FR2095218A3 - Gas hardened foundry moulds - Google Patents

Gas hardened foundry moulds

Info

Publication number
FR2095218A3
FR2095218A3 FR7121373A FR7121373A FR2095218A3 FR 2095218 A3 FR2095218 A3 FR 2095218A3 FR 7121373 A FR7121373 A FR 7121373A FR 7121373 A FR7121373 A FR 7121373A FR 2095218 A3 FR2095218 A3 FR 2095218A3
Authority
FR
France
Prior art keywords
moulds
foundry moulds
pattern
hardened foundry
porous
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
FR7121373A
Other languages
French (fr)
Other versions
FR2095218B3 (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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
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 Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Publication of FR2095218A3 publication Critical patent/FR2095218A3/en
Application granted granted Critical
Publication of FR2095218B3 publication Critical patent/FR2095218B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/162—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents use of a gaseous treating agent for hardening the binder
    • 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)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Mold Materials And Core Materials (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

Foundry moulds and cores made from sodium silicate and silica sand mixture are hardened by carbon dioxide. Porous patterns are used for improved hardening of the moulds and cores. Gas reaches mould or core material readily through porous pattern or a pattern which has a large number of small drilled holes.
FR7121373A 1970-06-12 1971-06-11 Gas hardened foundry moulds Granted FR2095218A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH888570A CH502143A (en) 1970-06-12 1970-06-12 Process for blowing hardening gases into foundry molding materials

Publications (2)

Publication Number Publication Date
FR2095218A3 true FR2095218A3 (en) 1972-02-11
FR2095218B3 FR2095218B3 (en) 1974-03-29

Family

ID=4345838

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7121373A Granted FR2095218A3 (en) 1970-06-12 1971-06-11 Gas hardened foundry moulds

Country Status (4)

Country Link
CH (1) CH502143A (en)
DE (1) DE2129115A1 (en)
FR (1) FR2095218A3 (en)
NL (1) NL7108045A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036277A (en) * 1975-10-17 1977-07-19 J. R. Short Milling Co. High speed method and apparatus for producing foundry molds

Also Published As

Publication number Publication date
DE2129115A1 (en) 1971-12-16
CH502143A (en) 1971-01-31
FR2095218B3 (en) 1974-03-29
NL7108045A (en) 1971-12-14

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