CN218566143U

CN218566143U - Assembled crucible

Info

Publication number: CN218566143U
Application number: CN202223061391.7U
Authority: CN
Inventors: 张劲; 郑英
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-03
Anticipated expiration: 2032-11-17

Abstract

The utility model belongs to the field of metal melting, specifically relate to an assembled crucible, including the crucible main part, the crucible main part internal surface holds the molten metal part and covers totally and has the protective layer, the protective layer is formed by the concatenation of polylith solid material, still is provided with flexible temperature resistant corrosion resistant layer between protective layer and the crucible main part internal surface, through holding partial complete cover at the crucible main part internal surface and having the protective layer, and the protective layer is formed by the concatenation of polylith solid material, after selecting the material of crucible main part and protective layer, can satisfy simultaneously corrosion-resistant, high temperature resistant, non-staining molten metal on the whole, do not ftracture, long-life, characteristics such as intensity height, can realize large size production preparation simultaneously, the protective layer only need provide key properties such as high temperature resistant, high corrosion resistant and high-purity; the crucible main body provides support strength and high temperature resistance, and the indexes such as corrosion resistance, high purity and the like can meet common requirements because the crucible main body is not in direct contact with molten metal, so that the overall cost can be greatly reduced.

Description

Assembled crucible

Technical Field

The utility model belongs to the metal melting field specifically relates to an assembled crucible.

Background

Some metal melting has the characteristic of high corrosivity, and the requirement of purity is existed in the melting process, so that at present, it is best to meet the requirements of corrosion resistance, high temperature resistance, no pollution to molten metal, no cracking, long service life, high strength and the like for the material for receiving molten metal, and it is difficult to actually meet the above-mentioned characteristics at the same time, especially when the size is large (more than 3 tons), it is difficult to meet the above-mentioned requirements, for example, under the condition of containing active metal melt like lithium, the crucible has almost no material which can directly meet the requirements of large size and large specification. Under certain conditions, even materials capable of obtaining the performances have higher cost and small engineering significance.

Although there are proposals for solving the problem of small size of the combined crucible, for example, the chinese patent "CN 1995884-combined pyrolytic boron nitride crucible lining". However, with this method, only the problem of crucible size is solved, and other basic performance requirements such as cracking and liquid leakage prevention, structural strength and the like are not well considered.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an assembled crucible that can satisfy multiple performance demand simultaneously and can dispose to the large size.

The utility model discloses a content includes the crucible main part, crucible main part internal surface dress molten metal part full cover has the protective layer, the protective layer forms for the concatenation of polylith solid material, still is provided with flexible temperature resistant corrosion resistant layer between protective layer and the crucible main part internal surface.

Further, the flexible temperature-resistant corrosion-resistant layer is arranged between the protective layer and the inner surface of the crucible main body in a full-covering mode.

Furthermore, the flexible temperature-resistant and corrosion-resistant layer is a whole cloth.

Furthermore, the flexible temperature-resistant corrosion-resistant layer is made of aluminum silicate cotton, asbestos or carbon felt.

Further, the flexible temperature-resistant and corrosion-resistant layer is arranged at the joints of the solid materials.

Furthermore, a concave-convex positioning structure is arranged at the splicing position of the solid materials, and a flexible temperature-resistant corrosion-resistant pad is arranged in the concave-convex positioning structure.

Further, the plurality of pieces of solid material is graphite, ceramic, or silicon carbide.

Furthermore, the plurality of solid materials are matched with the crucible main body through screws, and flexible temperature-resistant corrosion-resistant pads are arranged between the screws and the solid materials and between the contact parts of the screws and the crucible main body.

Furthermore, a through hole matched with the screw is formed in the crucible main body, and a nut is arranged on one side, away from the protective layer, of the through hole.

Furthermore, a countersunk hole is formed in the solid material at the bottom of the crucible main body, the screw is arranged in the countersunk hole, and the crucible further comprises a sealing cover arranged on the countersunk hole, and the sealing cover is flush with the solid material at the bottom.

