GB993100A - Method and apparatus for forming articles - Google Patents

Method and apparatus for forming articles

Info

Publication number
GB993100A
GB993100A GB44186/63A GB4418663A GB993100A GB 993100 A GB993100 A GB 993100A GB 44186/63 A GB44186/63 A GB 44186/63A GB 4418663 A GB4418663 A GB 4418663A GB 993100 A GB993100 A GB 993100A
Authority
GB
United Kingdom
Prior art keywords
fluid
pressure
produced
ram
piston
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
GB44186/63A
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.)
Barogenics Inc
Original Assignee
Barogenics Inc
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 Barogenics Inc filed Critical Barogenics Inc
Publication of GB993100A publication Critical patent/GB993100A/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
    • B21C23/007—Hydrostatic extrusion
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)

Abstract

993,100. Extruding plastic material. BAROGENICS Inc. Nov. 8, 1963 [Nov. 9, 1962], No. 44186/63. Heading B5A. [Also in Division B3] A workpiece 45 is deformed by fluid pressure acting directly or indirectly on the workpiece by first pressurizing the fluid to a primary pressure and then applying a transient secondary pressure produced by a shock wave to initiate the deformation. In an hydrostatic extrusion apparatus as described in Specification 942,642, a billet 45 surrounded by hydraulic fluid 46 is enclosed in a chamber 12 closed by a ram 35 carrying one or more extrusion dies 70, 71. The ram is moved upwardly to apply primary pressure to fluid 46, by a piston 25 in cylinder 17 supplied with hydraulic fluid through port 31. Secondary pressure to initiate extrusion is applied by a shock wave produced by a high-voltage discharge across electrodes 90, 91 connected to capacitors 102, transformer 103 and rectifier 104. The electrodes may alternatively be provided below piston 25 in cylinder 17. In another embodiment, Fig. 4, the billet 130 is extruded directly through die 126 by ram 135 connected to hydraulic piston 136. Primary fluid pressure is produced in chamber 137 by an hydraulic pump acting through conduit 140. The secondary pressure is produced by an explosive charge 145 detonated by a battery 151. Alternatively a thin wire may be exploded by a high-current pulse. U.S.A. Specification 3,063,594 also is referred to.
GB44186/63A 1962-11-09 1963-11-08 Method and apparatus for forming articles Expired GB993100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US236602A US3181328A (en) 1962-11-09 1962-11-09 Shock aided extrusion

Publications (1)

Publication Number Publication Date
GB993100A true GB993100A (en) 1965-05-26

Family

ID=22890175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44186/63A Expired GB993100A (en) 1962-11-09 1963-11-08 Method and apparatus for forming articles

Country Status (3)

Country Link
US (1) US3181328A (en)
DE (1) DE1452210A1 (en)
GB (1) GB993100A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344507A (en) * 1962-12-19 1967-10-03 Atomic Energy Authority Uk Hydrostatic extrusion of sheathed ceramic nuclear fuel material
US3344636A (en) * 1963-04-04 1967-10-03 Council Scient Ind Res Extrusion of metals
US3306089A (en) * 1964-02-24 1967-02-28 Barogenics Inc Control of stresses during shock-aided hydrostatic extrusion
DE1281380B (en) * 1964-04-23 1968-10-24 Bbc Brown Boveri & Cie Device for high-performance shock deformation
US3512384A (en) * 1965-11-18 1970-05-19 Inoue K Shaping apparatus using electric-discharge pressure
US3397562A (en) * 1966-04-08 1968-08-20 Western Electric Co Method and apparatus for the extrusion of metal tubes and billets by an initial impulsive force and the subsequent application of uniform extrusion forces
GB1204314A (en) * 1966-09-21 1970-09-03 Atomic Energy Authority Uk Improvements in or relating to nuclear reactors
US3548625A (en) * 1967-07-05 1970-12-22 Western Electric Co Collapsible feed mechanism
US3531974A (en) * 1968-09-26 1970-10-06 Ltv Aerospace Corp Force-distributing apparatus
US3531973A (en) * 1968-09-26 1970-10-06 Ltv Aerospace Corp Threaded,fluid-actuated apparatus
FR2472957A1 (en) * 1980-01-04 1981-07-10 Ural I Chernykh Metal Variable diameter chamber in hydraulic press - allows plug to produce force to press matrix against container
US10077644B2 (en) 2013-03-15 2018-09-18 Chevron U.S.A. Inc. Method and apparatus for generating high-pressure pulses in a subterranean dielectric medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA476793A (en) * 1951-09-11 W. Bridgman Percy Art of extrusion
US2962164A (en) * 1959-12-14 1960-11-29 Albert W Scribner Metal extrusion

Also Published As

Publication number Publication date
US3181328A (en) 1965-05-04
DE1452210A1 (en) 1969-04-30

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