FR2369036A2 - IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES - Google Patents

IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES

Info

Publication number
FR2369036A2
FR2369036A2 FR7732773A FR7732773A FR2369036A2 FR 2369036 A2 FR2369036 A2 FR 2369036A2 FR 7732773 A FR7732773 A FR 7732773A FR 7732773 A FR7732773 A FR 7732773A FR 2369036 A2 FR2369036 A2 FR 2369036A2
Authority
FR
France
Prior art keywords
molds
mixture
manufacturing processes
foundry cores
diaphragm
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.)
Pending
Application number
FR7732773A
Other languages
French (fr)
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.)
Baker Perkins Holdings Ltd
Original Assignee
Baker Perkins Holdings Ltd
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
Priority claimed from GB3132574A external-priority patent/GB1470672A/en
Application filed by Baker Perkins Holdings Ltd filed Critical Baker Perkins Holdings Ltd
Publication of FR2369036A2 publication Critical patent/FR2369036A2/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/123—Gas-hardening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

Dans le procédé selon l'invention, pour tasser un mélange sable/liant 25 dans une boîte à moule 1 et pour traiter le mélange avec un gaz de durcissement, on utilise un diaphragme perméable 20 et un diaphragme imperméable 21 et un conduit d'aspiration 24 pour aspirer l'air hors de la boîte 1 et pour attirer les diaphragmes contre la surface du mélange 25, un conduit 22 étant prévu pour faire passer ensuite un gaz de durcissement entre les diaphragmes 20, 21 et dans le mélange 25 à travers le diaphragme 20.In the method according to the invention, to compact a sand / binder mixture 25 in a mold box 1 and to treat the mixture with a curing gas, a permeable diaphragm 20 and an impermeable diaphragm 21 and a suction duct are used. 24 to draw air out of the box 1 and to draw the diaphragms against the surface of the mixture 25, a conduit 22 being provided to then pass a curing gas between the diaphragms 20, 21 and into the mixture 25 through the diaphragm 20.

FR7732773A 1974-07-15 1977-10-28 IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES Pending FR2369036A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3132574A GB1470672A (en) 1974-07-15 1974-07-15 Manufacture of foundry moulds and cores
GB4546976A GB1562725A (en) 1974-07-15 1976-11-02 Preparing foundry forms

Publications (1)

Publication Number Publication Date
FR2369036A2 true FR2369036A2 (en) 1978-05-26

Family

ID=26260848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7732773A Pending FR2369036A2 (en) 1974-07-15 1977-10-28 IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES

Country Status (3)

Country Link
DE (1) DE2749527A1 (en)
FR (1) FR2369036A2 (en)
GB (1) GB1562725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516819A1 (en) * 1981-11-26 1983-05-27 Sintokogio Ltd Sand mould prepn. - by applying a vacuum for sand compression and penetration by hardening gas

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5855149A (en) * 1981-09-28 1983-04-01 Sintokogio Ltd Gas hardening type molding device for master mold
DE3145623C2 (en) * 1981-11-17 1984-12-06 Sintokogio, Ltd., Nagoya, Aichi Method of making a casting mold

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1224772A (en) * 1958-05-19 1960-06-27 Double membrane machine for sand mold making
US3156958A (en) * 1964-11-17 Foundry molding machine
GB1354822A (en) * 1971-02-11 1974-06-05 Ahlstroem Oy Process for hardening with combustion gases a casting mould or core
FR2278427A1 (en) * 1974-07-15 1976-02-13 Baker Perkins Holdings Ltd IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156958A (en) * 1964-11-17 Foundry molding machine
FR1224772A (en) * 1958-05-19 1960-06-27 Double membrane machine for sand mold making
GB1354822A (en) * 1971-02-11 1974-06-05 Ahlstroem Oy Process for hardening with combustion gases a casting mould or core
FR2278427A1 (en) * 1974-07-15 1976-02-13 Baker Perkins Holdings Ltd IMPROVEMENTS IN THE MANUFACTURING PROCESSES OF MOLDS AND FOUNDRY CORES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516819A1 (en) * 1981-11-26 1983-05-27 Sintokogio Ltd Sand mould prepn. - by applying a vacuum for sand compression and penetration by hardening gas

Also Published As

Publication number Publication date
GB1562725A (en) 1980-03-12
DE2749527A1 (en) 1978-05-03

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