CN110216294A - A kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist - Google Patents
A kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist Download PDFInfo
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- CN110216294A CN110216294A CN201910557669.3A CN201910557669A CN110216294A CN 110216294 A CN110216294 A CN 110216294A CN 201910557669 A CN201910557669 A CN 201910557669A CN 110216294 A CN110216294 A CN 110216294A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
Abstract
The invention discloses a kind of preparation methods of Ni-Ti-Y multicomponent compound metal micro mist, include the following steps: (1) by high-purity N i, Ti, NixTi(1‑x), Y metal wire material processed through the cold deformation of terminal section mold or thermal deformation, premix silk material is respectively prepared；(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；(3) charging parameter is calculated according to raw material proportioning in target composite powder；(4) raw material silk material is sent into plasma torch burner according to above-mentioned charging parameter, it is burnt, composite granule etc. is made after condensation of gasifying, multicomponent compound metal grain size of micropowder prepared by the present invention is evenly distributed, powder particle sphericity is high, and powder flowbility and stability are good, can the process requirements such as the 3D printing of good conformity high-precision, powder metallurgy, particulate metal additive, have a extensive future.
Description
Technical field
The invention belongs to 3D printings, the fast preparation method of powder metallurgy, particulate metal additive, and in particular to a kind of
The preparation method of Ni-Ti-Y multicomponent compound metal micro mist.
Background technique
NiTi marmem has good shape memory effect, and endurance is worn, the characteristics such as biocompatibility,
Bio-medical and aerospace field possess extensive use.The addition of third element Y is modified, and NiTi alloy can be made to have more
Excellent physical property.Ni-Ti-Y multicomponent alloy powder is suitable for the technologies such as 3D printing, powder metallurgy and manufactures complicated shape device,
But the technology of inexpensive quickly manufacture Ni-Ti-Y multicomponent alloy powder still belongs to blank.
NiTi Properties of Shape-Memory Alloys is more sensitive to the atomic ratio of Ni and Ti, and traditional aerosolization and water atomization produce
During metal-powder, due to needing long-time heating by alloy molten before atomization, the oxygen content that will lead in alloy is increased,
Ti element evaporation, the alloy meal component after making atomization fluctuate, and performance is difficult to stablize.Traditional water atomization and aerosolization skill simultaneously
The broad particle distribution of art products obtained therefrom, particle is relatively thick, and designated size range product yield is low, is not suitable for having higher
The production of the Ti alloy powder of value.
Summary of the invention
The purpose of the present invention is to provide a kind of simple process, gained composite granule purity is high, ingredients uniformly, size distribution
The preparation method of the Ni-Ti-Y multicomponent compound metal micro mist of narrow, good sphericity and high income, high production efficiency.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist, includes the following steps:
(1) by high-purity N i, Ti, NixTi(1-x), Y metal wire material processed through the cold deformation of terminal section mold or thermal deformation, make respectively
At diameter≤1.5mm premix silk material；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) raw material silk material is sent into plasma torch burner according to above-mentioned charging parameter, after combustion gasification condenses
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying or screening；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Preferably, Ni, Ti, Ni in step (1)xTi(1-x), Y metal wire material purity >=95%.
Preferably, Ni in step (1)xTi(1-x)X in metal wire material is 0.4-0.6.
Preferably, terminal section processing mold selects diameter for 0.01~1.5mm in step (1).
Preferably, Y is selected from Fe, Nb, W, Cu, Al, Pt, one or more of Pb metal in step (1).
Preferably, raw material thread terminal section processing temperature section is -180 DEG C to 650 DEG C.
Preferably, gas flow sizing machine, sealing machine are connected with plasma burner, and air-flow is nitrogen or argon inert gas.
Preferably, it can be attached under different classification tanks built in sealed in unit.
Compared with prior art, the invention has the benefit that
(1) high-temp plastic of Ni-Ti-Y multicomponent compound metal micro mist prepared by the present invention and enduring quality and intensity and
Antioxygenic property is very excellent, and has the lower coefficient of expansion；
(2) Ni-Ti-Y multicomponent compound metal grain size of micropowder prepared by the present invention is evenly distributed, and particle diameter distribution is narrow, powder
Grain sphericity is high, and powder flowbility and stability are good；
(3) Ni-Ti-Y multicomponent compound metal micro mist of the invention is obtained using the method for plasma torch burning, air current classifying
, preparation method is simple, and speed is fast, is suitble to industrialized production；
(4) Ni-Ti-Y multicomponent compound metal micro mist ingredient prepared by the present invention is uniform, can good conformity high-precision 3D beat
The process requirements such as print, powder metallurgy, particulate metal additive, have a extensive future.
