Skip over navigation
Main CPC Sections USPC Class Numbers & Titles USPC Class Numbers Classification Search Page Contacts Help
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)
Printable version [PDF]
CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
B21B
ROLLING OF METAL ( auxiliary operations used in connection with metal-working operations covered in B21 , see B21C ; bending by rolling B21D ; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H ; pressure welding by means of a rolling mill B23K 20/04 )
NOTE
-
In this subclass, the following terms or expressions are used with the meanings indicated:- "rolling" means rolling operations in which plastic deformations occur;- "continuous process" means a process employing a mill train designed to have the workpiece enter one pair of rolls before leaving the preceding pair.

Collapse
B21B 1/00
Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section ( B21B 17/00 to B21B 23/00 take precedence; with respect to composition of material to be rolled B21B 3/00 ; extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B 5/00 ; metal-rolling stands as units B21B 13/00 ; continuous casting into moulds having walls formed by moving rolls B22D 11/06 ) ; Sequence of operations in milling trains ; Layout of rolling-mill plant, e.g. grouping of stands ; Succession of passes or of sectional pass alternations
Collapse
B21B 1/02
.
for rolling heavy work, e.g. ingots, slabs,
{
blooms
}
 billets, in which the cross-sectional form is unimportant
{
Rolling combined with forging or pressing
}
B21B 1/024
. .
{
Forging or pressing ( forging or pressing devices as units B21B 15/0035 )
}
B21B 1/026
. .
{
Rolling
}
B21B 1/04
. .
in a continuous process
B21B 1/06
. .
in a non-continuous process,
{
e.g. triplet mill, reversing mill
}
Collapse
B21B 1/08
.
for rolling
{
structural sections, i.e.
}
 work of special cross-section, e.g. angle steel ( rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H 8/00 )
B21B 1/0805
. .
{
Flat bars, i.e. having a substantially rectangular cross-section
}
B21B 1/0815
. .
{
from flat-rolled products, e.g. by longitudinal shearing
}
B21B 1/082
. .
Piling sections having lateral edges specially adapted for interlocking with each other in order to build a wall
Collapse
B21B 1/085
. .
Rail sections
B21B 1/0855
. . .
{
Rerolling or processing worn or discarded rail sections
}
Collapse
B21B 1/088
. .
H- or I-sections
B21B 1/0883
. . .
{
using forging or pressing devices
}
B21B 1/0886
. . .
{
using variable-width rolls
}
B21B 1/09
. .
L-sections
B21B 1/092
. .
T-sections
B21B 1/095
. .
U-or channel sections
B21B 1/098
. .
Z-sections
WARNING
-
Groups B21B 1/098 is not complete. See also other subgroups of B21B 1/08

B21B 1/10
. .
in a single two-high or universal rolling mill
{
stand ( B21B 1/085 to B21B 1/098 take precedence )
}
B21B 1/12
. .
in a continuous process,
{
i.e. without reversing stands ( B21B 1/085 to B21B 1/098 take precedence )
}
B21B 1/14
. .
in a non-continuous process,
{
i.e. at least one reversing stand ( B21B 1/085 to B21B 1/098 take prececence )
}
Collapse
B21B 1/16
.
for rolling
{
wire rods, bars, merchant bars, rounds
}
 wire or material of like small cross-section
B21B 1/163
. .
{
Rolling or cold-forming of concrete reinforcement bars or wire ( reinforcement bars per se E04C 5/03 ) ; Rolls therefor
}
B21B 1/166
. .
{
Rolling wire into sections or flat ribbons
}
B21B 1/18
. .
in a continuous process
B21B 1/20
. .
in a non-continuous process, ( e.g. skew rolling, i.e. planetary cross rolling )
Collapse
B21B 1/22
.
for rolling
{
plates, strips,
}
 bands or sheets of indefinite length ( B21B 1/42 takes precedence )
B21B 1/222
. .
{
in a rolling-drawing process; in a multi-pass mill
}
B21B 1/224
. .
{
Edge rolling of flat products
}
B21B 1/227
. .
{
Surface roughening or texturing
}
Collapse
B21B 1/24
. .
in a continuous
{
or semi-continuous
}
 process
{
( B21B 1/224 takes precedence )
}
Collapse
B21B 1/26
. . .
by hot-rolling,
{
e.g. Steckel hot mill
}
B21B 1/265
. . . .
{
and by compressing or pushing the material in rolling direction
}
B21B 1/28
. . .
by cold-rolling,
{
e.g. Steckel cold mill
}
Collapse
B21B 1/30
. .
in a non-continuous process
{
( B21B 1/224 takes precedence )
}
Collapse
B21B 1/32
. . .
in reversing
{
single stand
}
 mills, e.g. with intermediate storage reels for accumulating work
B21B 1/34
. . . .
by hot-rolling
B21B 1/36
. . . .
by cold-rolling
B21B 1/38
.
for rolling sheets of limited length, e.g. folded sheets, superimposed sheets,
{
pack rolling
}
 ( B21B 1/40 takes precedence; folding sheets before, or separating layers after, rolling B21B 47/00 )
B21B 1/40
.
for rolling foils which present special problems, e.g. because of thinness
B21B 1/42
.
for step-by-step or planetary rolling ( making tubes by pilgrim-step rolling B21B 21/00 )
Collapse
B21B 1/46
.
for rolling metal immediately subsequent to continuous casting ( metal-rolling stands B21B 13/22 ; continuous casting B22D 11/00 , e.g. into moulds with rolls B22D 11/06 )
B21B 1/463
. .
