CN111197130A - 3D printing metal powder for dental activity restoration and preparation method thereof - Google Patents
3D printing metal powder for dental activity restoration and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/34—Process control of powder characteristics, e.g. density, oxidation or flowability
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- 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
- B22F9/082—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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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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Abstract
The invention discloses 3D printing metal powder for dental activity restoration and a preparation method thereof, and the 3D printing metal powder for dental activity restoration comprises the following raw materials in parts by mass: 20-30% of Cr, 5-10% of Mo, 1-5% of Ag, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Mn, less than or equal to 1.0% of Si, less than or equal to 0.05% of Ni, less than or equal to 0.3% of C, less than or equal to 0.02% of Be, less than or equal to 0.02% of Cd and a Co matrix. A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps: 1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace; 2) atomizing to prepare powder; 3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas; 4) selective area laser melting (SLM) shaping. The invention meets the performance requirement of the movable prosthesis and has antibacterial property.
Description
Technical Field
The invention relates to 3D printing metal powder for dental activity restoration and a preparation method thereof.
Background
At present, the metal material for movable restoration of dentistry has no material mark recommended by national and industry standards, and the material components in the standard of surgical implant bone joint prosthesis forging and casting cobalt chromium molybdenum alloy casting in the national pharmaceutical industry standard YY01173-2005 are generally borrowed in the market: 26.5 to 30.0 percent of Cr, 4.5 to 7.0 percent of Mo, less than or equal to 1.0 percent of Ni, less than or equal to 1.0 percent of Fe, less than or equal to 1.0 percent of Mn, less than or equal to 1.0 percent of Si, less than or equal to 0.35 percent of C and a Co matrix.
Dental and orthopaedic use environments and performance requirements for materials vary, and therefore need to be adjusted on this basis. Removable dentures such as removable partial dentures, clasps, implant superstructure, etc., require materials with excellent toughness and resistance to bending fatigue, which are not satisfactory for use. In the using process, the removable denture is usually required to be repeatedly taken off, and is directly contacted with a human body when in use, and the removable denture has the best antibacterial function in the oral environment. Therefore, the invention designs a metal material suitable for the dental movable restoration body and a preparation method thereof.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the defects in the prior art and provides 3D printing metal powder for dental active restoration and a preparation method thereof.
The technical scheme is as follows: the invention relates to 3D printing metal powder for dental active restoration and a preparation method thereof,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
20-30% of Cr, 5-10% of Mo, 1-5% of Ag, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Mn, less than or equal to 1.0% of Si, less than or equal to 0.05% of Ni, less than or equal to 0.3% of C, less than or equal to 0.02% of Be, less than or equal to 0.02% of Cd and a Co matrix.
The invention further improves the technical scheme that the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass: 28 percent of Cr, 6 percent of Mo, 2.5 percent of Ag, less than or equal to 0.5 percent of Fe, less than or equal to 0.5 percent of Mn, less than or equal to 1.0 percent of Si, less than or equal to 0.05 percent of Ni, less than or equal to 0.3 percent of C, less than or equal to 0.02 percent of Be, less than or equal to 0.02 percent of Cd and a Co substrate.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder;
4) selective area laser melting (SLM) shaping.
The invention has the further improvement that in the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes.
The invention has the further improvement that in the step 4), the laser power is 100-200W, the scanning speed is 1000-1500 mm/s, the printing interval is 50-100 mu m, the spot diameter is 50-100 mu m, and the powder spreading layer is 20-50 mu m thick.
Compared with the prior art, the 3D printing metal powder for dental active restoration and the preparation method thereof provided by the invention at least realize the following beneficial effects:
1. the alloy component is a component which is independently designed and developed, and the product has antibacterial property while meeting the performance requirement of the dental movable restoration.
2. Silver (Ag) ions and compounds are toxic to certain bacteria, viruses, algae, and fungi, but are almost completely harmless to the human body. Since Ag having biological antibacterial properties is required to be in a very fine powder state or a nano-state, alloys and products are produced by a powder method.
3. The metal powder prepared by adopting vacuum supersonic atomization has the advantages of high powder purity, high powder sphericity, excellent fluidity, low powder oxygen content, high powder stability, high powder yield and the like, and is particularly suitable for industrial large-scale manufacturing.
4. The Selective Laser Melting (SLM) forming can realize the manufacture of the dental prosthesis with customized and personalized systems, and the efficiency, the precision, the performance, the cost and the environmental protection are all superior to those of the existing casting process.
