CN102416481B - Totally closed gas atomization pulverization device - Google Patents
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- CN102416481B CN102416481B CN 201110451810 CN201110451810A CN102416481B CN 102416481 B CN102416481 B CN 102416481B CN 201110451810 CN201110451810 CN 201110451810 CN 201110451810 A CN201110451810 A CN 201110451810A CN 102416481 B CN102416481 B CN 102416481B
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Abstract
The invention discloses a totally closed gas atomization pulverization device. The device comprises a heat insulation crucible, an atomizer, an atomization tower, a telescopic plastic pipe A, a telescopic plastic pipe B and the like, wherein the atomizer is arranged in the telescopic plastic pipe A; the telescopic plastic pipe A is respectively connected with the heat insulation crucible and the upper surface of a nozzle of the atomizer in a sealed mode; the atomization tower is connected with the lower surface of the nozzle through the telescopic plastic pipe B in the sealed mode; and two half metal cylindrical barrels are arranged in inner and outer metal grooves on the lower surface of the nozzle and on the atomization tower, so that a totally closed system structure is formed. The structure can prevent oxide and nitride from being formed on the atomizer and blocking the atomizer. The totally closed gas atomization pulverization device has the advantages that: the device has a simple structure and is convenient to install, blocking is effectively prevented, the quality of powder is improved, and the like.
Description
Technical field
The present invention relates to make the ultra-fine powder technology field with atomizing molten materials with gases a kind of metal or alloy ultra-micro powder for preparing of more specifically saying so
Totally-enclosed powder by gas-atomization device
Background technology
In preparation metal and alloy powder industry, the gas atomization technology becomes one of main method of producing high-performance powder.The process of vacuum atomizing powder process is such; at first smelting metal or metal alloy under vacuum condition; change in the insulation crucible (tundish) after reaching the motlten metal insulation reasonable time of certain degree of superheat; under the condition of gas shield; metal liquid flows out through mozzle; by high-pressure inert gas stream the metal liquid atomizing is broken into a large amount of tiny drops by nozzle; these tiny drops are frozen into sphere or inferior spheric granules awing; because drop is tiny and the heat exchange condition is good; the condensation rate of drop generally can reach 100 ~ 10000K/s; than the high several magnitude of the cooling of ingot casting; therefore metal powder particles is tiny; the composition of alloy is even; organize tinyly, the alloy material made from it does not have gross segregation, excellent performance.Vacuum atomizing powder process can prepare metal and the alloy powder thereof that great majority can not adopt in air and the water atomization method is made; Secondly, because setting rate is fast, overcome segregation phenomena, can produce the spherical or inferior spherical powder of many specific alloys; At last, the technological parameter regulation and control by suitable can make powder size reach the scope of a specified requirement.Nearly all metal that is melted is available atomization production all, especially the suitable for producing alloy powder.Vacuum atomizing powder process method production efficiency height is easy to enlarge commercial scale, should and be subjected to using extremely widely in industrial quarters.
Atomizer in use often runs into the mozzle phenomenon of blocking and occurs in the prior art, and this is mainly caused by the reason of following three aspects, and the one, molten metal occurs solidifying because temperature reduces in flow process; The 2nd, backwash appears in molten drop in atomization process, namely Wu Hua drop is to the direction flight of aerodynamic atomization nozzle, the molten drop of backwash adheres to the lower end of aerodynamic atomization nozzle, and constantly solidify accumulation, finally cause the centre bore of aerodynamic atomization mozzle wherein to stop up and make the atomization process interruption; The 3rd, the oxygen in metal bath and the atomizer ambient gas and nitrogen reaction generate metal oxide and nitride, along with increasing of these metal oxides or nitride amount, mozzle can be stopped up.Situation for oxide and nitride obstruction, the general way of enterprise is to stop to produce, atomizer is pulled down mediation, but this way usually can not be dealt with problems, this mainly is because the fusing point of these oxides and nitride is generally higher, in this case, have only the mozzle of replacing and even whole atomizer.But also there are two problems in the method for changing, the one, run into the intrusion of oxygen in the air, nitrogen and other gas in the replacing process unavoidably, and their meeting oxidations, metal nitride have influenced product quality, and the 2nd, reduced efficient, increased production cost.