{
in a continuous process, i.e. the cast not being cut before rolling
}
B21B 1/466
. .
{
in a non-continuous process, i.e. the cast being cut before rolling
}
Collapse
B21B 3/00
Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
{
Rolling of aluminium, copper, zinc or other non-ferrous metals
}
 ( altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C21D , C22F )
B21B 3/003
.
{
Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
}
B21B 3/02
.
Rolling special iron alloys,
{
e.g. stainless steel
}
B21B 5/00
Extending closed shapes of metal bands by rolling ( manufacture of circular shapes, e.g. wheel rims, B21H 1/06 )
B21B 9/00
Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work ; Special measures for removing fumes from rolling mills
B21B 11/00
Subsidising the rolling process by subjecting rollers or work to vibrations,
{
e.g. ultrasonic vibrations
}
Collapse
B21B 13/00
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories ( B21B 17/00 to B21B 23/00 take precedence; details, component parts, accessories, auxiliary means, procedures in connection with metal rolling, see the relevant groups )
B21B 13/001
.
{
Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
}
B21B 13/005
.
{
Cantilevered roll stands
}
B21B 13/008
.
{
Skew rolling stands, e.g. for rolling rounds
}
Collapse
B21B 13/02
.
with axes of rolls arranged horizontally
B21B 13/023
. .
{
the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
}
B21B 13/04
. .
Three-high arrangement
B21B 13/06
.
with axes of rolls arranged vertically,
{
e.g. edgers
}
Collapse
B21B 13/08
.
with differently-directed roll axes, e.g. for the so-called "universal" rolling process
Collapse
B21B 13/10
. .
all axes being arranged in one plane
B21B 13/103
. . .
{
for rolling bars, rods or wire
}
B21B 13/12
. .
axes being arranged in different planes
Collapse
B21B 13/14
.
having counter-pressure devices acting on rolls to inhibit deflection of same under load;
{
Back-up rolls
}
 ( counter-pressure devices as such B21B 29/00 )
B21B 13/142
. .
{
by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
}
B21B 13/145
. .
{
Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product
}
B21B 13/147
. .
{
Cluster mills, e.g. Sendzimir mills , Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
}
B21B 13/16
.
with alternatively operative rolls,
{
e.g. revolver stands, turret mills
}
Collapse
B21B 13/18
.
for step-by-step or planetary rolling;
{
pendulum mills
}
 ( methods B21B 1/42 ; making tubes by pilgrim-step rolling B21B 21/00 )
B21B 13/20
. .
for planetary rolling
B21B 13/22
.
for rolling metal immediately subsequent to continuous casting,
{
i.e. in-line rolling of steel
}
 ( methods therefor B21B 1/46 ; continuous casting B22D 11/00 , e.g. into moulds with rolls B22D 11/06 )
Collapse
B21B 15/00
Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 15/0007
.
{
Cutting or shearing the product
}
Collapse
B21B 15/0035
.
{
Forging or pressing devices as units
}
B21B 15/0042
. .
{
Tool changers
}
B21B 15/005
. .
{
Lubricating, cooling or heating means
}
B21B 15/0085
.
{
Joining ends of material to continuous strip, bar or sheet
}
B21B 15/02
.
in which work is subjected to permanent internal twisting, e.g. for producing reinforcement bars for concrete
Collapse
Guide Heading:
Rolling methods or mills specially designed for making or processing tubes ( control of tube rolling B21B 37/78 )
Collapse
B21B 17/00
Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
Collapse
B21B 17/02
.
with mandrel,
{
i.e. the mandrel rod contacts the rolled tube over the rod length
}
 ( B21B 17/08 takes precedence )
B21B 17/04
. .
in a continuous process
B21B 17/06
. .
in a discontinuous process
Collapse
B21B 17/08
.
with mandrel having one or more protrusions,
{
i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
}
B21B 17/10
. .
in a continuous process
B21B 17/12
. .
in a discontinuous process,
{
e.g. plug-rolling mills
}
B21B 17/14
.
without mandrel,
{
e.g. stretch-reducing mills
}
Collapse
B21B 19/00
Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work ( straightening by rollers B21D )
Collapse
B21B 19/02
.
the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling
{
Diescher mills, Stiefel disc piercers, Stiefel rotary piercers
}
B21B 19/04
. .
Rolling basic material of solid, i.e. non-hollow, structure ; Piercing,
{
e.g. rotary piercing mills
}
Collapse
B21B 19/06
. .
Rolling hollow basic material,
{
e.g. Assel mills
}
 ( B21B 19/04 takes precedence; separating work from mandrel B21C 45/00 )
B21B 19/08
. . .
Enlarging tube diameter
B21B 19/10
. . .
Finishing, e.g. smoothing, sizing,
{
reeling
}
Collapse
B21B 19/12
.
the axes of the rollers being arranged essentially parallel to the axis of the work
B21B 19/14
. .
Rolling tubes by means of additional rollers arranged inside the tubes
B21B 19/16
. .
Rolling tubes without additional rollers arranged inside the tubes
Collapse
B21B 21/00
Pilgrim-step tube-rolling,
{
i.e. pilger mills
}
B21B 21/005
.
{
with reciprocating stand, e.g. driving the stand
}
B21B 21/02
.
Rollers therefor
Collapse
B21B 21/04
.
Pilgrim-step feeding mechanisms ( B21B 21/06 takes precedence )
B21B 21/045
. .
{
for reciprocating stands
}
Collapse
B21B 21/06
.
Devices for revolving work between the steps
B21B 21/065
. .
{
for reciprocating stands
}
B21B 23/00
Tube-rolling not restricted to methods provided for in only one of groups B21B 17/00 , B21B 19/00 , B21B 21/00 , e.g. combined processes
{
planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
}
 ( B21B 25/00 takes precedence )
Collapse
B21B 25/00
Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B 17/00 ; Accessories or auxiliary means therefor;
{
Construction of, or alloys for, mandrels or plugs
}
B21B 25/02
.
Guides, supports, or abutments for mandrels, e.g. carriages
{
or steadiers
}
 ; Adjusting devices for mandrels
B21B 25/04
.
Cooling or lubricating mandrels during operation
B21B 25/06
.
Interchanging mandrels,
{
fixing plugs on mandrel rods or cooling during interchanging mandrels ( separating tubes from mandrels B21C 45/00 )
}
Collapse
B21B 27/00
Rolls,
{
roll alloys or roll fabrication
}
 ( shape of working surfaces required by special processes B21B 1/00 ) ; Lubricating, cooling or heating rolls while in use
B21B 27/005
.
{
Rolls with a roughened or textured surface; Methods for making same
}
Collapse
B21B 27/02
.
Shape or construction of rolls ( for rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H 8/02 )
{
( B21B 27/005 takes precedence )
}
B21B 27/021
. .
{
Rolls for sheets or strips
}
Collapse
B21B 27/024
. .
{
Rolls for bars, rods, rounds, tubes, wire or the like
}
B21B 27/025
. . .
{
Skew rolls
}
B21B 27/027
. .
{
Vertical rolls
}
B21B 27/028
. .
{
Variable-width rolls
}
Collapse
B21B 27/03
. .
Sleeved rolls
{
( B21B 27/028 takes precedence )
}
B21B 27/032
. . .
{
Rolls for sheets or strips
}
Collapse
B21B 27/035
. . .
{
Rolls for bars, rods, rounds, tubes, wire or the like
}
B21B 27/037
. . . .
{
Skew rolls
}
Collapse
B21B 27/05
. . .
with deflectable sleeves
B21B 27/055
. . . .
{
with sleeves radially deflectable on a stationary beam by means of hydraulic supports ( in general F16C 13/00 ; for paper-making machines D21G 1/00 ; regulating devices therefor B21B 37/36 )
}
Collapse
B21B 27/06
.
Lubricating, cooling or heating rolls
B21B 27/08
. .
internally
Collapse
B21B 27/10
. .
externally
B21B 27/106
. . .
{
Heating the rolls
}
Collapse
B21B 28/00
Maintaining rolls or rolling equipment in effective condition ( lubricating, cooling or heating rolls while in use B21B 27/06 )
Collapse
B21B 28/02
.
Maintaining rolls in effective condition, e.g. reconditioning
B21B 28/04
. .
while in use, e.g. polishing
{
or grinding while the rolls are in their stands
}
B21B 29/00
Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls;
{
Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends ( control devices responsive to roll bending B21B 37/38 )
}
Collapse
B21B 31/00
Rolling stand structures ; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
Collapse
B21B 31/02
.
Rolling stand frames
{
or housings
}
 ; Roll mountings;
{
Roll chocks
}
B21B 31/028
. .
{
Prestressing of rolls or roll mountings in stand frames
}
B21B 31/04
. .
with tie rods
{
in frameless stands
}
 , e.g. prestressed tie rods
B21B 31/06
. .
Fastening stands or frames to foundation, e.g. to the sole plate ( in general F16M )
Collapse
B21B 31/07
.
Adaptation of roll
{
neck
}
 bearings ( bearings in general F16C )
B21B 31/074
. .
{
Oil film bearings, e.g. "Morgoil" bearings
}
B21B 31/076
. .
{
Cooling; Lubricating roller bearings
}
B21B 31/078
. .
{
Sealing devices ( Sealings in general F16J 15/00 )
}
Collapse
B21B 31/08
.
Interchanging rolls, roll mountings, or stand frames,
{
e.g. using C-hooks; Replacing roll chocks on roll shafts
}
Collapse
B21B 31/10
. .
by horizontally displacing,
{
i.e. horizontal roll changing
}
B21B 31/103
. . .
{
Manipulators or carriages therefor
}
B21B 31/106
. . .
{
Vertical displacement of rolls or roll chocks during horizontal roll changing
}
B21B 31/12
. .
by vertically displacing
B21B 31/14
. .
by pivotally displacing
Collapse
B21B 31/16
.
Adjusting
{
or positioning
}
 rolls ( control devices B21B 37/00 )
Collapse
B21B 31/18
. .
by moving rolls axially
B21B 31/185
. . .
{
and by crossing rolls
}
Collapse
B21B 31/20
. .
by moving rolls perpendicularly to roll axis
B21B 31/203
. . .
{
Balancing rolls
}
Collapse
B21B 31/22
. . .
mechanically,
{
e.g. by thrust blocks, inserts for removal
}
B21B 31/24
. . . .
by screws
B21B 31/26
. . . .
Adjusting eccentrically-mounted roll bearings
B21B 31/28
. . . .
by toggle-lever mechanisms
B21B 31/30
. . . .
by wedges or their equivalent
B21B 31/32
. . .
by liquid pressure,
{
e.g. hydromechanical adjusting
}
Collapse
B21B 33/00
Safety devices not otherwise provided for ( safety devices in general F16P ) ; Breaker blocks ; Devices for freeing jammed rolls
{
for handling cobbles; Overload safety devices
}
B21B 33/02
.
Preventing fracture of rolls
Collapse
B21B 35/00
Drives for metal-rolling mills,
{
e.g. hydraulic drives
}
Collapse
B21B 35/02
.
for continuously-operating mills ( B21B 35/10 , B21B 35/12 take precedence )
B21B 35/025
. .
{
for stretch-reducing of tubes
}
B21B 35/04
. .
each stand having its own motor or motors
Collapse
B21B 35/06
.
for non-continuously-operating mills or for single stands ( B21B 35/10 , B21B 35/12 take precedence )
B21B 35/08
. .
for reversing rolling mills
B21B 35/10
.
Driving arrangements for rolls which have only a low-power drive ; Driving arrangements for rolls which receive power from the shaft of another roll
B21B 35/12
.
Toothed-wheel gearings specially adapted for metal-rolling mills ; Housings or mountings therefor
Collapse
B21B 35/14
.
Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills ( couplings or shafts in general F16 )
B21B 35/141
. .
{
Rigid spindle couplings, e.g. coupling boxes placed on roll necks ( rigid couplings in general F16D 1/00 )
}
Collapse
B21B 35/142
. .
{
Yielding spindle couplings; Universal joints for spindles ( yielding couplings in general F16D 3/00 )
}
Collapse
B21B 35/143
. . .
{
having slidably-interengaging teeth, e.g. gear-type couplings ( universal joints with the coupling parts having slidably-interengaging teeth, in general, F16D 3/18 )
}
B21B 35/144
. . . .
{
Wobbler couplings
}
Collapse
B21B 35/145
. . .
{
Hooke`s joints or the like with each coupling part pivoted with respect to an intermediate member ( Hooke`s joints in general F16D 3/26 )
}
B21B 35/146
. . . .
{
Tongue and slipper joints ( tongue and slipper joints in general F16D 3/265 )
}
B21B 35/147
. .
{
Lubrication of spindle couplings
}
B21B 35/148
. .
{
Spindle carriers or balancers
}
Collapse
B21B 37/00
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 B21B 38/00 )
B21B 37/005
.
{
Control of time interval or spacing between workpieces
}
B21B 37/007
.
{
Control for preventing or reducing vibration, chatter or chatter marks ( B21B 37/66 takes precedence )
}
Collapse
B21B 37/16
.
Control of thickness, width, diameter or other transverse dimensions ( B21B 37/58 takes precedence )
B21B 37/165
. .
{
responsive mainly to the measured thickness of the product
}
Collapse
B21B 37/18
. .
Automatic gauge control
B21B 37/20
. . .
in tandem mills
B21B 37/22
. .
Lateral spread control ; Width control, e.g. by edge rolling
Collapse
B21B 37/24
. .
Automatic variation of thickness according to a predetermined programme
B21B 37/26
. . .
for obtaining one strip having successive lengths of different constant thickness
Collapse
B21B 37/28
.
Control of flatness or profile during rolling of strip, sheets or plates
Collapse
B21B 37/30
. .
using roll camber control
B21B 37/32
. . .
by cooling, heating or lubricating the rolls
B21B 37/34
. . .
by hydraulic expansion of the rolls
B21B 37/36
. . .
by radial displacement of the roll sleeve on a stationary roll beam by means of hydraulic supports
B21B 37/38
. .
using roll bending ( B21B 37/42 takes precedence )
B21B 37/40
. .
using axial shifting of the rolls ( B21B 37/42 takes precedence )
B21B 37/42
. .
using a combination of roll bending and axial shifting of the rolls
B21B 37/44
. .
using heating, lubricating or water-spray cooling of the product
B21B 37/46
.
Roll speed or drive motor control ( B21B 37/52 , B21B 37/60 take precedence )
Collapse
B21B 37/48
.
Tension control ; Compression control
B21B 37/50
. .
by looper control
Collapse
B21B 37/52
. .
by drive motor control
B21B 37/54
. . .
including coiler drive control, e.g. reversing mills
B21B 37/56
.
Elongation control
Collapse
B21B 37/58
.
Roll-force control ; Roll-gap control
{
( B21B 38/105 takes precedence )
}
B21B 37/60
. .
by control of a motor which drives an adjusting screw
B21B 37/62
. .
by control of a hydraulic adjusting device
B21B 37/64
. .
Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands
B21B 37/66
. .
Roll eccentricity compensation systems
B21B 37/68
.
Camber or steering control for strip, sheets or plates, e.g. preventing meandering
B21B 37/70
.
Length control ( B21B 37/56 takes precedence )
B21B 37/72
.
Rear end control ; Front end control
Collapse
B21B 37/74
.
Temperature control, e.g. by cooling or heating the rolls or the product ( B21B 37/32 , B21B 37/44 take precedence )
B21B 37/76
. .
Cooling control on the run-out table
B21B 37/78
.
Control of tube rolling
Collapse
B21B 38/00
Methods or devices for measuring,
{
detecting or monitoring
}
 specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
{
( Control devices or methods B21B 37/00 )
}
B21B 38/006
.
{
for measuring temperature
}
B21B 38/008
.
{
Monitoring or detecting vibration, chatter or chatter marks
}
B21B 38/02
.
for measuring flatness or profile of strips
B21B 38/04
.
for measuring thickness, width, diameter or other transverse dimensions of the product
B21B 38/06
.
for measuring tension or compression
B21B 38/08
.
for measuring roll-force
Collapse
B21B 38/10
.
for measuring roll-gap, e.g. pass indicators
B21B 38/105
. .
{
Calibrating or presetting roll-gap
}
B21B 38/12
.
for measuring roll camber
Collapse
B21B 39/00
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 B21B 41/00 ; specially associated with cooling-beds B21B 43/00 ; conveying or transporting in general B65G )
B21B 39/002
.
