EP1264903A3 - Refining of aluminium casting alloys by boron addition - Google Patents

Refining of aluminium casting alloys by boron addition Download PDF

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Publication number
EP1264903A3
EP1264903A3 EP02009964A EP02009964A EP1264903A3 EP 1264903 A3 EP1264903 A3 EP 1264903A3 EP 02009964 A EP02009964 A EP 02009964A EP 02009964 A EP02009964 A EP 02009964A EP 1264903 A3 EP1264903 A3 EP 1264903A3
Authority
EP
European Patent Office
Prior art keywords
boron
melt
alloy
der
der schmelze
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
EP02009964A
Other languages
German (de)
French (fr)
Other versions
EP1264903A2 (en
EP1264903B1 (en
Inventor
Ute Lohrey
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren 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
Priority claimed from DE10127753A external-priority patent/DE10127753A1/en
Priority claimed from DE2001157722 external-priority patent/DE10157722A1/en
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1264903A2 publication Critical patent/EP1264903A2/en
Publication of EP1264903A3 publication Critical patent/EP1264903A3/en
Application granted granted Critical
Publication of EP1264903B1 publication Critical patent/EP1264903B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • 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
    • 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
    • C22B21/062—Obtaining aluminium refining using salt or fluxing agents
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Das Verfahren zur Beseitigung von störenden Legierungsbestandteilen aus einer Aluminium-Gusslegierung weist folgende Schritte auf:

  • vollständiges Aufschmelzen der Aluminium-Gusslegierung,
  • Zumischen von Bor bis zu einem in der Schmelze verbleibenden Borgehalt von maximal 0,005 Gew.-%,
  • Verweilen der Schmelze bis zum Vergießen für eine zur Reaktion des Bors mit den störenden Legierungsbestandteilen erforderliche Mindestdauer und
  • Entfernen oder Zurückhalten entstandener Feststoffe aus der Schmelze vor oder während ihres Vergießens.
The method for removing interfering alloy constituents from an aluminum casting alloy comprises the following steps:
  • complete melting of the aluminum casting alloy,
  • Admixing of boron to a residual in the melt boron content of not more than 0.005 wt .-%,
  • Residence of the melt until it is cast for a minimum time required for the reaction of the boron with the interfering alloy constituents, and
  • Removal or retention of resulting solids from the melt before or during their casting.

EP20020009964 2001-06-07 2002-05-03 Refining of aluminium casting alloys by boron addition Expired - Lifetime EP1264903B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10127753 2001-06-07
DE10127753A DE10127753A1 (en) 2001-06-07 2001-06-07 Removing impurity alloying components from an aluminum cast alloy comprises completely melting the cast alloy, mixing with boron, casting the melt, and removing or retaining solids produced from the melt before or during casting
DE2001157722 DE10157722A1 (en) 2001-11-24 2001-11-24 Removing impurity alloying components from an aluminum cast alloy comprises completely melting the cast alloy, mixing with boron, casting the melt, and removing or retaining solids produced from the melt before or during casting
DE10157722 2001-11-24

Publications (3)

Publication Number Publication Date
EP1264903A2 EP1264903A2 (en) 2002-12-11
EP1264903A3 true EP1264903A3 (en) 2003-08-27
EP1264903B1 EP1264903B1 (en) 2006-09-20

Family

ID=26009486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020009964 Expired - Lifetime EP1264903B1 (en) 2001-06-07 2002-05-03 Refining of aluminium casting alloys by boron addition

Country Status (3)

Country Link
EP (1) EP1264903B1 (en)
DE (1) DE50208178D1 (en)
ES (1) ES2271139T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010060670A1 (en) * 2010-11-19 2012-05-24 Martinrea Honsel Germany Gmbh Cylinder head for combustion engines made of aluminum alloy
CN103572081A (en) * 2013-11-20 2014-02-12 江苏江旭铸造集团有限公司 Casting process of 7475 aluminium alloy slab ingot

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099948A1 (en) * 1982-07-28 1984-02-08 Showa Aluminum Corporation Process for producing high-purity aluminum
US4507150A (en) * 1982-11-16 1985-03-26 Alcan International Limited Removal of impurities from molten aluminium
DE3608713A1 (en) * 1985-03-25 1986-10-09 Cabot Corp., Boston, Mass. GRAIN IMPROVERS FOR ALUMINUM CONTAINING SILICON
EP0521580A1 (en) * 1991-07-05 1993-01-07 KBM-Metaalindustrie B.V. Process for the preparation of a grain refiner
JPH0885832A (en) * 1994-09-19 1996-04-02 Kobe Steel Ltd Method for melting aluminum or aluminum alloy
RU2084548C1 (en) * 1994-10-12 1997-07-20 Акционерное общество "Красноярский металлургический завод" Method of cleaning of aluminium and its alloys of heavy metal impurities

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099948A1 (en) * 1982-07-28 1984-02-08 Showa Aluminum Corporation Process for producing high-purity aluminum
US4507150A (en) * 1982-11-16 1985-03-26 Alcan International Limited Removal of impurities from molten aluminium
DE3608713A1 (en) * 1985-03-25 1986-10-09 Cabot Corp., Boston, Mass. GRAIN IMPROVERS FOR ALUMINUM CONTAINING SILICON
EP0521580A1 (en) * 1991-07-05 1993-01-07 KBM-Metaalindustrie B.V. Process for the preparation of a grain refiner
JPH0885832A (en) * 1994-09-19 1996-04-02 Kobe Steel Ltd Method for melting aluminum or aluminum alloy
RU2084548C1 (en) * 1994-10-12 1997-07-20 Акционерное общество "Красноярский металлургический завод" Method of cleaning of aluminium and its alloys of heavy metal impurities

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199623, Derwent World Patents Index; Class M25, AN 1996-225257, XP002246253 *
DATABASE WPI Section Ch Week 199811, Derwent World Patents Index; Class M25, AN 1998-119109, XP002246252 *

Also Published As

Publication number Publication date
EP1264903A2 (en) 2002-12-11
ES2271139T3 (en) 2007-04-16
EP1264903B1 (en) 2006-09-20
DE50208178D1 (en) 2006-11-02

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