CN111408718A - Multi-material powder supply and spreading device for powder bed melting and control method thereof - Google Patents
Multi-material powder supply and spreading device for powder bed melting and control method thereof Download PDFInfo
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- CN111408718A CN111408718A CN202010224899.0A CN202010224899A CN111408718A CN 111408718 A CN111408718 A CN 111408718A CN 202010224899 A CN202010224899 A CN 202010224899A CN 111408718 A CN111408718 A CN 111408718A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- 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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/58—Means for feeding of material, e.g. heads for changing the material composition, e.g. by mixing
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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
- 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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- 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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/53—Nozzles
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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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/57—Metering means
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B22F12/224—Driving means for motion along a direction within the plane of a layer
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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
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- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a multi-material powder supply and spreading device for powder bed melting and a control method, wherein a plurality of powder inlets are formed in the upper end of a main powder storage tank, an independent sub powder storage tank is installed at each powder inlet, the main powder storage tank is used for premixing the sub powder storage tanks, then a powder mixer in a powder mixing device is used for mixing premixed mixtures, the main powder storage tank and the powder mixing device are respectively used for premixing and fully mixing, the powder mixing device is used as a buffer section, the powder mixing and printing efficiency is improved, and meanwhile, printing materials with different mixing contents and types can be respectively added into the sub powder storage tanks; the printing moving frame is utilized to drive the powder spray head to spray powder, so that the manufacture of a functional gradient material with continuously changed components in any direction and a multi-component alloy/high-entropy alloy-based composite material is realized, the long powder mixing time is saved, the powder can be laid in real time, the processing is carried out in real time, the production period and the production cost are greatly reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to a powder bed additive manufacturing powder paving device, and particularly relates to a multi-material powder supplying and powder paving device for powder bed melting and a control method thereof.
Background
The Powder Bed Fusion (PBF-Powder Bed Fusion) additive manufacturing technology is an additive manufacturing technology that uses laser or electron beams as a heat source, selectively melts and forms laid Powder in a bin, and discretely accumulates to directly manufacture a three-dimensional data model with a complex structure into a solid part, and therefore, the additive manufacturing technology is widely used for manufacturing products in the fields of aerospace, weapon equipment and the like. However, at present, the PBF technology is mainly used for forming a material, and it is difficult to realize direct and efficient forming of materials such as continuous gradient materials, medium-entropy alloys, high-entropy alloys, and the like.
In order to solve the problems, the patent of the publication No. CN106378450A provides a device and a method suitable for laser selective melting additive manufacturing of multiple materials, two powder storage tanks of the device respectively convey two kinds of powder, the two kinds of powder are not mixed, the continuous gradient material is difficult to realize, the high-entropy alloy is directly formed, and when powder is laid, the powder cannot be quantitatively conveyed, and the powder is difficult to recover; patent publication No. CN108480630A proposes an apparatus and method for preparing gradient material based on selective laser melting technology, where the distribution of powder mixed in horizontal gradient proportion is difficult to be controlled precisely, and the change of longitudinal powder gradient is difficult to be realized, when the powder types are different, a specific powder storage device needs to be replaced, and direct forming of high-entropy alloy is also impossible.
Disclosure of Invention
The invention aims to provide a multi-material powder supply and spreading device for powder bed melting and a control method thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-material powder supply and spreading device for powder bed melting comprises a sub powder storage tank, a main powder storage tank, a powder mixing device and a powder spraying device, wherein a plurality of powder inlets are formed in the upper end of the main powder storage tank; the powder outlet at the lower end of the main powder storage tank is communicated with the feed inlet at the upper end of the powder mixing device, the powder mixing device comprises a powder mixing tank body and a powder mixer, the feed inlet communicated with the powder outlet is formed in the upper end of the powder mixing tank body, the powder mixer is arranged in the powder mixing tank body and used for mixing and stirring powder, the inner cavity of the powder mixing tank body is of a conical structure, and the discharge outlet of the powder mixing tank body is positioned at the conical bottom; the powder spraying device comprises a powder sprayer communicated with a discharge port of the powder mixing tank body, the powder sprayer is installed on the printing moving frame, and the printing moving frame drives the powder sprayer to move.
Furthermore, a first flow motor is arranged on the powder inlet, and an output driving head of the first flow motor is positioned in the powder inlet; and a powder outlet of the main powder storage tank is provided with a second flow motor.
Furthermore, the powder outlet of the main powder storage tank is communicated with the feed inlet at the upper end of the powder mixing device through a first powder conduit, and the first powder conduit is a straight pipe.
Furthermore, the discharge hole of the sub powder storage tank is of a straight pipe structure, and the discharge hole of the sub powder storage tank is connected with the powder inlet in an insertion mode.
Further, the powder mixer adopts a mechanical powder mixer or a pneumatic powder mixer.
Further, mix the discharge gate of the powder jar body and pass through second powder pipe intercommunication with the powder shower nozzle.
Further, an air pump is arranged at the discharge port.
Further, the XY-direction powder spreading frame comprises a transverse guide rail and a longitudinal guide rail, the powder spray head is fixed on the transverse guide rail, and the XY-direction powder spreading frame consisting of the transverse guide rail and the longitudinal guide rail is arranged at the upper end of the forming surface.
A multi-material powder supply and laying control method comprises the following steps:
step 1), respectively adding different types of mixed materials into a sub-powder storage tank according to the types of the mixed materials required by the materials to be formed;
step 2), adding the materials with the required mixing ratio into the main powder storage tank from the sub powder storage tank according to the forming gradient of the materials to be formed, premixing in the main powder storage tank, closing a powder inlet of the main powder storage tank after the premixing is finished, and sending the premixed mixed powder into a powder mixing device for powder mixing;
and 3) performing powder spraying and printing on the powder mixed in the powder mixing device by using a powder spraying device.
Furthermore, when powder spraying printing is carried out, a connecting channel between the main powder storage tank and the powder mixing device is closed, the powder of the sub powder storage tank is added into the main powder storage tank for premixing according to the next gradient of the material to be formed, and the premixed powder is added into the powder mixing device for mixing and printing after the previous gradient printing is finished.
Compared with the prior art, the invention has the following beneficial technical effects: comprises a sub powder storage tank, a main powder storage tank, a powder mixing device and a powder spraying device,
the invention relates to a multi-material powder supply and spreading device for powder bed melting, which is characterized in that a plurality of powder inlets are formed in the upper end of a main powder storage tank, an independent sub powder storage tank is installed at each powder inlet, the lower end of the main powder storage tank is communicated with a powder mixing device, the main powder storage tank is used for premixing the sub powder storage tanks, then a powder mixer in the powder mixing device is used for mixing the premixed mixture, the main powder storage tank and the powder mixing device are respectively used for premixing and fully mixing, the powder mixing device is used as a buffer section, the discharging of the sub powder storage tanks can be premixed and stored, the powder mixing and printing efficiency is improved, and meanwhile, printing materials with different mixing contents and types can be respectively added into the sub powder storage tanks; the printing moving frame is utilized to drive the powder spray head to spray powder, so that the manufacture of a functional gradient material with continuously changed components in any direction and a multi-component alloy/high-entropy alloy-based composite material is realized, the long powder mixing time is saved, the powder can be laid in real time, the processing is carried out in real time, the production period and the production cost are greatly reduced, and the production efficiency is improved.
Furthermore, a first flow motor is arranged on the powder inlet, and an output driving head of the first flow motor is positioned in the powder inlet; the powder outlet of the main powder storage tank is provided with a second flow motor, so that the material mixing accuracy is improved, and the control is facilitated.
Furthermore, the powder outlet of the main powder storage tank is communicated with the feed inlet at the upper end of the powder mixing device through a first powder conduit, and the first powder conduit is a straight pipe, so that the falling speed of the mixed material is increased.
A multi-material powder supply and spreading control method utilizes a main powder storage tank to perform powder premixing, avoids direct communication between a powder mixing device and a sub powder storage tank, improves the efficiency of powder mixing and printing, can print by mixing powder in the powder mixing device for a short time, and reduces the powder mixing time. The multi-material powder supply device for powder bed melting additive manufacturing can realize additive manufacturing of a functional gradient material and a multi-component alloy/high-entropy alloy-based composite material with continuously-changed components in any direction, saves long powder mixing time, can lay powder in real time and process in real time, greatly reduces the production period and production cost, and improves the production efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of the structure of the sub powder storage tank of the present invention.
