IPC 6 English version B21B 31/00-B21B 47/04

B21B03100-B21B04704

SECTION B– PERFORMING OPERATIONS; TRANSPORTING

B 21

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B 22; shearing B 23 D; working of metal by the action of a high concentration of electric current B 23 H; soldering, welding, flame-cutting B 23 K; other working of metal B 23 P; punching sheet material in general B 26 F; processes for changing of physical properties of metals C 21 D, C 22 F; electroforming C 25 D 1/00)

B 21 B

ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B 21, see B 21 C; bending by rolling B 21 D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B 21 H; pressure welding by means of a rolling mill B 23 K 20/04)

31/

Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames

31/

Rolling stand frames; Roll mountings

31/

with tie rods, e.g. prestressed tie rods

31/

Fastening stands or frames to foundation, e.g. to the sole plate (in general F 16 M)

31/

Adaptation of roll bearings (bearings in general F 16 C) [2]

31/

Interchanging rolls, roll mountings, or stand frames [2]

31/

by horizontally displacing

31/

by vertically displacing

31/

by pivotally displacing

31/

Adjusting rolls (control devices B 21 B 37/00)

31/

by moving rolls axially

31/

by moving rolls perpendicularly to roll axis

31/

mechanically

31/

by screws

31/

Adjusting eccentrically-mounted roll bearings

31/

by toggle-lever mechanisms

31/

by wedges or their equivalent

31/

by liquid pressure

31/

(transferred to B 21 B 38/10)

33/

Safety devices not otherwise provided for (safety devices in general F 16 P); Breaker blocks; Devices for freeing jammed rolls [2]

33/

Preventing fracture of rolls [2]

35/

Drives for metal-rolling mills

35/

for continuously-operating mills (B 21 B 35/10, B 21 B 35/12 take precedence)

35/

each stand having its own motor or motors

35/

for non-continuously-operating mills or for single stands (B 21 B 35/10, B 21 B 35/12 take precedence)

35/

for reversing rolling mills

35/

Driving arrangements for rolls which have only a low-power drive; Driving arrangements for rolls which receive power from the shaft of another roll [2]

35/

Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor

35/

Couplings, driving spindles, or spindle carriers specially adapted for or specially arranged in metal-rolling mills (couplings or shafts in general F 16)

37/

Control devices or methods specially adapted for metal-rolling mills or the work produced thereby (methods or devices for measuring specially adapted for metal-rolling mills B 21 B 38/00)

37/

(transferred to B 21 B 37/16 to B 21 B 37/78)

37/

(transferred to B 21 B 37/24)

37/

Control of thickness, width, diameter or other transverse dimensions (B 21 B 37/58 takes precedence) [6]

37/

Automatic gauge control [6]

37/

in tandem mills [6]

37/

Lateral spread control; Width control, e.g. by edge rolling [6]

37/

Automatic variation of thickness according to a predetermined programme [6]

37/

for obtaining one strip having successive lengths of different constant thickness [6]

37/

Control of flatness or profile during rolling of strip, sheets or plates [6]

37/

using roll camber control [6]

37/

by cooling, heating or lubricating the rolls [6]

37/

by hydraulic expansion of the rolls [6]

37/

by radial displacement of the roll sleeve on a stationary roll beam by means of hydraulic supports [6]

37/

using roll bending (B 21 B 37/42 takes precedence) [6]

37/

using axial shifting of the rolls (B 21 B 37/42 takes precedence) [6]

37/

using a combination of roll bending and axial shifting of the rolls [6]

37/

using heating, lubricating or water-spray cooling of the product [6]

37/

Roll speed or drive motor control (B 21 B 37/52, B 21 B 37/60 take precedence) [6]

37/

Tension control; Compression control [6]

37/

by looper control [6]

37/

by drive motor control [6]

37/

including coiler drive control, e.g. reversing mills [6]

37/

Elongation control [6]

37/

Roll-force control; Roll-gap control [6]

