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CPC
COOPERATIVE PATENT CLASSIFICATION
B21C
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL [2018-08]
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
Metal drawing [2021-01]
B21C 1/00
Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing [2013-01]
B21C 1/003
.
{Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences} [2013-01]
B21C 1/006
.
{using vibratory energy} [2013-01]
B21C 1/02
.
Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums [2013-01]
B21C 1/04
. .
with two or more dies operating in series [2013-01]
B21C 1/06
. . .
in which the material slips on the drums [2013-01]
B21C 1/08
. . .
in which the material does not slip on the drums [2013-01]
B21C 1/10
. . . .
with accumulation of material between consecutively-arranged dies [2013-01]
B21C 1/12
. .
Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms [2021-01]
B21C 1/14
. .
Drums, e.g. capstans; Connection of grippers thereto; Grippers specially adapted for drawing machines or apparatus of the drum type; Couplings specially adapted for these drums [2021-01]
B21C 1/16
.
Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes [2017-08]
B21C 1/18
. .
from stock of limited length (B21C 1/22 takes precedence) [2013-01]
B21C 1/20
. .
from stock of essentially unlimited length (B21C 1/22 takes precedence) [2013-01]
B21C 1/22
. .
specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D 5/10) [2013-01]
B21C 1/24
. . .
by means of mandrels [2021-01]
B21C 1/26
. . . .
Push-bench drawing [2013-01]
B21C 1/27
. .
Carriages; Drives [2013-01]
B21C 1/28
. . .
Carriages; Connections of grippers thereto; Grippers [2021-01]
B21C 1/30
. . .
Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive {(endlessly revolving chain systems for metal coiling: B21C 47/3458)} [2013-01]
B21C 1/305
. . . .
{Linear motor pulling devices} [2013-01]
B21C 1/32
. .
Feeding or discharging the material or mandrels [2013-01]
B21C 1/34
. .
Guiding or supporting the material or mandrels [2013-01]
B21C 3/00
Profiling tools for metal drawing; Combinations of dies and mandrels [2013-01]
B21C 3/02
.
Dies; Selection of material therefor; Cleaning thereof [2013-01]
B21C 3/025
. .
{comprising diamond parts} [2013-01]
B21C 3/04
. .
with non-adjustable section (B21C 3/08 takes precedence) [2013-01]
B21C 3/06
. .
with adjustable section (B21C 3/08 takes precedence) [2013-01]
B21C 3/08
. .
with section defined by rollers, balls, or the like [2013-01]
B21C 3/10
. .
with hydraulic forces acting immediately on work [2013-01]
B21C 3/12
. .
Die holders; Rotating dies [2013-01]
B21C 3/14
. . .
Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating [2013-01]
B21C 3/16
.
Mandrels; Mounting or adjusting same [2021-01]
B21C 3/18
.
Making tools by operations not covered by a single other subclass; Repairing [2017-08]
B21C 5/00
Pointing; Push-pointing [2013-01]
B21C 5/003
.
{of hollow material, e.g. tube} [2013-01]
B21C 5/006
.
{of solid material, e.g. wire or profiles} [2013-01]
B21C 9/00
Cooling, heating or lubricating drawing material (B21C 3/14 takes precedence) [2013-01]
B21C 9/005
.
{Cold application of the lubricant (when combined with heating steps B21C 9/00)} [2013-01]
B21C 9/02
.
Selection of compositions therefor [2013-01]
B21C 19/00
Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus [2013-01]
Metal extruding [2021-01]
B21C 23/00
Extruding metal; Impact extrusion [2013-01]
B21C 23/001
.
{to improve the material properties, e.g. lateral extrusion} [2013-01]
B21C 23/002
.
{Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences} [2013-01]
B21C 23/004
.
{using vibratory energy} [2013-01]
B21C 23/005
.
{Continuous extrusion starting from solid state material (B21C 23/008 takes precedence)} [2013-01]
B21C 23/007
.
{Hydrostatic extrusion} [2013-01]
B21C 23/008
. .
{Continuous extrusion} [2013-01]
B21C 23/01
.
starting from material of particular form or shape, e.g. mechanically pre-treated (B21C 23/22 takes precedence) [2021-01]
B21C 23/02
.
Making uncoated products [2013-01]
B21C 23/03
. .
by both direct and backward extrusion [2013-01]
B21C 23/035
. . .
{Making products of generally elongated shape} [2013-01]
B21C 23/04
. .
by direct extrusion [2013-01]
B21C 23/06
. . .
Making sheets [2013-01]
B21C 23/08
. . .
Making wire, bars, tubes [2013-01]
B21C 23/085
. . . .
{Making tubes (B21C 23/10 take precedence)} [2013-01]
B21C 23/10
. . . .
Making finned tubes [2013-01]
B21C 23/12
. . . .
Extruding bent tubes or rods [2013-01]
B21C 23/14
. . .
Making other products [2013-01]
B21C 23/142
. . . .
{Making profiles} [2013-01]
B21C 23/145
. . . . .
{Interlocking profiles} [2013-01]
B21C 23/147
. . . .
{Making drill blanks (making twist-drills B23P 15/32)} [2013-01]
B21C 23/16
. . . .
Making turbo blades or propellers [2013-01]
B21C 23/18
. .
by impact extrusion [2013-01]
B21C 23/183
. . .
{by forward extrusion} [2013-01]
B21C 23/186
. . .
{by backward extrusion} [2013-01]
B21C 23/20
. .
by backward extrusion [2013-01]
B21C 23/205
. . .
{Making products of generally elongated shape} [2013-01]
B21C 23/21
.
Presses specially adapted for extruding metal [2021-01]
B21C 23/211
. .
{Press driving devices} [2013-01]
B21C 23/212
. .
{Details (B21C 23/217, B21C 23/218 take precedence)} [2013-01]
B21C 23/214
. . .
{Devices for changing die or container} [2013-01]
B21C 23/215
. . .
{Devices for positioning or centering press components, e.g. die or container} [2013-01]
B21C 23/217
. .
{Tube extrusion presses (B21C 23/218 takes precedence)} [2013-01]
B21C 23/218
. .
{Indirect extrusion presses} [2013-01]
B21C 23/22
.
Making metal-coated products; Making products from two or more metals [2013-01]
B21C 23/24
. .
Covering indefinite lengths of metal or non-metal material with a metal coating [2013-01]
B21C 23/26
. . .
Applying metal coats to cables, e.g. to insulated electric cables [2013-01]
B21C 23/28
. . . .
on intermittently-operating extrusion presses [2013-01]
B21C 23/30
. . . .
on continuously-operating extrusion presses [2013-01]
B21C 23/32
.
Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied [2021-01]
B21C 25/00
Profiling tools for metal extruding [2013-01]
B21C 25/02
.
Dies [2013-01]
B21C 25/025
. .
{Selection of materials therefor} [2013-01]
B21C 25/04
.
Mandrels [2013-01]
B21C 25/06
.
Press heads, dies, or mandrels for coating work [2013-01]
B21C 25/08
.
Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation [2013-01]
B21C 25/10
.
Making tools by operations not covered by a single other subclass [2013-01]
B21C 26/00
Rams or plungers; Discs therefor [2013-01]
B21C 27/00
Containers for metal to be extruded (B21C 29/02 takes precedence) [2013-01]
B21C 27/02
.
for making coated work [2013-01]
B21C 27/04
.
Venting metal-container chamber [2013-01]
B21C 29/00
Cooling or heating work or parts of the extrusion press; {Gas treatment of work} [2013-01]
B21C 29/003
.
{Cooling or heating of work} [2013-01]
B21C 29/006
.
{Gas treatment of work, e.g. to prevent oxidation or to create surface effects} [2013-01]
B21C 29/02
.
{Cooling or heating} of containers for metal to be extruded [2013-01]
B21C 29/04
.
{Cooling or heating} of press heads, dies or mandrels [2013-01]
B21C 31/00
Control devices, e.g. for regulating the pressing speed or temperature of metal (B21C 25/08 takes precedence); Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses [2021-01]
B21C 33/00
Feeding extrusion presses with metal to be extruded {; Loading the dummy block} [2017-08]
B21C 33/002
.
{Encapsulated billet (manufacturing wires or fine wires B21C 37/045, B21C 37/047)} [2013-01]
B21C 33/004
.
{Composite billet} [2013-01]
B21C 33/006
.
{Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets} [2013-01]
B21C 33/008
.
{Scalping billets, e.g. for removing oxide layers prior or during extrusion} [2013-01]
B21C 33/02
.
the metal being in liquid form [2013-01]
B21C 35/00
Removing work or waste from extruding presses; Drawing-off extruded work (in connection with the extruding of bent tubes or rods B21C 23/12); Cleaning dies, ducts, containers, or mandrels [2013-01]
B21C 35/02
.
Removing or drawing-off work {(linear motor pulling devices B21C 1/305)} [2013-01]
B21C 35/023
. .
{Work treatment directly following extrusion, e.g. further deformation or surface treatment (B21C 35/03 takes precedence; gas treatment B21C 29/006)} [2013-01]
B21C 35/026
. . .
{Removing sections from the extruded work, e.g. removing a strip to create an open profile} [2013-01]
B21C 35/03
. .
Straightening the work [2021-01]
B21C 35/04
.
Cutting-off or removing waste [2013-01]
B21C 35/06
.
Cleaning dies, ducts, containers or mandrels [2013-01]
B21C 37/00
Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape [2021-01]
B21C 37/02
.
of sheets [2013-01]
B21C 37/04
.
of bars or wire {(wire-like electrical connectors in or for semiconductor devices H01L 24/42)} [2013-01]
B21C 37/042
. .
{Manufacture of coated wire or bars} [2013-01]
B21C 37/045
. .
{Manufacture of wire or bars with particular section or properties} [2013-01]
B21C 37/047
. .
{of fine wires} [2013-01]
B21C 37/06
.
of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes [2021-01]
B21C 37/065
. .
{starting from a specific blank, e.g. tailored blank} [2013-01]
B21C 37/08
. .
Making tubes with welded or soldered seams {(with helically arranged seams B21C 37/122)} [2021-01]
B21C 37/0803
. . .
{the tubes having a special shape, e.g. polygonal tubes} [2013-01]
B21C 37/0807
. . .
{Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off} [2013-01]
B21C 37/0811
. . . .
{removing or treating the weld bead} [2013-01]
B21C 37/0815
. . .
{without continuous longitudinal movement of the sheet during the bending operation} [2021-01]
B21C 37/0818
. . .
{Manufacture of tubes by drawing of strip material through dies} [2013-01]
B21C 37/0822
. . .
{Guiding or aligning the edges of the bent sheet} [2013-01]
B21C 37/0826
. . .
{Preparing the edges of the metal sheet with the aim of having some effect on the weld} [2013-01]
B21C 37/083
. . .
Supply, or operations combined with supply, of strip material [2013-01]
B21C 37/087
. . .
using rods or strips of soldering material [2013-01]
B21C 37/09
. . .
of coated strip material {; Making multi-wall tubes} [2017-08]
B21C 37/10
. .
Making tubes with riveted seams {or with non-welded and non-soldered seams} [2013-01]
B21C 37/101
. . .
{Making of the seams} [2013-01]
B21C 37/102
. . .
{of coated strip material (making multi-wall tubes)} [2013-01]
B21C 37/104
. . .
{the tubes having a special shape, e.g. polygonal tubes} [2013-01]
B21C 37/105
. . .
{Supply, or operations combined with supply, of strip material} [2013-01]
B21C 37/107
. . .
{Tube treating or manipulating combined with or specially adapted for use in connection with tube-making machines, e.g. drawing-off devices, cutting-off} [2016-08]
B21C 37/108
. . .
{without continuous longitudinal movement of the sheet during the bending operation} [2021-01]
B21C 37/12
. .
Making tubes or metal hoses with helically arranged seams [2013-01]
B21C 37/121
. . .
{with non-welded and non-soldered seams} [2013-01]
B21C 37/122
. . .
{with welded or soldered seams} [2021-01]
B21C 37/123
. . .
{of coated strip material; Making multi-wall tubes} [2013-01]
B21C 37/124
. . .
{the tubes having a special shape, e.g. with corrugated wall, flexible tubes} [2013-01]
B21C 37/125
. . . .
{curved section, e.g. elbow} [2013-01]
B21C 37/126
. . .
{Supply, or operations combined with supply, of strip material} [2013-01]
B21C 37/127
. . .
{Tube treating or manipulating combined with or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off} [2013-01]
B21C 37/128
. . .
{Control or regulating devices} [2013-01]
B21C 37/14
. .
Making tubes from double flat material [2013-01]
B21C 37/15
. .
Making tubes of special shape; Making tube fittings {(B21C 37/0803, B21C 37/104, B21C 37/124, take precedence)} [2013-01]
B21C 37/151
. . .
{Making tubes with multiple passages} [2013-01]
B21C 37/152
. . .
{Making rifle and gunbarrels} [2013-01]
B21C 37/153
. . . .
{Making tubes with inner- and/or outer guides} [2013-01]
B21C 37/154
. . .
{Making multi-wall tubes} [2013-01]
B21C 37/155
. . .
{Making tubes with non circular section (B21C 37/151, B21C 37/154 take precedence)} [2016-11]
B21C 37/156
. . .
{Making tubes with wall irregularities (B21C 37/20, B21C 37/22 take precedence)} [2013-01]
B21C 37/157
. . . .
{Perforations} [2013-01]
B21C 37/158
. . . .
{Protrusions, e.g. dimples} [2013-01]
B21C 37/16
. . .
Making tubes with varying diameter in longitudinal direction [2013-01]
B21C 37/18
. . . .
conical tubes [2013-01]
B21C 37/185
. . . . .
{starting from sheet material} [2013-01]
B21C 37/20
. . .
Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies {; Making tubes with angled walls, ribbed tubes and tubes with decorated walls} [2017-08]
B21C 37/202
. . . .
{with guides parallel to the tube axis} [2013-01]
B21C 37/205
. . . .
{with annular guides} [2013-01]
B21C 37/207
. . . .
{with helical guides} [2013-01]
B21C 37/22
. . .
Making finned or ribbed tubes by fixing strip or like material to tubes [2021-01]
B21C 37/225
. . . .
{longitudinally-ribbed tubes} [2013-01]
B21C 37/24
. . . .
annularly-ribbed tubes [2013-01]
B21C 37/26
. . . .
helically-ribbed tubes [2013-01]
B21C 37/28
. . .
Making tube fittings for connecting pipes, e.g. U-pieces [2013-01]
B21C 37/283
. . . .
{Making U-pieces (B21C 37/286 takes precedence)} [2013-01]
B21C 37/286
. . . .
{starting from sheet material} [2013-01]
B21C 37/29
. . . .
Making branched pieces, e.g. T-pieces [2013-01]
B21C 37/292
. . . . .
{Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall} [2013-01]
B21C 37/294
. . . . .
{Forming collars by compressing a fluid or a yieldable or resilient mass in the tube} [2013-01]
B21C 37/296
. . . . .
{Making branched pieces starting from strip material; Making branched tubes by securing a secondary tube in an opening in the undeformed wall of a principal tube} [2013-01]
B21C 37/298
. . . . .
{Forming collars by flow-drilling (flow drilling B21J 5/066)} [2013-01]
B21C 37/30
. .
Finishing tubes, e.g. sizing, burnishing [2013-01]
B21C 43/00
Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass [2013-01]
B21C 43/02
.
combined with or specially adapted for use in connection with drawing or winding machines or apparatus [2013-01]
B21C 43/04
. .
Devices for de-scaling wire or like flexible work [2013-01]
Auxiliary operation used in connection with metal working without essentially removing material [2013-01]
B21C 45/00
Separating mandrels from work or vice versa [2016-08]
B21C 47/00
Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only (coiling wire into particular forms B21F 3/00) [2021-01]
B21C 47/003
.
{Regulation of tension or speed; Braking} [2013-01]
B21C 47/006
.
{winding-up or winding-off several parallel metal bands} [2013-01]
B21C 47/02
.
Winding-up or coiling [2013-01]
B21C 47/04
. .
on or in reels or drums, without using a moving guide [2021-01]
B21C 47/045
. . .
{in rotating drums} [2013-01]
B21C 47/06
. . .
with loaded rollers, bolts, or equivalent means holding the material on the reel or drum [2013-01]
B21C 47/063
. . . .
{with pressure rollers only} [2013-01]
B21C 47/066
. . . .
{with belt wrappers only} [2013-01]
B21C 47/08
. .
without making use of a reel or drum, the first turn being formed by a stationary guide [2013-01]
B21C 47/10
. .
by means of a moving guide [2013-01]
B21C 47/12
. . .
the guide moving parallel to the axis of the coil (B21C 47/14 takes precedence) [2013-01]
B21C 47/14
. . .
by means of a rotating guide, e.g. laying the material around a stationary reel or drum [2013-01]
B21C 47/143
. . . .
{the guide being a tube} [2013-01]
B21C 47/146
. . . .
{Controlling or influencing the laying pattern of the coils} [2013-01]
B21C 47/16
.
Unwinding or uncoiling [2013-01]
B21C 47/18
. .
from reels or drums [2013-01]
B21C 47/20
. . .
the unreeled material moving transversely to the tangent line of the drum, e.g. axially, radially [2013-01]
B21C 47/22
. .
Unwinding coils without reels or drums [2013-01]
B21C 47/24
.
Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer [2013-01]
B21C 47/242
. .
{Devices for swinging the coil from horizontal to vertical, or vice versa} [2013-01]
B21C 47/245
. .
{Devices for the replacement of full reels by empty reels or vice versa, without considerable loss of time} [2013-01]
B21C 47/247
. .
{Joining wire or band ends} [2013-01]
B21C 47/26
.
Special arrangements with regard to simultaneous or subsequent treatment of the material [2013-01]
B21C 47/262
. .
{Treatment of a wire, while in the form of overlapping non-concentric rings} [2013-01]
B21C 47/265
. .
{"helicofil" systems} [2013-01]
B21C 47/267
. .
{Scrap treatment} [2013-01]
B21C 47/28
.
Drums or other coil-holders [2021-01]
B21C 47/30
. .
expansible or contractible [2013-01]
B21C 47/32
.
Tongs or gripping means specially adapted for reeling operations [2013-01]
B21C 47/323
. .
{Slits or pinces on the cylindrical wall of a reel or bobbin, adapted to grip the end of the material being wound} [2013-01]
B21C 47/326
. .
{Devices for pressing the end of the material being wound against the cylindrical wall of the reel or bobbin} [2013-01]
B21C 47/34
.
Feeding or guiding devices not specially adapted to a particular type of apparatus [2013-01]
B21C 47/3408
. .
{for monitoring the lateral position of the material} [2013-01]
B21C 47/3416
. . .
{with lateral edge contact} [2013-01]
B21C 47/3425
. . .
{without lateral edge contact} [2013-01]
B21C 47/3433
. .
{for guiding the leading end of the material, e.g. from or to a coiler} [2013-01]
B21C 47/3441
. . .
{Diverting the leading end, e.g. from main flow to a coiling device} [2013-01]
B21C 47/345
. .
{for monitoring the tension or advance of the material} [2013-01]
B21C 47/3458
. . .
{Endlessly revolving chain systems (metal drawing B21C 1/30)} [2013-01]
B21C 47/3466
. .
{by using specific means} [2013-01]
B21C 47/3475
. . .
{Fluid pressure or vacuum} [2013-01]
B21C 47/3483
. . .
{Magnetic field} [2013-01]
B21C 47/3491
. . .
{Brushes} [2013-01]
B21C 49/00
Devices for temporarily accumulating material [2013-01]
B21C 51/00
Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F [2016-05]
B21C 51/005
.
{Marking devices} [2013-01]
B21C 99/00
Subject matter not provided for in other groups of this subclass [2013-01]