Protective casting device for preventing rare earth steel from being oxidized

Abstract

The utility model discloses a protective casting device for preventing rare earth steel from being oxidized, which relates to the technical field of rare earth steel casting and comprises an annular seat, an air guide pipe, a mounting component and an annular opening plate. An air cavity is formed in the annular seat, and an air hole communicated with the air cavity is formed in the upper surface of the annular seat; a gas guide pipe communicated with the gas cavity is arranged on one side of the annular seat and is used for being communicated with external inert gas, so that the inert gas forms a gas curtain after being sprayed out through the gas holes; an annular opening plate is movably arranged on the annular seat through an installation assembly, through holes corresponding to the air holes are formed in the upper surface of the annular opening plate, the air holes are opened after the through holes coincide with the air holes, and the air holes are closed after the through holes and the air holes are staggered. In the rare earth steel casting process, the device can be matched with inert gas to form an air curtain for effectively isolating air around the water gap, it is guaranteed that rare earth steel is safely cast in the inert gas atmosphere, and the use value is high.

Description

Technical Field

[0001] The utility model relates to the technical field of rare earth steel casting, in particular to a protective casting device for preventing rare earth steel from being oxidized. Background Art

[0002] Rare earth steel is steel containing a certain amount of rare earth elements. The research, development, and application of rare earth steel aims to improve its corrosion resistance, wear resistance, and drawability. The research, development, and application of rare earth steel have achieved remarkable success worldwide.

[0003] During the continuous casting of rare earth steel on-site, the flow rate of molten steel from the large ladle to the medium ladle is controlled by adjusting the opening degree of the sliding nozzle. However, since the gaps between the upper nozzle and the sliding nozzle, and between the sliding nozzle and the lower nozzle, are not completely sealed, oxygen in the air easily passes through these gaps and combines with the rare earth elements to form oxides when casting the highly oxidizable rare earth steel. These oxides continuously accumulate and form nodules, reducing the flow rate of the nozzles (upper nozzle, sliding nozzle, and lower nozzle), eventually causing them to become clogged, resulting in production interruptions and the inability to ensure continuous casting of rare earth steel. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a protective casting device for preventing rare earth steel from being oxidized.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A protective casting device for preventing rare earth steel from being oxidized comprises an annular seat, an air guide tube, a mounting assembly and an annular opening plate; an air cavity is provided in the annular seat, and an air hole connected to the air cavity is provided on the upper surface of the annular seat; an air guide tube connected to the air cavity is provided on one side of the annular seat, and the air guide tube is used to communicate with external inert gas so that the inert gas forms an air curtain after being ejected through the air hole; an annular opening plate is movably provided on the annular seat through the mounting assembly, and a through hole corresponding to the air hole is provided on the upper surface of the annular opening plate, and the air hole is opened when the through hole and the air hole are overlapped, and the air hole is closed when the through hole and the air hole are misaligned.

[0007] Furthermore, the mounting assembly includes a first annular plate and a second annular plate; the first annular plate and the second annular plate are arranged on the upper surface of the annular seat, and a movable cavity that matches the size of the annular opening plate is formed between the first annular plate and the second annular plate, and the annular opening plate is installed in the movable cavity so that the annular opening plate can rotate.

[0008] Furthermore, the mounting assembly further includes a handle; the handle is connected to the annular opening plate, and the annular opening plate can be rotated in the movable cavity by operating the handle, thereby facilitating the user's operation of the annular opening plate.

[0009] Furthermore, the mounting assembly also includes a movable groove; the movable groove is arranged on the first annular plate, and the handle is placed in the movable groove, so that when the handle contacts one end of the movable groove, the positions of the through hole and the air hole coincide, and when the handle contacts the other end of the movable groove, the positions of the through hole and the air hole are misaligned, thereby improving the user's operating efficiency of the annular opening plate.

[0010] Furthermore, the first annular plate and the second annular plate are welded to the upper surface of the annular seat.

[0011] Furthermore, the air holes are arranged circumferentially on the upper surface of the annular seat to improve the formation effect of the air curtain.

[0012] Furthermore, the annular seat is formed by welding a plurality of steel plates together to improve its sealing effect.

[0013] Furthermore, the annular seat is welded to the connection of the air guide tube to prevent leakage of the inert gas.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is equipped with an annular seat, an air guide tube, a mounting assembly and an annular opening plate, and then connected to an external inert gas, so that during the casting process of rare earth steel, the inert gas forms an air curtain that can effectively isolate the air around the nozzle, ensuring that rare earth steel is safely cast in an inert gas atmosphere.

[0016] 2. The utility model has a simple structure. The annular opening plate can block the air holes on the annular seat to prevent impurities from entering and causing blockage, which affects the use effect. The annular opening plate can be easily installed and removed from the annular seat, which is convenient for subsequent cleaning and maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0020] Figure 4 It is a three-dimensional diagram of the annular seat;

[0021] Figure 5 It is a structural diagram of the installation components;

[0022] Figure 6 Schematic diagram of the structure of the annular opening plate;

[0023] Among them: 1. annular seat; 11. air cavity; 12. air hole; 2. air guide tube; 3. mounting assembly; 31. first annular plate; 311. movable groove; 32. second annular plate; 33. handle; 4. annular opening plate; 41. through hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0025] Refer to the attached Figure 1 -Attached Figure 6 As shown, a protective casting device for preventing rare earth steel from oxidation includes an annular seat 1, an air guide tube 2, a mounting assembly 3 and an annular opening plate 4;

[0026] Among them, an air cavity 11 is provided in the annular seat 1, and an air hole 12 connected to the air cavity 11 is provided on the circumference of the upper surface of the annular seat 1; an air guide pipe 2 connected to the air cavity 11 is provided on one side of the annular seat 1, and the air guide pipe 2 is used to communicate with the external inert gas, so that the inert gas can form an air curtain after being ejected through the air hole 12, which can effectively isolate the air around the water inlet and ensure the safe casting of rare earth steel in an inert gas atmosphere; an annular opening plate 4 is movably provided on the annular seat 1 through the mounting component 3, and a through hole 41 corresponding to the air hole 12 is provided on the circumference of the upper surface of the annular opening plate 4. When the through hole 41 coincides with the air hole 12, the air hole 12 is open. At this time, the device can be used normally. When the through hole 41 and the air hole 12 are misaligned, the air hole 12 is closed. At this time, the annular opening plate 4 can effectively block the air hole 12 to prevent impurities from entering and causing blockage.

[0027] Specifically, for the above solution, the specific structure of the annular seat 1 is as follows:

[0028] Refer to the attached Figure 4 As shown, the annular seat 1 is welded together by multiple steel plates to improve its sealing effect; and the connection between the annular seat 1 and the air guide tube 2 is welded to prevent inert gas leakage.

[0029] Specifically, for the above solution, the specific structure of the installation component 3 is as follows:

[0030] Refer to the attached Figure 1 , Attachment Figure 3 and attached Figure 5As shown, the mounting assembly 3 includes a first annular plate 31 and a second annular plate 32; the first annular plate 31 and the second annular plate 32 are welded to the upper surface of the annular seat 1, and a movable cavity that matches the size of the annular opening plate 4 is formed between the first annular plate 31 and the second annular plate 32. The annular opening plate 4 is installed in the movable cavity so that the annular opening plate 4 can rotate;

[0031] In order to facilitate the user's operation of the annular opening plate 4, the mounting assembly 3 further includes a handle 33. The handle 33 is connected to the annular opening plate 4, and the annular opening plate 4 can be rotated in the movable cavity by operating the handle 33.

[0032] In addition, considering that the user can quickly complete the overlap or misalignment of the positions of the through hole 41 and the air hole 12 on the annular opening plate 4, the mounting assembly 3 also includes a movable groove 311; the movable groove 311 is arranged on the first annular plate 31, and the handle 33 is placed in the movable groove 311, so that when the handle 33 contacts one end of the movable groove 311, the positions of the through hole 41 and the air hole 12 coincide, and when the handle 33 contacts the other end of the movable groove 311, the positions of the through hole 41 and the air hole 12 are misaligned.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective casting device for preventing rare earth steel from oxidation, characterized in that: It comprises an annular seat (1), an air guide tube (2), a mounting assembly (3) and an annular opening plate (4); An air cavity (11) is provided in the annular seat (1), and an air hole (12) communicating with the air cavity (11) is provided on the upper surface of the annular seat (1); An air guide tube (2) communicating with the air cavity (11) is provided on one side of the annular seat (1). The air guide tube (2) is used to communicate with external inert gas so that the inert gas is ejected through the air hole (12) to form an air curtain. An annular opening plate (4) is movably provided on the annular seat (1) via a mounting assembly (3). A through hole (41) corresponding to the air hole (12) is provided on the upper surface of the annular opening plate (4). When the through hole (41) and the air hole (12) are overlapped, the air hole (12) is opened. When the through hole (41) and the air hole (12) are misaligned, the air hole (12) is closed.

2. A protective casting device for preventing rare earth steel from oxidation according to claim 1, characterized in that: The mounting assembly (3) comprises a first annular plate (31) and a second annular plate (32); The first annular plate (31) and the second annular plate (32) are arranged on the upper surface of the annular seat (1), and a movable cavity having a size matching that of the annular opening plate (4) is formed between the first annular plate (31) and the second annular plate (32). The annular opening plate (4) is installed in the movable cavity so that the annular opening plate (4) can rotate.

3. A protective casting device for preventing rare earth steel from oxidation according to claim 2, characterized in that: The mounting assembly (3) further includes a handle (33); The handle (33) is connected to the annular opening plate (4) so ​​that the operating handle (33) causes the annular opening plate (4) to rotate in the movable cavity.

4. A protective casting device for preventing rare earth steel from oxidation according to claim 3, characterized in that: The mounting assembly (3) further includes a movable slot (311); The movable groove (311) is provided on the first annular plate (31), and the handle (33) is placed in the movable groove (311), so that when one end of the handle (33) contacts the movable groove (311), the positions of the through hole (41) and the air hole (12) coincide, and when the other end of the handle (33) contacts the movable groove (311), the positions of the through hole (41) and the air hole (12) are misaligned.

5. The protective casting device for preventing rare earth steel from oxidation according to claim 2, characterized in that: The first annular plate (31) and the second annular plate (32) are welded to the upper surface of the annular seat (1).

6. The protective casting device for preventing rare earth steel from oxidation according to claim 1, characterized in that: The air holes (12) are circumferentially arranged on the upper surface of the annular seat (1).

7. The protective casting device for preventing rare earth steel from oxidation according to claim 1, characterized in that: The annular seat (1) is formed by welding a plurality of steel plates.

8. The protective casting device for preventing rare earth steel from oxidation according to claim 1, characterized in that: The annular seat (1) and the air guide pipe (2) are welded at their connection points.

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