CN114195397A - Glass-metal sealing material for conductor assembly of pressurized water reactor electrical penetration assembly and preparation method - Google Patents
Glass-metal sealing material for conductor assembly of pressurized water reactor electrical penetration assembly and preparation method Download PDFInfo
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- CN114195397A CN114195397A CN202111563880.XA CN202111563880A CN114195397A CN 114195397 A CN114195397 A CN 114195397A CN 202111563880 A CN202111563880 A CN 202111563880A CN 114195397 A CN114195397 A CN 114195397A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 51
- 239000002184 metal Substances 0.000 title claims abstract description 51
- 239000004020 conductor Substances 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000003566 sealing material Substances 0.000 title claims abstract description 25
- 230000035515 penetration Effects 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000000498 ball milling Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005469 granulation Methods 0.000 claims abstract description 7
- 230000003179 granulation Effects 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 239000011230 binding agent Substances 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000005337 ground glass Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 239000007770 graphite material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000004017 vitrification Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000005394 sealing glass Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C29/00—Joining metals with the aid of glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
-
- 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
Abstract
The invention discloses a glass-metal sealing material for a conductor assembly of an electrical penetration assembly of a pressurized water reactor and a preparation method thereof, wherein the glass-metal sealing material is weighed according to a set glass material proportion and is prepared by uniformly mixing raw materials of all components to obtain a batch mixture; the batch comprises the following components in percentage by weight based on oxides: SiO 22:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO20 to 1%, CoO: 0 to 1 percent. Melting the batch at 1550-1650 ℃, and quenching to obtain the productAnd carrying out spray granulation on the glass slag after ball milling to obtain granulated powder with a certain particle size and sphericity. Pressing and molding the granulated powder into a glass blank with a required shape, and placing the glass blank at a certain temperature for glue discharging and vitrification to obtain the prefabricated glass bead. And (3) sealing the metal shell, the metal conductor and the prefabricated glass beads in an atmosphere furnace after the metal shell, the metal conductor and the prefabricated glass beads are assembled to obtain the glass-metal sealed electric penetration piece conductor assembly. The conductor assembly prepared by the method has the characteristics of high air tightness, high insulativity, irradiation resistance, flame retardance and the like.
Description
Technical Field
The invention relates to the technical field of nuclear reaction safety, in particular to a glass-metal sealing material for a conductor assembly of an electrical penetration assembly of a pressurized water reactor and a preparation method thereof.
Background
The pressurized water reactor is called as 'pressurized water moderated cooling reactor'. A reactor with pressurized, non-boiling light water (i.e., plain water) as the moderator and coolant. The reactor consists of a fuel assembly, a moderator (which also serves as a coolant), a control rod assembly, a burnable poison assembly, a neutron source assembly, a reactor core hanging basket, a pressure shell and the like, and belongs to a reactor type with more application quantity and larger capacity in a nuclear power station.
The pressurized water reactor electrical penetration assembly is a special electrical device which is arranged on a containment vessel and used for a cable to penetrate through the containment vessel, and under normal and various accident working conditions, the electrical penetration assembly can ensure the integrity of the containment vessel, prevent radioactive substances from leaking out, and maintain the continuity of electrical signals in the containment vessel. The main functional components of the electric penetration piece comprise a conductor component and a cylinder component, the conductor component penetrates through the whole cylinder component to realize physical connection of various cables inside and outside the containment, and the electric penetration piece and the cylinder component of the penetration piece realize the integrity of the pressure boundary of the containment together while realizing the functions of electric connection and signal transmission.
The electrical penetration conductor assembly mainly comprises a metal shell, a metal conductor and a sealing material, wherein the type of the sealing material mainly comprises high polymer, glass and ceramic, and the metal shell and the metal conductor are sealed by the sealing material, so that the selection of the sealing material determines the performance of the electrical penetration conductor assembly. At present, the polymer sealing material is most widely used in the pressurized water reactor electrical penetration assembly.
Although the polymer sealing material can meet the strict standards of the electric penetration assembly in all properties, the polymer material is difficult to avoid aging phenomena such as embrittlement, creep and the like during long-term operation and service life prolonging operation, and risks of losing sealing and insulating functions when high-temperature high-humidity high-irradiation accidents occur after aging. And the glass-metal sealing material is used for replacing a high polymer sealing material used in the electric penetration piece conductor assembly, so that the sealing performance of the pressure boundary under the limit working condition can be improved, and the risk of radioactive leakage after an accident is reduced. Thus, glass-to-metal sealed electrical feedthrough conductor assemblies are a safer and more reliable option.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a glass-metal sealing material for a conductor assembly of an electric penetration piece of a pressurized water reactor and a preparation method thereof. The electric penetration piece prepared by the method has the characteristics of high air tightness, high insulativity, irradiation resistance, flame retardance and the like, so that the defects of the material in the conductor assembly of the high-molecular sealing electric penetration piece are overcome.
The technical scheme adopted by the invention for solving the technical problem is as follows: a glass-metal sealing material for a pressurized water reactor electrical penetration conductor assembly, which mainly comprises a metal shell, a metal conductor and a sealing material, wherein the sealing material is a glass material, and the glass material comprises the following components in percentage by weight on the basis of oxides: SiO 22:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO20 to 1%, CoO: 0-1%, and the sum of all the components is 100%.
Furthermore, the material of the metal shell is 06Cr19Ni10 stainless steel.
Furthermore, the metal conductor is made of oxygen-free copper.
Furthermore, the expansion coefficient of the glass material is 170-180 multiplied by 10-7/K。
A method of making a glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly, the method comprising the steps of:
step (1), weighing raw material SiO according to glass proportion2:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO20 to 1%, CoO: 0-1%, putting the raw materials into a V-shaped mixer, and mixing for 30-40 min;
step (2), preserving the heat of the uniformly mixed raw materials at 1550-1650 ℃ for 80-100 min, carrying out high-temperature melting, and carrying out water quenching to obtain glass slag;
step (3), ball-milling the glass slag in a planet ball mill, adding grinding balls according to a material-ball ratio of 1: 0.8-1, and ball-milling for 100-120 min; sieving the ground glass powder, and taking the glass powder below a 150-mesh sieve for later use;
dispersing the glass powder sieved by a 150-mesh sieve in a liquid phase consisting of a solvent, a dispersing agent and a binder, adding grinding balls, and performing ball milling for 100-120 min to obtain glass powder slurry; the mass ratio of the glass powder to the solvent to the dispersant to the binder to the grinding balls is 110: 70-76: 0.8-1.2: 11-14: 165-180;
step (5), placing the glass powder slurry in a spray granulation tower for spray granulation, sieving the obtained granulated powder, and taking the granulated powder of 80-200 meshes for later use;
preparing the granulated powder into a required glass blank by compression molding, carrying out binder removal on the glass blank at the temperature of 360-600 ℃, and vitrifying the glass blank at the temperature of 650-700 ℃ to obtain required glass beads;
and (7) assembling the metal shell, the glass beads, the metal conductor and the sintering mold together, putting the metal shell, the glass beads, the metal conductor and the sintering mold into an atmosphere sintering furnace, introducing nitrogen, and preserving heat at 960-980 ℃ for 15-20 min for sealing.
Further, in the step (4), the solvent is deionized water, the dispersant is sodium polyacrylate, the binder is polyethylene glycol, and the grinding balls are zirconia balls with the diameter of 5 mm.
Further, in the step (7), the sintering mold is made of graphite material.
The invention has the beneficial effects that: compared with the prior art, the glass-metal sealing material for the conductor assembly of the electric penetration piece of the pressurized water reactor and the preparation method thereof provided by the invention have the advantages that the difference of the expansion coefficients of the sealing glass, the metal shell and the contact pin prepared by the method is within 10%, and the matched sealing can be realized. The matching sealing has the advantages that the stress in a sealing system can be controlled within a safe range, and the sealing glass cannot generate cracks, bubbles and other defects due to overlarge stress, so that the conductor component sealed by the sealing material prepared by the invention has high air tightness. Meanwhile, the formula of the sealing glass designed by the invention is a high borosilicate glass system, the content of alkali metal oxide is relatively low, and the influence on the conductivity of the whole glass system is small, so that a conductor component sealed by the sealing material prepared by the invention has high insulation, and compared with a high polymer material, the glass material of the system has better stability at high temperature and more excellent flame retardance. The formula is also added with rare earth oxide cerium oxide, so that the irradiation resistance of the glass material can be improved. Therefore, the conductor assembly sealed by the sealing material has the characteristics of high air tightness, high insulation, irradiation resistance, flame retardance and the like.
Drawings
Fig. 1 is a schematic sealing diagram of a coaxial conductor assembly according to the present invention.
Wherein, 1-metal shell; 2-a metal conductor; 3-sealing material.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples 1 to 4
1) Weighing raw material SiO according to glass proportion2:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO20 to 1%, CoO: 0-1%, putting the raw materials into a V-shaped mixer, and mixing for 30-40 min;
2) the uniformly mixed raw materials are subjected to heat preservation at 1600 ℃ for 100min for high-temperature melting, and water quenching is carried out to obtain glass slag;
3) and (3) ball-milling the glass slag in a planetary ball mill, adding grinding balls according to the material-ball ratio of 1:0.8, and ball-milling for 120 min. Sieving the ground glass powder, and taking the glass powder below a 150-mesh sieve for later use;
4) dispersing glass powder sieved by a 150-mesh sieve in a liquid phase consisting of a solvent, a dispersing agent and a binder, adding grinding balls, and performing ball milling for 100min to obtain glass powder slurry, wherein the mass ratio of the glass powder to the solvent to the dispersing agent to the binder to the grinding balls is 110:76:1:13: 165;
5) and (3) placing the glass powder slurry into a spray granulation tower for spray granulation, sieving the obtained granulated powder, and taking the granulated powder of 80-200 meshes for later use.
6) Pressing and forming are utilized to prepare the granulated powder into a required glass blank, the glass blank is subjected to binder removal at the temperature of 360-600 ℃, and the glass blank is vitrified at the temperature of 650-700 ℃.
7) Assembling a metal shell 1, prefabricated glass beads serving as a sealing material 3, a metal conductor 2 and a sintering mold together, putting the metal shell, the prefabricated glass beads, the metal conductor and the sintering mold into an atmosphere sintering furnace, introducing nitrogen, and preserving heat at 960-980 ℃ for 20min for sealing.
The glass-metal sealed conductor component is tested for performances such as gas leakage rate, insulation resistance, voltage resistance value, pressure resistance value and the like, wherein the gas leakage rate is measured by a helium mass spectrometer leak detector, the insulation resistance is measured by an insulation resistance tester, the voltage resistance value is measured by a voltage resistance tester, and the pressure resistance value is measured by a high-temperature logging pressure test box. The above performance test data is summarized in the following table:
the above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (7)
1. A glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly, comprising: the conductor assembly of the pressurized water reactor electrical penetration assembly mainly comprises a metal shell, a metal conductor and a sealing material, wherein the sealing material is a glass material, and the glass material comprises the following components in percentage by weight based on oxides: SiO 22:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO2:0～1％，CoO：0～1％。
2. The glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly of claim 1, wherein: the metal shell is made of 06Cr19Ni10 stainless steel.
3. The glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly of claim 1, wherein: the metal conductor is made of oxygen-free copper.
4. The glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly of claim 1, wherein: the expansion coefficient of the glass material is 170-180 multiplied by 10-7/K。
5. A method of making a glass-to-metal seal material for a pressurized water reactor electrical feedthrough conductor assembly, the method comprising the steps of:
step (1), weighing raw material SiO according to glass proportion2:50～70％、B2O3:8～13％、Al2O3:4～8％、Na2O:3～8％、CeO2:2～4％、K2O:0～2％、TiO2:0～2％、CaO:0～2％、ZrO20 to 1%, CoO: 0-1%, putting the raw materials into a V-shaped mixer, and mixing for 30-40 min;
step (2), preserving the heat of the uniformly mixed raw materials at 1550-1650 ℃ for 80-100 min, carrying out high-temperature melting, and carrying out water quenching to obtain glass slag;
step (3), ball-milling the glass slag in a planet ball mill, adding grinding balls according to a material-ball ratio of 1: 0.8-1, and ball-milling for 100-120 min; sieving the ground glass powder, and taking the glass powder below a 150-mesh sieve for later use;
dispersing the glass powder sieved by a 150-mesh sieve in a liquid phase consisting of a solvent, a dispersing agent and a binder, adding grinding balls, and performing ball milling for 100-120 min to obtain glass powder slurry; the mass ratio of the glass powder to the solvent to the dispersant to the binder to the grinding balls is 110: 70-76: 0.8-1.2: 11-14: 165-180;
step (5), placing the glass powder slurry in a spray granulation tower for spray granulation, sieving the obtained granulated powder, and taking the granulated powder of 80-200 meshes for later use;
preparing the granulated powder into a required glass blank by compression molding, carrying out binder removal on the glass blank at the temperature of 360-600 ℃, and vitrifying the glass blank at the temperature of 650-700 ℃ to obtain required glass beads;
and (7) assembling the metal shell, the glass beads, the metal conductor and the sintering mold together, putting the metal shell, the glass beads, the metal conductor and the sintering mold into an atmosphere sintering furnace, introducing nitrogen, and preserving heat at 960-980 ℃ for 15-20 min for sealing.
6. The method for preparing a glass-to-metal sealed coaxial conductor assembly for a pressurized water reactor electrical penetration assembly according to claim 5, wherein the method comprises the following steps: in the step (4), the solvent is deionized water, the dispersant is sodium polyacrylate, the binder is polyethylene glycol, and the grinding ball is a zirconia ball with the diameter of 5 mm.
7. The method for preparing a glass-to-metal sealed coaxial conductor assembly for a pressurized water reactor electrical penetration assembly according to claim 5, wherein the method comprises the following steps: in the step (7), the sintering mold is made of graphite material.
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| CN114823928A (en) * | 2022-04-26 | 2022-07-29 | 中国电子科技集团公司第四十三研究所 | Photoelectric packaging shell and manufacturing process thereof |
| CN115043590A (en) * | 2022-06-17 | 2022-09-13 | 贵州航天电器股份有限公司 | Application of glass powder in packaging electronic components or motors |
| CN115259670A (en) * | 2022-07-26 | 2022-11-01 | 冷水江市汇鑫电子陶瓷有限公司 | Glass-based solder and preparation method thereof |
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| CN114823928A (en) * | 2022-04-26 | 2022-07-29 | 中国电子科技集团公司第四十三研究所 | Photoelectric packaging shell and manufacturing process thereof |
| CN114823928B (en) * | 2022-04-26 | 2024-02-20 | 中国电子科技集团公司第四十三研究所 | Photoelectric packaging shell and manufacturing process thereof |
| CN115043590A (en) * | 2022-06-17 | 2022-09-13 | 贵州航天电器股份有限公司 | Application of glass powder in packaging electronic components or motors |
| CN115043590B (en) * | 2022-06-17 | 2023-12-05 | 贵州航天电器股份有限公司 | Application of glass powder in packaging electronic components or motors |
| CN115259670A (en) * | 2022-07-26 | 2022-11-01 | 冷水江市汇鑫电子陶瓷有限公司 | Glass-based solder and preparation method thereof |
| CN115259670B (en) * | 2022-07-26 | 2023-11-28 | 冷水江市汇鑫电子陶瓷有限公司 | Glass-based solder and preparation method thereof |
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