DE2116155B2 - Lead oxide and barium oxide-free, heat-absorbing fusing glasses with only a slight evaporation rate during the fusing carried out with the help of radiant heaters with thermal expansion coefficients of 90.9 to 93.5.10-7 / degrees C (20-300 degrees C), softening temperatures of 648 to 672 degrees C and Processing temperatures from 945 to 999 degrees C. - Google Patents
Lead oxide and barium oxide-free, heat-absorbing fusing glasses with only a slight evaporation rate during the fusing carried out with the help of radiant heaters with thermal expansion coefficients of 90.9 to 93.5.10-7 / degrees C (20-300 degrees C), softening temperatures of 648 to 672 degrees C and Processing temperatures from 945 to 999 degrees C.Info
- Publication number
- DE2116155B2 DE2116155B2 DE19712116155 DE2116155A DE2116155B2 DE 2116155 B2 DE2116155 B2 DE 2116155B2 DE 19712116155 DE19712116155 DE 19712116155 DE 2116155 A DE2116155 A DE 2116155A DE 2116155 B2 DE2116155 B2 DE 2116155B2
- Authority
- DE
- Germany
- Prior art keywords
- degrees
- fusing
- glasses
- temperatures
- heat
- 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.)
- Withdrawn
Links
- 239000011521 glass Substances 0.000 title claims description 28
- 229910000464 lead oxide Inorganic materials 0.000 title claims description 5
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 title claims description 5
- 229910052788 barium Inorganic materials 0.000 title claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 title claims description 3
- 230000008020 evaporation Effects 0.000 title claims 2
- 238000001704 evaporation Methods 0.000 title claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 230000004927 fusion Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- URQWOSCGQKPJCM-UHFFFAOYSA-N [Mn].[Fe].[Ni] Chemical compound [Mn].[Fe].[Ni] URQWOSCGQKPJCM-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- 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
-
- 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
-
- 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
-
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/082—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for infrared absorbing glass
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
sowie Fluoride, berechnet als Fluorand fluoride calculated as fluorine
F2 O bis 0,4F 2 O to 0.4
2. Verschmelzglas nach Anspruch 1, dadurch gekennzeichnet, daß es im Ansatz, berechnet als Oxide, enthält:2. Fusing glass according to claim 1, characterized in that it is calculated as an approach Oxides, contains:
- ...--.. . Gewichtsprozent- ...-- ... Weight percent
SiO21 69,65SiO 21 69.65
. B2O3'.. 2,50. B 2 O 3 '.. 2.50
Al2O3 :.... 2,70Al 2 O 3 : .... 2.70
Li2O -....ν. ;.-.· 1,00Li 2 O -.... ν. ; .-. · 1.00
Na2O ......ν......... 13,00 i Na 2 O ...... ν ......... 13.00 i
K2O.. 2,00K 2 O .. 2.00
MgO .2,10 ..MgO .2,10 ..
CaO 3,25CaO 3.25
Fe2O3 3,80Fe 2 O 3 3.80
NH4Cl 0,30NH 4 Cl 0.30
45 den. Die Nachteile diener Gläser bestehen darin, daß sie Bestandteile enthalten, die beim Verschmelzprozeß in neutraler oder !oxydierender Atmosphäre aus dem Glas verdampfen und sich an anderen Stellen, z. B. auf den metallischen Kontakten, als deutlich wahrnehmbare Kondensate niederschlagen. Die einwandfreie Funktion eines solchen Kontaktes wird dadurch verhindert. Dieses Verhalten zeigen die bleioxidhaltigen Gläser nach der französischen Patentschrift 1451 798 und die fluorhaltigen Gläser nach der Patentanmeldung P 14 51 798 mit einem Fluorgehalt >,.0,4 Gewichtsprozent.45 den. The disadvantages of serving glasses are that they contain components that are removed from the Evaporate glass and settle in other places, e.g. B. on the metallic contacts, as clearly perceptible Precipitate condensates. The perfect function of such a contact is thereby prevented. The lead oxide-containing glasses according to the French patent show this behavior 1451 798 and the fluorine-containing glasses according to patent application P 14 51 798 with a fluorine content >,. 0.4 percent by weight.
Erfolgt der ."Verschmelzprozeß in reduzierender Atmosphäre, so sind bleioxidhaltige Gläser ebenfalls ungeeignet. Das Bleioxid wird hierbei zu metallischem Blei reduziert, was zu einer Schwarzfärbung des Glases führt.If the. "Merging process takes place in a reducing Atmosphere, glasses containing lead oxide are also unsuitable. The lead oxide becomes metallic Lead reduced, which leads to a black discoloration of the glass.
Neueste Untersuchungen haben ferner ergeben, daß auch bariumoxidhaltige Gläser, z. B. nach der deutschen Offenlegungsschrift 1 942918, für die Fertigung derartiger Kontakte (Reedkontakte) in reduzierender Atmosphäre Mängel aufweisen. So wurde gefunden, daß bei Verwendung bariumoxidhaltiger Gläser die Kontakte, insbesondere "von Schaltern mit GoId-Silber-Kontaktflächen, zum Kaltverschweißen neigen. Man nimmt an, daß beim Verschmelzprozeß entstehende Spuren von metallischem Barium als Getterstoff diese Störung verursachen.The latest studies have also shown that glasses containing barium oxide, e.g. B. after the German Offenlegungsschrift 1 942918, for the production of such contacts (reed contacts) in reducing Atmosphere have flaws. It was found that when using glasses containing barium oxide Contacts, in particular "of switches with gold-silver contact surfaces, tend towards cold welding. It is believed that resulting from the merging process Traces of metallic barium as a getter material cause this disorder.
Ziel der vorliegenden Erfindung sind Glaszusammensetzungen, welche die geschilderten Nachteile der bekannten wärmeabsorbierenden Gläser nicht aufweisen und die eine" funktionsgerechte Fertigung der als Reedkontakte-bekanntgewordenen Schaltelemente ermöglichen.The aim of the present invention is to provide glass compositions which have the disadvantages outlined of the known heat-absorbing glasses do not have and a "functional production the switching elements that have become known as reed contacts.
Dieses Ziel wird erfinduhgsgemäß erreicht mit Gläsern, die im Ansatz, berechnet als Oxide, enthalten:This goal is achieved according to the invention with glasses that contain in the approach, calculated as oxides:
GewichtsprozentWeight percent
.- SiO2 63,7 bis 72,15- SiO 2 63.7 to 72.15
B2O3 0 bis 3B 2 O 3 0 to 3
Al2O3 2 bis 7Al 2 O 3 2 to 7
Li2O 0,8 bis 1Li 2 O 0.8 to 1
Na2O : 10,7 bis 13,7Na 2 O: 10.7 to 13.7
In den letzten Jahren haben wärmeabsorbierende Verschmelzgläser an Bedeutung gewonnen. Derartige Gläser finden bevorzugt in Rohrform Verwendung zur isolierenden gasdichten Umhüllung elektronischer Bauteile, wie z. B. von·Schaltkontakten aus Nickel-Mangan-Eisen oder Nickel-Chrom-Eisen-Legierungen. Die Verschmelzung des metallischen Durchführungsteiles mit dem wärmeabsorbierenden Ummantelungsglas erfolgt unmittelbar durch Heizstrahler, deren Infrarotstrahlung im Wellenlängenbereich von 1 bis 3 μ.ΐη von dem Glas weitgehend absorbiert wird. Der Verschmelzvorgang wird je nach der Art der Durchführungsmetalle entweder in einer bestimmten Gasatmosphäre oder im Vakuum ausgeführt. In der Patentanmeldung P 17 96 232.2-45, in der französischen Patentschrift 1 451 798 und in der deutschen Offenlegungsschrift 1 942 918 sind derartige wärmeabsorbierende Verschmelzgläser beschrieben.In recent years, heat-absorbing fusing glasses have gained in importance. Such Glasses are preferably used in tubular form for insulating gas-tight enclosures for electronic devices Components such as B. of · switching contacts made of nickel-manganese-iron or nickel-chromium-iron alloys. The fusion of the metallic bushing part with the heat-absorbing cladding glass takes place directly through radiant heaters, whose Infrared radiation in the wavelength range from 1 to 3 μ.ΐη is largely absorbed by the glass. Of the Depending on the type of bushing metal, the melting process takes place either in a specific gas atmosphere or carried out in a vacuum. In the patent application P 17 96 232.2-45, in the French Patent specification 1,451,798 and in German Offenlegungsschrift 1,942,918 are such heat-absorbing Fusion glasses described.
