Atomizing pulverizing argon protection cover

Abstract

The utility model discloses a kind of atomization powder making argon protection cover, including the cover cylinder of being sleeved in the outer peripheral side of atomization powder making middle packet, the side of cover cylinder is connected with argon tube by argon interface, the tail end located in argon interface is connected with argon nozzle by catheter, argon nozzle is located in the top wall of cover cylinder, to make argon tube send argon by argon nozzle and surround the middle packet with argon.The utility model is connected with argon tube by argon interface by the cover cylinder being set, argon protection environment can be formed in the outer peripheral side of middle packet in atomization powder making process, effectively isolate the contact of oxygen and steel liquid, significantly reduce the oxygen content of finished product powder, make the metal powder of production be more suitable for the additive manufacturing field of higher requirement to powder oxygen content, such as 3D printing and laser cladding etc.Can improve the sphericity and fluidity of powder, to improve 3D printing powder laying effect, reduce the defect in printing process, improve the surface quality and dimensional accuracy of printed part.

Description

Technical Field

[0001] This utility model relates to a protective cover for argon gas used in atomizing powder production. Background Technology

[0002] In the existing field of additive manufacturing, atomization powder production technology is one of the key processes for obtaining high-quality metal powders.

[0003] Traditional non-vacuum atomizing furnaces operate in an atmospheric environment. Although they are simple in structure, have high production efficiency, and are widely applicable, they have significant drawbacks. Because non-vacuum atomizing furnaces cannot effectively isolate oxygen, molten steel easily comes into contact with oxygen during the atomization process, resulting in powders with generally high oxygen content.

[0004] Therefore, a protective cover for argon gas in atomization powder making is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an argon gas protective cover for atomized powder production, in order to solve the problem mentioned in the background art that traditional non-vacuum atomizing furnaces cannot effectively isolate oxygen, causing molten steel to easily come into contact with oxygen during the atomization process, resulting in generally high oxygen content in the produced powder.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an argon gas protective cover for atomizing powder production, including a cover sleeve fitted around the outer periphery of the atomizing powder production intermediate package. The side of the cover sleeve is connected to an argon gas pipe through an argon gas interface, and the tail end of the argon gas interface is connected to an argon gas nozzle through a conduit. The argon gas nozzle is located on the top wall of the cover sleeve, so that the argon gas pipe blows argon gas through the argon gas nozzle to surround the intermediate package.

[0007] Preferably, the shroud has multiple sets of through holes on the argon gas interface side, so that the argon gas pipe can guide argon gas to the nozzle through the through holes.

[0008] Preferably, the lower part of the argon nozzle is provided with multiple sets of argon nozzles, and the argon nozzles are arranged facing the tundish side so that the argon nozzles blow argon towards the tundish side.

[0009] Preferably, the front end of the cover has an operating port for operation. The operating port at the front end of the cover facilitates necessary operations by the operator.

[0010] Preferably, the height of the shroud below the operating port is higher than that of the tundish, so that the argon gas settles and surrounds the outer periphery of the tundish. The shroud's higher height below the operating port facilitates the settling of argon gas on the outer periphery of the tundish and creates a good containment effect.

[0011] Preferably, a flow-concentrating shroud is provided between the conduit and the side wall of the shroud, so that the argon gas interface can deliver argon gas to the conduit through the flow-concentrating shroud. The flow-concentrating shroud between the conduit and the side wall of the shroud helps to efficiently deliver argon gas to the conduit, optimizing the flow and distribution of argon gas.

[0012] Preferably, the shape of the cover tube is matched with that of the intermediate bag so that the cover tube fits snugly over the outer periphery of the intermediate bag.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the design of the shroud, creates an argon protective environment on the outer periphery of the tundish during the atomization powder production process. This effectively isolates oxygen from contact with the molten steel, significantly reducing the oxygen content of the finished powder. This makes the produced metal powder more suitable for additive manufacturing applications where high oxygen content is required, such as 3D printing and laser cladding. It also improves the sphericity and flowability of the powder, thereby enhancing the powder spreading effect in 3D printing, reducing defects during the printing process, and improving the surface quality and dimensional accuracy of the printed parts.

[0014] Multiple sets of through holes are opened on the side of the argon gas interface of the cover, which optimizes the flow path of argon gas, improves the uniformity of argon gas distribution, and thus enhances the coverage and protection effect of argon gas.

[0015] The shape of the cover cylinder is designed to fit snugly around the outer periphery of the tundish, making it highly adaptable and allowing for design to be tailored to different tundish shapes, thus ensuring the wide applicability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the argon gas interface structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly structure of an embodiment of the present utility model; Figure 5 This is a schematic diagram of the cover structure according to an embodiment of the present utility model.

