CN106925740A - A kind of centre spinning method of large-scale depleted uranium flywheel - Google Patents
A kind of centre spinning method of large-scale depleted uranium flywheel Download PDFInfo
- Publication number
- CN106925740A CN106925740A CN201511026488.6A CN201511026488A CN106925740A CN 106925740 A CN106925740 A CN 106925740A CN 201511026488 A CN201511026488 A CN 201511026488A CN 106925740 A CN106925740 A CN 106925740A
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- Prior art keywords
- depleted uranium
- mould
- crucible
- scale
- spinning method
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
Abstract
The invention belongs to depleted uranium Parts development technical field, and in particular to a kind of centre spinning method of large-scale depleted uranium flywheel.Prepare a vacuum intermediate-frequency induction melting furnace equipped with centrifugal casting equipment, shell is connected and keeps vacuum with smelting furnace sealing；Processing disc mould, by one layer of Y of mold cavity surfaces brushing2O3Solution paint；Tundish is positioned over into crucible bottom to use cooperatively；Prepare density and be more than 18g/cm3Depleted uranium and Depleted Uranium Alloys material, weight 1000kg；Crucible is loaded into vacuum intermediate-frequency induction melting furnace, crucible is charged material into；To dry to 100 DEG C of mould and load centrifugal casting equipment and fix；Screen tray is assembled to directly over mold center；Centrifugal casting equipment and smelting furnace are sealed into assembling；It is evacuated within 10Pa and starts to send a heating, is heated to the follow-up temperature of continuing rising of fusing；Material is heated to 1450 DEG C~1500 DEG C, is incubated 30min；Motor is opened, is cast according to the speed of 12.5kg/s.Preparation of the present invention suitable for hollow disk-like structure casting, it is possible to increase the consistency of material.
Description
Technical field
The invention belongs to depleted uranium Parts development technical field, and in particular to a kind of centrifugal casting of large-scale depleted uranium flywheel
Make method.
Background technology
Depleted uranium and Depleted Uranium Alloys with density it is big, performance is excellent the characteristics of, according to this feature of high density, can
With as products such as high density accumulated energy flywheels.Inertia balance flywheel high is world three generations nuclear power technology protected type electricity
The key device of dynamic main pump, the design requirement based on nuclear power station main pump operation inertia is, it is necessary to using high density material
Material makes.Its Main Function is the flow that reactor should maintain a period of time after power supply forfeiture, with fully cold
But reactor core.Meanwhile, the forfeiture of component cooling water should not produce influence to running down ability, occur outside factory and in factory
When power supply loses accident and adjoint safe shutdown earthquake, the running down ability of main pump should also keep.In order to meet this
It is required that, every main pump should be equipped with flywheel and the larger rotor of inertia, and total rotary inertia is used to maintain the running down phase
Between coolant flow.Because the size of product is larger, requirement of the general casting method to equipment is higher, by
It is the very big sheet products of diameter in casting, the defect such as stomata, loose is readily formed in casting process.
The content of the invention
It is an object of the invention to provide a kind of centre spinning method of large-scale depleted uranium flywheel, it is adaptable to hollow
The preparation of disk-like structure casting, it is possible to increase the consistency of material, does not produce stomata, shrinkage cavity, loose etc. to lack
Fall into, ensure that the performance requirement of casting.
To reach above-mentioned purpose, the technical solution used in the present invention is：
A kind of centre spinning method of large-scale depleted uranium flywheel, comprises the following steps：
Step 1, prepares a vacuum intermediate-frequency induction melting furnace equipped with centrifugal casting equipment, centrifugal casting equipment
Including shell, pressing plate, mould, base, motor；Shell is connected and keeps vacuum with smelting furnace sealing, presses
Plate fixing mould, base places mould and and motor connection；
Step 2, processes disc mould, by one layer of Y of mold cavity surfaces brushing2O3Solution paint, is put into
Drying is to 100 DEG C in drying oven；
Step 3, preparation can fill 1000kg and be more than 18g/cm with upper density3The earthenware of depleted uranium and Depleted Uranium Alloys material
Crucible；Inner surface of crucible plasma thermal sprayed mode is sprayed the ZrO of a layer thickness 0.3mm~0.5mm2Coating,
Drying is to more than 60 DEG C；Tundish is positioned over into crucible bottom to use cooperatively；
Step 4, material prepares, and prepares density and is more than 18g/cm3Depleted uranium and Depleted Uranium Alloys material, weight
1000kg；
Step 5, vacuum intermediate-frequency induction melting furnace is loaded by crucible, charges material into crucible；To dry to 100 DEG C
Mould load centrifugal casting equipment and fixation；Screen tray is assembled to directly over mold center；By centrifugal casting
Device seals assembling with smelting furnace；It is evacuated within 10Pa, starts to send a heating, is heated to fusing follow-up
Temperature of continuing rising；Material is heated to 1450 DEG C~1500 DEG C, is incubated 30min；
Step 6, after insulation terminates, opens motor, is cast according to the speed of 12.5kg/s, i.e., when with 80min
Between uniform complete 1000kg materials；Motor stops after being rotated further 5min after casting, and blow-on is taken out after cooling
Casting.
