CN113751718A - Method and apparatus for promoting metal powder fining - Google Patents
Method and apparatus for promoting metal powder fining Download PDFInfo
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- CN113751718A CN113751718A CN202111122140.2A CN202111122140A CN113751718A CN 113751718 A CN113751718 A CN 113751718A CN 202111122140 A CN202111122140 A CN 202111122140A CN 113751718 A CN113751718 A CN 113751718A
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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
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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
- B22F2009/0824—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 with a specific atomising fluid
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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
- B22F2009/0824—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 with a specific atomising fluid
- B22F2009/0828—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 with a specific atomising fluid with water
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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
- B22F2009/0836—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 with electric or magnetic field or induction
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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
- B22F2009/088—Fluid nozzles, e.g. angle, distance
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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
- 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
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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
- B22F2009/0896—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 particle transport, separation: process and apparatus
Abstract
The invention discloses a method for promoting metal powder refining and a metal powder refining device, wherein the metal powder refining device comprises a direct current power supply, a reaction device, a pouring gate and a nozzle, the reaction device is provided with an accommodating cavity, the direct current power supply is electrically connected with the accommodating cavity of the reaction device, the bottom of the reaction device is provided with a through hole, the pouring gate is connected with the through hole, the nozzle is annular and arranged below the pouring gate, and the nozzle sprays high-pressure gas or liquid to break up molten metal flowing out of the pouring gate and obtain metal powder after solidification. The method of the metal powder refining device provided by the embodiment of the invention has the advantages of refining the metal powder and improving the yield.
Description
Technical Field
The invention relates to the field of metal powder preparation, in particular to a method and a device for promoting metal powder to be refined.
Background
Modern powder metallurgy products are developing towards high density, high strength and complex shape, and higher and tighter requirements are put on metal powder products and raw material metal powder thereof. The unidirectional pressing density of the pure iron powder produced by the water atomization method at present in China is 7.05-7.12 g-cm under 600MPa-3The properties and the range of applications of iron powders after pressing/sintering are greatly limited.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
the purity of the metal powder is affected to some extent by the influence of water, gas and impurities contained therein. Meanwhile, the particle size of 50% iron powder is 40 μm or more, for example, depending on the atomization speed. In order to obtain powders of smaller particle size, it is necessary to increase the atomization rate or to improve the production process.
To this end, embodiments of the present invention propose a method of promoting the refinement of metal powder.
The embodiment of the invention provides a refining device of metal powder
The method for promoting the refining of the metal powder comprises the following steps:
preparing molten metal according to requirements;
putting the prepared molten metal into a reaction device;
introducing direct current into the molten metal to enable the molten metal to have charges with the same attribute;
after the molten metal with the same attribute charges flows out of a pouring gate of the reaction device, the molten metal with the same attribute charges is scattered through a high-pressure medium sprayed out of a nozzle;
cooling the scattered molten metal and solidifying the molten metal;
the obtained metal powder after solidification is dried, filtered and sieved to obtain metal fine powder.
The method for promoting the refining of the metal powder has the advantages of refining the metal powder and improving the yield.
In some embodiments, passing a direct current into the molten metal to make charges with the same property in the molten metal comprises:
connecting the positive electrode of a direct current power supply with the molten metal to enable the molten metal to be positively charged;
or connecting the negative electrode of the direct current power supply with the molten metal to make the molten metal carry negative charges.
In some embodiments, the step of charging the molten metal with direct current to make the molten metal have charges with the same property further includes: and introducing continuously adjustable current with the current of 0A-150A and the power of 2kW-50kW into the molten metal.
According to the embodiment of the invention, the device for refining the metal powder comprises:
a direct current power supply;
the reaction device is provided with an accommodating cavity, the direct-current power supply is electrically connected with the accommodating cavity of the reaction device, and the bottom of the reaction device is provided with a through hole;
the pouring gate is arranged on the outer wall of the reaction device and is connected with the through hole;
and the nozzle is used for introducing a high-pressure medium, is annular and is arranged at the lower end of the pouring gate.
The method of the metal powder refining device provided by the embodiment of the invention has the advantages of refining the metal powder and improving the yield.
In some embodiments, an insulating layer is disposed in the receiving cavity of the reaction device.
