NO121064B

NO121064B -

Info

Publication number: NO121064B
Application number: NO165088A
Authority: NO
Inventors: H Apesteguy
Original assignee: Panoduz Anstalt
Priority date: 1965-10-14
Filing date: 1966-10-11
Publication date: 1971-01-11
Also published as: US3448554A; IL26645A; FR93752E; ES124853Y; DK124832B; NL6614535A; ES124853U; DE1609396A1; OA02157A; FI46287C; BE688239A; SE319889B; FI46287B; GB1168837A; CH455212A

Description

Glass. Glass.

Oppfinnelsen går ut på glass som har et lite innhold av borsyreanhydrid. Glass i henhold til oppfinnelsen inneholder mindre enn 5 % B2O:! og, foruten kiselsyre og lerjord, 7—10 % kalk og 2—5 % magnesia, hvor magnesiaen og kiselsyren er anvendt i slike forhold at man alltid har The invention is based on glass that has a small content of boric anhydride. Glass according to the invention contains less than 5% B2O:! and, in addition to silicic acid and loam, 7-10% lime and 2-5% magnesia, where the magnesia and silicic acid are used in such proportions that you always have

og innholdet av resterende alkali ligger mellom 11 og 14 %. and the content of residual alkali is between 11 and 14%.

Slike glass har følgende egenskaper: Deres maksimale avglassingshastighet er høyst lik 2 mikron-minutter. Denne has-tighet svarer som kjent til den største has-tighet med hvilken krystallenes dimensjo-ner tiltar, og som er observert ved en be-stemt temperatur for hvert glass og be-stemmes ved den maksimale avglassings-temperatur: den temperatur som svarer til viskositeten 1000 poises ligger mellom 1000° og 1200° C; Such glasses have the following properties: Their maximum devitrification speed is at most 2 micron minutes. As is known, this speed corresponds to the greatest speed with which the dimensions of the crystals increase, and which is observed at a specific temperature for each glass and is determined by the maximum devitrification temperature: the temperature that corresponds to the viscosity 1000 poise is between 1000° and 1200° C;

deres angripbarhet i vann, målt etter Deutsche Glastechnische Gesellschaffs regler er høyst lik 10 mg. their attackability in water, measured according to the Deutsche Glastechnische Gesellschaff's rules, is at most equal to 10 mg.

Denne angripbarhet i vann måles ved at 4 cm3 glasspulver, som passerer mellom siktene 45—50, opphetes i 5 timer ved 100° C i vann hvis volum holdes på 100 ml, hvor-etter man filtrerer den vandige oppløsning og inndamper den til tørrhet, tørker resten ved 150° C og veier den. Resultatet, uttrykt i mg rest pr. 100 ml vann er et mål for glassets angripbarhet. This attackability in water is measured by heating 4 cm3 of glass powder, which passes between sieves 45-50, for 5 hours at 100° C in water whose volume is kept at 100 ml, after which the aqueous solution is filtered and evaporated to dryness, dries the residue at 150° C and weighs it. The result, expressed in mg residue per 100 ml of water is a measure of the attackability of the glass.

Glass i henhold til oppfinnelsen kan anvendes til forskjellige formål. Spesielt kan de med fordel benyttes til fremstilling Glass according to the invention can be used for various purposes. In particular, they can be advantageously used for manufacturing

av glassfibere. De er særlig godt anvend-bare i slike metoder til fremstilling av of glass fibres. They are particularly well-usable in such methods for the production of

glassfibere hvor man anvender centrifu-gallegemer av ildfast stål på grunn av den lave temperatur som kreves for glassets glass fibers where centrifugal gall bodies made of refractory steel are used due to the low temperature required for the glass's

omdannelse til fibere og fordi deres avglassingshastighet er lik null eller er negli-sjerbart liten ved fiberdannelsestempera-turen. Glass i henhold til oppfinnelsen er også egnet til fremstilling av støpte eller pressede gjenstander som bare må angripes lite av vann. conversion to fibers and because their devitrification rate is equal to zero or is negligibly small at the fiber formation temperature. Glass according to the invention is also suitable for the production of molded or pressed objects which must only be slightly attacked by water.

Oppfinnerne har funnet at deter særlig fordelaktig at innholdet av borsyreanhydrid ligger mellom 3 og 5 %, spesielt mellom 4,3 og 4,6%. Et slikt innhold gir et glass som har en tilfredsstillende viskositet i det temperaturområde som passer for trekking av fibere, og samtidig har glasset liten tilbøyelighet til å avglasses. The inventors have found that it is particularly advantageous that the content of boric anhydride is between 3 and 5%, especially between 4.3 and 4.6%. Such a content gives a glass which has a satisfactory viscosity in the temperature range suitable for drawing fibres, and at the same time the glass has little tendency to devitrify.

Eventuelt kan glass i henhold til oppfinnelsen inneholde en liten mengde fluor Optionally, glass according to the invention may contain a small amount of fluorine

(som regel under 4%) for å lette at den (usually below 4%) to facilitate that

temperatur som svarer til viskositeten 1000 poises holder seg mellom 1000° og 1200° C. temperature corresponding to the viscosity 1000 poises is between 1000° and 1200° C.

Glass i henhold til oppfinnelsen kan også inneholde en liten mengde bariumok-syd (som regel under 5 %) som nedsetter viskositeten. Dette oksyd har ingen merk-bar innvirkning på glassets angripbarhet i vann, og har en gunstig virkning ved å ned-sette avglassingshastigheten og senke den øvre avglassingsgrense. Glass according to the invention can also contain a small amount of barium oxide (usually below 5%) which reduces the viscosity. This oxide has no noticeable effect on the attackability of the glass in water, and has a beneficial effect by reducing the devitrification rate and lowering the upper devitrification limit.

