Device for preparing alloy powder through steam atomization

Abstract

The utility model relates to a device for preparing alloy powder through steam atomization. The device comprises an atomizing chamber; the crucible is arranged at the top of the atomizing chamber; one end of the flow guide pipe is connected with the bottom of the crucible, and the other end of the flow guide pipe penetrates through the top of the atomizing chamber and is located in the atomizing chamber; the steam generator is arranged at the top of the atomizing chamber; one end of the steam nozzle is connected with the steam generator through a hose, the other end of the steam nozzle penetrates through the top of the atomizing chamber and is obliquely close to the end part of the flow guide pipe, and the steam nozzle is suitable for spraying saturated steam; the water content in the saturated water vapor is only about 3%, oxidation of oxygen atoms to the metal powder can be reduced, in addition, compared with high-speed gas, the saturated water vapor has the advantages that the density is improved, the impact force is enhanced, the high temperature of the saturated water vapor plays a key role in the crushing process, the solidification process of metal molten drops is effectively delayed, and the metal molten drops are prevented from being solidified. And the high-temperature and high-pressure saturated water vapor is used for preparing metal powder with smaller particle size.

Description

Technical Field

[0001] The utility model relates to metal powder preparation, in particular to a device for preparing alloy powder by steam atomization. Background Art

[0002] As a key material, metal powder, with its unique physical and chemical properties, has shown broad application potential in a wide range of fields, including aerospace, automotive manufacturing, electronics, and medical devices. However, traditional methods for preparing metal powders, such as reduction methods, often face challenges such as cumbersome preparation processes, high energy consumption, and difficulty in controlling stable powder quality. These difficulties have greatly hindered the large-scale production and widespread application of metal powders.

[0003] Conventional methods for preparing metal powders also involve contacting the molten metal with a high-speed airflow, but the resulting metal powder has a larger particle size.

[0004] In summary, how to prepare metal powder has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to realize the preparation of metal powder;

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The utility model discloses a device for preparing alloy powder by steam atomization, comprising: an atomization chamber; a crucible, which is arranged at the top of the atomization chamber; a flow guide tube, one end of which is connected to the bottom of the crucible, and the other end of which passes through the top of the atomization chamber and is located in the atomization chamber; a steam generator, which is arranged at the top of the atomization chamber; a steam nozzle, one end of which is connected to the steam generator through a hose, and the other end of which passes through the top of the atomization chamber and is obliquely close to the end of the flow guide tube, and is suitable for spraying saturated water vapor;

[0008] In this scheme, molten metal is placed in a crucible and flows out of a draft tube to form metal droplets. At the same time, high-temperature saturated water vapor generated by a steam generator contacts the metal droplets through a steam nozzle. The high-speed saturated water vapor and the metal droplets produce a strong crushing effect, achieving the preparation of metal powder.

[0009] Since the water content in saturated water vapor is only about 3%, it can reduce the oxidation of metal powder by oxygen atoms. In addition, compared with high-speed gas, the density of saturated water vapor is increased and the impact force is strengthened. The high temperature of saturated water vapor plays a key role in the crushing process, effectively delaying the solidification process of metal droplets. High-temperature and high-pressure saturated water vapor can realize the preparation of metal powder with smaller particle size.

[0010] In order to further improve the preparation effect of metal powder, the utility model adopts two steam nozzles symmetrically arranged with the guide tube as the center line;

[0011] With the guide tube as the center line, two steam nozzles are set on the left and right. In this way, after the two streams of saturated water vapor impact the metal droplets, the impact of the metal powder on the side wall of the atomization chamber can be reduced, and the metal powder can fall to the bottom of the middle atomization chamber.

[0012] In order to facilitate the collection of metal powder, the utility model adopts a tapered section at the bottom of the atomization chamber to facilitate collection;

[0013] In this way, the tapered section can gather the metal powder at the bottom of the atomization chamber for easy collection.

[0014] In order to further facilitate the collection of metal powder, the utility model adopts a powder collecting tank that is detachably provided at the bottom of the atomization chamber;

[0015] By setting up a powder collecting tank, metal powder can fall into the powder collecting tank. When the powder collecting tank is full, the powder collecting tank can be separated from the atomization chamber.

[0016] The beneficial effects of the present invention are as follows: the present invention is a device for preparing alloy powder by steam atomization. In the device, the water content in the saturated water vapor is only about 3%, which can reduce the oxidation of metal powder by oxygen atoms. In addition, compared with high-speed gas, the density of saturated water vapor is increased and the impact force is enhanced. The high temperature of saturated water vapor plays a key role in the crushing process, effectively delaying the solidification process of metal droplets. The high-temperature and high-pressure saturated water vapor can realize the preparation of metal powder with smaller particle size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 yes Figure 2 A magnified view of point A;

[0021] In the figure: 1-atomization chamber, 11-converging section, 2-crucible, 3-flow guide tube, 4-steam generator, 5-steam nozzle, 6-hose, 7-powder collecting tank. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0023] like Figure 1-3 As shown, the utility model is a device for preparing alloy powder by steam atomization, comprising: an atomization chamber 1; a crucible 2, which is arranged at the top of the atomization chamber 1; a flow guide tube 3, one end of which is connected to the bottom of the crucible 2, and the other end passes through the top of the atomization chamber 1 and is located in the atomization chamber 1; a steam generator 4, which is arranged at the top of the atomization chamber 1; a steam nozzle 5, one end of which is connected to the steam generator 4 through a hose 6, and the other end passes through the top of the atomization chamber 1 and is obliquely close to the end of the flow guide tube 3, which is suitable for spraying saturated water vapor;

[0024] In this solution, molten metal is placed in a crucible 2 and flows out of a flow guide tube 3 to form metal droplets. At the same time, high-temperature saturated water vapor generated by a steam generator 4 contacts the metal droplets through a steam nozzle 5. The high-speed saturated water vapor and the metal droplets produce a strong crushing effect, thereby achieving the preparation of metal powder.

[0025] Since the water content in saturated water vapor is only about 3%, it can reduce the oxidation of metal powder by oxygen atoms. In addition, compared with high-speed gas, the density of saturated water vapor is increased and the impact force is strengthened. The high temperature of saturated water vapor plays a key role in the crushing process, effectively delaying the solidification process of metal droplets. High-temperature and high-pressure saturated water vapor can realize the preparation of metal powder with smaller particle size.

[0026] like Figure 3 As shown, in order to further improve the preparation effect of metal powder, the utility model adopts two steam nozzles 5 symmetrically arranged with the guide tube 3 as the center line;

[0027] With the guide tube 3 as the center line, two steam nozzles 5 are set on the left and right. In this way, after the two streams of saturated water vapor impact the metal droplets, the impact of the metal powder on the side wall of the atomization chamber 1 can be reduced, and the metal powder can fall into the bottom of the atomization chamber 1.

[0028] like Figure 1-2 As shown, in order to facilitate the collection of metal powder, the utility model adopts a tapered section 11 at the bottom of the atomization chamber 1 for facilitating collection;

[0029] In this way, the tapered section 11 can gather the metal powder at the bottom of the atomization chamber 1 for easy collection.

[0030] like Figure 1-2 As shown, in order to further facilitate the collection of metal powder, the utility model adopts a powder collecting tank 7 that is detachably provided at the bottom of the atomizing chamber 1;

[0031] By providing the powder collecting tank 7 , metal powder can fall into the powder collecting tank 7 . When the powder collecting tank 7 is full, the powder collecting tank 7 can be separated from the atomization chamber 1 .

[0032] Working principle:

[0033] like Figure 1-3 As shown, the present invention first generates high-temperature and high-pressure saturated water vapor through the steam generator 4; this key equipment is tightly connected to the steam nozzle 5 through the hose 6 to ensure that the steam can be stably and efficiently transmitted to the atomization area; before the powder making process begins, the steam generator 4 will be started in advance to make the flow field of the steam nozzle 5 reach a stable state, laying a solid foundation for the subsequent metal atomization process.

[0034] Once the flow field stabilizes, the molten metal is precisely poured into the crucible 2. The crucible 2 guides the molten metal to the atomization area through its built-in flow guide tube 3. Here, high-temperature, high-pressure saturated water vapor is ejected at an extremely high speed through the steam nozzle 5, producing a strong crushing effect on the molten metal droplets. This step is the core link in the formation of metal powder, which determines the particle size distribution, sphericity and overall quality of the metal powder.

[0035] After being crushed and atomized by steam, the metal droplets quickly enter the atomization chamber 1. Inside the atomization chamber, the metal droplets cool and solidify in a very short time, eventually forming high-quality spherical metal powder, which is collected by the powder collection tank 7. This powder not only has uniform particle size and high sphericity, but also has excellent physical and chemical properties.

[0036] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for preparing alloy powder by steam atomization, characterized in that: include: Atomization chamber (1); A crucible (2) is arranged on the top of the atomization chamber (1); a flow guide tube (3), one end of which is connected to the bottom of the crucible (2), and the other end of which passes through the top of the atomization chamber (1) and is located in the atomization chamber (1); a steam generator (4) disposed on the top of the atomization chamber (1); A steam nozzle (5) has one end connected to the steam generator (4) via a hose (6), and the other end passes through the top of the atomizing chamber (1) and is obliquely close to the end of the guide tube (3), and is suitable for spraying saturated water vapor.

2. The device for preparing alloy powder by steam atomization according to claim 1, characterized in that: Two steam nozzles (5) are symmetrically arranged with the flow guide tube (3) as the center line.

3. The device for preparing alloy powder by steam atomization according to claim 1, characterized in that: The bottom of the atomization chamber (1) is provided with a tapered section (11) for facilitating collection.

4. The device for preparing alloy powder by steam atomization according to claim 1, characterized in that: A powder collecting tank (7) is detachably provided at the bottom of the atomization chamber (1).

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