Of course, it is not specifically necessary for any one product that implements the invention to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
In the case of the example 1, the following examples are given,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
20-30% of Cr, 5-10% of Mo, 1-5% of Ag, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Mn, less than or equal to 1.0% of Si, less than or equal to 0.05% of Ni, less than or equal to 0.3% of C, less than or equal to 0.02% of Be, less than or equal to 0.02% of Cd and a Co matrix.
The invention further improves the technical scheme that the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass: 28 percent of Cr, 6 percent of Mo, 2.5 percent of Ag, less than or equal to 0.5 percent of Fe, less than or equal to 0.5 percent of Mn, less than or equal to 1.0 percent of Si, less than or equal to 0.05 percent of Ni, less than or equal to 0.3 percent of C, less than or equal to 0.02 percent of Be, less than or equal to 0.02 percent of Cd and a Co substrate.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
To further explain this embodiment, in step 3), the mesh number used in the screening is: 100 meshes or 270 meshes.
To further explain the embodiment, in the step 4), the laser power is 100-200W, the scanning speed is 1000-1500 mm/s, the printing pitch is 50-100 μm, the spot diameter is 50-100 μm, and the powder spreading layer thickness is 20-50 μm.
In the case of the example 2, the following examples are given,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
20% of Cr, 5% of Mo, 1% of Ag, 0.5% of Fe, 0.5% of Mn, 1.0% of Si, 0.05% of Ni, 0.3% of C, 0.02% of Be, 0.02% of Cd0.02% and a Co matrix.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 100W, the scanning speed is 1000 mm/s, the printing interval is 50 μm, the spot diameter is 50 μm, and the powder spreading layer thickness is 20 μm.
In the case of the example 3, the following examples are given,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
30% of Cr, 10% of Mo, 5% of Ag, 0.5% of Fe, 0.5% of Mn, 1.0% of Si, 0.05% of Ni, 0.3% of C, 0.02% of Be, 0.02% of Cd0.02% and a Co matrix.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 100W, the scanning speed is 1500mm/s, the printing interval is 100 mu m, the spot diameter is 100 mu m, and the powder spreading layer is 50 mu m thick.
In the case of the example 4, the following examples are given,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
28% of Cr, 6% of Mo, 2.5% of Ag, 0.5% of Fe, 0.5% of Mn, 1.0% of Si, 0.05% of Ni, 0.3% of C, 0.02% of Be, 0.02% of Cd0.02% and a Co matrix.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 100W, the scanning speed is 1200mm/s, the printing interval is 80 μm, the spot diameter is 80 μm, and the powder spreading layer is 30 μm thick.
In the case of the example 5, the following examples were conducted,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
25% of Cr, 7% of Mo, 3% of Ag, 0.5% of Fe, 0.5% of Mn, 1.0% of Si, 0.05% of Ni, 0.3% of C, 0.02% of Be, 0.02% of Cd0.02% and a Co matrix.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 1200W, the scanning speed is 1500mm/s, the printing interval is 100 mu m, the spot diameter is 100 mu m, and the powder spreading layer is 50 mu m thick.
In the case of the example 6, it is shown,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
28% of Cr, 7% of Mo, 3% of Ag, 0.2% of Fe, 0.2% of Mn, 0.5% of Si, 0.01% of Ni, 0.2% of C, 0.01% of Be, 0.01% of Cd0.01% and a Co matrix.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 200W, the scanning speed is 1000 mm/s, the printing interval is 50 μm, the spot diameter is 50 μm, and the powder spreading layer thickness is 20 μm.
In the case of the example 7, the following examples are given,
the 3D printing metal powder for the dental activity restoration comprises the following raw materials in parts by mass:
22% of Cr, 9% of Mo, 2% of Ag, 0.5% of Fe, 0.3% of Mn, 0.4% of Si, 0.01% of Ni, 0.2% of C, 0.01% of Be, 0.02% of Cd and a Co substrate.
A preparation method of 3D printing metal powder for dental activity restoration comprises the following specific steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder without hollow powder, and meeting the application requirement of a Selective Laser Melting (SLM) process;
4) selective area laser melting (SLM) shaping.
In the step 3), the mesh number of the adopted screen during screening is as follows: 100 meshes or 270 meshes. In the step 4), the laser power is 150W, the scanning speed is 1100mm/s, the printing interval is 70 μm, the spot diameter is 75 μm, and the powder spreading layer is 30 μm thick.
According to the embodiment, the 3D printing metal powder for repairing the dental activities and the preparation method thereof provided by the invention at least realize the following beneficial effects:
1. the alloy component is a component which is independently designed and developed, and the product has antibacterial property while meeting the performance requirement of the dental movable restoration.
