CN206912256U - A kind of high-purity micro-sized spherical titanium powder preparation facilities - Google Patents
A kind of high-purity micro-sized spherical titanium powder preparation facilities Download PDFInfo
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- CN206912256U CN206912256U CN201720572217.9U CN201720572217U CN206912256U CN 206912256 U CN206912256 U CN 206912256U CN 201720572217 U CN201720572217 U CN 201720572217U CN 206912256 U CN206912256 U CN 206912256U
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Abstract
The utility model discloses a kind of high-purity micro-sized spherical titanium powder preparation facilities, and powder raw material processed is used as by the use of titanium silk or stud；It is combined with supersonic speed argon plasma torch and high energy electron rifle and titanium silk or stud is melted and be atomized；Realized by the input power, insertion depth and the vertical angle that adjust plasmatorch and high energy electron rifle to titanium valve yield, the regulation of particle diameter；Caused atomization titanium valve natural cooling in the powder stove Cheng Fenqu processed equipped with water-cooling wall, and be collected by the powder collection device into powder area bottom；With the titanium valve carried secretly in cyclone collection argon gas；The repeatable utilization of argon gas after filtration, purification.
Description
Technical field
The utility model belongs to advanced metal Material Field, and in particular to a kind of high-purity superfine spherical titanium powder, preparation method thereof
And its device.
Background technology
With extensive use of the 3D printing technique in fields such as Aero-Space, military project, automobile, medical treatment, to 3D printing material,
Especially high-purity superfine spherical metal powder and the demand of alloy is in rapid growth.And purity, stream to respective metal material
The requirement of dynamic property, sphericity, uniform particle diameter etc. is also increasingly strict.
Titanium possesses the advantages that density is low, intensity is high, good corrosion resistance, and its high-purity minute spherical powder is 3D printing
In one of the most frequently used raw material.Because titanium has the features such as hardness is high, and fusing point is high, reactivity is strong, conventional method is used
The titanium valve of manufacture has the characteristics that sphericity is poor, size distribution is uneven, oxygen content is high, can not be applied in 3D printing field.
At present, the titanium valve preparation method that 3D printing field uses mainly has the hot dehydriding of titantium hydride, radio frequency plasma mist
Change method, plasma torch atomization etc..The hot dehydriding of titantium hydride is crisp using titantium hydride, and is easily decomposed under the high temperature conditions
The characteristic of hydrogen and Titanium, after titantium hydride is crushed by mechanical means, the method for Heating Dehydrogenation production titanium valve.This method is produced
Amount is big, but alleged production titanium valve sphericity, granularity uniformity etc. are poor.Radio frequency plasma atomization（US9516734,
US9163299）Using Canadian Tekna companies as representative, the technology uses titanium metal powder as raw material, with radio frequency plasma torch
Material powder is heated, the preferable titanium valve of sphericity is generated after cooling.This method can solve the problems, such as titanium valve sphericity, but
Powder purity, granularity are limited to raw material in itself, and production cost is higher.Plasma torch atomization (US5707419, WO
2011054113A1) using Canadian Pyrogenesis and AP＆C companies as representative.The technology uses titanium silk as raw material, with straight
The high temperature plasma jet for flowing plasmatorch is thermal source, and high temperature, the high speed characteristics of plasmatorch jet are utilized under ar gas environment,
Raw material titanium silk is melted by plasmatorch and is atomized as tiny drop, subsequent natural cooling is sized spherical titanium powder with more.This method
The titanium valve good sphericity of production, particle diameter is smaller and distribution uniform, if using high-purity titanium silk as raw material, can produce purity
High titanium valve.The shortcomings that this method, is that titanium silk melting rate is limited by plasmatorch and titanium silk heat transfer efficiency, causes
Titanium valve yield is relatively low.Pyrogenesis has issued the plasma atomization legal system powder patent after improving in 2016（WO
2016191854A1）, raw material titanium silk is preheated with induction heating using before plasma is atomized, so as to reduce
Unit mass titanium silk makes titanium valve output increased to 2-3 times in the caloric receptivity in plasma melting stage, but by material of titanium silk itself
The limitation of characteristic, by improving preheating temperature titanium valve yield can not be made further to improve.
Utility model content
The purpose of this utility model is to solve the deficiency of above-mentioned 3D printing titanium valve preparation method, there is provided one kind can be high
Effect production high-purity, high sphericity, even particle size distribution and controllable titanium valve preparation method and device.