{
Piling, unpiling, unscrambling
}
B21B 39/004
.
{
Transverse moving
}
B21B 39/006
.
{
Pinch roll sets
}
B21B 39/008
.
{
Rollers for roller conveyers ( roller-ways in general B65G 13/00 , B21B 39/00 )
}
Collapse
B21B 39/02
.
Feeding or supporting work ; Braking or tensioning arrangements,
{
e.g. threading arrangements
}
B21B 39/04
. .
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 B21B 39/20 )
B21B 39/06
. .
Pushing or forcing work into pass
Collapse
B21B 39/08
. .
Braking or tensioning arrangements
B21B 39/082
. . .
{
Bridle devices
}
B21B 39/084
. . .
{
Looper devices
}
B21B 39/086
. . .
{
Braking devices
}
B21B 39/088
. . .
{
Bumpers, stopping devices
}
B21B 39/10
. .
Arrangement or installation of feeding rollers in rolling stands
B21B 39/12
. .
Arrangement or installation of roller tables in relation to a roll stand
Collapse
B21B 39/14
.
Guiding, positioning or aligning work ( B21B 43/12 takes precedence; guides in which work is subjected to permanent internal twisting B21B 15/02 )
Collapse
B21B 39/16
. .
immediately before entering or after leaving the pass
B21B 39/165
. . .
{
Guides or guide rollers for rods, bars, rounds, tubes ( B21B 39/28 takes precedence ) ; Aligning guides
}
B21B 39/18
. .
Switches for directing work in metal-rolling mills or trains
Collapse
B21B 39/20
.
Revolving, turning-over, or like manipulation of work,
{
e.g. revolving in trio stands
}
 ( guides in which work is subjected to permanent internal twisting B21B 15/02 )
Collapse
B21B 39/22
. .
by tipping, e.g. by lifting one side by levers or wedges ( B21B 39/26 , B21B 39/28 take precedence )
B21B 39/223
. . .
{
Side-guard manipulators
}
B21B 39/226
. . .
{
Tiltable ingot chairs
}
B21B 39/24
. .
by tongs or grippers
B21B 39/26
. .
by members, e.g. grooved, engaging opposite sides of the work and moved relatively to each other to revolve the work
B21B 39/28
. .
by means of guide members shaped to revolve the work during its passage
B21B 39/30
. .
by lodging it in a rotating ring manipulator or ring segment manipulator
B21B 39/32
. .
Devices specially adapted for turning sheets
B21B 39/34
.
Arrangements or constructional combinations specifically designed to perform functions covered by more than one of groups B21B 39/02 , B21B 39/14 , B21B 39/20
Collapse
B21B 41/00
Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves ; Loop lifters
Collapse
B21B 41/02
.
Returning work to repeat the pass or passes
{
within the same stand
}
B21B 41/04
. .
above or underneath the rolling stand or rolls
B21B 41/06
.
in which the direction of movement of the work is turned through approximately 180 degrees,
{
e.g. repeaters, i.e. from one stand to another
}
Collapse
B21B 41/08
.
without overall change in the general direction of movement of the work
B21B 41/10
. .
Loop deflectors
{
( B21B 39/084 takes precedence )
}
B21B 41/12
.
Arrangements of interest only with respect to provision for indicating or controlling operations
Collapse
B21B 43/00
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 B65G )
B21B 43/003
.
{
Transfer to bed
}
B21B 43/006
.
{
Transfer from bed
}
B21B 43/02
.
Cooling beds comprising rakes
{
racks, walking beams
}
 or bars ( B21B 43/10 takes precedence )
B21B 43/04
.
Cooling beds comprising rolls or worms
B21B 43/06
.
Cooling beds comprising carriages ( B21B 43/08 takes precedence )
B21B 43/08
.
Cooling beds comprising revolving drums or recycling chains
{
or discs
}
B21B 43/10
.
Cooling beds with other work-shifting elements projecting through the bed
B21B 43/12
.
Devices for positioning workpieces "flushed", i.e. with all their axial ends arranged in line on cooling beds or on co-operating conveyers,
{
e.g. before cutting
}
Collapse
B21B 45/00
Devices for surface
{
or other
}
 treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills ( B21B 15/00 ,
{
B21B 1/227 and B21B 27/005
}
 take precedence; technical features of scaling-off devices B21C 43/00 )
B21B 45/002
.
{
Increasing friction between work and working rolls by using friction increasing substance
}
B21B 45/004
.
{
Heating the product
}
B21B 45/008
.
{
Heat shields
}
Collapse
B21B 45/02
.
for lubricating, cooling, or cleaning
{
( in particular in combination with forging or pressing devices B21B 15/005 , control of flatness or profile using lubricating or cooling B21B 37/44 )
}
Collapse
B21B 45/0203
. .
{
Cooling
}
B21B 45/0206
. . .
{
Coolants
}
Collapse
B21B 45/0209
. . .
{
Cooling devices, e.g. using gaseous coolants
}
Collapse
B21B 45/0215
. . . .
{
using liquid coolants, e.g. for sections, for tubes
}
B21B 45/0218
. . . . .
{
for strips, sheets, or plates ( B21B 45/023 , B21B 45/0233 take precedence )
}
B21B 45/0224
. . . . .
{
for wire, rods, rounds, bars ( B21B 45/023 , B21B 45/0233 take precedence )
}
B21B 45/023
. . . . .
{
by immersion in a bath
}
B21B 45/0233
. . . . .
