FR2189146A1 - Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture - Google Patents

Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture

Info

Publication number
FR2189146A1
FR2189146A1 FR7222283A FR7222283A FR2189146A1 FR 2189146 A1 FR2189146 A1 FR 2189146A1 FR 7222283 A FR7222283 A FR 7222283A FR 7222283 A FR7222283 A FR 7222283A FR 2189146 A1 FR2189146 A1 FR 2189146A1
Authority
FR
France
Prior art keywords
drying
air
moulded
core
purge
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
FR7222283A
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.)
Ateliers Diederichs SA
Original Assignee
Ateliers Diederichs 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 Ateliers Diederichs SA filed Critical Ateliers Diederichs SA
Priority to FR7222283A priority Critical patent/FR2189146A1/en
Publication of FR2189146A1 publication Critical patent/FR2189146A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Gases (AREA)

Abstract

Foundry cores contained within walls which are porous to air and surrounded by an ancillary chamber which can be pressurised with preheated air which will therefore flow into the moulded sand to gather moisture. Pref. the drying chamber has a series of interconnected compartments equalising the pressure around and in the middle of several cores. The chamber may be evacuated to force the air through the core and recycle it to remove the water. Pref. the casings are made of glass reinforced epoxy resin the porous walls having holes with filters for passing air without losing sand or resin from the core. Significantly reduces core drying cycles compared with ambient temp. purging.
FR7222283A 1972-06-16 1972-06-16 Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture Pending FR2189146A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7222283A FR2189146A1 (en) 1972-06-16 1972-06-16 Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7222283A FR2189146A1 (en) 1972-06-16 1972-06-16 Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture

Publications (1)

Publication Number Publication Date
FR2189146A1 true FR2189146A1 (en) 1974-01-25

Family

ID=9100522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7222283A Pending FR2189146A1 (en) 1972-06-16 1972-06-16 Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture

Country Status (1)

Country Link
FR (1) FR2189146A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509453A1 (en) * 1981-07-07 1983-01-14 Nippon Kokan Kk APPARATUS FOR CURING AND HEATING A REFRACTORY TRIM
US6505671B1 (en) * 2000-12-28 2003-01-14 Hayes Lemmerz International, Inc. Method for producing a sand core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509453A1 (en) * 1981-07-07 1983-01-14 Nippon Kokan Kk APPARATUS FOR CURING AND HEATING A REFRACTORY TRIM
US6505671B1 (en) * 2000-12-28 2003-01-14 Hayes Lemmerz International, Inc. Method for producing a sand core

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