CN208879705U - A kind of metal powder atomizer being used to prepare increasing material manufacturing - Google Patents
A kind of metal powder atomizer being used to prepare increasing material manufacturing Download PDFInfo
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- CN208879705U CN208879705U CN201821455473.0U CN201821455473U CN208879705U CN 208879705 U CN208879705 U CN 208879705U CN 201821455473 U CN201821455473 U CN 201821455473U CN 208879705 U CN208879705 U CN 208879705U
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Abstract
The utility model discloses a kind of metal powder atomizer for being used to prepare increasing material manufacturing, comprising: first passage is equipped in the middle part of diversion pipe, the periphery of diversion pipe lower end forms the first guide surface；The first cavity is equipped with inside upper part, upper part peripheral wall is equipped with first through hole, the middle part of upper part upper end is equipped with the first through slot, the middle part of upper part lower end is equipped with the second through slot, second through slot inner circumferential forms the second guide surface, diversion pipe protrudes into upper part, forms annular gap between the first guide surface and the second guide surface；The second cavity is equipped in the middle part of lower member, third cavity is equipped with inside lower member, lower member peripheral wall is equipped with the second through-hole, and the inner circumferential of the second cavity lower end forms third guide surface, several second channels are equipped in lower member, several second channel one end connect to form looping pit with third guide surface.The utility model can prevent water conservancy diversion blockage, improve the fine powder recovery rate during vacuum aerosolization.
Description
Technical field
The utility model relates to the technical field of metal increasing material manufacturing more particularly to a kind of it is used to prepare increasing material manufacturing
Metal powder atomizer.
Background technique
On in terms of aerospace, defence and military and traditional manufacture, metal increases material manufacturing technology
Importance is increasingly prominent, and the metal powder raw material used are one of the key factors for restricting technology development.Increasing material manufacturing
Required metal powder should have the features such as sphericity is high, and powder diameter is small, good fluidity and chemical component with high purity.With
Upper requirement proposes high challenge to the production equipment of increasing material manufacturing special-purpose metal powder.
Currently, the main technological route of preparation increasing material manufacturing metal powder is vacuum aerosolization.Vacuum aerosolization is to adopt
Metal bath liquid stream is broken for tiny drop with high-speed gas, drop becomes spherical or close ball by the effect of surface tension
Shape forms metal powder after solidification.During aerosolization, aerosolization nozzle plays key effect, not only influences powder
Particle diameter distribution and fine powder recovery rate also have an important influence on atomization gas consumption and cost.
Traditional atomizer generally uses single layer close coupling design (as shown in Figure 1), the gas vent point of such nozzle
For annular distance and circumferential weld, although atomization gas, hole more demanding to processing technology, all can be saved using annular distance design
Axis must converge in the same point of catheter axis.
As the subsequent research to aerosolization mechanism and experimental data accumulate, scholars have found that single layer atomizer does not have
The standby simple raising that melt nebulization efficiency is realized by improving atomization air pressure, i.e., to single layer atomizer, there are a best atomizations
Air pressure.This phenomenon is that spray nozzle front end airflow field state is determined, then single layer atomizer is thin golden in fine powder recovery rate and more
Belong to and exposes obvious deficiency in powder preparation.In order to further increase the energy conversion efficiency of atomizing medium, bilayer or multilayer mist
The exploration for changing nozzle gradually attracts people's attention.
Currently on the market, the double-deck aerosolization nozzle of a part is designed using annular ring type inner nozzle plus circular seam type outer nozzle,
Although the nozzle can use the advantage of annular distance Yu two kinds of gas vents of circumferential weld, the structure of its interior annular distance outer ring seam be will increase
The complexity of part actual processing, and abandon inner Laval tubular type circumferential weld structure；
Another part bilayer aerosolization nozzle uses annular distance circumferential weld integral design, and wherein the Laval pipe design of nozzle is put
Set in annular air channel, and be not at circumferential weld and annular distance, obvious shortcoming of this design be part processing realize it is difficult and
The double-deck atomizing effect energy attenuation, although nozzle is compact, closed internal processing Laval pipe structure is due to the pneumatic source of single-stage
When being separated into two-stage gas atomizing molten materials after accelerating by Laval pipe, the gas dispersion of pneumatic efficiency decaying or broken melt,
It is extremely low to will cause aerosolization nozzle atomization efficiency, is easy to cause melt to block on pipeline, and powder fine powder recovery rate is low.
Summary of the invention
It is low for existing atomizer nebulization efficiency or on pipeline block the existing above problem, a kind of purport is now provided
Ensuring that nebulization efficiency is higher and the metal powder atomizer for being used to prepare increasing material manufacturing of pipeline blockage will not be made.
Specific technical solution is as follows:
A kind of metal powder atomizer being used to prepare increasing material manufacturing, comprising: diversion pipe, the axial direction of the diversion pipe
Middle part is equipped with first passage, and the periphery of the lower end of the diversion pipe forms the first guide surface；Upper part, the upper part
Inside is equipped with the first cavity, and the peripheral wall of the upper part is equipped with the first through hole being connected to first cavity, it is described on
The upper end of end pieces is equipped with the first through slot, and the lower end of the upper part is equipped with the second through slot, the inner circumferential shape of second through slot
At the second guide surface, the lower end of the diversion pipe sequentially passes through first through slot and first cavity and protrudes into described second
In through slot, annular gap is formed between first guide surface and second guide surface；Lower member, the lower member
Middle part is equipped with the second cavity, and second cavity is connected to second through slot, and the lower member is internally located at described the
The periphery of two cavitys is equipped with third cavity, and it is logical that the peripheral wall of the lower member is equipped with second be connected to the third cavity
Hole, the inner circumferential of the lower end of second cavity form third guide surface, several connections described second are equipped in the lower member
The second channel of cavity and the third cavity.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the lower end of the diversion pipe is located at
In the upper part.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the structure of the annular gap is
Laval pipe structure.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein outside the upper end of the diversion pipe
Extend outward to form bulge loop week, the upper end limit of the bulge loop and the upper part cooperates.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the lower end surface of the upper part
Be downwardly extending convex block, the upper surface of the lower member offers the annular groove to match with the convex block, the annular groove with
The second cavity connection.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the upper part and it is described under
It is assembled between end pieces using interference fit mode.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the one of several second channels
End is connect with the third guide surface respectively, and several second channels are relative to the third guide surface circular array.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the first passage is in inverted cone shape
Setting.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein first guide surface is in back taper
Shape setting.
The above-mentioned metal powder atomizer for being used to prepare increasing material manufacturing, wherein the annular gap forms injection
Angle, the angle of the jet angle are 55 °~75 °.
The good effect that above-mentioned technical proposal has compared with prior art is:
The lower end of diversion pipe is set in upper part in the utility model, i.e., diversion pipe is using internal withdraw type structure and right
The inverted cone shape setting of first passage, reduces metal liquid stream thermal loss, can guarantee the liquid stream degree of superheat, prevent gold in diversion pipe
Belong to liquid stream solidification to gag somebody, guarantees continuous production；The inverted cone shape of first guide surface of diversion pipe lower end is arranged, by with upper part
The cooperation of second guide surface of interior inverted cone shape forms the jet angle of annular gap, and ingehious design, which goes out, is not necessarily to additional processing
Laval pipe structure, and utilize atomization mechanism, the design of annular gap in upper part, several second channels in lower member
The second channel design of the annular of formation, the double-deck aerosolization design, gas atomization kinetic energy is bigger, doubles to improve fogging degree, drop
Failure rate during low vacuum gas-atomized powder guarantees powder continuous production, while improving gas atomization power, thus
Improve the fine powder recovery rate during vacuum aerosolization.The utility model improves vacuum aerosolization and prepares metal alloy powders mistake
The relatively low problem of diversion pipe blockage problem and fine powder recovery rate in journey, in the quality and powder output for guaranteeing to improve metal powder
While, reduce the manufacture difficulty and its processing cost of atomizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional single layer atomizer；
Fig. 2 is that a kind of overall structure of metal powder atomizer for being used to prepare increasing material manufacturing of the utility model is illustrated
Figure；
Fig. 3 is to be atomized reason in a kind of three stages of metal powder atomizer for being used to prepare increasing material manufacturing of the utility model
By schematic diagram；
Fig. 4 is the front end gas field distribution map of traditional single layer atomizer；
Fig. 5 is the front end gas field distributed data figure of traditional single layer atomizer；
Fig. 6 is that a kind of front end gas field of metal powder atomizer for being used to prepare increasing material manufacturing of the utility model is distributed
Figure；
Fig. 7 is that a kind of front end gas field of metal powder atomizer for being used to prepare increasing material manufacturing of the utility model is distributed
Datagram.
In attached drawing: 1, diversion pipe；2, first passage；3, the first guide surface；4, upper part；5, the first cavity；6, first
Through-hole；7, the first through slot；8, the second through slot；9, the second guide surface；10, annular gap；11, lower member；12, the second cavity；
13, the second through-hole；14, third cavity；15, second channel；16, third guide surface；18, bulge loop；19, convex block；20, annular groove, 21,
Air stream outlet；22, molten metal；23, liquid film.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
Fig. 1 is the structural schematic diagram of traditional single layer atomizer, and Fig. 2 is that the utility model one kind is used to prepare increasing material,
The overall structure diagram of the metal powder atomizer of manufacture, Fig. 3 are that the utility model one kind is used to prepare increasing material manufacturing
Three stages of metal powder atomizer are atomized theoretical schematic diagram, and Fig. 4 is the front end gas field of traditional single layer atomizer
Distribution map, Fig. 5 are the front end gas field distributed data figure of traditional single layer atomizer, and Fig. 6 is the utility model one kind for making
The front end gas field distribution map of the metal powder atomizer of standby increasing material manufacturing, Fig. 7 are that the utility model one kind is used to prepare increasing
The front end gas field distributed data figure of the metal powder atomizer of material manufacture, with traditional single layer shown in Fig. 1, Fig. 4 and Fig. 5
Atomizer is compared, and as shown in Fig. 2, Fig. 3, Fig. 6 and Fig. 7, is shown a kind of being used to prepare for preferred embodiment and is increased material system
The metal powder atomizer made, comprising: the axial middle part of diversion pipe 1, diversion pipe 1 is equipped with first passage 2, first passage 2
It is arranged in inverted cone shape, the periphery of the lower end of diversion pipe 1 forms the first guide surface 3, and the first guide surface 3 is arranged in inverted cone shape.
Further, as a kind of preferred embodiment, the metal powder atomizer for being used to prepare increasing material manufacturing is also wrapped
Include: upper part 4, the inside of upper part 4 are equipped with the first cavity 5, and the peripheral wall of upper part 4 is equipped with to be connected with the first cavity 5
Logical first through hole 6, the upper end of upper part 4 are equipped with the first through slot 7, and the lower end of upper part 4 is equipped with the second through slot 8, and second
The inner circumferential of through slot 8 forms the second guide surface 9, and the second guide surface 9 is arranged in inverted cone shape, and the lower end of diversion pipe 1 sequentially passes through first
Through slot 7 and the first cavity 5 simultaneously protrude into the second through slot 8, and annular gap 10 is formed between the first guide surface 3 and the second guide surface 9.
Further, as a kind of preferred embodiment, the metal powder atomizer for being used to prepare increasing material manufacturing is also wrapped
Include: the middle part of lower member 11, lower member 11 is equipped with the second cavity 12, and the second cavity 12 is connected to the second through slot 8, lower end
The periphery for being internally located at the second cavity 12 of part 11 is equipped with third cavity 14, and the peripheral wall of lower member 11 is equipped with and third cavity
Second through-hole 13 of 14 connections, the inner circumferential of the lower end of the second cavity 12 form third guide surface 16, and third guide surface 16 is in circular cone
Shape setting, the interior second channels 15 equipped with several the second cavitys of connection 12 and third cavity 14 of lower member 11.
Further, as a kind of preferred embodiment, the lower end of diversion pipe 1 is located in upper part 4, i.e., diversion pipe 1 is adopted
With internal withdraw type structure.Traditional diversion pipe 1 and nozzle cooperation are that diversion pipe 1 can stretch out nozzle a distance, and the utility model
The lower end of diversion pipe 1 is set in the inside of upper part 4, does not have to stretch out upper part 4, the visual effect of this structure is same
Under the atomizer of thickness, 1 length of diversion pipe shortens, and carries out shortization design to diversion pipe.
Further, as a kind of preferred embodiment, the structure of annular gap 10 is Laval pipe structure.
Further, as a kind of preferred embodiment, the periphery of the upper end of diversion pipe 1 extends outward to form bulge loop 18, convex
The upper end of ring 18 and upper part 4, which limits, to be cooperated.
Further, as a kind of preferred embodiment, the lower end surface of upper part 4 is downwardly extending convex block 19, lower end
The upper surface of component 11 offers the annular groove 20 to match with convex block 19, and annular groove 20 is connected to the second cavity 12.
Further, as a kind of preferred embodiment, interference fit mode is used between upper part 4 and lower member 11
Assembly reduces welding and the use of bolt fastener, easy to disassemble and replacement.
Further, as a kind of preferred embodiment, one end of several second channels 15 connects with third guide surface 16 respectively
It connects, several second channels 15 are relative to 16 circular array of third guide surface.
The above is only the utility model preferred embodiments, are not intended to limit the embodiments of the present invention and protection
Range.
The utility model also has on the basis of the above is implemented as follows mode:
In the further embodiment of the utility model, continuing with referring to fig. 2, shown in Fig. 3, Fig. 6 and Fig. 7, described first is logical
Road is arranged in inverted cone shape.Preferably, the taper between first passage 2 and horizontal plane is 82 °~88 °, and the effective metal that reduces melts
Heat loss in body flow process.
In the further embodiment of the utility model, first guide surface is arranged in inverted cone shape.Preferably, the first guiding
Taper between face 3 and horizontal plane is 55 °.
In the further embodiment of the utility model, annular gap 10 forms jet angle, and the angle of jet angle is 55 °~
75°。
In the further embodiment of the utility model, between the axis of several second channels 15 and the axis of diversion pipe 1
Angle is 40 °~55 °.
Preferably, the internal diameter of annular gap 10 is 24-30mm.
Preferably, the material of atomizer is made of stainless steel.
Preferably, 16 place arc diameter of third guide surface is 36-50mm, the diameter 1.2-2mm of second channel 15.
The two-layer compound nozzle of the utility model can obtain larger gas velocity away from nozzle more near position, and double-deck multiple
Higher gas kinetic energy atomizing molten materials, i.e. two-layer compound atomizer nebulization efficiency can be kept more in a wider context by closing nozzle
It is high.
For the diversion pipe 1 of the utility model for deliverying metal melt to nozzle, upper part 4 will using annular gap structure
Metal bath atomization, lower member 4 can improve fine powder recovery rate further by the molten drop refinement of upper part atomization.
Diversion pipe 1 is arranged using internal withdraw type structure and to the inverted cone shape of first passage 2 in diversion pipe 1 in the utility model,
Metal liquid stream thermal loss is reduced, can guarantee the liquid stream degree of superheat, prevents the solidification of metal liquid stream from gaging somebody, guarantees continuous production；
The inverted cone shape of first guide surface 3 of 1 lower end of diversion pipe is arranged, by matching with the second guide surface 9 of inverted cone shape in upper part 4
It closes, forms the jet angle of annular gap 10, ingehious design goes out to be not necessarily to the Laval pipe structure of additional processing, and utilizes atomization
Mechanism, the design of annular gap 10 in upper part 4, annular second channel 15 designs in lower member 11, the double-deck aerosolization
Design, gas atomization kinetic energy is bigger, doubles to improve fogging degree, reduces the failure rate during vacuum gas-atomized powder, protects
Powder continuous production is demonstrate,proved, while improving gas atomization power, to improve the fine powder recovery rate during vacuum aerosolization.
The utility model improves vacuum aerosolization and prepares diversion pipe blockage problem and fine powder during metal alloy powders
The relatively low problem of recovery rate reduces the manufacture of atomizer while guaranteeing to improve the quality and powder output of metal powder
Difficulty and its processing cost.
Atomizer is annular second of the annular gap 10 plus lower member 11 of upper part 4 in the utility model
Channel 15 is arranged, and meets " atomization of three stages is theoretical " mentioned in document " metal atomization powder-making technique status ".The atomization of three stages
Theory is that relatively approved atomization mechanism, this theory think that the atomization process of metal belt is " to form a film first, then at this stage
It is broken into band, last band-like refinement is broken into drop " (as shown in Figure 3).Because melt atomization needs to first pass around text message, the
If level-one is impacted using low-angle circumferential weld, directly melt puncture as big drop, is unfavorable for further melt and refines, reason is
Under same volume conditions, " liquid film " melt ratio " spherical " melt is separated to the little energy of the droplet consumption of same size.It is based on
This structure ultimately forms the Laval pipe structure that can speed up gas by changing the structure of first passage 2 in diversion pipe.In reality
Border production process, melt is after annular gap gas " pull " is at elongated liquid film, then uses the second channel of low-angle annular
15 pairs of its further atomizations, the second channel 15 of low-angle annular design, and pass through the axis and diversion pipe 1 of several second channels 15
Axis between angle be 40 °~55 °, surface energy of liquid is converted by gas kinetic energy, to reach higher gas mist
Change effect, if portion gas kinetic energy, which can play, accelerates drop to fly downwards using 15 structure of second channel of wide-angle annular
Effect, thus cause gas kinetic energy waste.
The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and
Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art
Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in
In enclosing.
Claims (10)
1. a kind of metal powder atomizer for being used to prepare increasing material manufacturing characterized by comprising
Diversion pipe, the axial middle part of the diversion pipe are equipped with first passage, and the periphery of the lower end of the diversion pipe forms first and leads
To face；
Upper part, the inside of the upper part are equipped with the first cavity, and the peripheral wall of the upper part is equipped with and described the
The first through hole of one cavity connection, the upper end of the upper part are equipped with the first through slot, and the lower end of the upper part is equipped with the
The inner circumferential of two through slots, second through slot forms the second guide surface, and the lower end of the diversion pipe sequentially passes through first through slot
With first cavity and protrude into second through slot, annular is formed between first guide surface and second guide surface
Gap；
The middle part of lower member, the lower member is equipped with the second cavity, and second cavity is connected to second through slot, institute
The periphery for being internally located at second cavity for stating lower member is equipped with third cavity, the peripheral wall of the lower member be equipped with
Second through-hole of the third cavity connection, the inner circumferential of the lower end of second cavity form third guide surface, the lower end
Second channel equipped with several connection second cavitys and the third cavity in part.
2. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that described to lead
The lower end of flow tube is located in the upper part.
3. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that the ring
The structure in shape gap is Laval pipe structure.
4. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that described to lead
The periphery of the upper end of flow tube extends outward to form bulge loop, and the upper end limit of the bulge loop and the upper part cooperates.
5. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that on described
The lower end surface of end pieces is downwardly extending convex block, and the upper surface of the lower member offers the ring to match with the convex block
Slot, the annular groove are connected to second cavity.
6. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1 or described in 5, which is characterized in that institute
It states and is assembled between upper part and the lower member using interference fit mode.
7. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that Ruo Gansuo
The one end for stating second channel is connect with the third guide surface respectively, and several second channels are relative to the third guide surface
Circular array.
8. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that described
One channel is arranged in inverted cone shape.
9. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that described
One guide surface is arranged in inverted cone shape.
10. being used to prepare the metal powder atomizer of increasing material manufacturing according to claim 1, which is characterized in that described
Annular gap forms jet angle, and the angle of the jet angle is 55 °~75 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821455473.0U CN208879705U (en) | 2018-09-06 | 2018-09-06 | A kind of metal powder atomizer being used to prepare increasing material manufacturing |
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| CN201821455473.0U CN208879705U (en) | 2018-09-06 | 2018-09-06 | A kind of metal powder atomizer being used to prepare increasing material manufacturing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899713A (en) * | 2019-12-20 | 2020-03-24 | 北京机科国创轻量化科学研究院有限公司 | Novel close coupling gas atomizing nozzle |
| CN114406270A (en) * | 2021-12-03 | 2022-04-29 | 上海电气集团股份有限公司 | Atomizing nozzle |
| CN115007868A (en) * | 2022-07-15 | 2022-09-06 | 广东银纳增材制造技术有限公司 | Argon filling method and device in 3d printing powder milling process |
-
2018
- 2018-09-06 CN CN201821455473.0U patent/CN208879705U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899713A (en) * | 2019-12-20 | 2020-03-24 | 北京机科国创轻量化科学研究院有限公司 | Novel close coupling gas atomizing nozzle |
| CN114406270A (en) * | 2021-12-03 | 2022-04-29 | 上海电气集团股份有限公司 | Atomizing nozzle |
| CN115007868A (en) * | 2022-07-15 | 2022-09-06 | 广东银纳增材制造技术有限公司 | Argon filling method and device in 3d printing powder milling process |
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