CN216263470U - Preparation device of amorphous/nanocrystalline multi-scale composite powder - Google Patents
Preparation device of amorphous/nanocrystalline multi-scale composite powder Download PDFInfo
- Publication number
- CN216263470U CN216263470U CN202122586337.3U CN202122586337U CN216263470U CN 216263470 U CN216263470 U CN 216263470U CN 202122586337 U CN202122586337 U CN 202122586337U CN 216263470 U CN216263470 U CN 216263470U
- Authority
- CN
- China
- Prior art keywords
- circular metal
- atomizing nozzle
- amorphous
- powder
- metal disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a device for preparing amorphous/nanocrystalline multi-scale composite powder, which comprises a spray melting device and a powder collecting device; the spray melting device comprises a smelting furnace, a gas transmission pipe and an atomizing nozzle; openings are formed in the top and the bottom of the smelting furnace; the gas transmission pipe is arranged at an opening at the top of the smelting furnace; the atomizing nozzle is arranged at the bottom of the smelting furnace; the powder collecting device comprises a circular metal disc and a rotary driving device, wherein the circular metal disc is used for collecting atomized melt ejected by the atomizing nozzle, and the rotary driving device is used for driving the circular metal disc to rotate around the center of the circular metal disc. The utility model solves the problems of low production efficiency, more impurities in the prepared amorphous powder and poor powder performance of the existing amorphous powder material preparation device.
Description
Technical Field
The utility model relates to the field of amorphous material preparation devices, in particular to a device for preparing amorphous/nanocrystalline multi-scale composite powder.
Background
The amorphous material serving as a novel functional material not only has extremely high strength, toughness, wear resistance and corrosion resistance, but also shows excellent soft magnetism and superconductivity, and is widely applied to the fields of electronics, machinery, chemical engineering and the like. The amorphous alloy powder is one of important materials. The amorphous alloy must be cooled at a very high cooling rate (greater than 10) during its preparation6k/s) that rapidly cools at a rate of millions of degrees celsius per second so that the atoms in the metal have no time to rearrange and the disordered structure is frozen in, thereby forming an amorphous state.
The conventional preparation method is mainly an amorphous strip crushing method. The amorphous ribbon crushing method can prepare various amorphous alloy powders, and the preparation process generally comprises melting and spinning mother alloys through melt spinning quenching (Meltspinning) to prepare amorphous thin ribbons, and then mechanically crushing the ribbons. Melt spin quenching quench is generally performed by placing a quartz crucible having a master alloy ingot in an induction melting coil. The coil is energized with alternating current, namely electromagnetic interaction is generated in the ingot body, and the generated skin current enables the ingot body to be melted in a short time (the specific melting time depends on the type and the compactness of a sample). When the melt is fully melted, applying a certain jet pressure (generally taking inert gas Ar as a gas source) to the inner cavity of the quartz crucible to ensure that the melt is uniformly jetted to the surface of a vertically-lower copper roller rotating at a high speed from a small hole at the bottom of the quartz crucible, throwing the melt out towards the tangential direction of a contact point of the surface of the copper roller, and collecting the melt in a flight tube of MS equipment. The powder obtained by the method is mostly irregular in shape such as flake shape and needle shape, and the service performance is seriously influenced. Meanwhile, in the process of preparing the amorphous thin strip, the thin strips are easy to be intertwined with each other, so that the thin strips are difficult to cut and crush into powder, and the preparation time cost is greatly increased. The material loss is easily caused in the crushing process, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a device for preparing amorphous/nanocrystalline multi-scale composite powder, which aims to solve the problems of low production efficiency, more impurities in the prepared amorphous powder and poor powder performance of the existing device for preparing amorphous powder materials.
The purpose of the utility model is realized by the following technical scheme:
a device for preparing amorphous/nanocrystalline multi-scale composite powder comprises a spray melting device and a powder collecting device;
the spray melting device comprises a smelting furnace, a gas transmission pipe and an atomizing nozzle; openings are formed in the top and the bottom of the smelting furnace; the gas transmission pipe is arranged at an opening at the top of the smelting furnace; the atomizing nozzle is arranged at an opening at the bottom of the smelting furnace;
the powder collecting device comprises a circular metal disc and a rotary driving device, wherein the circular metal disc is used for collecting atomized melt ejected by the atomizing nozzle, and the rotary driving device is used for driving the circular metal disc to rotate around the center of the circular metal disc.
Preferably, the circular metal disc is a circular metal disc having a concave shape.
Preferably, the circular metal disc is a circular copper disc.
Preferably, the powder collecting device further comprises a collecting cavity;
the top of the collecting cavity is provided with an opening for the atomizing nozzle to enter the collecting cavity;
the circular metal disc is positioned in the collecting cavity and is arranged below the atomizing nozzle.
Preferably, the spray melting device is mounted on a mechanical arm for adjusting the distance between the circular metal disc and the atomizing nozzle.
Specifically, the distance is a horizontal distance.
Specifically, the distance is a vertical distance.
Specifically, the smelting furnace includes a furnace body and an induction coil wound on the outer surface of the furnace body.
Preferably, the furnace body is a quartz glass tube.
Preferably, the furnace body is a boron nitride crucible.
According to the device for preparing the amorphous/nanocrystalline multi-scale composite powder, when the alloy is completely melted, high-speed air injection pressure is applied through the air delivery pipe, the melt is sprayed onto the surface of the circular metal disc rotating at high speed from the atomizing nozzle, and the amorphous/nanocrystalline multi-scale composite powder is obtained through spin-casting quenching.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
(1) the device for preparing the amorphous/nanocrystalline multi-scale composite powder has extremely high cooling speed (up to 10)10k/s), the microstructure size of the prepared powder can reach a nano/amorphous level (the average size is about 20nm), and compared with a banded microstructure prepared by a melt spinning quenching device, the grain size is smaller.
(2) According to the device for preparing the amorphous/nanocrystalline multi-scale composite powder, the melt is thrown out through the lower high-speed rotating copper disc in the form of a plurality of metal beams through the atomizing nozzle, so that the powder with the macroscopic size of micron level is directly formed, the production benefit is greatly improved, and the time cost is saved.
(3) According to the device for preparing the amorphous/nanocrystalline multi-scale composite powder, atomized melt is sprayed to the surface of the circular metal disc rotating at a high speed through the nozzle, and the material spun out of the copper disc has a multi-scale structure due to different cooling rates because the linear speed of the surface of the circular metal disc increases from the center to the edge.
(4) The spray melting device is arranged on the mechanical arm for adjusting the distance between the circular metal disc and the atomizing nozzle, can be adjusted according to different materials and production requirements, and enlarges the application range of the spray melting device.
Drawings
FIG. 1 is a schematic diagram of the composition of an apparatus for preparing amorphous/nanocrystalline multi-scale composite powder according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1, the apparatus for preparing amorphous/nanocrystalline multi-scale composite powder of the present invention comprises a spray melting apparatus and a powder collecting apparatus;
the spray melting device of the embodiment comprises a smelting furnace, a gas conveying pipe 1 and an atomizing nozzle 2. The smelting furnace comprises a furnace body 3 and an induction coil 4 wound on the outer surface of the furnace body 3, wherein openings are formed in the top and the bottom of the furnace body 3; the gas transmission pipe 1 is arranged at an opening at the top of the furnace body 3; the atomizing nozzle 2 is installed at an opening at the bottom of the furnace body 3.
The furnace body of the present embodiment may be a quartz glass tube or a boron nitride crucible.
The powder collecting device of the embodiment comprises a circular metal disc 5 for collecting atomized melt ejected by an atomizing nozzle and a rotary driving device 7 for driving the circular metal disc to rotate around the center of the circular metal disc; a collection chamber 6 may also be included; the top of the collecting cavity is provided with an opening for the atomizing nozzle to enter the collecting cavity; the circular metal disc is positioned in the collecting cavity and is arranged below the atomizing nozzle.
The circular metal disc of the present embodiment may be a circular copper disc having a concave shape; the spray melting device is arranged on a mechanical arm for adjusting the distance between the circular metal disc and the atomizing nozzle; can be adjusted according to different materials and production requirements.
The atomizing nozzle of the embodiment can adopt an atomizing nozzle device in Chinese patent CN201820783181.3 to realize multi-hole spraying atomization and further enlarge the preparation scale.
The process of preparing the amorphous/nanocrystalline multi-scale composite powder by using the device for preparing the amorphous/nanocrystalline multi-scale composite powder of the embodiment is as follows:
(1) placing the alloy material in a furnace body of a smelting furnace, and melting the alloy through high-frequency induction heating;
(2) after the alloy is completely molten, the mechanical arm drives the spray melting device to move downwards and enter the collection cavity through the opening at the top of the collection cavity (the position of the dotted line in the figure 1); applying air injection pressure (0.6-0.8 MPa) to the air delivery pipe to atomize the alloy material into metal beams through an atomizing nozzle, and injecting the metal beams onto a circular copper disc rotating at a high speed (2000-5000 r/min);
(3) the metal beam is quenched by rotary throwing of a round copper disc to obtain amorphous/nanocrystalline multi-scale composite powder; and (3) sweeping and collecting the powder condensed on the surface of the round copper plate, the bottom of the collection cavity or the wall of the cavity by using a long fiber brush.
The amorphous/nanocrystalline multi-scale composite powder prepared by the embodiment has a microstructure size reaching a nanometer level, and the average size is about 20 nm. Since the linear velocity of the circular metal disc surface increases from the center to the edge, the material spun off by the copper disc has a multi-scale structure due to different cooling rates.
Compared with the existing melt rotary-throwing preparation device, the preparation device for amorphous/nanocrystalline multi-scale composite powder of the embodiment has the following advantages:
(1) the powder prepared by the existing melt rotary-throwing preparation device is easy to intertwine with thin strips thrown by melt rotary-throwing in the amorphous strip preparation stage, so that the thin strips are difficult to arrange, a large amount of time can be spent in the crushing stage, and the time cost is higher. In the technology of the utility model, the melt is thrown out through the lower high-speed rotating copper disc in the form of a plurality of metal beams by the atomizing nozzle, and the powder with the macroscopic size of micron level is directly formed, thereby greatly improving the production benefit and saving the time cost.
(2) Compared with the ribbon-shaped microstructure prepared by the existing melt spinning preparation device, the amorphous/nanocrystalline multi-scale composite powder has smaller grain size and has an amorphous/nanocrystalline multi-scale composite microstructure.
(3) The existing melt spinning preparation device is used for preparing the amorphous thin strip, because the melt is only sprayed out from a round hole at the bottom of a quartz glass tube, the size of the round hole is about 0.30mm, and the round hole at the bottom of the glass tube is blocked due to too much sample amount, the sample preparation amount is less. The device for preparing the amorphous/nanocrystalline multi-scale composite powder can realize porous spraying atomization and can be used for large-scale preparation.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The device for preparing the amorphous/nanocrystalline multi-scale composite powder is characterized by comprising a spray melting device and a powder collecting device;
the spray melting device comprises a smelting furnace, a gas transmission pipe and an atomizing nozzle; openings are formed in the top and the bottom of the smelting furnace; the gas transmission pipe is arranged at an opening at the top of the smelting furnace; the atomizing nozzle is arranged at an opening at the bottom of the smelting furnace;
the powder collecting device comprises a circular metal disc and a rotary driving device, wherein the circular metal disc is used for collecting atomized melt ejected by the atomizing nozzle, and the rotary driving device is used for driving the circular metal disc to rotate around the center of the circular metal disc.
2. The apparatus according to claim 1, wherein the circular metal plate is a circular metal plate having a concave shape.
