GB1060870A - Method and apparatus for relieving a vacuum condition in an extruded tubular member - Google Patents

Method and apparatus for relieving a vacuum condition in an extruded tubular member

Info

Publication number
GB1060870A
GB1060870A GB42793/64A GB4279364A GB1060870A GB 1060870 A GB1060870 A GB 1060870A GB 42793/64 A GB42793/64 A GB 42793/64A GB 4279364 A GB4279364 A GB 4279364A GB 1060870 A GB1060870 A GB 1060870A
Authority
GB
United Kingdom
Prior art keywords
tube
vacuum
billet
pierced
bore
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
GB42793/64A
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.)
Reynolds Metals Co
Original Assignee
Reynolds Metals Co
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 Reynolds Metals Co filed Critical Reynolds Metals Co
Publication of GB1060870A publication Critical patent/GB1060870A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,060,870. Billet piercing; extruding. REYNOLDS METALS CO. Oct. 20, 1964 [Oct. 21, 1963], No. 42793/64. Headings B3H and B3P. In the extrusion of a solid billet into a tube 16 having a closed leading end whereby vacuum is created therein, the tube is pierced to relieve the vacuum. A heated solid billet 15 is placed in a container bore 14 and pierced by a mandrel 29. The billet is then extruded between the mandrel nose 31 and a die 27 to form the tube 16 whose closed bore produces a vacuum. To prevent collapse of the tube the wall is pierced at 41 by a bullet fired from a device 11 mounted in one of the die bolsters 19. The bullet is arrested in a bore 40. Device 11 may be fired manually or automatically by a solenoid 42, Fig. 3 (not shown), controlled by a switch actuated by the leading end of the extruded tube. The latter may be of non-circular section.
GB42793/64A 1963-10-21 1964-10-20 Method and apparatus for relieving a vacuum condition in an extruded tubular member Expired GB1060870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US317521A US3296847A (en) 1963-10-21 1963-10-21 Method and apparatus for relieving a vacuum condition in an extruded tubular member or the like

Publications (1)

Publication Number Publication Date
GB1060870A true GB1060870A (en) 1967-03-08

Family

ID=23234049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42793/64A Expired GB1060870A (en) 1963-10-21 1964-10-20 Method and apparatus for relieving a vacuum condition in an extruded tubular member

Country Status (3)

Country Link
US (1) US3296847A (en)
BE (1) BE654619A (en)
GB (1) GB1060870A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295613A2 (en) * 1987-06-15 1988-12-21 Showa Aluminum Corporation Process for preparing hollow aluminum extrudates for use in vacuum

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165627A (en) * 1977-08-08 1979-08-28 Wean United, Inc. Method and apparatus for closing the end of an extruded tube submerged in water
FR2529484B1 (en) * 1982-07-01 1986-03-21 Secim IMPROVEMENT IN EXTRUSION TUBE SPINNING PROCESSES AND DEVICES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1202744A (en) * 1915-08-21 1916-10-24 Benjamin B Lewis Gun and projectile.
DE430949C (en) * 1922-04-04 1926-06-25 Fenag Tubenfabrik G M B H Process for the production of aluminum tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295613A2 (en) * 1987-06-15 1988-12-21 Showa Aluminum Corporation Process for preparing hollow aluminum extrudates for use in vacuum
EP0295613A3 (en) * 1987-06-15 1989-05-10 Showa Aluminium Corporation Process for preparing hollow aluminum extrudates for use in vacuum

Also Published As

Publication number Publication date
BE654619A (en) 1965-02-15
US3296847A (en) 1967-01-10

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