CN220112284U - Alloy casting mold with ceramic lining - Google Patents
Alloy casting mold with ceramic lining Download PDFInfo
- Publication number
- CN220112284U CN220112284U CN202322877925.1U CN202322877925U CN220112284U CN 220112284 U CN220112284 U CN 220112284U CN 202322877925 U CN202322877925 U CN 202322877925U CN 220112284 U CN220112284 U CN 220112284U
- Authority
- CN
- China
- Prior art keywords
- outer sleeve
- ceramic
- alloy casting
- cylinder body
- ceramic inner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 64
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 63
- 239000000919 ceramic Substances 0.000 title claims abstract description 52
- 238000005266 casting Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010583 slow cooling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model discloses an alloy casting mold with a ceramic lining, and belongs to the technical field of alloy casting molds. The technical proposal is as follows: the outer sleeve comprises a first support, and a first cylinder body is arranged on the first support; the ceramic inner sleeve is arranged in the outer sleeve and comprises a second support, the second support is provided with a second cylinder body, the top of the ceramic inner sleeve is open, and the second cylinder body is attached to the first cylinder body; the top of the ceramic inner sleeve exceeds the top of the outer sleeve and is outwardly provided with a horizontal cornice. The alloy casting mold solves the difficult problems of quick demolding and maintaining the molding state of the alloy ingot during slow cooling treatment, is simple to operate, improves the quality of the alloy ingot, and improves the production efficiency and the process yield.
Description
Technical Field
The utility model relates to the technical field of alloy casting molds, in particular to an alloy casting mold with a ceramic lining.
Background
The casting high-temperature alloy material and the heat-resistant steel are mainly smelted by a vacuum smelting furnace, molten steel after smelting is poured into a mould, demoulding treatment is carried out to obtain an alloy ingot bar, and the alloy ingot bar is cut and polished to obtain a master alloy ingot for casting aerospace and gas turbine castings. The melting point of the cast high-temperature alloy and the heat-resistant steel is 1380-1430 ℃, the casting temperature is generally 1480-1600 ℃, and after the casting is completed, the alloy ingot is cooled, and the master alloy ingot can be obtained after demoulding.
At present, the casting mould commonly used in the production field is only an open cylindrical mould made of steel, and after high-temperature molten steel is cast into the mould, the molten steel in the mould is quickly solidified in an air cooling environment, so that the center part of a large-size master alloy ingot is easy to form looseness. Therefore, after molten steel is poured into the mould, the master alloy ingot in the mould can be subjected to sand burying treatment, so that the master alloy ingot is slowly cooled, and the loose size of the central part of the master alloy ingot is promoted to be reduced. And when the temperature is reduced to 1380-1430 ℃ after casting the high-temperature alloy and the heat-resistant steel, the alloy is in a semi-solidification state, namely the outer surface of the alloy ingot is in a solidification state, and the core is in a liquid state. Therefore, by adopting the existing steel casting mold, on one hand, the cooling rate is higher, and the problem that the center part of a large-size master alloy ingot is loose still exists; on the other hand, when the master alloy ingot is demolded after cooling, it is troublesome. Therefore, how to rapidly demold and maintain the forming state of the alloy ingot becomes a key technical problem of slow cooling treatment of the master alloy ingot.
Disclosure of Invention
The utility model aims to solve the technical problems that: the alloy casting mold with the ceramic lining solves the difficult problems of rapid demolding and maintaining of the molding state of an alloy ingot during slow cooling treatment, is simple to operate, improves the quality of the alloy ingot, improves the production efficiency and improves the process yield.
The technical scheme of the utility model is as follows:
an alloy casting mold with a ceramic lining comprises an open outer sleeve, wherein the outer sleeve comprises a first collet, and a first cylinder body is arranged on the first collet; the ceramic inner sleeve is arranged in the outer sleeve and comprises a second support, the second support is provided with a second cylinder body, the top of the ceramic inner sleeve is open, and the second cylinder body is attached to the first cylinder body; the top of the ceramic inner sleeve exceeds the top of the outer sleeve and is outwardly provided with a horizontal cornice.
Preferably, the horizontal cornice is in contact with the top of the outer sleeve.
Preferably, the outer end of the horizontal cornice exceeds the first barrel of the outer sleeve.
Preferably, the outer end of the horizontal cornice is also provided with a vertical cornice downwards.
Preferably, the outer sleeve is made of steel.
Preferably, the first cylinder body and the second cylinder body are both cylindrical.
Preferably, a handle is arranged outside the first cylinder body.
Compared with the prior art, the utility model has the following beneficial effects:
according to the alloy casting mold, the ceramic inner sleeve is placed in the existing mold, after molten steel is cast in the ceramic inner sleeve, the ceramic inner sleeve in the outer sleeve is exposed, and then sand is buried, and as the ceramic heat insulation property is better than that of steel and the heat conductivity is poorer than that of steel, the consistency of the internal temperature and the external temperature can be kept when the molten steel in the mold is subjected to sand burying cooling treatment, so that the solidification rate of the molten steel is reduced, the internal porosity of an alloy ingot is reduced, and the alloy ingot is kept in a certain shape; meanwhile, when the alloy ingot is demolded, the alloy ingot can be obtained only by crushing the ceramic inner sleeve, the problems that the existing casting mold is troublesome in demolding and the forming state of the alloy ingot cannot be maintained during slow cooling treatment are solved, the operation is simple, the quality of the alloy ingot is improved, meanwhile, the production efficiency is improved, and the process yield is improved.
Drawings
Fig. 1 is a schematic structural view of an alloy casting mold with a ceramic liner according to the present utility model.
In the figure, 101, a first base; 102. a first cylinder body; 103. a handle; 201. a second bottom support; 202. a second cylinder body; 203. a horizontal cornice; 204. vertical cornice.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Example 1
As shown in fig. 1, the embodiment provides an alloy casting mold with a ceramic lining, which comprises an open steel outer sleeve, wherein the outer sleeve comprises a first base 101, a cylindrical first barrel 102 is arranged on the first base 101, the diameter of the first barrel 102 is 200mm, the height is 400mm, and the thickness of the first base 101 and the first barrel 102 is 10mm. The ceramic inner sleeve is placed in the outer sleeve, the ceramic inner sleeve comprises a second collet 201, a second cylindrical barrel 202 is arranged on the second collet 201, the top of the ceramic inner sleeve is open, the diameter of the second barrel 202 is 180mm, the second barrel 202 is attached to the first barrel 102, and the thicknesses of the second collet 201 and the second barrel 202 are 2mm. Simultaneously, ceramic inner skleeve top exceeds outer sleeve top and outwards is provided with horizontal eaves board 203, and the thickness of horizontal eaves board 203 is also 2mm, and horizontal eaves board 203 and outer sleeve top contact and the outer tip of horizontal eaves board 203 surpass the barrel one 102 of outer sleeve, prevent that molten steel after melting from flowing into between ceramic inner skleeve and the outer sleeve when pouring into ceramic inner skleeve. In order to further prevent molten steel from entering between the ceramic inner sleeve and the outer sleeve, a circle of vertical cornice 204 can be arranged downwards at the outer end part of the horizontal cornice 203, so that a shielding effect is further achieved. In this embodiment, a ceramic inner sleeve is placed within an outer sleeve, thereby forming a ceramic liner within the outer sleeve.
Working principle:
when the ceramic inner sleeve is used, the ceramic inner sleeve is placed into the outer sleeve, the die is combined, then the baked pouring gate and the steel ingot mould shell are assembled, and the baking temperature is 860 ℃ and the baking time is 2 hours. Then, the mould of this embodiment is put into the vacuum melting furnace, put into the crucible of vacuum melting furnace with the master alloy ingot, heat, after master alloy ingot is melted into molten steel completely, pour molten steel into ceramic inner skleeve, and take out the mould from vacuum melting furnace immediately, take off outside outer sleeve fast, expose inside ceramic inner skleeve, ceramic inner skleeve and solidified alloy ingot laminating together this moment, because the ceramic inner skleeve of mould is thinner, basically unanimous with the alloy ingot surface temperature of inside, therefore the ceramic inner skleeve can accurately reflect the surface temperature of alloy ingot, can also make the alloy ingot keep certain shape. Then placing the alloy ingots with the outer surface protected by the ceramic inner sleeve into sand for burying, taking out the alloy ingots after the heat treatment is finished, crushing the outer ceramic inner sleeve and further obtaining the alloy ingots, namely obtaining castings with good performance. Wherein, the master alloy ingot can be K424, K435, ZG1Cr18Ni9Ti, ZG1Cr17Ni3 and other alloys, and the embodiment adopts K435 to cast nickel-based superalloy materials. In addition, in order to be convenient for take off outer sleeve, can set up handle 103 in the outside of outer sleeve, thickness is 10mm, when taking off the outer sleeve, hand handle 103 can, the staff of being convenient for operates.
Comparative example 1
The mold of comparative example 1 includes only the outer sleeve made of steel, the ceramic inner sleeve is not provided inside, and only the outer sleeve made of steel is provided. When the pouring gate is used, the baked pouring gate and the steel ingot mould shell are assembled, and the baking temperature is 860 ℃ and the time is 2h. Then, the die is placed in a vacuum melting furnace, a master alloy ingot is placed in a crucible of the vacuum melting furnace, heating is carried out, after the master alloy ingot is completely melted into molten steel, the molten steel is poured in an outer sleeve, and cooling is carried out in an air cooling state. Wherein, the master alloy ingot adopts K435 cast nickel-based superalloy material.