At present, the technology of atomizer being improved renewal has a lot, but seldom stops up especially patent and the technology of oxide and nitride blockage problem relevant for the mozzle that how to solve atomizer.Therefore, seek a kind of effective solution, the mozzle that can solve atomizer stops up especially oxide and nitride blockage problem, can also guarantee simple and practical, still difficult problem for the skilled person.
Summary of the invention
One of purpose of the present invention is to solve above-mentioned technical problem and a kind of totally-enclosed powder by gas-atomization device is provided, and the mozzle metal that it can solve atomizer effectively stops up especially oxide and nitride blocking problem.
Two of purpose of the present invention provides the above-mentioned application process of a kind of totally-enclosed powder by gas-atomization device in metal and alloy pulverizing process.
Technical scheme of the present invention
A kind of totally-enclosed powder by gas-atomization device comprises insulation crucible, atomizer, scalable plastic tube A, atomisation tower, scalable plastic tube B etc.;
Wherein said atomizer comprises mozzle, nozzle, also comprises metal-coating, heater, ceramic-seal ring etc. in addition;
Described nozzle is provided with air inlet pipe and gas outlet;
The upper end core of described metal-coating has the hole that adapts with the mozzle external diameter, in order to mozzle to be installed, the lower end of metal-coating is uncovered, and metal-coating is apered to 80 ° ~ 89 ° outer cone body at an end at 1/3 ~ 1/2 place that exports near the bottom from top to bottom;
Be provided with screw thread in the outside of the part that is apered to bullet of metal-coating and match with screw thread on the side of the interior center taper hole of nozzle, to realize support, the location and fixing to metal-coating, the metal-coating remainder does not contact with nozzle;
Make mozzle and metal-coating concentric during installation, the bottom of mozzle is concordant with the bottom of metal-coating;
Heater is installed in the gap that 10mm ~ 100mm is arranged between mozzle and the metal-coating in the gap; So that mozzle does not directly contact with metal-coating, can prevent the conduction between heater and the metal-coating on the one hand, can reduce scattering and disappearing of mozzle heat on the other hand greatly;
Described heater is provided with external power interface and is connected with extraneous power supply, in case in atomizer uses, take place under the situation of metal or low melting point obstruction, can switch on by heater, heating makes its fusing that heats up to tamper, reaches to solve the purpose that metal or alloy stops up; Described extraneous power supply is 220V or 380V power supply;
In addition, preferably being provided with metallic reflective coating or spraying the formed reflecting layer of one deck white reflectance coating on the surface of metal-coating near heater, is the energy that reflects the heater radiation, reduces the energy-conservation effect of energy loss thereby reach; The used coating of described white reflectance coating is preferably tin oxide;
Gap location in metal-coating and mozzle bottom adopts the ceramic-seal ring sealing, and described ceramic-seal ring material is selected basic zirconium phosphate pottery, aluminum phosphate or microcrystal glass processable ceramic for use;
Described mozzle, metal-coating can be selected different materials according to atomization metal or alloy powder difference;
Even that described mozzle can be selected is high temperature resistant, thermal insulation good, inertia, be easy to process or be difficult to process but can be made into the material of simple shape, as aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics, silicon carbide ceramics and other refractory ceramics;
But described metal-coating selection intensity height, be easy to process, inexpensive material, as carbon steel or stainless steel;
Described heater is according to atomization metal or alloy powder difference, and optional with electric furnace heating wire, silicon carbon rod heater, they play a role by the mode of installing or twine;
Above-mentioned scalable plastic tube A one end is tightly connected with insulation crucible one end, the nozzle upper surface of the other end and atomizer is tightly connected, atomisation tower links to each other by scalable plastic tube B with the outside, lower surface nozzle gas outlet of nozzle, scalable plastic tube A bottom is provided with the vavuum pump interface near the position of nozzle, external vavuum pump, the drain hole valve that the atomisation tower bottom is provided with is the atomisation tower valve, namely forms by the insulation crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, atomisation tower valve and the totally-enclosed system architecture of forming with the vavuum pump that scalable plastic tube A connects;
Described vavuum pump is conventional vacuum system, comprises all kinds of mechanical pumps, diffusion pump, molecular pump etc.;
In scalable plastic tube A inside, insulation crucible one end that is connected with scalable plastic tube A is connected with insulation crucible valve by pipeline on it, so that use when vacuumizing above-mentioned totally-enclosed system architecture inside;
Insulation crucible valve is bell-mouthed pipeline with the upper port of the mozzle of atomizer by metal ferrule and establish thereon bolt and be close to pad and be connected through an end again, and they all place the inside of scalability plastic tube A;
In addition, scalable plastic tube A respectively is provided with pair of glove on the position corresponding to the upper limb place of metal ferrule and metal-coating, with convenient mozzle and the metal-coating of atomizer is operated;
On the position corresponding to the ceramic-seal ring of atomizer, also be provided with pair of glove at scalable plastic tube B, be used for foretelling round metal cylindricality cylinders and ceramic-seal ring is operated to two and half;
Described three both hands cover adopts adhesive to be connected with scalable plastic tube A and scalable plastic tube B respectively for plastics thin type gloves;
In addition, scalable plastic tube A near on mozzle place and the scalable plastic tube B near the position of the ceramic-seal ring of atomizer arrange structure identical get the thing mouth, to make things convenient for exchanging for of article inside and outside the closed system;
On the described scalable plastic tube A get on thing mouth and the scalable plastic tube B to get the thing mouth structure identical, be respectively equipped with two layers of vacuum valve, be internal layer vacuum valve and outer vacuum valve, outer vacuum valve on it adopts the vacuum rubber pipe to be connected with extraneous multiple-pass joint, and the latter is connected with the continuous vavuum pump in the position of the above-mentioned close nozzle in scalable plastic tube A bottom again;
When from the totally-enclosed system, getting article, earlier article are placed on two spaces between the valve, close the internal layer valve subsequently, open outer valve, take out article; And when article are put in the totally-enclosed system, open outer valve earlier, put article between internal layer valve and the outer valve space, subsequently this space is vacuumized, reach vacuum after, stop to bleed, open the internal layer valve, article are put in the totally-enclosed system;
And when take place needing the transposing mozzle (as ftractureing for a long time in mozzle year), can be by decline nozzle, metal-coating and heater, and write down the distance that outside scale descends, in closed system, unload metal ferrule, take off mozzle, and change by getting the thing mouth; When mozzle is installed, at first load onto mozzle in closed system, rise subsequently air cavity, metal-coating and heater according to the height that outside scale rises and writes down, guarantee to be in place at every turn.
Described scalable plastic tube A and scalable plastic tube B, its material adopts high-temperature resistance plastice, coat glass fibre, the middle scalable exotic material that adopts the enhancing of stainless steel elastic helix steel wire, outside to form for Polypropylence Sheet as its inside, as the flexible vent hose of high-temperature nylon.Adopt scalable plastic tube A, conveniently under closed environment, atomizer is handled.
Above-mentioned a kind of totally-enclosed powder by gas-atomization Unit Installation process is as follows:
At first the metal-coating on the atomizer is installed on the nozzle by being threaded, the outer cone body of metal-coating is matched with the interior center taper hole of nozzle, the metal-coating remainder does not contact with nozzle;
Then in the metal-coating the inside heater is installed;
Put into mozzle in the heater inboard subsequently, the center of mozzle overlaps with the center of metal-coating, mozzle is connected by metal ferrule with the pipeline of insulation under the crucible and fix, seals at metal-coating and exit, mozzle bottom placement ceramic-seal ring afterwards;
Then above-mentioned atomizer is put into scalable plastic tube A, can be installed between insulation crucible and the nozzle by scalable plastic tube A afterwards;
At scalable plastic tube A gloves are installed subsequently, got the thing mouth, heater external power interface etc.;
Inside and outside two metallic channels and two and half then are installed between the outside, nozzle lower surface nozzle gas outlet and spray tower are foretold round metal cylindricality cylinder;
Scalable plastic tube B is installed between nozzle lower surface and spray tower at last, gloves is installed on cloth bag and is got the thing mouth, install thereby finish a kind of totally-enclosed powder by gas-atomization device.
The above-mentioned application process of a kind of totally-enclosed powder by gas-atomization device in metal and alloy pulverizing process, specific as follows:
Because the improvement of device of the present invention, in the equipment use, at first close insulation crucible valve and atomisation tower valve, with vavuum pump scalable plastic tube A and scalable plastic tube B are vacuumized processing then, after waiting to be extracted into appropriate vacuum degree, put into inert gas, when scalable plastic tube A and scalable plastic tube B internal pressure are superatmospheric, open the atomisation tower valve, open insulation crucible valve subsequently and put into metal bath, carry out the powder atomizing and handle.Just in case during mozzle take place stop up the time, or change mozzle or opening power, utilize heater to heat-treat stopping up metal, impel its fusing, solve the blockage problem of mozzle and nozzle.
Technique effect of the present invention
In a kind of totally-enclosed powder by gas-atomization device of the present invention; because atomizer is in closed system; the intrusion of oxygen and nitrogen in the atomizer unloading process can be avoided, thereby product quality that shutdown that the obstruction to nozzle and even mozzle causes brings and the loss of economic aspect can be prevented after the generation of oxide and nitride.
A kind of totally-enclosed powder by gas-atomization device of the present invention, by changing the structure of atomizer, in the gap between mozzle and the metal-coating, heater is installed, by heating, can eliminate the low melting point tamper that metal or alloy forms effectively, can also play insulation effect to molten metal, can prevent the cooled and solidified that produces in the flow process that molten metal causes because of reasons such as Changes in weather effectively, thereby the phenomenon of avoiding the mozzle mouth of pipe to stop up atomizing can't be continued takes place.
At present, the technology of atomizer being improved renewal has a lot, thereby existing powder by gas-atomization apparatus structure is numerous, different.Compare with existing atomizer, atomizer in a kind of totally-enclosed powder by gas-atomization device of the present invention is in the whole closing appliance, not only can prevent the generation of mozzle mouth of pipe oxide and nitride, even if tamper is arranged, also can eliminate the low melting point tamper that metal or alloy forms by heating.
In a kind of totally-enclosed powder by gas-atomization device provided by the invention, because the most of parts of atomizer adopt the metal material manufacturing, not only cheap, easy to process, reusable, and mozzle is concordant with the metal-coating end, can prevent that the mozzle end from contacting with the high speed cold air-flow, and the mozzle heating status is significantly improved, thermal shock resistance improves, and is difficult for bursting.Because the protection of metal-coating, the mozzle security performance improves, and the difficult phenomenon that fractures or damage occurs.
In a kind of totally-enclosed powder by gas-atomization device provided by the invention, leave the gap between the mozzle of atomizer and the metal-coating, the metal-coating internal layer is provided with the reflecting layer, metal-coating only contacts with nozzle with an awl section, area of dissipation reduces, and mozzle does not directly contact the high speed cold air-flow, and these measures are conducive to the insulation of mozzle, the temperature that can keep melt significantly reduces the melt atomizing degree of superheat and reduces the danger of stopping up; Even cause under the not high situation of mozzle temperature in that the melt overheat degree is less, also can adopt the heater energy to keep the temperature of melt, so the use of heater provide guarantee for reducing the atomizing degree of superheat.The reduction of melt overheat degree can effectively weaken the reaction between melt and the mozzle, alleviates composition and pollutes, and improves the quality of powder.
This shows that a kind of totally-enclosed powder by gas-atomization assembling structure of the present invention is simple, easily processing, easy to use, cost is low, can be repeatedly used, anti-clogging, mediation are stopped up effective, can save the work into mediation or replacing mozzle greatly, and production efficiency improves.
Description of drawings
The contour structures schematic diagram of Fig. 1, a kind of totally-enclosed powder by gas-atomization device, among the figure: 1 for the insulation crucible, 2 for get thing mouth I, 3 for scalable plastic tube A, 4 for gloves I, 5 for the heater external power interface I of atomizer, 6 for gloves II, 7 for the nozzle of atomizer, 8 for the air inlet pipe of nozzle, 9 for scalable plastic tube B, 10 for gloves III, 11 for get thing mouth II, 12 for atomisation tower, 13 for the atomisation tower valve, 14 for gloves III, 15 be that gloves V, 18 is gloves VI for the heater external power interface II of atomizer, 16 is vavuum pump interface, 17;
The structural representation of getting the thing mouth on Fig. 2, the scalable plastic tube A, 21 is that internal layer vacuum valve, 22 is that inner space, 23 is that outer vacuum valve, 24 is that outer space, 25 is the vavuum pump interface among the figure, 3 is scalable plastic tube;
Fig. 3, the part, inside of totally-enclosed powder by gas-atomization device and nozzle dissect structural representation, 1 is the insulation crucible among the figure, 3 is scalable plastic tube A, 4 is gloves I, and 5 is heater external power interface I, 6 is gloves II, 7 is nozzle, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 12 is atomisation tower, 13 is the atomisation tower valve, 14 is gloves IV, 15 is heater external power interface II, 17 is gloves V, 18 is gloves VI, 19 is pipeline, 20 is metal ferrule, 21 is pad, 22 is bolt, 23 is the gas outlet of nozzle, 24 is the space between metal-coating and the mozzle, 25 is heater, 26 is mozzle, 27 are insulation crucible valve, 28 is metal-coating, 29 is ceramic-seal ring, 30 is round metal cylindricality cylinder.
The specific embodiment
Also the present invention is described in further detail by reference to the accompanying drawings below by embodiment, but do not limit the present invention.
Embodiment 1
A kind of totally-enclosed powder by gas-atomization device, its contour structures schematic diagram as shown in Figure 1,1 is that insulation crucible, 2 is scalable plastic tube A for getting thing mouth A, 3 among the figure, 4 is that gloves I, 5 is scalable plastic tube B for the air inlet pipe of nozzle, 9 for the nozzle of atomizer, 8 for gloves II, 7 for the heater external power interface I of atomizer, 6,10 is gloves III, 11 for getting thing mouth B, 12 is atomisation tower, 13 is the atomisation tower valve, 14 is that gloves III, 15 is the heater external power interface II of atomizer, 16 is the vavuum pump interface, and 17 is gloves V, and 18 is gloves VI.
The above-mentioned thing mouth A2 that gets is provided with two layers of vacuum valve, structural representation as shown in Figure 2,21 is the internal layer vacuum valve among the figure, 22 is inner space, 23 is outer vacuum valve, 24 is the outer space, 25 is the vavuum pump interface;
When from the totally-enclosed system, getting article, earlier article are placed on space between valve 21 and 23, valve-off 21 subsequently, open valve 23, take out article;
And when article are put in the totally-enclosed system, open valve 23 earlier, put article between valve 21 and 23 space, subsequently this space is vacuumized, reach vacuum after, stop to bleed, open valve 21, article are put in the totally-enclosed system;
The above-mentioned structure of getting thing mouth B11 is with the structure of getting thing mouth A2, and its process of getting thing and putting article into is as the operation of getting thing mouth A2.
A kind of totally-enclosed powder by gas-atomization device, its inner part and nozzle dissect structural representation as shown in Figure 3,1 is the insulation crucible among the figure, 3 is scalable plastic tube A, 4 is gloves I, and 5 is heater external power interface I, 6 is gloves II, 7 is nozzle, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 12 is atomisation tower, 13 is the atomisation tower valve, 14 is gloves IV, 15 is heater external power interface II, 17 is gloves V, 18 is gloves VI, 19 is pipeline, 20 is metal ferrule, 21 is pad, 22 is bolt, 23 is the gas outlet of nozzle, 24 is the space between metal-coating and the mozzle, 25 is heater, 26 is mozzle, 27 are insulation crucible valve, 28 is metal-coating, 29 is ceramic-seal ring, 30 is round metal cylindricality cylinder.
Described vavuum pump is mechanical pump;
In the inside of scalable plastic tube A3, insulation crucible 1 one ends that are connected with scalable plastic tube A3 are connected with insulation crucible valve 27 by pipeline on it; Insulation crucible valve 27 is connected with an end of pipeline 19, and an other end of pipeline 19 is inner flat horn mouth;
In addition, scalable plastic tube A3 goes up respectively being provided with a pair of plastics thin type gloves corresponding to the position at the upper limb place of metal ferrule 20, metal-coating 28 and scalable plastic tube B9 on the position corresponding to the ceramic-seal ring 26 of atomizer and is respectively 4 among the figure, 6,10,14,17,18, they adopt adhesive to be connected on scalable plastic tube A3 or the scalable plastic tube B9 respectively, operate in order to metal-coating 28, mozzle 26, ceramic-seal ring 29, round metal cylindricality cylinder 30 to atomizer;
The nozzle 7 of atomizer is provided with the gas outlet 23 of nozzle air inlet pipe 8 and nozzle;
The upper end core of metal-coating 28 has the hole that adapts with mozzle 26 external diameters, in order to mozzle 26 to be installed, the lower end of metal-coating 28 is uncovered, and metal-coating 28 is apered to 80 ° ~ 89 ° outer cone body at an end at 1/3 ~ 1/2 place that exports near the bottom from top to bottom;
Be provided with screw thread in the outside of the part that is apered to bullet of metal-coating 28 and match with screw thread on the side of the interior center taper hole of nozzle 7, to realize support, the location and fixing to metal-coating 28, metal-coating 28 remainders do not contact with nozzle 7;
Make mozzle 26 concentric with metal-coating 28 during installation, the bottom of mozzle 26 is concordant with the bottom of metal-coating 28;
Described heater 25 is provided with external power interface 5 and 15 and passes scalable plastic tube A3 and be connected with extraneous power supply, and described extraneous power supply is 220V or 380V power supply;
In addition, be provided with metallic reflective coating or spray the formed reflecting layer of one deck white reflectance coating on the surface of metal-coating 28 near heater 25, the used coating of described white reflectance coating is tin oxide;
In gap location employing ceramic-seal ring 29 sealings of metal-coating 28 with mozzle 26 bottoms, described ceramic-seal ring 29 materials are selected basic zirconium phosphate pottery, aluminum phosphate or microcrystal glass processable ceramic for use;
