Nested combined crucible for induction melting

Abstract

The utility model belongs to the technical field of single-crystal high-temperature alloy casting, and provides a nested combined crucible for induction melting, which comprises an outer crucible, an inner crucible, an inner crucible, an outer crucible and a plurality of inner crucible bodies, the inner crucible is arranged in the remelting cavity and is configured to have a switchable connected or disconnected state relative to the outer crucible; the end cover is arranged on the outer crucible, a through hole is formed in the end cover, and the diameter of the through hole is smaller than that of a port of the outer crucible; wherein in the remelting process, the inner crucible is connected with the outer crucible, the end cover is fixed relative to the outer crucible and covers the port, and when melt needs to be obtained, the end cover is separated from the port, and the inner crucible is not connected with the outer crucible. According to the utility model, the remelting efficiency can be improved, and the remelting quality is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of single crystal high temperature alloy casting, and in particular relates to a nested combined crucible for induction melting. Background Art

[0002] High-purity, multi-variety, and large-scale production of single-crystal high-temperature alloy castings has become a major trend, among which induction melting equipment is usually required for remelting and casting single-crystal high-temperature alloys.

[0003] At present, the crucible basket is mainly fixed in the electromagnetic induction coil, and the crucible of a specific size is placed in the crucible basket. This means that the crucible needs to be reused during a single remelting process, causing impurities to diffuse into the alloy liquid. Frequent replacement of the crucible will reduce production efficiency. Therefore, a nested combined crucible is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a nested combined crucible for induction melting to solve the above problems, improve the remelting efficiency and ensure the remelting quality.

[0005] To achieve the above object, the utility model provides the following solution: a nested combined crucible for induction melting, comprising:

[0006] An outer crucible, which is used to be fixed in the crucible basket and defines a remelting cavity therein;

[0007] an inner crucible, disposed in the remelting chamber and configured to have a switchable connected or disconnected state relative to the outer crucible;

[0008] An end cover is arranged on the outer crucible, the end cover is provided with a through hole, and the aperture of the through hole is smaller than the aperture of the port of the outer crucible;

[0009] During the remelting process, the inner crucible is connected to the outer crucible, the end cover is fixed relative to the outer crucible and covers the port, and when the melt needs to be obtained, the end cover is detached from the port, and the inner crucible is not connected to the outer crucible.

[0010] Preferably, it also includes:

[0011] A first positioning block is arranged on the end cover, and a first positioning groove is opened on the side wall of the outer crucible. The first positioning block and the first positioning groove have a switchable connection or disconnection state, wherein when the two are connected, the end cover is fixed relative to the outer crucible, and when the two are disconnected, the end cover is detached from the port.

[0012] Preferably, a plurality of the first positioning blocks are arranged along the circumferential direction of the inner side wall of the end cover, and the first positioning grooves are distributed in a one-to-one correspondence with the plurality of the first positioning blocks.

[0013] Preferably, the first positioning groove is an L-shaped structure, the short side of the first positioning groove vertically penetrates the top surface of the outer crucible along the side wall, and the long side of the first positioning groove extends horizontally along the side wall of the outer crucible. When the first positioning block is connected to the first positioning groove, the two cooperate to clamp the end cover to the outer crucible.

[0014] Preferably, the end cover is a conical structure, and the through hole is opened at the tip of the end cover in a direction away from the outer crucible.

[0015] Preferably, it also includes:

[0016] The second positioning block is fixedly connected to the outer side wall of the inner crucible. The inner wall of the outer crucible is provided with a second positioning groove. The second positioning block and the second positioning groove are limitedly slidably connected along the vertical direction.

[0017] Preferably, it also includes:

[0018] The base is fixedly connected to the inner wall of the bottom end of the outer crucible. The base is a heat storage structure. The outer wall of the bottom end of the inner crucible is provided with an embedding groove. The base is slidably connected with the embedding groove.

[0019] Preferably, the base is a graphite plate.

[0020] Preferably, it also includes:

[0021] A pair of clamping blocks are respectively fixed on opposite sides of the outer wall surface of the end cover.

[0022] Compared with the prior art, the utility model has the following advantages and technical effects:

[0023] The utility model is provided with an outer crucible and an inner crucible respectively, and the outer crucible is fixed to the crucible basket, so as to realize continuous heating in the remelting chamber under the action of the electromagnetic induction coil, and the inner crucible is used to heat the single crystal high-temperature alloy during remelting to obtain a molten material through the inner crucible whose connection state can be switched with the outer crucible, and the end cover covers the port of the outer crucible during the process, so as to effectively improve the heating effect and promote the improvement of the remelting efficiency, and when taking out the molten material, the end cover is separated from the outer crucible, and then the molten material is obtained by taking out the inner crucible, and during the process, the inner crucible can be replaced to ensure that impurities accumulate during the remelting process and diffuse into the alloy liquid, so as to effectively ensure the remelting quality, and when the inner crucible is replaced, the connection state between the outer crucible and the crucible basket is not affected, and the reduction of the remelting efficiency caused by repeated replacement of the outer crucible is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0025] Figure 1 It is a structural schematic diagram of the overall device;

[0026] Figure 2 is a position relationship diagram of the inner crucible and the outer crucible;

[0027] Figure 3 is a diagram showing the position relationship between the base and the inner crucible;

[0028] Figure 4 is a structural schematic diagram of the first positioning block and the end cover;

[0029] Among them, 1. outer crucible; 2. inner crucible; 3. end cover; 4. first positioning block; 5. second positioning block; 6. base; 7. clamping block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Example: Refer to Figure 1-Figure 4 , a nested combined crucible for induction melting, comprising:

[0033] An outer crucible 1, which is used to be fixed in the crucible basket and defines a remelting cavity inside;

[0034] The inner crucible 2 is arranged in the remelting chamber and is configured to have a switchable connection or disconnection state relative to the outer crucible 1;

[0035] An end cover 3 is arranged on the outer crucible 1, and a through hole is opened on the end cover 3, and the aperture of the through hole is smaller than the port diameter of the outer crucible 1;

[0036] During the remelting process, the inner crucible 2 is connected to the outer crucible 1, and the end cover 3 is fixed relative to the outer crucible 1 and covers the port. When the molten material needs to be obtained, the end cover 3 is detached from the port, and the inner crucible 2 is not connected to the outer crucible 1.

[0037] The utility model is provided with an outer crucible 1 and an inner crucible 2 respectively, and the outer crucible 1 is fixed to the crucible basket, so as to realize continuous heating in the remelting chamber under the action of the electromagnetic induction coil, and the inner crucible 2 which can switch the connection state with the outer crucible 1 is used to heat the single crystal high-temperature alloy through the inner crucible 2 during remelting to obtain a molten material, and the end cover 3 covers the port of the outer crucible 1 during the process, so as to effectively improve the heating effect and promote the improvement of the remelting efficiency, and when taking out the molten material, the end cover 3 is separated from the outer crucible 1, and then the molten material is obtained by taking out the inner crucible 2, and during the process, the inner crucible 2 can be replaced to ensure that impurities accumulate during the remelting process and diffuse into the alloy liquid, so as to effectively ensure the remelting quality, and when the inner crucible 2 is replaced, the connection state between the outer crucible 1 and the crucible basket is not affected, and the reduction of the remelting efficiency caused by repeated replacement of the outer crucible 1 is also reduced.

[0038] Furthermore, it also includes:

[0039] The first positioning block 4 is arranged on the end cover 3, and a first positioning groove is opened on the side wall of the outer crucible 1. The first positioning block 4 and the first positioning groove have a switchable connection or disconnection state, wherein, when the two are connected, the end cover 3 is fixed relative to the outer crucible 1, and when the two are disconnected, the end cover 3 is detached from the port.

[0040] By arranging the first positioning block 4 on the end cover 3 and utilizing the switchable connection or disconnection state between the first positioning block 4 and the first positioning groove, the end cover 3 and the outer crucible 1 are detachably connected, thereby improving the convenience of use.

[0041] Furthermore, a plurality of first positioning blocks 4 are arranged along the circumferential direction of the inner wall of the end cover 3 , and the first positioning grooves are distributed in a one-to-one correspondence with the plurality of first positioning blocks 4 .

[0042] By providing a plurality of first positioning blocks 4, the connection stability between the end cover 3 and the outer crucible 1 is improved on the basis of fixing the end cover 3 relative to the outer crucible 1 when the first positioning blocks 4 are connected to the first positioning grooves.

[0043] Furthermore, the first positioning groove is an L-shaped structure, the short side of the first positioning groove vertically extends upward along the side wall of the outer crucible 1 and penetrates its top surface, and the long side of the first positioning groove extends horizontally along the side wall of the outer crucible 1. When the first positioning block 4 is connected to the first positioning groove, the two cooperate to clamp the end cover 3 to the outer crucible 1.

[0044] When the end cover 3 needs to be installed, a plurality of first positioning blocks 4 are matched with the short sides of the first positioning grooves one by one. After the first positioning blocks 4 extend into the adjacent short sides, the end cover 3 is twisted along the long side direction until the first positioning blocks 4 extend into the long sides of the adjacent first positioning grooves until they abut against the inner wall, thereby stably connecting the end cover 3 to the outer crucible 1.

[0045] Furthermore, the end cover 3 is a conical structure, and the through hole is opened at the tip of the end cover 3 in a direction away from the outer crucible 1 .

[0046] The end cover 3 is combined to cover the port of the outer crucible 1, and the waste gas generated during the heating process in the remelting chamber is discharged through the through hole to ensure the remelting effect. At the same time, covering the outer crucible 1 improves the heating effect inside the outer crucible 1 and improves the remelting efficiency.

[0047] Furthermore, it also includes:

[0048] The second positioning block 5 is fixedly connected to the outer wall of the inner crucible 2. The inner wall of the outer crucible 1 is provided with a second positioning groove. The second positioning block 5 is slidably connected with the second positioning groove in a vertical direction.

[0049] The second positioning block 5 and the second positioning groove are used to limit and slide to achieve the limit fixation of the inner crucible 2 and the outer crucible 1, which not only achieves relative fixation between the inner crucible 2 and the outer crucible 1 when they are connected, but also facilitates taking out the inner crucible 2 to obtain the melt.

[0050] Furthermore, it also includes:

[0051] The base 6 is fixedly connected to the inner wall of the bottom end of the outer crucible 1. The base 6 is a heat storage structure. The outer wall of the bottom end of the inner crucible 2 is provided with an embedding groove, and the base 6 is slidably connected to the embedding groove.

[0052] Furthermore, the base 6 is a graphite plate.

[0053] By fixing the base 6 made of graphite to the inner wall of the bottom end of the outer crucible 1 and providing an embedding groove on the outer wall of the bottom end of the inner crucible 2, the connection stability between the inner crucible 2 and the outer crucible 1 is improved when the inner crucible 2 and the outer crucible 1 are relatively fixed. When the overall remelting is stopped, the base 6 is used to alleviate the cooling speed and extend the service life of the structure.

[0054] Furthermore, it also includes:

[0055] A pair of clamping blocks 7 are fixedly connected to opposite sides of the outer wall of the end cover 3 respectively.

[0056] By fixing a pair of clamping blocks 7 on opposite sides of the outer wall of the end cover 3, it is convenient for personnel to clamp the end cover 3 with tools to twist or remove it.

[0057] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A nested combined crucible for induction melting, characterized in that: include: An outer crucible (1) is used to be fixed in the crucible basket and defines a remelting cavity inside; An inner crucible (2) is arranged in the remelting chamber and is configured to have a switchable connection or disconnection state relative to the outer crucible (1); An end cover (3) is arranged on the outer crucible (1), the end cover (3) is provided with a through hole, and the diameter of the through hole is smaller than the diameter of the port of the outer crucible (1); In the remelting process, the inner crucible (2) is connected to the outer crucible (1), the end cover (3) is fixed relative to the outer crucible (1) and covers the port, and when it is necessary to obtain the molten material, the end cover (3) is detached from the port, and the inner crucible (2) is not connected to the outer crucible (1).

2. The nested combined crucible for induction melting according to claim 1, characterized in that: Also includes: A first positioning block (4) is arranged on the end cover (3); a first positioning groove is provided on the side wall of the outer crucible (1); the first positioning block (4) and the first positioning groove have a switchable connection or disconnection state; when the two are connected, the end cover (3) is fixed relative to the outer crucible (1); when the two are disconnected, the end cover (3) is detached from the port.

3. The nested combined crucible for induction melting according to claim 2, characterized in that: A plurality of the first positioning blocks (4) are arranged along the circumferential direction of the inner side wall of the end cover (3), and the first positioning grooves are distributed in a one-to-one correspondence with the plurality of the first positioning blocks (4).

4. The nested combined crucible for induction melting according to claim 2, characterized in that: The first positioning groove is an L-shaped structure, the short side of the first positioning groove vertically passes through the top surface of the outer crucible (1) along the side wall, and the long side of the first positioning groove extends horizontally along the side wall of the outer crucible (1). When the first positioning block (4) is connected to the first positioning groove, the two cooperate to clamp the end cover (3) and the outer crucible (1).

5. The nested combined crucible for induction melting according to claim 1, characterized in that: The end cover (3) is of a conical structure, and the through hole is opened at the tip of the end cover (3) in a direction away from the outer crucible (1).

6. The nested combined crucible for induction melting according to claim 1, characterized in that: Also includes: The second positioning block (5) is fixedly connected to the outer wall of the inner crucible (2), and the inner wall of the outer crucible (1) is provided with a second positioning groove, and the second positioning block (5) is slidably connected with the second positioning groove in a vertical direction.

7. The nested combined crucible for induction melting according to claim 1, characterized in that: Also includes: The base (6) is fixedly connected to the inner wall of the bottom end of the outer crucible (1); the base (6) is a heat storage structure; the outer wall of the bottom end of the inner crucible (2) is provided with an embedding groove; the base (6) is slidably connected to the embedding groove.

8. The nested combined crucible for induction melting according to claim 7, characterized in that: The base (6) is a graphite plate.

9. The nested combined crucible for induction melting according to claim 1, characterized in that: Also includes: A pair of clamping blocks (7) are respectively fixedly connected to opposite sides of the outer wall surface of the end cover (3).

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