FR2043765A1 - Electrolytic polishing of aluminium strip - and sheer - Google Patents

Electrolytic polishing of aluminium strip - and sheer

Info

Publication number
FR2043765A1
FR2043765A1 FR7018344A FR7018344A FR2043765A1 FR 2043765 A1 FR2043765 A1 FR 2043765A1 FR 7018344 A FR7018344 A FR 7018344A FR 7018344 A FR7018344 A FR 7018344A FR 2043765 A1 FR2043765 A1 FR 2043765A1
Authority
FR
France
Prior art keywords
pref
esp
cathode
edge
sheer
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.)
Withdrawn
Application number
FR7018344A
Other languages
French (fr)
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
Publication of FR2043765A1 publication Critical patent/FR2043765A1/en
Withdrawn legal-status Critical Current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
    • C25F3/02—Etching
    • C25F3/04—Etching of light metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • B23H3/08—Working media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/02—Trimming or deburring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrolytic Production Of Metals (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Al bands or sheets, esp. for coil windings e.g. for transformers, are rounded off electrochemically (to facilitate insulation) using an electrolyte composed of:- Ca 20-50 g/l. alkaline nitrate or pref. NH4NO3; 5-50g/l. complexing agent of the amino-acetic acid and hexose derivative group, esp. glycine, EDTA- salts or sodium gluconate; 5-50 g/l inhibitor, e.g. dextrin, urotropine, gun arabic, gelatine, agar - agar etc., and water; pH 4, pref. 3. There is an external source of continuous current, 0.1-10A/cm edge. The cathode pref. surrounds the edge, the anode and cathode are only a few mm. apart. Treatment last 1-30 secs.
FR7018344A 1969-05-29 1970-05-20 Electrolytic polishing of aluminium strip - and sheer Withdrawn FR2043765A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691927216 DE1927216A1 (en) 1969-05-29 1969-05-29 Electrolyte and process for electrochemical deburring and rounding of aluminum strips or foils

Publications (1)

Publication Number Publication Date
FR2043765A1 true FR2043765A1 (en) 1971-02-19

Family

ID=5735428

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7018344A Withdrawn FR2043765A1 (en) 1969-05-29 1970-05-20 Electrolytic polishing of aluminium strip - and sheer

Country Status (5)

Country Link
BE (1) BE750926A (en)
DE (1) DE1927216A1 (en)
FR (1) FR2043765A1 (en)
LU (1) LU60907A1 (en)
NL (1) NL7007596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007085062A1 (en) * 2006-01-27 2007-08-02 Zijad Cehic Production of perforated aluminium (in the form of sheet or foil) hard- or soft-rolled

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007085062A1 (en) * 2006-01-27 2007-08-02 Zijad Cehic Production of perforated aluminium (in the form of sheet or foil) hard- or soft-rolled

Also Published As

Publication number Publication date
BE750926A (en) 1970-11-03
DE1927216A1 (en) 1970-12-03
NL7007596A (en) 1970-12-01
LU60907A1 (en) 1970-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse