CN221158559U - Mould for preventing thick-wall vertical centrifugal casting from sticking to mould - Google Patents
Mould for preventing thick-wall vertical centrifugal casting from sticking to mould Download PDFInfo
- Publication number
- CN221158559U CN221158559U CN202323127201.1U CN202323127201U CN221158559U CN 221158559 U CN221158559 U CN 221158559U CN 202323127201 U CN202323127201 U CN 202323127201U CN 221158559 U CN221158559 U CN 221158559U
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- mould
- die
- mold
- sticking
- thick
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- 238000009750 centrifugal casting Methods 0.000 title claims abstract description 29
- 239000011449 brick Substances 0.000 claims abstract description 5
- 238000005056 compaction Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 3
- 238000005266 casting Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 6
- 238000005058 metal casting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model belongs to the technical field of vertical centrifugal casting, and provides a die for preventing a thick-wall vertical centrifugal casting from sticking to a die, which comprises a die body, a die bottom and a die cover, wherein a circular groove is formed at the upper end of the die bottom, the center of the circular groove coincides with the center of the die bottom, a whole circular refractory block is embedded in the circular groove, the upper end face of the refractory block is flush with the upper end face of the die bottom, and the joint fills up refractory paste compaction. The utility model adopts the technological measures of locally embedding and customizing the formed refractory bricks for the parts of the centrifugal casting mold, solves the local adhesion of the centrifugal casting mold, effectively solves the problem of mold sticking of large thick-wall annular centrifugal castings with the wall thickness of more than or equal to 120mm, has stable casting quality, and can be repeatedly used for a long time.
Description
Technical Field
The utility model belongs to the technical field of vertical centrifugal casting, and particularly relates to a die for preventing thick-wall vertical centrifugal castings from sticking to the die.
Background
Centrifugal casting is a process in which liquid metal is poured into a mold that rotates at a high speed, so that the liquid metal cools and solidifies under the action of centrifugal force and forms an annular casting. Because of the important influence of centrifugal force on metal solidification in the centrifugal casting process, the metal structure of the centrifugal casting is compact, the metal structure has good metallurgical structure and physical properties, and the casting mould can be repeatedly recycled, so that the centrifugal casting is also a typical process method for producing high-quality annular castings in batches.
The vertical centrifugal casting is mainly used for producing circular castings with the height smaller than the diameter, and the casting mold mainly comprises a metal mold body, a mold bottom and a mold cover. The casting mold structure makes the mold bottom have relatively strong thermal shock in the casting production process, and at present, the centrifugal casting process generally adopts a mode of spraying high-temperature resistant paint on the surface of the metal casting mold so as to reduce the thermal shock damage of high-temperature alloy liquid to the metal casting mold, protect the metal casting mold and prolong the service life of the metal casting mold. Production practice shows that the mold bottom which is strongly impacted by heat in the production of large-sized thick-wall annular centrifugal castings with the wall thickness of more than or equal to 120mm is difficult to form reliable protection only by using the high-temperature resistant coating, and the surface coating of the mold bottom is often invalid due to the strong thermal shock effect in the production of the large-sized thick-wall annular centrifugal castings, so that the castings are adhered to the mold bottom, and even the molds are scrapped, thereby severely restricting the production.
Disclosure of utility model
The utility model provides a die for preventing a thick-wall vertical centrifugal casting from sticking to a die, which aims to solve the technical problems that in the production process of a large thick-wall annular centrifugal casting with the wall thickness of more than or equal to 120mm, the adhesion strength between a high-temperature resistant coating and a die bottom is insufficient to resist high-temperature metal liquid thermal shock, so that the casting is adhered to the die, and the casting, even the die, is scrapped.
The technical scheme includes that the mold for preventing thick-wall vertical centrifugal castings from sticking to the mold comprises a mold body, a mold bottom and a mold cover, wherein a circular groove is formed in the upper end of the mold bottom, the center of the circular groove coincides with the center of the mold bottom, a whole circular refractory block is embedded into the circular groove, the upper end face of the refractory block is level with the upper end face of the mold bottom, and the joint is filled with refractory paste for compaction.
Further, the depth of the circular groove is 1/3 of the thickness of the die bottom.
Further, the rim width of the circular groove is 80% of the wall thickness of the die body.
Further, the refractory material of the refractory block is high alumina brick material.
Compared with the prior art, the utility model has the following beneficial effects:
1. The mold is assembled without being influenced, the mold body and the mold cover are assembled according to the normal condition, the mold is formed by spraying the conventional refractory coating on the mold body and the mold cover, the mold bottom embedded with the refractory blocks is used for forming the casting mold, and after the casting high-temperature molten metal is solidified and cooled, the casting can be ensured to be shaped and demoulded smoothly, and the reliability and the production efficiency of the use of the casting mold are obviously improved.
2. The mold bottom with the embedded refractory blocks is convenient to maintain and can be used repeatedly, the repairing can be carried out for more than 15 times, the quality accident of sticking the mold is effectively avoided, the whole service life of the mold is prolonged, and the use cost of the mold is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a front cut-away view of the bottom of the mold of the present utility model;
Fig. 3 is a top view of the mold bottom of the present utility model.
In the figure: 1. a die body; 2. a die bottom; 21. a circular groove; 3. a mold cover; 4. a refractory block.
Detailed Description
For a better understanding of the objects, structures and functions of the present utility model, a mold for preventing sticking of thick-wall vertical centrifugal castings according to the present utility model will be described in further detail with reference to the accompanying drawings.
As shown in figures 1-3, the mold for preventing thick-wall vertical centrifugal castings from sticking comprises a mold body 1, a mold bottom 2 and a mold cover 3, wherein a circular groove 21 is formed in the upper end of the mold bottom 2, the center of the circular groove 21 coincides with the center of the mold bottom 2, a whole circular refractory block 4 is embedded in the circular groove 21, the upper end face of the refractory block 4 is flush with the upper end face of the mold bottom 2, and the joint is filled with refractory paste for compaction.
In this embodiment, the manufacturing process of the mold bottom 2 is as follows:
1. The circular groove 21 is processed by taking the center of the die bottom 2 as a reference, the depth is 1/3 of the thickness of the die bottom 2, and the edge width of the circular groove 21 is 80% of the wall thickness of the die body 1.
2. According to the size of the circular groove 21, a special forming refractory block 4 is customized, and the refractory block 4 is made of high-alumina bricks and is formed by high-temperature roasting.
3. The refractory blocks 4 are inlaid in the circular grooves 21 of the die bottom 2, the surfaces of the refractory blocks are polished to be level with the original surfaces of the die bottom 2, and the joints are filled with refractory coating paste for compaction.
The mold for preventing the thick-wall vertical centrifugal casting from sticking to the mold adopts the technical measure of locally embedding and customizing the formed refractory bricks at the part of the centrifugal casting, solves the local adhesion of the centrifugal casting mold, effectively solves the problem of sticking to the mold of the large thick-wall annular centrifugal casting with the wall thickness of more than or equal to 120mm, has stable casting quality, and can be repeatedly used for a long time.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The utility model provides a prevent mould of vertical centrifugal foundry goods of thick wall sticking mould, includes die body (1), die bottom (2) and die cover (3), and its characterized in that, die bottom (2) upper end is equipped with circular recess (21), and the centre of a circle of circular recess (21) coincides with die bottom (2) center, imbeds monoblock circular fire-resistant piece (4) in circular recess (21), and the up end of fire-resistant piece (4) is parallel and level with die bottom (2) up end, and the junction fills fire-resistant coating paste compaction.
2. Mould for preventing sticking of thick-walled vertical centrifugal castings according to claim 1, characterized in that the depth of the circular recess (21) is 1/3 of the thickness of the mould bottom (2).
3. Mould for preventing sticking to mould of thick-wall vertical centrifugal castings according to claim 1, characterized in that the edgewise width of the circular recess (21) is 80% of the wall thickness of the mould body (1).
4. A mould for preventing thick-wall vertical centrifugal castings from sticking to the mould according to any one of claims 1 to 3, characterized in that the refractory material of the refractory block (4) is a high alumina brick material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323127201.1U CN221158559U (en) | 2023-11-20 | 2023-11-20 | Mould for preventing thick-wall vertical centrifugal casting from sticking to mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323127201.1U CN221158559U (en) | 2023-11-20 | 2023-11-20 | Mould for preventing thick-wall vertical centrifugal casting from sticking to mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221158559U true CN221158559U (en) | 2024-06-18 |
Family
ID=91442139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323127201.1U Active CN221158559U (en) | 2023-11-20 | 2023-11-20 | Mould for preventing thick-wall vertical centrifugal casting from sticking to mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221158559U (en) |
-
2023
- 2023-11-20 CN CN202323127201.1U patent/CN221158559U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |