FR2252901A1 - Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte - Google Patents

Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte

Info

Publication number
FR2252901A1
FR2252901A1 FR7343116A FR7343116A FR2252901A1 FR 2252901 A1 FR2252901 A1 FR 2252901A1 FR 7343116 A FR7343116 A FR 7343116A FR 7343116 A FR7343116 A FR 7343116A FR 2252901 A1 FR2252901 A1 FR 2252901A1
Authority
FR
France
Prior art keywords
workpiece
electrolyte
potential
jet
increased
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
FR7343116A
Other languages
French (fr)
Other versions
FR2252901B1 (en
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Priority to FR7343116A priority Critical patent/FR2252901A1/en
Publication of FR2252901A1 publication Critical patent/FR2252901A1/en
Application granted granted Critical
Publication of FR2252901B1 publication Critical patent/FR2252901B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B23H9/14—Making holes
    • B23H9/16—Making holes using an electrolytic jet

Abstract

Holes are drilled in a metal workpiece electrochemically by impinging a jet of cathodically charged electrolyte against a starting surface of the workpiece which is anodically charged. A low potential is maintained until a dimple is formed in the workpiece which will direct the electrolyte away from the workpiece. The potential is increased as cavitation increases and maintained to cause drilling at the point of jet impingement until the hole is formed. The potential is again increased for a period to develop the hole to a desired diameter. Pref, the potential is increased in increments and the nozzle forming the electrolyte jet is positioned below the workpiece at a distance to facilitate electrolyte drainage. A plurality of nozzles are utilised for providing multiple cavities simultaneously.
FR7343116A 1973-12-04 1973-12-04 Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte Granted FR2252901A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7343116A FR2252901A1 (en) 1973-12-04 1973-12-04 Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7343116A FR2252901A1 (en) 1973-12-04 1973-12-04 Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte

Publications (2)

Publication Number Publication Date
FR2252901A1 true FR2252901A1 (en) 1975-06-27
FR2252901B1 FR2252901B1 (en) 1980-03-14

Family

ID=9128655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7343116A Granted FR2252901A1 (en) 1973-12-04 1973-12-04 Electrochemical machining metal - using non-conductive inert nozzles and cathodically charged electrolyte

Country Status (1)

Country Link
FR (1) FR2252901A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344372A1 (en) * 1976-03-15 1977-10-14 Trw Inc Electrochemical drilling power supply - utilising a negative DC with superimposed negative pulses connected to the electrolyte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344372A1 (en) * 1976-03-15 1977-10-14 Trw Inc Electrochemical drilling power supply - utilising a negative DC with superimposed negative pulses connected to the electrolyte

Also Published As

Publication number Publication date
FR2252901B1 (en) 1980-03-14

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse