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 (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18)

Introduced: January 1985

Description

B23H covers electrochemical and electrical discharge machining processes where a concentrated electric current removes material from a workpiece using an electrode as the cutting tool. This includes electrochemical machining (ECM), electrical discharge machining (EDM), electroerosion, and wire erosion techniques for precision shaping, drilling, and finishing of conductive metals. The subclass also encompasses hybrid processes combining electrical material removal with mechanical, thermal, or chemical working methods to achieve enhanced machining capabilities.

Title

Titles differ between systems:

IPC: 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

CPC: 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 (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18)

Full Title

Full titles differ between systems:

IPC:

CPC:

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 (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18)

Of 11 combined children, 6 exist in both systems.

5 codes are CPC-only extensions.

Note: 5 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B23H 1/00 Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric since 1985 IPC+CPC Available in IPC and CPC
B23H 11/00 Auxiliary apparatus or details, not otherwise provided for since 1985 +2 CPC IPC+CPC Available in IPC and CPC
B23H 2200/00 Specific machining processes or workpieces 2nd only +3 CPC CPC only CPC only
B23H 2300/00 Power source circuits or energization 2nd only +2 CPC CPC only CPC only
B23H 2400/00 Moving mechanisms for tool electrodes 2nd only +1 CPC CPC only CPC only
B23H 2500/00 Holding and positioning of tool electrodes 2nd only +1 CPC CPC only CPC only
B23H 2600/00 Machining conditions 2nd only +1 CPC CPC only CPC only
B23H 3/00 Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte since 1985 IPC+CPC Available in IPC and CPC
B23H 5/00 Combined machining since 1985 IPC+CPC Available in IPC and CPC
B23H 7/00 Processes or apparatus applicable to both electrical discharge machining and electrochemical machining since 1985 IPC+CPC Available in IPC and CPC
B23H 9/00 Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects (heat treatment by cathodic discharge C21D1/38) since 1985 +5 CPC IPC+CPC Available in IPC and CPC