature high-surface-tension metal powder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1275442A1 (en) * | 2001-07-13 | 2003-01-15 | Stichting voor de Technische Wetenschappen | Electrostatic spray deposition (ESD) of biocompatible coatings on metallic substrates |
| CN1209217C (en) * | 2003-05-22 | 2005-07-06 | 上海交通大学 | Reciprocating jet control shaping technology |
-
2006
- 2006-05-26 CN CNB2006100100876A patent/CN100455696C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875032B (en) * | 2009-04-30 | 2013-03-13 | 宝山钢铁股份有限公司 | Deposit preform injection moulding device with additional magnetic filed |
| CN104582877A (en) * | 2012-03-23 | 2015-04-29 | 苹果公司 | Continuous moldless fabrication of amorphous alloy ingots |
| US9987685B2 (en) | 2012-03-23 | 2018-06-05 | Apple Inc. | Continuous moldless fabrication of amorphous alloy pieces |
| CN108748975A (en) * | 2018-07-17 | 2018-11-06 | 中南大学 | A kind of nano high-precision increasing material manufacturing equipment |
| CN111283200A (en) * | 2020-03-23 | 2020-06-16 | 宁波财经学院 | Electromagnetically-constrained aluminum alloy component micro-droplet ejector |
| CN112620642A (en) * | 2020-12-29 | 2021-04-09 | 深圳市福英达工业技术有限公司 | Centrifugal atomization device and method for preparing high-temperature high-surface-tension metal powder |
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| CN100455696C (en) | 2009-01-28 |
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