To further verify the difference between the mold of example 1 and the mold of comparative example 1, three samples were extracted from the cast castings obtained in example 1 and comparative example 1, respectively, and cylindrical test bars were cut, and mechanical properties were tested after machining into tensile test bars, and the test results are shown in table 1:
TABLE 1 mechanical test results of tensile bars prepared in example 1 and comparative example 1
As is apparent from the test results of Table 1, the shrinkage cavity size of the cast casting obtained by using the mold of example 1 is significantly smaller than that of the mold of comparative example 1, because the ceramic has better heat insulation property than steel and poorer heat conductivity than steel, and the ceramic inner sleeve is thinner, so that the consistency of the internal and external temperatures can be maintained during the sand-burying cooling treatment of the molten steel in the mold, thereby reducing the solidification rate and the internal porosity of the alloy ingot. Meanwhile, when the alloy ingot is demolded, the alloy ingot can be obtained by crushing the ceramic inner sleeve, the operation is simple, and the production efficiency is improved.
Claims (7)
1. An alloy casting mold with a ceramic lining comprises an open outer sleeve, wherein the outer sleeve comprises a first collet (101), and a first cylinder body (102) is arranged on the first collet (101); the ceramic inner sleeve is characterized in that the ceramic inner sleeve is arranged in the outer sleeve and comprises a second bottom support (201), a second cylinder body (202) is arranged on the second bottom support (201), the top of the ceramic inner sleeve is open, and the second cylinder body (202) is attached to the first cylinder body (102); the top of the ceramic inner sleeve exceeds the top of the outer sleeve and is outwardly provided with a horizontal cornice (203).
2. An alloy casting mould with ceramic lining according to claim 1, characterized in that the horizontal cornice (203) is in contact with the top of the outer sleeve.
3. An alloy casting mould with ceramic lining according to claim 1, characterized in that the outer end of the horizontal cornice (203) extends beyond the first (102) of the outer sleeve.
4. A ceramic lined alloy casting mould according to claim 3, wherein the outer end of the horizontal cornice (203) is further provided with a vertical cornice (204) downwardly.
5. An alloy casting mould with a ceramic lining as claimed in claim 1 wherein the outer sleeve is made of steel.
6. An alloy casting mould with a ceramic lining according to claim 1, characterized in that the first (102) and second (202) barrels are cylindrical.
7. An alloy casting mould with a ceramic lining according to claim 1, characterized in that the outside of the first barrel (102) is provided with a handle (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322877925.1U CN220112284U (en) | 2023-10-26 | 2023-10-26 | Alloy casting mold with ceramic lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322877925.1U CN220112284U (en) | 2023-10-26 | 2023-10-26 | Alloy casting mold with ceramic lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220112284U true CN220112284U (en) | 2023-12-01 |
Family
ID=88887393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322877925.1U Active CN220112284U (en) | 2023-10-26 | 2023-10-26 | Alloy casting mold with ceramic lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220112284U (en) |
-
2023
- 2023-10-26 CN CN202322877925.1U patent/CN220112284U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201150980Y (en) | Composite crystallizer device for continuous casting of titanium-nickel alloy | |
| CN101844218A (en) | Low pressure casting process for aluminum alloy cylinder part | |
| CN105583366A (en) | Precision casting method for thin-wall high-temperature alloy floating wall tiles | |
| CN105081277A (en) | Low-pressure casting process of metal aluminium ring | |
| CN113369453A (en) | Aluminum alloy plate strip preparation method based on vacuum centrifugal casting and vacuum centrifugal casting device | |
| CN110421144A (en) | A kind of high temperature alloy floating wall tile precision casting under adjustable pressure method of additional electromagnetic field effect | |
| CN110125331A (en) | A kind of shape casting technique of casting complicated inner cavity | |
| CN106232262B (en) | Single crystal casting mold | |
| CN103691916A (en) | Casting method for protecting thin-wall casting from local isolated hot spot shrinkage | |
| CN104878252A (en) | Method for casting thin-walled aluminum alloy castings | |
| CN220112284U (en) | Alloy casting mold with ceramic lining | |
| CN110315018A (en) | The soft core forging method of superhigh temperature of high efficiency elimination blank inner void type defect | |
| CN100406161C (en) | Oriented freezing cast method | |
| CN112708930A (en) | Casting device and method for improving temperature gradient of directional solidification casting | |
| CN209918861U (en) | Composite graphite chill | |
| CN109475931B (en) | Directional solidification cooling furnace and cooling method using the same | |
| CN104874736A (en) | Rapidly detached investment casting technology | |
| CN210587103U (en) | Liquid forging ultra-light wheel disc assembly forming die and system | |
| CN112222363A (en) | Ceramic salt core formed by one-step die-casting through molten liquid and preparation method thereof | |
| CN103418759B (en) | Method with glass as covering heat preservation agent for vacuum nickel ingot casting and special mould | |
| JP5729642B2 (en) | Columnar ingot casting equipment | |
| CN110625062A (en) | Casting process for casting hinge lug by adopting shell mold | |
| CN211915435U (en) | Die for producing arc-shaped magnesium alloy castings | |
| CN217452044U (en) | Split type steel ingot casting mold | |
| CN217492625U (en) | Electromagnetic heating and water cooling dual-function casting mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |