EP3045567B1 - Methode pour la fabrication et le décapage des barres en aluminium - Google Patents

Methode pour la fabrication et le décapage des barres en aluminium Download PDF

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Publication number
EP3045567B1
EP3045567B1 EP16151146.4A EP16151146A EP3045567B1 EP 3045567 B1 EP3045567 B1 EP 3045567B1 EP 16151146 A EP16151146 A EP 16151146A EP 3045567 B1 EP3045567 B1 EP 3045567B1
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EP
European Patent Office
Prior art keywords
bar
pickling
solution
treatment
plant
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.)
Active
Application number
EP16151146.4A
Other languages
German (de)
English (en)
Other versions
EP3045567A1 (fr
Inventor
Massimo FESTA
Alessandro PALMANO
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.)
Eural Gnutti SpA
Original Assignee
Eural Gnutti SpA
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Publication date
Application filed by Eural Gnutti SpA filed Critical Eural Gnutti SpA
Publication of EP3045567A1 publication Critical patent/EP3045567A1/fr
Application granted granted Critical
Publication of EP3045567B1 publication Critical patent/EP3045567B1/fr
Active legal-status Critical Current
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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12Light metals
    • C23G1/125Light metals aluminium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/02Removing or drawing-off work
    • B21C35/023Work treatment directly following extrusion, e.g. further deformation or surface treatment
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00Apparatus for cleaning or pickling metallic material
    • C23G3/02Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/021Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00Apparatus for cleaning or pickling metallic material
    • C23G3/02Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/023Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00Apparatus for cleaning or pickling metallic material
    • C23G3/02Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/027Associated apparatus, e.g. for pretreating or after-treating
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00Apparatus for cleaning or pickling metallic material
    • C23G3/02Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/027Associated apparatus, e.g. for pretreating or after-treating
    • C23G3/028Associated apparatus, e.g. for pretreating or after-treating for thermal or mechanical pretreatment

Definitions

  • the present invention relates to a method for the production of aluminium or aluminium alloy bars.
  • the pickling takes place in subsequent stages: for example, a first stage of washing with soda is followed by rinsing in water, then further washing in acid and further rinsing in water.
  • the heating furnace is suitable to heat the semi-finished product 4a up to a predefined temperature, generally comprised between 200 - 650°C; a heated billet 4b comes out of the furnace 2.
  • a plant 100 comprises a heating furnace 102 supplied with the semi-finished starting product 4a; the heating furnace 102 is suitable to heat the semi-finished product 4a up to a predefined temperature, generally comprised between 200-650°C; a heated billet 4b comes out of the furnace 102.
  • the plant 100 comprises a main tank 108, downstream of the press 106 and the solution heat treatment furnace 105, and movement means 110, for example a conveyor belt, suitable to move the annealed bar 4f from the solution heat treatment furnace 105 inside the main tank 108.
  • movement means 110 for example a conveyor belt, suitable to move the annealed bar 4f from the solution heat treatment furnace 105 inside the main tank 108.
  • the plant comprises a closed circuit, which the main tank is part of, for the recirculation and topping up of the solution.
  • the system comprises an open circuit, which the main tank is part of, for the drainage of the solution outside the plant, for example in a purifier.
  • the appropriate solution for performing the simultaneous hardening and pickling or pickling only comprises water and a predefined amount of an organic acid.
  • the organic acid is selected from the group comprising citric acid and tartaric acid or combinations thereof.
  • both the bar and the solution are sufficiently “hot”.

Claims (7)

  1. Méthode pour la production d'une barre en aluminium ou en alliage d'aluminium, dans laquelle une barre extrudée (4e) subit un traitement thermique de mise en solution dans un four de traitement thermique de mise en solution (105), ce traitement chauffe la barre jusqu'à une température entre 350 et 600 °C ;
    dans laquelle un traitement de décapage et/ou de nettoyage de la barre, après un traitement thermique de mise en solution (4f), est alors réalisé en utilisant une solution d'eau et d'acide citrique ou d'eau et d'acide tartrique ou des combinaisons de ceux-ci, ayant atteint un état d'activation du procédé de décapage ;
    dans laquelle à la fois le traitement de décapage et un traitement de durcissement de la barre, après un traitement thermique de mise en solution (4f), sont réalisés simultanément.
  2. Méthode selon la revendication 1, dans laquelle la barre est durcie directement après un usinage par une presse (6).
  3. Méthode selon l'une quelconque des revendications 1 à 2, comprenant un traitement de vieillissement effectué sur la barre durcie et décapée.
  4. Méthode selon l'une quelconque des revendications précédentes, dans laquelle le traitement de décapage est réalisé par immersion dans une cuve principale (8, 108, 208) contenant la solution.
  5. Méthode selon l'une quelconque des revendications 1 à 3, dans laquelle le traitement de décapage a lieu en utilisant des moyens gicleurs (308) qui frappent la barre avec la solution.
  6. Méthode selon l'une quelconque des revendications précédentes, dans laquelle le traitement de décapage a lieu dans un circuit fermé pour la recirculation de la solution.
  7. Méthode selon l'une quelconque des revendications 1 à 5, dans laquelle le traitement de décapage a lieu dans un circuit ouvert pour le déversement de la solution.
EP16151146.4A 2015-01-16 2016-01-13 Methode pour la fabrication et le décapage des barres en aluminium Active EP3045567B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBS20150005 2015-01-16

Publications (2)

Publication Number Publication Date
EP3045567A1 EP3045567A1 (fr) 2016-07-20
EP3045567B1 true EP3045567B1 (fr) 2022-08-31

Family

ID=52597056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16151146.4A Active EP3045567B1 (fr) 2015-01-16 2016-01-13 Methode pour la fabrication et le décapage des barres en aluminium

Country Status (1)

Country Link
EP (1) EP3045567B1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10123736A (ja) * 1996-10-23 1998-05-15 Mitsubishi Chem Corp 電子写真感光体の製造方法
US5909742A (en) * 1993-03-26 1999-06-08 Betzdearborn Inc. Metal cleaning method
EP2369020A1 (fr) * 2010-03-16 2011-09-28 Z.A.T. Zinc Anticorosion Technologies SA Procédé de traitement d'un élément métallique pour une automobile

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1427043A (fr) * 1964-12-02 1966-02-04 Pechiney Prod Chimiques Sa Procédé d'obtention de coloration spéciale des alliages d'aluminium-silicium
NL154561B (nl) * 1965-04-27 1977-09-15 Lancy Lab Werkwijze voor het verwijderen van koper(i)oxyde en koper(ii)oxyde van een voorwerp met een oppervlak van koper of een koperlegering, werkwijze voor het bereiden van een hiervoor toe te passen beitsvloeistof en de door toepassing van deze beitswerkwijze verkregen voorwerpen.
BE790448A (fr) * 1971-01-13 1973-02-15 Southwire Co Dispositif de refroidissement pour train de
GB1394694A (en) * 1971-10-28 1975-05-21 Montedison Spa Lead acid accumulator or storage battery with supporting and/or connecting parts made of lihgt alloys
CH569533A5 (fr) * 1974-05-20 1975-11-28 Leichtmetall Gmbh
CN201419234Y (zh) * 2009-05-19 2010-03-10 贾国荣 一种上引法无氧铝杆连铸生产线
CN101767124B (zh) * 2009-12-23 2011-09-07 台山市金桥铝型材厂有限公司 一种铝材刷棒装置
CN202398636U (zh) * 2012-04-28 2012-08-29 天津市津和双金属线材有限公司 一种铝杆乳化液清洗装置
CN203754788U (zh) * 2014-03-27 2014-08-06 湖南创元铝业有限公司 圆铝杆的清洗和冷却装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909742A (en) * 1993-03-26 1999-06-08 Betzdearborn Inc. Metal cleaning method
JPH10123736A (ja) * 1996-10-23 1998-05-15 Mitsubishi Chem Corp 電子写真感光体の製造方法
EP2369020A1 (fr) * 2010-03-16 2011-09-28 Z.A.T. Zinc Anticorosion Technologies SA Procédé de traitement d'un élément métallique pour une automobile

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