Described mozzle 26 selective oxidation aluminium potteries;
Described metal-coating 28 is selected stainless steel;
Described heater 25 selects for use the mode that electric furnace heating wire twines to play a role;
Described scalable plastic tube A3 and scalable plastic tube B9 adopt the flexible vent hose of high-temperature nylon.
Adopt a kind of totally-enclosed powder by gas-atomization device provided by the invention preparation metallic aluminium powder that atomizes, the aluminium oxide phenomenon of blocking does not appear in the mozzle mouth of pipe, and can produce continuously the whole year.Compare with existing powder by atomization device, totally-enclosed powder by atomization device provided by the invention, can avoid mozzle mouth of pipe oxide and the generation of nitride and the low melting point tamper that the elimination metal or alloy forms of atomizer, realize producing continuously, reduce cost, improved product quality and production efficiency.
Foregoing only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (10)
1. a totally-enclosed powder by gas-atomization device comprises insulation crucible, atomisation tower, it is characterized in that also comprising atomizer, scalable plastic tube A, scalable plastic tube B;
Wherein said atomizer comprises mozzle, nozzle, metal-coating, heater, ceramic-seal ring;
Described nozzle is provided with air inlet pipe and gas outlet;
The upper end core of described metal-coating has the hole that adapts with the mozzle external diameter, in order to mozzle to be installed, the lower end of metal-coating is uncovered, and metal-coating is apered to 80 ° ~ 89 ° outer cone body at an end at 1/3 ~ 1/2 place that exports near the bottom from top to bottom;
Be provided with screw thread in the outside of the part that is apered to the outer cone body of metal-coating and match with screw thread on the side of the interior center taper hole of nozzle, to realize support, the location and fixing to metal-coating, the metal-coating remainder does not contact with nozzle;
Make mozzle and metal-coating concentric during installation, the bottom of mozzle is concordant with the bottom of metal-coating;
Heater is installed in the gap that 10mm ~ 100mm is arranged between mozzle and the metal-coating in the gap;
Described heater is provided with external power interface and is connected with extraneous power supply; Described extraneous power supply is 220V or 380V power supply;
Gap location in metal-coating and mozzle bottom adopts the ceramic-seal ring sealing;
Described scalable plastic tube A is tightly connected with the nozzle upper surface that is incubated crucible and atomizer respectively, atomisation tower links to each other by scalable plastic tube B with the outside, lower surface nozzle gas outlet of nozzle, scalable plastic tube A bottom is provided with the vavuum pump interface near the position of nozzle, external vavuum pump, the drain hole valve that the atomisation tower bottom is provided with is the atomisation tower valve, two half metal cylinder shape cylinder are placed in respectively in inside and outside two metallic channels on nozzle lower surface and the atomisation tower, form by the insulation crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, the totally-enclosed system architecture that atomisation tower valve and the vavuum pump that is connected with scalable plastic tube A are formed;
In scalable plastic tube A inside, insulation crucible one end that is connected with scalable plastic tube A is connected with insulation crucible valve by pipeline on it;
Insulation crucible valve is bell-mouthed pipeline with the upper port of the mozzle of atomizer by metal ferrule and establish thereon bolt and be close to pad and be connected through an end again, and they all place the inside of scalable plastic tube A;
In addition, scalable plastic tube A respectively is being provided with pair of glove corresponding to the position at the upper limb place of metal ferrule, metal-coating and scalable plastic tube B on the position corresponding to the ceramic-seal ring of atomizer; Each gloves adopts adhesive to be connected with scalable plastic tube A or scalable plastic tube B respectively;
In addition, on the scalable plastic tube A near the mozzle place of atomizer and scalable plastic tube B near the position of the ceramic-seal ring of atomizer arrange structure identical get the thing mouth;
On the described scalable plastic tube A get on thing mouth and the scalable plastic tube B to get the thing mouth structure identical, be respectively equipped with two layers of vacuum valve, be internal layer vacuum valve and outer vacuum valve, outer vacuum valve on it adopts the vacuum rubber pipe to be connected with extraneous multiple-pass joint, and the latter is connected with the continuous vavuum pump in the position of the above-mentioned close nozzle in scalable plastic tube A bottom again.
2. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 1 is characterized in that the surface of the close heater of metal-coating of described atomizer is provided with metallic reflective coating or the formed reflecting layer of spraying one deck white reflectance coating.
3. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 2, the metal-coating that it is characterized in that described atomizer is tin oxide near the used coating of white reflectance coating of the surface spraying of heater.
4. as claim 1,2 or 3 described a kind of totally-enclosed powder by gas-atomization devices, it is characterized in that the ceramic-seal ring material in the described atomizer is selected basic zirconium phosphate pottery or aluminum phosphate for use.
5. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 4 is characterized in that described scalable plastic tube A and scalable plastic tube B are inner coating glass fibre, the middle enhancing of stainless steel elastic helix steel wire, the outside scalable exotic material for Polypropylence Sheet formation of adopting.
6. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 5 is characterized in that described scalable plastic tube A and scalable plastic tube B are the flexible vent hose of high-temperature nylon.
7. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 6 is characterized in that described vavuum pump is mechanical pump, diffusion pump or molecular pump.
8. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 7 is characterized in that described mozzle is aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or silicon carbide ceramics.
9. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 8 is characterized in that described metal-coating is carbon steel or stainless steel.
10. a kind of totally-enclosed powder by gas-atomization device as claimed in claim 9 is characterized in that described heater is electric furnace heating wire or silicon carbon rod.
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| CN109249032B (en) * | 2018-11-23 | 2022-01-21 | 上海电气集团股份有限公司 | Atomized powder-making catheter |
| CN109550967A (en) * | 2018-12-20 | 2019-04-02 | 西安铂力特增材技术股份有限公司 | A kind of equipment of Novel super-thin metal powder preparation |
| CN109806988B (en) * | 2019-04-13 | 2023-10-03 | 江苏华威机械制造有限公司 | Molten metal jet deposition atomizer capable of preventing nodulation and nozzle blockage |
| CN113060558B (en) * | 2021-03-30 | 2021-11-02 | 中国医学科学院阜外医院 | Glove powdering device |
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| US5280884A (en) * | 1992-06-15 | 1994-01-25 | General Electric Company | Heat reflectivity control for atomization process |
| CN101966589A (en) * | 2010-11-13 | 2011-02-09 | 河南理工大学 | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder |
| CN201744413U (en) * | 2010-07-06 | 2011-02-16 | 河南省远洋铝业有限公司 | Anti-blocking atomizer nozzle for preparing superfine powder metal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003113406A (en) * | 2001-10-05 | 2003-04-18 | Daido Steel Co Ltd | Gas atomization nozzle |
| JP5140342B2 (en) * | 2007-08-01 | 2013-02-06 | Ｄｏｗａエレクトロニクス株式会社 | Atomizing nozzle and metal powder production apparatus using atomizing nozzle |
-
2011
- 2011-12-30 CN CN 201110451810 patent/CN102416481B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5280884A (en) * | 1992-06-15 | 1994-01-25 | General Electric Company | Heat reflectivity control for atomization process |
| CN201744413U (en) * | 2010-07-06 | 2011-02-16 | 河南省远洋铝业有限公司 | Anti-blocking atomizer nozzle for preparing superfine powder metal |
| CN101966589A (en) * | 2010-11-13 | 2011-02-09 | 河南理工大学 | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2003-113406A 2003.04.18 |
| JP特开2009-35770A 2009.02.19 |
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| CN102416481A (en) | 2012-04-18 |
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