Described vacuum intermediate-frequency induction melting furnace melting amount be more than 1000kg, vacuum degree of cold state reach 1Pa with
It is interior.
Described centrifugal casting equipment maximum speed 700r/min.
Described power of motor is more than 3kw, and rotating speed is more than 300r/min.
Described mold material be graphite, dies cavity diameter 1100mm~1200mm, thickness 60mm~
80mm。
Described crucible material is graphite.
Described motor speed is set to 200r/min~300r/min, smooth rotation 1min~3min.
Having the beneficial effect that acquired by the present invention：
Large-scale depleted uranium centrifugal casting external diameter of the invention obtained be 1100mm~1200mm, internal diameter 580mm~
600mm, thickness 60mm~80mm, weight about 1000kg, its density >=8g/cm3, it is machined after
Can be used for the development of large-scale balance accumulated energy flywheel.
Brief description of the drawings
Fig. 1 is centrifugal casting equipment structural representation；
Fig. 2 is mould crucible assembling schematic diagram；
In figure：1st, shell；2nd, pressing plate；3rd, mould；4th, base；5th, motor；6th, crucible；7th, pour
Cup；8th, screen tray.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of centre spinning method of large-scale depleted uranium flywheel, comprises the following steps：
Step 1, equipment prepares, and prepares a vacuum intermediate-frequency induction melting furnace equipped with centrifugal casting equipment, melts
Refining amount is more than 1000kg, and equipment vacuum degree of cold state can reach within 1Pa.
As shown in figure 1, centrifugal casting equipment maximum speed 700r/min, including shell 1, pressing plate 2, mould
3rd, base 4, motor 5；Shell 1 is connected and keeps vacuum with smelting furnace sealing, and the power of motor 5 is more than 3kw,
Rotating speed is more than 300r/min.Pressing plate 2 be used for fixing mould 3, base 4 be used for place mould 3 and with motor 5
Connection, coordinates ready centrifugal casting equipment and melting furnace sealing before work.
Step 2, mould 3 prepares
Step 2.1, mould 3 is processed, and mould 3 is disc, and material is graphite, the intracavity diameter of mould 3
1100mm~1200mm, thickness 60mm~80mm.
Step 2.2, mould 3 is processed, by 3 surface of internal cavity brushing of mould, one layer of Y2O3Solution paint, is put into
Drying is stand-by to 100 DEG C or so in drying oven.
Step 3, crucible prepares
Step 3.1, preparation can fill 1000kg and be more than 18g/cm with upper density3The earthenware of depleted uranium and Depleted Uranium Alloys material
Crucible 6, the material of crucible 6 is graphite.
Step 3.2, a layer thickness about 0.3mm~0.5mm is sprayed by the inner surface plasma thermal sprayed mode of crucible 6
ZrO2Coating, dries to more than 60 DEG C, stand-by.
Step 3.3, is positioned over tundish 7 bottom of crucible 6 and uses cooperatively；
Step 4, material prepares, and prepares density and is more than 18g/cm3Depleted uranium and Depleted Uranium Alloys material, weight
1000kg。
Step 5, shove charge melting
Crucible 6 is loaded vacuum intermediate-frequency induction melting furnace by step 5.1, shove charge, charges material into crucible 6；
Step 5.2, die-filling tool 3 will dry to 100 DEG C or so of mould 3 and load centrifugal casting equipment and consolidate
It is fixed；Screen tray 8 is assembled to directly over the center of mould 3；Centrifugal casting equipment and smelting furnace are sealed into assembling；
Step 5.3, vacuumizes, and to 10Pa, starts to send a heating, is heated to the follow-up temperature of continuing rising of fusing；
Step 5.4, material is heated to 1450 DEG C~1500 DEG C, is incubated 30min；
Step 6, casting
Step 6.1, after insulation terminates, unlatching motor 5, speed setting to 200r/min~300r/min, steadily
Rotate 1min~3min.
Step 6.2, casting is cast according to the speed of 12.5kg/s, i.e., uniformly complete 1000kg with the 80min times
Material；
Step 6.3, motor 5 stops after being rotated further 5min after casting, and casting is taken out in blow-on after cooling.
Claims (7)
1. a kind of centre spinning method of large-scale depleted uranium flywheel, it is characterised in that：Comprise the following steps：
Step 1, prepares a vacuum intermediate-frequency induction melting furnace equipped with centrifugal casting equipment, centrifugal casting equipment
Including shell (1), pressing plate (2), mould (3), base (4), motor (5)；Shell (1) and melting
Stove sealing be connected and keep vacuum, pressing plate (2) fixing mould (3), base (4) place mould (3) and
It is connected with motor (5)；
Step 2, processing disc mould (3), by one layer of Y of mould (3) surface of internal cavity brushing2O3Solution
Coating, is put into drying oven and dries to 100 DEG C；
Step 3, preparation can fill 1000kg and be more than 18g/cm with upper density3The earthenware of depleted uranium and Depleted Uranium Alloys material
Crucible (6)；Crucible (6) inner surface plasma thermal sprayed mode is sprayed into a layer thickness 0.3mm~0.5mm
ZrO2Coating, dries to more than 60 DEG C；Tundish (7) is positioned over into crucible (6) bottom to use cooperatively；
Step 4, material prepares, and prepares density and is more than 18g/cm3Depleted uranium and Depleted Uranium Alloys material, weight
1000kg；
Step 5, vacuum intermediate-frequency induction melting furnace is loaded by crucible (6), charges material into crucible (6)；Will
Dry to 100 DEG C of mould (3) and load centrifugal casting equipment and fix；Screen tray (8) is assembled to mould (3)
Directly over center；Centrifugal casting equipment and smelting furnace are sealed into assembling；It is evacuated within 10Pa, starts to send
Point heating, is heated to the follow-up temperature of continuing rising of fusing；Material is heated to 1450 DEG C~1500 DEG C, is incubated 30min；
Step 6, after insulation terminates, opens motor (5), is cast according to the speed of 12.5kg/s, i.e., with 80min
Time uniformly completes 1000kg materials；Motor (5) stops after being rotated further 5min after casting, is opened after cooling
Stove takes out casting.
2. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
The vacuum intermediate-frequency induction melting furnace melting amount stated is more than 1000kg, and vacuum degree of cold state is reached within 1Pa.
3. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
The centrifugal casting equipment maximum speed 700r/min for stating.
4. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
Motor (5) power stated is more than 3kw, and rotating speed is more than 300r/min.
5. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
Mould (3) material stated be graphite, mould (3) intracavity diameter 1100mm~1200mm, thickness 60mm~
80mm。
6. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
Crucible (6) material stated is graphite.
7. the centre spinning method of large-scale depleted uranium flywheel according to claim 1, it is characterised in that：Institute
Motor (5) speed setting stated is to 200r/min~300r/min, smooth rotation 1min~3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511026488.6A CN106925740A (en) | 2015-12-31 | 2015-12-31 | A kind of centre spinning method of large-scale depleted uranium flywheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511026488.6A CN106925740A (en) | 2015-12-31 | 2015-12-31 | A kind of centre spinning method of large-scale depleted uranium flywheel |
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| Publication Number | Publication Date |
|---|---|
| CN106925740A true CN106925740A (en) | 2017-07-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511026488.6A Pending CN106925740A (en) | 2015-12-31 | 2015-12-31 | A kind of centre spinning method of large-scale depleted uranium flywheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842845A (en) * | 2020-07-31 | 2020-10-30 | 吉林大学 | Multifunctional special casting smelting furnace and application thereof |
| CN115874072A (en) * | 2021-09-29 | 2023-03-31 | 中核北方核燃料元件有限公司 | Preparation method of ray shielding material of electron irradiation accelerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5056317A (en) * | 1973-09-19 | 1975-05-17 | ||
| CN103056323A (en) * | 2012-12-12 | 2013-04-24 | 青岛三合山精密铸造有限公司 | Centrifugal casting method of flange casting piece |
| CN103231037A (en) * | 2013-04-24 | 2013-08-07 | 江苏双勤民生冶化设备制造有限公司 | Method for manufacturing short transitional section |
| CN103752789A (en) * | 2013-12-31 | 2014-04-30 | 吴江亿泰真空设备科技有限公司 | Centrifugal smelting casting furnace |
| CN203936343U (en) * | 2014-07-01 | 2014-11-12 | 马鞍山方圆动力科技有限公司 | A kind of traditional vacuum apparatus for pouring |
-
2015
- 2015-12-31 CN CN201511026488.6A patent/CN106925740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5056317A (en) * | 1973-09-19 | 1975-05-17 | ||
| CN103056323A (en) * | 2012-12-12 | 2013-04-24 | 青岛三合山精密铸造有限公司 | Centrifugal casting method of flange casting piece |
| CN103231037A (en) * | 2013-04-24 | 2013-08-07 | 江苏双勤民生冶化设备制造有限公司 | Method for manufacturing short transitional section |
| CN103752789A (en) * | 2013-12-31 | 2014-04-30 | 吴江亿泰真空设备科技有限公司 | Centrifugal smelting casting furnace |
| CN203936343U (en) * | 2014-07-01 | 2014-11-12 | 马鞍山方圆动力科技有限公司 | A kind of traditional vacuum apparatus for pouring |
Non-Patent Citations (1)
| Title |
|---|
| 柳百成等: "《中国材料工程大典 第19卷 材料铸造成形工程》", 31 January 2006, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842845A (en) * | 2020-07-31 | 2020-10-30 | 吉林大学 | Multifunctional special casting smelting furnace and application thereof |
| CN115874072A (en) * | 2021-09-29 | 2023-03-31 | 中核北方核燃料元件有限公司 | Preparation method of ray shielding material of electron irradiation accelerator |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
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