CN2510207Y - Spherical metallic powder supersonic-atomising preparation apparatus - Google Patents
Spherical metallic powder supersonic-atomising preparation apparatus Download PDFInfo
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- CN2510207Y CN2510207Y CN 01275703 CN01275703U CN2510207Y CN 2510207 Y CN2510207 Y CN 2510207Y CN 01275703 CN01275703 CN 01275703 CN 01275703 U CN01275703 U CN 01275703U CN 2510207 Y CN2510207 Y CN 2510207Y
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Abstract
Disclosed is a hypersonic atomizing-preparation device of spherical metal dust, comprising a melting chamber. A melting stove of which the slanting-lower portion is fixed with a pouring basket is arranged in the melting chamber, and a liquid-guiding tube is disposed at the bottom of the pouring basket. An atomizing jet-body is connected to the bottom portion of the melting chamber, the atomizing jet-body and the melting chamber are respectively in connection with vacuum tubes which are connected with vacuum pumps, and a powder-collector is arranged at the bottom of the atomizing jet-body. The utility model is characterized in that a hypersonic amplitude transformer is arranged at the bottom of the liquid-guiding tube fixed in the atomizing jet-body, the length of the hypersonic amplitude transformer is odd number of times of lambada/2 or lambada/4, and the lambada stands for the wavelengths of vibrator materials. The hypersonic amplitude transformer is composed of an amplitude-transforming head, an amplitude transformer, a piezoelectric ceramic pin, an upper pressuring cover, a lower pressuring cover and locking bolts. The top end of the amplitude-transforming head is provided with a radiating surface forming into an alpha angle of 90-180 degrees. The utility model has the advantages of simple facility, easy realization of mechanism and automation, low costs, narrow powder-size distribution, besides the particles are in the shape of a sphere, and the surfaces of the particles are glabrous.
Description
Technical field
The utility model relates to the preparing technical field of metal powder material, belongs to a kind of ultrasonic atomizatio preparation facilities of globular metallic powder.
Background technology
Along with the development of modern science and technology and new material, more and more harsher to the requirement of the aspects such as kind, quality and cost of dusty material, the preparation of metal dust towards high-purity, fine, composition and controllable granularity and cheaply direction develop.The main method such as the technology such as mechanical crushing, water atomization, aerosolization and centrifugal atomizing of preparation metal dust have been carried out large-scale industrial production, and be successfully applied to industrial circles such as powder metallurgy, but the aspects such as homogeneity of the geometrical property of powder such as particle size, size distribution, powder morphology and different batches product are also not too crucial to the component processing process during this period, do not highlight its importance.Closely during the last ten years, along with the development of technology such as metal injection moulding, thermal spraying, metal are shaped fast, surface mount, it is the same important that the geometrical property of metal dust begins the performance that becomes with material itself for the accuracy that guarantees high quality of products and uniformity.For example, the homogeneity of powder not only influences the output of metal injection moulding parts, also helps to guarantee the reliability and the uniformity of injection moulding process.Powder size and distributing with appreciable impact viscosity, thus use, the degreasing characteristic of bonding agent, shrinkage degree, sintering characteristic, final densities and the surface quality of blank influenced; For guaranteeing the coating quality of plasma spraying and HVOF, the size distribution of powder is narrow, so that the particle of fusion is in essentially identical state when arriving matrix, otherwise too big particle solidifies already, and too little particle is evaporation already then.In addition, spherical powder has good flowability, helps the enforcement of hot-spraying technique; It is different and powder is had different granularity requirements that RP technique is looked product requirement, for example to use the powder of uniform particle size to precision and the demanding occasion of surface quality, for obtaining the powder that the high density workpiece can adopt bimodal distribution, powder has accurately, the flow behavior of good reproducibility is very important.
The metal dust pattern of mechanical crushing and water atomization preparation is irregular, oxidation and seriously polluted; The aerosolization especially powder morphology of inert gas atomizer preparation improves greatly, for spherical or subsphaeroidal, but unavoidably has the satellite particle, and size distribution is wide, and equipment is huge, also will consume a large amount of inert gases, causes production cost higher; The metal powder granulates pattern of centrifugal atomizing technology preparation is better, and for spherical or subsphaeroidal, surperficial adhesion is few, narrow particle size distribution, but, generally want 20,000-100 because centrifugal rotational speed is very high, 000 rev/min, this makes equipment very complicated, and brings the problem on technology and the safety.In addition, though reduce much than aerosolization equipment on the atomizing tank body height, increase several times on the diameter.
One of index of metal dust most critical is exactly an oxygen impurities content, and the increase of oxygen impurities content just means the reduction of its grade.Therefore, guarantee when powder preparation that not only oxygen content is low, but also require powder to have enough strong antioxygenic property, to guarantee the stability of product quality in screening, accumulating and the use.The surface state of powder has fundamental influence to oxygen content.The spheric granules specific area minimum of any surface finish, amount of oxidation is just little, and if rough surface, the pattern irregularity resembles the aerosolization powder surface and is stained with a lot of superfine powders and camphor ball, has then increased the chance of oxidation stain greatly.
The ultrasonic ink discharge device of ultrasonic spraying burner, mimeograph of commercially available medical ultrasonic atomizer, family expenses humidifier and patent documentation record is (referring to patent CN87100781, CN85107669, JP6221462, US4352429, US6127429) specificity is strong, only be applicable to atomized water, diesel oil, printing ink, colloidal sol etc. respectively, and the spraying system flow is little, especially can't be applicable to the production of metal dust.
Summary of the invention
The purpose of this utility model provides a kind of ultrasonic atomizatio preparation facilities that is used to produce globular metallic powder, and it is simple in structure, continuity is strong, production cost is low, product quality is easy to control, but is suitable for suitability for industrialized production and extensive use.
For achieving the above object, the utility model is taked following design:
The basic principle of metal dust ultrasonic atomizatio technology is: liquid metal overlays on the surface with the supersonic frequency vibration, form a thin liquid layer, under the ultrasonic vibration effect, evoke capillary wave, when the amplitude of vibration plane reaches one regularly, drop promptly flies out and mist formation from crest, forms metal dust after the cooled and solidified.
A kind of ultrasonic atomizatio preparation facilities of globular metallic powder, one working chamber is arranged, in the working chamber, be provided with a smelting furnace, in the smelting furnace bottom is tundish, there is the water conservancy diversion mouth this tundish bottom, be connected with an atomizing tank body in the bottom, working chamber, this atomizing tank body is connected with vacuum pipe respectively with the working chamber, this vacuum pipe connects vavuum pump, bottom at the atomizing tank body is provided with powder catcher, it is characterized in that: the water conservancy diversion mouth bottom in the atomizing tank body is provided with a supersonic concentrator, and the length of this supersonic concentrator is the odd-multiple of λ/2 or λ/4, and λ is the wavelength of vibrator material.
Described supersonic concentrator is by the cumulative head, the luffing bar, piezoelectric ceramic piece, lower cover on the metal, cooling dome is formed up and down, this cumulative head is installed in the upper end of luffing bar, be connected with the metal upper press cover in the lower end of luffing bar, the metal upper press cover is arranged with piezoelectric ceramic piece, be provided with the metal lower cover in the lower end of piezoelectric ceramic piece, passing piezoelectric ceramic piece by the bolt of metal lower cover bottom is connected with the metal upper press cover, circumference at the metal upper press cover is protruding with flange, be connected with cooling dome on flange top, be connected with cooling dome down in the flange bottom, last cooling dome sidewall is extended with water cooling tube, following cooling dome sidewall is extended with forced air cooled tube, leads to electrode on the outer circumferential edge of piezoelectric ceramic piece.
The top of cumulative head is provided with the radiating surface that is the α angle, and this α angular range is 90 °～180 °.
Supersonic concentrator is the core component of atomizing, is similar to the nozzle of aerosolization technology.Whole amplitude transformer length is the odd-multiple of λ/2 oscillators or λ/4, and λ is a wavelength, must carry out the calculating and the processing of composite oscillator in strict accordance with the odd-multiple of λ/2 oscillators or λ/4.Supersonic concentrator constitutes sandwich piezoelectricity amplitude transformer by piezoelectric ceramic piece, electrode, luffing bar, metal backup shoe, clamp nut.The effect of power ultrasonic generator is for supersonic concentrator provides the driving to the piezoelectric vibrator resonant frequency of high power, frequency tuning, relies on to make the amplitude on the amplitude transformer radiating surface reach tens microns, thereby metal liquid is atomized on radiating surface.
The acoustic characteristic and the temperature of piezoelectric ceramic piece are closely related, and serviceability temperature must be lower than curie point, the limit of its safe temperature be 0 ℃ with half of curie point.Because metal bath has higher temperature, add that the supersonic concentrator piezoelectric ceramic piece of working for a long time itself also will generate heat, and therefore, must effectively cool off supersonic concentrator.When melting point metal was low, supersonic concentrator can adopt air-cooled, but when melting point metal was higher, supersonic concentrator should adopt two medium types of cooling, the last cooling dome employing water-cooled in the luffing bar outside, and following cooling dome adopts and air-cooledly just can meet the demands.
The utlity model has following advantage:
1, equipment and technology are simple, and flow process is short;
2, be easy to realize mechanization and automation mechanized operation, be suitable for industrialization and produce continuously;
3, directly utilize ultrasonic vibration atomization metal liquid stream, production cost is low;
4, powder size narrowly distributing, particle is spherical in shape, any surface finish, oxygen content is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure, 1 is the working chamber, and 2 is smelting furnace, 3 is tundish, and 4 is the water conservancy diversion mouth, and 5 are the atomizing tank body, 6 is supersonic concentrator, 7 is the cooling dome of supersonic concentrator, and 8 is the power ultrasonic generator, and 9 is the locating rack of supersonic concentrator, 10 charge into pipeline for inert gas, 11 is powder catcher, and 12 is vavuum pump, and 13 is vacuum pipe.
The structure for amplifying schematic diagram of Fig. 2 supersonic concentrator
Among the figure, 14 is the cumulative head, and 15 is radiating surface, and 16 is sealing ring, and 17 is last cooling dome, 18 is water cooling tube, and 19 is the luffing bar, and 20 is the metal upper press cover, and 21 is flange, and 22 is piezoelectric ceramic piece, 23 is forced air cooled tube, and 24 is electrode, and 25 is bolt, and 26 are following cooling dome, and 27 is the metal lower cover.
The specific embodiment
Referring to Fig. 1, shown in Figure 2: the ultrasonic atomizatio preparation facilities of this globular metallic powder, one working chamber 1 is arranged, in working chamber 1, be provided with a melting resistance furnace 2, smelting furnace on the lower side portion be tundish 3, there is water conservancy diversion mouth 4 this tundish bottom, be connected with an atomizing tank body 5 in the bottom, working chamber, this atomizing tank body 5 is connected with vacuum pipe 12 respectively with working chamber 1, this vacuum pipe 12 connects vavuum pump 13, bottom at atomizing tank body 5 is provided with powder catcher 11, water conservancy diversion mouth 4 bottoms in atomizing tank body 5 are provided with a supersonic concentrator 6, the length of this supersonic concentrator 6 is λ/4 (or odd-multiple of λ/2 or λ/4), supersonic concentrator is by cumulative head 14, luffing bar 19, piezoelectric ceramic piece 22, lower cover 20 on the metal, 27 and clamping screw 25 form, λ is the wavelength of vibrator material.
