Round material nozzle of magnesium alloy conveying pipe

Abstract

The utility model discloses a magnesium alloy material conveying pipe round material nozzle which comprises a round material nozzle welding head, a round material cup cover is installed at one end of the round material nozzle welding head, a nitrogen pipe connector is installed outside the round material cup cover, and a material cup welding pipe is welded to the side wall of the round material nozzle welding head. A material nozzle butt flange is arranged at the end, away from the round material nozzle welding head, of the material cup welding pipe, a plurality of cooling fins are evenly distributed on the outer wall of the material cup welding pipe, a spiral flow guide groove is formed in the inner wall of the round material nozzle welding head, and the spiral flow guide groove extends to a discharging port of the round material nozzle welding head. The spiral flow guide groove is formed in the round nozzle welding head, flowing of molten metal can be accelerated, heat accumulation can be reduced, meanwhile, the heat dissipation fins are arranged outside the material cup welding pipe, outward heat dissipation of the material cup welding pipe can be accelerated, local overheating is avoided, and the using stability and durability of the whole nozzle are improved.

Description

Technical Field

[0001] This utility model relates to the field of casting and processing technology, and in particular to the round nozzle of magnesium alloy feed pipe. Background Technology

[0002] In the casting or die-casting process of magnesium alloys, high-temperature molten magnesium alloy needs to be transported from the furnace to the mold through a feed pipe. However, the nozzle of the existing feed pipe is difficult to guide the molten metal quickly during use, which can easily cause local overheating in the nozzle and thus affect the stability of the weld. There is room for improvement.

[0003] Therefore, we propose a magnesium alloy feed pipe round nozzle to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a round nozzle for a magnesium alloy feed pipe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A magnesium alloy feed pipe with a round nozzle includes a round nozzle welding head. One end of the round nozzle welding head is fitted with a round material cup cover, and a nitrogen pipe connector is installed outside the round material cup cover. A material cup welding tube is welded to the side wall of the round nozzle welding head, and a nozzle docking flange is provided at the end of the material cup welding tube away from the round nozzle welding head. Several heat dissipation fins are evenly distributed on the outer wall of the material cup welding tube. A spiral guide groove is formed on the inner wall of the round nozzle welding head, and the spiral guide groove extends to the outlet of the round nozzle welding head.

[0007] In a further embodiment, a portion of the round material cup lid is screwed into the port of the round material nozzle welding head, and a sealing gasket is connected between the contact surfaces of the round material cup lid and the round material nozzle welding head.

[0008] In a further embodiment, the nitrogen pipe connector and the round material cup lid are interference-fitted.

[0009] In a further embodiment, the nozzle connecting flange has a flared structure at its interface.

[0010] In a further embodiment, a high-temperature resistant silicone ring is embedded on the inclined sidewall of the flared interface of the nozzle docking flange.

[0011] In a further embodiment, a copper gasket is connected to the flat wall of the flared interface of the nozzle flange.

[0012] In a further embodiment, both the round nozzle welding head and the inner wall of the cup welding tube are provided with a reinforcing coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention accelerates the flow of molten metal and reduces heat accumulation by setting a spiral guide groove inside the welding head of the round nozzle. At the same time, the heat dissipation fins set on the outside of the welding tube of the material cup can accelerate the heat dissipation of the welding tube of the material cup, thereby avoiding local overheating and improving the overall stability and durability of the nozzle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the welding tube for the material cup of this utility model.

[0018] In the diagram: 1. Round nozzle welding head; 11. Spiral guide groove; 2. Round material cup lid; 3. Nitrogen pipe connector; 4. Material cup welding pipe; 41. Heat dissipation fins; 5. Nozzle mating flange; 6. High-temperature resistant silicone ring; 7. Copper gasket; 8. Reinforced coating; 9. Sealing gasket. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 The magnesium alloy feed pipe includes a round feed nozzle, which has a round feed nozzle welding head 1. The inner wall of the round feed nozzle welding head 1 is provided with a spiral guide groove 11, which extends to the outlet of the round feed nozzle welding head 1. This can accelerate the flow of molten metal and reduce heat accumulation. A round feed cup cover 2 is installed at one end of the round feed nozzle welding head 1. The round feed cup cover 2 adopts a double-layer disc structure. The smaller disc part is screwed into the port of the round feed nozzle welding head 1 by a spiral action, making it easy to disassemble and assemble the two. In order to improve the sealing of the connection between the two, the larger disc of the round feed cup cover 2 is left outside the interface of the round feed nozzle welding head 1, and a sealing gasket 9 is sandwiched between the contact surface with the round feed nozzle welding head 1. A nitrogen pipe connector 3 is interference-fitted to the outside of the round feed cup cover 2. The nitrogen pipe connector 3 is used to connect to an external gas source. Before the molten magnesium alloy flows, nitrogen is introduced into the feed nozzle for 5-10 minutes in advance to expel oxygen in the pipeline and form an inert gas protective layer to reduce the oxidation of molten metal.

[0023] A material cup welding tube 4 is welded to the side wall of the round material nozzle welding head 1. Several heat dissipation fins 41 are evenly distributed on the outer wall of the material cup welding tube 4. The heat dissipation fins 41 can accelerate the heat dissipation to the outside, thereby avoiding local overheating. A material nozzle docking flange 5 is provided at the end of the material cup welding tube 4 away from the round material nozzle welding head 1.

[0024] To improve the stability of the connection between the nozzle flange 5 and the conveying pipe, the nozzle flange 5 is designed with a flared structure at the interface, which can reduce stress concentration and improve welding reliability. At the same time, a high-temperature resistant silicone ring 6 is embedded on the inclined side wall of the flared interface of the nozzle flange 5, and a copper gasket 7 is connected to the flat wall of the flared interface of the nozzle flange 5 to enhance the leak-proof capability of the connection.

[0025] Both the inner walls of the round nozzle welding head 1 and the material cup welding tube 4 are provided with a reinforcing coating 8. The reinforcing coating 8 adopts a ceramic coating or tungsten carbide plating, which can improve the wear resistance and high temperature oxidation resistance of the nozzle.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnesium alloy feed pipe round nozzle, including a round nozzle welding head (1), characterized in that: One end of the round nozzle welding head (1) is equipped with a round material cup cover (2), and a nitrogen pipe connector (3) is installed on the outside of the round material cup cover (2). A material cup welding tube (4) is welded on the side wall of the round nozzle welding head (1), and a material cup welding tube (4) is provided at the end of the material cup welding tube (4) away from the round nozzle welding head (1). Several heat dissipation fins (41) are evenly distributed on the outer wall of the material cup welding tube (4). A spiral guide groove (11) is opened on the inner wall of the round nozzle welding head (1), and the spiral guide groove (11) extends to the outlet of the round nozzle welding head (1).

2. The magnesium alloy feed pipe round nozzle according to claim 1, characterized in that: Part of the round material cup lid (2) is screwed into the port of the round material nozzle welding head (1), and a sealing gasket (9) is connected between the contact surfaces of the round material cup lid (2) and the round material nozzle welding head (1).

3. The magnesium alloy feed pipe round nozzle according to claim 1, characterized in that: The nitrogen pipe connector (3) and the round cup lid (2) are connected by an interference fit.

4. The magnesium alloy feed pipe round nozzle according to claim 1, characterized in that: The nozzle flange (5) has a flared structure at its interface.

5. The magnesium alloy feed pipe round nozzle according to claim 4, characterized in that: A high-temperature resistant silicone ring (6) is embedded on the inclined side wall of the flared interface of the nozzle connecting flange (5).

6. The magnesium alloy feed pipe round nozzle according to claim 4, characterized in that: A copper gasket (7) is connected to the flat wall of the flared interface of the nozzle flange (5).

7. The magnesium alloy feed pipe round nozzle according to claim 1, characterized in that: The inner walls of the round nozzle welding head (1) and the cup welding tube (4) are both provided with a reinforcing coating (8).

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