CN114042924A - Powder making cooling device and method - Google Patents
Powder making cooling device and method Download PDFInfo
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- CN114042924A CN114042924A CN202111625002.6A CN202111625002A CN114042924A CN 114042924 A CN114042924 A CN 114042924A CN 202111625002 A CN202111625002 A CN 202111625002A CN 114042924 A CN114042924 A CN 114042924A
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- 239000000843 powder Substances 0.000 title claims abstract description 231
- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 claims abstract description 116
- 239000002184 metal Substances 0.000 claims abstract description 116
- 238000010298 pulverizing process Methods 0.000 claims abstract description 68
- 238000003801 milling Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 87
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 230000005484 gravity Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—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
- B22F2009/0844—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 in controlled atmosphere
-
- 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
- B22F2009/086—Cooling after atomisation
- B22F2009/0876—Cooling after atomisation by gas
-
- 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
- B22F2009/0892—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 nozzle; controlling metal stream in or after the casting nozzle
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The disclosed embodiment relates to a powder making cooling device. This powder process cooling device includes: a milling chamber; the inert atmosphere unit is communicated with the pulverizing chamber; and each nozzle is arranged on the inner wall of the pulverizing chamber and communicated with the inert atmosphere unit, and each nozzle is used for spraying inert protective gas into the pulverizing chamber. This disclosed embodiment can form the opposite impact cooling air current to the liquid drop that leaves the metal bar through the inert shielding gas of a plurality of nozzle departments spun, form metal powder to further cool off metal powder, greatly slow down metal powder flying speed, the time that metal powder reachs powder process cavity inner wall has been strengthened metal powder simultaneously and in the ascending heat exchange of each flight direction, the metal powder that prevents not complete solidification bonds on powder process cavity inner wall.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of metal alloys, in particular to a powder making cooling device and method.
Background
The plasma rotating electrode technology is an important technical means for preparing high-quality metal powder, and the basic principle is that a plasma gun melts the front end of a bar rotating at a high speed into a liquid film, the liquid film is thrown out of a liquid line under the action of centrifugal force, and the liquid line forms small droplets. The liquid drops are spherical under the action of surface tension and are solidified into powder in the flying process, but the powder is mutually bonded in the small-diameter powder making chamber because the powder is not cooled enough to form satellite powder or is bonded to the inner wall of the powder making chamber to form blocky powder.
Among the correlation technique, one is that increase powder process cavity diameter, guarantee that the powder has sufficient cooling time at the flight in-process, nevertheless to being stained with wall powder like titanium alloy class powder easily, powder process cavity diameter need design 3~5m, and this diameter powder process cavity greatly increases processing cost, and increase area has increased the maintenance cost of clearing the stove in the use simultaneously. The other is to replace high-temperature gas in the powder making cavity quickly to reduce the gas temperature in the powder making cavity and enhance the cooling of powder on a flight path; or the powder is cooled in the process of falling into the powder barrel, so that the powder is prevented from being bonded in the powder barrel, but the inner wall of the powder making chamber still has caking powder.
With regard to the above technical solutions, the inventors have found that at least some of the following technical problems exist: for example, the processing of a very large milling chamber is easy to increase the cost and the occupied area; the cooling is not thorough enough, and the inner wall of the powder making chamber forms a sticky wall.
Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.
It is noted that this section is intended to provide a background or context to the disclosure as recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
Disclosure of Invention
It is an object of embodiments of the present disclosure to provide a powdering cooling device and method, which overcome, at least to some extent, one or more of the problems due to limitations and disadvantages of the related art.
According to a first aspect of embodiments of the present disclosure, there is provided a powdering cooling device, comprising:
a milling chamber;
the inert atmosphere unit is communicated with the pulverizing chamber;
the nozzles are used for spraying inert protective gas into the powder making chamber and can form opposite impact air flow for liquid drops leaving from the metal bar, and after the liquid drops are cooled in the opposite impact air flow to form metal powder, the metal powder is further cooled in the inert protective gas, so that the incompletely solidified metal powder is prevented from being bonded on the inner wall of the powder making chamber.
In an embodiment of the present disclosure, an angle of each nozzle is adjustable along a radial left-right direction of the pulverizing chamber, and an angle adjusting range of the nozzle is 0 to 45 °.
In an embodiment of the present disclosure, when the injection ranges of the plurality of nozzles overlap, a closed annular surface is formed, an area inside the closed annular surface is in a complete injection zone, the complete injection zone is used for cooling the metal powder, and an area outside the closed annular surface is in a non-complete injection zone.
In an embodiment of the present disclosure, the apparatus further includes:
the flow meter is arranged at the nozzle and used for monitoring the flow of the gas sprayed out of the nozzle;
the controller is respectively connected with the flow rate meter and the nozzle, and the controller is used for adjusting the gas flow at the nozzle according to the gas flow condition monitored by the flow rate meter.
In an embodiment of the present disclosure, the apparatus further includes:
receive the powder unit, receive the powder unit with the powder process cavity is through arranging the powder pipe intercommunication.
In an embodiment of the present disclosure, the apparatus further includes:
a butterfly valve, the butterfly valve comprising:
a valve body;
the valve plate is hollow, the valve plate can be rotatably arranged on the inner wall of the valve body, one surface of the valve plate is provided with a plurality of meshes, and the meshes face to the center of the pulverizing chamber;
the vent valve pipe is arranged on the valve plate, is communicated with the inert atmosphere unit, is used for providing inert protective gas for the valve plate which is hollow inside, and is used for driving the valve plate to rotate;
the regulating valve is arranged on the valve plate and used for regulating the opening or closing of the butterfly valve;
wherein, the butterfly valve sets up on row powder pipe.
In an embodiment of the present disclosure, the butterfly valve further includes: and the vent valve pipe is also provided with a gas valve which is used for adjusting the communication or non-communication between the valve plate and the inert atmosphere unit.
In an embodiment of the present disclosure, the apparatus further includes:
and the gas emitting valve is used for discharging the excessive inert protective gas in the powder making chamber.
According to a second aspect of embodiments of the present disclosure, there is provided a powdering cooling method, the method comprising:
during milling, inert protective gas sprayed by the nozzles is used for forming opposite impact air flow for liquid drops leaving from the metal bar, the liquid drops are cooled in the opposite impact air flow to form metal powder, and the metal powder is further cooled in the inert protective gas to prevent the incompletely solidified metal powder from being bonded on the inner wall of the milling chamber;
after the powder process, through adjusting the butterfly valve the gas valve makes inert protective gas follow the mesh blowout of valve plate upper surface is to being located the bottom in the system powder cavity metal powder further cools off, and through adjusting the governing valve will finally cool off the back metal powder passes through receive the powder unit and collect.
In an embodiment of the present disclosure, the method further includes: the angle of the nozzle is adjusted in a range of 0-45 degrees along the radial direction of the pulverizing chamber, and the opposite-impact air flow speed at the nozzle is 10-50 m/s.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, by the powder-making cooling device and the method, on one hand, in the powder-making process, the inert protective gas sprayed from the nozzles forms opposite-impact cooling airflow for liquid drops leaving the metal bar to form metal powder, and further cools the metal powder, so that the flying speed of the metal powder is greatly reduced, the time for the metal powder to reach the inner wall of the powder-making chamber is prolonged, and the heat exchange of the metal powder in each flying direction is enhanced; on the other hand, by cooling the metal powder by this method, adhesion of the metal powder that is not completely solidified to the inner wall of the powder making chamber can be reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
FIG. 1 shows a schematic diagram of a pulverizing and cooling device in an exemplary embodiment of the disclosure;
FIG. 2 illustrates a schematic diagram of a butterfly valve closed state in an exemplary embodiment of the disclosure;
FIG. 3 illustrates a schematic diagram of an open state of a butterfly valve in an exemplary embodiment of the disclosure;
FIG. 4 shows a schematic view of a closed annular face in an exemplary embodiment of the disclosure;
FIG. 5 is a schematic view of a maximum range of angular adjustment of a nozzle in accordance with an exemplary embodiment of the present disclosure;
FIG. 6 shows a flowchart of a pulverizing cooling method in an exemplary embodiment of the present disclosure.
In the figure: 100-a milling chamber; 110-inner wall of milling chamber; 200-an inert atmosphere unit; 300-a powder collecting unit; 400-a nozzle; 500-butterfly valve; 510-a valve body; 520-a valve plate; 521-mesh; 522-a vent valve tube; 530-adjusting valve; 600-a powder discharge pipe; 700-metal bar stock; 800-a flow meter; 900-vacuum unit; 1000-closed annular surface.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
First, an apparatus for cooling metal powder is provided in the present example embodiment. Referring to fig. 1, the apparatus may include: a milling chamber 100, an inert atmosphere unit 200 and a nozzle 400;
wherein the pulverizing chamber 100 is used to provide a chamber for preparing and cooling metal powder; an inert atmosphere unit 200, wherein the inert atmosphere unit 200 is communicated with the pulverizing chamber 100; the nozzles 400 are arranged on the inner wall of the milling chamber 100, each nozzle 400 is communicated with the inert atmosphere unit 200, each nozzle 400 is used for spraying inert protective gas into the milling chamber 100 to form a counter-current airflow for liquid drops leaving the metal bar 700, and after the liquid drops are cooled in the counter-current airflow to form metal powder, the metal powder is further cooled in the inert protective gas, so that the incompletely solidified metal powder is prevented from being bonded on the inner wall 110 of the milling chamber.
Through above-mentioned powder process cooling device, through the inert shielding gas of a plurality of nozzles 400 department blowout in the powder process, to leaving the liquid drop formation of metal bar 700 to dashing the cooling air current, make the liquid drop form metal powder, and further cool off metal powder, greatly slowed down metal powder flying speed, the time that metal powder reachd powder process cavity inner wall 110 has been prolonged, the heat exchange of metal powder on each flight direction has been strengthened simultaneously, prevent that the metal powder of not complete solidification from gluing the wall on powder process cavity inner wall 110.
Next, each part of the above-described pulverizing cooling device in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 5.
In one embodiment, the milling chamber 100 is used to provide a chamber for preparing and cooling metal powder.
In one embodiment, the apparatus further includes a vacuum unit 900, and the vacuum unit 900 is disposed in the pulverizing chamber 100 and used for extracting air from the pulverizing chamber 100 to prepare for introducing inert shielding gas into the pulverizing chamber 100.
In one embodiment, the inert atmosphere unit 200 is in communication with the milling chamber 100, the inert atmosphere unit 200 is used for providing inert shielding gas into the milling chamber 100, and the inert atmosphere unit 200 may be in a bottle shape or a tank shape, but the invention is not limited thereto.
In one embodiment, the nozzles 400 are uniformly arranged on the inner wall of the pulverizing chamber 100, each nozzle 400 is communicated with the inert atmosphere unit 200, each nozzle 400 is used for spraying inert shielding gas into the pulverizing chamber 100, the inert shielding gas sprayed by the plurality of nozzles 400 forms an opposite cooling airflow on a flight path of the metal powder, and forms an opposite cooling airflow on droplets leaving the metal bar 700, so that the droplets form the metal powder and further cool the metal powder, thereby greatly slowing down the flight speed of the metal powder, prolonging the time for the metal powder to reach the inner wall 110 of the pulverizing chamber, simultaneously enhancing the heat exchange of the metal powder in all directions, preventing the incompletely solidified metal powder from being bonded on the inner wall 110 of the pulverizing chamber, wherein the plurality of nozzles 400 can be arranged in the inner cavity of the pulverizing chamber 100, the nozzles 400 protrude on the inner wall of the pulverizing chamber 100 towards the center direction of the pulverizing chamber 100, or a plurality of nozzles 400 are disposed on a ring-shaped cavity, and the shape of the nozzles 400 may be circular, rectangular, etc. by disposing the ring-shaped cavity on the inner wall of the pulverizing chamber 100, for which the invention is not limited.
In one embodiment, the angle of each nozzle 400 is adjustable along the radial direction of the pulverization chamber 100, and the angle of the nozzle 400 is adjusted within a range of 0-45 °. Specifically, the angle of the nozzle 400 can be adjusted along the left and right sides in the radial direction of the pulverizing chamber 100, the angle adjusting range is 0-45 degrees, the direction of the ejected airflow can be adjusted by adjusting the angle of the nozzle 400, the opposite impact cooling effect of metal powder in all directions is realized to the utmost extent, and the metal powder which is not completely solidified is prevented from being bonded on the inner wall 110 of the pulverizing chamber.
In one embodiment, when the spray ranges of a plurality of the nozzles 400 overlap, a closed annular surface 1000 is formed, an area inside the closed annular surface 1000 is a complete spray area, the complete spray area is used for cooling the metal powder, and an area outside the closed annular surface 1000 is a non-complete spray area. Specifically, the area inside the closed annular surface 1000 is in a complete injection area, that is, the area between the closed annular surface 1000 and the metal bar 700 is in the complete injection area, the area outside the closed annular surface 1000 is in a non-complete injection area, that is, the area between the closed annular surface 1000 and the inner wall 110 of the milling chamber is the non-complete injection area, the metal powder in the complete injection area is subjected to injection cooling, and the metal powder in the non-complete injection area is subjected to injection cooling on part of the metal powder; the number of the nozzles 400 and the radius of the nozzles 400 are related to the radius of the powder making chamber 100, the linear velocity of the metal bar 700 and the particle size of the metal powder, when the jet flow influence areas of the nozzles 400 are just overlapped, a closed annular surface 1000 is just formed, and the speed of the metal powder flying to the closed annular surface 1000 is reduced to 0, so that the metal powder does not collide with the inner wall 110 of the powder making chamber, and meanwhile, the metal powder is sufficiently cooled, so that the metal powder which is not completely solidified cannot be generated on the inner wall 110 of the powder making chamber.
