GB982689A - Tube drawing - Google Patents
Tube drawingInfo
- Publication number
- GB982689A GB982689A GB42456/62A GB4245662A GB982689A GB 982689 A GB982689 A GB 982689A GB 42456/62 A GB42456/62 A GB 42456/62A GB 4245662 A GB4245662 A GB 4245662A GB 982689 A GB982689 A GB 982689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- glass
- tubing
- plate
- passes
- 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
- 239000011521 glass Substances 0.000 abstract 5
- 239000006060 molten glass Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
In a method for continuously drawing glass tubing from a body of molten glass, the glass is drawn through a cooled tubular die the entrance end of which is surrounded by a vacuum chamber. Molten glass 12 flows through an outlet 13 in a forehearth 11 over a tubular mandrel 15 including a bore-forming bell 18, and passes through a hole in a graphite or treated metal plate 21 as a molten stream of glass 19. A die 22 is cooled by directing air on to its outer surface through openings 51 in annular tubes 50. Suction is applied to two chambers 23, 33 which connect with the top and bottom respectively of the die 22 and as the molten glass <PICT:0982689/C1/1> <PICT:0982689/C1/2> tube 19 passes through the die 22 it is expanded by the suction into contact with the upper walls of the die 22 which rapidly cool the glass tube 19 causing it to contract slightly away from the walls. On reaching a two-piece plate 41, split at 36, the glass tube 19 laterally displaces the two halves of plate 41 and then passes through drawing rollers 20. In another embodiment, Fig. 3, a vacuum chamber 62 surrounds a die 60 which is provided with spiral slots 61. For producing tubing of other than round cross-section shape, e.g. oval, dies may be used. The mandrel 15 and plate 21 may be offset from the axis of the die 22 to produce tubing with opposite wall areas of different thickness. The invention may also be used in apparatus for the upward drawing of tubing. U.S.A. Specifications 2,009,793 and 2,085,245 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US152498A US3190739A (en) | 1961-11-15 | 1961-11-15 | Tube drawing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB982689A true GB982689A (en) | 1965-02-10 |
Family
ID=22543183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42456/62A Expired GB982689A (en) | 1961-11-15 | 1962-11-09 | Tube drawing |
Country Status (3)
Country | Link |
---|---|
US (1) | US3190739A (en) |
GB (1) | GB982689A (en) |
NL (1) | NL127892C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102781856A (en) * | 2010-02-25 | 2012-11-14 | 康宁股份有限公司 | Method for stabilizing a column of molten material |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL291667A (en) * | 1962-04-18 | 1900-01-01 | ||
US3370112A (en) * | 1963-09-26 | 1968-02-20 | Raychem Corp | Process and apparatus for producing plastic memory articles |
US3274313A (en) * | 1964-07-23 | 1966-09-20 | Union Carbide Corp | Method of making a hollow elongated plastic article |
US3478390A (en) * | 1965-10-22 | 1969-11-18 | Federal Cartridge Corp | Supporting die |
JPS5312928B2 (en) * | 1972-06-15 | 1978-05-06 | ||
US4312659A (en) * | 1979-08-21 | 1982-01-26 | Owens-Illinois, Inc. | Air support system for glass tubing alley |
DE3913875C1 (en) * | 1989-04-27 | 1990-08-09 | Heraeus Quarzschmelze Gmbh, 6450 Hanau, De | |
US4941904A (en) * | 1989-06-19 | 1990-07-17 | Ppg Industries, Inc. | Method and apparatus for forming hollow fibers |
DE69628876T2 (en) * | 1995-04-19 | 2004-04-22 | Corning Inc. | Apparatus and method for forming molten glass-like material in bars |
FR2733225B1 (en) * | 1995-04-19 | 1997-07-04 | Corning Inc | BAR FORMING DEVICE, PARTICULARLY IN VITREOUS MATERIAL |
CN102107527A (en) * | 2010-12-10 | 2011-06-29 | 东莞三联热缩材料有限公司 | Adjustable extension die |
DE102011052067B3 (en) * | 2011-07-22 | 2012-07-26 | Schott Ag | Method and device for preferably continuous production of glass tubes with a predetermined inner profile |
DE102017108549A1 (en) | 2017-04-21 | 2018-10-25 | Schott Ag | Apparatus and method for cooling a glass strand fabricated by means of tube drawing |
WO2020112393A1 (en) * | 2018-11-30 | 2020-06-04 | Corning Incorporated | Apparatuses and methods for heating and cooling glass tubing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2150017A (en) * | 1936-01-10 | 1939-03-07 | Randolph H Barnard | Method of and apparatus for forming glass tubes, rods, and the like |
US2519375A (en) * | 1946-02-16 | 1950-08-22 | Union Carbide & Carbon Corp | Method and apparatus for molding tubing |
FR1031320A (en) * | 1951-01-23 | 1953-06-23 | Raint Gobain | Process for the continuous production of hollow articles in thermoplastic material |
US2780835A (en) * | 1954-03-02 | 1957-02-12 | Orville B Sherman | Apparatus for extruding plastic tubes |
-
1961
- 1961-11-15 US US152498A patent/US3190739A/en not_active Expired - Lifetime
-
1962
- 1962-11-02 NL NL285047A patent/NL127892C/nl active
- 1962-11-09 GB GB42456/62A patent/GB982689A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102781856A (en) * | 2010-02-25 | 2012-11-14 | 康宁股份有限公司 | Method for stabilizing a column of molten material |
Also Published As
Publication number | Publication date |
---|---|
NL127892C (en) | 1970-01-15 |
US3190739A (en) | 1965-06-22 |
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