{
Spray nozzles, Nozzle headers; Spray systems
}
Collapse
B21B 45/0239
. .
{
Lubricating
}
B21B 45/0242
. . .
{
Lubricants
}
Collapse
B21B 45/0245
. . .
{
Lubricating devices
}
Collapse
B21B 45/0248
. . . .
{
using liquid lubricants, e.g. for sections, for tubes
}
B21B 45/0251
. . . . .
{
for strips, sheets, or plates
}
B21B 45/0257
. . . . .
{
for wire, rods, rounds, bars
}
B21B 45/0263
. . . .
{
using solid lubricants
}
B21B 45/0266
. .
{
Measuring or controlling thickness of liquid films
}
Collapse
B21B 45/0269
. .
{
Cleaning
}
B21B 45/0272
. . .
{
Cleaning compositions
}
Collapse
B21B 45/0275
. . .
{
Cleaning devices
}
Collapse
B21B 45/0278
. . . .
{
removing liquids
}
B21B 45/0281
. . . . .
{
removing coolants
}
B21B 45/0284
. . . . .
{
removing lubricants
}
B21B 45/0287
. . . .
{
removing solid particles, e.g. dust, rust
}
Collapse
B21B 45/029
. . .
{
Liquid recovering devices
}
B21B 45/0293
. . . .
{
Recovering coolants
}
B21B 45/0296
. . . .
{
Recovering lubricants
}
Collapse
B21B 45/04
.
for de-scaling,
{
e.g. by brushing ( descaling of rod or wire B21C 43/04 )
}
B21B 45/06
. .
of strip material ( B21B 45/08 takes precedence )
B21B 45/08
. .
hydraulically
Collapse
B21B 47/00
Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal ( soaking pits C21D 9/70 )
B21B 47/02
.
for folding sheets before rolling
B21B 47/04
.
for separating layers after rolling
B21B 99/00
Subject matter not provided for in other groups of this subclass
Collapse
B21B 2001/00
Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section ( B21B 17/00 to B21B 23/00 take precedence; with respect to composition of material to be rolled B21B 3/00 ; extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B 5/00 ; metal-rolling stands as units B21B 13/00 ; continuous casting into moulds having walls formed by moving rolls B22D 11/06 ) ; Sequence of operations in milling trains ; Layout of rolling-mill plant, e.g. grouping of stands ; Succession of passes or of sectional pass alternations
Collapse
B21B 2001/02
.
for rolling heavy work, e.g. ingots, slabs,
{
blooms
}
 billets, in which the cross-sectional form is unimportant
{
Rolling combined with forging or pressing
}
B21B 2001/022
. .
Blooms or billets
B21B 2001/028
. .
Slabs
Collapse
B21B 2001/08
.
for rolling
{
structural sections, i.e.
}
 work of special cross-section, e.g. angle steel ( rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H 8/00 )
B21B 2001/081
. .
Roughening or texturing surfaces of structural sections, bars, rounds, wire rods
Collapse
B21B 2001/22
.
for rolling
{
plates, strips,
}
 bands or sheets of indefinite length ( B21B 1/42 takes precedence )
B21B 2001/221
. .
by cold-rolling
B21B 2001/225
. .
by hot-rolling
B21B 2001/228
. .
skin pass rolling or temper rolling
Collapse
B21B 2001/38
.
for rolling sheets of limited length, e.g. folded sheets, superimposed sheets,
{
pack rolling
}
 ( B21B 1/40 takes precedence; folding sheets before, or separating layers after, rolling B21B 47/00 )
B21B 2001/383
. .
Cladded or coated products
B21B 2001/386
. .
Plates
Collapse
B21B 2003/00
Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
{
Rolling of aluminium, copper, zinc or other non-ferrous metals
}
 ( altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C21D , C22F )
B21B 2003/001
.
Aluminium or its alloys
B21B 2003/005
.
Copper or its alloys
B21B 2003/006
.
Powder metal alloys
B21B 2003/008
.
Zinc or its alloys
Collapse
B21B 2013/00
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories ( B21B 17/00 to B21B 23/00 take precedence; details, component parts, accessories, auxiliary means, procedures in connection with metal rolling, see the relevant groups )
B21B 2013/003
.
Inactive rolling stands
B21B 2013/006
.
Multiple strand rolling mills ; Mill stands with multiple caliber rolls
Collapse
B21B 2013/02
.
with axes of rolls arranged horizontally
B21B 2013/021
. .
Twin mills
B21B 2013/025
. .
Quarto, four-high stands
B21B 2013/026
. .
Quinto, five high-stands
B21B 2013/028
. .
Sixto, six-high stands
Collapse
B21B 2013/08
.
with differently-directed roll axes, e.g. for the so-called "universal" rolling process
Collapse
B21B 2013/10
. .
all axes being arranged in one plane
B21B 2013/106
. . .
for sections, e.g. beams, rails
Collapse
B21B 2015/00
Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
Collapse
B21B 2015/0007
.
{
Cutting or shearing the product
}
B21B 2015/0014
. .
transversely to the rolling direction
B21B 2015/0021
. .
in the rolling direction
B21B 2015/0028
.
Drawing the rolled product
B21B 2015/0057
.
Coiling the rolled product
B21B 2015/0064
.
Uncoiling the rolled product
B21B 2015/0071
.
Levelling the rolled product
B21B 2015/0078
.
Extruding the rolled product
B21B 2015/0092
.
Welding in the rolling direction
Collapse
B21B 2023/00
Tube-rolling not restricted to methods provided for in only one of groups B21B 17/00 , B21B 19/00 , B21B 21/00 , e.g. combined processes
{
planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
}
 ( B21B 25/00 takes precedence )
B21B 2023/005
.
Roughening or texturig surfaces of tubes
Collapse
B21B 2027/00
Rolls,
{
roll alloys or roll fabrication
}
 ( shape of working surfaces required by special processes B21B 1/00 ) ; Lubricating, cooling or heating rolls while in use
Collapse
B21B 2027/02
.
Shape or construction of rolls ( for rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H 8/02 )
{
( B21B 27/005 takes precedence )
}
Collapse
B21B 2027/021
. .
{
Rolls for sheets or strips
}
B21B 2027/022
. . .
Rolls having tapered ends
Collapse
B21B 2027/06
.
Lubricating, cooling or heating rolls
Collapse
B21B 2027/08
. .
internally
B21B 2027/083
. . .
cooling internally
B21B 2027/086
. . .
heating internally
Collapse
B21B 2027/10
. .
externally
B21B 2027/103
. . .
cooling externally
Collapse
B21B 2031/00
Rolling stand structures ; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
Collapse
B21B 2031/02
.
Rolling stand frames
{
or housings
}
 ; Roll mountings;
{
Roll chocks
}
B21B 2031/021
. .
Integral tandem mill housings
B21B 2031/023
. .
Transverse shifting one housing
B21B 2031/025
. .
Shifting the stand in or against the rolling direction
B21B 2031/026
. .
Transverse shifting the stand
Collapse
B21B 2031/07
.
Adaptation of roll
{
neck
}
 bearings ( bearings in general F16C )
B21B 2031/072
. .
Bearing materials
Collapse
B21B 2031/16
.
Adjusting
{
or positioning
}
 rolls ( control devices B21B 37/00 )
Collapse
B21B 2031/20
. .
by moving rolls perpendicularly to roll axis
B21B 2031/206
. . .
Horizontal offset of work rolls
Collapse
B21B 2033/00
Safety devices not otherwise provided for ( safety devices in general F16P ) ; Breaker blocks ; Devices for freeing jammed rolls
{
for handling cobbles; Overload safety devices
}
B21B 2033/005
.
Cobble-freeing
Collapse
B21B 2035/00
Drives for metal-rolling mills,
{
e.g. hydraulic drives
}
B21B 2035/005
.
Hydraulic drive motors
Collapse
B21B 2035/10
.
Driving arrangements for rolls which have only a low-power drive ; Driving arrangements for rolls which receive power from the shaft of another roll
B21B 2035/103
. .
Fluid-driven rolls or rollers
B21B 2035/106
. .
Non-driven or idler rolls or rollers
Collapse
B21B 2035/14
.
Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills ( couplings or shafts in general F16 )
B21B 2035/149
. .
Measuring devices for spindles or couplings
Collapse
B21B 2037/00
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 B21B 38/00 )
B21B 2037/002
.
Mass flow control
Collapse
B21B 2038/00
Methods or devices for measuring,
{
detecting or monitoring
}
 specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
{
( Control devices or methods B21B 37/00 )
}
B21B 2038/002
.
Measuring axial forces of rolls
B21B 2038/004
.
Measuring scale thickness
Collapse
B21B 2045/00
Devices for surface
{
or other
}
 treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills ( B21B 15/00 ,
{
B21B 1/227 and B21B 27/005
}
 take precedence; technical features of scaling-off devices B21C 43/00 )
Collapse
B21B 2045/004
.
{
Heating the product
}
B21B 2045/006
. .
in vacuum or in inert atmosphere
Collapse
B21B 2045/02
.
for lubricating, cooling, or cleaning
{
( in particular in combination with forging or pressing devices B21B 15/005 , control of flatness or profile using lubricating or cooling B21B 37/44 )
}
Collapse
B21B 2045/0203
. .
{
Cooling
}
Collapse
B21B 2045/0209
. . .
{
Cooling devices, e.g. using gaseous coolants
}
B21B 2045/0212
. . . .
using gaseous coolants
Collapse
B21B 2045/0215
. . . .
{
using liquid coolants, e.g. for sections, for tubes
}
B21B 2045/0221
. . . . .
for structural sections, e.g. H-beams
B21B 2045/0227
. . . . .
for tubes
B21B 2045/0236
. .
Laying heads for overlapping rings on cooling conveyer
Collapse
B21B 2045/0239
. .
{
Lubricating
}
Collapse
B21B 2045/0245
. . .
{
Lubricating devices
}
Collapse
B21B 2045/0248
. . . .
{
using liquid lubricants, e.g. for sections, for tubes
}
B21B 2045/0254
. . . . .
for structural sections, e.g. H-beams
B21B 2045/026
. . . . .
for tubes
Collapse
B21B 2201/00
Special rolling modes
B21B 2201/02
.
Austenitic rolling
B21B 2201/04
.
Ferritic rolling
B21B 2201/06
.
Thermomechanical rolling
B21B 2201/08
.
Batch rolling
B21B 2201/10
.
Endless rolling
B21B 2201/12
.
Isothermic rolling
B21B 2201/14
.
Soft reduction
B21B 2201/16
.
Two-phase or mixed-phase rolling
B21B 2201/18
.
Vertical rolling pass lines
Collapse
Guide Heading:
Equipment codes
Collapse
B21B 2203/00
Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
B21B 2203/02
.
Backlash elimination
B21B 2203/04
.
Brakes
B21B 2203/06
.
Cassettes
B21B 2203/08
.
Clutches
B21B 2203/10
.
