CN115090850A - Full-automatic production line and production method for centrifugal casting of high-temperature alloy castings - Google Patents
Full-automatic production line and production method for centrifugal casting of high-temperature alloy castings Download PDFInfo
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- CN115090850A CN115090850A CN202211029314.5A CN202211029314A CN115090850A CN 115090850 A CN115090850 A CN 115090850A CN 202211029314 A CN202211029314 A CN 202211029314A CN 115090850 A CN115090850 A CN 115090850A
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- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention belongs to the technical field of centrifugal casting, and particularly discloses a full-automatic centrifugal casting production line and a production method for a high-temperature alloy casting, wherein the full-automatic centrifugal casting production line comprises a preparation area, a vacuum working area, a centrifugal casting working area, a cooling table and a disassembly area; the mechanical clamping jaws complete the assembly of the centrifugal casting chamber in the preparation area, the assembled centrifugal casting chamber is automatically transported to a vacuum working area by a roller transportation rail for vacuumizing, and the centrifugal casting chamber is transported to the centrifugal casting working area for rapid vacuum induction melting and centrifugal casting after vacuumizing. And simultaneously assembling the next centrifugal casting chamber and vacuumizing, wherein after the previous group of castings are formed, the heating coil automatically rises, the vacuum chamber after centrifugal casting is automatically conveyed to the cooling table by the roller track, and the next group of vacuum centrifugal casting chambers are installed on the rotating shaft for induction melting.
Description
Technical Field
The invention belongs to the technical field of centrifugal casting equipment, and particularly relates to a full-automatic production line and a production method for high-temperature alloy castings.
Background
With the improvement of the requirements on the whole service life and the performance of the engine, the realization of the structure control of the high-temperature alloy casting for the engine becomes more important, and the improvement of the fatigue performance and other mechanical properties becomes more important. Research shows that for a supercharger turbine of an automobile engine, the main loads borne by the turbine blade at the intermediate temperature are fatigue and instantaneous tension, and the material is required to have high tensile strength and fatigue strength and good crack propagation resistance. However, the turbocharger turbine of the vehicle engine is prepared by investment casting at present, for the castings with complex structures and large wall thickness difference, the defects of shrinkage porosity, shrinkage cavity, segregation and the like are often generated in the casting process, and the quality and the yield of the castings are seriously influenced. And the structure of the turbine casting prepared by investment casting is mostly coarse columnar crystals, and the average size of the crystal grains is more than 4 mm. The casting defects, coarse grains and structural and performance differences cause the generation and the development of fatigue cracks when the casting is used, the fatigue performance of the turbine is seriously deteriorated, and the service life of the turbine is shortened.
In addition, in order to improve the performance and the service life of the turbine, hot isostatic pressing treatment is carried out after investment casting, and the process is added, so that the manufacturing cost of the casting is greatly increased. In addition, the investment casting process has the advantages of low utilization rate of casting materials, complex and long process flow, more chemical auxiliary material requirements, high energy consumption and severe production environment. Therefore, the development of a process forming method for realizing fine-grained and compact structures of a high-performance and long-service-life supercharger turbine is urgently needed.
The centrifugal casting can make the molten metal in the casting mould do centrifugal motion by means of the high-speed rotation of the casting mould to fill the casting mould and form a casting, and is expected to form a fine-grained and compact casting. However, the existing centrifugal casting machine equipment adopts a pouring or swing arm type pouring mode, the vacuum cavity is large, the vacuumizing time is long, and the production efficiency of single pieces is low. Meanwhile, the production automation degree is low, a certain proportion of work still needs manual operation, workers work in a high-temperature environment, the labor intensity is high, the safety is difficult to guarantee, and the production requirement of high-temperature alloy castings is not met.
Disclosure of Invention
In order to solve the technical problems, the invention provides a full-automatic centrifugal casting production line and a production method for high-temperature alloy castings.
