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)

Child Classifications

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• B23H 9/001 CPC only CPC only
• B23H 9/003 CPC only CPC only
• B23H 9/005 CPC only CPC only
• B23H 9/006 CPC only CPC only
• B23H 9/008 CPC only CPC only
• B23H 9/02 Trimming or deburring since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/04 Treating surfaces of rolls since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/06 Marking or engraving since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/08 Sharpening since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/10 Working turbine blades or nozzles since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/12 Forming parts of complementary shape, e.g. punch-and-die since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/14 Making holes since 1985 IPC+CPC Available in IPC and CPC
• B23H 9/18 Producing external conical surfaces or spikes (B23H9/08 takes precedence) since 1985 IPC+CPC Available in IPC and CPC