3. The apparatus according to claim 1 or 2, wherein the circular metal plate is a circular copper plate.
4. The apparatus for preparing amorphous/nanocrystalline multi-scale composite powder according to claim 1, wherein the powder collecting apparatus further comprises a collecting chamber;
the top of the collecting cavity is provided with an opening for the atomizing nozzle to enter the collecting cavity;
the circular metal disc is positioned in the collecting cavity and is arranged below the atomizing nozzle.
5. The apparatus for preparing amorphous/nanocrystalline multi-scale composite powder according to claim 1, wherein the spray melting apparatus is mounted on a mechanical arm for adjusting a distance between the circular metal disk and the atomizing nozzle.
6. The apparatus according to claim 5, wherein the distance is a horizontal distance.
7. The apparatus according to claim 5, wherein the distance is a vertical distance.
8. The apparatus of claim 1, wherein the melting furnace comprises a furnace body and an induction coil wound around an outer surface of the furnace body.
9. The apparatus according to claim 8, wherein the furnace body is a quartz glass tube.
10. The apparatus of claim 8, wherein the furnace body is a boron nitride crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122586337.3U CN216263470U (en) | 2021-10-26 | 2021-10-26 | Preparation device of amorphous/nanocrystalline multi-scale composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122586337.3U CN216263470U (en) | 2021-10-26 | 2021-10-26 | Preparation device of amorphous/nanocrystalline multi-scale composite powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216263470U true CN216263470U (en) | 2022-04-12 |
Family
ID=81073040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122586337.3U Active CN216263470U (en) | 2021-10-26 | 2021-10-26 | Preparation device of amorphous/nanocrystalline multi-scale composite powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216263470U (en) |
-
2021
- 2021-10-26 CN CN202122586337.3U patent/CN216263470U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4221587A (en) | Method for making metallic glass powder | |
| US3881542A (en) | Method of continuous casting metal filament on interior groove of chill roll | |
| CN101376172B (en) | Quadric injection metal atomization device of rotary-forming film | |
| CN103611942B (en) | The method of high pressure melting atomization nitrogen quenching device and production samarium Fe-N Alloys powder thereof | |
| CN106956008A (en) | A kind of 3D printing preparation method of Hastelloy X-alloy powder | |
| CN102416472B (en) | Reaction-injection moulding atomising device and the atomization method thereof of electrostatic is added in a kind of molten metal | |
| CN113145855B (en) | Device and method for preparing high-melting-point alloy powder through electric arc | |
| CN1676249A (en) | Method and apparatus for preparing sheet-type metal pwoder by atomized drop deformation | |
| JP2020045556A (en) | Method and device for preparing spherical titanium alloy fine powder based on special centrifugal atomizing disc | |
| US4523621A (en) | Method for making metallic glass powder | |
| CN110695365A (en) | Method and device for preparing metal type coated powder by gas-solid two-phase atomization | |
| US3939900A (en) | Apparatus for continuous casting metal filament on interior of chill roll | |
| CN203565872U (en) | High-pressure smelting and atomizing nitrogen quenching device | |
| CN216263470U (en) | Preparation device of amorphous/nanocrystalline multi-scale composite powder | |
| CN112643038A (en) | Device and method for preparing core-shell structure soft magnetic material through gas atomization | |
| CN109047787A (en) | The preparation method of hypoxemia low cost spherical titanium and Titanium Powder | |
| CA1133671A (en) | Method for making metallic glass powder and product | |
| CN113290250A (en) | Melt atomization preparation method of high-entropy alloy powder | |
| CN113145853B (en) | Gas atomization preparation device and method for spherical metal powder | |
| CN1172762C (en) | Atomizing pulverization technology and apparatus by high-power high-frequency electromagnetic oscillasion | |
| CN210387591U (en) | Preparation facilities of titanium and titanium alloy powder for 3D prints | |
| CN112296343B (en) | Method for preparing superfine metal powder by hollow electrode smelting | |
| JPH01111805A (en) | Rapid solidification of plasma spray magnetic alloy | |
| CN112658271A (en) | Efficient composite gas atomization powder preparation device and method | |
| CN108018520B (en) | Device and method capable of improving bonding strength of spray-formed composite pipe blank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |