CN207749170U - A kind of preparation facilities of used by nuclear reactor lead bismuth alloy - Google Patents
A kind of preparation facilities of used by nuclear reactor lead bismuth alloy Download PDFInfo
- Publication number
- CN207749170U CN207749170U CN201721474124.9U CN201721474124U CN207749170U CN 207749170 U CN207749170 U CN 207749170U CN 201721474124 U CN201721474124 U CN 201721474124U CN 207749170 U CN207749170 U CN 207749170U
- Authority
- CN
- China
- Prior art keywords
- bismuth alloy
- lead bismuth
- intermediate frequency
- lead
- nuclear reactor
- 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.)
- Expired - Fee Related
Links
- 229910001152 Bi alloy Inorganic materials 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000005266 casting Methods 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000010926 purge Methods 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 description 14
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 14
- 239000007788 liquid Substances 0.000 description 10
- 238000013019 agitation Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005204 segregation Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model provides a kind of preparation facilities of used by nuclear reactor lead bismuth alloy, and preparation process includes the following steps：1）Dispensing；2）Nitrogen purges crucible and dispensing in stove；3）Under nitrogen protection device, start intermediate frequency furnace melted alloy；4）When casting, cast using lead bismuth alloy casting die.Its preparation facilities includes intermediate frequency furnace and lead bismuth alloy casting die, lead bismuth alloy casting die exterior arrangement has water-cooling jacket, sprue gate configures coil heating apparatus, and sprue gate configures hydraulic stem with the stabilization of crystallization process after stable cast, it is ensured that lead bismuth alloy is not segregated；Device structure required for the utility model is simple, is not necessarily to vacuum melting and vacuum casting.
Description
Technical field
The utility model belongs to the preparation dress of metal material processing field more particularly to a kind of used by nuclear reactor lead bismuth alloy
It sets.
Background technology
Lead bismuth alloy is a kind of alloy for nuclear reactor cooling system, and stringent in addition to requiring impurity, alloy phase is not
Must be with the presence of segregation, and shrinkage cavity cannot occur in alloy pig.
On 08 25th, 2011, Chinese invention patent application publication No. CN102304632A disclosed a kind of nuclear reactor
With the preparation method of lead bismuth alloy, using vacuum induction melting, 1) raw material lead is placed in the crucible in glove box, it is heated to
450~800 DEG C, logical high-purity hydrogen is pre-processed；2) crucible is passivated processing；3) by being designed to layer charging, lead cold charge in
In crucible, bismuth is loaded on hopper；4) mixed gas (2~7v% of hydrogen content) of 0.1~10Pa of vacuum degree applying argon gas and hydrogen is extremely
0.01~0.5Mpa, 400~600 DEG C of fusion temperature；5) raw material bismuth is added batch-wise, and electromagnetic agitation is taken mutually to be tied with mechanical agitation
The mode of conjunction stirs；6) direct-reading spectrometer detects alloying component and augments alloying element according to test result；7) after ingredient qualification
It pours into a mould under vacuum, 200~400 DEG C of pouring temperature.But it is molten to need to use vacuum for the lead bismuth alloy that the utility model is produced
Refining and vacuum casting, can not carry out large-scale production, and equipment manufacturing cost is very high.
On November 24th, 2014, Chinese invention patent application publication No. CN104404296A disclose a kind of nuclear reactor
With the preparation method of lead bismuth alloy；This method, using high purity lead and high purity bismuth as raw material, is adopted in high-purity argon gas environment before melting
It is sufficiently mixed treatment process with lead powder and bismuth meal, Electromagnetic Continuous stirring and batch feed technique are used in fusion process, to ensure
Main component is uniformly mixed and process safety；Smelting furnace and mold reduce the introducing of impurity, carry using preceding starting the cleaning processing
The high purity of target product；The gravity segregation that bismuth element is reduced using unique casting mould, ensures the uniformity of bi content, makes
The lead bismuth alloy of standby high quality.And this method uses metal powder for raw material, in the wind for having in processing procedure and increasing and aoxidizing that is milled
Danger, and mechanical agitation is needed, it is higher to equipment configratioin requirement.
Utility model content
The technology of the utility model solves the problems, such as：Overcome the deficiencies of the prior art and provide a kind of used by nuclear reactor lead bismuth conjunction
The preparation facilities of gold, this method prepare high pure lead bismuth alloy, solve the problems, such as oxygenation, carburetting during alloy melting.
The technical solution of the utility model is：A kind of preparation facilities of used by nuclear reactor lead bismuth alloy, including Medium frequency induction
Stove and lead bismuth alloy casting die, the crucible bottom of the intermediate frequency furnace and top are laid with high pressure nitrogen spray gun composition
Nitrogen protection device；The lead bismuth alloy casting die is made of mold, sprue gate, closure and hydraulic stem；Outside mold
It is enclosed with water-cooling jacket, sprue gate is located at center right over mold, and leads to cavity；Sprue gate is fixedly arranged above cast and leads
Pipe, cast conduit outer wall are equipped with intermediate frequency coil heating device；It pours into a mould configuration in conduit to block, blocking top has hydraulic stem.
Compared with prior art, following several respects are embodied in the advantages of the utility model：
1, unique lead bismuth alloy casting die is used, the pressure that hydraulic stem imposes 3 MPa is configured above sprue gate；One
Aspect can increase casting matrix and effective contact water cooling of mold follows heat exchange；To accelerate the crystallization rate after casting, it is ensured that do not send out
The gravity segregation of raw bismuth element, ensures the uniformity of bi content in finished product lead bismuth alloy.On the other hand it can also overcome casting matrix
The chilling on surface shrinks generated internal stress；To stablize crystallization process after casting, it is ensured that casting is internal not to form crack defect,
It is further ensured that the total quality of finished product lead bismuth alloy；
2, intermediate frequency coil heating is set using the cast conduit outer wall above sprue gate, on the one hand solves Quick pouring and exists
On the other hand the problem of sprue gate premature set, also prevents from blocking the lead bismuth alloy liquid fast knot with sprue gate section, is conducive to transmit
The pressure of hydraulic stem;
3, using the nitrogen protection of purity 99.99~99.999%, it is suppressed that the volatilization of lead and bismuth reduces target product
Middle oxygen content；Purge before crucible for smelting reduces the introducing of impurity, improves the purity of target product；
4, the utility model smelting technology repeatability is high, and the lead bismuth alloy purity of preparation is high, has reached design requirement, can
To realize large-scale industrial production.
Description of the drawings
Fig. 1 is lead bismuth alloy casting die structure chart described in the utility model.
Fig. 2 is the vertical view of Fig. 1.
In figure：1 mold；2 sprue gates；3 block；4 hydraulic stems；5 water-cooling jackets；6 cavities；7 cast conduits；8 intermediate frequency lines
Circle；9 casting matrixs.
Specific implementation mode
The utility model is described in detail with reference to embodiment, but it is limitations of the present invention that this, which is not,
Those skilled in the art's basic thought according to the present utility model, can make various modifications or improvements, but without departing from
The basic thought of the utility model, within the scope of the utility model.
Embodiment
A kind of preparation facilities of used by nuclear reactor lead bismuth alloy, including intermediate frequency furnace and lead bismuth alloy casting die；Institute
The crucible bottom for the intermediate frequency furnace stated and top are laid with high pressure nitrogen spray gun and constitute nitrogen protection device；The lead bismuth closes
Golden casting die is by mold（1）, sprue gate（2）, block（3）And hydraulic stem（4）Composition；Mold（1）Outside is enclosed with water
Cold chuck（5）, sprue gate（2）Positioned at mold（1）Surface center, and lead to cavity（6）；Sprue gate（2）It is fixedly arranged above
Pour into a mould conduit（7）, pour into a mould conduit（7）Outer wall is equipped with intermediate frequency coil（8）Heating device；Pour into a mould conduit（7）Interior configuration blocks（3）,
It blocks（3）There is hydraulic stem in top（4）.
The intermediate frequency coil（8）Heating frequency control within the scope of 1800 ± 10Hz.
A kind of preparation process of used by nuclear reactor lead bismuth alloy, includes the following steps：
1）Dispensing is carried out to lead pig and bismuth ingot by designed ingredient, is put into the crucible of intermediate frequency furnace；Lead pig used
For national standard lead pig, bismuth ingot used is the low high-purity bismuth ingot of lead of low silver, and silver, lead impurity content are less than 250ppm；
2）Nitrogen protection device is opened to purge crucible in stove and dispensing together, nitrogen pressure about 0.01~
0.1Mpa；The mass percent of the nitrogen gas purity is 99.99~99.999%；
3）It is continual in nitrogen protection device gas supply, start intermediate frequency furnace, start to warm up, fusion temperature is protected
It holds at 400~500 DEG C, after alloy all fusing, the frequency of intermediate frequency furnace is turned up, and in the spray up and down of bottom and top nitrogen
It blows down, lead bismuth alloy liquid is made to roll in stove, carry out homogenization stirring；Mixing time 10~30 minutes, then turns down frequency, accurate
Standby casting；
4）When casting, using lead bismuth alloy casting die, Water-cooling circulating is first opened, is then cast, when lead bismuth alloy liquid pours
Full cavity（6）Afterwards, with closure（3）Cast gate is sealed, hydraulic stem is then used（4）Pass through closure（3）3 MPa are imposed to lead bismuth alloy liquid
Pressure, until lead bismuth alloy completely be cooled and shaped be casting matrix（9）, complete casting.
The heating melting frequency of the intermediate frequency furnace controls within the scope of 1900 ± 10Hz；Lead bismuth alloy liquid is set to roll
FREQUENCY CONTROL is within the scope of 2400 ± 10HZ；Make the FREQUENCY CONTROL of lead bismuth alloy liquid heat preservation casting within the scope of 1700 ± 10HZ.
The principle of the present embodiment：By the way of intermediate frequency furnace melting, nitrogen purging is carried out to crucible before melting；Melting
In be carried out at the same time nitrogen protection, and make the thinning cooperation nitrogen of lead bismuth alloy liquid viscosity or more using intermediate frequency furnace control temperature
Stirring；The electromagnetic agitation and mechanical agitation for saving the prior art reduce oxidation and pollution of the stirring foreign matter to lead bismuth alloy liquid,
Ensure the absolute safety of melting production process.
When casting, Water-cooling circulating is first opened, after liquid lead bismuth alloy injects lead bismuth alloy casting die, liquid lead bismuth is closed
It is golden to flow into cavity with lead bismuth alloy casting die on one side（6）It is water cooled chuck（5）It is cooling, it is press-formed into casting matrix on one side（9）,
The gravity segregation phenomenon that bismuth element can be reduced in this way, is further ensured that casting matrix（9）The uniformity of middle bi content, is met
It is required that lead bismuth alloy ingot casting.
Claims (2)
1. a kind of preparation facilities of used by nuclear reactor lead bismuth alloy, including intermediate frequency furnace and lead bismuth alloy casting die；It is special
Sign is：The crucible bottom of the intermediate frequency furnace and top are laid with high pressure nitrogen spray gun and constitute nitrogen protection device；
The lead bismuth alloy casting die is by mold（1）, sprue gate（2）, block（3）And hydraulic stem（4）Composition；Mold（1）Outside
Portion is enclosed with water-cooling jacket（5）, sprue gate（2）Positioned at mold（1）Surface center, and lead to cavity（6）；Sprue gate（2）
It is fixedly arranged above cast conduit（7）, pour into a mould conduit（7）Outer wall is equipped with intermediate frequency coil（8）Heating device；Pour into a mould conduit（7）Inside match
Set closure（3）, block（3）There is hydraulic stem in top（4）.
2. a kind of preparation facilities of used by nuclear reactor lead bismuth alloy according to claim 1, it is characterised in that：The intermediate frequency
Coil（8）Heating frequency control within the scope of 1800 ± 10Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474124.9U CN207749170U (en) | 2017-11-08 | 2017-11-08 | A kind of preparation facilities of used by nuclear reactor lead bismuth alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474124.9U CN207749170U (en) | 2017-11-08 | 2017-11-08 | A kind of preparation facilities of used by nuclear reactor lead bismuth alloy |
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| Publication Number | Publication Date |
|---|---|
| CN207749170U true CN207749170U (en) | 2018-08-21 |
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| CN201721474124.9U Expired - Fee Related CN207749170U (en) | 2017-11-08 | 2017-11-08 | A kind of preparation facilities of used by nuclear reactor lead bismuth alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574323A (en) * | 2017-11-08 | 2018-01-12 | 湖南金旺铋业股份有限公司 | A kind of preparation technology and preparation facilities of used by nuclear reactor lead bismuth alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574323A (en) * | 2017-11-08 | 2018-01-12 | 湖南金旺铋业股份有限公司 | A kind of preparation technology and preparation facilities of used by nuclear reactor lead bismuth alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20211108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |