CN203003153U - Micro metal drop forming device - Google Patents
Micro metal drop forming device Download PDFInfo
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- CN203003153U CN203003153U CN 201320004815 CN201320004815U CN203003153U CN 203003153 U CN203003153 U CN 203003153U CN 201320004815 CN201320004815 CN 201320004815 CN 201320004815 U CN201320004815 U CN 201320004815U CN 203003153 U CN203003153 U CN 203003153U
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Abstract
The utility model discloses a micro metal drop forming device which is used for solving the technical problem that the size of the metal drops formed by ejecting of the conventional metal drop ejection device is difficult to control. According to the technical scheme, a spherical energy focalizer which is axially inwards concave is designed at the lower end of a cylindrical rod 13-b of a T-shaped bar 13; due to the focusing function of the T-shaped bar energy focalizer, the stress wave energy acts on the free liquid level of the nozzle outlet below a crucible in a centralized mode so as to generate drops, the micro-drop ejection process is controlled by stress waves generated when an impact rod impacts the T-shaped bar, the metal drop size is determined by the loaded stress wave; through the related parameters for generation of the stress wave are controlled, the metal drops of which the diameter is smaller than the diameter of the orifice can be ejected, and the aim of controlling the size of the metal drops is fulfilled.
Description
Technical field
The utility model relates to a kind of metal drop and forms device, particularly relates to a kind of minute metallic molten drop and forms device.
Background technology
The metal droplet spraying technique is to utilize the certain driving pressure of generation in the metal fluid of injection apparatus in crucible, force the interior metal fluid material of crucible to eject from tiny nozzle and form single minute metallic molten drop, with the accurate distribution and fixed point deposition that realizes the trace meter material, have that automaticity is high, cost is low, pollution-free, noncontact and utilization rate of raw materials advantages of higher, have broad application prospects in fields such as complicated minute metallic spare shaping, three-dimension packaging, microcircuit printing speeds.
With reference to Fig. 1, document " Apparatus and method for generating droplets; Chandra Sanjeev; Jivraj Rahim.United States Patent:US6446878; 2002 " discloses a kind of metal drop injection apparatus, comprises impulse generator 1, magnetic valve 2, heating element heater 3, tiny nozzle 5, crucible 7 and threeway gas bleeder valve 17.Wherein, heating element heater 3 is used for heating crucible 7, tiny nozzle 5 is positioned at crucible 7 bottoms, threeway gas bleeder valve 17 is fixed on crucible 7 tops, a road of threeway gas bleeder valve 17 is ined succession and is tapped into tracheae 18, magnetic valve 2 is installed on air inlet pipe 18, the break-make of magnetic valve 2 is controlled by impulse generator 1, this device adopts Compressed Gas as drive source, control the moment break-make of magnetic valve 2 by impulse generator 1, produce pulse on interior molten metal 6 liquid levels of crucible 7, force the interior molten metal 6 of crucible 7 to spray from bottom tiny nozzle 5, form small metal drop 4.This pulse is subject to the impact of the many factors such as crucible 7 internal cavities volumes, threeway gas bleeder valve 17 leakage port sizes, back pressure gas size, and accuracy of spray is limited to.
With reference to Fig. 2, the mechanism that the disclosed metal drop injection apparatus of document produces metal drop is: metal fluid externally sprays the formation jet under pressure-acting from spray orifice, after this crucible internal pressure reduces, make the nozzle-fluid velocity of spray orifice inside reduce, and the jet front end moves forward due to effect of inertia, thereby make metal jet produce " necking down " phenomenon, final fracture is molten drop.In this process, jet diameter and the nozzle diameter of injection are close, and the molten drop diameter of generation is approximately generally the twice of injection diameter, therefore, utilize this device to be difficult to generation less than the metal drop of injection diameter size.
In view of above analysis, there is a following difficult problem in the disclosed metal drop injection apparatus of document in the metal droplet course of injection: (1) injection apparatus adopts pulse gas as drive source, because pulse pressure in crucible in course of injection is accurately controlled comparatively difficulty, make metal droplet spray more difficult control; (2) metal drop less than jet size is given birth in the injection apparatus difficult labour, and the size of the metal droplet of injection is restricted.
Summary of the invention
Spray the unmanageable deficiency of formation metal drop size in order to overcome existing metal drop injection apparatus, the utility model provides a kind of minute metallic molten drop to form device.This device is by the energy focalizer of T-shape bar lower end, and the stress wave concentration of energy of impact bar being impacted the generation of T-shape bar acts on jet expansion free surface place, crucible below a bit to produce droplet.Because droplet ejection process is controlled by stress wave, therefore, the diameter dimension of metal drop can be determined by the stress wave that loads.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of minute metallic molten drop forms device, comprise heating element heater 3, nozzle 5 and crucible 7, be characterized in also comprising impact bar stroke adjustment scale 8, adjusting knob 9, impact bar 10, coil 11, device upper cover 12, T-shape bar 13 and supply air line 15.Described T-shape bar 13 is connected by the circular steel disc 13-a on top with perpendicular to the cylindrical bar 13-b of circular steel disc and forms, and the lower end of cylindrical bar 13-b is designed with the energy focalizer, and the shape of energy focalizer is the sphere of axial indent.The external diameter of the circular steel disc 13-a diameter on T-shape bar 13 tops and crucible 7 and device upper cover 12 bottoms is identical, the height of cylindrical bar 13-b equates with the height of crucible 7 inwalls, the gap of passing through for molten metal 6 is left in cylindrical bar 13-b lower end and crucible 7 bottoms, circular steel disc 13-a is secured in a press between device upper cover 12 and crucible 7, between circular steel disc 13-a and device upper cover 12, heat-barrier material 19 is arranged.Impact bar stroke adjustment scale 8 is the screw rods with scale, and adjusting knob 9 is inside and outside all threaded round nuts.Device upper cover 12 crown centers have the screwed hole that matches with adjusting knob 9 external screw threads, impact bar stroke adjustment scale 8 is threaded connection the composition screw pair with adjusting knob 9, the mode that adjusting knob 9 is threaded connection is fixed in device upper cover 12 tops, can realize the Stroke Control of impact bar 10 by rotary impact throw of lever regulation scale 8; Coil 11 is the hollow cylinders that become by the multiturn copper wire winding, coil 11 is by the hinged middle that vertically is mounted on device upper cover 12 internal circular discs, the stepped permanent magnetism iron that impact bar 10 is comprised of two sections cylinders, the upper end of impact bar 10 is S utmost points, the lower end of impact bar 10 is N utmost points.Impact bar 10 axially is placed in coil 11, the external diameter of impact bar 10 epimeres is greater than the external diameter of coil 11, the external diameter of impact bar 10 hypomeres equates with the internal diameter of coil 11, and coil 11 is partly interference fits with impact bar 10 hypomeres, and coil 11 impact bars 10 play the guiding role.Supply air line 15 is to be formed by the copper pipe bending, and uniform three and the outer wall that pasting respectively crucible 7 extend nozzle 5 places around crucible 7; Heating element heater 3 is an annular resistance-type heating collar, is fixed in around crucible 7.
The beneficial effects of the utility model are: the focussing force of the energy focalizer by T-shape bar lower end, below the stress wave concentration of energy is acted on crucible, the jet expansion free surface is sentenced the generation droplet, droplet ejection process impacts by impact bar the stress wave control that the T-shape bar produces, and the metal drop size is determined by the stress wave that loads, produce the relevant parameter of stress wave by control, can eject diameter less than the metal droplet of injection diameter, reach the purpose of controlling the metal drop size.
Below in conjunction with drawings and Examples, the utility model is elaborated.
Description of drawings
Fig. 1 is the structural representation of background technology metal drop injection apparatus.
Fig. 2 is the schematic diagram that the metal drop injection apparatus of Fig. 1 forms the metal drop process.
Fig. 3 is the structural representation that the utility model minute metallic molten drop forms device.
Fig. 4 is that the minute metallic molten drop of Fig. 3 forms the schematic diagram that device forms minute metallic molten drop process.
Fig. 5 is the partial enlarged drawing of Fig. 3.
In figure, 1-impulse generator, 2-magnetic valve, 3-heating element heater, the 4-metal drop, 5-nozzle, 6-molten metal, 7-crucible, 8-impact bar stroke adjustment scale, 9-adjusting knob, 10-impact bar, 11-coil, 12-device upper cover, 13-T-shape bar, the circular steel disc of 13-a-, the 13-b-cylindrical bar, 15-supply air line, 16-free surface, 17-threeway gas bleeder valve, 18-air inlet pipe, 19-heat-barrier material.
