DE844388C - Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys - Google Patents

Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys

Info

Publication number
DE844388C
DE844388C DEV2532A DEV0002532A DE844388C DE 844388 C DE844388 C DE 844388C DE V2532 A DEV2532 A DE V2532A DE V0002532 A DEV0002532 A DE V0002532A DE 844388 C DE844388 C DE 844388C
Authority
DE
Germany
Prior art keywords
aluminum
production
chemical process
gloss surfaces
alloys
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
DEV2532A
Other languages
German (de)
Inventor
Heinrich Neunzig
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 DEV2532A priority Critical patent/DE844388C/en
Application granted granted Critical
Publication of DE844388C publication Critical patent/DE844388C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F3/00—Brightening metals by chemical means
    • C23F3/02—Light metals
    • C23F3/03—Light metals with acidic solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Description

Chemisches Verfahren zur Erzeugung hochglänzender Oberflächen auf Aluminium und Aluminiumlegierungen Das Patent 835 821 hat ein Verfahren zur Erzeugung hochglänzender Oberflächen auf Aluminium, insbesondere Reinstal.uminium und dessen Legierungen zum Gegenstand, das dadurch gekenmzeic'hnet ist, daB .die Gegenstände mit Lösungen behandelt werden, die Wasserstoff-, Ammonium-, Nitrat- und Fluoridionen enthalten, wobei das Verhältnis der Fluoridionen zueinander so gewählt wird, daß sich Ammoniumbifluorid bilden kann. Es wurde festgestellt, daB man mit diesen Lösungen einen höheren Glänzeffekt erzielt, wenn man diesen Bleisalze in geringen Mengen zusetzt, vorzugsweise 0,05 bis 0,5 g Blei pro Liter Badlösung. Die Badlösung kann im übrigen einen Geha:lt an freier F1uBsäure oder an Ammoniumfluorid enthalten.Chemical process for producing high-gloss surfaces on aluminum and aluminum alloys. which contain hydrogen, ammonium, nitrate and fluoride ions, the ratio of the fluoride ions to one another being selected so that ammonium bifluoride can form. It has been found that these solutions achieve a higher gloss effect if small amounts of lead salts are added to them, preferably 0.05 to 0.5 g of lead per liter of bath solution. The bath solution can also contain a content of free acid or ammonium fluoride.

Beispiel Einer Lösung, die 13 Gewichtsprozent Salpetersäure und 16 Gewichtsprozent Ammonium@bifluorid enthält, werden o,o2 Gewichtsprozent Bleinitrat zugegeben. Die Gegenstände werden bei, angenähert 5o° C etwa 15 Sekunden lang in dieser Lösung behandelt, wodurch eine hochglänzende Oberfläche erzielt wird.Example of a solution containing 13 percent by weight nitric acid and 16 Weight percent ammonium @ bifluoride contains, o, o2 weight percent lead nitrate admitted. The objects are heated in at, approximately 50 ° C for about 15 seconds treated with this solution, whereby a high-gloss surface is achieved.

Claims (1)

PATENTANSPRUCII: Verfahren zur Erzeugung höchglänzender Oberflächen auf Gegenständen aus Aluminium, insbesondere Reinstaluminium oder dessen Legierungen, varzugswetse aus -solchen mit Magnesium, nach Patent 835 821, dadurch-gekennzeichnet, daß den angewandten Lösungen Bleisalze in geringen Mengen, vorzugsweise in solchen Mengen zugesetzt werden, da$ d-ie Lösungen 0,05 bis 0,5 g Blei im Liter enthalten.PATENT CLAIM: Process for producing high-gloss surfaces on objects made of aluminum, in particular pure aluminum or its alloys, varzugswetse made of -solchen with magnesium, according to Patent 835 821, characterized in that the solutions used are added lead salts in small amounts, preferably in such amounts, because the solutions contain 0.05 to 0.5 g lead per liter.
DEV2532A 1950-09-27 1950-09-27 Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys Expired DE844388C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV2532A DE844388C (en) 1950-09-27 1950-09-27 Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV2532A DE844388C (en) 1950-09-27 1950-09-27 Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys

Publications (1)

Publication Number Publication Date
DE844388C true DE844388C (en) 1953-04-27

Family

ID=7570100

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV2532A Expired DE844388C (en) 1950-09-27 1950-09-27 Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys

Country Status (1)

Country Link
DE (1) DE844388C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011247B (en) * 1954-12-23 1957-06-27 Vaw Ver Aluminium Werke Ag Solution and method for the production of glossy, especially high-gloss surfaces on aluminum or aluminum alloys
DE1061151B (en) * 1956-07-31 1959-07-09 Eisen & Stahlind Ag Process for pickling objects made of titanium
DE1266611B (en) * 1959-09-22 1968-04-18 Marijan Stalzer Dipl Ing Filling solution to maintain the optimal effectiveness of baths for glazing aluminum and its alloys

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011247B (en) * 1954-12-23 1957-06-27 Vaw Ver Aluminium Werke Ag Solution and method for the production of glossy, especially high-gloss surfaces on aluminum or aluminum alloys
DE1061151B (en) * 1956-07-31 1959-07-09 Eisen & Stahlind Ag Process for pickling objects made of titanium
DE1266611B (en) * 1959-09-22 1968-04-18 Marijan Stalzer Dipl Ing Filling solution to maintain the optimal effectiveness of baths for glazing aluminum and its alloys

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