SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

Introduced: September 1968

Description

B23K covers processes and equipment for joining, modifying, and cutting materials through thermal and energy-based methods, including soldering, unsoldering, welding, cladding, and plating operations. The subclass encompasses both localized heat-cutting techniques (such as flame, plasma, or oxy-fuel cutting) and laser-beam processing for material removal or modification. Specific technologies include manual and automated welding systems, brazing operations, thermal spraying for surface treatment, and precision cutting applications across metal and related materials. This classification excludes general metal-working operations covered elsewhere and focuses specifically on processes that use heat or concentrated energy sources as the primary working mechanism.

Of 23 combined children, 19 exist in both systems.

2 codes are CPC-only extensions, 2 exist only in IPC.

Note: 2 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

B23K 1/00 Soldering, e.g. brazing, or unsoldering (B23K3/00 takes precedence) +4 CPC IPC+CPC Available in IPC and CPC
B23K 10/00 Welding or cutting by means of a plasma since 1990 +2 CPC IPC+CPC Available in IPC and CPC
B23K 101/00 Articles made by soldering, welding or cutting since 1990 −13 IPC IPC only IPC only
B23K 103/00 Materials to be soldered, welded or cut since 1990 −4 IPC IPC only IPC only
B23K 11/00 Resistance welding; Severing by resistance heating +3 CPC IPC+CPC Available in IPC and CPC
B23K 13/00 Welding by high-frequency current heating IPC+CPC Available in IPC and CPC
B23K 15/00 Electron-beam welding or cutting +7 CPC IPC+CPC Available in IPC and CPC
B23K 17/00 Use of the energy of nuclear particles in welding or related techniques IPC+CPC Available in IPC and CPC
B23K 20/00 Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating since 1980 +3 CPC IPC+CPC Available in IPC and CPC
B23K 2101/00 Articles made by soldering, welding or cutting 2nd only +20 CPC CPC only CPC only
B23K 2103/00 Materials to be soldered, welded or cut 2nd only +6 CPC CPC only CPC only
B23K 23/00 Alumino-thermic welding IPC+CPC Available in IPC and CPC
B23K 25/00 Slag welding, i.e. using a heated layer or mass of powder, slag or the like in contact with the material to be joined +1 CPC IPC+CPC Available in IPC and CPC
B23K 26/00 Working by laser beam, e.g. welding, cutting or boring since 1974 +4 CPC IPC+CPC Available in IPC and CPC
B23K 28/00 Welding or cutting not covered by groups B23K5/00 - B23K26/00 since 1974 +2 CPC IPC+CPC Available in IPC and CPC
B23K 3/00 Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods IPC+CPC Available in IPC and CPC
B23K 31/00 Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 +2 CPC IPC+CPC Available in IPC and CPC
B23K 33/00 Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby +2 CPC IPC+CPC Available in IPC and CPC
B23K 35/00 Rods, electrodes, materials, or media, for use in soldering, welding, or cutting +1 CPC IPC+CPC Available in IPC and CPC
B23K 37/00 Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass IPC+CPC Available in IPC and CPC