|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

|  | B01 - B07 |
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/LIQUID OR SOLID/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/SOLID SEPARATION |
Method |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B07B
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B
Apparatus |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B04B, B04C
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B

SHAPING

|  | B23 |
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles Fulltext... Hierarchy... Expanded...B21D; wire-working Fulltext... Hierarchy... Expanded...B21F; making pins, needles, or nails Fulltext... Hierarchy... Expanded...B21G; making chains Fulltext... Hierarchy... Expanded...B21L; grinding Fulltext... Hierarchy... Expanded...B24)

|  | B23 |
Note(s) This class covers: operations not provided for in any other class; combinations of operations covered by different subclasses of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B21-B24, which combinations are covered by subclass Fulltext... Hierarchy... Expanded...B23P, with the exception of subsidiary operations performed in conjunction with main operations covered by a single subclass; 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, which are covered by subclass Fulltext... Hierarchy... Expanded...B23Q, although the realisation of these features may differ according to the kind of machine tool concerned. The said subclass covers such features, in general, 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 classified in the subclass for the machine tool concerned. Certain features of this general nature are, however, referred to subclasses relating to particular metal-working operations, especially Fulltext... Hierarchy... Expanded...B23B, in which case the subclasses in question are not restricted, in respect of those features, to the kind of machine tool with which they are primarily concerned. In this class, the following terms or expressions are used with the meanings indicated: "metal-working" covers the working of other materials unless the context requires otherwise; "kind of operations" and similar expressions relate to such metal-working operations as boring, drilling, milling and grinding; "kind of machine" means a machine designed for a particular kind of metal-working operation (e.g. a lathe); "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; "different machines" covers different forms of machines for performing the same type of metal-working operation, e.g. vertical and horizontal boring machines. If details, components, or accessories have no essential feature specific to machine tools, the more general class, e.g. Fulltext... Hierarchy... Expanded...F16, takes precedence.

|  | B23K |
SOLDERING OR UNSOLDERING; 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 Fulltext... Hierarchy... Expanded...B21C 23/22; building up linings or coverings by casting Fulltext... Hierarchy... Expanded...B22D 19/08; casting by dipping Fulltext... Hierarchy... Expanded...B22D 23/04; manufacture of composite layers by sintering metal powder Fulltext... Hierarchy... Expanded...B22F 7/00; arrangements on machine tools for copying or controlling Fulltext... Hierarchy... Expanded...B23Q; covering metals or covering materials with metals, not otherwise provided for Fulltext... Hierarchy... Expanded...C23C; burners Fulltext... Hierarchy... Expanded...F23D)

|  | B23K |
Note(s) This subclass covers also electric circuits specially adapted for the purposes covered by the title of the subclass. In this subclass, the following term is used with the meaning indicated: "soldering" means uniting metals using solder and applying heat without melting either of the parts to be united. [5]

|  | B23K - B23K 31/00 |
Note(s) In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B23K 1/00-B23K 31/00, it is desirable to add the indexing codes of groups Fulltext... Hierarchy... Expanded...B23K 101/00 or Fulltext... Hierarchy... Expanded...B23K 103/00. [5]

|  | B23K |
Subclass index
SOLDERING | 1/00, 3/00
WELDING |
Characterised by the means used to produce heat |
by flame | 5/00
by electricity | 9/00, 11/00, 13/00
by means of plasma | 10/00
by nuclear particles | 15/00, 17/00
by alumino-thermic means | 23/00
by laser beam | 26/00
otherwise | 25/00, 28/00
Characterised by the use of impact or pressure | 20/00
Characterised by other features, processes not restricted to one particular group of this subclass | 28/00
CUTTING BY APPLYING HEAT LOCALLY; SEVERING | 7/00, 9/00, 15/00, 26/00, 28/00; 11/00
SCARFING, DESURFACING | 7/00
MATERIALS; AUXILIARY DEVICES | 35/00; 37/00
SPECIAL PROCESSES | 31/00, 33/00

|  | B23K 1/00 - B23K 3/00 |
Soldering, e.g. brazing, or unsoldering (essentially requiring the use of welding machines or welding equipment, see the relevant groups for the welding machines or welding equipment)

P:160 |  | B23K 1/00 |
Soldering, e.g. brazing, or unsoldering (Fulltext... Hierarchy... Expanded...B23K 3/00 takes precedence; characterised only by the use of special materials or media Fulltext... Hierarchy... Expanded...B23K 35/00; dip or wave soldering in the manufacture of printed circuits Fulltext... Hierarchy... Expanded...H05K 3/34) [5]

|  | B23K 1/002 |
· | Soldering by means of induction heating [5]

|  | B23K 1/005 |
· | Soldering by means of radiant energy [5]

|  | B23K 1/008 |
· | Soldering within a furnace (Fulltext... Hierarchy... Expanded...B23K 1/012 takes precedence) [5]

|  | B23K 1/012 |
· | Soldering with the use of hot gas [5]

|  | B23K 1/015 |
· · | Vapour-condensation soldering [5]

|  | B23K 1/018 |
· | Unsoldering; Removal of melted solder or other residues [5]

|  | B23K 1/06 |
· | making use of vibrations, e.g. supersonic vibrations

|  | B23K 1/08 |
· | Soldering by means of dipping in molten solder

|  | B23K 1/14 |
· | specially adapted for soldering seams (making tubes involving operations other than soldering Fulltext... Hierarchy... Expanded...B21C) [5]

|  | B23K 1/16 |
· · | longitudinal seams, e.g. of shells [5]

|  | B23K 1/18 |
· · | circumferential seams, e.g. of shells [5]

|  | 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. Fulltext... Hierarchy... Expanded...C04B, Fulltext... Hierarchy... Expanded...C23C)

P:150 |  | B23K 3/00 |
Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods (materials used for soldering Fulltext... Hierarchy... Expanded...B23K 35/00) [5]

|  | B23K 3/02 |
· | Soldering irons; Bits

|  | B23K 3/03 |
· · | electrically heated [5]

|  | B23K 3/04 |
· | Heating appliances (soldering lamps or blow-pipes Fulltext... Hierarchy... Expanded...F23D; electric heating in general Fulltext... Hierarchy... Expanded...H05B)

|  | B23K 3/047 |
· · | electric [5]

|  | B23K 3/053 |
· · · | using resistance wires [5]

|  | B23K 3/06 |
· | Solder feeding devices; Solder melting pans

|  | B23K 3/08 |
· | Auxiliary devices therefor (cleaning pipes or tubes or systems of pipes or tubes, e.g. before soldering, Fulltext... Hierarchy... Expanded...B08B 9/02) [5]

|  | B23K 5/00 - B23K 7/00 |
Flame welding or cutting

P:120 |  | B23K 5/00 |
Gas flame welding

|  | B23K 5/02 |
· | Seam welding (making tubes involving operations other than welding Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 5/213 |
· | Preliminary treatment [3]

|  | B23K 5/22 |
· | Auxiliary equipment, e.g. backings, guides

|  | B23K 5/24 |
· · | Arrangements for supporting torches (not restricted to flame welding Fulltext... Hierarchy... Expanded...B23K 37/02)

P:130 |  | B23K 7/00 |
Cutting, scarfing, or desurfacing by applying flames

|  | 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 Fulltext... Hierarchy... Expanded...B23Q)

|  | B23K 9/00 - B23K 13/00 |
Electric welding or cutting

P:100 |  | B23K 9/00 |
Arc welding or cutting (electro-slag welding Fulltext... Hierarchy... Expanded...B23K 25/00; welding transformers Fulltext... Hierarchy... Expanded...H01F; welding generators Fulltext... Hierarchy... Expanded...H02K)

|  | B23K 9/007 |
· | Spot arc welding [5]

|  | B23K 9/013 |
· | Arc cutting, gouging, scarfing or desurfacing [5]

|  | B23K 9/02 |
· | Seam welding; Backing means; Inserts

|  | B23K 9/022 |
· · | Welding by making use of electrode vibrations [5]

|  | B23K 9/025 |
· · | for rectilinear seams [5]

|  | B23K 9/028 |
· · | for curved planar seams [5]

|  | B23K 9/032 |
· · | for three-dimensional seams [5]

|  | B23K 9/035 |
· · | with backing means disposed under the seam [5]

|  | B23K 9/038 |
· · | using moulding means (not restricted to arc welding Fulltext... Hierarchy... Expanded...B23K 37/06) [5]

|  | B23K 9/04 |
· | Welding for other purposes than joining, e.g. built-up welding

|  | B23K 9/06 |
· | Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc [5]

|  | B23K 9/067 |
· · | Starting the arc [5]

|  | B23K 9/073 |
· · | Stabilising the arc [5]

|  | 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 9/095 |
· | Monitoring or automatic control of welding parameters [5]

|  | B23K 9/10 |
· | Other electric circuits therefor; Protective circuits; Remote controls

|  | B23K 9/12 |
· | Automatic feeding or moving of electrodes or work for spot or seam welding or cutting

|  | B23K 9/127 |
· · | Means for tracking lines during arc welding or cutting (copying in general Fulltext... Hierarchy... Expanded...B23Q 35/00) [5]

|  | B23K 9/133 |
· · | Means for feeding electrodes, e.g. drums, rolls, motors [5]

|  | B23K 9/14 |
· | making use of insulated electrodes

|  | B23K 9/16 |
· | making use of shielding gas

|  | B23K 9/167 |
· · | and of a non-consumable electrode [5]

|  | B23K 9/173 |
· · | and of consumable electrode [5]

|  | B23K 9/18 |
· | Submerged-arc welding

|  | B23K 9/20 |
· | Stud welding

|  | B23K 9/22 |
· | Percussion welding

|  | 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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B23K 37/02)

|  | B23K 9/29 |
· · · | Supporting devices adapted for making use of shielding means [5]

|  | B23K 9/30 |
· · · | Vibrating holders for electrodes (Fulltext... Hierarchy... Expanded...B23K 9/022 takes precedence) [5]

|  | B23K 9/32 |
· | Accessories (earthing connections Fulltext... Hierarchy... Expanded...H01R)

P:40 |  | B23K 10/00 |
Welding or cutting by means of a plasma [5]

|  | B23K 10/02 |
· | Plasma welding [5]

P:110 |  | 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 subgroups

|  | B23K 11/087 |
· · | for rectilinear seams [5]

|  | B23K 11/093 |
· · | for curved planar seams [5]

|  | B23K 11/10 |
· | Spot welding; Stitch welding

|  | B23K 11/11 |
· · | Spot welding [5]

|  | 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 (Fulltext... Hierarchy... Expanded...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 11/25 |
· · | Monitoring devices [5]

|  | B23K 11/26 |
· · | Storage discharge welding

|  | B23K 11/28 |
· | Portable welding equipment

|  | B23K 11/30 |
· | Features relating to electrodes (form or composition of electrodes Fulltext... Hierarchy... Expanded...B23K 35/00)

|  | B23K 11/31 |
· · | Electrode holders (not restricted to resistance welding or severing by resistance heating Fulltext... Hierarchy... Expanded...B23K 37/02) [5]

|  | B23K 11/34 |
· | Preliminary treatment [3]

|  | B23K 11/36 |
· | Auxiliary equipment (Fulltext... Hierarchy... Expanded...B23K 11/31 takes precedence) [3,5]

P:80 |  | B23K 13/00 |
Welding by high-frequency current heating [5]

|  | B23K 13/01 |
· | by induction heating [5]

|  | B23K 13/02 |
· · | Seam welding

|  | B23K 13/04 |
· | by conduction heating [5]

|  | B23K 13/06 |
· | characterised by the shielding of the welding zone against influence of the surrounding atmosphere (selection of media Fulltext... Hierarchy... Expanded...B23K 35/38) [5]

|  | B23K 13/08 |
· | Electric supply or control circuits therefor [5]

|  | B23K 15/00 - B23K 28/00 |
Other welding or cutting; Working by laser beam [3]

P:60 |  | B23K 15/00 |
Electron-beam welding or cutting (electron- or ion-beam tubes Fulltext... Hierarchy... Expanded...H01J 37/00)

|  | B23K 15/02 |
· | Control circuits therefor [5]

|  | B23K 15/04 |
· | for welding annular seams [5]

|  | B23K 15/06 |
· | within a vacuum chamber (Fulltext... Hierarchy... Expanded...B23K 15/04 takes precedence) [5]

|  | B23K 15/08 |
· | Removing material, e.g. by cutting, by hole drilling [5]

|  | B23K 15/10 |
· | Non-vacuum electron beam-welding or cutting [5]

P:20 |  | B23K 17/00 |
Use of the energy of nuclear particles in welding or related techniques

P:50 |  | 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 Fulltext... Hierarchy... Expanded...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 20/227 |
· · | with ferrous layer [5]

|  | B23K 20/233 |
· · | without ferrous layer [5]

|  | B23K 20/24 |
· | Preliminary treatment [3]

|  | B23K 20/26 |
· | Auxiliary equipment [3]

P:70 |  | B23K 23/00 |
Alumino-thermic welding

P:90 |  | 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 (Fulltext... Hierarchy... Expanded...B23K 23/00 takes precedence; submerged-arc welding Fulltext... Hierarchy... Expanded...B23K 9/18)

P:30 |  | B23K 26/00 |
Working by laser beam, e.g. welding, cutting, boring (lasers Fulltext... Hierarchy... Expanded...H01S 3/00) [2,3]

|  | 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 26/03 |
· · | Observing the workpiece [7]

|  | 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-focusing (optical elements, systems, or apparatus, in general Fulltext... Hierarchy... Expanded...G02B) [3]

|  | B23K 26/067 |
· · · | Dividing the beam into multiple beams, e.g. multi-focusing [7]

|  | B23K 26/073 |
· · · | Shaping the laser spot [7]

|  | 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 (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B23K 26/14) [3]

|  | B23K 26/18 |
· | using absorbing layers on the material being worked, e.g. for marking or protecting purposes [3]

|  | B23K 26/20 |
· | Bonding, e.g. welding (soldering by means of radiant energy Fulltext... Hierarchy... Expanded...B23K 1/005; joining of preformed plastics parts by heating using laser beam Fulltext... Hierarchy... Expanded...B29C 65/16) [7]

|  | B23K 26/22 |
· · | Spot welding [7]

|  | B23K 26/24 |
· · | Seam welding [7]

|  | B23K 26/26 |
· · · | of rectilinear seams [7]

|  | B23K 26/28 |
· · · | of curved planar seams [7]

|  | B23K 26/30 |
· · · | of three-dimensional seams [7]

|  | B23K 26/32 |
· · | taking account of the properties of the material involved [7]

|  | B23K 26/34 |
· | Welding for purposes other than joining, e.g. build-up welding [7]

|  | B23K 26/36 |
· | Removing material [7]

|  | B23K 26/38 |
· · | by boring or cutting [7]

|  | B23K 26/40 |
· · | taking account of the properties of the material involved [7]

|  | B23K 26/42 |
· | Preliminary treatment; Auxiliary operations or equipment (Fulltext... Hierarchy... Expanded...B23K 26/16 takes precedence) [7]

P:140 |  | B23K 28/00 |
Welding or cutting not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B23K 5/00-B23K 26/00 (joining workpieces by electrolysis Fulltext... Hierarchy... Expanded...C25D 2/00; electrolytic removal of materials Fulltext... Hierarchy... Expanded...C25F) [2]

|  | B23K 28/02 |
· | Combined welding or cutting procedures or apparatus [2]

P:10 |  | 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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B23K 1/00-B23K 28/00 (making tubes or profiled bars involving operations other than soldering or welding Fulltext... Hierarchy... Expanded...B21C 37/04, Fulltext... Hierarchy... Expanded...B21C 37/08)

|  | B23K 31/02 |
· | relating to soldering or welding (dip or wave soldering in the manufacture of printed circuits Fulltext... Hierarchy... Expanded...H05K 3/34)

|  | B23K 31/10 |
· | relating to cutting or desurfacing

|  | B23K 31/12 |
· | relating to investigating the properties, e.g. the weldability, of materials [5]

P:0 |  | B23K 33/00 |
Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby

P:180 |  | 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 Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B23K 35/24) [2]

|  | B23K 35/362 |
· · · | Selection of compositions of fluxes (Fulltext... Hierarchy... Expanded...B23K 35/365, Fulltext... Hierarchy... Expanded...B23K 35/368 take precedence) [2]

|  | B23K 35/363 |
· · · · | for soldering or brazing [4]

|  | 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 subclasses, e.g. Fulltext... Hierarchy... Expanded...B05D, Fulltext... Hierarchy... Expanded...B21C)

P:170 |  | B23K 37/00 |
Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the other main groups of this subclass (eye-shields for welders worn on the operator's body or carried in the hand Fulltext... Hierarchy... Expanded...A61F 9/00; applicable to metal-working machines other than soldering, welding, or flame-cutting machines Fulltext... Hierarchy... Expanded...B23Q; other protective shields Fulltext... Hierarchy... Expanded...F16P 1/06)

|  | B23K 37/02 |
· | Carriages for supporting the welding or cutting element

|  | B23K 37/04 |
· | for holding or positioning work

|  | B23K 37/047 |
· · | moving work to adjust its position between soldering, welding or cutting steps (Fulltext... Hierarchy... Expanded...B23K 37/053 takes precedence) [5]

|  | B23K 37/053 |
· · | aligning cylindrical work; Clamping devices therefor [5]

|  | B23K 37/06 |
· | for positioning the molten material, e.g. confining it to a desired area

|  | B23K 37/08 |
· | for flash removal [5]

|  | B23K 101/00 - B23K 103/00 |
Indexing scheme associated with groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B23K 1/00-B23K 31/00, relating to articles made by soldering, welding or cutting or to materials to be soldered, welded or cut. [5]

P:190 |  | B23K 101/00 |
Articles made by soldering, welding or cutting [5]

|  | B23K 101/02 |
· | Honeycomb structures [5]

|  | B23K 101/04 |
· | Tubular or hollow articles [5]

|  | B23K 101/06 |
· · | Tubes [5]

|  | B23K 101/08 |
· · · | finned or ribbed [5]

|  | B23K 101/10 |
· · | Pipe-lines [5]

|  | B23K 101/12 |
· · | Vessels [5]

|  | B23K 101/14 |
· · | Heat exchangers [5]

|  | B23K 101/16 |
· | Bands or sheets of indefinite length [5]

|  | B23K 101/18 |
· | Sheet panels [5]

|  | B23K 101/20 |
· | Tools [5]

|  | B23K 101/22 |
· | Nets, wire fabrics or the like [5]

|  | B23K 101/24 |
· | Frameworks [5]

|  | B23K 101/26 |
· | Railway- or like rails [5]

|  | B23K 101/28 |
· | Beams [5]

|  | B23K 101/30 |
· | Chains, hoops or rings [5]

|  | B23K 101/32 |
· | Wires [5]

|  | B23K 101/34 |
· | Coated articles [5]

|  | B23K 101/36 |
· | Electric or electronic devices [5]

|  | B23K 101/38 |
· · | Conductors [5]

|  | B23K 101/40 |
· · | Semiconductor devices [5]

|  | B23K 101/42 |
· · | Printed circuits [5]

P:200 |  | B23K 103/00 |
Materials to be soldered, welded or cut [5]

|  | B23K 103/02 |
· | Iron or ferrous alloys [5]

|  | B23K 103/04 |
· · | Steel alloys [5]

|  | B23K 103/06 |
· · | Cast-iron alloys [5]

|  | B23K 103/08 |
· | Non-ferrous metals or alloys [5]

|  | B23K 103/10 |
· · | Aluminium or alloys thereof [5]

|  | B23K 103/12 |
· · | Copper or alloys thereof [5]

|  | B23K 103/14 |
· · | Titanium or alloys thereof [5]

|  | B23K 103/16 |
· | Composite materials [5]

|  | B23K 103/18 |
· | Dissimilar materials [5]

|  | B23K 103/20 |
· · | Ferrous alloys and aluminium or alloys thereof [5]

|  | B23K 103/22 |
· · | Ferrous alloys and copper or alloys thereof [5]

|  | B23K 103/24 |
· · | Ferrous alloys and titanium or alloys thereof [5]