Tundish for improving safety of smelting and casting process of samarium-cobalt permanent magnet material

Abstract

The utility model relates to the technical field of rare earth permanent magnet material production equipment, and discloses a tundish for improving the safety of samarium cobalt permanent magnet material smelting and casting process, which comprises a tundish main body, a casting groove is arranged in the middle of the tundish main body, and the diameter of a top opening of the casting groove is larger than that of the bottom of the casting groove. And two flow guide grooves are formed in the right side of the tundish main body. According to the utility model, the drainage effect of the diversion trench can be further enhanced through the connecting block and the drainage trench, so that the effects that alloy liquid is deviated to a copper plate, the copper plate is damaged or punctured, high-temperature alloy liquid is contacted with cooling water, the alloy is scrapped, and even the induction furnace explodes are avoided; the structure stress is reduced, the problem that small aluminum oxide blocks are stripped due to cold and hot impact in the repeated use process of the tundish is weakened, and the situation that high-temperature alloy liquid does not flow into a casting groove along a straight line any more and is extremely prone to deviating and impacting a copper plate, and safety accidents happen is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to rare earth permanent magnet material production equipment technical field especially relates to a kind of intermediate ladle of promoting samarium-cobalt permanent magnet material smelting casting process security. BACKGROUND

[0002] 2:17 samarium-cobalt permanent magnet material is manufactured using traditional powder metallurgy method, and its main production links include: batching-vacuum induction smelting-powder making-molding-sintering-aging, and smelting procedure is one of key procedures, and its main process is: placing prepared samarium, cobalt, copper, iron, zirconium and other raw materials in vacuum induction smelting furnace crucible according to certain order, heating in vacuum state to degas, then filling in inert gas, under inert gas protection, heating power is promoted, raw materials are converted into liquid and high-temperature refining for a period of time, then rotating crucible, pouring alloy liquid into intermediate ladle, and alloy liquid is guided into two water-cooled ingot molds for rapid cooling.

[0003] Intermediate ladle is made of high-density aluminum oxide, and it has the characteristics of high temperature resistance and certain samarium-cobalt alloy corrosion resistance, but its strength is not too high, and small pieces of aluminum oxide are easily stripped from the outer part of the two flow guide grooves of the intermediate ladle after multiple uses due to the scouring of high-temperature alloy liquid. When used again, the high-temperature alloy liquid no longer flows in a straight line into the ingot mold and is easily deviated and impacts on the copper plate, which may damage the copper plate, or even directly pierce the copper plate, so that the high-temperature alloy liquid comes into contact with the cooling water, resulting in alloy scrap and even safety accidents such as explosion of the induction furnace. Moreover, due to the structure limitation, the outer edge of the flow guide groove is not smooth, and small pieces of aluminum oxide are inevitably stripped from the outer part of the flow guide groove during repeated use of the intermediate ladle under high and low temperature. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the shortcomings in the prior art and provides an intermediate ladle for improving the smelting and casting process safety of samarium-cobalt permanent magnet material.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides an intermediate ladle for improving the smelting and casting process safety of samarium-cobalt permanent magnet material, which comprises an intermediate ladle body, a casting groove is formed in the middle of the intermediate ladle body, the diameter of the top opening of the casting groove is larger than the diameter of the bottom, two flow guide grooves are formed in the right side of the intermediate ladle body, and the flow guide grooves are communicated with the casting groove.

[0007] As a further scheme of the utility model, a connecting block is arranged on the right side of the intermediate ladle body, the connecting block is arranged at the position corresponding to the flow guide groove, the connecting block is fixedly welded on the intermediate ladle body, a flow guide groove is formed in the connecting block, and the flow guide groove is aligned and communicated with the flow guide groove.

[0008] As a further scheme of the utility model, the top of the connecting block is in a circular arc structure.

