GB224164A - Process for the manufacture of articles in silica glass - Google Patents
Process for the manufacture of articles in silica glassInfo
- Publication number
- GB224164A GB224164A GB11040/24A GB1104024A GB224164A GB 224164 A GB224164 A GB 224164A GB 11040/24 A GB11040/24 A GB 11040/24A GB 1104024 A GB1104024 A GB 1104024A GB 224164 A GB224164 A GB 224164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica
- crucible
- tube
- graphite
- pressure
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B15/00—Drawing glass upwardly from the melt
- C03B15/14—Drawing tubes, cylinders, or rods from the melt
- C03B15/16—Drawing tubes, cylinders or rods, coated with coloured layers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/021—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by induction heating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
Abstract
224,164. Quartz et Silice. Nov. 2, 1923, [Convention clate]. Forming silica - glass articles.-A process of manufacturing articles of fused silica, or of glass having a high silica content, consists in melting the silica in a crucible of refractorv and conducting material by the induction of high-frequency electric current, expelling the plastic silica from the crucible either by pressure or by drawing, and then shaping the mass by pressure or by other suitable mechanical treatment. The charge a of sand, rock crystal or other suitable material is placed in a crucible b, made of graphite, which is closed at its upper end by a tightly fitted cover c with an inlet tube d. The bottom of the crucible is closed by a removable plug e of graphite. The furnace comprises a tube f, of copper or aluminium, wound on a cylinder g of insulating material. Water is circulated through the tube, and the space around the crucible is packed with a heat-insulator h, such as lampblack. High-frequency electric currents, produced by known means such as a highfrequency alternator, spark or arc generator, or thermionic valves, is passed through the tube f, and the crucible is raised to a high temperature by induction. When the material is fused, the plug e is removed and the plastic silica is expelled by means of gas under pressure admitted through the tube d. If the silica is to be made into rod, the plug e is replaced by a graphite draw-plate, and the silica. is extruded by the gas pressure, an external drawing device being also used if necessary. In making tubing, a tube is used to form a core for the extrusion aperture and for permitting the introduction of blowing air into the interior of the silica mass. The melting can be carried out in vacuo or in an atmosphere of a suitable gas introduced into the crucible through the tube d.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR585214T | 1923-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB224164A true GB224164A (en) | 1924-11-06 |
Family
ID=8959845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11040/24A Expired GB224164A (en) | 1923-11-02 | 1924-05-05 | Process for the manufacture of articles in silica glass |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1601523A (en) |
| FR (1) | FR585214A (en) |
| GB (1) | GB224164A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485851A (en) * | 1947-02-27 | 1949-10-25 | Glass Fibers Inc | Electric melting furnace |
| US2635125A (en) * | 1949-09-30 | 1953-04-14 | American Optical Corp | Glass induction furnace |
| US2643201A (en) * | 1949-12-24 | 1953-06-23 | Nat Res Corp | Coating method and apparatus therefor |
| US2674640A (en) * | 1952-03-21 | 1954-04-06 | Ajax Engineering Corp | Apparatus for dispensing molten metal |
| US2781411A (en) * | 1953-06-10 | 1957-02-12 | Jenaer Glaswerk Schott & Gen | Process and apparatus for purifying glass |
| FR1101090A (en) * | 1953-06-11 | 1955-09-27 | Jenaer Glaswerk Schott & Gen | Glass refining |
| NL100133C (en) * | 1954-06-30 | |||
| US3484840A (en) * | 1968-01-26 | 1969-12-16 | Trw Inc | Method and apparatus for melting and pouring titanium |
| US4199343A (en) * | 1977-08-29 | 1980-04-22 | Corning Glass Works | Mixing and injection molding hydrosilicates |
-
1923
- 1923-11-02 FR FR585214D patent/FR585214A/en not_active Expired
-
1924
- 1924-05-05 GB GB11040/24A patent/GB224164A/en not_active Expired
- 1924-07-15 US US726142A patent/US1601523A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR585214A (en) | 1925-02-23 |
| US1601523A (en) | 1926-09-28 |
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