FIG. 3 is a schematic view of the main powder storage tank according to the present invention.
Fig. 4 is a schematic structural view of the powder mixing device.
Wherein, 1, a powder storage tank is arranged; 2. a main powder storage tank; 3. a powder mixing device; 4. a powder spraying device; 12. a valve; 22. a powder inlet; 23. a first flow motor; 24. a metering device; 25. a powder outlet; 26. a second flow motor; 27. a first powder conduit; 31. a powder mixing tank body; 32. a powder mixer; 33. a third flow motor; 34. a discharge port; 41. an air pump; 42. a second powder conduit; 43. a powder spray head; 44. a transverse guide rail; 45. a longitudinal guide rail.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 to 4, a multi-material powder supplying and spreading device for powder bed melting comprises a sub powder storage tank 1, a main powder storage tank 2, a powder mixing device 3 and a powder spraying device 4, wherein the upper end of the main powder storage tank 2 is provided with a plurality of powder inlets 22, a metering device 24 is arranged at each powder inlet 22, the inner cavity of the main powder storage tank 2 is of a conical structure, and a discharge hole of the sub powder storage tank 1 is connected with the powder inlets 22; the powder outlet 25 at the lower end of the main powder storage tank 2 is communicated with the feed inlet at the upper end of the powder mixing device 3, the powder mixing device 3 comprises a powder mixing tank body 31 and a powder mixer 32, the feed inlet communicated with the powder outlet 25 is formed in the upper end of the powder mixing tank body 31, the powder mixer 32 is arranged in the powder mixing tank body 31 and used for mixing powder, the inner cavity of the powder mixing tank body 31 is of a conical structure, and the discharge outlet 34 of the powder mixing tank body 31 is positioned at the bottom of the cone; the powder spraying device 4 comprises a powder spray head 43 connected to the discharge port 33 of the powder mixing tank body 31, the powder spray head 43 is installed on the printing moving frame, and the printing moving frame drives the powder spray head 43 to move.
The powder inlet 22 is provided with a first flow motor 23, and an output driving head of the first flow motor 23 is positioned in the powder inlet 22 and is used for driving the powder in the main powder storage tank 2 to enter the powder mixing device 3 so as to prevent the powder from accumulating in the powder inlet 22. The powder outlet 25 of the main powder storage tank 2 is provided with a second flow motor 26.
The powder outlet 25 of the main powder storage tank 2 is communicated with the feed inlet at the upper end of the powder mixing device 3 through a first powder conduit 27, and the first powder conduit 27 is a straight pipe, so that powder is prevented from being accumulated or reserved in the first powder conduit 27.
The discharge port of the sub powder storage tank 1 is of a straight pipe structure, the discharge port of the sub powder storage tank 1 is in plug-in connection with the powder inlet 22, so that powder can smoothly enter the main powder storage tank 2, and the discharge port of the sub powder storage tank 1 is provided with a valve 12 for controlling the powder of the sub powder storage tank 1 to flow out. The sub powder storage tank 1 is of a transparent structure, so that the residual amount of powder in the sub powder storage tank 1 can be observed conveniently. The sub-tanks 1 are used to store different powders, which may be any material that meets the respective additive manufacturing criteria.
The powder mixer 32 is a mechanical powder mixer or a pneumatic powder mixer.
The discharge port 34 of the powder mixing tank 31 is communicated with the powder nozzle 43 through a second powder conduit 42, and an air pump 41 is arranged at the discharge port 34 and used for bursting out the mixed powder in the powder mixing tank 31.
