FR2244587A1 - Reducing the grain size of cast aluminium alloys - by retarding grain-refinement in blocks for remelting - Google Patents

Reducing the grain size of cast aluminium alloys - by retarding grain-refinement in blocks for remelting

Info

Publication number
FR2244587A1
FR2244587A1 FR7427562A FR7427562A FR2244587A1 FR 2244587 A1 FR2244587 A1 FR 2244587A1 FR 7427562 A FR7427562 A FR 7427562A FR 7427562 A FR7427562 A FR 7427562A FR 2244587 A1 FR2244587 A1 FR 2244587A1
Authority
FR
France
Prior art keywords
grain
blocks
remelting
refinement
reducing
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
FR7427562A
Other languages
French (fr)
Other versions
FR2244587B1 (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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke 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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Publication of FR2244587A1 publication Critical patent/FR2244587A1/en
Application granted granted Critical
Publication of FR2244587B1 publication Critical patent/FR2244587B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium

Abstract

In the mfr. of Al or Al alloy blocks intended for remelting, e.g. in foundries, B, Ti or a similar material in the form of a pre-alloy or salt is added to the initial melt. The novelty is that the grain-refining agent is added immediately prior to, or during the casting of the blocks so solidification occurs before expiry of the incubation time needed for max. grain-reinfinement, i.e. before 30 mins. and pref. before 20 mins. Better grain-refining when remelting blocks and slower grain growth during holding times. are obtd.
FR7427562A 1973-09-21 1974-08-08 Reducing the grain size of cast aluminium alloys - by retarding grain-refinement in blocks for remelting Granted FR2244587A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732347490 DE2347490B2 (en) 1973-09-21 1973-09-21 PROCESS FOR THE PRODUCTION OF CAST BLOCKS FROM ALUMINUM OR ITS ALLOYS

Publications (2)

Publication Number Publication Date
FR2244587A1 true FR2244587A1 (en) 1975-04-18
FR2244587B1 FR2244587B1 (en) 1980-08-14

Family

ID=5893217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427562A Granted FR2244587A1 (en) 1973-09-21 1974-08-08 Reducing the grain size of cast aluminium alloys - by retarding grain-refinement in blocks for remelting

Country Status (5)

Country Link
AT (1) AT332007B (en)
CH (1) CH596906A5 (en)
DE (1) DE2347490B2 (en)
FR (1) FR2244587A1 (en)
NO (1) NO141335C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574514A1 (en) * 1991-03-07 1993-12-22 Kb Alloys Inc. Master alloy hardeners

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574514A1 (en) * 1991-03-07 1993-12-22 Kb Alloys Inc. Master alloy hardeners
EP0574514A4 (en) * 1991-03-07 1994-06-22 Kb Alloys Inc Master alloy hardeners
US5405578A (en) * 1991-03-07 1995-04-11 Kb Alloys, Inc. Method for preparing master alloy hardeners for use in preparing an aluminum alloy

Also Published As

Publication number Publication date
AT332007B (en) 1976-09-10
DE2347490B2 (en) 1976-12-23
NO141335B (en) 1979-11-12
FR2244587B1 (en) 1980-08-14
ATA634374A (en) 1975-12-15
NO141335C (en) 1980-02-20
CH596906A5 (en) 1978-03-31
NO743249L (en) 1975-04-14
DE2347490A1 (en) 1975-04-10

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