B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
  
SHAPING
 B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles B21D; wire-working B21F; making pins, needles, or nails B21G; making chains B21L; grinding B24)
 B23

Note(s)

  1. In addition to operations not provided for in any other class, this class provides, in sub-class B23P, for combinations of operations provided for in different sub-classes of classes B21-B24, with the exception of subsidiary operations performed in conjunction with main operations covered by a single sub-class.
  2. In the following elaborations:
    1. The term "metal-working" should be understood as covering the working of other materials unless the context requires otherwise.
    2. The term "kind of operation" and similar expressions relate to such metal-working operations as boring, drilling, milling and grinding.
    3. The term "kind of machine" means a machine designed for a particular kind of metal-working operation (e.g. a lathe).
    4. The term "form of machine" means a machine of a particular kind adapted or arranged for a particular way of working or for particular work, e.g. face-plate lathe, tailstock lathe, turret lathe.
    5. The term "different machines" is to be understood as covering different forms of machines for performing the same type of metal-working operation, e.g. vertical and horizontal boring machines.
  3. Sub-class B23Q comprises features, specific to machine tools, which relate to a requirement or problem of a nature which is not peculiar to a particular kind of machine tool, e.g. feeding work, although the realisation of these features may differ according to the kind of machine tool concerned. That sub-class provides in general for such features, even if the feature or a specific function, in any particular case, is to some extent peculiar to, or is claimed only for, machine tools designed for one particular operation; only in exceptional cases are such features to be classified in the sub-class for the machine tool concerned. Certain features of this general nature are, however, referred to sub-classes relating to particular metal-working operations, especially B23B, in which case the sub-classes in question are not restricted, in respect of those features, to the kind of machine tool with which they are primarily concerned. If details, components, or accessories have no essential feature specific to machine tools, the more general class, e.g. F16, takes precedence.
 B23K
SOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM (making metal-coated products by extruding metal B21C 23/22; building up linings or coverings by casting B22D 19/08; casting by dipping B22D 23/04; manufacture of composite layers by sintering metal powder B22F 7/00; arrangements on machine tools for copying or controlling B23Q; covering metals or covering materials with metals, not otherwise provided for C23C; burners F23D)
 B23K

Note(s)

Electric circuits specially adapted for these purposes are dealt with in this sub-class.

 B23K 1/00 - 
B23K 3/00
Soldering, i.e. uniting metals using solder and applying heat without melting either of the parts to be united (essentially requiring the use of welding machines or welding equipment, see the relevant groups for the welding machines or welding equipment)
 B23K 1/00
Soldering metal (B23K 3/00 takes precedence; characterised only by the use of special materials or media B23K 35/00; dip or wave soldering in the manufacture of printed circuits H05K 3/34)
 B23K 1/02
·  Soft soldering
 B23K 1/04
·  Brazing or high-temperature soldering
 B23K 1/06
·  making use of vibrations, e.g. supersonic vibrations
 B23K 1/08
·  Soldering by means of dipping in molten solder
 B23K 1/10
·  Arc-stud soldering
 B23K 1/12
·  specially adapted for particular articles or work
 B23K 1/14
·  ·  for soldering seams (making tubes involving operations other than soldering B21C)
 B23K 1/16
·  ·  ·  longitudinal seams, e.g. of shells
 B23K 1/18
·  ·  ·  circumferential seams, e.g. of shells
 B23K 1/19
·  taking account of the properties of the materials to be soldered  [3]
 B23K 1/20
·  Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating (preparation of surfaces in particular ways, see the relevant classes for the treatments or the materials treated, e.g. C23C, C04B)
 B23K 3/00
Tools, devices, or special appurtenances for soldering, not adapted for special methods (materials used for soldering B23K 35/00)
 B23K 3/02
·  Soldering irons; Bits
 B23K 3/04
·  Heating appliances (soldering lamps or blowpipes F23D; electric heating elements H05B)
 B23K 3/06
·  Solder feeding devices; Solder melting pans
 B23K 5/00 - 
B23K 7/00
Flame welding or cutting
 B23K 5/00
Gas flame welding
 B23K 5/02
·  Seam welding (making tubes involving operations other than welding B21C)
 B23K 5/04
·  ·  using additional profiled strips or like of welding metal along seam edges
 B23K 5/06
·  ·  Welding longitudinal seams
 B23K 5/08
·  ·  Welding circumferential seams
 B23K 5/10
·  Welding workpieces essentially comprising layers of different metals, e.g. plated workpieces
 B23K 5/12
·  taking account of the properties of the material to be welded
 B23K 5/14
·  ·  of non-ferrous metals (B23K 5/16 takes precedence)
 B23K 5/16
·  ·  of different metals
 B23K 5/18
·  for purposes other than joining parts, e.g. built-up welding
 B23K 5/20
·  making use of vibrations, e.g. supersonic vibrations
 B23K 5/207
·  specially adapted for particular articles or work  [3]
 B23K 5/213
·  Preliminary treatment  [3]
 B23K 5/22
·  Auxiliary equipment, e.g. backings, guides
 B23K 5/24
·  ·  Arrangements for supporting torches (not restricted to flame welding B23K 37/02)
 B23K 7/00
Cutting, scarfing, or desurfacing by applying flames
 B23K 7/02
·  Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
 B23K 7/04
·  Machines, apparatus, or equipment specially adapted for cutting curved workpieces, e.g. tubes
 B23K 7/06
·  Machines, apparatus, or equipment specially designed for scarfing or desurfacing
 B23K 7/08
·  by applying additional compounds or means favouring the cutting, scarfing, or desurfacing procedure
 B23K 7/10
·  Auxiliary devices, e.g. for guiding or supporting the torch (guiding means applicable to other metal-working machines B23Q)
 B23K 9/00 - 
B23K 13/00
Electric welding or cutting
 B23K 9/00
Arc welding or cutting (electro-slag welding B23K 25/00; welding transformers H01F; welding generators H02K)
 B23K 9/02
·  Seam welding; Backing means; Inserts
 B23K 9/04
·  Welding for other purposes than joining, e.g. built-up welding
 B23K 9/06
·  Arrangements or circuits for generating ignition voltage and stabilising the arc
 B23K 9/08
·  Arrangements or circuits for magnetic control of the arc
 B23K 9/09
·  Arrangements or circuits for arc welding with pulsed current or voltage  [3]
 B23K 9/10
·  Other electric circuits therefor; Protective circuits; Remote controls
 B23K 9/12
·  Automatic feeding of electrodes or work for spot or seam welding or cutting
 B23K 9/14
·  making use of insulated electrodes
 B23K 9/16
·  making use of shieldings gas
 B23K 9/18
·  Submerged-arc welding
 B23K 9/20
·  Stud welding
 B23K 9/22
·  Percussion welding
 B23K 9/225
·  specially adapted for particular articles or work  [3]
 B23K 9/23
·  taking account of the properties of the materials to be welded  [3]
 B23K 9/235
·  Preliminary treatment  [3]
 B23K 9/24
·  Features related to electrodes (form or composition of electrodes B23K 35/00)
 B23K 9/26
·  ·  Accessories for electrodes, e.g. ignition tips
 B23K 9/28
·  ·  Supporting devices for electrodes (not restricted to arc welding or cutting B23K 37/02)
 B23K 9/30
·  ·  ·  Vibrating holders for electrodes
 B23K 9/32
·  Accessories (earthing connections H01R)
 B23K 11/00
Resistance welding; Severing by resistance heating
 B23K 11/02
·  Pressure butt welding
 B23K 11/04
·  Flash butt welding
 B23K 11/06
·  using roller electrodes
 B23K 11/08
·  Seam welding not restricted to one of the preceding sub-groups
 B23K 11/10
·  Spot welding; Stitch welding
 B23K 11/12
·  ·  making use of vibrations
 B23K 11/14
·  Projection welding
 B23K 11/16
·  taking account of the properties of the material to be welded
 B23K 11/18
·  ·  of non-ferrous metals (B23K 11/20 takes precedence)
 B23K 11/20
·  ·  of different metals
 B23K 11/22
·  Severing by resistance heating
 B23K 11/24
·  Electric supply or control circuits therefor
 B23K 11/26
·  ·  Storage discharge welding
 B23K 11/28
·  Portable welding equipment
 B23K 11/30
·  Features relating to electrodes (form or composition of electrodes B23K 35/00)
 B23K 11/32
·  specially adapted for particular articles or work  [3]
 B23K 11/34
·  Preliminary treatment  [3]
 B23K 11/36
·  Auxiliary equipment  [3]
 B23K 13/00
Welding by induction heating
 B23K 13/02
·  Seam welding
 B23K 15/00 - 
B23K 28/00
Other welding or cutting; Working by laser beam
 B23K 15/00
Electron-beam welding or cutting (electron- or ion-beam tubes H01J 37/00)
 B23K 17/00
Using the energy of nuclear particles in welding or related techniques
 B23K 19/00
( transferred to B23K 20/00 )
 B23K 19/02
( transferred to B23K 20/12 )
 B23K 19/04
( transferred to B23K 20/10 )
 B23K 20/00
Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating  [3]
 B23K 20/02
·  by means of a press  [3]
 B23K 20/04
·  by means of a rolling mill  [3]
 B23K 20/06
·  by means of high energy impulses, e.g. magnetic energy  [3]
 B23K 20/08
·  ·  Explosive welding  [3]
 B23K 20/10
·  making use of vibrations, e.g. ultrasonic welding  [3]
 B23K 20/12
·  the heat being generated by friction; Friction welding  [3]
 B23K 20/14
·  Preventing or minimising gas access, or using protective gases or vacuum during welding (formed by material interposed between workpieces B23K 20/18)  [3]
 B23K 20/16
·  with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas  [3]
 B23K 20/18
·  Zonal welding by interposing weld-preventing substances between zones not to be welded  [3]
 B23K 20/20
·  Special methods allowing subsequent separation, e.g. of metals of high quality from scrap material  [3]
 B23K 20/22
·  taking account of the properties of the materials to be welded  [3]
 B23K 20/24
·  Preliminary treatment  [3]
 B23K 20/26
·  Auxiliary equipment  [3]
 B23K 21/00
( transferred to B23K 20/00 )
 B23K 21/02
( transferred to B23K 20/10 )
 B23K 23/00
Alumino-thermic welding
 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 (B23K 23/00 takes precedence; submerged-arc welding B23K 9/18)
 B23K 26/00
Working by laser beam, e.g. welding, cutting, boring (lasers per se H01S 3/00)  [2]
 B23K 26/02
·  Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam  [3]
 B23K 26/04
·  ·  Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light  [3]
 B23K 26/06
·  ·  Shaping the laser beam, e.g. by masks or multi-focussing (optical elements, systems, or apparatus, in general G02B)  [3]
 B23K 26/08
·  Devices involving relative movement between laser beam and workpiece  [3]
 B23K 26/10
·  ·  using a fixed support  [3]
 B23K 26/12
·  in a special atmosphere, e.g. in an enclosure  [3]
 B23K 26/14
·  using a flow, e.g. a jet of gas, in conjunction with the laser beam (B23K 26/12 takes precedence)  [3]
 B23K 26/16
·  Removing of by-products, e.g. particles or vapours produced during treatment of a workpiece (by a flow of gas B23K 26/14)  [3]
 B23K 26/18
·  using absorbing layers on the material being worked, e.g. for marking or protecting purposes  [3]
 B23K 28/00
Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding  [2]
 B23K 28/02
·  Combined welding or cutting procedures or apparatus  [2]
 B23K 31/00
Processes relevant to this sub-class, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups (making tubes or profiled bars involving operations other than soldering or welding B21C 37/04, B21C 37/08)
 B23K 31/02
·  relating to soldering or welding (dip or wave soldering in the manufacture of printed circuits H05K 3/34)
 B23K 31/04
·  ·  Connecting cutting edges or the like to tools
 B23K 31/06
·  ·  Making tubes with soldering or welding
 B23K 31/08
·  ·  Making profiled bars with soldered or welded seams
 B23K 31/10
·  relating to cutting or desurfacing
 B23K 33/00
Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
 B23K 35/00
Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
 B23K 35/02
·  characterised by mechanical features, e.g. shape
 B23K 35/04
·  ·  specially designed for use as electrodes (ignition tips for arc welding or cutting B23K 9/26)
 B23K 35/06
·  ·  ·  of non-circular cross-section; with special arrangement, e.g. internal
 B23K 35/08
·  ·  ·  ·  multi-cored; multiple
 B23K 35/10
·  ·  ·  ·  with more than one layer of coating or sheathing material
 B23K 35/12
·  ·  not specially designed for use as electrodes
 B23K 35/14
·  ·  ·  for soldering
 B23K 35/16
·  ·  ·  of non-circular cross-section; with special arrangement, e.g. internal (B23K 35/14 takes precedence)
 B23K 35/18
·  ·  ·  ·  multi-cored; multiple
 B23K 35/20
·  ·  ·  ·  with more than one layer of coating or sheathing material
 B23K 35/22
·  characterised by the composition or nature of the material
 B23K 35/24
·  ·  Selection of soldering or welding materials proper (B23K 35/34 takes precedence)
 B23K 35/26
·  ·  ·  with the principal constituent melting at less than 400 C
 B23K 35/28
·  ·  ·  with the principal constituent melting at less than 950 C
 B23K 35/30
·  ·  ·  with the principal constituent melting at less than 1550 C
 B23K 35/32
·  ·  ·  with the principal constituent melting at more than 1550 C
 B23K 35/34
·  ·  comprising compounds which yield metals when heated
 B23K 35/36
·  ·  Selection of non-metallic compositions, e.g. coatings, fluxes (B23K 35/34 takes precedence); Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest (selection of soldering or welding materials proper B23K 35/24)  [2]
 B23K 35/362
·  ·  ·  Selection of compositions of fluxes (B23K 35/365, B23K 35/368 take precedence)  [2]
 B23K 35/365
·  ·  ·  Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials  [2]
 B23K 35/368
·  ·  ·  Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials  [2]
 B23K 35/38
·  ·  Selection of media, e.g. special atmospheres for surrounding the working area
 B23K 35/40
·  Making wire or rods for soldering or welding (processes involving a single technical art, see the relevant classes, e.g. B05D, B21C)
 B23K 37/00
Auxiliary devices not specially adapted to a procedure covered by only one of the preceding main groups (eye-shields for welders worn on the operator's body or carried in the hand A61F 9/00; applicable to metal-working machines other than soldering, welding, and flame-cutting machines B23Q; other protective shields F16P 1/06)
 B23K 37/02
·  Carriages for supporting the welding or cutting element
 B23K 37/04
·  for holding or positioning work
 B23K 37/06
·  for positioning the molten material, e.g. confining it to a desired area