Gas atomization device for iron-silicon-aluminum powder production

Abstract

The utility model discloses an iron-silicon-aluminum powder production gas atomization device which comprises a box body, a feeding hopper, a smelting furnace, a pouring hopper, a pouring groove, an atomizing nozzle, a powder collecting box and bottom feet, one end of a winding shaft is in transmission connection with a winding motor outside the box body, the pouring hopper is installed below the smelting furnace, the pouring groove is installed below the pouring hopper, and the powder collecting box is connected with the atomizing nozzle. The two atomizing nozzles are installed on the two sides below the pouring end of the pouring groove and connected with one end of the air pipe, the other end of the air pipe is connected with the air tank, the valve is installed on the air pipe, and the powder collecting box is installed below the atomizing nozzles. Through the structural design of the smelting furnace, the pouring hopper, the pouring groove, the atomizing nozzle and the like, the pouring amount of molten metal is adjusted through the pouring hopper, and the air injection amount of the atomizing nozzle is controlled through the valve, so that the uniformity of iron-silicon-aluminum powder particles produced through atomization is ensured, and the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of iron-silicon-aluminum powder production technology, and in particular to an iron-silicon-aluminum powder production gas atomization device. Background Technology

[0002] Iron-silicon-aluminum powder is a soft magnetic material powder, mainly composed of iron (Fe), silicon (Si), and aluminum (Al). Its standard composition typically includes approximately 5.4% aluminum, 9.6% silicon, and the remainder iron. When used in iron-silicon-aluminum magnetic powder cores, the alloy composition is generally controlled within the range of 5.2%-5.6% aluminum, 9.2%-9.8% silicon, and the remainder iron. This combination of elements gives the material excellent soft magnetic properties. The production of iron-silicon-aluminum powder involves three steps: melting, casting, and atomization. The metal materials are added to a melting furnace according to a specific ratio for melting. The molten alloy liquid is then cast. Simultaneously, nitrogen gas is blown onto the molten metal to atomize it. The atomized and cooled metal particles are the iron-silicon-aluminum powder. However, in existing atomization devices, the relationship between the amount of molten metal poured and the nitrogen blowing pressure is difficult to adjust during production, easily leading to uneven production of the iron-silicon-aluminum powder, thus affecting product quality. Utility Model Content

[0003] The purpose of this invention is to provide a gas atomization device for the production of iron-silicon-aluminum powder.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A gas atomization device for producing iron-silicon-aluminum powder includes a housing, a feed hopper, a smelting furnace, a casting hopper, a casting trough, atomizing nozzles, a powder collection box, and a base. The feed hopper is located at the top of the housing, and the base is installed at the bottom of the housing. The two sides of the smelting furnace are installed inside the housing via rotating shafts. A connecting block is provided on one side of the bottom of the smelting furnace, and the connecting block is fixedly connected to one end of a pull rope. The other end of the pull rope is wound around a winding shaft, and one end of the winding shaft is connected to a winding motor outside the housing. The casting hopper is installed below the smelting furnace, and the casting trough is installed below the casting hopper. Two atomizing nozzles are installed on both sides below the casting end of the casting trough and are angled. The two atomizing nozzles are connected to one end of a gas pipe, and the other end of the gas pipe is connected to a gas tank. A valve is installed on the gas pipe, and the powder collection box is installed below the atomizing nozzles.

[0006] Furthermore, the casting end of the casting tank is provided with a guide nozzle, which has a triangular structure and guides the molten metal to flow between the two atomizing nozzles.

[0007] Furthermore, a pouring nozzle is installed at the bottom of the pouring hopper, and a shoulder is provided at the upper end of the pouring nozzle. The pouring nozzle sits on the bottom of the pouring hopper through the upper shoulder. The pouring nozzle can be replaced as needed to achieve the purpose of maintenance. The pouring volume can also be adjusted by replacing the pouring nozzle with a different specification.

[0008] Furthermore, a door is provided on one side of the powder collection box, allowing the powder collection box to be removed by opening the door.

[0009] Furthermore, a viewing window is provided on one side of the housing, through which the internal condition of the device can be observed for adjustment.

[0010] In summary, this utility model has the following beneficial effects: By designing a smelting furnace, a pouring hopper, a pouring tank, and an atomizing nozzle, this utility model adjusts the pouring amount of molten metal through the pouring hopper and controls the jet volume of the atomizing nozzle through a valve, thereby ensuring the uniformity of the iron-silicon-aluminum powder particles produced by atomization and guaranteeing the quality of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the casting tank structure;

[0014] Figure 4 This is a cross-sectional view of the pouring nozzle.

[0015] In the diagram, 1. Box body; 2. Feed hopper; 3. Smelting furnace; 4. Rotating shaft; 5. Connecting block; 6. Pull rope; 7. Winding shaft; 8. Casting hopper; 9. Casting trough; 10. Atomizing nozzle; 11. Powder collection box; 12. Box door; 13. Viewing window; 14. Base; 15. Winding motor; 16. Air pipe; 17. Air tank; 18. Valve; 19. Drain nozzle; 20. Casting nozzle; 21. Shoulder. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0017] like Figure 1-2As shown, a gas atomizing device for producing iron-silicon-aluminum powder includes a housing 1, a feed hopper 2, a smelting furnace 3, a casting hopper 8, a casting tank 9, an atomizing nozzle 10, a powder collection box 11, and a base 14. The smelting furnace 3 is a high-frequency smelting furnace. The feed hopper 2 is located at the top of the housing 1, and the base 14 is installed at the bottom of the housing 1. The two sides of the smelting furnace 3 are installed inside the housing 1 via rotating shafts 4. A connecting block 5 is provided on one side of the bottom of the smelting furnace 3. The connecting block 5 is fixedly connected to one end of a pull rope 6, and the other end of the pull rope 6 is wound around a winding shaft 7. One end of the winding shaft 7 is connected to the housing 1. The external wound motor 15 is connected to the furnace. The casting hopper 8 is installed below the smelting furnace 3. The casting trough 9 is installed below the casting hopper 8. Two atomizing nozzles 10 are installed on both sides below the casting end of the casting trough 9, and the atomizing nozzles 10 are set at an angle. The two atomizing nozzles 10 are connected to one end of the gas pipe 16. The other end of the gas pipe 16 is connected to the gas tank 17. The gas tank 17 contains high-pressure nitrogen. A valve 18 is installed on the gas pipe 16. The powder collection box 11 is installed below the atomizing nozzles 10. The amount of gas sprayed by the atomizing nozzles 10 is controlled by adjusting the opening degree of the valve 18.

[0018] Further, such as Figure 3 As shown, the pouring end of the pouring tank 9 is provided with a flow guide nozzle 19. The flow guide nozzle 19 has a triangular structure and guides the molten metal to flow between the two atomizing nozzles 10.

[0019] Further, such as Figure 4 As shown, a pouring nozzle 20 is installed at the bottom of the pouring hopper 8. The upper end of the pouring nozzle 20 is provided with a shoulder 21. The pouring nozzle 20 sits on the bottom of the pouring hopper 8 through the upper shoulder 21. The pouring nozzle 20 can be replaced as needed to achieve the purpose of maintenance. The pouring volume can also be adjusted by replacing the pouring nozzle 20 with different specifications.

[0020] Furthermore, a door 12 is provided on one side of the box body 1 of the powder collection box 11, and the powder collection box 11 can be taken out by opening the door 12.

[0021] Furthermore, a viewing window 13 is provided on one side of the housing 1, through which the internal condition of the device can be observed and adjustments can be made.

[0022] Working principle: Iron, silicon, and aluminum raw materials are added to the melting furnace 3 from the feed hopper 2 according to the ratio. The melting furnace 3 is heated by electricity. After melting, the winding motor 15 rotates, and the melting furnace 3 is pulled along the rotating shaft 4 by the pull rope 6, pouring the molten metal into the casting hopper 8. The casting hopper 8 pours the molten metal into the casting tank 9 through the casting nozzle 20 in a metered manner. The molten metal slides down the casting tank 9 and falls from the guide nozzle 19. After passing through the two atomizing nozzles 10, the high-speed nitrogen gas sprays atomizes the molten metal and cools it to form iron-silicon-aluminum powder, which is collected through the powder collection box 11 at the bottom.

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A gas atomizing device for producing iron-silicon-aluminum powder, comprising a housing (1), a feed hopper (2), a smelting furnace (3), a casting hopper (8), a casting tank (9), an atomizing nozzle (10), a powder collection box (11), and a base (14), wherein the feed hopper (2) is disposed on the top of the housing (1), and the base (14) is installed on the bottom of the housing (1), characterized in that: The two sides of the smelting furnace (3) are installed in the housing (1) through the rotating shaft (4). A connecting block (5) is provided on one side of the bottom end of the smelting furnace (3). The connecting block (5) is fixedly connected to one end of the pull rope (6). The other end of the pull rope (6) is wound on the winding shaft (7). One end of the winding shaft (7) is connected to the winding motor (15) outside the housing (1). The casting hopper (8) is installed below the smelting furnace (3). The casting trough (9) is installed below the casting hopper (8). Two atomizing nozzles (10) are installed on both sides below the casting end of the casting trough (9). The atomizing nozzles (10) are set at an angle. The two atomizing nozzles (10) are connected to one end of the gas pipe (16). The other end of the gas pipe (16) is connected to the gas tank (17). A valve (18) is installed on the gas pipe (16). The powder collection box (11) is installed below the atomizing nozzles (10).

2. The atomizing device for producing iron-silicon-aluminum powder according to claim 1, characterized in that: The casting end of the casting tank (9) is provided with a flow nozzle (19), which has a triangular structure.

3. The atomizing device for producing iron-silicon-aluminum powder according to claim 2, characterized in that: The bottom of the casting hopper (8) is equipped with a casting nozzle (20), and the upper end of the casting nozzle (20) is provided with a shoulder (21). The casting nozzle (20) sits on the bottom of the casting hopper (8) through the upper shoulder (21).

4. The atomizing device for producing iron-silicon-aluminum powder according to claim 1, characterized in that: A door (12) is provided on one side of the box (1) of the powder collection box (11).

5. The atomizing device for producing iron-silicon-aluminum powder according to claim 1, characterized in that: A viewing window (13) is provided on one side of the box (1).

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