GB982689A - Tube drawing - Google Patents

Tube drawing

Info

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
Application number
GB42456/62A
Inventor
Richmond W Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Glass Works
Original Assignee
Corning Glass Works
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corning Glass Works filed Critical Corning Glass Works
Publication of GB982689A publication Critical patent/GB982689A/en
Expired legal-status Critical Current

Links

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.
GB42456/62A 1961-11-15 1962-11-09 Tube drawing Expired GB982689A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
EP0738689B1 (en) * 1995-04-19 2003-07-02 Corning Incorporated Device and method for shaping molten glassy material into rods
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
CN113365955B (en) * 2018-11-30 2023-10-03 康宁股份有限公司 Apparatus and method for heating and cooling glass tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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
US3190739A (en) 1965-06-22
NL127892C (en) 1970-01-15

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