CN112573831A - Glass bead for fixing filament of incandescent lamp and preparation process thereof - Google Patents
Glass bead for fixing filament of incandescent lamp and preparation process thereof Download PDFInfo
- Publication number
- CN112573831A CN112573831A CN202011444456.9A CN202011444456A CN112573831A CN 112573831 A CN112573831 A CN 112573831A CN 202011444456 A CN202011444456 A CN 202011444456A CN 112573831 A CN112573831 A CN 112573831A
- Authority
- CN
- China
- Prior art keywords
- glass
- filament
- fixing
- incandescent lamp
- glue
- 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.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 107
- 239000011324 bead Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 18
- 239000012634 fragment Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000006060 molten glass Substances 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 8
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 8
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 8
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000005337 ground glass Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000009472 formulation Methods 0.000 abstract description 6
- 231100000331 toxic Toxicity 0.000 abstract description 4
- 230000002588 toxic effect Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910052916 barium silicate Inorganic materials 0.000 description 1
- HMOQPOVBDRFNIU-UHFFFAOYSA-N barium(2+);dioxido(oxo)silane Chemical compound [Ba+2].[O-][Si]([O-])=O HMOQPOVBDRFNIU-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
- 238000001238 wet grinding Methods 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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
- C03B19/063—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction by hot-pressing powders
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
- C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
- C03C3/115—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron
- C03C3/118—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron containing aluminium
Abstract
The invention discloses a glass bead for fixing an incandescent lamp filament and a preparation process thereof, belonging to the field of incandescent lamp materials, wherein the glass bead for fixing the incandescent lamp filament and the preparation process thereof comprise the following steps: step 1 obtaining a glass frit: weighing materials, mixing the materials by a ball mill, putting the materials into a crucible for melting, and pouring molten glass into deionized water; step 2, obtaining a glass preform: and (2) drying the glass fragments obtained in the step (1), crushing the glass fragments by a ball mill, using organic matters as a binder, preparing glass powder into slurry, granulating by a spray granulator, pressing into a glass tube blank by a mould, slowly heating by a glue discharging furnace, discharging glue, and sintering to form a glass preform. The invention discloses a glass bead for fixing filament of incandescent lamp and its preparation process, which adopts a new glass formulation without toxic components to obtain glass powder, and prepares glass granulated powder by adding glue, and then prepares the glass bead or glass tube suitable for fixing filament by pressing blank and removing glue.
Description
Technical Field
The invention relates to the field of incandescent lamp packaging materials, in particular to glass beads for fixing an incandescent lamp filament and a preparation process thereof.
Background
The automobile lamp (such as a high beam) is of the incandescent lamp (figure 1) type, the LED lamp type and the like. The incandescent lamp has high power and high temperature, and its main components are filament (generally tungsten filament) and electrode leads (made of Dumet wire) at two ends of the tungsten filament. Dumet wire is made up of iron-nickel alloy wire (nickel content 43.0 +/-0.5%) as core wire, electrolytic copper as coating and borate (Na)2B4O7) Is coated. The coefficient of thermal expansion of Dumet wire is (8-10) x10-6V. C. In order to secure the two dumet wire leads and prevent the short circuit problem caused by softening, bending or twisting of the two dumet wire leads, it is necessary to secure the two dumet wires with high temperature resistant glass, as shown in fig. 2. The requirement for the filament fixing glass is that its thermal expansion coefficient matches that of Dumet wire, e.g. the deviation is 0.5x10-6The glass transition temperature is higher than 595 ℃ and 615 ℃ and the glass softening point is higher than 650 ℃ within/° C, and most importantly, the high-temperature resistivity of the glass is high, for example, the insulation resistivity of the glass is not less than 10 under the condition of the temperature of more than 470 DEG C8Ohm.
