EP0185192A3 - Process for the hard anodizing of aluminium cast parts produced by vacuum casting - Google Patents

Process for the hard anodizing of aluminium cast parts produced by vacuum casting Download PDF

Info

Publication number
EP0185192A3
EP0185192A3 EP85114290A EP85114290A EP0185192A3 EP 0185192 A3 EP0185192 A3 EP 0185192A3 EP 85114290 A EP85114290 A EP 85114290A EP 85114290 A EP85114290 A EP 85114290A EP 0185192 A3 EP0185192 A3 EP 0185192A3
Authority
EP
European Patent Office
Prior art keywords
parts produced
hard anodizing
vacuum casting
cast parts
aluminium cast
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
EP85114290A
Other languages
German (de)
Other versions
EP0185192A2 (en
EP0185192B1 (en
Inventor
Jochen Dr. Spriestersbach
Hans-Joachim Meier
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
Priority to AT85114290T priority Critical patent/ATE50604T1/en
Publication of EP0185192A2 publication Critical patent/EP0185192A2/en
Publication of EP0185192A3 publication Critical patent/EP0185192A3/en
Application granted granted Critical
Publication of EP0185192B1 publication Critical patent/EP0185192B1/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
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/16—Pretreatment, e.g. desmutting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrochemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Mold Materials And Core Materials (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

1. Process for hard anodizing of cast aluminium parts produced in the vacuum die-casting process, with a silicon content of more than 5% as well as a strontium content of 0.005 to 0.08% and/or a sodium content of 0.003 to 0.2%, characterized in that the castings are subjected before the anodizing, which is carried out by the direct current sulphuric acid or direct current sulphuric acid oxalic acid process, to an annealing at temperatures of 400 to 480 degrees C for a period of 3 to 20 minutes.
EP85114290A 1984-11-22 1985-11-09 Process for the hard anodizing of aluminium cast parts produced by vacuum casting Expired - Lifetime EP0185192B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114290T ATE50604T1 (en) 1984-11-22 1985-11-09 PROCESS FOR HARD ANODIZATION OF ALUMINUM CASTINGS MANUFACTURED BY VACUUM DIE CASTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3442591 1984-11-22
DE19843442591 DE3442591A1 (en) 1984-11-22 1984-11-22 METHOD FOR HARDANODIZING ALUMINUM CASTING PARTS PRODUCED IN VACUUM CASTING

Publications (3)

Publication Number Publication Date
EP0185192A2 EP0185192A2 (en) 1986-06-25
EP0185192A3 true EP0185192A3 (en) 1987-02-25
EP0185192B1 EP0185192B1 (en) 1990-02-28

Family

ID=6250880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114290A Expired - Lifetime EP0185192B1 (en) 1984-11-22 1985-11-09 Process for the hard anodizing of aluminium cast parts produced by vacuum casting

Country Status (3)

Country Link
EP (1) EP0185192B1 (en)
AT (1) ATE50604T1 (en)
DE (2) DE3442591A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040059A (en) * 1997-11-18 2000-03-21 Luk Gmbh & Co. Component made of an aluminium silicon cast alloy
AU2001219047A1 (en) * 2000-09-18 2002-03-26 Nikolai Alexandrovich Belov Construction material based on aluminium and method for producing parts from said material
EP2096187A1 (en) * 2008-02-28 2009-09-02 Georg Fischer Engineering AG Method for simultaneous tempering and coating an aluminium component and component manufactured according to this method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191116B (en) * 1959-09-02 1965-04-15 Ver Deutsche Metallwerke Ag Process for achieving a uniform gray coloration of a certain adjustable shade of gray on hardenable aluminum alloys
GB1121677A (en) * 1964-12-02 1968-07-31 Pechiney Prod Chimiques Sa Production of coloured aluminium-silicon alloys
DE3518408A1 (en) * 1984-05-25 1985-11-28 Sumitomo Light Metal Industries Ltd., Tokio/Tokyo ALUMINUM HARD SOLDER AND ITS USE IN ALUMINUM HEAT EXCHANGERS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013079B2 (en) * 1978-01-31 1985-04-04 松下電器産業株式会社 Surface treatment method for aluminum foil
DE3244217A1 (en) * 1982-11-30 1984-05-30 Electro Chemical Engineering Gmbh, Zug METHOD FOR ANODICALLY OXYDATING ALUMINUM ALLOYS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191116B (en) * 1959-09-02 1965-04-15 Ver Deutsche Metallwerke Ag Process for achieving a uniform gray coloration of a certain adjustable shade of gray on hardenable aluminum alloys
GB1121677A (en) * 1964-12-02 1968-07-31 Pechiney Prod Chimiques Sa Production of coloured aluminium-silicon alloys
DE3518408A1 (en) * 1984-05-25 1985-11-28 Sumitomo Light Metal Industries Ltd., Tokio/Tokyo ALUMINUM HARD SOLDER AND ITS USE IN ALUMINUM HEAT EXCHANGERS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
METAL FINISHING ABSTRACTS, Band 22, Nr. 4, Juli/August 1980, Seiten 268-269; & JP-A-54 102 251 (MATSUSHITA) 31.01.1978 *

Also Published As

Publication number Publication date
DE3442591A1 (en) 1986-05-22
EP0185192A2 (en) 1986-06-25
DE3576176D1 (en) 1990-04-05
DE3442591C2 (en) 1993-07-15
EP0185192B1 (en) 1990-02-28
ATE50604T1 (en) 1990-03-15

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