Technical scheme：
A kind of high-purity micro-sized spherical titanium powder preparation facilities, including powder stove processed, the upper area of powder stove processed is bullet
Powder area in preparation processed, lower area are the big powder collecting region of back taper body, and the middle part of powder stove processed is that it is shaped as tubbiness into powder area
Structure, Cheng Fenqu bottom connect small powder collecting region by gas pipeline：
The top of the powder area in preparation processed is dynamic sealing device, and the top of dynamic sealing device is continuous feed straightening system,
The bottom of dynamic sealing device is guider, and the guider is located inside powder area in preparation processed, supersonic speed argon plasma torch
The conical surface of powder area in preparation processed is arranged on high energy electron rifle and is stretched into through the conical surface in powder area in preparation processed；
The bottom of the big powder collecting region is big powder collecting device, and the small powder collecting region includes cyclonic separation
Device, described cyclone separator one end connect bucket gas pipeline, and bottom connects small powder collecting device, top connection filter, institute
State filter top connection vacuum plant.
Further, resistance to temperature dummy plate is provided between the powder area in preparation processed and Cheng Fenqu, the middle part of resistance to temperature dummy plate is opened
There is through hole, its center is atomization point.
Further, regulation power, position and angle are equipped with the supersonic speed argon plasma torch and high energy electron rifle
The device of degree, can adjust plasmatorch and electron gun inserts the depth of powder stove processed, and its angle with vertical direction.According to original
The input power of the diameter of material and required powder rate adaptation high energy electron rifle processed, and adjusted by high energy electron rifle adjusting means
The vertical angles of high energy electron rifle and the deeply length of powder stove processed, make all high energy electron rifles with identical power and theta alignment
Atomization point；According to the input power of the diameter of raw material and required powder rate adaptation torch processed, and pass through plasmatorch regulating system
The vertical angles of regulation plasmatorch and the deeply length of powder stove processed, make the flame of all plasmatorch with identical power and angle
Degree alignment atomization point.
Further, the supersonic speed argon plasma torch and high energy electron rifle are respectively 2-4 handles, using titanium silk in
The heart, supersonic speed argon plasma torch and high energy electron rifle arrange into uniform intervals.
Further, the Cheng Fenqu, big powder collecting device and small powder collecting device are respectively arranged with water-cooling wall, to atomization
Titanium valve is cooled down in time.
Further, the device can be additionally used in the preparation of other refractory metal powder, such as Ti6Al4V titanium alloy materials
The refractory metals such as material, rhenium, molybdenum, tungsten, niobium, tantalum.
The utility model also provides a kind of method for preparing high-purity micro-sized spherical titanium powder, including the following steps：
1）Vacuumize process is carried out to whole device, then carried out repeatedly with high purity argon of the concentration not less than 99.9%
Cleaning, powder furnace pressure is 1.0-1.1 atmospheric pressure during operation；
2）Using titanium silk or stud as powder raw material processed, the continuous feed of titanium silk, aligning are realized by continuous feed straightening system
Task；
3）Titanium silk enters powder area in preparation processed by dynamic sealing device, then passes through guider, into atomization point, opens simultaneously
Supersonic speed argon plasma torch is opened to preheat atomization point；
4）High energy electron rifle is opened, powder by atomization operation is carried out, after titanium silk front end reaches atomization point, in high-temperature plasma fire
Rapid heated thawing under the synergy of flame and high energy electron rifle, and smashed by ultrasonic plasma jet, form small liquid
Drop, drop temperature exceed 150-400 °C of titanium fusing point.
5）By step 4）Produce droplet and enter powder stove Cheng Fenqu processed with argon plasma stream, molten drop is in Cheng Fenqu
Gradual cooled and solidified, the very high titanium metal powder of sphericity is formed in the presence of surface tension；
Titanium metal powder carries out the collection of greater particle size powder by the big powder collecting region into powder area bottom, compared with small particle
Titanium valve gas solid separation after cyclone separator is brought into by argon gas, the powder compared with small particle is collected in small powder collecting region, not had
The powder that is separated enter together in company with argon gas the argon gas that filter passes through after powder filter can be discharged into air or
Recycling.
Further, the titanium silk or a diameter of 1.0-10.0mm of stud.
Further, high energy electron rifle power is arrived 20kW by the list for 1, single supersonic speed argon plasma torch power model
Enclose and arrive 150kW for 30.
Beneficial effect：
Traditional plasma torch atomization technique is combined by the utility model with high-energy electron beam heating technology, is solved
Three key technical problems of 3D printing titanium valve manufacture：First, using the high-energy-density of high-power electron beam, to the mist of titanium material
Change point to be heated, solve in plasmatorch atomization the problem of raw material heat absorption rate is limited, and causes titanium valve to yield poorly；In addition,
Caused drop, titanium valve carry a certain amount of residual charge after atomization, in the presence of Coulomb force, are sent out between can avoiding droplets from
It is raw to hit, the yield of lopsided powder is reduced, ensures the sphericity and size distribution of production titanium valve；Finally, the grain of the titanium valve produced
Degree size can be adjusted by plasmatorch and the power of high energy electron rifle, position, angle etc..