In order to achieve the purpose, the complete technical scheme of the invention comprises the following steps:
a full-automatic production line for centrifugal casting of high-temperature alloy castings comprises an automatic production signal box, a mechanical clamping jaw, a roller conveying track, a preparation area, a vacuum working area, a centrifugal casting working area, a cooling table and a disassembly area, wherein the preparation area, the vacuum working area, the centrifugal casting working area, the cooling table and the disassembly area are sequentially connected;
the automatic production signal box sends various instructions of the whole process flow, and the mechanical clamping jaw and the roller conveying track execute the instructions sent by the automatic production signal box; wherein the drum transport track is used for transporting the centrifugal casting chamber among the preparation area, the vacuum working area, the centrifugal casting working area, the cooling table and the disassembly area;
the preparation area comprises a preheating treatment furnace, a shell for casting, a crucible and a bar are preheated in the preheating treatment furnace in advance, a mechanical clamping jaw takes out the preheated shell, crucible and bar according to an instruction, and a centrifugal casting chamber is assembled, the centrifugal casting chamber comprises a shell, a rotary disc is arranged in the shell, the shell is fixed on the rotary disc through a fixed seat and a shell pressing plate, the rotary disc and the shell of the casting chamber are sealed through magnetic fluid, and electromagnetic valves are arranged on two sides of the shell;
the vacuum working area comprises a vacuum pump, and the vacuum pump is connected with an electromagnetic valve on the shell for vacuumizing;
the centrifugal casting working area comprises a heating coil, a tooling plate and an electric rotating shaft, and the heating coil is driven by a driving mechanism to lift and smelt the bar stock in the crucible; the tool plate is used for fixing the vacuumized centrifugal casting chamber, and the electric rotating shaft is connected with the rotating disc shaft through the coupler and drives the rotating disc and the shell in the centrifugal casting chamber to rotate;
the cooling table is used for vacuum breaking cooling of the centrifugal casting after casting;
the disassembly area is used for disassembling the cooled centrifugal casting chamber and taking out the casting.
The crucible is a disposable aluminum silicate ceramic fiber crucible.
The crucible has a pre-notched bottom.
The full-automatic production line is in flow line operation and comprises a plurality of groups of centrifugal casting chambers which sequentially operate.
The method for full-automatic production of the high-temperature alloy casting by adopting the production line comprises the following steps:
(1) assembling a centrifugal casting chamber: the automatic production signal box sends an instruction, the mechanical clamping jaw assembles a disposable crucible with a pre-opened bottom, a bar stock and a transparent quartz cover into an upper cover of a casting chamber, a centrifugal casting chamber shell with a rotary disc arranged inside is arranged on a mounting plate of a preparation area in advance, the mechanical clamping jaw assembles a preheated shell onto an adjustable fixing seat of the rotary disc, the shell is fixed on the rotary disc through the adjustable fixing seat and a shell pressing plate, the shell pressing plate is fixed on the rotary disc through a positioning pin, the rotary disc and the casting chamber shell are sealed by magnetic fluid, and electromagnetic valves capable of being externally connected with a vacuum pump are arranged on two sides of the shell; the mechanical clamping jaw covers the upper cover of the casting chamber to form an assembled centrifugal casting chamber;
(2) vacuumizing: the assembled centrifugal casting chamber is automatically transported to a vacuum working area by a roller transportation track, a vacuum pump is connected with an electromagnetic valve on a shell of the centrifugal casting chamber for vacuumizing, and the electromagnetic valve is automatically closed when the vacuum representation number reaches a set value;
(3) centrifugal casting: the centrifugal casting chamber after the vacuum pumping is automatically transported to a centrifugal casting working area by a roller transportation rail; in a centrifugal casting working area, a mechanical clamping jaw fixes the centrifugal casting chamber on a tooling plate, and a turntable shaft is connected with an electric rotating shaft through a coupling; the automatic production signal box sends out an instruction, a heating coil above the rack automatically descends under the driving of the driving mechanism, and fast vacuum induction melting and centrifugal casting processes are carried out, during the centrifugal casting process, when molten metal is heated to a liquid phase line, the electric rotating shaft is automatically opened, so that the rotating disc and the shell reach a limited rotating speed, after the temperature of a melt is raised to a pouring temperature, the melt automatically flows into a pouring gate from a pre-opening of the crucible, only the rotating disc inside the casting chamber drives the shell to rotate during the pouring and forming processes, and the crucible is in a static state;
(4) and (3) cooling: after the casting is formed, the heating coil automatically rises, the whole vacuum centrifugal casting chamber is transported to a cooling table by a roller transportation rail, and an electromagnetic valve is opened for vacuum breaking and cooling;
(5) the cooled centrifugal casting chamber is automatically transported to a disassembly area and the casting is removed by the mechanical gripper.
In the step (2), after the centrifugal casting chambers are conveyed to the vacuum working area, the assembly work of the next group of centrifugal casting chambers is started in the preparation area.
And (3) in the induction melting and centrifugal casting processes of the centrifugal casting chambers, vacuumizing the next group of assembled centrifugal casting chambers in a vacuum working area.
In the step (3), the melting rate of the bar stock in the induction melting process is 2 kg/min.
The high-temperature alloy casting obtained by the method is composed of fine isometric crystals, and the average grain size is 0.5-1 mm.
The invention adopts a full-automatic mode, the vacuum centrifugal casting chamber adopts an encapsulation mode, the rapid automatic encapsulation can be realized, the working efficiency is improved, and the encapsulated centrifugal casting chamber can independently complete the vacuum pumping work outside the casting equipment, so the vacuum pumping process and the induction melting process are separated, the vacuum pumping process and the induction melting process can be synchronously carried out without being sequentially executed like the traditional centrifugal casting process, the production efficiency is greatly improved, the whole process is completed by controlling the mechanical clamping jaw and the roller conveying track by an instruction sent by an automatic production signal box, the operation difficulty of workers is reduced, the labor environment is improved, the product quality is ensured, and the product percent of pass is improved. The method can be suitable for preparing various high-temperature alloy fine-grain castings by replacing shells with different shapes and adjusting smelting parameters.
Drawings
FIG. 1 is a schematic plan view of the full automatic production equipment for fine-grained high-temperature alloy castings.
FIG. 2 is a perspective view of the full-automatic production equipment for fine-grained high-temperature alloy castings.
FIG. 3 is a view showing an internal structure of a vacuum centrifugal casting chamber.
In the figure: 1-material platform, 2-automatic production signal box, 3-preheating treatment furnace, 4-mechanical clamping jaw, 5-clamping jaw guide rail, 6-quartz cover, 7-casting chamber upper cover, 8-upper cover bracket, 9-electromagnetic valve, 10-vacuum meter, 11-vacuum pump, 12-roller conveying track, 13-lifting heating coil, 14-centrifugal casting chamber, 15-tooling plate, 16-positioning bracket, 17-cooling platform, 18-crucible, 19-crucible bracket, 20-shell pressing plate, 21-elastic pin, 22-rotary disc, 23-adjustable fixed seat, 24-positioning pin, 25-shell, 26-centrifugal casting chamber shell, 27-liquid seal, 28-rotary disc shaft and 29-coupler, 30-electric rotating shaft.
Detailed Description
The technical solutions of the present invention will be described in further detail below with reference to the drawings of the present invention, and it should be understood that the described embodiments are merely illustrative and are not intended to limit the present application.
As shown in figures 1-3, the full-automatic production line for the high-temperature alloy fine-grained castings comprises a preparation area, a vacuum working area 11, a centrifugal casting working area, a cooling table and a disassembly area.
The related main equipment comprises a material platform 1, an automatic production signal box 2, a preheating treatment furnace 3, a plurality of centrifugal casting chambers 14, a roller conveying rail 12 and a mechanical clamping jaw 4, wherein the material platform 1 and the automatic production signal box 2 are located on one side in front of a preparation area, the material platform 1 is used for placing various accessories required by production, and the preheating treatment furnace 3 is located beside a rack of the whole equipment and used for preheating materials such as a shell, a crucible, a bar and a quartz cover.
A clamping jaw guide rail 5 is arranged above the mechanical clamping jaw 4 and used for the forward and backward movement operation of the mechanical clamping jaw 4; the whole process flow is carried out by the mechanical clamping jaws 4 and the roller conveying track 12 according to the instruction sent by the automatic production signal box 2.
The shell 25, the crucible 18, the bar stock, the quartz cover 6 and the like are preheated in advance in a preheating treatment furnace to prevent the crucible 18 and the transparent quartz cover 6 from being cracked due to sudden heating in the subsequent smelting process, the crucible 18 is a disposable zirconium silicate ceramic fiber crucible, the transparent quartz cover 6 is arranged outside the crucible 18, and the state of alloy liquid can be observed. After the mold shell 25 is preheated to the specified temperature (900-.
In the preparation area, the automatic production signalling box 2 gives an instruction, and the mechanical gripper 4 places the disposable crucible with pre-opened bottom, the bar and the transparent quartz cover 6 on the crucible support 19 in sequence, assembles the upper cover 7 of the casting chamber and places it on the upper cover support 8 on the left side. The centrifugal casting chamber shell 26 with the built-in rotary table 22 is placed on the mounting plate of the preparation area in advance, the preheated shell 25 is assembled on the adjustable fixing seat 23 of the rotary table 22 by the mechanical clamping jaw 4, and heat preservation sand is filled.
The shell 25 is fixed on the rotary table 22 by the adjustable fixing seat 23 and the shell press plate 20, the shell press plate 20 is fixed on the rotary table 22 by the positioning pin 24, and the height of the shell press plate 20 can be adjusted by the elastic pin 21. A magnetic fluid seal 27 is arranged between the rotary disc 22 and the centrifugal casting chamber shell 26, so that the rotary disc 22 drives the mould shell 25 to rotate independently. The two sides of the centrifugal casting chamber shell 26 are provided with electromagnetic valves 9 which can be externally connected with a vacuum pump 11. The mechanical gripper 4 then closes the casting chamber cover 7 to form a centrifugal casting chamber 14. The rotating disc shaft 28 of the rotating disc 22 in the centrifugal casting chamber 14 is connected with an electric rotating shaft 30 of a working area through a coupling 29 in a subsequent process, and the rotating disc 22 can drive the shell 25 to rotate in the vacuum centrifugal casting chamber 14 during subsequent pouring.
The assembled centrifugal casting chamber 14 is automatically transported to a vacuum working area through a roller transportation rail 12, a vacuum pump 11 is connected with an electromagnetic valve 9 on a centrifugal casting chamber shell 26 for vacuumizing, and when the number of indications of a vacuum meter 10 reaches a set value (0.1-10 Pa), the electromagnetic valve 9 is automatically closed. The evacuated centrifugal casting chamber 14 is then automatically transported by the drum transport track 12 to the centrifugal casting work area.
The assembly work of the preparation area and the vacuumizing work of the vacuum work area are both streamlined work, and after the previous group of centrifugal casting chambers are conveyed to the vacuum work area, the next group of centrifugal casting chambers begin to be assembled in the preparation area.
In the centrifugal casting work area, the machine jaws 4 hold the centrifugal casting chamber on the tooling plate 15, and the turret shaft 28 is connected to an electrically driven rotating shaft 30 by a coupling 29. The automatic production signal box sends out an instruction, the lifting heating coil 13 above the rack automatically descends under the driving of the driving mechanism, the rapid vacuum induction melting and centrifugal casting processes are carried out, the rapid induction melting adopts a high-power supply, the melting rate can reach 2kg/min, and the lifting heating coil 13 moves from top to bottom to ensure that the bar stock is completely melted and does not cut off when in pouring. During the centrifugal casting process, when the temperature of the molten metal is raised to the liquidus line, the electric rotating shaft 30 is automatically opened, so that the rotating disc 22 and the shell 25 reach the limited rotating speed, and the molten metal automatically flows into a pouring gate from the pre-opening of the crucible 18 after being heated to the pouring temperature. The pouring temperature is 50-200 ℃ higher than the liquidus temperature of the alloy, and is selected particularly between 70-150 ℃; the limited rotating speed is 300-600 r/min, and preferably 400-500 r/min. During pouring and forming, only the rotary disc 22 inside the casting chamber drives the shell 25 to rotate, and the crucible 18 is in a static state, so that the stability of the pouring process is ensured. And in the induction melting and centrifugal casting processes, the next set of centrifugal casting chambers are installed for vacuumizing treatment.
In the process, the moving speed of the induction melting coil plays a very critical role in the whole casting process, if the moving speed is too high, an ingot cannot be fully melted, the superheat degree is low, the viscosity of the alloy liquid is high, the purity of the alloy liquid is reduced, understeer of a thin-wall part is easily caused, and finally, the shrinkage porosity and shrinkage cavity defects are easily caused due to the feeding difference of a solidified part; if the moving speed is too slow, the casting temperature is too high, the heating power and time are increased, and the crystal grains are easily coarsened due to too large temperature gradient.
Therefore, the invention adopts the following mode to control the moving speed of the coil:
in the formula (I), the compound is shown in the specification,
the downward moving speed of the coil is in m/s;
is coil heating power, in units of W;
the unit is m, which is the moving stroke of the coil;
after conversion of the alloy used for castingThe unit of the latent heat of phase change of (A) is J/Kg;
the degree of superheat for the pouring of the alloy used for casting is given in units of;
the liquid specific heat capacity of the alloy used for casting is expressed in J/(Kg DEG C);
the unit is the ingot casting mass and is Kg;
the value range of the heating loss coefficient is 0.3-0.9.
After the casting is formed, the lifting heating coil 13 automatically rises, the whole vacuum centrifugal casting chamber is conveyed to the cooling table 17 by the roller conveying track 12, is positioned by the positioning support 16, and the electromagnetic valve 9 is opened for vacuum breaking and cooling. At the same time, the next set of centrifugal casting chambers, assembled and evacuated, can be immediately transported to the centrifugal casting work area for automatic induction melting.
The cooled centrifugal casting chamber is automatically transported to the disassembly area and the casting is removed by the mechanical gripper 4.
The method realizes the synchronous operation of the vacuum-pumping process and the induction melting process, and greatly improves the production efficiency. The whole process is completed by controlling the mechanical clamping jaw and the roller conveying track by an instruction sent by the automatic production signal box, so that the operation difficulty of workers is reduced, the labor environment is improved, the product quality is ensured, and the product percent of pass is improved. The invention is suitable for preparing various high-temperature alloy fine-grain castings by replacing shells with different shapes and adjusting smelting parameters.
The production line and the process method can prepare various high-temperature alloy fine-grain castings by customizing shells with different shapes and adjusting smelting parameters. The high-temperature alloy turbine casting obtained by the automatic production process has the advantages that the whole structure is formed by fine isometric crystals, the size of the crystal grains is 0.1-1 mm, and the fatigue performance of the product is obviously improved. In addition, the centrifugal action improves the feeding and filling capacity of molten metal, not only ensures the dimensional accuracy of a complex precision casting, but also improves the density of the casting, and reduces the defects of shrinkage porosity, shrinkage cavity, inclusion and the like, thereby prolonging the service life of the product.
The above applications are only some embodiments of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the inventive concept of the present application, which fall within the scope of the appended claims.
Claims (9)
1. A centrifugal casting full-automatic production line for high-temperature alloy castings is characterized by comprising an automatic production signal box, a mechanical clamping jaw, a roller conveying track, a preparation area, a vacuum working area, a centrifugal casting working area, a cooling table and a disassembly area which are sequentially connected;
the automatic production signal box sends various instructions of the whole process flow, and the mechanical clamping jaw and the roller conveying track execute the instructions sent by the automatic production signal box; wherein the drum transport track is used for transporting the centrifugal casting chamber among the preparation area, the vacuum working area, the centrifugal casting working area, the cooling table and the disassembly area;
the preparation area comprises a preheating treatment furnace, a shell for casting, a crucible and a bar are preheated in the preheating treatment furnace in advance, a mechanical clamping jaw takes out the preheated shell, crucible and bar according to an instruction, and a centrifugal casting chamber is assembled, the centrifugal casting chamber comprises a shell, a rotary disc is arranged in the shell, the shell is fixed on the rotary disc through a fixed seat and a shell pressing plate, the rotary disc and the shell of the casting chamber are sealed through magnetic fluid, and electromagnetic valves are arranged on two sides of the shell;
the vacuum working area comprises a vacuum pump, and the vacuum pump is connected with an electromagnetic valve on the shell for vacuumizing;
the centrifugal casting working area comprises a heating coil, a tooling plate and an electric rotating shaft, the heating coil is driven by a driving mechanism to lift and smelt the bar stock in the crucible; the tool plate is used for fixing the vacuumized centrifugal casting chamber, and the electric rotating shaft is connected with the rotating disc shaft through the coupler and drives the rotating disc and the shell in the centrifugal casting chamber to rotate;
the cooling table is used for vacuum breaking cooling of the centrifugal casting after casting;
the disassembly area is used for disassembling the cooled centrifugal casting chamber and taking out the casting.
2. A full automatic production line for centrifugal casting of superalloy castings according to claim 1, wherein the crucible is a disposable alumina silicate ceramic fiber crucible.
3. A fully automated production line for centrifugal casting of superalloy castings according to claim 2, wherein the crucible has a pre-opened bottom.
4. A centrifugal casting full-automatic production line for high-temperature alloy castings according to claim 3, characterized in that the full-automatic production line is a production line and comprises a plurality of groups of centrifugal casting chambers which are operated in sequence.
5. The method for full-automatic centrifugal casting production of high-temperature alloy castings by adopting the production line of claim 4 is characterized by comprising the following steps of:
(1) assembling a centrifugal casting chamber: the automatic production signal box sends an instruction, the mechanical clamping jaw assembles a disposable crucible with a pre-opened bottom, a bar stock and a transparent quartz cover into an upper cover of a casting chamber, a centrifugal casting chamber shell with a rotary disc arranged inside is arranged on a mounting plate of a preparation area in advance, the mechanical clamping jaw assembles a preheated shell onto an adjustable fixing seat of the rotary disc, the shell is fixed on the rotary disc through the adjustable fixing seat and a shell pressing plate, the shell pressing plate is fixed on the rotary disc through a positioning pin, the rotary disc and the casting chamber shell are sealed by magnetic fluid, and electromagnetic valves capable of being externally connected with a vacuum pump are arranged on two sides of the shell; the mechanical clamping jaw covers the upper cover of the casting chamber to form an assembled centrifugal casting chamber;
(2) vacuumizing: the assembled centrifugal casting chamber is automatically transported to a vacuum working area by a roller transportation track, a vacuum pump is connected with an electromagnetic valve on a shell of the centrifugal casting chamber for vacuumizing, and the electromagnetic valve is automatically closed when the vacuum representation number reaches a set value;
(3) centrifugal casting: the centrifugal casting chamber after the vacuum pumping is automatically transported to a centrifugal casting working area by a roller transportation rail; in a centrifugal casting working area, a mechanical clamping jaw fixes the centrifugal casting chamber on a tooling plate, and a turntable shaft is connected with an electric rotating shaft through a coupling; the automatic production signal box sends out an instruction, a heating coil above the rack automatically descends under the driving of the driving mechanism, and fast vacuum induction melting and centrifugal casting processes are carried out, during the centrifugal casting process, when molten metal is heated to a liquidus line, the electric rotating shaft is automatically opened, so that the rotating disc and the shell reach a limited rotating speed, after the temperature of a melt is raised to a pouring temperature, the melt automatically flows into a pouring gate from a pre-opening of the crucible, only the rotating disc in the casting chamber drives the shell to rotate during the pouring and forming processes, and the crucible is in a static state;
(4) and (3) cooling: after the casting is formed, the heating coil automatically rises, the whole vacuum centrifugal casting chamber is transported to a cooling table by a roller transportation rail, and an electromagnetic valve is opened for vacuum breaking and cooling;
(5) the cooled centrifugal casting chamber is automatically transported to a disassembly area and the casting is removed by the mechanical jaws.
6. A method for carrying out the full automatic production of the centrifugal casting of the high-temperature alloy castings according to the claim 5, characterized in that in the step (2), after the centrifugal casting chambers are sent to the vacuum working area, the assembling work of the next group of centrifugal casting chambers is started in the preparation area.
7. The method for fully automatically producing the high-temperature alloy castings through centrifugal casting according to claim 6, wherein in the step (3), the centrifugal casting chambers are in the induction melting and centrifugal casting processes, and the next assembled centrifugal casting chamber group is vacuumized in a vacuum working area.
8. The method for fully automatically producing the centrifugal casting of the high-temperature alloy castings according to claim 7, wherein in the step (3), the bar stock has a melting rate of 2kg/min in the induction melting process.
9. Superalloy castings obtained by the method of any of claims 5 to 8, wherein the superalloy castings are composed of fine equiaxed grains with an average grain size between 0.5 and 1 mm.
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| CN202211029314.5A CN115090850B (en) | 2022-08-26 | 2022-08-26 | Full-automatic production line and production method for centrifugal casting of high-temperature alloy castings |
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| CN202211029314.5A CN115090850B (en) | 2022-08-26 | 2022-08-26 | Full-automatic production line and production method for centrifugal casting of high-temperature alloy castings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117862431A (en) * | 2024-03-13 | 2024-04-12 | 北京航空航天大学 | Online vacuum mechanical stirring pressure-regulating extrusion die casting equipment |
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| CN112935236A (en) * | 2021-01-28 | 2021-06-11 | 纳似韦科技(苏州)有限公司 | Vacuum casting apparatus and method |
| CN114294952A (en) * | 2021-11-11 | 2022-04-08 | 沈阳铸造研究所有限公司 | Rapid casting cold crucible suspension furnace and alloy smelting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003230948A (en) * | 2002-02-08 | 2003-08-19 | Honda Motor Co Ltd | Centrifugal casting device |
| CN102581245A (en) * | 2011-01-11 | 2012-07-18 | 中国科学院金属研究所 | Multifunctional vacuum centrifugal oscillating fine grain melting and casting furnace |
| CN105458207A (en) * | 2015-12-25 | 2016-04-06 | 西安奥邦科技有限责任公司 | Crucible-free rapid induction smelting and casting system |
| CN112935236A (en) * | 2021-01-28 | 2021-06-11 | 纳似韦科技(苏州)有限公司 | Vacuum casting apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117862431A (en) * | 2024-03-13 | 2024-04-12 | 北京航空航天大学 | Online vacuum mechanical stirring pressure-regulating extrusion die casting equipment |
| CN117862431B (en) * | 2024-03-13 | 2024-05-28 | 北京航空航天大学 | Online vacuum mechanical stirring pressure-regulating extrusion die casting equipment |
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