The existing filament glass is barium silicate-based glass imported from Germany, the real formula of the glass is not disclosed, but toxic V can be confirmed to be contained in the glass2O5Component, great harm, high cost of imported glass and long supply time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing a glass bead for fixing an incandescent lamp filament and a preparation process thereof, researching and developing a novel glass formula of non-toxic components, obtaining glass powder, preparing the glass powder into glass granulation powder by adding glue, and then preparing the glass bead or glass tube suitable for fixing and packaging the filament by a compacting and glue discharging process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a glass bead for fixing filament of an incandescent lamp, which comprises the following glass components in percentage by mass: (46-54)% SiO2、(20-25)％BaO、(0.2-4.0)％SrO、(1.5-4.0)％MgO、 (1.0-4.0)％CaO、(0-4.0)％Bi2O3、(2.0-7.0)％B2O3、(1.0-3.0)％Na2O、 (2.0-6.0)％K 20、(1.5-4.5)％Al2O3、(0.5-1.0)％Cr2O3、(0.2-1.5)％MnO2、 (0.2-1.0)％Co2O3、(0.17-0.80)％Fe2O3、(0-1.0)％CaF2And (0-1.0)% CeO2。
The invention provides a preparation process of glass beads for fixing filament of incandescent lamp, which comprises the following steps:
step 1-obtaining glass fragments: weighing required materials, mixing the materials through a ball mill, putting the mixture after ball milling and uniform mixing into a ceramic crucible, melting and preserving heat of the mixture, and pouring molten glass liquid into deionized water to obtain glass fragments;
step 2-obtaining a glass preform: and (2) drying the glass fragments obtained in the step (1), crushing the glass fragments by a ball mill, preparing glass powder into slurry by using an organic binder such as polyvinyl alcohol (PVA), granulating by using a spray granulator, pressing the glass powder into a glass tube blank by using a mould, slowly heating and removing the glue by using a glue removing furnace, and finally sintering to form a glass preform.
Preferably, the glass melting temperature in the step 1 is 1450-1500 ℃, and the heat preservation time is 80-120 min.
Preferably, in step 2, the median diameter particle size D50 of the ground glass pieces after ball milling is between 15 μm and 35 μm.
Preferably, the mass fraction of the binder polyvinyl alcohol (PVA) used in step 2 is between (2-4)%.
Preferably, in step 2, the spray granulator is used for granulating and then pressing the granules into a glass tube blank through a die, and the required pressure is between 20MPa and 100 MPa.
Preferably, in the step 2, the sintering temperature required by the glass tube blank sintered after the temperature is slowly raised and the glue is discharged through the glue discharging furnace is between 680 and 720 ℃.
Preferably, in step 2, the temperature needs to be slowly raised to the required sintering temperature, and the heating process is as follows:
room temperature (warming up with 120 min) → 250 ℃ (holding 30min) → 250 ℃ (warming up with 150 min) → 400 ℃ (holding 30min) → 400 ℃ (warming up with 30min) → 450 ℃ (holding 30min) → 450 ℃ (warming up with 90 min) → 700 ℃ (holding 10min) → 700 ℃ (power off) → furnace cooling.
The invention has the beneficial effects that:
the prepared glass tube meets the basic performance requirements of the incandescent lamp on fixing glass and the operability requirements of the filament fixing and sealing process, obtains the satisfactory effects of filament electric insulation fixing and lamp tube airtight packaging, can replace foreign similar products, and overcomes the defect of toxic components in foreign similar glass.
Drawings
FIG. 1 is a schematic view of a filament and fusion sealed glass beads;
FIG. 2 is a physical diagram of a glass bead or glass tube for filament mounting and encapsulation;
FIG. 3 is a schematic diagram showing the shape and size of a glass bead or glass tube for filament fixing and sealing;
FIG. 4 is a thermal expansion curve of a filament fixing glass bead of an incandescent lamp according to an embodiment of the present invention;
table 1 shows the dimensional data of the glass beads or glass tubes for filament fixing and sealing;
table 2 shows the batch calculations for the glass formulations of example 1;
table 3 is a comparison table of different formulations used to make different glasses;
table 4 shows a comparison of the properties of the glasses obtained with the different formulations.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Table 1: dimensional data of glass beads or glass tubes for filament mounting and encapsulation
| (Code) | Description of the invention | Data of |
| A | Outer diameter OD | 7.05-7.95mm |
| B | Outer diameter ID | 5.25-5.75mm |
| C | Length of | 1.7+/-0.15mm |
| W | Weight (D) | 100+/-mg/pcs |
Table 2: batch calculation for glass formulation of example 1
As shown in fig. 1 to 4 and tables 1 to 4, the content (mass fraction) and composition (component) of a glass bead for fixing a filament of an incandescent lamp provided in this series of examples were: (46-54)% SiO2、(20-25)％BaO、(0.2-4.0)％SrO、(1.5-4.0)％MgO、(1.0-4.0)％ CaO、(0-0.5)％V2O5、(0-4.0)％Bi2O3、(2.0-7.0)％B2O3、(1.0-3.0)％ Na2O、(2.0-6.0)％K 20、(1.5-4.5)％Al2O3、(0.5-1.0)％Cr2O3、 (0.2-1.5)％MnO2、(0.2-1.0)％Co2O3、(0.17-0.80)％Fe2O3、 (0-1.0)％CaF2And (0-1.0)% CeO2。
The preparation process of the glass bead for fixing the filament of the incandescent lamp provided by the series of embodiments is based on the glass bead for fixing the filament of the incandescent lamp, and further comprises the following steps of:
step 1-obtaining glass fragments: weighing required materials, mixing the materials by a ball mill in a dry method or a wet method, putting the mixture after ball milling and mixing into a ceramic crucible, melting and preserving heat of the mixture, and pouring molten glass into deionized water to obtain glass fragments;
step 2-obtaining a glass preform: and (2) drying the glass fragments obtained in the step (1), crushing (dry grinding or wet grinding) the dried glass fragments by using a ball mill, preparing glass powder into water-based (or organic-based) slurry by using polyvinyl alcohol (PVA) as a water-soluble binder or polyvinyl butyral (PVB) as an organic solvent-based binder, granulating by using a spray granulator, pressing the slurry into a glass tube blank by using a die, slowly heating and discharging glue by using a glue discharging furnace, and finally sintering to form a glass preform.
