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

Navigate with arrow keys, Enter to open

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