(0)B21C:2/2:
IPC6
SECTION B - PERFORMING OPERATIONS; TRANSPORTING
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,...
B21C
3/3
<<   >>   B21C031/00 - B21C049/00  

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/ 00 Control devices, e.g. for regulating the pressing speed or temperature of metal ( B 21 C 25/08 takes precedence); Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses (measuring devices of more general interest within subclass B 21 C, see group B 21 C 51/00)
 

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/ 00 Feeding extrusion presses with metal to be extruded

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/ 02 • the metal being in liquid form  
 

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/ 00 Removing work or waste from extruding presses; Drawing-off extruded work (in connection with the extruding of bent tubes or rods B 21 C 23/12); Cleaning dies, ducts, containers, or mandrels [2]

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/ 02 • Removing or drawing-off work  

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/ 03 • • Straightening the work (metal straightening in general B 21 D)  

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/ 04 • Cutting-off or removing waste  

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/ 06 • Cleaning dies, ducts, containers or mandrels [2]  
 

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/ 00 Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for (by rolling B 21 B; by working or processing semi-finished sheet metal, profiles, tubes, or wire B 21 D, B 21 F; by casting B 22; by material-removing machine tools B 23; by welding, e.g. cladding or plating, B 23 K; by grinding or polishing B 24; by electroforming C 25 D 1/00; by drawing or extruding, see the relevant groups); Manufacture of tubes of special shape [2]

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/ 02 • of sheets  

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/ 04 • of bars or wire  

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/ 06 • of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes (bending sheets for making tubes B 21 D 5/00; seaming by folding B 21 D 39/02)  

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/ 08 • • Making tubes with welded or soldered seams (involving only a soldering or welding operation B 23 K)  

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/ 083 • • • Supply, or operations combined with supply, of strip material  

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/ 087 • • • using rods or strips of soldering material  

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/ 09 • • • of coated strip material  

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/ 10 • • Making tubes with riveted seams  

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/ 12 • • Making tubes or metal hoses with helically arranged seams  

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/ 14 • • Making tubes from doubled flat material  

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/ 15 • • Making tubes of special shape; Making the fittings  

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/ 16 • • • Making tubes with varying diameter in longitudinal direction  

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/ 18 • • • • conical tubes  

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/ 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  

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/ 22 • • • Making finned or ribbed tubes by fixing strip or like material to tubes (making heat exchangers B 21 D 53/02)  

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/ 24 • • • • annularly-ribbed tubes  

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/ 26 • • • • helically-ribbed tubes  

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/ 28 • • • Making tube fittings for connecting pipes, e.g. U-pieces  

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/ 29 • • • • Making branched pieces, e.g. T-pieces  

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/ 30 • • Finishing tubes, e.g. sizing, burnishing  
 

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/ 00 Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass

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/ 02 • combined with or specially adapted for use in connection with drawing or winding machines or apparatus  

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/ 04 • • Devices for de-scaling wire or like flexible work  

Auxiliary operations used in connection with metal working without essentially removing material
 

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/ 00 Separating mandrels from work or vice versa
 

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/ 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 B 21 F 3/00; hot coilers in connection with heat-treatment apparatus C 21 D 9/68)

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/ 02 • Winding-up or coiling  

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/ 04 • • on or in reels or drums, without using a moving guide (reels or drums B 21 C 47/28)  

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/ 06 • • • with loaded rollers, bolts, or equivalent means holding the material on the reel or drum  

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/ 08 • • without making use of a reel or drum, the first turn being formed by a stationary guide  

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/ 10 • • by means of a moving guide  

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/ 12 • • • the guide moving parallel to the axis of the coil (B 21 C 47/14 takes precedence)  

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/ 14 • • • by means of a rotating guide, e.g. laying the material around a stationary reel or drum  

47
/ 16 • Unwinding or uncoiling  

47
/ 18 • • from reels or drums  

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/ 20 • • • the unreeled material moving transversely to the tangent line of the drum, e.g. axially, radially  

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/ 22 • • Unwinding coils without reels or drums  

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/ 24 • Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer  

47
/ 26 • Special arrangements with regard to simultaneous or subsequent treatment of the material  

47
/ 28 • Drums or other coil-holders (gripping means B 21 C 47/32)  

47
/ 30 • • expansible or contractible  

47
/ 32 • Tongs or gripping means specially adapted for reeling operations  

47
/ 34 • Feeding or guiding devices not specially adapted to a particular type of apparatus  
 

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/ 00 Devices for temporarily accumulating material
 

 51
/ 00 Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B 21 B to B 21 F

 

 

 
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