In some embodiments, the dc power source is connected to the bottom wall of the receiving chamber of the reaction apparatus.
In some embodiments, the bottom end of the reaction apparatus is a cone.
In some embodiments, the power of the DC power source is continuously adjustable between 2kW and 50 kW.
In some embodiments, the current of the DC power supply is continuously adjustable between 0A and 150A
In some embodiments, the dc power supply is provided with a ground connection.
Drawings
Fig. 1 is a schematic structural view of a device for refining metal powder according to an embodiment of the present invention.
Reference numerals:
direct current power supply 1, molten metal 2, reaction device 3, accommodating cavity 31, pouring gate 4 and nozzle 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The method for promoting the refining of the metal powder comprises the following steps:
step one, preparing molten metal 2 according to requirements.
And step two, placing the prepared molten metal 2 into a reaction device 3.
And step three, introducing direct current into the molten metal 2 to enable the molten metal 2 to have charges with the same attribute.
And step four, after the molten metal 2 with the same attribute charges flows out of a gate 4 of the reaction device 3, the molten metal with the same attribute charges is scattered through a high-pressure medium sprayed out of a nozzle 5.
And step five, cooling the scattered molten metal 2 and solidifying the molten metal.
And step six, drying, filtering and screening the metal powder obtained after the metal liquid flowing out from the pouring gate 4 of the reaction device 3 is solidified to obtain metal fine powder.
In the step one, the prepared molten metal 2 comprises one of low-silicon molten steel or scrap steel raw material smelting molten metal 2.
In the third step, direct current is introduced into the molten metal 2, so that the charges with the same property in the molten metal 2 comprise:
connecting the positive pole of a direct current power supply with the metal liquid 2, and introducing 0-150A of continuously adjustable current into the metal liquid 2 to enable the metal liquid 2 to be charged with positive charges.
Or connecting the negative pole of the direct current power supply with the metal liquid 2, and introducing 0-150A of continuously adjustable current into the metal liquid 2 to enable the metal liquid 2 to carry negative charges.
It will be appreciated that the dc power supply is generally divided into a cathode (negative electrode) which is connected to the molten metal to impart a negative charge to the molten metal and an anode (positive electrode) which is connected to the molten metal to impart a positive charge to the molten metal.
In the fourth step, the scattering the molten metals 2 having the same property charge with the high-pressure medium includes using one of a high-pressure gas or a high-pressure liquid to scatter the molten metals 2 having the same property charge.
When the molten metal 2 is broken into particles by high-pressure liquid or high-pressure gas and is rapidly cooled, the particles are dried and screened to obtain products with different specifications.
According to the method for promoting the metal powder to be refined, disclosed by the embodiment of the invention, the metal liquid 2 in the reaction device 3 is provided with the same positive charge or negative charge, so that the phenomenon that like poles repel each other is generated, the metal liquid 2 drops are further promoted to be away from each other, and the collision and bonding probability among the atomized metal powders is prevented.
The following is an exemplary illustration of a set of control experiments:
experimental groups:
a low silicon molten steel having a carbon mass ratio of 0.56 wt% and a manganese mass ratio of 1.2% is disposed in a reactor 3, a gate 4 is opened to allow the low silicon molten steel in the reactor 3 to flow out from the gate 4, and when the low silicon molten steel flows out from the gate 4, a high pressure liquid is ejected through an annular nozzle 5 to scatter and cool the low silicon molten steel to form low silicon iron powder, and the low silicon iron powder is dried and sieved by a sieving device having a pore size of 35 mm. The undersize product (low silicon iron powder) accounts for about 45%. The yield of the whole iron powder is 90 percent.
Control group:
the low silicon molten steel with the carbon mass ratio of 0.56 wt% and the manganese mass ratio of 1.2% is configured in the reaction device 3, the positive electrode of the direct current power supply 1 is connected to the low silicon molten steel, the low silicon molten steel in the reaction device 3 flows out from the pouring gate 4 by opening the pouring gate 4 after the low silicon molten steel is provided with positive charges, high-pressure liquid is sprayed out through the annular nozzle 5 to scatter and cool the low silicon molten steel to form low silicon iron powder when the low silicon molten steel flows out from the pouring gate 4, and the low silicon iron powder is dried and then screened through a screening device with the hole diameter of 35 mm. The undersize product (low silicon iron powder) accounts for about 60 percent. The yield of the whole iron powder was 93%.
Therefore, the method for promoting the refining of the metal powder has the advantages of refining the metal powder and improving the yield.
As shown in fig. 1, the apparatus for refining metal powder according to the embodiment of the present invention includes a direct current power supply 1, a reaction device 3, a gate 4, and a nozzle 5.
Wherein, the reaction device 3 has a containing cavity 31, the direct current power supply 1 is electrically connected with the containing cavity 31 of the reaction device 3, and the bottom of the reaction device 3 is provided with a through hole (not shown). The gate 4 is provided on the outer wall of the reaction device 3 and connected to the through hole.
The nozzle 5 is provided below the gate 4 and opposite to the outlet of the gate 4. Wherein the nozzle 5 is annular.
According to the refining device of the metal powder, the power supply device is connected with the reaction device 3, the current with positive charges can be introduced into the containing cavity 31 of the reaction device 3 through the power supply device, and when the metal liquid 2 is placed in the reaction device 3, the metal liquid 2 placed in the reaction device 3 can have positive charges, so that liquid drops in the metal liquid 2 are mutually repelled. When high-pressure gas or high-pressure liquid is added into the nozzle 5, the molten metal 2 is broken up and pushed by the high-pressure gas/liquid to form fine liquid drops, and the liquid drops of the molten metal 2 are further separated from each other, decomposed and refined and prevented from re-agglomeration of the molten metal 2 in the breaking up and spraying process because the liquid drops of the molten metal 2 are positively charged. In the subsequent metal powder production process, metal powder having a smaller particle size can be produced.
It can be understood that the nozzle 5 is annular, so that the metal liquid 2 sprayed out through the nozzle 5 is uniformly stressed in the scattering process, the phenomenon of splashing to one side is avoided, and the collection is convenient.
In some embodiments, the accommodating chamber 31 of the reaction device 3 is provided with an insulating layer.
According to the refining device of the metal powder provided by the embodiment of the invention, through the arrangement of the insulating layer, the metal liquid 2 in the reaction device 3 can be prevented from being electrified to influence other instruments, equipment, human bodies and the like. It will be understood by those skilled in the art that the insulating layer may be disposed inside the reaction device 3, or may be disposed outside the reaction device 3, or other devices having an insulating function may be used to cover or place the reaction device 3.
In some embodiments, the dc power source 1 is connected to the bottom wall of the accommodating chamber 31 of the reaction device 3.
According to the refining device of the metal powder provided by the embodiment of the invention, the molten metal 2 arranged in the reaction device 3 can be electrified stably in the production process. Specifically, the dc power supply 1 is connected to the bottom wall of the accommodating chamber 31 of the reaction device 3, and when the molten metal 2 in the reaction device 3 gradually decreases, the electric current can be continuously supplied to the molten metal 2, so that the molten metal 2 always has positive charges, thereby promoting the refining of the metal powder.
In some embodiments, the bottom end of reaction apparatus 3 is a cone.
According to the refining device of the metal powder of the embodiment of the invention, the reaction device 3 of the cone can ensure that the molten metal 2 in the reaction device 3 can be kept in an electrified state to the maximum extent. Specifically, when the direct-current power supply 1 is connected with the tip of the reaction device 3 of the cone, all positive charges can be carried in the process that the molten metal 2 is sprayed out from the nozzle, and further the thinning of the metal powder is increased.
In some embodiments, the power of the DC power supply 1 is continuously adjustable between 2kW and 50 kW. The current of the direct current power supply 1 is continuously adjustable between 0A and 150A.
It can be understood that if the power and current of the dc power supply are too low, the amount of charges in the molten metal is small, and the mutual repulsion force is not sufficient, which may result in an insignificant iron powder refining effect. Because the molten metal that the atomizing crucible held generally is several kilograms to tens kilograms, too high mains power and electric current can cause the energy waste, can be higher to the insulating degree requirement of system simultaneously. Therefore, the power and current of the power supply can be selected appropriately according to different metal capacities of the crucible. For example, when 5kg of 304 stainless steel is smelted in a crucible for atomization, the current can be selected to be 50A, and the power can be selected to be 5-10 kW.