The utility model has the advantages that the utility model discloses a partial full coverability of molten metal portion is adorned at the internal surface of crucible main part is covered with the protective layer to the protective layer is formed by the concatenation of polylith solid material, after selecting the material of crucible main part and protective layer, can satisfy corrosion-resistant, high temperature resistant, non-staining molten metal, performance characteristics such as non-cracking, long-life, intensity height simultaneously on the whole, can realize large size production preparation simultaneously, the protective layer only need provide key performance such as high temperature resistant, high corrosion-resistant and high-purity; the crucible main body provides support strength and high temperature resistance, and the crucible main body is not in direct contact with molten metal, so that the indexes such as corrosion resistance, high purity and the like are general, and the overall cost can be greatly reduced. In addition, in this embodiment, still through being provided with flexible temperature resistant corrosion resistant layer between protective layer and crucible main part internal surface, can solve polylith solid material seam crossing weeping, influence this problem of life, can avoid crucible main part fracture simultaneously, make the problem that the molten metal oozes.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1-crucible body; 11-a through hole; 2-a protective layer; 21-countersunk hole; 3-flexible temperature-resistant corrosion-resistant layer; 4-screws; 5-flexible temperature-resistant corrosion-resistant pad; 6-a nut; 7-sealing the cover.

Detailed Description

As shown in figure 1, the utility model discloses a crucible main part 1, 1 internal surface of crucible main part holds dress molten metal part and covers totally has protective layer 2, protective layer 2 forms for the concatenation of polylith solid material, still is provided with flexible temperature resistant corrosion resistant layer 3 between protective layer 2 and the 1 internal surface of crucible main part.

Some metal melting have high corrosive characteristic, and there is a requirement for purity in the melting process, therefore, at present, it is better to meet the characteristics of corrosion resistance, high temperature resistance, no molten metal pollution, no cracking, long life, high strength, etc. at the same time for the material to bear the molten metal, and it is difficult to meet the above characteristics at the same time in fact, especially when the size is large (more than 3 tons), it is very difficult to meet, for example, under the condition of containing the active metal melt like lithium, there is almost no material that can directly meet the requirement for manufacturing large-size large-scale crucible, therefore, the utility model discloses through bearing the molten metal part in the inner surface of the crucible main body 1 and fully covering the protective layer 2, and the protective layer is spliced by multiple solid materials, can realize the above performance characteristic at the same time, can realize the production preparation of large size, in addition, the crucible main body 1 is used for supporting the outward force of molten metal, the protective layer 2 is used for bearing the molten metal, therefore, the protective layer 2 provides the key characteristics such as high temperature resistance, high corrosion resistance and high purity; the crucible body 1 has the characteristics of supporting strength, high temperature resistance and the like, and the indexes such as corrosion resistance, high purity and the like can meet general requirements because the crucible body is not in direct contact with molten metal, so that the overall cost can be greatly reduced. In addition, in this embodiment, still through being provided with flexible temperature resistant corrosion resistant layer 3 between protective layer 2 and crucible main body 1 internal surface, can solve polylith solid material seam crossing weeping, influence this problem of life, can avoid crucible main body 1 fracture simultaneously, make the problem that the molten metal oozes.

The flexible temperature-resistant corrosion-resistant layer 3 is arranged between the protective layer 2 and the inner surface of the crucible main body 1 in a full-covering mode, so that the cracking of the crucible main body 1 can be well avoided, the problem of molten metal seepage is solved, and potential safety hazards are greatly eliminated. Specifically, the flexible temperature-resistant corrosion-resistant layer 3 is a whole cloth, and the material thereof is preferably aluminum silicate cotton, asbestos or carbon felt.

Flexible temperature resistant corrosion resistant layer 3 sets up in polylith solid material seam crossing, in this embodiment, can reduce cost to a certain extent, avoids polylith solid material's seam crossing sepage, effectively avoids 1 part of crucible main part of seam crossing to be heated for a long time, the cooling meets the end and leads to the risk of fracture, in this embodiment, only increases few flexible temperature resistant corrosion resistant layer 3 and can improve holistic life.

The splicing part of the solid materials is provided with a concave-convex positioning structure, and a flexible temperature-resistant corrosion-resistant pad 5 is arranged in the concave-convex positioning structure. Effectively avoid seam crossing weeping, improve the fastening nature of connecting simultaneously, reduce the clearance of seam crossing.