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device.
Embodiment
In order to more fully understand the utility model, phase of the present utility model is furtherd elucidate with reference to embodiment and accompanying drawing
Hold inside the Pass, but content of the present utility model is not limited solely to the following examples.
As shown in figure 1, a kind of high-purity micro-sized spherical titanium powder preparation facilities, including powder stove 11 processed, the top of powder stove 11 processed
Region is the powder area in preparation 12 processed of bullet, and lower area is the big powder collecting region of back taper body, the middle part of powder stove processed be into
Powder area 14, it is shaped as barrel-like structure, and Cheng Fenqu 14 bottom connects small powder collecting region by gas pipeline 17：
The top of powder area in preparation 12 processed is dynamic sealing device 5, and the top of dynamic sealing device 5 is continuous feed straightening system 3,
The bottom of dynamic sealing device 5 is guider 4, and guider 4 is located inside powder area in preparation 12 processed, supersonic speed argon plasma torch
6 and high energy electron rifle 8 be arranged on powder area in preparation processed the conical surface and stretched into through the conical surface in powder area in preparation 12 processed；
The bottom of big powder collecting region is big powder collecting device 16, and big powder collecting device front end is the first valve 15,
Small powder collecting region includes cyclone separator 18, and the one end of cyclone separator 18 connects bucket gas pipeline 17, and bottom connects small powder and received
Collect equipment 20, the small front end of powder collecting device 20 is the second valve 19, the top of cyclone separator 18 connection filter 21, is filtered
The top of device 21 connects vacuum plant 22.Resistance to temperature dummy plate 10, resistance to temperature dummy plate 10 are provided between the powder area in preparation processed and Cheng Fenqu
Middle part be provided with through hole, its center for atomization point 13.
Supersonic speed argon plasma torch 6 is provided with the device 7 of regulation power, position and angle, and 8 are provided with high energy electron rifle
The device 9 of power, position and angle is adjusted, by power, position（The depth of control insertion area in preparation）And angle（Vertical side
To angle）Regulation realize to titanium valve yield, the regulation of particle diameter；
Supersonic speed argon plasma torch 6 and high energy electron rifle 8 are respectively 3, and argon gas supersonic speed plasmatorch 6 is as main warm
Source, and supersonic atomization argon gas stream is provided；High energy electron rifle 8 directly heats to atomization point, significantly increases the melting speed of titanium
Degree, improve titanium valve yield；Centered on titanium silk, supersonic speed argon plasma torch 6 and high energy electron rifle 8 are arranged into uniform intervals
Row.Cheng Fenqu, big powder collecting device and small powder collecting device are respectively arranged with water-cooling wall, and atomization titanium valve is cooled down in time.
Cheng Fenqu, big powder collecting device and small powder collecting device can also set observation window, and equipped with temperature, pressure sensor.
The present embodiment also provides the method that titanium valve preparation is carried out using the device：
12 intert arrangement three 65kW supersonic speed argon plasma torches and three 5kW plasmas in powder stove area in preparation processed
Rifle.Diameter 4mm is chosen, the titanium silk 2 of purity 99.99% is raw material, comes from titanium wire coil 1, and system is aligned by continuous feed
The aligning of system 3, and be sent into by dynamic sealing device 5 in powder stove area in preparation processed, it is then passed through guider 4.
Opening continuous feed straightening system 3 makes it slowly be fed, and tests normal rear closing feed system.Open vacuum plant
22, when gauge pressure reaches -20 in powder stove processed, during 000 Pa, start the argon gas for being passed through purity toward powder stove processed and being not less than 99.9%, argon gas
It can enter from plasmatorch, can also be supplied from argon gas pipeline, because pipeline location does not influence on system, therefore not attached
Marked in figure, last up to argon concentration in powder stove processed and reach 99.6%, close vacuum plant 22, close argon gas import.Open super
Velocity of sound argon plasma torch 6, atomization point is preheated, preheating time is 10-30 minutes, and preheating opens continuous feed after terminating
Straightening system 3, titanium silk is initially entered atomization point, while open high energy electron rifle 8, proceed by powder by atomization operation.Atomization
In pulverizing process, supersonic speed argon plasma torch argon flow amount is 4slpm.Titanium silk is in supersonic speed argon plasma torch 6 and high energy
Rapid heated thawing under the synergy of electron gun 8, and smashed by ultrasonic plasma jet, form small drop.Drop
Temperature exceedes 150-400 °C of titanium fusing point.Titanium drop enters powder stove Cheng Fenqu 14 processed with argon plasma stream, into powder
Gradual cooled and solidified in area, the very high titanium powder of sphericity is formed in the presence of surface tension.The titanium valve of greater particle size exists
Big powder collecting region under Action of Gravity Field in powder furnace bottom processed is collected, and the titanium valve compared with small particle is carried secretly into whirlwind point by argon gas
From gas solid separation after device 18, collected by small powder collecting device 20.Nano particle of the diameter less than 1 μm is collected by filter.