Es zeigt sich nun in der Praxis, daß diese Gläser den Anforderungen nur unvollkommen gerecht wer-It has now been shown in practice that these glasses only partially meet the requirements
2 bis 52 to 5
MgO 1,6 bis 2,8MgO 1.6 to 2.8
CaO 3,25 bis 4CaO 3.25 to 4
Fe3O4 3 bis 4,5Fe 3 O 4 3 to 4.5
sowie Fluoride, berechnet als Fluorand fluoride calculated as fluorine
F2 0 bis 0,4F 2 0 to 0.4
und gegebenenfallsand if necessary
Zucker 0 bis 0,3Sugar 0 to 0.3
NH4Cl 0 bis 0,5NH 4 Cl 0 to 0.5
NaCl 0 bis 0,5NaCl 0 to 0.5
Der Zusatz an Zucker dient zur Verstärkung der Wärmeabsorption der Gläser zwischen 1 und 3 μΐη, d. h. zur Verschiebung des Eisen-II/III-Gleichgewichtes nach der 2wertigen Seite.The addition of sugar serves to increase the heat absorption of the glasses between 1 and 3 μΐη, d. H. to shift the iron II / III equilibrium after the 2-valued side.
NH4Cl und NaCl dienen als Läutermittel.NH 4 Cl and NaCl serve as refining agents.
Die Wärmedehnungskqeffizienten der erfindungsgemäßen Gläser sind zur Erzielung einer spannungsarmen und damit mechanisch haltbaren Verschmelzung denen der eingangs erwähnten Verschmelzlegierungen angepaßt. Im Temperaturbereich von 20 bis 300° C haben diese Gläser Wärmedehnungskoeffizienten von etwa 90 bis 94 x 10~7/°CThe coefficients of thermal expansion of the glasses according to the invention are adapted to those of the fusion alloys mentioned at the outset in order to achieve a low-tension and thus mechanically durable fusion. In the temperature range from 20 to 300 ° C, these glasses have thermal expansion coefficients of around 90 to 94 x 10 ~ 7 / ° C
Durch Einführung von 3,0 bis 4,5 Gewichtsprozent Fe3O4 oder auch von 3,0 bis 3,7 Gewichtsprozent Fe3O4 + 0,4 bis 0,8 Gewichtsprozent CoO haben die Gläser das Maximum der Wärmeabsorption zwischen 1 und 3 μπα.By introducing 3.0 to 4.5 percent by weight Fe 3 O 4 or from 3.0 to 3.7 percent by weight Fe 3 O 4 + 0.4 to 0.8 percent by weight CoO, the glasses have the maximum heat absorption between 1 and 2 3 μπα.
Weiterhin sind die erfindungsgemäßen Gläser trotz Beseitigung der geschilderten Mängel noch weich genug, um bei relativ niedrigen Temperaturen eine einwandfreie und praktisch kondensatfreie Verschmelzung mit den Einschmelzlegierungen zu ermögliehen. Sie haben Erweichungstemperaturen (Ew; η = ίο7·6 Poise) von 648 bis 672° C und Verarbeitungstemperaturen (VA; η = 104 Poise) zwischen 945 und 999° C.Furthermore, despite the elimination of the defects described, the glasses according to the invention are still soft enough to enable perfect and practically condensate-free fusion with the melt-in alloys at relatively low temperatures. They have softening temperatures (E w ; η = ίο 7 6 poise) from 648 to 672 ° C and processing temperatures (V A ; η = 10 4 poise) between 945 and 999 ° C.
Wie bereits erwähnt, können zur Verbreiterung des Maximums der Wärmeabsorption 0,4 bis 0,8 Gewichtsprozent Fe3O4 durch CoO ersetzt werden.As already mentioned, 0.4 to 0.8 percent by weight Fe 3 O 4 can be replaced by CoO in order to broaden the maximum of the heat absorption.
Zur Charakterisierung des erfindungsgemäßen Zusammensetzungsbereiches enthält die folgende Tabelle fünf Ausführungsbeispiele von Glaszusammensetzungen in Gewichtsprozent mit den hier interessierenden Eigenschaftswerten:To characterize the composition range according to the invention the following table contains five exemplary embodiments of glass compositions in percent by weight with the property values of interest here:
BestandteileComponents
Nr. 1number 1
Nr. Nr. 3No. No. 3
Nr. 4No. 4
Nr. 5No. 5
SiO2 .
B2O3.
Al2O3
Li2O .
Na2O
K2O .
MgO.
CaO .
Fe3O4
F ....SiO 2 .
B 2 O 3 .
Al 2 O 3
Li 2 O.
Na 2 O
K 2 O.
MgO.
CaO.
Fe 3 O 4
F ....
63,70 3,00 7,00 0,8063.70 3.00 7.00 0.80
10,70 5,00 1,60 3,70 4,50 0,4010.70 5.00 1.60 3.70 4.50 0.40
67,70 3,00 3,00 0,8067.70 3.00 3.00 0.80
13,70 2,00 2,30 3,70 3,80 0,40 66,20
2,50
5,00
0,8013.70 2.00 2.30 3.70 3.80 0.40 66.20
2.50
5.00
0.80
12,70
3,00
2,80
4,00
3,00
0,2012.70
3.00
2.80
4.00
3.00
0.20
69,65
2,50
2,70
1,0069.65
2.50
2.70
1.00
13,00
2,00
2,10
3,25
3,8013.00
2.00
2.10
3.25
3.80
72,1572.15
2,00 0,80 13,20 2,50 2,30 3,25 3,802.00 0.80 13.20 2.50 2.30 3.25 3.80
Summe Gewichtsprozent...Total weight percent ...
100,40100.40
100,40 100,20100.40 100.20
100,00100.00
100,00100.00
α XlO7 (20 bis 3000C)/0 C.
Tg (0C) η ~1013·5 Poise ...
Ew (0C) η = 107·6 Poise ...
VA (0C) η = 10* Poise
Dichte (g/ccm) α XlO 7 (20 to 300 0 C) / 0 C.
Tg ( 0 C) η ~ 10 13 5 poise ...
E w ( 0 C) η = 10 7 6 poise ...
V A ( 0 C) η = 10 * poise
Density (g / ccm)
91,9 486 672 99391.9 486 672 993
2,522.52
93,5 484 648 945 2,53 92,5
488
663
95493.5 484 648 945 2.53 92.5
488
663
954
2,532.53
90,9
480
650
96090.9
480
650
960
2,512.51
92,5 473 663 999 2,4992.5 473 663 999 2.49
AusführungsbeispielEmbodiment
Zur Erschmelzung von 300 kg berechnetem Glas nach der Zusammensetzung von Beispiel 4 wird ein Glasgemenge verwendet, bestehend z. B. aus folgender Rohstoffmischung: 209,3 kg Quarzsand, 11,4 kg Rasorit, 12,3 kg Tonerdehydrat, 7,5 kg Lithiumkarbonat, 61,3 kg Soda, 8,9 kg Pottasche, 1,9 kg Kalk, 28,8 kg Dolomit, 11,4 kg Eisenoxid schwarz, 0,90 Ammoniumchlorid. To melt 300 kg calculated glass according to the composition of Example 4, a Glass batch used, consisting, for. B. from the following raw material mixture: 209.3 kg of quartz sand, 11.4 kg Rasorit, 12.3 kg alumina hydrate, 7.5 kg lithium carbonate, 61.3 kg soda, 8.9 kg potash, 1.9 kg lime, 28.8 kg dolomite, 11.4 kg black iron oxide, 0.90 ammonium chloride.
Das Gemenge wird in 14 Einlagen bei 14400C in einem 1201 fassenden basischen Glasschmelzhafen eingeschmolzen, 12 Stunden bei 14200C geläutert, in 10 Stunden auf die Arbeitstemperatur von 11800C abgekühlt und zu Röhren, z. B. von Hand, verarbeitet. Eine Kühlung dünnwandiger Röhren ist nicht nötig. Für dickwandige Artikel erfolgt eine Kühlung über 1 bis 2 Stunden bei 5000C und anschließender Abkühlung mit einer Geschwindigkeit von etwa 60 bis 80°C/Stunde bis 2000C. Danach kann die weitere Abkühlung beliebig schnell erfolgen.The batch is melted in 14 deposits at 1440 0 C in a 1201-making basic glass crucible, purified 12 hours at 1420 0 C, cooled in 10 hours to the working temperature of 1180 0 C and tubes, z. B. by hand, processed. Cooling of thin-walled tubes is not necessary. For thick-walled article, a cooling takes place over 1 to 2 hours at 500 0 C and subsequent cooling with a rate of about 60 to 80 ° C / hour to 200 0 C. After further cooling can take place at any desired speed.
Claims (1)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712116155 DE2116155B2 (en) | 1971-04-02 | 1971-04-02 | Lead oxide and barium oxide-free, heat-absorbing fusing glasses with only a slight evaporation rate during the fusing carried out with the help of radiant heaters with thermal expansion coefficients of 90.9 to 93.5.10-7 / degrees C (20-300 degrees C), softening temperatures of 648 to 672 degrees C and Processing temperatures from 945 to 999 degrees C. |
| NL7204122A NL7204122A (en) | 1971-04-02 | 1972-03-28 | |
| FR7211305A FR2132268B1 (en) | 1971-04-02 | 1972-03-30 | |
| GB1501972A GB1335005A (en) | 1971-04-02 | 1972-03-30 | Glass |
| BE787110A BE787110Q (en) | 1971-04-02 | 1972-08-02 | HEAT ABSORBING FUSION GLASSES FREE OF BARIUM LEAD OXIDES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712116155 DE2116155B2 (en) | 1971-04-02 | 1971-04-02 | Lead oxide and barium oxide-free, heat-absorbing fusing glasses with only a slight evaporation rate during the fusing carried out with the help of radiant heaters with thermal expansion coefficients of 90.9 to 93.5.10-7 / degrees C (20-300 degrees C), softening temperatures of 648 to 672 degrees C and Processing temperatures from 945 to 999 degrees C. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2116155A1 DE2116155A1 (en) | 1972-03-23 |
| DE2116155B2 true DE2116155B2 (en) | 1972-03-23 |
Family
ID=5803709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712116155 Withdrawn DE2116155B2 (en) | 1971-04-02 | 1971-04-02 | Lead oxide and barium oxide-free, heat-absorbing fusing glasses with only a slight evaporation rate during the fusing carried out with the help of radiant heaters with thermal expansion coefficients of 90.9 to 93.5.10-7 / degrees C (20-300 degrees C), softening temperatures of 648 to 672 degrees C and Processing temperatures from 945 to 999 degrees C. |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE787110Q (en) |
| DE (1) | DE2116155B2 (en) |
| FR (1) | FR2132268B1 (en) |
| GB (1) | GB1335005A (en) |
| NL (1) | NL7204122A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4015264C1 (en) * | 1990-05-12 | 1991-07-18 | Schott Glaswerke |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL252848A (en) * | 1959-07-01 | |||
| DE1796232B1 (en) * | 1968-09-25 | 1971-08-05 | Jenaer Glaswerk Schott & Gen | HEAT-ABSORBING AND ELECTRICALLY HIGH-ELECTRICALLY INSULATING ZGLAESER WITH THERMAL EXPANSION COEFFICIENTS BETWEEN 91.5 AND 94.9 X 10 UP TO 7 PER DEGREE C (20 TO 300 DEGREES C) TO BE MELTED WITH THE HELP OF HEATING RAYS |
-
1971
- 1971-04-02 DE DE19712116155 patent/DE2116155B2/en not_active Withdrawn
-
1972
- 1972-03-28 NL NL7204122A patent/NL7204122A/xx unknown
- 1972-03-30 FR FR7211305A patent/FR2132268B1/fr not_active Expired
- 1972-03-30 GB GB1501972A patent/GB1335005A/en not_active Expired
- 1972-08-02 BE BE787110A patent/BE787110Q/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4015264C1 (en) * | 1990-05-12 | 1991-07-18 | Schott Glaswerke |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7204122A (en) | 1972-10-04 |
| DE2116155A1 (en) | 1972-03-23 |
| GB1335005A (en) | 1973-10-24 |
| FR2132268A1 (en) | 1972-11-17 |
| FR2132268B1 (en) | 1975-08-29 |
| BE787110Q (en) | 1972-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |