DK164002B - ALLOY FOR USE BY MANUFACTURE OF A CENTRIFUGULE FOR USE BY FIBERATION OF MINERAL MATERIALS LIKE GLASS - Google Patents
ALLOY FOR USE BY MANUFACTURE OF A CENTRIFUGULE FOR USE BY FIBERATION OF MINERAL MATERIALS LIKE GLASS Download PDFInfo
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- DK164002B DK164002B DK290284A DK290284A DK164002B DK 164002 B DK164002 B DK 164002B DK 290284 A DK290284 A DK 290284A DK 290284 A DK290284 A DK 290284A DK 164002 B DK164002 B DK 164002B
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- glass
- alloy
- centrifugule
- fiberation
- manufacture
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- Manufacture, Treatment Of Glass Fibers (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
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DK 164002 BDK 164002 B
Opfindelsen angår en legering til brug ved fremstilling af et centrifugelegeme til brug ved fibrering af mineralske materialer såsom glas, og af den art, der omfatter en omkredsvæg udformet med rækker af huller, 5 igennem hvilke det ind i centrifugelegemet indførte, smeltede glasmateriale slynges ud under centrifugalkraftens påvirkning.The invention relates to an alloy for use in the manufacture of a centrifuge body for use in the fiberization of mineral materials such as glass, and of the kind comprising a circumferential wall formed with rows of holes through which the molten glass material introduced into the centrifuge body is thrown out. centrifugal force influence.
Opfindelsen har relation til fibrering af navnlig mineralske materialer såsom glas, ved hjælp af et 10 centrigugeapparat, der har vertikal akse, og hvori der indføres en strøm af smeltet glas, der, når centrifuge-apparatet roterer, rettes mod inderfladen på centrifugelegemets omkredsvæg, hvori der er tilvejebragt et stort antal huller, således at glasset slynges ud og 15 ved udgangen fra disse huller danner glasstråler. Appa-ratet omfatter midler til frembringelse af en kransformet strøm af gas ved udgangen fra et forbrændingskammer, hvilken strøm er rettet nedad langs ydersiden af centrifugelegemets perforerede omkredsvæg, således at 20 glasstrålerne trækkes, og fibrene medbringes nedad i gasstrømmen, hvorpå fibrene, der sædvanligvis påføres et overtræk af bindemiddel, afsættes på en perforeret modtagetransportør, der sædvanligvis er således indrettet, at den danner bunden af et modtagekammer. I en 25 særlig udformning er der under transportøren sugekamre, der bidrager til dannelse på transportøren af en fibermåtte, som derefter føres videre til yderligere behandling, emballage, osv.The invention relates to fibrating, in particular, mineral materials such as glass, by means of a vertical axis centrifuge apparatus, wherein a molten glass stream is introduced which, as the centrifuge apparatus rotates, is directed to the inner surface of the centrifuge body peripheral wall, wherein a large number of holes are provided so that the glass is thrown out and at the output of these holes glass jets form. The apparatus comprises means for generating a coronary flow of gas at the exit of a combustion chamber directed downwardly along the outside of the perforated circumferential wall of the centrifuge body so that the glass jets are drawn and the fibers are carried downward into the gas stream which is usually applied to the a coating of binder is deposited on a perforated receiving conveyor usually arranged to form the bottom of a receiving chamber. In a particular embodiment, there are suction chambers beneath the conveyor which contribute to formation on the conveyor of a fiber mat which is then passed on for further processing, packaging, etc.
I de sædvanlige anlæg af denne art anvender man 30 sædvanligvis blødt glas, dvs. glasarter af særlig beskaffenhed til opnåelse af sådanne temperatur- og viskositet s værdier, at glasset frit kan passere gennem hullerne i centrifugelegemet ved en temperatur, der ligger et godt stykke under den temperatur, som centrifugele-35 gemets materiale kan tåle uden alt for stor korrosion og deformation.In the usual plants of this kind, 30 are usually used soft glass, ie. Species of glass for obtaining such temperature and viscosity values that the glass can freely pass through the holes in the centrifuge body at a temperature well below the temperature that the material of the centrifuge body can withstand without excessive corrosion and deformation.
DK 164002 BDK 164002 B
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Med henblik herpå tilsættes de anvendte glasarter sædvanligvis ret store mængder af en eller flere forbindelser af baryum, bor eller fluor, der bevirker en nedsættelse af smeltetemperaturen, og devitrifice-5 ringstemperaturen eller liquidus-temperaturen og af viskositeten og som derfor er effektive midler til, at man undgår at skulle bruge alt for høje glassmeltetem-peraturer.For this purpose, the glass used is usually added fairly large amounts of one or more compounds of baryum, boron or fluorine which cause a reduction in the melting temperature, and the denitrification temperature or liquidus temperature and the viscosity and which are therefore effective agents for avoiding the need to use excessive glass melt temperatures.
I de for tiden anvendte glasarter anvender man 10 f.eks. ca. 3% baryumoxid, ca. 6% boroxid og ca. 1,5% fluoroxid, men de sædvanligvis anvendte bor- og fluorforbindelser er flygtige ved de temperaturer, der anvendes til fremstilling af glasset, medens fluorforbindelserne er flygtige ved de temperaturer, der gælder 15 for fiberdannelsesprocessen, hvorfor det er nødvendigt fra starten at anvende større tilsætningsmængder under tilberedningen af blandingen. Brugen af ret store mængder af disse stoffer, som er ret kostbare, især baryum-forbindelserne, forøger prisen for de færdige fiberpro-20 dukter.In the currently used glass types, 10 is used e.g. ca. 3% baryum oxide, approx. 6% boron oxide and approx. 1.5% fluorine oxide, but the commonly used boron and fluorine compounds are volatile at the temperatures used to make the glass, while the fluorine compounds are volatile at the temperatures applicable to the fiber formation process, so greater use is needed from the outset. additives during the preparation of the mixture. The use of fairly large amounts of these substances, which are quite expensive, especially the baryum compounds, increases the price of the finished fiber products.
Dertil kommer, at brugen af blandinger, hvori der indgår ret store mængder bor, fluor eller baryum, indebærer, at der skal tages forholdsregler. Specielt for bor og fluor giver anlægget til produktion af smel-25 tet glas flygtige bestanddele til gene for miljøet, og for ikke at forurene atmosfæren må man sørge for en speciel behandling af de gasarter, der udgår fra anlægget, for herved på passende måde at fjerne disse bestanddele .In addition, the use of mixtures which contain fairly large amounts of boron, fluorine or baryum means that precautions must be taken. Especially for boron and fluorine, the plant for the production of molten glass provides volatile constituents to the environment, and in order not to pollute the atmosphere, special treatment of the gases emanating from the plant must be carried out in an appropriate manner. remove these constituents.
30 Endelig giver de opnåede, relativt bløde glasar ter fibre, der ikke har hele den ønskede styrke ved de høje temperaturer.30 Finally, the obtained relatively soft glazes yield fibers which do not have all the desired strength at the high temperatures.
Under hensyntagen hertil må det anses for hensigtsmæssigt på den ovenfor omtalte måde at producere 35 fibre på basis af hårde eller meget hårde glasarter, men for sådanne glasarter med relativt højere smelte-Taking this into account, it must be considered appropriate in the above-mentioned manner to produce 35 fibers based on hard or very hard glass, but for such glass with relatively higher melting properties.
DK 164002 BDK 164002 B
3 temperatur, devitrificeringstemperatur eller liquidus-temperatur viser det sig, at de sædvanlige centrifugelegemers holdbarhed og levetid nedsættes meget væsentligt bl.a. på grund af korrosion og deformation.3 temperature, devitrification temperature or liquidus temperature, it turns out that the durability and service life of the conventional centrifuge bodies is very significantly reduced, ia. due to corrosion and deformation.
5 _ Opfindelsen tager sigte på at afhjælpe disse vanskeligheder og med henblik herpå er legeringen ifølge opfindelsen ejendommelig ved, at den har følgende beskaffenhed: 10 Bestanddele Værdiområder (i vægtprocenter) C 0,65 - 0,83The invention aims to alleviate these difficulties and for this purpose the alloy according to the invention is peculiar in that it has the following characteristics: 10 Components Value ranges (in weight percentages) C 0.65 - 0.83
Cr 27,5 - 31 W 6-7,8Cr 27.5 - 31 W 6-7.8
Fe 7-10 15 Si 0,7 - 1,2Fe 7-10 15 Si 0.7 - 1.2
Mn 0,6 - 0,9Mn 0.6 - 0.9
Co 0-0,2 P 0 0,03 S 0 0,02 20 Ni (komplement) 59 - 50Co 0-0.2 P 0 0.03 S 0 0.02 20 Ni (complement) 59 - 50
En række patentskrifter, f.eks. FR-A-1 244 659, FR-A-1 427 614, US-A-3.318.694, US-A-3.522.952, DE-A-2 106 518 og NO- 143.913, angiver diverse typer højtem-25 peraturbestandige legeringer.A number of patents, e.g. FR-A-1,244,659, FR-A-1,427,614, US-A-3,318,694, US-A-3,522,952, DE-A-2,106,518 and NO-143,913, disclose various types of high-25 perature resistant alloys.
Legeringen i henhold til opfindelsen adskiller sig fra de kendte legeringer ved at den bl.a. har et væsentligt større indhold af carbon, hvilket har betydning, fordi det betinger ligevægten i dannelsen af kar-30 bidforbindelser i chrommatrixen. Forøgelsen af carbo-nindhold (inden for visse grænser) bibringer centrifugelegemet større mekanisk styrke og menes at være årsagen til, at der kan anvendes et relativt lille indhold af chrom til dannelse af en matrix, der kan modstå ke-35 misk korrosion.The alloy according to the invention differs from the known alloys in that has a significantly higher carbon content, which is important because it conditions the equilibrium in the formation of carbide compounds in the chromium matrix. The increase in carbon content (within certain limits) imparts greater mechanical strength to the centrifuge body and is believed to be the reason that a relatively small content of chromium can be used to form a matrix that can withstand chemical corrosion.
Reduktionen af chromindholdet giver mulighed for at øge jernindholdet og for dermed også at få en billigere legering.The reduction of the chromium content provides an opportunity to increase the iron content and thus also to obtain a cheaper alloy.
DK 164002 BDK 164002 B
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Brugen af legeringen ifølge opfindelsen giver således mulighed for på mærkbar måde at forlænge centrifugelegemets levetid, og det har ved forsøg vist sig, at denne legering er specielt anvendelig til cen-5 trifugelegemer af stor diameter, f.eks. en diameter på mindst 400 mm. Et centrifugelegeme fremstillet på basis af denne legering sikrer i øvrigt en endnu længere levetid, når det også anvendes til fibrering af de blødere glasarter af i og for sig kendt type.Thus, the use of the alloy according to the invention allows to appreciably extend the life of the centrifuge body, and it has been shown in experiments that this alloy is particularly useful for large diameter centrifuge bodies, e.g. a diameter of at least 400 mm. A centrifuge body made on the basis of this alloy also ensures an even longer service life when it is also used for fibrating the softer types of glass known per se.
10 Specielt med henblik på fibrering af hårde gla sarter med viskositet på ca. 1000 P ved temperaturer større end ca. 1150°C og med devitrificeringstemperatu-rer på ca. 1030°C kan centrifugelegemet fremstillet ved hjælp af legeringen ifølge opfindelsen fremstilles af 15 en legering med speciel sammensætning, som er i stand til at tåle de fornødne temperaturer. Hvis der anvendes bløde glasarter, giver brugen af denne legering mulighed for at forlænge centrifugelegemets levetid. Denne legering er som følger, idet de forskellige bestanddele 20 angives i vægtprocenter:10 Specifically for fibrous hard glaze fibers having a viscosity of approx. 1000 P at temperatures greater than approx. 1150 ° C and with devitrification temperatures of approx. At 1030 ° C, the centrifuge body made by the alloy of the invention can be made of a special composition alloy capable of withstanding the required temperatures. If soft glass is used, the use of this alloy allows the life of the centrifuge body to be extended. This alloy is as follows, with the various constituents 20 being indicated in weight percentages:
Bestanddele Værdiområder C 0,65 - 0,83Ingredients Value ranges C 0.65 - 0.83
Cr 27,5 - 31 25 W 6 7,8Cr 27.5 - 31 25 W 6 7.8
Fe 7-10Fe 7-10
Si 0,7 - 1,2Si 0.7 - 1.2
Mn 0,6-0,9Mn 0.6-0.9
Co 0-0,2 30 P 0 - 0,03 S 0 - 0,02Co 0-0.2 30 P 0 - 0.03 S 0 - 0.02
Ni (komplement) 59 - 50Ni (complement) 59 - 50
En legering af denne art er specielt anvendelig 35 til centrifugelegemer af stor diameter, f.eks. diameter på mindst 400 mm.An alloy of this kind is particularly useful for large diameter centrifuge bodies, e.g. diameter of at least 400 mm.
Claims (3)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7834616A FR2443436B1 (en) | 1978-12-08 | 1978-12-08 | GLASS FIBRATION PROCESS, IMPLEMENTATION DEVICE AND FIBER PRODUCTS |
FR7834616 | 1978-12-08 | ||
DK522679A DK154496C (en) | 1978-12-08 | 1979-12-07 | METHOD AND APPARATUS FOR MANUFACTURING FIBERS FROM MOLD GLASS |
DK522679 | 1979-12-07 |
Publications (4)
Publication Number | Publication Date |
---|---|
DK290284A DK290284A (en) | 1984-06-13 |
DK290284D0 DK290284D0 (en) | 1984-06-13 |
DK164002B true DK164002B (en) | 1992-04-27 |
DK164002C DK164002C (en) | 1992-09-21 |
Family
ID=26067785
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK290184A DK163986C (en) | 1978-12-08 | 1984-06-13 | Centrifuge bodies for melting molten glass fiber |
DK290284A DK164002C (en) | 1978-12-08 | 1984-06-13 | ALLOY FOR USE BY MANUFACTURE OF A CENTRIFUGULE FOR USE BY FIBERATION OF MINERAL MATERIALS LIKE GLASS |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK290184A DK163986C (en) | 1978-12-08 | 1984-06-13 | Centrifuge bodies for melting molten glass fiber |
Country Status (1)
Country | Link |
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DK (2) | DK163986C (en) |
-
1984
- 1984-06-13 DK DK290184A patent/DK163986C/en active
- 1984-06-13 DK DK290284A patent/DK164002C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK290184D0 (en) | 1984-06-13 |
DK163986C (en) | 1992-09-21 |
DK164002C (en) | 1992-09-21 |
DK290284A (en) | 1984-06-13 |
DK163986B (en) | 1992-04-27 |
DK290184A (en) | 1984-06-13 |
DK290284D0 (en) | 1984-06-13 |
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