CN107414091B - A kind of preparation system and method for the enhanced titanium alloy powder of nano ceramics - Google Patents
A kind of preparation system and method for the enhanced titanium alloy powder of nano ceramics Download PDFInfo
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- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
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- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B22F9/00—Making metallic powder or suspensions thereof
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- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
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- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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Abstract
The present invention provides the preparation system and method for a kind of enhanced titanium alloy powder of nano ceramics, method includes: the spray-hole for carrying the high pressure argon gas of nano ceramic powder and being pooled to annular appendix by argon gas nebulization channel, and it sprays downwards and forms the air curtain for carrying nano ceramic powder, and continuously it is pooled to the position of the vertex of a cone, it is collided with the liquid of titanium alloy rod bar drippage, breaks up titanium alloy drop in the position of the vertex of a cone and form titanium alloy spherical fine powder；Meanwhile evenly dispersed nano ceramic powder is driven into titanium alloy spherical fine powder in high pressure gas, and evenly spread to break up after in the titanium alloy spherical fine powder that is formed, ultimately form the titanium alloy spherical fine powder for being evenly distributed with nano ceramic powder.Advantage are as follows: the enhanced titanium alloy powder that nano-ceramic particle is deep into inside Titanium Powder body can be prepared in the present invention, also, fine powder recovery rate is higher, to meet the needs of specific area.
Description
Technical field
The invention belongs to high activity metal powder preparation technical fields, and in particular to a kind of nano ceramics enhancing Type Titanium Alloy
The preparation system and method for powder.
Background technique
For titanium elements in global distribution than wide, content is more than the 0.4% of earth crustal mass, global proved reserves about 34
Hundred million tons, content occupies the 10th in all elements, the sequence of preceding 10 bit element are as follows: oxygen, silicon, aluminium, iron, calcium, sodium, potassium, magnesium, hydrogen,
Titanium.Titanium is smaller than steel density by 40%, and the intensity of titanium and the intensity of steel are suitable, and structure efficiency can be improved in this.Meanwhile titanium is heat-resisting
Property, corrosion resistance, elasticity, elastoresistance and shaping processability are good.Titanium alloy is just applied to aircraft industry from occurring.Space shuttle
It is aircraft that is main, having a wide range of application.Titanium is the primary structural material and aerial engine fan, compressor of aircraft
The preferred material of the important components such as wheel disc and blade is known as " space metal ".Aircraft is more advanced, and titanium dosage is more, such as the U.S.
F22 forth generation machine Ti content is 41% (mass fraction), and it is to use Ti content at present that F119 engine Ti content, which is 39%,
High aircraft.Titanium alloy research origin also promotes the development of titanium alloy in aviation, the development of aircraft industry.Titanium Alloys for Aviation
Research be always an important, active branch in titanium alloy field.In aerospace field, there are many titanium alloy components
All there is labyrinth characteristic, the methods of powder metallurgy and 3D printing is mostly used to manufacture.Therefore, titanium alloy needs previously prepared
At powder morphology, could be used in above-mentioned field.Titanium alloy has very high activity under high-temperature atmosphere, and in the molten state
It reacts with multiple element, causes the preparation of titanium alloy powder different from the preparation method of conventional metal powder.
Currently, prepare titanium alloy powder equipped with rotary electrode method and gas atomization.Rotary electrode method is suitble to produce
Granularity is the powder between 75~150 μm, due to unstability of the titanium alloy electrode bar under high speed rotation state, current nothing
Method produces powder of the granularity less than 50 μm by improving revolving speed；And the powder size of gas atomization preparation can be 0~150
It is adjusted between μm, it is the current unique production method of titanium alloy fine powder that especially powder of the production granularity less than 50 μm, which has advantage,.It should
Method is made special equipment and is produced in Europe (such as Germany) and North America (such as Canada) country.
Titanium alloy powder field, currently used major way are prepared in aerosolization are as follows: are arranged in the bottom of titanium alloy bar
Heating coil is melted, the bottom end of titanium alloy bar is directly heated by melting heating coil, until titanium alloy bar is fused into liquid drop
It falls.The titanium alloy drop of drippage is atomized again, forms powder.Currently, such equipment can only manufacture the Titanium Powder of single component
End, and fine powder recovery rate is relatively low.
Summary of the invention
In view of the defects existing in the prior art, the present invention provides a kind of preparation system of enhanced titanium alloy powder of nano ceramics
System and method, can effectively solve the above problems.
The technical solution adopted by the invention is as follows:
The present invention provides a kind of preparation system of enhanced titanium alloy powder of nano ceramics, comprising: argon gas atomization plant is received
Rice ceramic powders conveying device, argon gas nebulization channel and radio-frequency induction coil；
The argon gas atomization plant includes annular appendix (1), and the surface of the annular appendix (1) is evenly distributed several
A spray-hole (2), the outgassing direction of each spray-hole (2) are direction obliquely, also, each spray-hole (2)
Outgassing direction converges to the position of a vertex of a cone (3)；The annular appendix (1) also has air inlet, the air inlet and institute
Argon gas nebulization channel is stated to be connected；The argon gas nebulization channel is connected with the nano ceramic powder conveying device；The high frequency sense
Answer coil to be located at the underface of the annular appendix (1), also, the extended line at the center of the radio-frequency induction coil with it is described
The vertex of a cone (3) intersection.
The present invention provides a kind of nano ceramics of preparation system based on the above-mentioned enhanced titanium alloy powder of nano ceramics
The preparation method of enhanced titanium alloy powder, comprising the following steps:
Step 1, the prefabricated nano ceramic powder got ready is fitted into nano ceramic powder conveying device；By titanium alloy rod bar
It is fixedly installed in the center of radio-frequency induction coil, the axially-extending line of titanium alloy rod bar is made to pass through the position of the vertex of a cone (3)；
Step 2, then, argon gas atomization plant carries out forvacuum processing, in this forvacuum processing, nano-ceramic powder
Last conveying device also reaches 0.1Pa or less by forvacuum；
Step 3, start radio-frequency induction coil, meanwhile, make argon gas nebulization channel to annular appendix (1) conveying high-pressure argon
Gas；
On the one hand, titanium alloy rod bar is run down, also, the end of the titanium alloy rod bar run down passes through high-frequency induction
The induced current of coil is fused into continuous drop and drips downwards；On the other hand, since high pressure argon gas and nano ceramic powder convey
Nano ceramic powder in device communicates, and therefore, the high pressure argon gas for carrying nano ceramic powder converges by argon gas nebulization channel
Collect the spray-hole (2) of annular appendix (1), and spray downwards and form the air curtain for carrying nano ceramic powder, and is continuous
It is pooled to the position of the vertex of a cone (3), is collided with the liquid of titanium alloy rod bar drippage, makes titanium alloy drop in the position of the vertex of a cone (3)
It sets and is broken up and form titanium alloy spherical fine powder；Meanwhile evenly dispersed nano ceramic powder is driven into titanium conjunction in high pressure gas
In golden spherical fine powder, and evenly spread to break up after in the titanium alloy spherical fine powder that is formed, ultimately form and be evenly distributed with nanometer
The titanium alloy spherical fine powder of ceramic powders.
Preferably, the nano ceramic powder is the nano ceramic powder of single component, or is at least two nanometers of potteries
The mixing nano ceramic powder that porcelain powder is formed.
Preferably, the nano ceramic powder is TiC or TiN.
Preferably, in step 3, by adjusting the pressure of argon gas nebulization channel and receiving in nano ceramic powder conveying device
Rice ceramic powders weight, control carries the ejection flow of the high pressure argon gas of nano ceramic powder, and then adjusts and be finally prepared into
To the titanium alloy spherical fine powder that nano ceramic powder is distributed in nano ceramic powder volume fraction, obtain have different increasings
The alloy powder of potent fruit and different performance.
Preferably, in step 3, it is 15-40mm/min that titanium alloy rod bar, which runs down speed,；The power of radio-frequency induction coil
For 40-80KW；The feed flow of nano ceramic powder is 50-300g/min；The pressure of high pressure argon gas is 2-6Mpa；What is used receives
The granularity of rice ceramic powder stock is 50-200nm.
The preparation system and method for the enhanced titanium alloy powder of a kind of nano ceramics provided by the invention have the advantage that
The enhanced titanium alloy powder that nano-ceramic particle is deep into inside Titanium Powder body can be prepared in the present invention, and
And fine powder recovery rate is higher, to meet the needs of specific area.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the preparation method of the enhanced titanium alloy powder of nano ceramics provided by the invention；
Fig. 2 is a kind of structural schematic diagram of the preparation system of the enhanced titanium alloy powder of nano ceramics provided by the invention；
Fig. 3 is that nano-ceramic particle provided by the invention enhances powder formation basic theory figure；
Wherein: 1- annular appendix；2- spray-hole；The 3- vertex of a cone；4- titanium alloy rod bar；5- contains the argon gas gas of nano particle
Stream；6- titanium alloy melts drop；7- breaks up the final titanium alloy spherical fine powder that nano ceramic powder is distributed with of droplet formation.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
Metal 3D printing technique has more far-reaching development potentiality, is not only able to zero, metal of forming labyrinth
Part, and for application material has more flexibility and high-performance, thus it is possible to vary traditional raw material at being grouped as to obtain
The more excellent part of performance.In this field, powdering formula laser 3D printing technology needs the fine powder using 0-53 microns
As raw material, Material reinforcement technology can be carried out using nano-ceramic particle, and the adding method of nano-ceramic particle is the skill
The core of art.Property is enlivened for titanium alloy, nano-ceramic particle is added using forging type, then carries out metal liquid mist
The method for changing powder processed cannot achieve.Therefore, how effectively to realize and nano-ceramic particle is added to titanium alloy powder, be mesh
Preceding problem in the urgent need to address.
Property is enlivened for titanium alloy, nano-ceramic particle is added using forging type, then carries out metal liquid mist
The method for changing powder processed cannot achieve.
Therefore, the present invention proposes a kind of system of enhanced titanium alloy powder of nano ceramics for the adding technique of ceramic particle
Standby system is a kind of device of continuous smelting atomization preparation high proportion titanium alloy fine powder, with reference to Fig. 2, comprising: argon gas atomization
Equipment, nano ceramic powder conveying device, argon gas nebulization channel and radio-frequency induction coil；
Argon gas atomization plant includes annular appendix 1, several evenly distributed spray-holes 2 of the surface of annular appendix 1, respectively
The outgassing direction of a spray-hole 2 is direction obliquely, also, the outgassing direction of each spray-hole 2 converges to the position of a vertex of a cone 3
It sets；Annular appendix 1 also has air inlet, and air inlet is connected with argon gas nebulization channel；Argon gas nebulization channel and nano-ceramic powder
Last conveying device is connected；Radio-frequency induction coil is located at the underface of annular appendix 1, also, the center of radio-frequency induction coil
Extended line intersects with the vertex of a cone 3.
Based on the preparation system of the enhanced titanium alloy powder of above-mentioned nano ceramics, with reference to Fig. 1 and Fig. 3, nano ceramics enhancing
The preparation method of Type Titanium Alloy powder, comprising the following steps:
Step 1, the prefabricated nano ceramic powder (for example, nano ceramic powder is TiC or TiN) got ready is packed into nanometer pottery
In porcelain powder conveying device；Titanium alloy rod bar is fixedly installed in the center of radio-frequency induction coil, makes titanium alloy rod bar
Axially-extending line passes through the position of the vertex of a cone 3；
Step 2, then, argon gas atomization plant carries out forvacuum processing, in this forvacuum processing, nano-ceramic powder
Last conveying device also reaches 0.1Pa or less by forvacuum；
After pre- evacuate, the process of argon purge argon gas atomization plant, in the process, nano ceramics can be increased
Powder conveying device does not start first, and after cleaning atomization plant, powder atomization enters normal preparedness.
Step 3, start radio-frequency induction coil, meanwhile, make argon gas nebulization channel to annular 1 conveying high-pressure argon gas of appendix；
On the one hand, titanium alloy rod bar is run down, also, the end of the titanium alloy rod bar run down passes through high-frequency induction
The induced current of coil is fused into continuous drop and drips downwards；On the other hand, since high pressure argon gas and nano ceramic powder convey
Nano ceramic powder in device communicates, and therefore, the high pressure argon gas for carrying nano ceramic powder converges by argon gas nebulization channel
Collect the spray-hole 2 of annular appendix 1, and sprays downwards and form the air curtain for carrying nano ceramic powder, and continuously collect
To the position of the vertex of a cone 3, is collided with the liquid of titanium alloy rod bar drippage, break up titanium alloy drop in the position of the vertex of a cone 3
And form titanium alloy spherical fine powder；Meanwhile evenly dispersed nano ceramic powder is driven into titanium alloy spherical shape carefully in high pressure gas
In powder, and evenly spread to break up after in the titanium alloy spherical fine powder that is formed, ultimately form and be evenly distributed with nano ceramic powder
Titanium alloy spherical fine powder.
In this step, specifically can control following technological parameter: it is 15-40mm/min that titanium alloy rod bar, which runs down speed,；
The power of radio-frequency induction coil is 40-80KW；The feed flow of nano ceramic powder is 50-300g/min；The pressure of high pressure argon gas
Power is 2-6Mpa；The granularity of the nano-ceramic powder powder stock used is 50-200nm.
For above-mentioned technique, emphasis carries out following supplementary explanation:
(1) it is connected due to nano ceramic powder conveying device with argon gas injection channel, by adjusting argon gas injection channel
Powder weight in pressure and nano ceramic powder conveying device, can further control the ejection flow of ceramic powders.Pass through control
The ejection flow of nano ceramic powder processed, the volume fraction of adjustable final enhancing particle obtained, obtains different enhancings
Effect obtains the alloy powder of different performance, is used for different demands field.
(2) during nano ceramic powder ejects, there are two types of Main changes: first is that having compared with atmospheric pressure
Reunion is unlocked in argon gas stream, and nano ceramic powder is made to have obtained more adequately dispersion；Second is that in the air curtain that argon gas stream is constituted
The vertex of air curtain circular cone finally is converged to, and is collided with the titanium alloy liquid stream to drop down, into titanium alloy liquid stream
Portion, and spherical powder is divided to form by the effect of the aerosol dispersion of air-flow.In this way, nano ceramic powder can be uniformly distributed
Into titanium alloy spherical powder, the ceramic powders without entering in titanium alloy powder evenly dispersed can also adhere to titanium conjunction
The surface at bronze end, as satellite powder.
The ceramic particle being present in inside titanium alloy spherical powder is in the majority, and the satellite powder of outer surface is a small amount of.It is such to defend
For star powder in subsequent powdering formula laser fusing 3D printing forming, ceramic powder particle can melt uniformly precipitation point by laser
Cloth becomes the main contributions of Section 2 dispersion-strengtherning in the heterogeneous microstructure of titanium alloy, improves titanium alloy high-temperature intensity.
(3) present invention can be such that nano-ceramic particle is deep into inside Titanium Powder body, obtain internal with nano ceramics
The titanium alloy powder of grain.In addition, can get the titanium alloy of a variety of nano ceramics enhancings by the type of control nano-ceramic particle
Powder.Also, a variety of nano-ceramic particles can be mixed and constitute composite strengthening mechanism, obtain the alloyed powder of composite strengthening mode
Body.
(4) nano-ceramic particle not only enhances alloy bulk, and when combining ejection with high pressure gas, increases previous
The kinetic energy of pure high pressure gas can more refine powder, to obtain the high powder of fine powder recovery rate.
(5) nano-ceramic particle can be made to be distributed in inside powder by the impact even dispersion of high pressure gas, reached
The effect of homogenization.
Using the invention thought of this method, crucible melting legal system can be extended to and take the enhanced powder of nano-ceramic particle
Body, such as high temperature alloy, stainless steel, aluminium alloy.It is still using high pressure gas conveying nano-ceramic particle and dispels alloy height
The mode of geothermal liquid stream, the only mode for being formed by crucible induction melting of liquid flow, and formed using packet mode is poured
Liquid stream.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (1)
1. a kind of enhanced titanium alloy powder of nano ceramics of the preparation system based on the enhanced titanium alloy powder of nano ceramics
Preparation method, which is characterized in that the preparation system of the enhanced titanium alloy powder of nano ceramics includes: argon gas atomization plant, nanometer
Ceramic powders conveying device, argon gas nebulization channel and radio-frequency induction coil；
The argon gas atomization plant includes annular appendix (1), several the evenly distributed sprays of the surface of the annular appendix (1)
Perforation (2), the outgassing direction of each spray-hole (2) are direction, also, the outlet of each spray-hole (2) obliquely
Direction converges to the position of a vertex of a cone (3)；The annular appendix (1) also has air inlet, the air inlet and the argon
Aerosolization channel is connected；The argon gas nebulization channel is connected with the nano ceramic powder conveying device；The radio-frequency induction coil
Circle is located at the underface of the annular appendix (1), also, the extended line at the center of the radio-frequency induction coil and the vertex of a cone
(3) intersect；
Preparation method the following steps are included:
Step 1, the prefabricated nano ceramic powder got ready is fitted into nano ceramic powder conveying device；Titanium alloy rod bar is fixed
It is installed on the center of radio-frequency induction coil, the axially-extending line of titanium alloy rod bar is made to pass through the position of the vertex of a cone (3)；
Step 2, then, argon gas atomization plant carries out forvacuum processing, and in this forvacuum processing, nano ceramic powder is defeated
Device is sent also to reach 0.1Pa or less by forvacuum；
Step 3, start radio-frequency induction coil, meanwhile, make argon gas nebulization channel to annular appendix (1) conveying high-pressure argon gas；
On the one hand, titanium alloy rod bar is run down, also, the end of the titanium alloy rod bar run down passes through radio-frequency induction coil
Induced current be fused into continuous drop and drip downwards；On the other hand, due to high pressure argon gas and nano ceramic powder conveying device
In nano ceramic powder communicate, therefore, carry the high pressure argon gas of nano ceramic powder and be pooled to by argon gas nebulization channel
The spray-hole (2) of annular appendix (1), and spray downwards and form the air curtain for carrying nano ceramic powder, and continuously collect
To the position of the vertex of a cone (3), is collided with the liquid of titanium alloy rod bar drippage, make titanium alloy drop in the position quilt of the vertex of a cone (3)
It breaks up and forms titanium alloy spherical fine powder；Meanwhile evenly dispersed nano ceramic powder is driven into titanium alloy ball in high pressure gas
In shape fine powder, and evenly spread to break up after in the titanium alloy spherical fine powder that is formed, ultimately form and be evenly distributed with nano ceramics
The titanium alloy spherical fine powder of powder；
Wherein, the nano ceramic powder is the nano ceramic powder of single component, or is at least two nano ceramic powders
The mixing nano ceramic powder of formation；
The nano ceramic powder in pressure and nano ceramic powder conveying device in step 3, by adjusting argon gas nebulization channel
Weight, control carry nano ceramic powder high pressure argon gas ejection flow, and then adjust finally be prepared be distributed with
The volume fraction of nano ceramic powder in the titanium alloy spherical fine powder of nano ceramic powder, acquisition is with different reinforcing effects and not
With the alloy powder of performance；
Wherein, the nano ceramic powder is TiC or TiN；
Wherein, in step 3, it is 15-40mm/min that titanium alloy rod bar, which runs down speed,；The power of radio-frequency induction coil is 40-
80KW；The feed flow of nano ceramic powder is 50-300g/min；The pressure of high pressure argon gas is 2-6Mpa；The nanometer of use is made pottery
The granularity of porcelain powder raw material is 50-200nm；
During nano ceramic powder ejects, there are two types of Main changes: first is that having the argon gas stream compared with atmospheric pressure
In unlock reunion, make nano ceramic powder obtained more adequately dispersion；Second is that finally being converged in the air curtain that argon gas stream is constituted
Gather the vertex of air curtain circular cone, and is collided with the titanium alloy liquid stream to drop down, into inside titanium alloy liquid stream, and
Spherical powder is divided to form by the aerosol dispersion effect of air-flow；In this way, nano ceramic powder can be evenly distributed to titanium conjunction
In golden spherical powder, the ceramic powders without entering in titanium alloy powder evenly dispersed can also adhere to titanium alloy powder
Surface, as satellite powder；
The ceramic particle being present in inside titanium alloy spherical powder is in the majority, and the satellite powder of outer surface is a small amount of；Such satellite powder
In subsequent powdering formula laser fusing 3D printing forming, ceramic powder particle, which can melt uniformly to be precipitated by laser, to be distributed in
In the heterogeneous microstructure of titanium alloy, become the main contributions of Section 2 dispersion-strengtherning, improves titanium alloy high-temperature intensity.
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| CN110253029B (en) * | 2019-06-21 | 2020-08-04 | 燕山大学 | Particle-reinforced pre-alloyed powder and preparation method and application thereof |
| CN113245544B (en) * | 2021-06-08 | 2021-10-01 | 西安欧中材料科技有限公司 | Device and method for preparing metal-ceramic coated powder |
| CN115889791A (en) * | 2022-10-11 | 2023-04-04 | 成都先进金属材料产业技术研究院股份有限公司 | Rare earth reinforced titanium-based composite material and preparation method thereof |
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| GB9302387D0 (en) * | 1993-02-06 | 1993-03-24 | Osprey Metals Ltd | Production of powder |
| CN1500022A (en) * | 2000-06-26 | 2004-05-26 | ������������ʽ���� | Method and appts. for producing magnetic rare earth alloy powder, method for prodn. bonded magnet, method for producing rare earth sintering magnet, and method and appts. for improving purity of inert |
| CN102250584B (en) * | 2011-06-11 | 2014-03-26 | 山东理工大学 | Equipment for preparing atomized quick-setting magnetic abrasive |
| KR101517583B1 (en) * | 2013-12-24 | 2015-05-07 | 한국기계연구원 | Apparatus and Method for Manufacturing Minute Powder Using Mixed gas injection |
| CN105665719B (en) * | 2016-01-23 | 2018-02-02 | 山东理工大学 | Mixed powder aerosolization water cooling of freely landing coagulates magnetic abrasive Preparation equipment soon |
| CN105665721B (en) * | 2016-01-23 | 2018-07-31 | 山东理工大学 | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates Metal Substrate chromium oxide magnetic abrasive preparation method soon |
| CN206335133U (en) * | 2016-12-29 | 2017-07-18 | 哈尔滨三地增材制造材料有限公司 | Annular arrangement collision type aerodynamic atomization titanium alloy powder producing equipment |
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