Detailed description of the invention
Fig. 1 is the SEM figure of Ni-Ti-Fe multicomponent compound metal micro mist prepared by the embodiment of the present invention 1.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A kind of fast preparation method of Ni-Ti-Fe multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, Fe metal wire material is through the cold deformation of terminal section mold or warm
Diameter≤1.5mm premix silk material is respectively prepared in deformation processing；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Embodiment 2
A kind of fast preparation method of Ni-Ti-Nb multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, Nb metal wire material is through the cold deformation of terminal section mold or warm
Diameter≤1.5mm premix silk material is respectively prepared in deformation processing；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Embodiment 3
A kind of fast preparation method of Ni-Ti-W multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, W metal wire material is through the cold deformation of terminal section mold or thermal change
Shape processing, is respectively prepared diameter≤1.5mm premix silk material；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Embodiment 4
A kind of fast preparation method of Ni-Ti-Cu multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, Cu metal wire material is through the cold deformation of terminal section mold or warm
Diameter≤1.5mm premix silk material is respectively prepared in deformation processing；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Embodiment 5
A kind of fast preparation method of Ni-Ti-Pt multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, Pt metal wire material is through the cold deformation of terminal section mold or warm
Diameter≤1.5mm premix silk material is respectively prepared in deformation processing；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
Embodiment 6
A kind of fast preparation method of Ni-Ti-Pb multicomponent compound metal micro mist, includes the following steps:
(1) high-purity N i, Ti, Ni by purity >=95%0.5Ti0.5, Pb metal wire material is through the cold deformation of terminal section mold or warm
Diameter≤1.5mm premix silk material is respectively prepared in deformation processing；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:
In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material
Diameter, v are into silk speed, and n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) it is sent into raw material silk material into plasma torch burner according to above-mentioned charging parameter, is burnt, after condensation of gasifying
Composite granule is made；
(5) by powder obtained by step (4) through air current classifying；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
The physical property of multicomponent compound metal micro mist prepared by embodiment 1-6 is measured, the result is as follows:
| Embodiment | Average grain diameter (μm) | Apparent density (g/cm3) | Sphericity |
| Embodiment 1 | 10±1 | 1.28±0.1 | 0.96 |
| Embodiment 2 | 13±1 | 1.31±0.1 | 0.94 |
| Embodiment 3 | 16±1 | 1.36±0.1 | 0.95 |
| Embodiment 4 | 12±1 | 1.29±0.1 | 0.94 |
| Embodiment 5 | 13±1 | 1.32±0.1 | 0.93 |
| Embodiment 6 | 14±1 | 1.35±0.1 | 0.95 |
As seen from the above table, the multicomponent compound metal micro mist sphericity by the embodiment 1-6 of present invention process preparation is high, partial size
Narrowly distributing and high apparent density, it can be ensured that the conveying of powder is smooth during 3D printing, and defect is avoided to generate.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist, which comprises the steps of:
(1) by high-purity N i, Ti, NixTi(1-x), Y metal wire material processed through the cold deformation of terminal section mold or thermal deformation, be respectively prepared straight
Diameter≤1.5mm premix silk material；
(2) above-mentioned silk material is cleaned through oil removing, pickling, ultrasound, physics polishing process to surface free from admixture respectively；
(3) charging parameter is calculated according to raw material proportioning in target composite powder, wherein feed the calculation formula of parameter are as follows:In formula, kNIt is the relative atom ratio of particular types element N in target powder, d is raw material silk material diameter, v
It is into silk speed, n is the relative atomic mass of corresponding element, and ρ is the density of raw material thread；
(4) raw material thread is sent into heat plasma flame burner or induction plasma flame burner according to above-mentioned charging parameter
Material is burnt, composite granule is made after condensation of gasifying.Heat plasma flame workspace Ar atmospheric pressure is 102~104Pa, arc voltage
For 5~40V, arc current is 35~350A.Induction plasma power is 5~60kW, coil 1~10MHz of frequency of oscillation, core
Gas is Ar gas, and flow is 0.3~4L/h, and side gas is N2Gas, flow are 1~10L/h.
(5) by powder obtained by step (4) through air current classifying or screening；
(6) powder after step (5) classification is directly encapsulated under the protection of inert gas.
2. preparation method according to claim 1, which is characterized in that Ni, Ti, Ni in step (1)xTi(1-x), Y wire
The purity of material is >=95%.
3. preparation method according to claim 1, which is characterized in that Ni in step (1)xTi(1-x)X in metal wire material is
0.4-0.6。
4. preparation method according to claim 1, which is characterized in that in step (1) terminal section processing mold select diameter for
0.01~1.5mm.
5. preparation method according to claim 1, which is characterized in that in step (1) Y be selected from Fe, Nb, W, Cu, Al,
One or more of Pt, Pb metal.
6. preparation method according to claim 1, which is characterized in that raw material thread terminal section processing temperature section be -180 DEG C extremely
650℃。
7. preparation method according to claim 1, which is characterized in that gas flow sizing machine, sealing machine and plasma burner
It is connected, air-flow is nitrogen or argon inert gas.
8. preparation method according to claim 1, which is characterized in that can be carried out under different classification tanks built in sealed in unit
Connection.
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| JPH02107505A (en) * | 1988-10-14 | 1990-04-19 | Mitsubishi Heavy Ind Ltd | Production of hydrogen and oxide-based ceramic fine powder |
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Application publication date: 20190910 |