GB1499728A - Extrusion - Google Patents

Extrusion

Info

Publication number
GB1499728A
GB1499728A GB32942/75A GB3294275A GB1499728A GB 1499728 A GB1499728 A GB 1499728A GB 32942/75 A GB32942/75 A GB 32942/75A GB 3294275 A GB3294275 A GB 3294275A GB 1499728 A GB1499728 A GB 1499728A
Authority
GB
United Kingdom
Prior art keywords
passageway
extrusion
extruded
shaft
die ring
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
GB32942/75A
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB32942/75A priority Critical patent/GB1499728A/en
Priority to US05/709,710 priority patent/US4061011A/en
Priority to CA258,427A priority patent/CA1062423A/en
Priority to SE7608795A priority patent/SE7608795L/en
Priority to FR7623963A priority patent/FR2320177A1/en
Priority to DE19762635304 priority patent/DE2635304A1/en
Priority to IT7668964A priority patent/IT1069894B/en
Priority to JP51093902A priority patent/JPS5935292B2/en
Priority to SU762389409A priority patent/SU627737A3/en
Publication of GB1499728A publication Critical patent/GB1499728A/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
    • B21C23/005—Continuous extrusion starting from solid state material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1499728 Tube extruder UNITED KINGDOM ATOMIC ENERGY AUTHORITY 2 Aug 1976 [6 Aug 1975 12 Sept 1975] 32942/75 and 37674/75 Heading B5A [Also in Division B3] A method of making tube 45 by continuous extrusion comprises introducing non-molten material to be extruded, e.g. a rod of metal, or metal or ceramics powder, or thermoplastics granules, into a circumferential passageway 31 of progressively decreasing cross-section and formed between a first inner member 29, 30 and a second outer member 40, 42, and moving the first and second members relative to one another for causing the material to be drawn along the passageway by frictional drag and to be fed to and extruded through an annular extrusion path 39 adjacent to and in communication about its full circumference with the passageway 31. A stationary framework 21 journals a shaft 24 engageable by a prime mover (not shown), the shaft being formed with a locating flange 26 which tapers to a shoulder 29 and a mandrel 30 thereby providing the floor and one wall of the passageway 31. The other wall of the passageway is formed by a die ring 33 similarly journalled in the framework 21. The passageway is closed by a stationary shoe member 40, 42, which is provided with a single opening to the passageway 31 for feedstock F. Rotation of the shaft 24 draws the feedstock into the passageway and causes rotation of the die ring 33, which may alternatively also be driven. The die ring 33 is eccentric by an amount D to the shaft 24 to provide additional compression of the material as it passes through the extrusion path 39 to form tube 45 of wall thickness 46. In an alternative embodiment, two stationary shoe members (8), (9), Figs. 1, 2 (not shown), are provided permitting two sources of extrusion material (12) to be provided and the extrusion die ring (4) is concentric with the mandrel (3). More than two shoe members, each with its own feed inlet may be provided allowing for a high production rate of extruded tube. The feedstock F to be extruded may be a metal rod or a rod of compactable material in precompacted form such as a metal powder or granules of a thermoplastics or ceramics powder.
GB32942/75A 1975-08-06 1975-08-06 Extrusion Expired GB1499728A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB32942/75A GB1499728A (en) 1975-08-06 1975-08-06 Extrusion
US05/709,710 US4061011A (en) 1975-08-06 1976-07-29 Extrusion
CA258,427A CA1062423A (en) 1975-08-06 1976-08-04 Extrusion
SE7608795A SE7608795L (en) 1975-08-06 1976-08-05 KIT FOR MANUFACTURE OF PIPES BY CONTINUOUS EXTENSION AND DEVICE FOR PERFORMING THE KIT
FR7623963A FR2320177A1 (en) 1975-08-06 1976-08-05 METHOD AND APPARATUS FOR THE PRODUCTION OF TUBES BY CONTINUOUS EXTRUSION
DE19762635304 DE2635304A1 (en) 1975-08-06 1976-08-05 EXTRUSION PROCESS AND DEVICE
IT7668964A IT1069894B (en) 1975-08-06 1976-08-05 PROCEDURE AND APPARATUS FOR THE CONTINUOUS EXTRUSION OF METAL TUBES
JP51093902A JPS5935292B2 (en) 1975-08-06 1976-08-06 Method and device for manufacturing metal tubes by continuous extrusion
SU762389409A SU627737A3 (en) 1975-08-06 1976-08-06 Method of continuous extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32942/75A GB1499728A (en) 1975-08-06 1975-08-06 Extrusion

Publications (1)

Publication Number Publication Date
GB1499728A true GB1499728A (en) 1978-02-01

Family

ID=10346287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32942/75A Expired GB1499728A (en) 1975-08-06 1975-08-06 Extrusion

Country Status (2)

Country Link
GB (1) GB1499728A (en)
SU (1) SU627737A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125788A2 (en) * 1983-04-12 1984-11-21 B.W.E. Limited Continuous extrusion apparatus
GB2149714A (en) * 1983-11-07 1985-06-19 Metrode Products Limited Extrusion process
ES2036960A1 (en) * 1992-04-28 1993-11-01 Prial Technical Services Calculating system for constructing dies for extruding solid aluminum shapes.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125788A2 (en) * 1983-04-12 1984-11-21 B.W.E. Limited Continuous extrusion apparatus
EP0125788A3 (en) * 1983-04-12 1986-12-30 Babcock Wire Equipment Limited Continuous extrusion apparatus
GB2149714A (en) * 1983-11-07 1985-06-19 Metrode Products Limited Extrusion process
ES2036960A1 (en) * 1992-04-28 1993-11-01 Prial Technical Services Calculating system for constructing dies for extruding solid aluminum shapes.

Also Published As

Publication number Publication date
SU627737A3 (en) 1978-10-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee