CN116444272A - Preparation method of rotating disc, rotating disc and application of rotating disc - Google Patents

Preparation method of rotating disc, rotating disc and application of rotating disc Download PDF

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Publication number
CN116444272A
CN116444272A CN202310238773.2A CN202310238773A CN116444272A CN 116444272 A CN116444272 A CN 116444272A CN 202310238773 A CN202310238773 A CN 202310238773A CN 116444272 A CN116444272 A CN 116444272A
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raw material
printing
material particles
slurry
rotating disc
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谢波
吴旺
刘永胜
刘芯宇
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Chengdu Advanced Metal Materials Industry Technology Research Institute Co Ltd
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Chengdu Advanced Metal Materials Industry Technology Research Institute Co Ltd
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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
    • B22F9/06—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
    • B22F9/10—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 using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • C04B35/505—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds based on yttrium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63424—Polyacrylates; Polymethacrylates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6026—Computer aided shaping, e.g. rapid prototyping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Composite Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a preparation method of a rotating disk, the rotating disk and application thereof, wherein the method comprises the following steps of 2 O 3 Mixing the powder, the binder and the dispersing agent to obtain slurry; extruding the slurry to obtain raw material particles; and 3D printing, degreasing and sintering the raw material particles to obtain the rotating disc. The invention prepares high Y by mixing materials 2 O 3 The slurry with the content is extruded, and the diameter and sphericity are controlled to obtain raw material particles; the raw material particles can be subjected to 3D printing treatment to obtain rotary disc blanks in various shapes, degreasing the rotary disc blanks at a proper temperature, and then sintering to obtain the rotary disc. The result shows that the rotating disk prepared by the invention has good use effect and long service life, and has good prospect when being used for preparing titanium and titanium alloy powder by centrifugal atomization.

Description

Preparation method of rotating disc, rotating disc and application of rotating disc
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a preparation method of a rotating disc, the rotating disc and application thereof.
Background
In the technology for preparing titanium and titanium alloy powder by centrifugal atomization, besides the structural design of a smelting system, the design and preparation of a rotating disk become bottlenecks for restricting the technical development of preparing titanium and titanium alloy powder by centrifugal atomization of the rotating disk. The rotating disk is positioned at the lower center of the guide pipe and is a core component in a device for preparing titanium and titanium alloy powder. Molten metal flows to the center of a rotating disk rotating at high speed, breaks up into droplets from the edge of the disk due to centrifugal action, and the droplets become spherical due to surface tension and solidify in the medium as spherical powder. The material, shape and size of the rotating disc and factors such as wettability, thermal strength, scouring loss and the like of titanium and titanium alloy melt have important influences on particle size distribution, sphericity and stability of the powder of titanium and titanium alloy in the whole centrifugal atomization process. The preparation method of the high-performance rotating disc is currently urgently needed, and has great practical significance.
Y 2 O 3 The ceramic not only has excellent heat resistance and high-temperature stability, but also has better chemical stability, and is not easy to react with high-activity metals and alloys at high temperature. In recent years by Y 2 O 3 Crucible and ceramic tubes as coatings have been used in induction melting and directional solidification studies of highly reactive metal alloys. Currently, Y 2 O 3 Ceramics are mainly prepared by the traditional powder metallurgy method of die compression molding and re-sintering, which has simple process and high efficiency, but is difficult to prepare ceramic parts with complex shapes and uniform microstructures. Titanium and titanium alloy have high melting point and strong activity, and titanium alloy powder is prepared at presentThe last rotating disk is generally formed by spraying a high-temperature ceramic material on the surface of a metal matrix, is easy to crack and short in service life, and has unique advantages of flexible control in design and manufacture along with the Additive Manufacturing (AM) technology, so that the manufacturing of the rotating disk with a complex shape is possible. The ceramic indirect 3D printing technology, namely the powder extrusion printing technology (Powder Extrusionprnting, PEP), is different from the direct 3D printing technology which utilizes high-strength energy beams to sinter or melt materials such as metal and the like to synchronously obtain the shape and the performance of a product, and the PEP is used for obtaining the shape and the performance of the product step by step. The model preparation without the mould is realized through 3D printing, so that the manufacturing cost and the time cost are saved. After the green compact is obtained, degreasing and sintering are carried out on the product by using a related process of powder injection molding, and the product with consistent and excellent performance is obtained.
Disclosure of Invention
In view of the development of the prior art, the invention combines the advantages of 3D printing and powder injection molding to prepare the rotary disk used for preparing titanium and titanium alloy powder by centrifugal atomization.
In order to achieve the above object, the present invention provides a method for manufacturing a rotary disk, comprising,
y is set to 2 O 3 Mixing the powder, the binder and the dispersing agent to obtain slurry;
extruding the slurry to obtain raw material particles;
and 3D printing, degreasing and sintering the raw material particles to obtain the rotating disc.
Further, the components of the slurry are as follows by mass percent,
1-4% of a binder;
0.1-0.5% of dispersant;
the balance is Y 2 O 3 And (3) powder.
Further, the binder includes at least one of polyvinyl alcohol and polyacrylic acid;
the dispersant comprises ammonium polyacrylate.
Further, the binder is formed by mixing polyvinyl alcohol and polyacrylic acid in a mass ratio of 1:1-1:5.
Further, the diameter of the raw material particles is 0.5-1.2mm, and the sphericity is not less than 0.83.
Further, the 3D printing includes,
drawing a drawing of the rotating disc and converting the drawing into readable data;
transmitting the readable data to a 3D printer, and printing and forming the raw material particles by the 3D printer to obtain a rotary disc blank;
the printing process also comprises the steps of controlling printing parameters: the speed is 20-120mm/s; the layer thickness is 0.05-1.5mm; the temperature of the nozzle is 120-250 ℃.
Further, the degreasing is kept at the temperature of 250-350 ℃ for 2-4 hours.
Further, the sintering is kept at 1400-2000 ℃ for 5-8 hours.
The invention also provides a rotary disk, which is prepared by adopting the preparation method.
The invention also provides application of the rotary disk, which is used as the rotary disk for preparing titanium and titanium alloy powder by centrifugal atomization.
Compared with the prior art, the invention has the following beneficial effects:
the invention prepares high Y by mixing materials 2 O 3 The slurry with the content is extruded, and the diameter and sphericity are controlled to obtain raw material particles; the raw material particles can be subjected to 3D printing treatment to obtain rotary disc blanks in various shapes, degreasing the rotary disc blanks at a proper temperature, and then sintering to obtain the rotary disc. The result shows that the rotating disk prepared by the invention has good use effect and long service life, and has good prospect when being used for preparing titanium and titanium alloy powder by centrifugal atomization.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the steps particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a flow chart of a method of preparing a rotating disk of the present invention;
fig. 2 shows a schematic structural view of a rotary disk of different shape according to the invention.
Detailed Description
The endpoints of the ranges and any values disclosed in the present invention are not limited to the precise range or value, and the range or value should be understood to include values close to the range or value. For numerical ranges, one or more new numerical ranges may be obtained in combination with each other between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point values, and are to be considered as specifically disclosed in the present invention.
The design concept of the invention is that the 3D printing technology is an effective method for preparing complex shapes and uniform microstructures; the powder injection molding conditions are easy to control; y is Y 2 O 3 Has excellent heat resistance, high temperature stability and better chemical stability. Combining 3D printing technology with powder injection molding, and controlling Y in raw materials 2 O 3 And the mass ratio of the titanium powder to other powder can be used for rapidly preparing high-performance rotary discs for preparing titanium and titanium alloy powder through centrifugal atomization.
As shown in fig. 1, the invention provides a preparation method of a rotary disk, comprising the following steps:
s101, Y 2 O 3 Mixing the powder, the binder and the dispersing agent to obtain slurry;
s102, extruding the slurry to obtain raw material particles;
and S103, performing 3D printing, degreasing and sintering on the raw material particles to obtain the rotating disc.
Preferably, the slurry comprises 1-4% of binder; 0.1-0.5% of dispersant; the balance is Y 2 O 3 And (3) powder.
Preferably, the binder comprises at least one of polyvinyl alcohol and polyacrylic acid; the dispersant comprises ammonium polyacrylate.
Further preferably, the binder is formed by mixing polyvinyl alcohol and polyacrylic acid in a mass ratio of 1:1-1:5.
Preferably, the diameter of the raw material particles is 0.5-1.2mm, and the sphericity is not less than 0.83.
Preferably, the 3D printing includes drawing a rotating disc drawing and converting into readable data; and transmitting the readable data to a 3D printer, and printing and forming the raw material particles by the 3D printer.
More specifically, the 3D printing includes performing model design: drawing a rotating disc drawing on a computer, converting the rotating disc drawing into an STL file format, cutting the STL file into a series of slice data of ordered slices with a certain thickness by using slicing software, and transmitting the slice data to a 3D printer system; and printing and forming the raw material particles by a 3D printer to obtain a rotary disc blank. Fig. 2 shows a schematic structural view of a rotary disk blank, which is similar to a crescent end of a crescent shovel, two ends of a half H-shaped steel (separated by a vertical section) transverse part are provided with protrusions and arrows from left to right, and the structure shows that raw material particles can be printed out of rotary disk blanks with different shapes through 3D printing according to actual needs.
Preferably, printing further comprises controlling printing parameters: the speed is 20-120mm/s; the layer thickness is 0.05-1.5mm; the temperature of the nozzle is 120-250 ℃.
Preferably, the degreasing is kept at a temperature of 250-350 ℃ for 2-4 hours.
Preferably, the sintering is maintained at a temperature of 1400-2000 ℃ for 5-8 hours.
The invention also provides a rotary disk, which is prepared by using the preparation method.
The invention also provides application of the rotary disk, which is used as a rotary disk for preparing titanium and titanium alloy powder by centrifugal atomization.
It should be noted that, before step S101, the model design operation of the 3D printing in step S103 of the present invention may be flexibly adjusted according to the need during the actual operation.
In the present invention, each of the raw reagent materials is commercially available, and the experimental method without specifying the specific conditions is a conventional method and conventional conditions well known in the art, or according to the conditions recommended by the instrument manufacturer.
The following description of the embodiments of the present invention will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In the examples, each of the starting reagent materials is commercially available, and the experimental methods without specifying the specific conditions are conventional methods and conventional conditions well known in the art, or according to the conditions recommended by the instrument manufacturer.
Example 1
A preparation method of a rotary disk comprises the following steps,
step 1, design of a rotating disk model
Drawing a rotating disc drawing on a computer, converting the rotating disc drawing into an STL file format, cutting the STL file into a series of slice data of ordered slices with a certain thickness by using slicing software, and transmitting the slice data to a 3D printer system.
Step 2, mixing materials
Y is set to 2 O 3 Mixing the powder, polyvinyl alcohol, polyacrylic acid and ammonium polyacrylate to obtain slurry, wherein the slurry comprises 97.4% of Y by mass percent 2 O 3 Powder, 0.5% polyvinyl alcohol, 2% polyacrylic acid, and 0.1% ammonium polyacrylate.
Step 3, granulating
Transferring the slurry to an extrusion granulator to extrude a slurry containing Y with a diameter of 0.5mm and a sphericity of 0.84 2 O 3 Raw material particles of the powder.
Step 4, 3D printing
And setting the printing speed to be 60mm/s, the printing layer thickness to be 0.5mm and the nozzle temperature to be 200 ℃ by using a ceramic 3D printer, and printing and forming the raw material particles to obtain a cup-shaped rotary disc blank.
Step 5, degreasing
And (5) placing the rotating disc blank into a degreasing furnace at 350 ℃ for heat preservation for 2 hours for degreasing, and taking out the degreased rotating disc blank.
Step 6, sintering
And (3) placing the degreased rotary disc blank into a vacuum sintering furnace, heating to 1600 ℃ at a heating rate of 400 ℃/h, preserving heat for 6 hours, taking out, and cooling to room temperature to obtain the cup-shaped rotary disc.
Example 2
A preparation method of a rotary disk comprises the following steps,
step 1, design of a rotating disk model
Drawing a rotating disc drawing on a computer, converting the rotating disc drawing into an STL file format, cutting the STL file into a series of slice data of ordered slices with a certain thickness by using slicing software, and transmitting the slice data to a 3D printer system.
Step 2, mixing materials
Y is set to 2 O 3 Mixing the powder, polyvinyl alcohol, polyacrylic acid and ammonium polyacrylate to obtain slurry, wherein the slurry comprises, by mass, 98.5% of Y 2 O 3 Powder, 0.5% polyvinyl alcohol, 0.5% polyacrylic acid, and 0.5% ammonium polyacrylate.
Step 3, granulating
Transferring the slurry to an extrusion granulator to extrude a slurry containing Y having a diameter of 1.2mm and a sphericity of 0.84 2 O 3 Raw material particles of the powder.
Step 4, 3D printing
And setting the printing speed to 120mm/s, the printing layer thickness to 1.5mm and the nozzle temperature to 250 ℃ by using a ceramic 3D printer, and printing and forming the raw material particles to obtain a bowl-shaped rotary disc blank.
Step 5, degreasing
And (5) placing the rotating disc blank into a degreasing furnace at 250 ℃ for heat preservation for 2 hours for degreasing, and taking out the degreased rotating disc blank.
Step 6, sintering
And (3) placing the degreased rotary disc blank into a vacuum sintering furnace, heating to 2000 ℃ at a heating rate of 400 ℃/h, preserving heat for 8 hours, taking out, and cooling to room temperature to obtain the bowl-shaped rotary disc.
Example 3
A preparation method of a rotary disk comprises the following steps,
step 1, design of a rotating disk model
Drawing a rotating disc drawing on a computer, converting the rotating disc drawing into an STL file format, cutting the STL file into a series of slice data of ordered slices with a certain thickness by using slicing software, and transmitting the slice data to a 3D printer system.
Step 2, mixing materials
Y is set to 2 O 3 Mixing the powder, polyvinyl alcohol, polyacrylic acid and ammonium polyacrylate to obtain slurry, wherein the slurry comprises, by mass, 95.7% of Y 2 O 3 Powder, 1.5% polyvinyl alcohol, 2.5% polyacrylic acid, and 0.3% ammonium polyacrylate.
Step 3, granulating
Transferring the slurry to an extrusion granulator to extrude a slurry containing Y having a diameter of 1.0mm and a sphericity of 0.84 2 O 3 Raw material particles of the powder.
Step 4, 3D printing
And setting the printing speed to be 20mm/s, the printing layer thickness to be 0.05mm and the nozzle temperature to be 120 ℃ by using a ceramic 3D printer, and printing and forming the raw material particles to obtain an umbrella-shaped rotary disc blank.
Step 5, degreasing
And (5) placing the rotating disc blank into a degreasing furnace at 300 ℃ for heat preservation for 4 hours for degreasing, and taking out the degreased rotating disc blank.
Step 6, sintering
And (3) placing the degreased rotary disc blank into a vacuum sintering furnace, heating to 1800 ℃ at a heating rate of 400 ℃/h, preserving heat for 5 hours, taking out, and cooling to room temperature to obtain the umbrella-shaped rotary disc.
Comparative example
The powder is prepared by adopting the existing powder metallurgy method, and the powder is prepared by adopting the traditional powder metallurgy method of die compression molding and re-sintering.
Wherein the composition and shape of the rotating disk of the comparative example were the same as those of example 2.
The products prepared in example 2 and comparative example were used as rotating discs for centrifugal atomization to prepare titanium and titanium alloy powders. The practical application results show that under the same use conditions, the service life of the comparative example is 300h, while the service life of the rotating disc of example 2 is 1000h more than three times that of the comparative example. These results show that the method of the comparative example has simple process and high efficiency, but the preparation of the rotating disc with complex shape has the problems of difficult demoulding, easy cracking, breaking and the like. The embodiment of the invention prepares the spherical Y by adopting the slurry proportioning 2 O 3 And 3D printing to prepare the component with a complex shape and uniform microstructure, degreasing and sintering to obtain a finished product, and prolonging the service life. In addition, a variety of shapes of rotating discs can be designed based on 3D printing technology.
In conclusion, the invention prepares the high Y by mixing 2 O 3 The slurry with the content is extruded, and the diameter and sphericity are controlled to obtain raw material particles; the raw material particles can be subjected to 3D printing treatment to obtain rotary disc blanks in various shapes, degreasing the rotary disc blanks at a proper temperature, and then sintering to obtain the rotary disc. The result shows that the rotating disk prepared by the invention has good use effect and long service life, and has good prospect when being used for preparing titanium and titanium alloy powder by centrifugal atomization.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. A preparation method of a rotary disk is characterized by comprising the following steps of,
y is set to 2 O 3 Mixing the powder, the binder and the dispersing agent to obtain slurry;
extruding the slurry to obtain raw material particles;
and 3D printing, degreasing and sintering the raw material particles to obtain the rotating disc.
2. The preparation method according to claim 1, wherein the slurry comprises the following components in percentage by mass,
1-4% of a binder;
0.1-0.5% of dispersant;
the balance is Y 2 O 3 And (3) powder.
3. The method of manufacturing according to claim 1, wherein the binder comprises at least one of polyvinyl alcohol and polyacrylic acid;
the dispersant comprises ammonium polyacrylate.
4. The preparation method according to claim 3, wherein the binder is prepared by mixing polyvinyl alcohol and polyacrylic acid in a mass ratio of 1:1-1:5.
5. The method according to claim 1, wherein the raw material particles have a diameter of 0.5 to 1.2mm and a sphericity of not less than 0.83.
6. The method of manufacturing according to claim 1, wherein the 3D printing comprises,
drawing a drawing of the rotating disc and converting the drawing into readable data;
transmitting the readable data to a 3D printer, and printing and forming the raw material particles by the 3D printer to obtain a rotary disc blank;
the printing process also comprises the steps of controlling printing parameters: the speed is 20-120mm/s; the layer thickness is 0.05-1.5mm; the temperature of the nozzle is 120-250 ℃.
7. The method according to claim 1, wherein the degreasing is performed at a temperature of 250 to 350 ℃ for 2 to 4 hours.
8. The method according to claim 1, wherein the sintering is carried out at a temperature of 1400-2000 ℃ for 5-8 hours.
9. A rotary disk, characterized in that it is produced by the production method according to any one of claims 1 to 8.
10. Use of a rotating disk according to claim 9 as a rotating disk for centrifugal atomization of titanium and titanium alloy powders.
CN202310238773.2A 2023-03-13 2023-03-13 Preparation method of rotating disc, rotating disc and application of rotating disc Pending CN116444272A (en)

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