2. Silver (Ag) ions and compounds are toxic to certain bacteria, viruses, algae, and fungi, but are almost completely harmless to the human body. Since Ag having biological antibacterial properties is required to be in a very fine powder state or a nano-state, alloys and products are produced by a powder method.
3. The metal powder prepared by adopting vacuum supersonic atomization has the advantages of high powder purity, high powder sphericity, excellent fluidity, low powder oxygen content, high powder stability, high powder yield and the like, and is particularly suitable for industrial large-scale manufacturing.
4. The Selective Laser Melting (SLM) forming can realize the manufacture of the dental prosthesis with customized and personalized systems, and the efficiency, the precision, the performance, the cost and the environmental protection are all superior to those of the existing casting process.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (5)
1. The 3D printing metal powder for dental activity restoration is characterized by comprising the following raw materials in parts by mass:
20-30% of Cr, 5-10% of Mo, 1-5% of Ag, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Mn, less than or equal to 1.0% of Si, less than or equal to 0.05% of Ni, less than or equal to 0.3% of C, less than or equal to 0.02% of Be, less than or equal to 0.02% of Cd and a Co matrix.
2. The 3D printing metal powder for dental active restoration according to claim 1, which is prepared from the following raw materials in parts by mass:
28 percent of Cr, 6 percent of Mo, 2.5 percent of Ag, less than or equal to 0.5 percent of Fe, less than or equal to 0.5 percent of Mn, less than or equal to 1.0 percent of Si, less than or equal to 0.05 percent of Ni, less than or equal to 0.3 percent of C, less than or equal to 0.02 percent of Be, less than or equal to 0.02 percent of Cd and a Co substrate.
3. The preparation method of 3D printing metal powder for dental active restoration according to claim 1, comprising the following steps:
1) smelting, namely preparing prepared chemical components, preparing a master alloy ingot by adopting vacuum induction smelting, and cutting off the defect of shrinkage cavity at the head; carrying out component homogenization heat treatment on the master alloy ingot by adopting a vacuum heat treatment furnace;
2) atomizing to prepare powder, namely enabling the alloy melt to freely flow downwards into a gas atomizing furnace in a vacuum gas atomizing furnace, crushing the alloy melt into fine liquid drops under the impact action of supersonic airflow, and cooling and solidifying to obtain alloy powder;
3) screening, namely screening the prepared alloy powder by adopting an ultrasonic vibration screen under the protection of inert gas to obtain spherical CoCrAgMo alloy powder;
4) selective area laser melting (SLM) shaping.
4. The method for preparing 3D printing metal powder for dental active restoration according to claim 3, wherein in the step 3), the screening is performed by using the following screens: 100 meshes or 270 meshes.
5. The preparation method of 3D printing metal powder for dental active restoration according to claim 3, wherein in the step 4), the laser power is 100-200W, the scanning speed is 1000-1500 mm/s, the printing pitch is 50-100 μm, the spot diameter is 50-100 μm, and the powder spreading layer is 20-50 μm thick.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4063042A1 (en) * | 2021-03-24 | 2022-09-28 | MeKo Laserstrahl-Materialbearbeitungen e.K. | Composite material with silver integration as an antibacterial matrix material, especially for biofilm reduction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102016111594A1 (en) * | 2016-06-24 | 2017-12-28 | Vdm Metals International Gmbh | PRECIO-METAL-FREE METAL POWDER |
| CN109576533A (en) * | 2018-11-13 | 2019-04-05 | 佛山市佛冠义齿有限公司 | A kind of antimicrobial form cochrome and preparation method thereof |
| CN109570519A (en) * | 2019-01-31 | 2019-04-05 | 上海材料研究所 | A kind of preparation method of the CoCrMo alloy powder for 3D printing |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102016111594A1 (en) * | 2016-06-24 | 2017-12-28 | Vdm Metals International Gmbh | PRECIO-METAL-FREE METAL POWDER |
| CN109576533A (en) * | 2018-11-13 | 2019-04-05 | 佛山市佛冠义齿有限公司 | A kind of antimicrobial form cochrome and preparation method thereof |
| CN109570519A (en) * | 2019-01-31 | 2019-04-05 | 上海材料研究所 | A kind of preparation method of the CoCrMo alloy powder for 3D printing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4063042A1 (en) * | 2021-03-24 | 2022-09-28 | MeKo Laserstrahl-Materialbearbeitungen e.K. | Composite material with silver integration as an antibacterial matrix material, especially for biofilm reduction |
| WO2022200429A1 (en) | 2021-03-24 | 2022-09-29 | Meko Manufacturing E.K. | Composite material comprising a silver infiltration as an antibacterial matrix material especially for biofilm reduction |
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