In some embodiments, the dc power supply 1 is provided with a ground connection.
According to the refining device of the metal powder, the overall safety can be improved by grounding the direct-current power supply 1.
In the description of the present invention, 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," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific 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 and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for promoting the refining of metal powder is characterized by comprising the following steps:
preparing molten metal according to requirements;
putting the prepared molten metal into a reaction device;
introducing direct current into the molten metal to enable the molten metal to have charges with the same attribute;
after the molten metal with the same attribute charges flows out of a pouring gate of the reaction device, high-pressure medium is sprayed out through a nozzle to break up the molten metal with the same attribute charges;
cooling the scattered molten metal and solidifying the molten metal;
the metal powder obtained after the liquid is solidified is dried, filtered and sieved to obtain fine metal powder.
2. The method for promoting the refining of metal powder according to claim 1, wherein the step of introducing direct current into the molten metal to make the charges with the same property in the molten metal comprises the following steps:
connecting the positive electrode of a direct current power supply with the molten metal to enable the molten metal to be positively charged;
or connecting the negative electrode of the direct current power supply with the molten metal to make the molten metal have negative charges.
3. The method for promoting the refining of metal powder according to claim 2, wherein the step of charging the molten metal with the same property electric charge by introducing direct current into the molten metal further comprises the following steps: and introducing continuously adjustable current with the current of 0A-150A and the power of 2kW-50kW into the molten metal.
4. A device for refining metal powder is characterized by comprising:
a direct current power supply;
the reaction device is provided with an accommodating cavity, the direct-current power supply is electrically connected with the accommodating cavity of the reaction device, and the bottom of the reaction device is provided with a through hole;
the pouring gate is arranged on the outer wall of the reaction device and is connected with the through hole;
and the nozzle is used for introducing a high-pressure medium, is annular and is arranged at the lower end of the pouring gate.
5. The apparatus for refining metal powder as claimed in claim 4, wherein an insulating layer is provided in the receiving chamber of the reaction means.
6. The apparatus for refining metal powder as recited in claim 4, wherein the DC power supply is connected to a bottom wall of the containing chamber of the reaction apparatus.
7. The apparatus for refining metal powder as claimed in claim 6, wherein the bottom end of the reaction means is a cone.
8. A device for refining metal powder as defined in claim 4, wherein the power of said DC power supply is continuously adjustable from 2kW to 50 kW.
9. The apparatus for refining metal powder as claimed in claim 4, wherein the current of the DC power supply is continuously adjustable from 0A to 150A.
10. An apparatus for fining metal powder according to any one of claims 4 to 9, wherein said direct current power supply is provided with a ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122140.2A CN113751718A (en) | 2021-09-24 | 2021-09-24 | Method and apparatus for promoting metal powder fining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122140.2A CN113751718A (en) | 2021-09-24 | 2021-09-24 | Method and apparatus for promoting metal powder fining |
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| CN113751718A true CN113751718A (en) | 2021-12-07 |
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| CN202111122140.2A Withdrawn CN113751718A (en) | 2021-09-24 | 2021-09-24 | Method and apparatus for promoting metal powder fining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523116A (en) * | 2022-01-24 | 2022-05-24 | 中国科学院福建物质结构研究所 | Method and device for solving powder sticking problem of laser spheroidizing equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416472A (en) * | 2011-12-08 | 2012-04-18 | 沈阳工业大学 | Spray forming atomization device for applying static electricity to metal liquid and atomization method for device |
| CN111299601A (en) * | 2020-04-29 | 2020-06-19 | 辽宁冠达新材料科技有限公司 | Device and method for improving spherical rate of metal powder |
-
2021
- 2021-09-24 CN CN202111122140.2A patent/CN113751718A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416472A (en) * | 2011-12-08 | 2012-04-18 | 沈阳工业大学 | Spray forming atomization device for applying static electricity to metal liquid and atomization method for device |
| CN111299601A (en) * | 2020-04-29 | 2020-06-19 | 辽宁冠达新材料科技有限公司 | Device and method for improving spherical rate of metal powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523116A (en) * | 2022-01-24 | 2022-05-24 | 中国科学院福建物质结构研究所 | Method and device for solving powder sticking problem of laser spheroidizing equipment |
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