The multi-block solid material is graphite, ceramic or silicon carbide, preferably made of graphite, has good high temperature resistance and corrosion resistance, does not pollute molten metal, is convenient for block splicing, and is convenient for the configuration of the matching holes of the screws 4.

The crucible is characterized in that the plurality of solid materials are matched with the crucible main body 1 through screws 4, and flexible temperature-resistant corrosion-resistant pads 5 are arranged between the screws 4 and the solid materials and between the screws 4 and the crucible main body 1, so that partial liquid seepage of the screws 4 is avoided, and the sealing effect is improved.

The crucible body 1 is provided with the through hole 11 matched with the screw 4, and the nut 6 is arranged on one side of the through hole 11, which is far away from the protective layer 2, in the embodiment, the matching of the protective layer 2 and the crucible body 1 can be completed only by arranging a counter bore without arranging a threaded hole on the wall of the crucible body 1, so that the production difficulty of the crucible body is reduced, in the embodiment, the crucible body 1 can be made of a light alumina silica composite material, light alumina, graphite and silicon carbide, and the materials generally have comprehensive heat-force performance, better strength and better heat cracking resistance; when the crucible main body is manufactured, fabrics, net-shaped reinforcing ribs and the like can be added to the crucible main body to improve the heat-cracking resistance. The key point is that the material is easy to obtain, can be made into large-size components and is mature industrial grade material.

Be provided with counter sink 21 on the solid material that is located crucible main body 1 bottom, screw 4 sets up in counter sink 21, still including setting up closing cap 7 on counter sink 21, closing cap 7 and the solid material parallel and level of bottom to this guarantees that protective layer 2 bottom is smooth, avoids the molten metal to be detained.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is merely exemplary and is not intended to suggest that the scope of the application is limited to these examples; within the context of the present application, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments in the present application as described above, which are not provided in detail for the sake of brevity.

It is intended that the one or more embodiments of the present application cover all such alternatives, modifications, and variations as fall within the broad scope of the present application. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present application are intended to be included within the scope of the present application.

Claims

1. The utility model provides an assembled crucible, characterized by includes crucible main part (1), crucible main part (1) internal surface holds the partial complete cover of dress molten metal and has protective layer (2), protective layer (2) are formed for the concatenation of polylith solid material, still are provided with flexible temperature resistant corrosion resistant layer (3) between protective layer (2) and crucible main part (1) internal surface.

2. The fabricated crucible according to claim 1, wherein the flexible temperature and corrosion resistant layer (3) is disposed between the protective layer (2) and the inner surface of the crucible main body (1) in a full-covering manner.

3. -fabricated crucible according to claim 2, characterized in that the flexible temperature and corrosion resistant layer (3) is a monolithic piece of cloth.

4. The fabricated crucible according to claim 3, wherein the flexible temperature-resistant corrosion-resistant layer (3) is made of aluminum silicate cotton, asbestos or carbon felt.

5. -fabricated crucible according to claim 1, characterized in that the flexible temperature and corrosion resistant layer (3) is provided at the joints of the pieces of solid material.

6. The fabricated crucible of claim 1, wherein the joint of the solid materials is provided with a concave-convex positioning structure, and a flexible temperature-resistant corrosion-resistant pad (5) is arranged in the concave-convex positioning structure.

7. The fabricated crucible of claim 1, wherein the plurality of pieces of solid material is graphite or ceramic.

8. The fabricated crucible according to claim 1, wherein a plurality of solid materials are matched with the crucible main body (1) through screws (4), and flexible temperature-resistant corrosion-resistant pads (5) are arranged between the contact parts of the screws (4) and the solid materials and between the contact parts of the screws (4) and the crucible main body (1).

9. The fabricated crucible according to claim 8, wherein the crucible body (1) is provided with a through hole (11) matched with the screw (4), and one side of the through hole (11) departing from the protective layer (2) is provided with a nut (6).

10. Assembled crucible according to claim 8, characterized in that the solid material at the bottom of the crucible body (1) is provided with a counter bore (21), the screw (4) being arranged in the counter bore (21), and further comprising a cover (7) arranged in the counter bore (21), the cover (7) being flush with the solid material at the bottom.