CN109202077B - 3D printing method - Google Patents
3D printing method Download PDFInfo
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- CN109202077B CN109202077B CN201811007873.XA CN201811007873A CN109202077B CN 109202077 B CN109202077 B CN 109202077B CN 201811007873 A CN201811007873 A CN 201811007873A CN 109202077 B CN109202077 B CN 109202077B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- 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
- 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
- B22F10/36—Process control of energy beam parameters
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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
- B22F10/50—Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
- B22F12/17—Auxiliary heating means to heat the build chamber or platform
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
- B22F12/45—Two or more
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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
- B33Y10/00—Processes of additive manufacturing
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
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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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/226—Driving means for rotary motion
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- 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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Abstract
The invention discloses a 3D printing method, which comprises the following steps: step a: providing a liftable printing platform; step b: controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform; step c: controlling a first laser head to emit laser with a first preset energy value towards metal printing powder on a printing platform so as to melt the metal printing powder to form a printed object; step d: and controlling the second laser head to rotate around the printing object, and simultaneously controlling the second laser head to emit laser with a second preset energy value towards the edge of the printing object on the printing platform so as to eliminate particles at the edge of the printing object, wherein the wavelength of the laser corresponding to the first preset energy value is shorter than that of the laser corresponding to the second preset energy value. Through the mode, when one layer of the printed object is formed on the printing platform every time, the particles on the edge of the printed object of each layer are eliminated, so that the outer surface of the printed object is not rough, and the hand feeling is good.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printing method.
Background
3D printing is one of rapid prototyping technologies, and is a technology for manufacturing a product by using powder or curable materials and printing layer by layer based on a digital file, and is in sharp contrast to the subtractive manufacturing technology used in the conventional manufacturing industry, and 3D printing is an additive manufacturing technology for forming a final product by overlapping layers of materials.
At present, printed objects printed by a 3D printing method on the market have rough outer surfaces and even have granular points, so that the hand feeling of a person holding the objects is very poor.
Disclosure of Invention
The invention mainly solves the technical problem of providing a 3D printing method, and the method can eliminate the particles at the edge of each layer of the printed object when one layer of the printed object is formed on the printing powder of a printing platform every time, so that the outer surface of the printed object is not rough, and the user experience is greatly improved.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a 3D printing method including: step a: providing a liftable printing platform; step b: controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform; step c: controlling a first laser head to emit laser with a first preset energy value towards metal printing powder on a printing platform so as to melt the metal printing powder to form a printed object; step d: and controlling the second laser head to rotate around the printing object, and simultaneously controlling the second laser head to emit laser with a second preset energy value towards the edge of the printing object on the printing platform so as to eliminate particles at the edge of the printing object, wherein the wavelength of the laser corresponding to the first preset energy value is shorter than that of the laser corresponding to the second preset energy value.
Wherein, the 3D printing method further comprises: step e: controlling the printing platform to descend by a second preset distance value, and paving ceramic powder on the printing object paved on the printing platform, wherein the second preset distance value is smaller than the first preset distance value; step f: controlling the second laser head to emit laser with a third preset energy value towards the ceramic powder on the printing platform so as to melt the ceramic powder on the printing object, wherein the wavelength of the laser corresponding to the first preset energy value is shorter than that of the laser corresponding to the third preset energy value; step g: controlling a first laser head to emit laser with a first predetermined energy value toward a connection between metal printing powder and ceramic powder of a printing object on a printing platform to melt the ceramic powder and the metal printing powder with each other; and c, continuing to execute the step b.
Wherein, the metal printing powder comprises foaming agent powder, and the method also comprises the following steps: the printing object containing the metal printing powder, the foaming agent powder and the ceramic powder is heated to evaporate the foaming agent powder in the printing object.
Wherein, the metal printing powder includes that first metal prints powder and second metal and prints the powder, and print platform includes that first printing is regional and second prints the region, and wherein control print platform descends first predetermined distance value to the step of laying the metal printing powder on print platform includes: controlling a first printing area of the printing platform to descend by a first preset distance value, and controlling a second printing area of the printing platform to descend by a third preset distance value; the method comprises the steps of paving first metal printing powder on a first printing area of a printing platform, and paving second metal printing powder on a second printing area of the printing platform, wherein the first metal printing powder and the second metal printing powder are made of different materials, the particle diameters of the first metal printing powder and the second metal printing powder are different, and a third preset distance value and a first preset distance value are different.
Wherein, the step of controlling first laser head to launch the laser that has first predetermined energy value with melting metal printing powder to the metal printing powder on the print platform includes: controlling a first laser head to emit laser with a first preset energy value towards first metal printing powder on a first printing area of a printing platform so as to melt the first metal printing powder; and controlling the second laser head to emit laser with a fourth preset energy value towards the second metal printing powder on the second printing area of the printing platform so as to melt the second metal printing powder, wherein the wavelength of the laser corresponding to the first preset energy value is different from the wavelength of the laser corresponding to the fourth preset energy value.
Wherein the metal printing powder contains tungsten metal powder.
Wherein the metal printing powder contains antioxidant powder and active carbon powder.
The metal printing powder is copper alloy material powder, and the first laser head and the second laser head are provided with protective lenses for blocking laser reflection.
Wherein, the printing platform is provided with a heating substrate, and the printing object is arranged on the heating substrate, the method also comprises: after the printed object is molded, heating the heating substrate to heat the molded printed object on the printing platform; and carrying out sand blasting on the formed printed object.
Wherein, the last heating substrate that is provided with of print platform, the metal is printed the powder and is set up on heating substrate, and the metal is printed the powder and is bronze powder, and this method still includes: heating the heating substrate on the printing platform when the step of controlling the first laser head to emit laser with a first preset energy value to the metal printing powder on the printing platform is executed.
The invention has the beneficial effects that: different from the prior art, the 3D printing method disclosed by the present invention comprises: step a: providing a liftable printing platform; step b: controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform; step c: controlling a first laser head to emit laser with a first preset energy value towards metal printing powder on a printing platform so as to melt the metal printing powder to form a printed object; step d: and controlling the second laser head to rotate around the printing object, and simultaneously controlling the second laser head to emit laser with a second preset energy value towards the edge of the printing object on the printing platform so as to eliminate particles at the edge of the printing object, wherein the wavelength of the laser corresponding to the first preset energy value is shorter than that of the laser corresponding to the second preset energy value. Through the mode, the 3D printing method disclosed by the invention eliminates the particles at the edge of the printed object of each layer when the printed object is formed on the printing powder of the printing platform every time, so that the outer surface of the printed object is not rough, and the user experience is greatly improved.
Drawings
FIG. 1 is a schematic flow diagram of a 3D printing method of the present invention;
fig. 2 is a schematic partial structure diagram of an embodiment of the 3D printer according to the present invention.
Detailed Description
As shown in fig. 1, fig. 1 is a schematic flow chart of the 3D printing method of the present invention. The 3D printing method comprises the following steps:
step a: a liftable printing platform is provided.
Step b: and controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform.
It should be understood that the first predetermined distance value is a set value, and can be set on the printer according to actual needs.
Notably, as shown in fig. 2, in some embodiments, the metallic printing powder comprises a first metallic printing powder and a second metallic printing powder, and the printing platform comprises a first printing area 10 and a second printing area 11. Wherein control print platform descends first predetermined distance value to step b of spreading the metal printing powder on print platform includes:
step b 1: the first printing area 10 of the printing deck is controlled to drop by a first predetermined distance value and the second printing area 11 of the printing deck is controlled to drop by a third predetermined distance value. It should be understood that the third predetermined distance value is a set value, and can be set on the printer according to actual needs.
Step b 2: and paving first metal printing powder on a first printing area 10 of the printing platform, and paving second metal printing powder on a second printing area 11 of the printing platform.
It will be appreciated that by laying different metallic printing powders on the first printing area 10 and the second printing area 11, respectively, it is possible to print objects containing metallic materials of different nature.
Preferably, the first metal printing powder and the second metal printing powder are made of different materials, the particle diameters of the first metal printing powder and the second metal printing powder are different, and the third predetermined distance value is different from the first predetermined distance value. Preferably, the first metallic printing powder has a smaller diameter than the particle diameter of the second metallic printing powder, and the third predetermined distance value is larger than the first predetermined distance value.
Step c: the first laser head 12 is controlled to emit laser light having a first predetermined energy value toward the metallic printing powder on the printing platform to melt the metallic printing powder to form a printed object.
It is to be understood that a layer of the printed object is formed in step c.
It is noted that in some embodiments, step c of controlling first laser head 12 to emit laser light having a first predetermined energy value toward the metallic printing powder on the printing platform to melt the metallic printing powder comprises:
step c 1: the first laser head 12 is controlled to emit laser light having a first predetermined energy value toward the first metallic printing powder on the first printing area 10 of the printing platform to melt the first metallic printing powder.
Step c 2: and controlling the second laser head 13 to emit laser with a fourth predetermined energy value to melt the second metal printing powder on the second printing area 11 of the printing platform.
It will be appreciated that the melting of the first metallic printing powder by the first laser head 12 and the melting of the second metallic printing powder by the second laser head 13 enables the layer of printed object to have two different properties of metallic materials.
Further, the wavelength of the laser corresponding to the first predetermined energy value is different from the wavelength of the laser corresponding to the fourth predetermined energy value. Since the diameter of the first metal printing powder is smaller than the particle diameter of the second metal printing powder, and the third predetermined distance value is larger than the first predetermined distance value, the second laser head needs to emit laser with a larger energy value to completely melt the second metal printing powder in the second printing area 11, and the wavelength of the laser corresponding to the first predetermined energy value is longer than the wavelength of the laser corresponding to the fourth predetermined energy value.
Step d: the second laser head 13 is controlled to rotate around the printed object and at the same time the second laser head 13 is controlled to emit laser light having a second predetermined energy value towards the edge of the printed object on the printing platform to eliminate particles at the edge of the printed object.
It should be understood that the laser head of this embodiment includes a first laser head 12 and a second laser head 13, wherein the first laser head 12 and the second laser head 13 are rotatably disposed.
It should be noted that, because the first laser head 12 emits laser to the metal printing powder, the printed object is also metal, and when the metal printing powder is melted by laser, some particles appear at the edge of the printed object, which causes the edge of the printed object to be rough, so that the particles or impurities at the edge of the printed object are eliminated by the second laser head 13, which can make the surface of the edge of the printed object not rough, even smooth, and better in hand feeling. That is to say, this implementation can be to when forming one deck printed object on print platform each time, and the granule to the edge of the printed object of each deck is eliminated for the surface of the printed object after the shaping is not coarse, feels good.
In this embodiment, the particles need a laser with relatively small energy to be eliminated, so the wavelength of the laser corresponding to the first predetermined energy value is shorter than the wavelength of the laser corresponding to the second predetermined energy value.
Step e: and controlling the printing platform to descend by a second preset distance value, and paving the ceramic powder on the printing object on the printing platform. It should be understood that the second predetermined distance value is a set value, and can be set on the printer according to actual needs.
It will be appreciated that in step e the first print zone 10 and/or the second print zone 11 of the printing platform may be controlled to descend, while the second predetermined distance value is smaller than the first predetermined distance value. Preferably, the second predetermined distance value has a range of values of 10-15um (micrometers). And the first predetermined distance value has a range of values of 30-40 um.
Step f: the second laser head 13 is controlled to emit laser light having a third predetermined energy value toward the ceramic powder on the printing platform to melt the ceramic powder on the printing object.
It is understood that the present embodiment makes the weight of the printed object lighter by melting the ceramic powder on the printed object. Since the second predetermined distance value is smaller than the first predetermined distance value, printed objects of adjacent metal layers appear to be connected, and thus the formed printed objects are difficult to see with the ceramic powder layer. That is, the metal printing powder contains ceramic powder, so that the formed printing object has the characteristic of being hard and is light.
In this embodiment, the ceramic powder needs a laser with relatively low energy to melt, so the wavelength of the laser corresponding to the first predetermined energy value is shorter than the wavelength of the laser corresponding to the third predetermined energy value.
Step g: the first laser head 12 is controlled to emit laser light having a first predetermined energy value toward a junction between the metallic printing powder and the ceramic powder of the printing object on the printing platform to melt the ceramic powder and the metallic printing powder to each other.
It should be understood that the melting point of the ceramic powder is relatively low, so that the ceramic powder can be melted by the laser with relatively low energy, and the metal printing powder can be melted by the laser with relatively high energy, so that the second laser head 13 emits the laser with the third predetermined energy value toward the ceramic powder to melt the ceramic powder only, and the metal printing powder cannot be completely melted, so that in step g, the first laser head 12 emits the laser with the first predetermined energy value toward the joint between the metal printing powder and the ceramic powder to melt the ceramic powder and the metal printing powder completely, and the ceramic powder and the metal printing powder are melted and mixed to form a whole, so that the joint is more stable.
In addition, in some embodiments, after step g is performed, the 3D printing method further includes: the second laser head 13 is controlled to rotate around the printed object containing the metallic printing powder and the ceramic powder, and at the same time, the second laser head is controlled to emit laser light having a second predetermined energy value toward the edge of the printed object containing the metallic printing powder and the ceramic powder on the printing platform to eliminate particles at the edge of the printed object containing the metallic printing powder and the ceramic powder.
It should be understood that after step g is executed, step b is continuously executed, and the molded printing object can be printed out by sequentially circulating the operations.
It should be understood that the metal printing powder of the present embodiment includes the foaming agent powder, and therefore, after step g, the 3D printing method further includes: the printing object containing the metal printing powder, the foaming agent powder and the ceramic powder is heated to evaporate the foaming agent powder in the printing object. It should be understood that some of the foaming agent powder is already evaporated when the first laser head 12 emits the laser having the first predetermined energy value toward the metal printing powder on the printing platform to melt the metal printing powder, but the light is not completely evaporated, so that the printing object including the metal printing powder, the foaming agent powder and the ceramic powder needs to be heated again, so that the foaming agent powder can be evaporated again, so that the printing object becomes light in weight. In addition, it is noted that the foaming agent powder forming gas evaporates from the molded printed object during the heating evaporation, that is, the foaming agent powder forming gas can evaporate through the metal powder molded printed object.
In this embodiment, the metal printing powder contains tungsten metal powder, that is, the first metal printing powder and/or the second metal printing powder contains tungsten metal powder, so that the molded printed object has a characteristic of being hard.
Furthermore, in this embodiment, the metal printing powder contains antioxidant powder, that is, the first metal printing powder and/or the second metal printing powder contains antioxidant powder, so that the molded printed object has an antioxidant function, is not easy to rust, and has a long service life. Furthermore, since the printing powder itself has an odor, the printed object itself also has an odor, and therefore the metal printing powder of this embodiment further includes activated carbon powder, that is, the first metal printing powder and/or the second metal printing powder includes activated carbon powder, so that the formed printed object has an adsorption function, and has an odor removal function, so that the printed object does not have an odor.
In addition, in some embodiments, the metal printing powder is copper alloy material powder, and due to the high reflectivity and low energy absorption efficiency of the copper alloy material, the reflected laser may damage the optical device (including the first laser head and the second laser head), and therefore, in order to protect the optical device, the first laser head and the second laser head are preferably provided with protective lenses for blocking the reflection of the laser. Further, a heating substrate is arranged on the printing platform, and the printing object is arranged on the heating substrate, and the 3D method further includes: step h: after the printed object is molded, heating the heating substrate to heat the molded printed object on the printing platform; step i: and carrying out sand blasting on the formed printed object. It should be understood that the copper alloy molded printed object has a relatively serious powder adhesion phenomenon, and is heated by the heating substrate, the powder is preheated by the heating substrate, and the printed object is subjected to sand blasting, so that the surface of the printed object is smooth. Because when forming the one deck printing object at every turn on print platform's printing powder, eliminate the granule at the edge of the printing object of every deck for the surface of printing the object is not rough, and this implementation still further through carrying out the sandblast to the printing object, makes the surface of printing the object more smooth, holds to feel better.
In addition, in some embodiments, a heating substrate is disposed on the printing platform, and the metal printing powder is disposed on the heating substrate. Further, the metal printing powder is bronze powder, and the method further comprises the following steps: when executing the step of controlling the first laser head to emit laser with a first predetermined energy value towards the metal printing powder on the printing platform so as to melt the metal printing powder, the heating substrate on the printing platform is heated, so that the tin element of the bronze powder is not segregated in the printing process, and the service life is greatly prolonged. It should be understood that the bronze powder is heated during the printing process, so that the tin element of the bronze powder can be uniformly distributed, and the tin element of the bronze powder can not segregate during the printing process.
In summary, the 3D printing method disclosed by the present invention includes: step a: providing a liftable printing platform; step b: controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform; step c: controlling a first laser head to emit laser with a first preset energy value towards metal printing powder on a printing platform so as to melt the metal printing powder to form a printed object; step d: and controlling the second laser head to rotate around the printing object, and simultaneously controlling the second laser head to emit laser with a second preset energy value towards the edge of the printing object on the printing platform so as to eliminate particles at the edge of the printing object, wherein the wavelength of the laser corresponding to the first preset energy value is shorter than that of the laser corresponding to the second preset energy value. Through the mode, the 3D printing method disclosed by the invention eliminates the particles at the edge of the printed object of each layer when the printed object is formed on the printing powder of the printing platform every time, so that the outer surface of the printed object is not rough, and the user experience is greatly improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. A3D printing method, comprising:
step a: providing a liftable printing platform;
step b: controlling the printing platform to descend by a first preset distance value, and paving metal printing powder on the printing platform;
step c: controlling a first laser head to emit laser light having a first predetermined energy value toward the metallic printing powder on the printing platform to melt the metallic printing powder to form a printed object;
step d: controlling a second laser head to rotate around the printed object and simultaneously controlling the second laser head to emit laser with a second predetermined energy value towards the edge of the printed object on the printing platform so as to eliminate particles at the edge of the printed object, wherein the wavelength of the laser corresponding to the first predetermined energy value is shorter than that of the laser corresponding to the second predetermined energy value;
step e: controlling the printing platform to descend by a second preset distance value, and paving ceramic powder on the printing object on the printing platform, wherein the second preset distance value is smaller than the first preset distance value;
step f: controlling the second laser head to emit laser with a third predetermined energy value towards the ceramic powder on the printing platform so as to melt the ceramic powder on the printing object, wherein the wavelength of the laser corresponding to the first predetermined energy value is shorter than that of the laser corresponding to the third predetermined energy value;
step g: controlling the first laser head to emit laser light having a first predetermined energy value toward a junction between the metallic printing powder and the ceramic powder of the printing object on the printing platform to melt the ceramic powder and the metallic printing powder to each other;
continuing to execute the step b;
the metal printing powder comprises tungsten metal powder, antioxidant powder and activated carbon powder.
2. The 3D printing method according to claim 1, wherein the metal printing powder comprises a first metal printing powder and a second metal printing powder, the printing platform comprises a first printing area and a second printing area, and wherein the step of controlling the printing platform to descend by a first predetermined distance value and lay down the metal printing powder on the printing platform comprises:
controlling a first printing area of the printing platform to descend by the first preset distance value, and controlling a second printing area of the printing platform to descend by the third preset distance value;
the method comprises the steps of paving first metal printing powder on a first printing area of a printing platform, and paving second metal printing powder on a second printing area of the printing platform, wherein the first metal printing powder and the second metal printing powder are made of different materials, the particle diameters of the first metal printing powder and the second metal printing powder are different, and the third preset distance value and the first preset distance value are different.
3. The 3D printing method according to claim 2, wherein the step of controlling the first laser head to emit laser light having a first predetermined energy value toward the metal printing powder on the printing platform to melt the metal printing powder comprises:
controlling the first laser head to emit laser light having the first predetermined energy value toward the first metallic printing powder on a first printing region of the printing platform to melt the first metallic printing powder;
and controlling the second laser head to emit laser with a fourth preset energy value towards the second metal printing powder on a second printing area of the printing platform so as to melt the second metal printing powder, wherein the wavelength of the laser corresponding to the first preset energy value is different from the wavelength of the laser corresponding to the fourth preset energy value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007873.XA CN109202077B (en) | 2018-08-30 | 2018-08-30 | 3D printing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007873.XA CN109202077B (en) | 2018-08-30 | 2018-08-30 | 3D printing method |
Publications (2)
| Publication Number | Publication Date |
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| CN109202077A CN109202077A (en) | 2019-01-15 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998022253A1 (en) * | 1996-11-22 | 1998-05-28 | Rabinovich Joshua E | Rapid manufacturing system with laser fusion of feedstock |
| JP2002097532A (en) * | 2000-09-19 | 2002-04-02 | Kinzoku Giken Kk | Method for manufacturing composite molded article of metal and ceramics, and apparatus |
| CN1814380A (en) * | 2006-03-01 | 2006-08-09 | 苏州大学 | Laser spot coating-shaping process and coaxial spray head |
| CN101670432A (en) * | 2009-07-14 | 2010-03-17 | 黑龙江科技学院 | New method used for realizing powder melting and forming based on laser scanning |
| CN103978211A (en) * | 2014-05-23 | 2014-08-13 | 北京理工大学 | Powder laying and recovering device for selective laser melting of heterogeneous material |
| CN105538728A (en) * | 2016-02-23 | 2016-05-04 | 中国科学院重庆绿色智能技术研究院 | Laser material increasing and decreasing combined manufacturing method and device |
| CN106270491A (en) * | 2016-09-18 | 2017-01-04 | 广东工业大学 | A kind of cermet particles and preparation method and application |
| CN106346776A (en) * | 2016-09-13 | 2017-01-25 | 复旦大学 | Superposition printing structure and method for 3D printing products of homogeneous or heterogeneous materials |
| CN106794519A (en) * | 2014-10-14 | 2017-05-31 | 西门子能源有限公司 | The laser gain material manufacture of the three-dimensional part comprising multiple material of forming as one system |
-
2018
- 2018-08-30 CN CN201811007873.XA patent/CN109202077B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998022253A1 (en) * | 1996-11-22 | 1998-05-28 | Rabinovich Joshua E | Rapid manufacturing system with laser fusion of feedstock |
| JP2002097532A (en) * | 2000-09-19 | 2002-04-02 | Kinzoku Giken Kk | Method for manufacturing composite molded article of metal and ceramics, and apparatus |
| CN1814380A (en) * | 2006-03-01 | 2006-08-09 | 苏州大学 | Laser spot coating-shaping process and coaxial spray head |
| CN101670432A (en) * | 2009-07-14 | 2010-03-17 | 黑龙江科技学院 | New method used for realizing powder melting and forming based on laser scanning |
| CN103978211A (en) * | 2014-05-23 | 2014-08-13 | 北京理工大学 | Powder laying and recovering device for selective laser melting of heterogeneous material |
| CN106794519A (en) * | 2014-10-14 | 2017-05-31 | 西门子能源有限公司 | The laser gain material manufacture of the three-dimensional part comprising multiple material of forming as one system |
| CN105538728A (en) * | 2016-02-23 | 2016-05-04 | 中国科学院重庆绿色智能技术研究院 | Laser material increasing and decreasing combined manufacturing method and device |
| CN106346776A (en) * | 2016-09-13 | 2017-01-25 | 复旦大学 | Superposition printing structure and method for 3D printing products of homogeneous or heterogeneous materials |
| CN106270491A (en) * | 2016-09-18 | 2017-01-04 | 广东工业大学 | A kind of cermet particles and preparation method and application |
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