Understanding after tested, the titanium valve yield of the device can reach 5kg/h, wherein big powder collecting device collects the kg/h of titanium valve about 1.5,
75 μm of average grain diameter, small powder collecting device collect the kg/h of titanium valve about 3.5,30 μm of average grain diameter, and pattern is spherical.
Do not done in the utility model illustrate be prior art or by prior art i.e. can be achieved, Er Qieben
It is only preferably case study on implementation of the present utility model that case is embodied described in utility model, is not used for limiting this practicality
New practical range.The equivalent changes and modifications that i.e. all contents according to present utility model application the scope of the claims are made, should all make
For technology category of the present utility model.
Claims (6)
1. a kind of high-purity micro-sized spherical titanium powder preparation facilities, it is characterised in that including powder stove processed（11）, powder stove processed（11）It is upper
Portion region is the powder area in preparation processed of bullet（12）, lower area be back taper body big powder collecting region, the middle part of powder stove processed
For into powder area（14）, it is shaped as barrel-like structure, Cheng Fenqu（14）Bottom pass through gas pipeline（17）Small powder is connected to collect
Area：
The powder area in preparation processed（12）Top be dynamic sealing device（5）, dynamic sealing device（5）Top be continuous feed aligning
System（3）, dynamic sealing device（5）Bottom be guider（4）, the guider（4）Positioned at powder area in preparation processed（12）It is interior
Portion, supersonic speed argon plasma torch（6）And high energy electron rifle（8）Installed in powder area in preparation processed（12）The conical surface and stretched through the conical surface
Enter powder area in preparation processed（12）It is interior；
The bottom of the big powder collecting region is big powder collecting device（16）, the small powder collecting region includes cyclone separator
（18）, the cyclone separator（18）One end connects bucket gas pipeline（17）, bottom connects small powder collecting device（20）, top connects
Logical filter（21）, the filter（21）Top connects vacuum plant（22）.
2. high-purity micro-sized spherical titanium powder preparation facilities according to claim 1, it is characterised in that the powder area in preparation processed
（12）With into powder area（14）Between be provided with resistance to temperature dummy plate（10）, resistance to temperature dummy plate（10）Middle part be provided with through hole, its center is
Atomization point（13）.
3. high-purity micro-sized spherical titanium powder preparation facilities according to claim 1, it is characterised in that the supersonic speed argon gas
The device of regulation power, position and angle is equipped with plasmatorch and high energy electron rifle（7、9）.
4. high-purity micro-sized spherical titanium powder preparation facilities according to claim 1, it is characterised in that the supersonic speed argon gas
Plasmatorch（6）And high energy electron rifle（8）It is respectively 2-4 handles, centered on titanium silk, supersonic speed argon plasma torch（6）With
High energy electron rifle（8）Arranged into uniform intervals.
5. high-purity micro-sized spherical titanium powder preparation facilities according to claim 1, it is characterised in that the Cheng Fenqu, big
Powder collecting device and small powder collecting device are respectively arranged with water-cooling wall.
6. high-purity micro-sized spherical titanium powder preparation facilities according to claim 1, it is characterised in that the device can be additionally used in
The preparation of other refractory metal powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720572217.9U CN206912256U (en) | 2017-05-22 | 2017-05-22 | A kind of high-purity micro-sized spherical titanium powder preparation facilities |
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| CN201720572217.9U CN206912256U (en) | 2017-05-22 | 2017-05-22 | A kind of high-purity micro-sized spherical titanium powder preparation facilities |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199345A (en) * | 2017-05-22 | 2017-09-26 | 加拿大艾浦莱斯有限公司 | A kind of high-purity superfine spherical titanium powder, preparation method thereof and its device |
| CN111390192A (en) * | 2020-04-26 | 2020-07-10 | 中国科学院宁波材料技术与工程研究所 | Equipment and method for preparing spherical metal micro powder |
-
2017
- 2017-05-22 CN CN201720572217.9U patent/CN206912256U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199345A (en) * | 2017-05-22 | 2017-09-26 | 加拿大艾浦莱斯有限公司 | A kind of high-purity superfine spherical titanium powder, preparation method thereof and its device |
| CN107199345B (en) * | 2017-05-22 | 2019-09-13 | 加拿大艾浦莱斯有限公司 | A kind of high-purity superfine spherical titanium powder, preparation method thereof and its device |
| CN111390192A (en) * | 2020-04-26 | 2020-07-10 | 中国科学院宁波材料技术与工程研究所 | Equipment and method for preparing spherical metal micro powder |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180123 Effective date of abandoning: 20190913 |
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| AV01 | Patent right actively abandoned |