Nedenfor gis det eksempler på sam-mensetninger i vektsprosent for glass i henhold til ormfinnelsen: Below are examples of compositions in percentage by weight for glass according to the worm finding:

Nedenfor angis det som eksempler ana-lyser av glass i henhold til oppfinnelsen samt disses egenskaper hva angår angripbarhet i vann, avglassing og viskositet. Below are examples of analyzes of glass according to the invention as well as their properties in terms of attackability in water, devitrification and viscosity.

Eventuelt kan glass i henhold til oppfinnelsen inneholde en liten mengde (under 5 % av titan og/eller zirkonium, hvilken mengde som regel ligger mellom 3,5 og 4,5 %, spesielt mellom 4,0 og 4,2 %. Denne tilsetning nedsetter angripbarheten i vann uten å endre glassets egenskaper hva angår viskositet og avglassing. Optionally, glass according to the invention may contain a small amount (below 5% of titanium and/or zirconium, which amount is usually between 3.5 and 4.5%, especially between 4.0 and 4.2%. This addition reduces the attackability in water without changing the properties of the glass in terms of viscosity and devitrification.

Slike glass kan ha følgende sammen-setninger: Such glasses can have the following compositions:

Patentpåstander : Patent claims:

1. Kiselsyre- og aluminiumoksydholdig glass med et lite innhold av borsyreanhydrid, særlig egnet for fremstilling av glassfibere, karakterisert ved at det inneholder mindre enn 5 % B20;i, 7—10 % CaO og 2—4 % MgO, hvor CaO, MgO og SiOa er anvendt i slike forhold at man alltid har og innholdet av Na^O + KjO ligger mellom 11 og 14 % . 2. Glass ifølge påstand 1, karakterisert ved at det inneholder 3—5 % B2OH, spesielt 4,3—4,6 %. 3. Glass ifølge påstand 1 eller 2, karakterisert ved, at det inneholder 2,8—4 % MgO. 4. Glass ifølge påstand 1, karakterisert ved, at dets prosentvise sammensetning er: 5. Glass ifølge påstand 1, karakterisert ved at dets prosentvise sammensetning er: 6. Glass ifølge påstand 1, karakterisert ved at dets prosentvise sammensetning er: 1. Glass containing silicic acid and alumina with a small content of boric anhydride, particularly suitable for the production of glass fibres, characterized in that it contains less than 5% B20;i, 7-10% CaO and 2-4% MgO, where CaO, MgO and SiOa are used in such conditions that one always has and the content of Na^O + KjO is between 11 and 14%. 2. Glass according to claim 1, characterized in that it contains 3-5% B2OH, especially 4.3-4.6%. 3. Glass according to claim 1 or 2, characterized in that it contains 2.8-4% MgO. 4. Glass according to claim 1, characterized in that its percentage composition is: 5. Glass according to claim 1, characterized in that its percentage composition is: 6. Glass according to claim 1, characterized in that its percentage composition is:

Claims

1. Device for vertical wall constructions consisting of immovably assembled posts and plate panels, where along the two opposite edges of each plate run hooks formed by boy-

ning of the plate, in which counter-bored flanges on the posts formed by open profiles protrude, a wedge profile being folded in by inserting into each of the flange profiles and, firstly, rests with its bottom against the inner surface of the enclosing profile and for the other against said hooks, characterized in that the wedge profile (8b) has side flanges (13) directed against the flanges (2b) of the post (1b) and which serve as stops for extensions (14) arranged at the ends of the panels' (4b) hooks (6b) and which is located in a space between the lateral wall of the post (1b) and said flanges (13) on the wedge profile (8b).

2. Device according to claim 1, characterized in that the extensions (14) at the ends of the panels' (4b) hooks (6b) are wedge-shaped, with one of its sides in contact with the wall of the post and against the other side of the said flange (13) of the wedge profile (8b) supports itself with its edge.

3. Device according to claim 1, characterized in that it comprises support flanges (12) in the form of flat closed rings, where the shape of the central cavity mainly corresponds to the outer contour of the post's (1b) cross-section, which support flanges thus in a sliding manner enclose this and insert themselves between the upper edge of the two to one and the same post on each side of this hooked panels (4b) and the lower edge of the two immediately above panels.

4. Device according to claims 1 and 3, characterized in that the shape of the central opening of the support flange (12) has in its middle part a projection (15) directed inward and which lies between the two oppositely bent flanges (2b) of the profile ( 1b) which forms the post.

5. Device according to claims 1 and 3, characterized in that the wedge profile (8b) inside the post (1b) has a height that is less than the post's height and only substantially equal to the height of a panel (4b) and that it rests on the support flange ( 12) which in turn rests on the wedge profile (8b) which is located immediately below.

6. Device according to claims 1,4 and 5, characterized in that the support flanges (12) and the wedge profiles (8b) by their arrangement above each other in the interior of the post (1b) form an auxiliary post which directly transfers to the substrate the weight of the panels (4b) and the vertical components of the forces acting on them.

7. Device according to claim 1, characterized in that the wedge profile (Bb) and its flanges (13) are formed from a plate bent into a V-shape in its central part and bent outwards at its edges to form curved flanges with the opening facing the same way . as the tip of the V shape.

8. Device according to claim 1, characterized in that the lower edge of each panel (4b) encloses the upper edge of the immediately below panel.

9. Device according to claim 1, characterized in that it comprises at least two rows of panels arranged below each other and with partial overlap, the lower edge of each panel in the top row being folded upwards and in towards the panel's surface and then folded outwards and downwards as that the formed structure (7b) becomes a kind of gutter with a triangular cross-section and open downwards, while the upper edge of the panel is bent downwards and taken up in said gutter on the immediately above panel (fig. 3 and 5.).