The specific embodiment
Following examples are with reference to Fig. 3-5.
The utility model minute metallic molten drop forms device and comprises heating element heater 3, crucible 7, impact bar stroke adjustment scale 8, adjusting knob 9, impact bar 10, coil 11, device upper cover 12, T-shape bar 13 and supply air line 15.T-shape bar 13 is welded by the circular steel disc 13-a on top with perpendicular to the cylindrical bar 13-b of circular steel disc, and the lower end of cylindrical bar 13-b is designed with the energy focalizer, and it is shaped as the sphere of axial indent.The external diameter of the circular steel disc 13-a diameter on T-shape bar 13 tops and crucible 7 and device upper cover 12 bottoms is identical, the height of cylindrical bar 13-b equates with the height of crucible 7 inwalls, the gap of passing through for molten metal 6 is left in cylindrical bar 13-b lower end and crucible 7 bottoms, circular steel disc 13-a is secured in a press between device upper cover 12 and crucible 7, and the place is equipped with heat-barrier material 19 in above-mentioned both compression, stops heat upwards to transmit.Impact bar stroke adjustment scale 8 is the screw rods with scale, and adjusting knob 9 is inside and outside all threaded round nuts.Device upper cover 12 crown centers are processed with the screwed hole that matches with adjusting knob 9 external screw threads, impact bar stroke adjustment scale 8 is threaded connection the composition screw pair with adjusting knob 9, the mode that adjusting knob 9 is threaded connection is fixed in device upper cover 12 tops, can realize the Stroke Control of impact bar 10 by rotary impact throw of lever regulation scale 8; Coil 11 is the comparatively smooth hollow cylinders of inner surface that become by the multiturn copper wire winding, after coiling is shaped in coil outer surface scribble the insulation heat stable resin.Coil 11 is by the hinged middle that vertically is mounted on device upper cover 12 internal circular discs, the stepped permanent magnetism iron that impact bar 10 is comprised of two sections cylinders, and the upper end of impact bar 10 is S utmost points, the lower end of impact bar 10 is N utmost points.Impact bar 10 axially is placed in coil 11, wherein, the external diameter of impact bar 10 epimeres is greater than the external diameter of coil 11, and the external diameter of impact bar 10 hypomeres equates with the internal diameter of coil 11, coil 11 is partly interference fits with impact bar 10 hypomeres, and coil 11 can play the guiding role by impact bar 10.Supply air line 15 is to be formed by the copper pipe bending, and uniform three and the outer wall that pasting respectively crucible 7 extend nozzle 5 places around crucible 7, when passing into inert gas in supply air line 15, just can form low-oxygen environment around nozzle 5; Heating element heater 3 is an annular resistance-type heating collar, is fixed in around crucible 7, not only can realize the heating to crucible 7, and can carry out preheating to gas in supply air line 15.When passing into alternating current in coil 11, just can produce alternating magnetic field in coil 11, impact bar 10 will clash into T-shape bar 13 upper ends under the effect of alternating electromagnetic force, under its end energy focalizer focussing force, drive the interior metallic solution 6 of crucible 7 spouting from nozzle 5 at the stress wave that produces on T-shape bar 13.
Embodiment 1: under different pulse frequency, metal material sprays.
When using the utility model device metal injection material, to constantly pass into protective gas in coaxial supply air line 15 in whole experimentation, form local low-oxygen environment around nozzle 5.
When using the utility model device to carry out the metal material injection, at first set heating-up temperature more than the metal material fusing point 100 ℃, utilize heating element heater 3 that metal material is heated to melt fully, pass into afterwards pulse frequency and be respectively the alternating current of 1Hz, 2Hz, 3Hz, 4Hz, 5Hz, 8Hz, 10Hz to produce the alternating magnetic field of corresponding frequencies in coil 11, the impact bar 10 that is placed in coil 11 just can impact T-shape bar 13 upper ends with corresponding frequencies, produces stress wave in cylindrical bar 13-b.Stress wave is delivered to T-shape bar 13 end energy focalizers with compressional wave form speed, under energy focalizer focussing force, the stress wave energy will concentrate on crucible 7 below nozzles 5 outlet free surface 16 places a bit, because the energy focalizer is very near apart from nozzle 5, the energy loss that stress wave carries can be ignored, the energy that stress wave carries is after overcoming the effect of fluent material capillary energy, and generation metal drop 4 is sprayed at 16 places at free surface.
When using the utility model device metal injection material, under the prerequisite that guarantees other parameter constants, by manual rotation regulation scale 8 and control the stroke of impact bar 10 in conjunction with the scale above it, because the stroke of impact bar 10 is relevant with its collision vibration-sensing rod 13 upper end initial velocity sizes, and then the size of the entrained energy of the stress wave that produces with collision is relevant, according to this relation, by regulating impact bar stroke adjustment scale 8 and can realizing the injection of different size size droplet in conjunction with the scale above it.
Embodiment 2: under different pulse widths, metal material sprays.When using the utility model device metal injection material, to constantly pass into protective gas in coaxial supply air line 15 in whole experimentation, form local low-oxygen environment around nozzle 5.
when using the utility model device metal injection material, at first set heating-up temperature more than the metal material fusing point 100 ℃, utilize heating element heater 3 that metal material is heated to melt fully, pass into pulse width afterwards in coil 11 and be respectively 2ms, 3ms, 4ms, 5ms, 6ms, 8ms, the alternating current of 10ms is to produce the respective strengths alternating magnetic field, the impact bar 10 that is placed in coil 11 clashes in respective strengths magnetic field and T-shape bar 13 upper ends, produce stress wave in cylindrical bar 13-b, stress wave is delivered to T-shape bar 13 end energy focalizers with compressional wave form speed, under energy focalizer focussing force, the stress wave energy will concentrate on crucible 7 below nozzles 5 outlet free surface 16 places a bit, because the energy focalizer is very near apart from nozzle 5, the energy loss that stress wave carries can be ignored, the energy that stress wave carries is after overcoming the effect of fluent material capillary energy, generation metal drop 4 is sprayed at 16 places at free surface.
When using the utility model device metal injection material, under the prerequisite that guarantees other parameter constants, regulate impact bar stroke adjustment scale 8 and control the stroke of impact bar 10 in conjunction with the scale above it by manual rotation, because the stroke of impact bar 10 is relevant with its collision vibration-sensing rod 13 upper end initial velocity sizes, and then the size of the entrained energy of the stress wave that produces with collision is relevant, according to this relation, by regulation scale 8 and can realize the injection of different size size droplet in conjunction with the scale above it.
A kind of method of utilizing above-mentioned minute metallic molten drop to form device formation minute metallic molten drop comprises the following steps:
(a) impact bar 10, T-shape bar 13 carry out polishing and clear up and clear up the inner foreign material of crucible 7, and high-melting-point or active metal blank are carried out removing surface, remove impurity and the oxide skin on surface.
(b) in inert environments, high-melting-point or active metal blank are put into crucible 7, pass into pulse current in coil 11, test impact bar motion credibility, constantly pass into simultaneously inert gas in supply air line 15, set heating-up temperature, by heating element heater 3 heating crucibles 7, after being molten into molten metal 6, the high-melting-point of crucible 7 inside or active metal blank just can be full of nozzle 5.
(c) pass into the pulse alternating current to produce corresponding alternating magnetic field in coil 11, impact bar 10 moves up and down in coil 11 and impacts the positive upper end of T-shape bar 13, produce stress wave in the cylindrical bar 13-b of T-shape bar 13, this stress wave is delivered to the end of cylindrical bar 13-b, under energy focalizer focussing force, the stress wave energy will concentrate on a bit spraying of nozzle 5 below free surface 16 places and produce metal drop 4.
(d) regulate impact bar stroke adjustment scale 8 and in conjunction with the scale above it, control the stroke of impact bar 10, and then control the size of being impacted the stress wave that T-shape bar 13 produces by impact bar, the final size of spraying the metal drop 4 that produces of controlling.
Claims (1)
1. a minute metallic molten drop forms device, comprise heating element heater (3), nozzle (5) and crucible (7), characterized by further comprising impact bar stroke adjustment scale (8), adjusting knob (9), impact bar (10), coil (11), device upper cover (12), T-shape bar (13) and supply air line (15); Described T-shape bar (13) is connected by the circular steel disc (13-a) on top with perpendicular to the cylindrical bar (13-b) of circular steel disc and forms, and the lower end of cylindrical bar (13-b) is designed with the energy focalizer, and the shape of energy focalizer is the sphere of axial indent; The external diameter of circular steel disc (13-a) diameter on T-shape bar (13) top and crucible (7) and device upper cover (12) bottom is identical, the height of cylindrical bar (13-b) equates with the height of crucible (7) inwall, leave the gap of passing through for molten metal (6) bottom cylindrical bar (13-b) lower end and crucible (7), circular steel disc (13-a) is secured in a press between device upper cover (12) and crucible (7), between circular steel disc (13-a) and device upper cover (12), heat-barrier material (19) is arranged; Impact bar stroke adjustment scale (8) is the screw rod with scale, and adjusting knob (9) is inside and outside all threaded round nuts; Device upper cover (12) crown center has the screwed hole that matches with adjusting knob (9) external screw thread, impact bar stroke adjustment scale (8) is threaded connection the composition screw pair with adjusting knob (9), the mode that adjusting knob (9) is threaded connection is fixed in device upper cover (12) top, can realize the Stroke Control of impact bar (10) by rotary impact throw of lever regulation scale (8); Coil (11) is the hollow cylinder that is become by the multiturn copper wire winding, coil (11) is by the hinged middle that vertically is mounted on device upper cover (12) internal circular disc, the stepped permanent magnetism iron that impact bar (10) is comprised of two sections cylinders, the upper end of impact bar (10) is the S utmost point, and the lower end of impact bar (10) is the N utmost point; Impact bar (10) axially is placed in coil (11), the external diameter of impact bar (10) epimere is greater than the external diameter of coil (11), the external diameter of impact bar (10) hypomere equates with the internal diameter of coil (11), coil (11) is partly interference fits with impact bar (10) hypomere, and coil (11) impact bar (10) play the guiding role; Supply air line (15) is to be formed by the copper pipe bending, and uniform three and the outer wall that pasting respectively crucible (7) extend nozzle (5) and locate on every side at crucible (7); Heating element heater (3) is an annular resistance-type heating collar, is fixed in crucible (7) on every side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004815 CN203003153U (en) | 2013-01-06 | 2013-01-06 | Micro metal drop forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004815 CN203003153U (en) | 2013-01-06 | 2013-01-06 | Micro metal drop forming device |
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| CN203003153U true CN203003153U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320004815 Withdrawn - After Issue CN203003153U (en) | 2013-01-06 | 2013-01-06 | Micro metal drop forming device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056375A (en) * | 2013-01-06 | 2013-04-24 | 西北工业大学 | Molten metal droplet forming device and method of utilizing same to form molten metal droplets |
| CN103785834A (en) * | 2014-02-13 | 2014-05-14 | 哈尔滨工业大学 | Jetting device and method for micro molten metal drops |
| CN112935264A (en) * | 2021-01-26 | 2021-06-11 | 大连理工大学 | Device and method for jetting and solidifying monodisperse micro-droplets based on giant magnetostriction drive |
-
2013
- 2013-01-06 CN CN 201320004815 patent/CN203003153U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056375A (en) * | 2013-01-06 | 2013-04-24 | 西北工业大学 | Molten metal droplet forming device and method of utilizing same to form molten metal droplets |
| CN103785834A (en) * | 2014-02-13 | 2014-05-14 | 哈尔滨工业大学 | Jetting device and method for micro molten metal drops |
| CN103785834B (en) * | 2014-02-13 | 2016-01-06 | 哈尔滨工业大学 | A kind of micro-molten drop injection apparatus of metal and method |
| CN112935264A (en) * | 2021-01-26 | 2021-06-11 | 大连理工大学 | Device and method for jetting and solidifying monodisperse micro-droplets based on giant magnetostriction drive |
| CN112935264B (en) * | 2021-01-26 | 2022-11-18 | 大连理工大学 | Device and method for jetting and solidifying monodisperse micro-droplets based on giant magnetostriction drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20150304 |
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| RGAV | Abandon patent right to avoid regrant |