CN109014225B - Reactor for spherical metal powder preparation device and spherical metal powder preparation device - Google Patents
Reactor for spherical metal powder preparation device and spherical metal powder preparation device Download PDFInfo
- Publication number
- CN109014225B CN109014225B CN201811207588.2A CN201811207588A CN109014225B CN 109014225 B CN109014225 B CN 109014225B CN 201811207588 A CN201811207588 A CN 201811207588A CN 109014225 B CN109014225 B CN 109014225B
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- Prior art keywords
- reaction chamber
- reactor
- metal powder
- spherical metal
- wall
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- 239000000843 powder Substances 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000011261 inert gas Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 239000011229 interlayer Substances 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000009689 gas atomisation Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—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
- B22F2009/0832—Handling of atomising fluid, e.g. heating, cooling, cleaning, recirculating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—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
- B22F2009/088—Fluid nozzles, e.g. angle, distance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—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
- B22F2009/0888—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 casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a reactor for a spherical metal powder preparation device, which comprises a reaction chamber, wherein a gas nozzle is arranged on the reaction chamber, a heat transfer mechanism is arranged on the outer wall of the reaction chamber, the heat transfer mechanism comprises a gas heating cavity and a cooling cavity, the gas heating cavity is contacted with the outer wall of the reaction chamber and communicated with the gas nozzle, and the cooling cavity is contacted with the gas heating cavity. The invention also discloses a spherical metal powder preparation device adopting the reactor. The invention has the advantages that the inert gas is heated by utilizing the heat of the reaction chamber, so that the air flow has a certain temperature when impacting the molten metal, the blocking phenomenon is avoided, and the material performance is improved; the temperature of the high-pressure inert gas for powder preparation is about-69 ℃, the cooling medium is generally room temperature, and the reactor is utilized to bidirectionally absorb heat from the wall of the reaction chamber and the cooling cavity, so that the cooling medium is cooled, the energy consumption is effectively reduced, and the cost is saved.
Description
Technical Field
The invention belongs to the technical field of preparation devices of spherical metal powder for additive manufacturing, and particularly relates to a reactor for a spherical metal powder preparation device and the spherical metal powder preparation device.
Background
The additive manufacturing technology, also called 3D printing technology, is a non-traditional processing technology, and is an advanced manufacturing technology integrating light collection, machine, electricity, computer, numerical control machine tool, new material and the like, which is raised in the field of global advanced manufacturing in recent 30 years.
Currently, powder materials used in the field of metal additive manufacturing are spherical metal powder, and the main preparation methods of the powder materials comprise a vacuum induction gas atomization process (VIGA), an electrode induction gas atomization process (EIGA), a plasma atomization Process (PA), a radio frequency plasma spheroidization Process (PS), an ultrasonic atomization process and the like. The common characteristic of the above methods is that small particle molten metal is formed in the reaction chamber, and then the small particle molten metal is rapidly cooled to form spherical powder. In the gas atomization technology, before the high-speed gas flow impacts the molten metal liquid, the gas flow is heated, so that the atomization process can be obviously improved, and the atomization success rate and the material property are improved. Currently, conventional powder manufacturing equipment heats gas by providing a separate gas heating device, such as an electric heating device. In addition, in the powder preparation process, high-temperature molten metal can impact the inner wall of the reaction chamber under the impact of air flow, so that the temperature of the reaction chamber is increased, cooling equipment is required to be arranged for cooling the reaction chamber in order to ensure normal powder preparation, the common cooling equipment is a water cooling device, and cooling water is generally at room temperature and is also required to be cooled when in use.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the existing pulverizing device needs to be provided with a gas heating device and a reaction chamber cooling device, so that the energy consumption is high and the cost is high.
The invention adopts the following technical scheme to solve the technical problems:
The reactor for the spherical metal powder preparation device comprises a reaction chamber, wherein a gas nozzle is arranged on the reaction chamber, a heat transfer mechanism is arranged on the outer wall of the reaction chamber, the heat transfer mechanism comprises a gas heating cavity and a cooling cavity, the gas heating cavity is in contact with the outer wall of the reaction chamber and is communicated with the gas nozzle, and the cooling cavity is in contact with the gas heating cavity.
Preferably, in the reactor for a spherical metal powder preparation device of the present invention, an inner interlayer communicating with a gas nozzle is provided on an outer wall of the reaction chamber, an outer interlayer is provided on a side surface of the inner interlayer facing away from the reaction chamber, the inner interlayer forms the gas heating chamber, and the outer interlayer forms the cooling chamber.
Preferably, in the reactor for a spherical metal powder production apparatus according to the present invention, first flow passages and second flow passages are alternately arranged on an outer wall of the reaction chamber, the first flow passages being in communication with the gas nozzle to constitute the gas heating chamber, and the second flow passages constituting the cooling chamber.
Preferably, in the reactor for a spherical metal powder production apparatus according to the present invention, the first flow channel and the second flow channel are both spiral and surround the reaction chamber.
Preferably, in the reactor for a spherical metal powder preparation device according to the present invention, an interlayer is provided on an outer wall of the reaction chamber, and the interlayer is divided into a plurality of first flow channels and a plurality of second flow channels by a partition plate.
Preferably, in the reactor for a spherical metal powder preparation device of the present invention, the outer wall of the reaction chamber is alternately provided with a first groove and a second groove, the outer wall of the reaction chamber is also covered with a cover plate, the first groove and the cover plate form the first flow channel, and the second groove and the cover plate form the second flow channel.
The invention also provides a preparation device of the spherical metal powder, which comprises a reactor, wherein the reactor is used for the preparation device of the spherical metal.
The invention has the technical advantages that:
According to the technical scheme, the gas heating cavity is introduced into the outer wall of the reaction chamber, and inert gas is heated by utilizing the heat of the wall body of the reaction chamber, so that the gas flow has a certain temperature when impacting molten metal, the blocking phenomenon is avoided, and the material performance is improved; the temperature of the high-pressure inert gas for powder preparation is about-69 ℃, the cooling medium is generally room temperature, and the reactor is utilized to bidirectionally absorb heat from the wall of the reaction chamber and the cooling cavity, so that the cooling medium is cooled, the energy consumption is effectively reduced, and the cost is saved.
Drawings
FIG. 1 is a sectional view of a reactor for a spherical metal powder production apparatus according to an embodiment of the present invention;
FIG. 2 is a sectional view of a reactor for a spherical metal powder production apparatus according to a second embodiment of the present invention;
FIG. 3 is a sectional view of a reactor for a spherical metal powder production apparatus according to a third embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical scheme of the present invention by those skilled in the art, the technical scheme of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the reactor for the spherical metal powder preparation device of the invention comprises a reaction chamber 1, wherein a gas nozzle 2 is arranged at the upper end of the reaction chamber 1, a heat transfer mechanism 3 is arranged on the outer wall of the reaction chamber 1, the heat transfer mechanism 3 comprises a gas heating cavity 31 and a water cooling cavity 32, and the gas heating cavity 31 is in contact with the outer wall of the reaction chamber 1 and is communicated with the gas nozzle 2; the water cooling chamber 32 is in contact with the gas heating chamber 31. During powder making, high-pressure inert gas flows into the gas nozzle through the gas heating cavity 31, and in the process, the high-pressure inert gas can absorb heat from the wall body of the reaction chamber 1 and the water cooling cavity 32 for preheating so as to impact the molten metal liquid to prepare spherical metal powder.
The structure of the reactor for a spherical metal powder production apparatus will be described below by way of specific examples.
Example 1
Referring to fig. 1, an inner layer is disposed on the outer wall of the reaction chamber 1, and is in communication with the gas nozzle 2 to form the gas heating chamber 31; the side of the inner layer facing away from the reaction chamber 1 is provided with an outer layer which forms the water-cooled chamber 32.
During pulverizing, normal-temperature cooling water is introduced into the outer interlayer, high-pressure inert gas flow is introduced into the inner interlayer, and in the process that the high-pressure inert gas flow flows into the gas nozzle 2 through the inner interlayer, heat exchange is carried out between the high-pressure inert gas flow and the wall body of the reaction chamber 1 and the outer interlayer, and heat is absorbed in a bidirectional manner so as to effectively heat the high-pressure inert gas flow, so that the high-pressure inert gas flow reaches a certain temperature and is sprayed out from the gas nozzle 2 to pulverize the powder.
Example two
Fig. 2 is a schematic cross-sectional view of a reactor for a spherical metal powder production apparatus according to the present embodiment, in which first flow passages and second flow passages are alternately arranged on the outer wall of the reaction chamber 1, the first flow passages being in communication with the gas nozzle 2 to constitute the gas heating chamber 31, and the second flow passages constituting the cooling chamber 32.
Specifically, an interlayer is disposed on the outer wall of the reaction chamber 1, and the interlayer is divided into a plurality of first flow channels and a plurality of second flow channels by a partition 33.
Preferably, the first flow channel and the second flow channel are both spiral and encircle the reaction chamber 1, so that the length of the gas heating cavity 31 can be prolonged, the gas flow and the wall of the reaction chamber 1 can realize heat exchange more fully, and the heating effect of the high-pressure inert gas flow is further improved.
Example III
Fig. 3 is a cross-sectional view of a reactor for a spherical metal powder production apparatus according to the present embodiment, which differs from the second embodiment in the manner in which the first flow channel and the second flow channel are formed, and is realized by the following structure: the outer wall of the reaction chamber 1 is alternately provided with a first groove and a second groove, the outer wall of the reaction chamber 1 is also covered with a cover plate 34, the first channel is formed between the first groove and the cover plate 34, and the second channel is formed between the second groove and the cover plate 34.
Example IV
The embodiment provides a spherical metal powder preparation device, which comprises a reactor, wherein the reactor is any one of the first to third embodiments. The spherical metal powder preparation device comprises vacuum induction gas atomization powder preparation equipment, electrode induction gas atomization powder preparation equipment, plasma atomization powder preparation equipment, radio frequency plasma spheroidization powder preparation equipment, ultrasonic atomization powder preparation equipment and the like.
The technical scheme of the invention is described above by way of example with reference to the accompanying drawings, and it is apparent that the specific implementation of the invention is not limited by the above manner, and it is within the scope of the invention if various insubstantial improvements of the method concept and technical scheme of the invention are adopted or the inventive concept and technical scheme are directly applied to other occasions without improvement.
Claims (6)
1. The reactor for the spherical metal powder preparation device comprises a reaction chamber, wherein a gas nozzle is arranged on the reaction chamber, and is characterized in that a heat transfer mechanism is arranged on the outer wall of the reaction chamber, the heat transfer mechanism comprises a gas heating cavity and a cooling cavity, the gas heating cavity is in contact with the outer wall of the reaction chamber and is communicated with the gas nozzle, and the cooling cavity is in contact with the gas heating cavity; during pulverizing, high-pressure inert gas flows into the gas nozzle through the gas heating cavity.
2. The reactor for spherical metal powder production apparatus according to claim 1, wherein an inner interlayer communicating with the gas nozzle is provided on an outer wall of the reaction chamber, an outer interlayer is provided on a side of the inner interlayer facing away from the reaction chamber, the inner interlayer constitutes the gas heating chamber, and the outer interlayer constitutes the cooling chamber.
3. The reactor for a spherical metal powder production apparatus according to claim 1, wherein first flow passages and second flow passages are alternately arranged on an outer wall of the reaction chamber, the first flow passages being in communication with the gas nozzle to constitute the gas heating chamber, the second flow passages constituting the cooling chamber.
4. The reactor for a spherical metal powder production apparatus according to claim 3, wherein the first flow path and the second flow path are each spiral and surround the reaction chamber.
5. The reactor for a spherical metal powder production apparatus according to claim 3 or 4, wherein the outer wall of the reaction chamber is alternately provided with a first groove and a second groove, the outer wall of the reaction chamber is further covered with a cover plate, the first groove and the cover plate form the first flow passage therebetween, and the second groove and the cover plate form the second flow passage therebetween.
6. A spherical metal powder production apparatus comprising a reactor, wherein the reactor is a reactor for a spherical metal powder production apparatus according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207588.2A CN109014225B (en) | 2018-10-17 | 2018-10-17 | Reactor for spherical metal powder preparation device and spherical metal powder preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207588.2A CN109014225B (en) | 2018-10-17 | 2018-10-17 | Reactor for spherical metal powder preparation device and spherical metal powder preparation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109014225A CN109014225A (en) | 2018-12-18 |
| CN109014225B true CN109014225B (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811207588.2A Active CN109014225B (en) | 2018-10-17 | 2018-10-17 | Reactor for spherical metal powder preparation device and spherical metal powder preparation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109014225B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20110049487A (en) * | 2009-11-05 | 2011-05-12 | 덕산하이메탈(주) | Apparatus for manufacturing the metal powder |
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| CN105855560A (en) * | 2016-05-27 | 2016-08-17 | 广州纳联材料科技有限公司 | Spherical metal powder and preparation method thereof |
| CN208913140U (en) * | 2018-10-17 | 2019-05-31 | 中国科学院高能物理研究所 | Globular metallic powder preparation facilities reactor and globular metallic powder preparation facilities |
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- 2018-10-17 CN CN201811207588.2A patent/CN109014225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110049487A (en) * | 2009-11-05 | 2011-05-12 | 덕산하이메탈(주) | Apparatus for manufacturing the metal powder |
| CN103846447A (en) * | 2012-12-06 | 2014-06-11 | 北京有色金属研究总院 | Gas atomization preparation method of fine spherical titanium or titanium alloy powder |
| CN103736435A (en) * | 2013-12-27 | 2014-04-23 | 中国神华能源股份有限公司 | Device and system for spheroidizing powder by using alternating-current plasmas |
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| CN109014225A (en) | 2018-12-18 |
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