In one embodiment, the apparatus further comprises: the flow meter 800 is arranged at the nozzle 400, and is used for monitoring the flow of the gas sprayed out of the nozzle 400; the controller is respectively connected with the flow rate meter 800 and the nozzle 400, and the controller is used for adjusting the gas flow at the nozzle 400 according to the gas flow condition monitored by the flow rate meter 800. Specifically, the flow meter 800 is arranged at the nozzle 400, monitors the flow of the inert shielding gas sprayed from the nozzle 400, and sends the gas flow monitoring information to the controller, and the controller judges whether to adjust the gas flow at the nozzle 400 according to the received gas flow monitoring information, if the gas flow is too small, the metal powder is not sufficiently cooled, a wall is easily formed, and at this time, the nozzle 400 needs to be controlled to increase the gas flow; if the gas flow is too large, which affects the normal cooling of the metal powder, the nozzle 400 needs to be controlled to decrease the gas flow.
In one embodiment, the apparatus further comprises: and the powder collecting unit 300 is communicated with the powder preparing chamber 100 through a powder discharging pipe 600. Specifically, the cooled metal powder is collected by the powder collecting unit 300, the powder collecting unit 300 is detachably connected to the powder discharge pipe 600, after the previous powder collecting unit 300 is fully collected, the previous powder collecting unit 300 can be replaced by the next powder collecting unit 300 to continuously collect the powder, and the powder collecting unit 300 can be a powder collecting bottle, a powder collecting tank and the like, which is not limited in the present invention.
In one embodiment, the apparatus further comprises: a butterfly valve 500, the butterfly valve 500 comprising: valve body 510, valve plate 520, breather valve tube 522, regulator valve 530; wherein, the valve plate 520 is hollow inside, the valve plate 520 is rotatably arranged on the inner wall of the valve body 510, one surface of the valve plate 520 is provided with a plurality of mesh holes 521, and the mesh holes 521 face to the center of the pulverizing chamber 100; a vent valve pipe 522, the vent valve pipe 522 disposed on the valve plate 520, the vent valve pipe 522 communicating with the inert atmosphere unit 200 for providing inert shielding gas to the valve plate 520 which is hollow inside, and for driving the valve plate 520 to rotate; a regulating valve 530, wherein the regulating valve 530 is disposed on the valve plate 520 and is used for regulating the opening or closing of the butterfly valve 500; wherein, the butterfly valve 500 is arranged on the powder discharge pipe 600. Specifically, when the regulating valve 530 of the butterfly valve 500 is in a closed state, the inert shielding gas in the inert gas unit enters the valve plate 520 through the vent valve pipe 522, and is finally sprayed upwards through the meshes 521 on the valve plate 520, so as to further cool the metal powder to be collected at the bottom of the pulverizing chamber 100.
In one embodiment, a gas valve is further disposed on the vent valve tube 522 for regulating the communication or non-communication of the valve plate 520 with the inert atmosphere unit 200. Specifically, when the gas valve is opened, the inert atmosphere unit 200 is communicated with the valve plate 520, the inert protective gas enters the valve plate 520 through the vent valve pipe 522, and is finally upwards sprayed through the meshes 521 on the valve plate 520, so as to further cool the metal powder to be collected at the bottom of the powder making chamber 100; when the gas valve is closed, the inert atmosphere unit 200 is not communicated with the valve plate 520, at this time, the regulating valve 530 of the butterfly valve 500 is opened, and the cooled metal powder in the powder making chamber 100 is collected by the powder collecting unit 300.
In one embodiment, the apparatus further comprises: and the air release valve is used for discharging the excessive inert protective gas in the pulverizing chamber 100. Specifically, continuously spray inert protective gas in the powder process chamber 100, can lead to the atmospheric pressure in the powder process chamber 100 too big, and cause danger, consequently need discharge the excessive inert protective gas in the powder process chamber 100 for the pressure of powder process chamber 100 can not be too big, is fit for powder process and cooling powder. In this process, the pressure in the pulverizing chamber 100 is monitored and determined by a pressure sensor.
There is also provided in this example embodiment a method of cooling a meal, the method comprising the steps of:
step S101: during milling, inert shielding gas sprayed by the plurality of nozzles 400 forms a counter-current airflow for the liquid drops leaving the metal bar 700, and after the liquid drops are cooled in the counter-current airflow to form the metal powder, the metal powder is further cooled in the inert shielding gas, so that the incompletely solidified metal powder is prevented from being bonded on the inner wall 110 of the milling chamber;
step S102: after the powder process is finished, inert shielding gas is sprayed out from the meshes 521 on the upper surface of the valve plate 520 by adjusting the gas valve of the butterfly valve 500, the metal powder in the powder process chamber 100 at the bottom is further cooled, and the finally cooled metal powder is collected by the powder collecting unit 300 by adjusting the adjusting valve 530.
By the powder making cooling method, the inert protective gas sprayed from the nozzle 400 in the powder making process forms opposite-impact cooling airflow for the prepared metal powder, so that the flying speed of the metal powder is greatly reduced, the time for the metal powder to reach the inner wall 110 of the powder making chamber is prolonged, meanwhile, the heat exchange of the metal powder in each flying direction is enhanced, and the metal powder which is not completely solidified is prevented from being bonded on the inner wall 110 of the powder making chamber; after the powder process is finished simultaneously, blow the inert protective gas upwards from the bottom of powder process cavity 100 through butterfly valve 500, further cool off metal powder.
The steps of the above-described pulverizing and cooling method in the present exemplary embodiment will be described in more detail with reference to fig. 6.
In step S101, a plurality of nozzles 400 are disposed inside the pulverizing chamber 100, the nozzles 400 are communicated with the inert atmosphere unit 200, the nozzles 400 are used for spraying inert shielding gas into the pulverizing chamber 100, the inert shielding gas sprayed from the nozzles 400 forms opposite cooling airflow on the flight path of the metal powder, so that the flight speed of the metal powder is greatly reduced, the time for the metal powder to reach the inner wall 110 of the pulverizing chamber is prolonged, the heat exchange of the metal powder in all directions is enhanced, and the metal powder which is not completely solidified is prevented from being bonded on the inner wall 110 of the pulverizing chamber.
In step S102, after the milling is finished, when the adjusting valve 530 on the butterfly valve 500 is in a closed state, the inert shielding gas in the inert atmosphere unit 200 is introduced into the bottom of the milling chamber 100 through the valve plate 520 and the mesh 521, which are hollow inside, to further cool the metal powder in the milling chamber 100; when the regulating valve 530 on the butterfly valve 500 is in the open state after the cooling is finished, the cooled metal powder of the pulverizing chamber 100 is collected by the powder collecting unit 300.
In one embodiment, the method further comprises: the angle of the nozzle 400 is adjusted in a range of 0-45 degrees along the radial direction of the pulverizing chamber 100, and the opposite-blast air velocity at the nozzle 400 is 10-50 m/s. Specifically, the angle of the nozzle 400 can be adjusted along the left and right directions in the radial direction, the range of the adjusting angle in the left and right directions is 0-45 degrees, the direction of the ejected air flow can be adjusted by adjusting the angle of the nozzle 400, the opposite impact cooling effect of the metal powder in all directions is realized to the maximum extent, and the bonding of the metal powder which is not completely solidified on the inner wall 110 of the powder making chamber is reduced. When the spraying ranges of the plurality of nozzles 400 are overlapped, a closed annular surface 1000 is just formed, the area inside the closed annular surface 1000 is in a complete spraying area, namely the area between the closed annular surface 1000 and the metal bar stock 700 is in the complete spraying area, the complete spraying area is used for cooling the metal powder, the area outside the closed annular surface 1000 is in a non-complete spraying area, namely the area between the closed annular surface 1000 and the inner wall 110 of the milling chamber is in the non-complete spraying area, and the non-complete spraying area is used for spraying and cooling part of the metal powder.
It should be noted that, when there is no nozzle 400 in the pulverizing chamber 100, the calculation process of the movement of the metal powder in the pulverizing chamber 100 is as follows:
after the liquid drops leave the metal bar 700, the liquid drops are subjected to the action of gravity, buoyancy and gas resistance in the powder making chamber 100;
namely, it is
（1）
Wherein,
indicating gas after droplets leave metal bar 700The resistance force is generated by the resistance force,
indicating the gravity of the droplet after it leaves the metal bar 700,
indicating the gravity of the droplet after it leaves the metal bar 700,
which is indicative of the mass of the droplet,
indicating the acceleration of the droplet after it leaves the metal bar 700.
The gas resistance is:
（2）
wherein,
the cross-sectional area of the droplet is shown,
indicating the density of the gas in the milling chamber 100;
the difference in radial velocity of the droplets after leaving the metal bar 700 and the gas is:
wherein,
indicating the radial velocity of the droplet as it leaves the metal bar 700 from the center to the periphery,
represents the radial average gas flow velocity of the surrounding gas towards the center;
represents the difference in radial velocity of the droplets leaving the metal bar 700 and the gas;
drag coefficient
，
，
Indicating the viscosity of the gas in the milling chamber 100,
indicating the droplet diameter.
In the calculation process, the gas resistance is much larger than gravity and buoyancy, and the diameter of a common powder making cavity 100 is about 2-3 meters, so that the movement time of metal powder in the powder making cavity 100 is very short, the gravity and the buoyancy can be ignored, only the gas resistance effect is considered, the metal bar 700 rotates at high speed to drive the gas in the powder making cavity 100 to rotate, the radial speed of the metal powder reaching the inner wall 110 of the powder making cavity is not influenced, and the time of the gas reaching the inner wall of the cavity is not influenced.
Therefore, it is
（3）
Is finished to obtain
（4）
Is represented by the formula (3)
（5）
The velocity of the metal powder reaching the edge of the pulverizing chamber 100 is obtained from (4) and (5)
Time of arrival of the metal powder at the edge of the pulverizing chamber 100
。
When the nozzles 400 are densely arranged around the pulverizing chamber 100, the gas movement in the pulverizing chamber 100 is calculated according to the jet airflow from the periphery to the center, the jet influence area of the jet airflow emitted by the nozzles 400 is shown in fig. 4, and the average velocity of the radial gas in the pulverizing chamber 100 changes with the change of the radius of the pulverizing chamber 100. Gas mean velocity of the main body section in the pulverizing chamber 100
The following were used:
wherein,
the constant number is a constant number,
the initial velocity of the air stream as it exits the nozzle 400,
in order to be the radius of the nozzle 400,
is a distance from the nozzle 400 in the radial direction.
When in use
Then, the gas movement from the periphery to the center in the pulverizing chamber 100 is obtained according to the formula (4)
And further derived from (6)
. The time when the metal powder flies to the closed loop surface 1000 at this time is obtained according to the formula (5)
Wherein
indicating the radial distance that the gas flies to the boundary of the closed annular face 1000,
indicating the diameter of the pulverizing chamber 100.
Example of implementation
Preparation of TC4 powder
According to the length of 300mm of TC4 bar stock, the diameter of 50mm and the working speed of 40000rpm, the linear speed of the TC4 bar stock is about
The linear velocity of the liquid drop is consistent with that of the TC4 bar when the liquid drop leaves the TC4 bar
TC4 powder Density
Is 4.51g/cm 3100 diameter pulverizing chamber
Argon gas is filled inside, and the gas density
Is 1.63kg/m3Viscosity of
Is composed of
The radius of the circular nozzle 400 is 0.01m, which is opposite to the center, and the deflection angle is 0. At the beginningThe starting section is just defined by a closed annular surface 1000, the number of the nozzles 400 is 87, and the metal powder collecting device is arranged at the bottom of the pulverizing chamber 100, so that the nozzles 400 are not arranged at the position.
The velocity of the TC4 powder reaching the edge of the milling chamber 100 is obtained according to the formula (4)
。
The time of the TC4 powder reaching the edge of the milling chamber 100 is obtained according to the formula (5)
。
Therefore, the 250umTC4 powder will collide with the inner wall 110 of the milling chamber at a speed of 35m/s after flying for 0.21 s.
When the nozzles 400 are densely arranged around the pulverizing chamber 100, the gas jet is aerated from the periphery to the center, and the TC4 powder is sprayed on the powder
The radial velocity of the leaving bar to the closed annular surface 1000 is 0, which can be derived
The TC4 powder is completely solidified and the blowing speed at the nozzle 400 is set to
。
By adopting the process, the nozzles 400 inflate towards the center at the blowing speed of 34m/s before milling, when the bar stock with the diameter of 50mmTC4 begins to mill at 40000rpm, after milling is finished, only the butterfly valve 500 is opened to inflate. The time that whole process TC4 powder arrived closed toroidal surface 1000 is 0.33s, and radial velocity is 0, can not bump into the inner wall, and TC4 powder obtains fully cooling simultaneously, and powder process cavity inner wall 110 does not have the caking phenomenon, and TC4 powder finally falls into powder process cavity 100 bottom after the air current further cools off, closes butterfly valve 500 and aerifys, opens butterfly valve 500, and the TC4 powder after the cooling falls into and receives powder unit 300.
Example two
Preparation of Zr2.5Nb powder
According to the length of the Zr2.5Nb bar material being 300mm, the diameter being 50mm and the working speed being 35000rpm, the linear speed of the Zr2.5Nb bar material is about
Velocity of drop leaving Zr2.5Nb bar
Density of Zr2.5Nb powder
Is 5.89g/cm 3100 diameter pulverizing chamber
Argon gas is filled inside, and the gas density
Is 1.63kg/m3Viscosity of
Is composed of
The radius of the circular nozzle 400 is 0.01m, which is opposite to the center, and the deflection angle is 0. The closed annular surface 1000 formed just at the boundary of the initial section has 87 nozzles 400, and the zr2.5nb powder collecting device is arranged at the bottom of the pulverizing chamber 100, so that the nozzles 400 are not arranged at the position.
The speed of Zr2.5Nb powder reaching the edge of the milling chamber 100 is obtained according to the formula (4)
。
The time of the Zr2.5Nb powder reaching the edge of the milling chamber 100 is obtained according to the formula (5)
。
Therefore, after cooling for 0.18s, the 250umZr2.5Nb powder collides with the inner wall 110 of the pulverizing chamber at a speed of 32 m/s.
When the nozzles 400 are densely arranged around the pulverizing chamber 100, the Zr2.5Nb powder is formed after the gas flow is aerated from the periphery to the center
The speed is moved to a speed of 0 for the closed loop 1000, which can be determined as the time
The blowing speed at the nozzle 400 is
。
By adopting the process, the nozzles 400 are inflated at 32m/s before the powder is prepared, when the bar stock with the diameter of 50mmZr2.5Nb begins to prepare the powder at 35000rpm, after the powder preparation is finished, the butterfly valve 500 is only opened to inflate. The time for the Zr2.5Nb powder to reach the closed toroidal surface 1000 in the whole process is 0.23s, the speed is 0, the Zr2.5Nb powder cannot impact the inner wall, meanwhile, the Zr2.5Nb powder is fully cooled, the inner wall 110 of the powder preparation chamber does not have the phenomenon of caking, the Zr2.5Nb powder finally falls to the bottom of the powder preparation chamber 100 and is further cooled by airflow, the butterfly valve 500 is closed for inflation, the improved butterfly valve 500 is opened, and the cooled Zr2.5Nb powder falls into the powder collecting unit 300.
It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, merely for the convenience of describing the disclosed embodiments and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting of the disclosed embodiments.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present disclosure, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the embodiments of the present disclosure, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A powdering cooling device, comprising:
a milling chamber;
the inert atmosphere unit is communicated with the pulverizing chamber;
the powder preparing device comprises a powder preparing cavity, a plurality of nozzles and an inert atmosphere unit, wherein the powder preparing cavity is internally provided with an inert gas spraying cavity, the inert gas spraying cavity is internally provided with a plurality of inert gas spraying holes, and each nozzle is arranged on the inner wall of the powder preparing cavity and communicated with the inert atmosphere unit and is used for spraying inert protective gas into the powder preparing cavity.
2. The pulverizing and cooling apparatus of claim 1, wherein the angle of each nozzle is adjustable along the radial direction of the pulverizing chamber, and the angle of the nozzle is adjustable in the range of 0-45 °.
3. The pulverizing and cooling apparatus of claim 1, wherein the spray ranges of the plurality of nozzles overlap to form a closed annular surface, the area inside the closed annular surface is in a full spray zone, the full spray zone is used for cooling the metal powder, and the area outside the closed annular surface is in a non-full spray zone.
4. The pulverizing and cooling apparatus of claim 1, further comprising:
the flow meter is arranged at the nozzle and used for monitoring the flow of the gas sprayed out of the nozzle;
the controller is respectively connected with the flow rate meter and the nozzle, and the controller is used for adjusting the gas flow at the nozzle according to the gas flow condition monitored by the flow rate meter.
5. The pulverizing and cooling apparatus of claim 1, further comprising:
receive the powder unit, receive the powder unit with the powder process cavity is through arranging the powder pipe intercommunication.
6. The pulverizing and cooling apparatus of claim 5, further comprising:
a butterfly valve, the butterfly valve comprising:
a valve body;
the valve plate is hollow, the valve plate can be rotatably arranged on the inner wall of the valve body, one surface of the valve plate is provided with a plurality of meshes, and the meshes face to the center of the pulverizing chamber;
the vent valve pipe is arranged on the valve plate, is communicated with the inert atmosphere unit, is used for providing inert protective gas for the valve plate which is hollow inside, and is used for driving the valve plate to rotate;
the regulating valve is arranged on the valve plate and used for regulating the opening or closing of the butterfly valve;
wherein, the butterfly valve sets up on row powder pipe.
7. The pulverizing and cooling device of claim 6, wherein the vent valve tube is further provided with a gas valve for regulating the communication or non-communication between the valve plate and the inert atmosphere unit.
8. The pulverizing and cooling apparatus of claim 1, further comprising:
and the air release valve is used for discharging the excessive inert protective gas in the powder making chamber.
9. A cooling method for pulverizing, applied to the cooling apparatus for pulverizing as claimed in any one of claims 1-8, the method comprising:
during milling, inert protective gas sprayed by the nozzles is used for forming opposite impact air flow for liquid drops leaving from the metal bar, the liquid drops are cooled in the opposite impact air flow to form metal powder, and the metal powder is further cooled in the inert protective gas to prevent the incompletely solidified metal powder from being bonded on the inner wall of the milling chamber;
after the powder process, through adjusting the butterfly valve the gas valve makes inert protective gas follow the mesh blowout of valve plate upper surface is to being located the bottom in the system powder cavity metal powder further cools off, and through adjusting the governing valve will finally cool off the back metal powder passes through receive the powder unit and collect.
10. The method of claim 9 further comprising: the angle of the nozzle is adjusted in a range of 0-45 degrees along the radial direction of the pulverizing chamber, and the opposite-impact air flow speed at the nozzle is 10-50 m/s.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01205004A (en) * | 1988-02-10 | 1989-08-17 | Norsk Hydro As | Method and apparatus for producing metal powder |
| JP2013221214A (en) * | 2012-04-19 | 2013-10-28 | Toho Titanium Co Ltd | Powder producing device |
| CN105665730A (en) * | 2016-04-11 | 2016-06-15 | 西安赛隆金属材料有限责任公司 | Device and method for preparing spherical metal powder |
| CN106694896A (en) * | 2016-12-30 | 2017-05-24 | 西安交通大学青岛研究院 | Atomization preparation device for TiAl powder |
| CN107020384A (en) * | 2017-06-07 | 2017-08-08 | 西迪技术股份有限公司 | Fine grain spherical metal powder production equipment and method |
| CN109940167A (en) * | 2018-12-25 | 2019-06-28 | 西安赛隆金属材料有限责任公司 | A kind of rotation electrode fuel pulverizing plant and method |
| CN110666183A (en) * | 2019-11-19 | 2020-01-10 | 衡东县金源铝银粉有限公司 | Atomizing chamber for preparing firework aluminum powder |
| CN113059169A (en) * | 2021-03-18 | 2021-07-02 | 中国科学院力学研究所 | Device for producing high-temperature metal powder by adopting turntable centrifugal atomization method |
| CN113134618A (en) * | 2021-04-19 | 2021-07-20 | 山东理工大学 | Metal-based ceramic 3D printing composite powder plasma preparation device |
| CN113145854A (en) * | 2021-06-10 | 2021-07-23 | 江苏智仁景行新材料研究院有限公司 | Vacuum electrode induction melting double-flow gas atomization metal powder device |
-
2021
- 2021-12-28 CN CN202111625002.6A patent/CN114042924B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01205004A (en) * | 1988-02-10 | 1989-08-17 | Norsk Hydro As | Method and apparatus for producing metal powder |
| JP2013221214A (en) * | 2012-04-19 | 2013-10-28 | Toho Titanium Co Ltd | Powder producing device |
| CN105665730A (en) * | 2016-04-11 | 2016-06-15 | 西安赛隆金属材料有限责任公司 | Device and method for preparing spherical metal powder |
| CN106694896A (en) * | 2016-12-30 | 2017-05-24 | 西安交通大学青岛研究院 | Atomization preparation device for TiAl powder |
| CN107020384A (en) * | 2017-06-07 | 2017-08-08 | 西迪技术股份有限公司 | Fine grain spherical metal powder production equipment and method |
| CN109940167A (en) * | 2018-12-25 | 2019-06-28 | 西安赛隆金属材料有限责任公司 | A kind of rotation electrode fuel pulverizing plant and method |
| CN110666183A (en) * | 2019-11-19 | 2020-01-10 | 衡东县金源铝银粉有限公司 | Atomizing chamber for preparing firework aluminum powder |
| CN113059169A (en) * | 2021-03-18 | 2021-07-02 | 中国科学院力学研究所 | Device for producing high-temperature metal powder by adopting turntable centrifugal atomization method |
| CN113134618A (en) * | 2021-04-19 | 2021-07-20 | 山东理工大学 | Metal-based ceramic 3D printing composite powder plasma preparation device |
| CN113145854A (en) * | 2021-06-10 | 2021-07-23 | 江苏智仁景行新材料研究院有限公司 | Vacuum electrode induction melting double-flow gas atomization metal powder device |
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