FR2137174A3 - Foundry sand prepn - to improve the stripping of castings - Google Patents

Foundry sand prepn - to improve the stripping of castings

Info

Publication number
FR2137174A3
FR2137174A3 FR7117577A FR7117577A FR2137174A3 FR 2137174 A3 FR2137174 A3 FR 2137174A3 FR 7117577 A FR7117577 A FR 7117577A FR 7117577 A FR7117577 A FR 7117577A FR 2137174 A3 FR2137174 A3 FR 2137174A3
Authority
FR
France
Prior art keywords
prepn
castings
stripping
improve
foundry sand
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
FR7117577A
Other languages
French (fr)
Other versions
FR2137174B3 (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.)
DOITTAU PRODUITS METAL
Original Assignee
DOITTAU PRODUITS METAL
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 DOITTAU PRODUITS METAL filed Critical DOITTAU PRODUITS METAL
Priority to FR7117577A priority Critical patent/FR2137174A3/en
Publication of FR2137174A3 publication Critical patent/FR2137174A3/en
Application granted granted Critical
Publication of FR2137174B3 publication Critical patent/FR2137174B3/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
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives

Abstract

0.1-0.6 wt.% technically pure bitumen is introduced into the mass of conventionally prepd. foundry sand by means of a pulveriser as the sand is being mixed. The bitumen is deposited on the sand in the form of spherical granules 10-70 in dia.
FR7117577A 1971-05-14 1971-05-14 Foundry sand prepn - to improve the stripping of castings Granted FR2137174A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7117577A FR2137174A3 (en) 1971-05-14 1971-05-14 Foundry sand prepn - to improve the stripping of castings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7117577A FR2137174A3 (en) 1971-05-14 1971-05-14 Foundry sand prepn - to improve the stripping of castings

Publications (2)

Publication Number Publication Date
FR2137174A3 true FR2137174A3 (en) 1972-12-29
FR2137174B3 FR2137174B3 (en) 1974-03-08

Family

ID=9077078

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7117577A Granted FR2137174A3 (en) 1971-05-14 1971-05-14 Foundry sand prepn - to improve the stripping of castings

Country Status (1)

Country Link
FR (1) FR2137174A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199485A1 (en) * 1972-08-24 1974-04-12 Shell Int Research
FR2448399A1 (en) * 1979-01-12 1980-09-05 Proizv Ob BINDER FOR AIR-SOLIDABLE MOLDING SAND, PROCESS FOR PREPARING SAID BINDER AND AIR-SOLIDABLE MOLDING SAND CONTAINING SAID BINDER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199485A1 (en) * 1972-08-24 1974-04-12 Shell Int Research
FR2448399A1 (en) * 1979-01-12 1980-09-05 Proizv Ob BINDER FOR AIR-SOLIDABLE MOLDING SAND, PROCESS FOR PREPARING SAID BINDER AND AIR-SOLIDABLE MOLDING SAND CONTAINING SAID BINDER

Also Published As

Publication number Publication date
FR2137174B3 (en) 1974-03-08

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