[0009] As a further scheme of the utility model, the material of the intermediate ladle body and the connecting block is high-density aluminum oxide.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] In the utility model, the connecting block and the drainage groove can further enhance the drainage effect of the drainage groove, avoid the alloy liquid from deviating to the copper plate, damage or break the copper plate, make the high-temperature alloy liquid contact with the cooling water, cause the alloy to be scrapped or even cause the induction furnace to explode, reduce the structural stress due to the circular arc structure of the top of the connecting block, weaken the problem of the small piece of aluminum oxide peeling off due to the cold and hot impact in the repeated use process of the intermediate ladle, avoid the high-temperature alloy liquid from flowing along the straight line to the casting groove, and the high-temperature alloy liquid is easy to deviate and impact on the copper plate, and the effect of causing a safety accident is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model provides an overall structure schematic diagram of the intermediate ladle for improving the smelting and casting process safety of the samarium-cobalt permanent magnet material;

[0013] Figure 2 The utility model provides a split structure schematic diagram of the intermediate ladle for improving the smelting and casting process safety of the samarium-cobalt permanent magnet material;

[0014] Figure 3 The utility model provides a top view of the intermediate ladle for improving the smelting and casting process safety of the samarium-cobalt permanent magnet material;

[0015] Figure 4 The utility model provides a sectional view of the intermediate ladle for improving the smelting and casting process safety of the samarium-cobalt permanent magnet material.

[0016] In the drawing: 1, intermediate ladle body; 2, casting groove; 3, connecting block; 4, drainage groove; 5, drainage groove. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0020] Reference Figure 1 - Figure 4 A tundish for improving the safety of the smelting and casting process of samarium-cobalt permanent magnet materials includes a tundish body 1, a casting trough 2 is provided in the middle of the tundish body 1, the diameter of the top opening of the casting trough 2 is larger than the diameter of the bottom, and two guide grooves 5 are provided on the right side of the tundish body 1, which are connected to the casting trough 2.

[0021] In this embodiment, a connecting block 3 is provided on the right side of the ladle body 1. The connecting block 3 is provided at the position corresponding to the guide groove 5. The connecting block 3 is fixedly welded to the ladle body 1. A guide groove 4 is provided on the connecting block 3. The guide groove 4 is aligned and connected with the guide groove 5. The guide length of the guide groove 5 is extended outward through the guide groove 4 on the connecting block 3, further enhancing the drainage effect of the guide groove 5 and preventing the alloy liquid from deviating to the copper plate and damaging or piercing the copper plate.

[0022] In this embodiment, the top of the connecting block 3 is in an arc-shaped structure. Since the top of the connecting block 3 adopts an arc-shaped structure, the structural stress is reduced and the problem of small pieces of alumina peeling off due to hot and cold shock during repeated use of the ladle is weakened.

[0023] In this embodiment, the material of the tundish body 1 and the connecting block 3 is high-density alumina, which has the characteristics of high temperature resistance and certain resistance to samarium-cobalt alloy corrosion.

[0024] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: when using, the device is fixed to the vacuum induction melting furnace, then the alloy liquid is cast into the casting groove 2 through the drainage groove 4 on the connecting block 3, the flow guiding length of the flow guiding groove 5 is extended outward through the drainage groove 4 on the connecting block 3, the drainage effect of the flow guiding groove 5 is further enhanced, the alloy liquid is prevented from deviating to the copper plate, the copper plate is prevented from being damaged or broken, the high-temperature alloy liquid is prevented from contacting with the cooling water, the alloy is prevented from being scrapped and even the induction furnace is prevented from exploding, meanwhile, since the top of the connecting block 3 adopts the circular arc structure, the structural stress is reduced, the small piece of alumina caused by the cold and hot impact during the repeated use of the tundish is peeled off, the high-temperature alloy liquid is prevented from flowing along the straight line to the casting groove 2, the high-temperature alloy liquid is prevented from deviating easily and impacting on the copper plate, and the safety accident is prevented.

[0025] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. A tundish for improving safety in a smelting and casting process of a samarium-cobalt permanent magnet material, comprising a tundish main body (1), characterized in that, The intermediate opening of the intermediate ladle body (1) is provided with a casting groove (2), the diameter of the top opening of the casting groove (2) is greater than the diameter of the bottom, the right side of the intermediate ladle body (1) is provided with two flow guide grooves (5), the flow guide grooves (5) are communicated with the casting groove (2), the right side of the intermediate ladle body (1) is provided with a connecting block (3), the connecting block (3) is arranged at the position corresponding to the flow guide groove (5), the connecting block (3) is fixedly welded on the intermediate ladle body (1), the connecting block (3) is provided with a flow guide groove (4), the flow guide groove (4) is aligned and communicated with the flow guide groove (5), and the top of the connecting block (3) is in a circular arc structure.

2. The tundish for improving safety of a smelting and casting process of a samarium-cobalt permanent magnet material according to claim 1, characterized in that, The material of the intermediate ladle body (1) and the connecting block (3) is high-density aluminum oxide.

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