This cumulative head 14 is installed in the upper end of luffing bar 19, be connected with metal upper press cover 20 in the lower end of luffing bar 19, metal upper press cover 20 is arranged with piezoelectric ceramic piece 22, be provided with metal lower cover 27 in the lower end of piezoelectric ceramic piece 22, passing piezoelectric ceramic piece 22 by the bolt 25 of metal lower cover bottom is connected with metal upper press cover 20, circumference at metal upper press cover 20 is protruding with flange 21, be connected with cooling dome 17 on flange 21 tops, be connected with cooling dome 26 down in flange 21 bottoms, last cooling dome 17 sidewalls are extended with water cooling tube 18, following cooling dome 26 sidewalls are extended with forced air cooled tube 23, lead to electrode 24 on the outer circumferential edge of piezoelectric ceramic piece 22.
The top of cumulative head is provided with the radiating surface that is the α angle, and this α angle is 120 ° (scope can be 90 °～180 °).
During the preparation powder, the fusing of at first will preparing burden in inert atmosphere (nitrogen, argon gas) is cast into alloy pig.With after the vacuumizing of system, be in 10-10
-2Under the vacuum state of Pa, return a kind of of filling with inert gas nitrogen, argon gas, in resistance-heated furnace or induction heater, alloy pig is melted then to 0.8-1.0atm.Melt pours into tundish, flow is by the water conservancy diversion mouth control of tundish bottom, the outspoken footpath of water conservancy diversion is 5-2mm, flow can be controlled in 10-40kg/h, and melt drops on the supersonic concentrator radiating surface and sprawls film forming, starts the ultrasonic vibration amplitude transformer its mist is loose into molten drop, molten drop solidifies when flying in the atomizing tank body and is cooled to powder, powder is further cooling in gatherer, again through screening plant classifications such as vibratory sieves, detects the encapsulation of qualified back and stores.
Claims (3)
1, a kind of ultrasonic atomizatio preparation facilities of globular metallic powder, one working chamber is arranged, in the working chamber, be provided with a smelting furnace, smelting furnace on the lower side portion be tundish, there is the water conservancy diversion mouth this tundish bottom, be connected with an atomizing tank body in the bottom, working chamber, this atomizing tank body is connected with vacuum pipe respectively with the working chamber, this vacuum pipe connects vavuum pump, bottom at the atomizing tank body is provided with powder catcher, it is characterized in that: the water conservancy diversion mouth bottom in the atomizing tank body is provided with a supersonic concentrator, and the length of this supersonic concentrator is the odd-multiple of λ/2 or λ/4, and λ is the wavelength of vibrator material.
2, the ultrasonic atomizatio preparation facilities of globular metallic powder according to claim 1, it is characterized in that: described supersonic concentrator is by the cumulative head, the luffing bar, piezoelectric ceramic piece, lower cover and clamping screw are formed on the metal, this cumulative head is installed in the upper end of luffing bar, be connected with the metal upper press cover in the lower end of luffing bar, the metal upper press cover is arranged with piezoelectric ceramic piece, be provided with the metal lower cover in the lower end of piezoelectric ceramic piece, passing piezoelectric ceramic piece by the bolt of metal lower cover bottom is connected with the metal upper press cover, circumference at the metal upper press cover is protruding with flange, be connected with cooling dome on flange top, be connected with cooling dome down in the flange bottom, last cooling dome sidewall is extended with water cooling tube, following cooling dome sidewall is extended with forced air cooled tube, leads to electrode on the outer circumferential edge of piezoelectric ceramic piece.
3, the ultrasonic atomizatio preparation facilities of globular metallic powder according to claim 2, it is characterized in that: the top of cumulative head is provided with the radiating surface that is the α angle, and this α angular range is 90 °～180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275703 CN2510207Y (en) | 2001-12-04 | 2001-12-04 | Spherical metallic powder supersonic-atomising preparation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275703 CN2510207Y (en) | 2001-12-04 | 2001-12-04 | Spherical metallic powder supersonic-atomising preparation apparatus |
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| CN2510207Y true CN2510207Y (en) | 2002-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01275703 Expired - Lifetime CN2510207Y (en) | 2001-12-04 | 2001-12-04 | Spherical metallic powder supersonic-atomising preparation apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319898A (en) * | 2011-10-13 | 2012-01-18 | 西北工业大学 | Spray forming system for preparing alloy and metal-based composite parts |
| CN102689015A (en) * | 2012-06-21 | 2012-09-26 | 北京有色金属研究总院 | Metal powder preparation device and method therefor |
| CN105562699A (en) * | 2016-03-02 | 2016-05-11 | 沈倩友 | High-precision micro-fine metal sphere forming machine |
| CN107225251A (en) * | 2017-07-25 | 2017-10-03 | 天津中能锂业有限公司 | A kind of passivation of lithium microsphere production device |
| CN107755707A (en) * | 2017-10-11 | 2018-03-06 | 镇江乐科信息科技有限公司 | The production method and production equipment of a kind of metal dust |
| CN108994287A (en) * | 2018-09-29 | 2018-12-14 | 宁波众远新材料科技有限公司 | Vacuum gas-atomized powder equipment self-balancing tonifying Qi pipeline and supplementing method for air |
| CN109622980A (en) * | 2019-01-28 | 2019-04-16 | 哈尔滨工业大学 | A kind of contactless powder by atomization device and method of molten metal ultrasonic standing wave |
| CN110303162A (en) * | 2019-08-14 | 2019-10-08 | 北京七弟科技有限公司 | A kind of ultrasonic wave prepares metal ball shaped powder device |
| CN111331145A (en) * | 2020-04-28 | 2020-06-26 | 西普曼增材科技(北京)有限公司 | Device and method for preparing metal powder by ultrasonic |
-
2001
- 2001-12-04 CN CN 01275703 patent/CN2510207Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319898A (en) * | 2011-10-13 | 2012-01-18 | 西北工业大学 | Spray forming system for preparing alloy and metal-based composite parts |
| CN102319898B (en) * | 2011-10-13 | 2013-05-08 | 西北工业大学 | Spray forming system for preparing alloy and metal-based composite parts |
| CN102689015A (en) * | 2012-06-21 | 2012-09-26 | 北京有色金属研究总院 | Metal powder preparation device and method therefor |
| CN102689015B (en) * | 2012-06-21 | 2014-03-26 | 北京有色金属研究总院 | Metal powder preparation device and method therefor |
| CN105562699A (en) * | 2016-03-02 | 2016-05-11 | 沈倩友 | High-precision micro-fine metal sphere forming machine |
| CN107225251A (en) * | 2017-07-25 | 2017-10-03 | 天津中能锂业有限公司 | A kind of passivation of lithium microsphere production device |
| CN107755707A (en) * | 2017-10-11 | 2018-03-06 | 镇江乐科信息科技有限公司 | The production method and production equipment of a kind of metal dust |
| CN108994287A (en) * | 2018-09-29 | 2018-12-14 | 宁波众远新材料科技有限公司 | Vacuum gas-atomized powder equipment self-balancing tonifying Qi pipeline and supplementing method for air |
| CN109622980A (en) * | 2019-01-28 | 2019-04-16 | 哈尔滨工业大学 | A kind of contactless powder by atomization device and method of molten metal ultrasonic standing wave |
| CN110303162A (en) * | 2019-08-14 | 2019-10-08 | 北京七弟科技有限公司 | A kind of ultrasonic wave prepares metal ball shaped powder device |
| CN111331145A (en) * | 2020-04-28 | 2020-06-26 | 西普曼增材科技(北京)有限公司 | Device and method for preparing metal powder by ultrasonic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Compo Solder Co., Ltd. Assignor: General Research Institute for Nonferrous Metals Contract fulfillment period: 2008.11.4 to 2022.11.3 Contract record no.: 2008990001437 Denomination of utility model: Ultrasonic atomization preparation device and method for spherical metal powder Granted publication date: 20020911 License type: Exclusive license Record date: 20081212 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.4 TO 2022.11.3; CHANGE OF CONTRACT Name of requester: BEIJING KANGPU XIWEI SOLDER CO., LTD. Effective date: 20081212 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111204 Granted publication date: 20020911 |