Further, the glass melting temperature in the step 1 is 1450-1500 ℃, and the heat preservation time is 80-120 min.
Further, in step 2, the median diameter particle size D50 of the glass cullet after being pulverized by the ball mill is between 15 μm and 35 μm.
Further, the binder polyvinyl alcohol (PVA) or polyvinyl butyral (PVB) used in step 2 is present in a mass fraction of between (2-4)%.
Further, in step 2, the spray granulator is used for granulating and then is pressed into a glass tube blank through a die, and the required pressure is 20MPa-100 MPa.
Further, in the step 2, the sintering temperature required by the glass tube blank sintered after the temperature is slowly raised and the glue is discharged through the glue discharging furnace is between 680 and 720 ℃.
Further, in step 2, the temperature needs to be slowly raised to the required sintering temperature, and the heating process is as follows:
room temperature (warming up with 120 min) → 250 ℃ (holding 30min) → 250 ℃ (warming up with 150 min) → 400 ℃ (holding 30min) → 400 ℃ (warming up with 30min) → 450 ℃ (holding 30min) → 450 ℃ (warming up with 90 min) → 700 ℃ (holding 10min) → 700 ℃ (power off) → furnace cooling.
Table 3: comparison table for different formulas for making different glasses
| Component (c) is | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| SiO2 | 46 | 49.00 | 48.50 | 52.00 | 55.00 | 50.20 | 41 |
| BaO | 22.2 | 20 | 21.92 | 25 | 21.7 | 18.5 | 16.56 |
| SrO | 1.5 | 4 | 2.00 | 0.2 | 2 | 0.2 | |
| MgO | 1.5 | 2.50 | 2.50 | 4.00 | 2.50 | 2.90 | 11.14 |
| CaO | 3.2 | 4 | 3.70 | 1 | 0.7 | 4.8 | 13 |
| V2O5 | 5 | 0 | 4.00 | 3.67 | 0.00 | 6.40 | |
| Bi2 |
1 | 4.00 | 0.00 | 0.5 | |||
| B2O3 | 6 | 5.5 | 7.00 | 2 | 7.5 | 1.7 | 2 |
| Na2O | 1.5 | 0.90 | 3.00 | 1.00 | 1.50 | 1.00 | 0.5 |
| K2O | 2.3 | 2.7 | 2.00 | 6 | 1.7 | 5.2 | 2.5 |
| Al2O3 | 4.5 | 3.00 | 1.50 | 3.50 | 3.00 | 5.70 | 1.95 |
| Cr2O3 | 1 | 0.50 | 0.50 | 0.57 | 0.50 | 0.50 | 1.5 |
| MnO2 | 1.5 | 1.40 | 1.40 | 0.20 | 1.40 | 1.40 | 1.5 |
| Co2O3 | 1 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.4 |
| Fe2O3 | 0.8 | 0.80 | 0.28 | 0.17 | 0.80 | 0.80 | 0.4 |
| CaF2 | 0.5 | 1.00 | 1.00 | 0 | 1.00 | 0.50 | 0.5 |
| CeO2 | 0.5 | 0.50 | 0.50 | 0 | 0.50 | 0.5 | |
| ZnO | 5.55 | ||||||
| ZrO2 | 1 |
Table 4: comparison of glass Properties obtained with different formulations
As is evident from the data obtained by the comparative tests in tables 3 and 4, the glass tube obtained in accordance with this example has a thermal expansion coefficient and a glass transition point TgGlass softening point TfThe value of the fluorescent lamp is in the required range, meets the requirements on the basic performance and the operability of the sealing process, obtains the satisfactory effects of fixing the filament and packaging the lamp tube, can replace foreign similar products, overcomes the defect of toxic components in foreign glass, and is harmless to human bodies and the environment.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (8)
1. A glass bead for fixing filament of incandescent lamp is characterized in that:
the glass comprises the following components in percentage by mass: (46-54)% SiO2、(20-25)％BaO、(0.2-4.0)％SrO、(1.5-4.0)％MgO、(1.0-4.0)％CaO、(0-4.0)％Bi2O3、(2.0-7.0)％B2O3、(1.0-3.0)％Na2O、(2.0-6.0)％K20、(1.5-4.5)％Al2O3、(0.5-1.0)％Cr2O3、(0.2-1.5)％MnO2、(0.2-1.0)％Co2O3、(0.17-0.80)％Fe2O3、(0-1.0)％CaF2And (0-1.0)% CeO2。
2. A process for producing a glass bead for fixing an incandescent lamp filament, comprising the glass bead for fixing an incandescent lamp filament according to claim 1, characterized by further comprising the steps of:
step 1-obtaining glass fragments: weighing required materials, mixing the materials through a ball mill, putting the mixture after ball milling and uniform mixing into a ceramic crucible, melting and preserving heat of the mixture, and pouring molten glass liquid into deionized water to obtain glass fragments;
step 2-obtaining a glass preform: and (2) drying the glass fragments obtained in the step (1), crushing the glass fragments by using a ball mill, using organic matters such as polyvinyl alcohol (PVA) as a binder, preparing glass powder into slurry (such as water-based slurry), granulating by using a spray granulator, pressing into a glass tube blank by using a mould, slowly heating and discharging glue by using a glue discharging furnace, and finally sintering to form a glass preform.
3. The process according to claim 2, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
the glass melting temperature in the step 1 is 1450-1500 ℃, and the heat preservation is usually 80-120 min.
4. The process according to claim 2, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
in step 2, the median particle size D50 of the ground glass pieces was between 15 μm and 35 μm after ball milling.
5. The process according to claim 2, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
the mass fraction of the binder used in step 2 is between (2-4)% and the binder may preferably be polyvinyl alcohol (PVA).
6. The process according to claim 2, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
in the step 2, the spray granulator is used for granulating and then is pressed into a glass tube blank by a mould, and the required pressure is between 20MPa and 100 MPa.
7. The process according to claim 2, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
in the step 2, the sintering temperature required by the glass tube blank sintered after the temperature is slowly raised and the glue is discharged through the glue discharging furnace is between 680 and 720 ℃.
8. The process according to claim 7, wherein the glass beads for fixing the filament of the incandescent lamp are prepared by:
in step 2, the temperature needs to be slowly raised to the required sintering temperature, and the heating process is as follows:
room temperature (warming up with 120 min) → 250 ℃ (holding 30min) → 250 ℃ (warming up with 150 min) → 400 ℃ (holding 30min) → 400 ℃ (warming up with 30min) → 450 ℃ (holding 30min) → 450 ℃ (warming up with 90 min) → 700 ℃ (holding 10min) → 700 ℃ (power off) → furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444456.9A CN112573831A (en) | 2020-12-08 | 2020-12-08 | Glass bead for fixing filament of incandescent lamp and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444456.9A CN112573831A (en) | 2020-12-08 | 2020-12-08 | Glass bead for fixing filament of incandescent lamp and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112573831A true CN112573831A (en) | 2021-03-30 |
Family
ID=75130873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011444456.9A Pending CN112573831A (en) | 2020-12-08 | 2020-12-08 | Glass bead for fixing filament of incandescent lamp and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112573831A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113788605A (en) * | 2021-08-30 | 2021-12-14 | 四川航天川南火工技术有限公司 | Pressing and forming method for long glass tube for initiating explosive device sealing body |
| CN114014527A (en) * | 2021-11-01 | 2022-02-08 | 西安赛尔电子材料科技有限公司 | Aluminum-sealed phosphate glass powder spray granulation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986492A (en) * | 2006-12-15 | 2007-06-27 | 武汉理工大学 | Preparing process of great size energy-storing dielectric ceramic |
| CN101565276A (en) * | 2009-06-01 | 2009-10-28 | 贵阳晶华电子材料有限公司 | Glass powder for PDP barrier |
| CN102030477A (en) * | 2009-10-07 | 2011-04-27 | 旭硝子株式会社 | Ceramic material composition |
| CN102276151A (en) * | 2011-05-16 | 2011-12-14 | 周涛 | Technological method for preparing LTCC (low temperature co-fired ceramic) amorphous glass ceramic powder with microwave plasma torch |
| JP2017071532A (en) * | 2015-10-08 | 2017-04-13 | 日本電気硝子株式会社 | Glass powder for three-dimensional molding |
-
2020
- 2020-12-08 CN CN202011444456.9A patent/CN112573831A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986492A (en) * | 2006-12-15 | 2007-06-27 | 武汉理工大学 | Preparing process of great size energy-storing dielectric ceramic |
| CN101565276A (en) * | 2009-06-01 | 2009-10-28 | 贵阳晶华电子材料有限公司 | Glass powder for PDP barrier |
| CN102030477A (en) * | 2009-10-07 | 2011-04-27 | 旭硝子株式会社 | Ceramic material composition |