[0017] In the diagram: 1. Cover; 2. Argon gas interface; 3. Argon gas pipe; 4. Conduit; 5. Argon gas nozzle; 6. Through hole; 7. Argon gas nozzle; 8. Operating port; 9. Concentrator. Detailed Implementation

[0018] To address the problem that traditional non-vacuum atomizing furnaces cannot effectively isolate oxygen, leading to easy contact between molten steel and oxygen during atomization and resulting in generally high oxygen content in the produced powder, this invention provides an argon gas protective cover for atomized powder production. The technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] Please see Figure 1-5 This utility model provides an argon gas protective cover for atomizing powder production, including a cover cylinder 1 sleeved on the outer periphery of an atomizing powder production intermediate package. The side of the cover cylinder 1 is connected to an argon gas pipe 3 via an argon gas interface 2, and the tail end of the argon gas interface 2 is connected to an argon gas nozzle 5 via a conduit 4. The argon gas nozzle 5 is located on the top wall of the cover cylinder 1, so that the argon gas pipe 3 blows argon gas through the argon gas nozzle 5 to surround the intermediate package. The lower part of the argon gas nozzle 5 is provided with multiple sets of argon gas nozzles 7, and the argon gas nozzles 7 are arranged facing the intermediate package side, so that the argon gas nozzles 7 blow argon gas towards the intermediate package side.

[0020] The shroud 1 has multiple sets of through holes 6 on the side of the argon inlet 2, allowing the argon pipe 3 to guide argon gas through the through holes 6 to the nozzle. An operation port 8 is provided at the front end of the shroud 1. The height of the shroud 1 below the operation port 8 is higher than that of the tundish, so that the argon gas settles and surrounds the outer periphery of the tundish. The shape of the shroud 1 is compatible with the tundish, so that the shroud 1 fits snugly over the outer periphery of the tundish.

[0021] A flow-concentrating hood 9 is provided between the conduit 4 and the side wall of the cover 1 so that the argon gas interface 2 can deliver argon gas to the conduit 4 through the flow-concentrating hood 9.

[0022] The working principle of the argon gas protective cover for atomizing powder production provided by this utility model is as follows: Argon gas enters the cover cylinder 1 from the argon gas interface 2 through the argon gas pipe 3, and then is transmitted to the argon gas nozzle 5 through the conduit 4. During the transmission process, the multiple sets of through holes 6 located on the side of the argon gas interface 2 of the cover cylinder 1 help to evenly guide the argon gas to the nozzle.

[0023] Argon nozzle 5 is located on the top wall of the casing 1, and multiple sets of argon nozzles 7 are arranged at its lower part, with these nozzles facing the tundish side. When argon reaches the argon nozzle 5, it will blow argon towards the tundish side through these nozzles, thereby forming an argon protective layer around the tundish.

[0024] The ejected argon gas forms a protective gaseous environment around the tundish, isolating the molten steel from the outside air and effectively preventing the molten steel from contacting oxygen during atomization, thereby reducing the oxygen content of the powder. Because argon is heavier than air, it settles around the tundish and forms a stable protective layer, further enhancing the protective effect.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective cover for argon gas in atomization powder making, characterized in that: It includes a cover (1) fitted around the outer periphery of the atomizing powder intermediate package. The side of the cover (1) is connected to the argon pipe (3) through the argon interface (2). The tail end of the argon interface (2) is connected to the argon nozzle (5) through the conduit (4). The argon nozzle (5) is located on the top wall of the cover (1) so that the argon pipe (3) blows argon through the argon nozzle (5) to surround the intermediate package.

2. The argon gas protective cover for atomizing powder production according to claim 1, characterized in that: The cover (1) has multiple sets of through holes (6) on the side of the argon gas interface (2) so that the argon gas pipe (3) can guide the argon gas to the nozzle through the through holes (6).

3. The argon gas protective cover for atomizing powder production according to claim 1, characterized in that: The lower part of the argon nozzle (5) is provided with multiple sets of argon nozzles (7), and the argon nozzles (7) are arranged facing the intermediate package side so that the argon nozzles (7) blow argon towards the intermediate package side.

4. The argon gas protective cover for atomizing powder production according to claim 1, characterized in that: The front end of the cover (1) is provided with an operation port (8) for operation.

5. The argon gas protective cover for atomizing powder production according to claim 4, characterized in that: The height of the shroud (1) below the operating port (8) is higher than that of the intermediate package, so that the argon gas settles and surrounds the outer periphery of the intermediate package.

6. The argon gas protective cover for atomizing powder production according to claim 1, characterized in that: A flow-concentrating hood (9) is provided between the conduit (4) and the side wall of the hood (1) so that the argon gas interface (2) can deliver argon gas to the conduit (4) through the flow-concentrating hood (9).

7. The argon gas protective cover for atomizing powder production according to claim 1, characterized in that: The shape of the cover (1) is matched with that of the intermediate bag so that the cover (1) fits and covers the outer periphery of the intermediate bag.

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