EP0275774A3 - Process for preparing chromium-aluminium agglomerates for adding chromium to a melt of aluminium - Google Patents

Process for preparing chromium-aluminium agglomerates for adding chromium to a melt of aluminium Download PDF

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Publication number
EP0275774A3
EP0275774A3 EP87402937A EP87402937A EP0275774A3 EP 0275774 A3 EP0275774 A3 EP 0275774A3 EP 87402937 A EP87402937 A EP 87402937A EP 87402937 A EP87402937 A EP 87402937A EP 0275774 A3 EP0275774 A3 EP 0275774A3
Authority
EP
European Patent Office
Prior art keywords
chromium
aluminum
balls
alloy
aluminium
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
EP87402937A
Other languages
French (fr)
Other versions
EP0275774B1 (en
EP0275774A2 (en
Inventor
Alain Defrance
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.)
Delachaux SA
Original Assignee
Delachaux 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 Delachaux SA filed Critical Delachaux SA
Priority to AT87402937T priority Critical patent/ATE64762T1/en
Publication of EP0275774A2 publication Critical patent/EP0275774A2/en
Publication of EP0275774A3 publication Critical patent/EP0275774A3/en
Application granted granted Critical
Publication of EP0275774B1 publication Critical patent/EP0275774B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The present invention relates to a process for the production of chromium-aluminum balls for adding chromium into molten aluminum baths. In order to obtain balls containing x% of chromium and y% of aluminum, where x and y are gravimetric contents corresponding to the following relationships: 70</=x</=80 20</=y</=30 x+y=100 an alloy of chromium and aluminum containing gravimetric chromium and aluminum contents approximating to x by an excess and to y by a deficit respectively is prepared by melting and this alloy is then finely ground into a crude powder; the chromium and aluminum contents of the alloy or of the crude powder are determined and, if required, an additional amount of finely divided aluminum is added so as to obtain a powder containing x% of chromium and y% of aluminum, the additional amount of finely divided aluminum corresponding to less than 10% by weight of the crude powder; a compacting is then carried out. Balls essentially consisting of alloy particles having the same melting point and little risk of floating on the surface of the molten aluminum bath, which favors the dissolution of the balls in the latter, are produced.
EP87402937A 1986-12-22 1987-12-21 Process for preparing chromium-aluminium agglomerates for adding chromium to a melt of aluminium Expired - Lifetime EP0275774B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402937T ATE64762T1 (en) 1986-12-22 1987-12-21 PROCESS FOR THE MANUFACTURE OF CHROMIUM ALUMINUM BALLS AS CHROMIUM ADDITIVES TO ALUMINUM MELT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8617981A FR2608478B1 (en) 1986-12-22 1986-12-22 PROCESS FOR PRODUCING CHROME-ALUMINUM BALLS FOR THE ADDITION OF CHROME IN MOLTEN ALUMINUM BATHS
FR8617981 1986-12-22

Publications (3)

Publication Number Publication Date
EP0275774A2 EP0275774A2 (en) 1988-07-27
EP0275774A3 true EP0275774A3 (en) 1988-08-03
EP0275774B1 EP0275774B1 (en) 1991-06-26

Family

ID=9342163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402937A Expired - Lifetime EP0275774B1 (en) 1986-12-22 1987-12-21 Process for preparing chromium-aluminium agglomerates for adding chromium to a melt of aluminium

Country Status (5)

Country Link
US (1) US4820483A (en)
EP (1) EP0275774B1 (en)
AT (1) ATE64762T1 (en)
DE (1) DE3771059D1 (en)
FR (1) FR2608478B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316723A (en) * 1992-07-23 1994-05-31 Reading Alloys, Inc. Master alloys for beta 21S titanium-based alloys
GB2299099A (en) * 1995-03-18 1996-09-25 Christopher Duncan Mayes Process for producing grain refining master alloys.
ATE286990T1 (en) * 1999-04-15 2005-01-15 Bostlan Sa ADDITIVE FOR ADDING METALS TO ALUMINUM ALLOYS

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592637A (en) * 1968-02-26 1971-07-13 Union Carbide Corp Method for adding metal to molten metal baths
US4104059A (en) * 1977-05-27 1978-08-01 Reading Alloys, Inc. Molybdenum-titanium-zirconium-aluminum master alloys
WO1984000050A1 (en) * 1982-06-17 1984-01-05 Pechiney Aluminium Motor cylinder sleeves based on aluminum alloys and calibrated silicon grains and methods for obtaining them
EP0102892A1 (en) * 1982-08-20 1984-03-14 C. Delachaux Process for manufacturing high purity metals and alloys
EP0229499A1 (en) * 1985-12-16 1987-07-22 Inco Alloys International, Inc. Formation of intermetallic and intermetallic-type precursor alloys for subsequent mechanical alloying applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1005220A (en) * 1974-02-25 1977-02-15 National Research Council Of Canada Method for producing ball agglomerated particulate material
GB2112020B (en) * 1981-12-23 1985-07-03 London And Scandinavian Metall Introducing one or more metals into a melt comprising aluminium
US4689199A (en) * 1984-09-27 1987-08-25 Aluminum Company Of America Process for adding material to molten media

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592637A (en) * 1968-02-26 1971-07-13 Union Carbide Corp Method for adding metal to molten metal baths
US4104059A (en) * 1977-05-27 1978-08-01 Reading Alloys, Inc. Molybdenum-titanium-zirconium-aluminum master alloys
WO1984000050A1 (en) * 1982-06-17 1984-01-05 Pechiney Aluminium Motor cylinder sleeves based on aluminum alloys and calibrated silicon grains and methods for obtaining them
EP0102892A1 (en) * 1982-08-20 1984-03-14 C. Delachaux Process for manufacturing high purity metals and alloys
EP0229499A1 (en) * 1985-12-16 1987-07-22 Inco Alloys International, Inc. Formation of intermetallic and intermetallic-type precursor alloys for subsequent mechanical alloying applications

Also Published As

Publication number Publication date
EP0275774B1 (en) 1991-06-26
US4820483A (en) 1989-04-11
FR2608478A1 (en) 1988-06-24
DE3771059D1 (en) 1991-08-01
ATE64762T1 (en) 1991-07-15
FR2608478B1 (en) 1989-06-02
EP0275774A2 (en) 1988-07-27

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