| CN102276151A (en) * | 2011-05-16 | 2011-12-14 | 周涛 | Technological method for preparing LTCC (low temperature co-fired ceramic) amorphous glass ceramic powder with microwave plasma torch |
| JP2017071532A (en) * | 2015-10-08 | 2017-04-13 | 日本電気硝子株式会社 | Glass powder for three-dimensional molding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113788605A (en) * | 2021-08-30 | 2021-12-14 | 四川航天川南火工技术有限公司 | Pressing and forming method for long glass tube for initiating explosive device sealing body |
| CN114014527A (en) * | 2021-11-01 | 2022-02-08 | 西安赛尔电子材料科技有限公司 | Aluminum-sealed phosphate glass powder spray granulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112573831A (en) | Glass bead for fixing filament of incandescent lamp and preparation process thereof | |
| CN103096529B (en) | There is the manufacture method of the silicon nitride heat generating body of higher reliability and fail safe | |
| CN106587641A (en) | Low-melting-point glass powder and laser-illumination glass ceramic made from low-melting-point glass powder | |
| CN106430989B (en) | A kind of low melting point glass powder, preparation method and application and the method for preparing compound glass column using low melting point glass powder | |
| CN100345786C (en) | Low melting point, low expanding coefficient solder glass seal powder and its preparing method | |
| CN105731802A (en) | Sealing glass for sealing optical fibers and sealing method thereof | |
| CN103626398A (en) | Devitrification type lead-free low-temperature sealing glass as well as preparation method and application method thereof | |
| CN108395102B (en) | LTCC substrate material with low thermal expansion coefficient and preparation method thereof | |
| CN101265024A (en) | Low-melting point leadless borophosphate seal glass powder and preparation method thereof | |
| CN112225462B (en) | Low-expansion-coefficient low-dielectric-constant microcrystalline glass powder for electronic paste and preparation method thereof | |
| CN106882923A (en) | A kind of devitrified glass of resistance to 650 DEG C of high temperature and preparation method thereof | |
| JP2011084437A (en) | Sealing material | |
| JP2008123821A (en) | Fluorescent lamp and lighting system | |
| CN102503149A (en) | Low-lead glass powder for silver paste of anode of solar cell and preparation method of low-lead glass powder | |
| CN106882922A (en) | A kind of seal glass of resistance to 550 DEG C of high temperature and preparation method thereof | |
| WO2017188015A1 (en) | Glass tube for metal sealing and glass for metal sealing | |
| CN103096528A (en) | Preparation method for silicon nitride heating body | |
| CN102432184A (en) | Low melting point phosphate glass powder for silver paste of solar battery and preparation method thereof | |
| JP2020031057A (en) | Body, in particular lamp body, and manufacturing method of hermetic seal | |
| JP2000007373A (en) | Glass for exhaust tube and exhaust tube | |
| JP2009062263A (en) | Sealing material, and a method of manufacturing the same | |
| CN111470778B (en) | Calcium barium silicon aluminum glass-based low-dielectric low-temperature co-fired ceramic material and preparation method thereof | |
| WO2023044837A1 (en) | Lead-free borosilicate glass material, and preparation method therefor and use thereof | |
| CN102153281B (en) | Piezoelectric ceramic glass and preparation method and application of piezoelectric ceramic glass | |
| CN108779034B (en) | Ceramic powder and method for producing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 341800 10 factory buildings in zone 2, Jinlong Avenue Industrial Park, QUANNAN County, Ganzhou City, Jiangxi Province Applicant after: Ganzhou Zhongao new porcelain Technology Co.,Ltd. Address before: 341800 10 factory buildings in zone 2, Jinlong Avenue Industrial Park, QUANNAN County, Ganzhou City, Jiangxi Province Applicant before: Ganzhou China Ceramics Technology Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |
|
| RJ01 | Rejection of invention patent application after publication |