EP0030060B1 - Procédé et dispositif d'automatisation d'un cycle de dégazage sous vide d'alliages d'aluminium - Google Patents

Procédé et dispositif d'automatisation d'un cycle de dégazage sous vide d'alliages d'aluminium Download PDF

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Publication number
EP0030060B1
EP0030060B1 EP80201114A EP80201114A EP0030060B1 EP 0030060 B1 EP0030060 B1 EP 0030060B1 EP 80201114 A EP80201114 A EP 80201114A EP 80201114 A EP80201114 A EP 80201114A EP 0030060 B1 EP0030060 B1 EP 0030060B1
Authority
EP
European Patent Office
Prior art keywords
alloy
partial pressure
degassing
degasification
vacuum
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.)
Expired
Application number
EP80201114A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0030060A1 (fr
Inventor
Pierre L. Merrien
Pierre A. Merrien
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.)
Etude Et Developpement En Metallurgie Edem So
Original Assignee
Etude Et Developpement En Metallurgie Edem A Responsabilite Dite Ltee Ste
Etude Et Developpement En Metallurgie Edem A Responsabilite Dite Ltee Ste
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 Etude Et Developpement En Metallurgie Edem A Responsabilite Dite Ltee Ste, Etude Et Developpement En Metallurgie Edem A Responsabilite Dite Ltee Ste filed Critical Etude Et Developpement En Metallurgie Edem A Responsabilite Dite Ltee Ste
Priority to AT80201114T priority Critical patent/ATE28481T1/de
Publication of EP0030060A1 publication Critical patent/EP0030060A1/fr
Application granted granted Critical
Publication of EP0030060B1 publication Critical patent/EP0030060B1/fr
Expired legal-status Critical Current

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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
    • C22B21/068—Obtaining aluminium refining handling in vacuum

Definitions

  • the present invention relates to vacuum degassing of aluminum alloys and its regulation.
  • the first bubble method is used, which only applies at the start of degassing because then the bubbles are released under an oxide plane and can no longer be observed. This process therefore consists in observing a posteriori that the degassing operation has ended and does not allow this operation to be directed according to its measured evolution.
  • the device for implementing the above method comprises a sealed oven, a crucible containing the degassing alloy and a source of vacuum, and is characterized in that it further comprises a pilot regulating an interposed valve between the vacuum source and the sealed oven containing the crucible with the alloy to be degassed, a hydrogen metering electrode immersed in the alloy and connected to a partial hydrogen pressure recorder itself connected to the pilot, pilot comprising an input-output assembly allowing the introduction of the values of the parameters, a computer assembly, and a memory assembly where the values of the corresponding parameters of the optimal curves are stored.
  • Figure 1 showing the degassing diagram according to the invention
  • Figure 2 illustrating an embodiment of the invention
  • Figure 3 illustrating the principle of regulation
  • Figure 4 showing a stepped plate.
  • This phenomenon would also cause the disappearance of the sodium introduced to ensure the modification of the shape of the silicon of the alloy in the case of silicon alloys.
  • the pilot can receive his information from several vacuum furnaces and regulate it like the first from the automated valves 24, 25, etc.
  • the enclosure is provided with a glass cover 28 through which the solidification can be followed.
  • the plaque is examined by radiography. A satisfactory metal must lead with an AS7606 alloy for example to microporosities: a possible degradation of the modification of the silicon which should only appear in the 20 mm step.
  • the mechanical characteristics of the different steps are also compared to the profiles of the curves. The optimal curves to be stored for the different alloys can be determined for example by these tests.
  • the furnace can be supplied with metal from the melting furnace by pump, electromagnetic for example. Likewise for the evacuation of the metal after degassing under vacuum, for example to the crucible of a low-pressure machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP80201114A 1979-11-28 1980-11-19 Procédé et dispositif d'automatisation d'un cycle de dégazage sous vide d'alliages d'aluminium Expired EP0030060B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80201114T ATE28481T1 (de) 1979-11-28 1980-11-19 Verfahren und vorrichtung zur automatisierung eines vakuumentgasungsverfahrens bei aluminiumlegierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7929226A FR2472615A1 (fr) 1979-11-28 1979-11-28 Procede et dispositif d'automatisation d'un cycle de degazage sous vide d'alliages d'aluminium
FR7929226 1979-11-28

Publications (2)

Publication Number Publication Date
EP0030060A1 EP0030060A1 (fr) 1981-06-10
EP0030060B1 true EP0030060B1 (fr) 1987-07-22

Family

ID=9232158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80201114A Expired EP0030060B1 (fr) 1979-11-28 1980-11-19 Procédé et dispositif d'automatisation d'un cycle de dégazage sous vide d'alliages d'aluminium

Country Status (9)

Country Link
US (1) US4427443A (enExample)
EP (1) EP0030060B1 (enExample)
JP (1) JPS56102532A (enExample)
AT (1) ATE28481T1 (enExample)
BR (1) BR8007812A (enExample)
CA (1) CA1182647A (enExample)
DE (1) DE3071995D1 (enExample)
ES (1) ES497192A0 (enExample)
FR (1) FR2472615A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1041900C (zh) * 1994-10-20 1999-02-03 邱表来 一种生产高强抗震铸铝件的真空挤压及热处理的方法
US5917114A (en) * 1996-11-01 1999-06-29 The Ohio State University Degassing of liquid aluminum and other metals
JP4749816B2 (ja) * 2005-09-28 2011-08-17 三菱アルミニウム株式会社 高純度アルミニウムスラブの製造方法
CN117655355A (zh) * 2023-12-05 2024-03-08 南昌航空大学 一种提高选区激光熔化铝合金焊接和修复致密度的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE311051B (enExample) 1964-02-05 1969-05-27 Asea Ab
US3635696A (en) 1968-05-21 1972-01-18 Finkl & Sons Co Treatment of molten metal using arc heat and vacuum
US3594155A (en) 1968-10-30 1971-07-20 Allegheny Ludlum Steel Method for dynamically controlling decarburization of steel
US3700429A (en) 1970-01-05 1972-10-24 Allegheny Ludlum Steel Method of controlling vacuum decarburization
US3958981A (en) 1975-04-16 1976-05-25 Southwire Company Process for degassing aluminum and aluminum alloys
FR2312569A1 (fr) 1975-05-27 1976-12-24 Activite Atom Avance Perfectionnement aux installations de traitement d'un metal fondu

Also Published As

Publication number Publication date
FR2472615B1 (enExample) 1982-01-22
FR2472615A1 (fr) 1981-07-03
CA1182647A (fr) 1985-02-19
BR8007812A (pt) 1981-06-16
ATE28481T1 (de) 1987-08-15
ES8107325A1 (es) 1981-10-01
ES497192A0 (es) 1981-10-01
US4427443A (en) 1984-01-24
JPS56102532A (en) 1981-08-17
EP0030060A1 (fr) 1981-06-10
JPH0224899B2 (enExample) 1990-05-31
DE3071995D1 (en) 1987-08-27

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