The printing moving frame is arranged on the XY-direction powder spreading frame, and the powder spray head 43 is driven to move along the XY direction by the XY-direction powder spreading frame; the XY-direction powder laying frame comprises a transverse guide rail 44 and a longitudinal guide rail 45, the powder spray head 43 is fixed on the transverse guide rail 44, and the XY-direction powder laying frame consisting of the transverse guide rail 44 and the longitudinal guide rail 45 is arranged at the upper end of the forming surface. The powder nozzle 43 moves linearly in the transverse direction along a guide rail, and the transverse guide rail is mounted on a longitudinal guide rail and can move linearly in the longitudinal direction under the driving of a motor.
The powder paving method by adopting the multi-material powder supplying and powder paving device comprises the following steps:
step 1), according to the types of materials to be formed and required to be mixed, adding different types of mixed materials into the powder storage tank 1 respectively to ensure the sufficient amount of single materials in the powder storage tank 1;
step 2), adding the materials with the required mixing ratio into the main powder storage tank 2 from the sub powder storage tank 1 according to the forming gradient of the materials to be formed, premixing in the main powder storage tank 2, closing the powder inlet 22 of the main powder storage tank 2 after the premixing is finished, and sending the premixed mixed powder into the powder mixing device 3 for powder mixing;
and 3) performing powder spraying and printing on the powder mixed in the powder mixing device 3 by using a powder spraying device 4. When carrying out powder spraying and printing, close the connecting passageway between main powder storage tank 2 and the powder mixing device 3, according to waiting to take shape the next gradient of material and add the powder of sub-powder storage tank 1 to main powder storage tank 2 in proportion and premix, wait to add the powder that mixes after the last gradient is printed and mix the printing after mixing powder mixing device 3, utilize main powder storage tank 2 to carry out the powder and premix, only need short time mix powder at powder mixing device 3 and can print, reduce and mix the powder time, avoid mixing powder device 3 and sub-powder storage tank 1 direct intercommunication, utilize powder mixing device 3 as the buffer segment, can carry out the preliminary mixing storage to sub-powder storage tank 1 unloading, the efficiency of powder mixing printing has been improved. The multi-material powder supply device for powder bed melting additive manufacturing can realize additive manufacturing of a functional gradient material and a multi-component alloy/high-entropy alloy-based composite material with continuously-changed components in any direction, saves long powder mixing time, can lay powder in real time and process in real time, greatly reduces the production period and production cost, and improves the production efficiency.
Example 1: the tungsten (W) particle reinforced CoCrFeMnNi selective laser melting additive manufacturing and forming method adopting the device comprises the following steps:
the first step is as follows: sufficient Co, Cr, Fe, Mn, Ni and W powder is respectively filled in the 6 sub powder storage tanks 1 and is respectively arranged on the main powder storage tank 2, and the valves 12 of the sub powder storage tanks 1 are opened;
the second step is that: the powder inlet 22 is opened through the first flow motor 23 of the main powder storage tank 2, the powder in the sub powder storage tank 1 flows into the main powder storage tank 2 according to a set proportion, and the weight ratio of six kinds of powder is Co: cr: fe: mn: ni: w19.3: 17.8: 18.9: 17.4: 17.4: 9.1;
the third step: turning off the first flow motor 23, turning on the second flow motor 26, enabling the premixed powder in the main powder storage tank 2 to flow into the powder mixing tank 31, stirring and mixing through the powder mixer 32, and turning off the second motor 25 after the charging is finished;
the fourth step: the third flow motor 33 is turned on, and the powder in the powder mixing tank 31 enters the powder nozzle 43 through the second powder conduit 42;
the fifth step: the powder spray head 43 moves towards the powder spreading frame along XY direction and finishes one-time powder feeding, and the laser starts to process the powder spread area of the current layer;
and a sixth step: and (4) descending the printing platform by one layer thickness, and repeating the steps until all the layers are printed.
Example 2: the Mo-Cu continuous gradient material selective electron beam forming method adopting the device comprises the following steps:
the first step is as follows: respectively filling Mo powder and Cu powder into the 2 sub powder storage tanks 1, respectively installing the two sub powder storage tanks on the main powder storage tank 2, and opening valves 12 of the sub powder storage tanks 1;
the second step is that: the powder inlet 22 is opened through the first flow motor 23 of the main powder storage tank 2, and the powder in the sub powder storage tank 1 flows into the main powder storage tank 2 according to a set proportion;
the third step: turning off the first flow motor 23, turning on the second flow motor 26, allowing the premixed powder in the main powder storage tank 2 to flow into the powder mixing tank 31 through the first powder guide pipe 41, stirring and mixing through the powder mixer 32, and turning off the second motor 25 after the charging is finished;
the fourth step: after the powder mixing is finished, the third flow motor 33 is opened, and the powder in the powder mixing tank 31 flows into the powder nozzle 5 through the second powder conduit 42; simultaneously, the second flow motor 26 is closed, and the first flow motor 23 is opened to carry out second gradient mixture premixing;
the fifth step: the powder spray head moves towards the powder spreading frame along XY direction, and the powder spreading distance and height are determined according to the gradient type;
and a sixth step: and after the powder is spread on one layer, the electron beam starts to process the powder spread area of the current layer, the platform descends one layer thickness after the printing of one layer is finished until the gradient finishes the printing, and the fourth step and the fifth step are repeated after the gradient finishes the printing, and the next gradient printing is finished until all layers finish the printing.
Claims (10)
1. The multi-material powder supply and spreading device for powder bed melting is characterized by comprising a sub powder storage tank (1), a main powder storage tank (2), a powder mixing device (3) and a powder spraying device (4), wherein a plurality of powder inlets (22) are formed in the upper end of the main powder storage tank (2), a metering device (24) is arranged at the powder inlets (22), the inner cavity of the main powder storage tank (2) is of a conical structure, and a discharge hole of the sub powder storage tank (1) is connected with the powder inlets (22); a powder outlet (25) at the lower end of the main powder storage tank (2) is communicated with a feed inlet at the upper end of the powder mixing device (3), the powder mixing device (3) comprises a powder mixing tank body (31) and a powder mixing device (32), the upper end of the powder mixing tank body (31) is provided with the feed inlet communicated with the powder outlet (25), the powder mixing device (32) is arranged in the powder mixing tank body (31) and used for stirring and mixing powder, the inner cavity of the powder mixing tank body (31) is of a conical structure, and a discharge outlet (34) of the powder mixing tank body (31) is positioned at the bottom of the cone; the powder spraying device (4) comprises a powder spray head (43) communicated with a discharge hole (33) of the powder mixing tank body (31), the powder spray head (43) is installed on a printing moving frame, and the printing moving frame drives the powder spray head (43) to move.
2. A multi-material powder supply and spreading device for powder bed melting according to claim 1, characterized in that a first flow motor (23) is provided on the powder inlet (22), the output driving head of the first flow motor (23) is located in the powder inlet (22); a powder outlet (25) of the main powder storage tank (2) is provided with a second flow motor (26).
3. A multi-material powder supplying and spreading device for powder bed melting according to claim 1, characterized in that the powder outlet (25) of the main powder storage tank (2) is communicated with the feeding port at the upper end of the powder mixing device (3) through a first powder conduit (27), and the first powder conduit (27) is a straight pipe.
4. The multi-material powder supply and spreading device for powder bed melting of claim 1, wherein the discharge port of the sub powder storage tank (1) is of a straight pipe structure, and the discharge port of the sub powder storage tank (1) is in plug-in connection with the powder inlet (22).
5. A multi-material powder supply and spreading device for powder bed melting according to claim 1, characterized in that the powder mixer (32) is a mechanical or pneumatic powder mixer.
6. A multi-material powder supply and spreading device for powder bed melting according to claim 1, wherein the discharge port (34) of the powder mixing tank (31) is in communication with the powder nozzle (43) through a second powder conduit (42).
7. A multi-material powder supplying and spreading device for powder bed melting according to claim 6, characterized in that an air pump (41) is provided at the discharge port (34).
8. A multi-material powder supplying and spreading device for powder bed melting according to claim 1, characterized in that the XY-directional powder spreading frame comprises a transverse rail (44) and a longitudinal rail (45), the powder spraying head (43) is fixed on the transverse rail (44), and the XY-directional powder spreading frame consisting of the transverse rail (44) and the longitudinal rail (45) is arranged at the upper end of the forming surface.
9. A multi-material powder supply and powder spreading control method based on the multi-material powder supply and powder spreading device of claim 1, characterized by comprising the following steps:
step 1), respectively adding different types of mixed materials into a sub-powder storage tank according to the types of the mixed materials required by the materials to be formed;
step 2), adding the materials with the required mixing ratio into the main powder storage tank from the sub powder storage tank according to the forming gradient of the materials to be formed, premixing in the main powder storage tank, closing a powder inlet of the main powder storage tank after the premixing is finished, and sending the premixed mixed powder into a powder mixing device for powder mixing;
and 3) performing powder spraying and printing on the powder mixed in the powder mixing device by using a powder spraying device.
10. A multi-material powder supply and spreading control method according to claim 9, wherein while performing powder spraying printing, a connecting passage between the main powder storage tank and the powder mixing device is closed, the powder of the sub powder storage tanks is proportionally added into the main powder storage tank according to the next gradient of the material to be formed for premixing, and after the previous gradient printing is completed, the premixed powder is added into the powder mixing device for mixing and printing.
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Cited By (8)
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| CN111957964A (en) * | 2020-08-21 | 2020-11-20 | 北京隆源自动成型系统有限公司 | Variable gradient powder supply device for SLM gradient metal printing |
| CN112589089A (en) * | 2020-10-26 | 2021-04-02 | 四川大学 | Device and method for preparing spherical powder based on laser-coaxial powder feeding coupling high throughput |
| CN112893878A (en) * | 2021-01-18 | 2021-06-04 | 韶关学院 | Gradient material powder mixing device and method thereof |
| CN113459508A (en) * | 2021-07-08 | 2021-10-01 | 杭州电子科技大学 | Multichannel converging type biological printing nozzle |
| CN113976921A (en) * | 2021-09-28 | 2022-01-28 | 北京科技大学 | Multidimensional continuous gradient material preparation device and method based on powder bed additive manufacturing |
| CN114309666A (en) * | 2022-01-07 | 2022-04-12 | 桂林理工大学 | Electron beam 3D prints two powder feeding mechanism based on preparation of gradient functional material |
| CN115415553A (en) * | 2022-09-16 | 2022-12-02 | 北京科技大学 | Three-dimensional multi-material gradient powder layer laying device and method |
| CN116372194A (en) * | 2023-05-29 | 2023-07-04 | 成都先进金属材料产业技术研究院股份有限公司 | Device and method suitable for high-flux manufacturing of metal material |
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| CN112589089A (en) * | 2020-10-26 | 2021-04-02 | 四川大学 | Device and method for preparing spherical powder based on laser-coaxial powder feeding coupling high throughput |
| CN112893878A (en) * | 2021-01-18 | 2021-06-04 | 韶关学院 | Gradient material powder mixing device and method thereof |
| CN112893878B (en) * | 2021-01-18 | 2022-11-29 | 韶关学院 | Gradient material powder mixing device and method thereof |
| CN113459508A (en) * | 2021-07-08 | 2021-10-01 | 杭州电子科技大学 | Multichannel converging type biological printing nozzle |
| CN113459508B (en) * | 2021-07-08 | 2023-03-10 | 杭州电子科技大学 | Multichannel converging type biological printing nozzle |
| CN113976921A (en) * | 2021-09-28 | 2022-01-28 | 北京科技大学 | Multidimensional continuous gradient material preparation device and method based on powder bed additive manufacturing |
| CN114309666A (en) * | 2022-01-07 | 2022-04-12 | 桂林理工大学 | Electron beam 3D prints two powder feeding mechanism based on preparation of gradient functional material |
| CN114309666B (en) * | 2022-01-07 | 2024-01-26 | 桂林理工大学 | Electron beam 3D printing double-powder feeding mechanism based on gradient functional material preparation |
| CN115415553A (en) * | 2022-09-16 | 2022-12-02 | 北京科技大学 | Three-dimensional multi-material gradient powder layer laying device and method |
| CN116372194A (en) * | 2023-05-29 | 2023-07-04 | 成都先进金属材料产业技术研究院股份有限公司 | Device and method suitable for high-flux manufacturing of metal material |
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