37/

by control of a motor which drives an adjusting screw [6]

37/

by control of a hydraulic adjusting device [6]

37/

Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands [6]

37/

Roll eccentricity compensation systems [6]

37/

Camber or steering control for strip, sheets or plates, e.g. preventing meandering [6]

37/

Length control (B 21 B 37/56 takes precedence) [6]

37/

Rear end control; Front end control [6]

37/

Temperature control, e.g. by cooling or heating the rolls or the product (B 21 B 37/32, B 21 B 37/44 take precedence) [6]

37/

Cooling control on the run-out table [6]

37/

Control of tube rolling [6]

38/

Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product [6]

38/

for measuring flatness or profile of strips [6]

38/

for measuring thickness, width, diameter or other transverse dimensions of the product [6]

38/

for measuring tension or compression [6]

38/

for measuring roll-force [6]

38/

for measuring roll-gap, e.g. pass indicators [6]

38/

for measuring roll camber [6]

39/

Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills (guiding, conveying, or accumulating easily-flexible work in loops or curves B 21 B 41/00; specially associated with cooling-beds B 21 B 43/00; conveying or transporting in general B 65 G)

39/

Feeding or supporting work; Braking or tensioning arrangements

39/

Lifting or lowering work for conveying purposes, e.g. tilting tables arranged immediately in front of or behind the pass (turn-over or like manipulating means as such B 21 B 39/20)

39/

Pushing or forcing work into pass

39/

Braking or tensioning arrangements

39/

Arrangement or installation of feeding rollers in rolling stands

39/

Arrangement or installation of roller tables in relation to a roll stand

39/

Guiding, positioning or aligning work (B 21 B 43/12 takes precedence; guides in which work is subjected to permanent internal twisting B 21 B 15/02)

39/

immediately before entering or after leaving the pass

39/

Switches for directing work in metal-rolling mills or trains

39/

Revolving, turning-over, or like manipulation of work (guides in which work is subjected to permanent internal twisting B 21 B 15/02)

39/

by tipping, e.g. by lifting one side by levers or wedges (B 21 B 39/26, B 21 B 39/28 take precedence)

39/

by tongs or grippers

39/

by members, e.g. grooved, engaging opposite sides of the work and moved relatively to each other to revolve the work

39/

by means of guide members shaped to revolve the work during its passage

39/

by lodging it in a rotating ring manipulator or ring segment manipulator

39/

Devices specially adapted for turning sheets

39/

Arrangements or constructional combinations specifically designed to perform functions covered by more than one of groups B 21 B 39/02, B 21 B 39/14, B 21 B 39/20

41/

Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters

41/

Returning work to repeat the pass or passes

41/

above or underneath the rolling stand or rolls

41/

in which the direction of movement of the work is turned through approximately 180°

41/

without overall change in the general direction of movement of the work

41/

Loop deflectors

41/

Arrangements of interest only with respect to provision for indicating or controlling operations

43/

Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed (conveying means in general B 65 G)

43/

Cooling beds comprising rakes or bars (B 21 B 43/10 takes precedence) [2]

43/

Cooling beds comprising rolls or worms

43/

Cooling beds comprising carriages (B 21 B 43/08 takes precedence)

43/

Cooling beds comprising revolving drums or recycling chains

43/

Cooling beds with other work-shifting elements projecting through the bed

43/

Devices for positioning workpieces "flushed", i.e. with all their axial ends arranged in line on cooling beds or on co-operating conveyers [2]

45/

Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills (B 21 B 15/00 takes precedence; technical features of scaling-off devices B 21 C 43/00)

45/

for lubricating, cooling, or cleaning

45/

for de-scaling

45/

of strip material (B 21 B 45/08 takes precedence)

45/

hydraulically

47/

Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal (soaking pits C 21 D 9/70) [2]

47/

for folding sheets before rolling

47/

for separating layers after rolling

B21 - B21B 29/00