FR2228551A1 - Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould - Google Patents

Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould

Info

Publication number
FR2228551A1
FR2228551A1 FR7316465A FR7316465A FR2228551A1 FR 2228551 A1 FR2228551 A1 FR 2228551A1 FR 7316465 A FR7316465 A FR 7316465A FR 7316465 A FR7316465 A FR 7316465A FR 2228551 A1 FR2228551 A1 FR 2228551A1
Authority
FR
France
Prior art keywords
mould
core
water pressure
internal water
cylinder
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.)
Granted
Application number
FR7316465A
Other languages
French (fr)
Other versions
FR2228551B1 (en
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.)
ETA SA
Original Assignee
ETA SA
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 ETA SA filed Critical ETA SA
Priority to FR7316465A priority Critical patent/FR2228551A1/en
Publication of FR2228551A1 publication Critical patent/FR2228551A1/en
Application granted granted Critical
Publication of FR2228551B1 publication Critical patent/FR2228551B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/049—Deforming bodies having a closed end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/08—Making hollow objects characterised by the structure of the objects ball-shaped objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles

Abstract

Fabrication of hollow sheet metal sphere e.g. for cistern: process entails the deformation of a core(2) supported cylinder(1) of say 20mm thickness metal by sustained internal water pressure: the deformation taking place within an internally spherical two piece mould(9). The core(2), a round diaphragmed tube drilled axially and centrally diametrically is sheathed by the cylinder(1) and its in situ welded circular end plates(6). The cylinder of length pref. 2.5 times dia. fits snugly in the mould(9)- welds bearing thus on mould wall and limiting weld zone deformation. Water at 20 to 40 kg/cm2 pressure is fed axially and the core is demountable and extractable via a contrived aperture.
FR7316465A 1973-05-08 1973-05-08 Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould Granted FR2228551A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7316465A FR2228551A1 (en) 1973-05-08 1973-05-08 Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7316465A FR2228551A1 (en) 1973-05-08 1973-05-08 Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould

Publications (2)

Publication Number Publication Date
FR2228551A1 true FR2228551A1 (en) 1974-12-06
FR2228551B1 FR2228551B1 (en) 1975-12-26

Family

ID=9118947

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7316465A Granted FR2228551A1 (en) 1973-05-08 1973-05-08 Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould

Country Status (1)

Country Link
FR (1) FR2228551A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789915A1 (en) * 1999-02-23 2000-08-25 Air Liquide ENVELOPE FORMING METHOD, ENCLOSURE THUS OBTAINED, AND USE OF SUCH ENVELOPES
EP1138408A2 (en) * 2000-03-31 2001-10-04 hde Metallwerk GmbH Method for making high volume hollow bodies

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715377A (en) * 1954-03-23 1955-08-16 Jr Hartwell H Gary Method of forming heads for boilers, pressure vessels, tanks, and the like
FR1187964A (en) * 1956-11-14 1959-09-17 Thompson J Wolverhampton Ltd Improvements to a method and device for forming a dome-shaped part from sheet metal
US3096576A (en) * 1963-07-09 parilla
US3688535A (en) * 1968-06-07 1972-09-05 Continental Can Co Apparatus for electrohydraulic pressure arc control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096576A (en) * 1963-07-09 parilla
US2715377A (en) * 1954-03-23 1955-08-16 Jr Hartwell H Gary Method of forming heads for boilers, pressure vessels, tanks, and the like
FR1187964A (en) * 1956-11-14 1959-09-17 Thompson J Wolverhampton Ltd Improvements to a method and device for forming a dome-shaped part from sheet metal
US3688535A (en) * 1968-06-07 1972-09-05 Continental Can Co Apparatus for electrohydraulic pressure arc control

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
"OUTILLAGE A PRESSION D'HUILE POUR LE TRAVAIL DU CUIVRE") *
"OUTILLAGE A PRESSION D'HUILE POUR LE TRAVAIL DU CUIVRE) *
(REVUE FR "LA PRATIQUE DES INDUSTRIES MECANIQUES" DE MARS 1962, PAGE 67 ARTICLE INTITULE *
REVUE FR "LA PRATIQUE DES INDUSTRIES MECANIQUES" DE MARS 1962, PAGES 67 ARTICLE INTITULE *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789915A1 (en) * 1999-02-23 2000-08-25 Air Liquide ENVELOPE FORMING METHOD, ENCLOSURE THUS OBTAINED, AND USE OF SUCH ENVELOPES
EP1033188A1 (en) * 1999-02-23 2000-09-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for fabricating an envelope, envelope so obtained and utilisation of such envelope
EP1138408A2 (en) * 2000-03-31 2001-10-04 hde Metallwerk GmbH Method for making high volume hollow bodies
EP1138408A3 (en) * 2000-03-31 2002-06-26 hde Metallwerk GmbH Method for making high volume hollow bodies
US6684475B2 (en) 2000-03-31 2004-02-03 Hde Solutions Gmbh Method of making large volume hollow bodies

Also Published As

Publication number Publication date
FR2228551B1 (en) 1975-12-26

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Legal Events

Date Code Title Description
ST Notification of lapse