DE847389C - Process for chemical or electrolytic polishing of metal objects - Google Patents

Process for chemical or electrolytic polishing of metal objects

Info

Publication number
DE847389C
DE847389C DEV270A DEV0000270A DE847389C DE 847389 C DE847389 C DE 847389C DE V270 A DEV270 A DE V270A DE V0000270 A DEV0000270 A DE V0000270A DE 847389 C DE847389 C DE 847389C
Authority
DE
Germany
Prior art keywords
temperature
objects
walled parts
thick
chemical
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
DEV270A
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 DEV270A priority Critical patent/DE847389C/en
Application granted granted Critical
Publication of DE847389C publication Critical patent/DE847389C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Description

Verfahren zum chemischen oder elektrolytischen Polieren von Metallgegenständen ]),ein, clieinischen oder elektrolytischen Polieren von Gegenständen aus Aluminiumoder AluminiumlegierLitigen h:itigt die Art des Angriffs stark von der Tetnherattir ab. Die gewünschte Glänzwirkung erhält niaii incist mir in einem ziemlich schmalen Temperaturbereich, auf deit die Bäder eingestellt werde». Hierbei ist zti beachten, daß einmal die leint Angriff stattfindende chemische Reaktion exothcrin @c rl:iuft und daß andererseits die eingebrachteit Gegenstände eine gewisse Wärmekapazität auf-\ccisen, die die Einstellung der gewünschten Temperatur becinflu#set@.Process for chemical or electrolytic polishing of metal objects ]), a, clinical or electrolytic polishing of objects made of aluminum or Aluminum alloy ligands greatly depend on the type of attack on the tetnherattir. The desired gloss effect is obtained niaii incist me in a fairly narrow temperature range, until the baths will be closed ». Here is zti note that once the leint chemical reaction taking place exothcrin @c rl: iuft and that on the other hand the objects introduced have a certain heat capacity, which the Setting the desired temperature becinflu # set @.

Ertitldtingsgeinäß \\-ird die Temperatur der l iegenstände \ or der Behandlung ungefähr der Temperatur des Bades angepaßt. Da Werkstücke verschiedener Wandstärke infolge der exothermen Reaktion bei dem Glänzverfahren eine verschiedene Erwärmung erfahren, kann es vorteilhaft sein, die Gegenstände ihrer Wandstärke entsprechend verschieden hoch vorzuwärmen, d. h. dickwandige Gegenstände sollen höher vorgewärmt werden als dünnwandige. Sind dickwandige und dünnwandige Teile gleichzeitig oder an ein und demselben Werkstück vorhanden, so kann die verschiedenartige Vorwärmung der einzelnen Teile des Werkstücks dadurch erreicht werden, daß das gesamte Werkstück oder die verschiedenen Werktücke zunächst auf eine höhere Temperatur als die Badtemperattir gebracht und sodann durch kurzes Eintaticheii in kaltes Wasser oder durch einen kalten Luftstrom teilweise wieder abgekühlt werden. Dabei kühlen sich die dünnwandigeren Teile stärker ab als die dickwandigen, wodurch die gewünschte Temperaturverteilung erreicht wird.Ertitldtingsgeinäß \\ - is the temperature of the beds \ or the Treatment adjusted approximately to the temperature of the bath. Since workpieces of different The wall thickness is different due to the exothermic reaction in the polishing process Experienced warming, it can be advantageous to adjust the objects according to their wall thickness preheat at different levels, d. H. thick-walled objects should be preheated higher are called thin-walled. Are thick-walled and thin-walled parts at the same time or present on one and the same workpiece, the different types of preheating of the individual parts of the workpiece can be achieved in that the entire workpiece or the various pieces of work to a higher temperature than the bath temperature and then by briefly soaking in cold water or by a cold Air flow can be partially cooled again. The thinner-walled ones cool down in the process Part more than the thick-walled ones, creating the desired temperature distribution is achieved.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zum chemischen oder elektrolytischen Polieren von Metallgegenständen, dadurch gekennzeichnet, daß die Gegenstände vor dem Eintauchen in das Polierbad vorgewärmt werden. z. Verfahren nach Anspruch i, dadurch gükennzeichnet, daß die Temperatur starkwandigerer Teile vor dem Eintauchen in das Polierbad derTemperatur des Bades angeglichen wird. 3. Verfahren nach Anspruch i, dadui-c'i gekennzeichnet, daß verschieden starkwandige Teile verschieden hoch angewärmt werden, wobei die Temperatur der starkwandigeren Teile höher sein soll als die der dünnwandigeren Teile. q.. Verfahren nach Anspruch i und 3 zur B handlung von Gegenständen mit verschiedene Wandstärke, dadurch gekennzeichnet, daß die Gegenstände vor der Behandlung auf eine Temperatur oberhalb der des Behandlungshades vorgewärmt werden und sodairn durch kurzes Eintauchen in eine Kühlflüssigkeit oder durch einen kalten Luftstrom abgekühlt werden, so, claß starkwandigere Teile eine höhere Temperatur behalten als diinnwandigere. PATENT CLAIMS: i. Process for chemical or electrolytic polishing of metal objects, characterized in that the objects are preheated before being immersed in the polishing bath. z. Method according to Claim i, characterized in that the temperature of thick-walled parts is brought into line with the temperature of the bath before they are immersed in the polishing bath. 3. The method according to claim i, dadui-c'i, that different thick-walled parts are heated to different levels, the temperature of the thick-walled parts should be higher than that of the thinner-walled parts. q .. Method according to claim i and 3 for the treatment of objects with different wall thicknesses, characterized in that the objects are preheated to a temperature above that of the treatment before treatment and then cooled by brief immersion in a cooling liquid or by a cold air stream so, thick-walled parts will retain a higher temperature than thinner-walled parts.
DEV270A 1949-12-20 1949-12-20 Process for chemical or electrolytic polishing of metal objects Expired DE847389C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV270A DE847389C (en) 1949-12-20 1949-12-20 Process for chemical or electrolytic polishing of metal objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV270A DE847389C (en) 1949-12-20 1949-12-20 Process for chemical or electrolytic polishing of metal objects

Publications (1)

Publication Number Publication Date
DE847389C true DE847389C (en) 1953-03-26

Family

ID=7569003

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV270A Expired DE847389C (en) 1949-12-20 1949-12-20 Process for chemical or electrolytic polishing of metal objects

Country Status (1)

Country Link
DE (1) DE847389C (en)

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