Counterweights
B21B 2203/12
.
Covers or shieldings
B21B 2203/14
.
Dummy bars or slabs
B21B 2203/16
.
Eccentrics
Collapse
B21B 2203/18
.
Rolls or rollers
B21B 2203/182
. .
Fluid driven rolls or rollers
B21B 2203/185
. .
Reversible rolls for changing grooves
B21B 2203/187
. .
Tilting rolls
B21B 2203/20
.
Flywheels
B21B 2203/22
.
Hinged chocks
B21B 2203/24
.
Hydrostatic bearings or guides
B21B 2203/26
.
Motors, drives
B21B 2203/28
.
Mounting or dismounting bearing and chock as a unit
B21B 2203/30
.
Quick or bayonet couplings
B21B 2203/32
.
Roll changing stools
B21B 2203/34
.
Rotational position or alignment
B21B 2203/36
.
Spacers
B21B 2203/38
.
Strain gauges
B21B 2203/40
.
Torsion bars or shafts
B21B 2203/42
.
Turntables
B21B 2203/44
.
Vibration dampers
Collapse
B21B 2205/00
Particular shaped rolled products
B21B 2205/02
.
Tailored blanks
B21B 2205/04
.
Taper- or wedge-shaped profiles
Collapse
B21B 2261/00
Product parameters
Collapse
B21B 2261/02
.
Transverse dimensions
Collapse
B21B 2261/04
. .
Thickness, gauge
B21B 2261/043
. . .
Blanks with variable thickness in the rolling direction
B21B 2261/046
. . .
Different thickness in width direction
B21B 2261/05
. . .
Different constant thicknesses in one rolled product
Collapse
B21B 2261/06
. .
Width
B21B 2261/065
. . .
Blanks with variable width
B21B 2261/08
. .
Diameter
B21B 2261/10
. .
Cross-sectional area
B21B 2261/12
.
Length
B21B 2261/14
.
Roughness
B21B 2261/18
.
Weight
Collapse
B21B 2261/20
.
Temperature
B21B 2261/21
. .
Temperature profile
B21B 2261/22
.
Hardness
Collapse
B21B 2263/00
Shape of product
B21B 2263/02
.
Profile, e.g. of plate, hot strip, sections
Collapse
B21B 2263/04
.
Flatness
B21B 2263/06
. .
Edge waves
B21B 2263/08
. .
Centre buckles
Collapse
B21B 2263/10
.
Lateral spread defects
B21B 2263/12
. .
Dog bone
B21B 2263/16
.
Alligatoring
B21B 2263/20
.
End shape ; fish tail ; tongue
B21B 2263/30
.
Shape in top view
Collapse
B21B 2265/00
Forming parameters
Collapse
B21B 2265/02
.
Tension
B21B 2265/04
. .
Front or inlet tension
B21B 2265/06
. .
Interstand tension
B21B 2265/08
. .
Back or outlet tension
B21B 2265/10
.
Compression, e.g. longitudinal compression
B21B 2265/12
.
Rolling load or rolling pressure ; roll force
Collapse
B21B 2265/14
.
Reduction rate
B21B 2265/16
. .
Extension
B21B 2265/18
.
Elongation
B21B 2265/20
.
Slip
B21B 2265/22
.
Pass schedule
B21B 2265/24
.
asymmetric rolling
Collapse
B21B 2267/00
Roll parameters
Collapse
B21B 2267/02
.
Roll dimensions
Collapse
B21B 2267/06
. .
Roll diameter
B21B 2267/065
. . .
Top and bottom roll have different diameters ; Asymmetrical rolling
B21B 2267/08
. .
Roll eccentricity
B21B 2267/10
.
Roughness of roll surface
B21B 2267/12
.
Roll temperature
Collapse
B21B 2267/18
.
Roll crown ; roll profile
B21B 2267/19
. .
Thermal crown
B21B 2267/20
. .
Ground camber or profile
B21B 2267/22
. .
Hydraulic expansion of rolls
B21B 2267/24
.
Roll wear
B21B 2267/26
.
Hardness of the roll surface
B21B 2267/28
.
Elastic moduli of rolls
Collapse
B21B 2269/00
Roll bending or shifting
Collapse
B21B 2269/02
.
Roll bending ; vertical bending of rolls
B21B 2269/04
. .
Work roll bending
B21B 2269/06
. .
Intermediate roll bending
B21B 2269/08
. .
Back-up roll bending
B21B 2269/10
.
Horizontal bending of rolls
Collapse
B21B 2269/12
.
Axial shifting the rolls
B21B 2269/14
. .
Work rolls
B21B 2269/16
. .
Intermediate rolls
B21B 2269/18
. .
Back-up rolls
Collapse
B21B 2271/00
Mill stand parameters
Collapse
B21B 2271/02
.
Roll gap, screw-down position, draft position
B21B 2271/025
. .
Tapered roll gap
B21B 2271/04
. .
Screw-down speed, draft speed
B21B 2271/06
.
Mill spring
Collapse
B21B 2273/00
Path parameters
B21B 2273/02
.
Vertical deviation, e.g. slack, looper height
B21B 2273/04
.
Lateral deviation, meandering, camber of product
Collapse
B21B 2273/06
.
Threading
B21B 2273/08
. .
Threading-in or before threading-in
B21B 2273/10
. .
Threading-out or after threading-out
Collapse
B21B 2273/12
.
End of product
B21B 2273/14
. .
Front end or leading end
B21B 2273/16
. .
Tail or rear end
B21B 2273/18
.
Presence of product
B21B 2273/20
.
Track of product
B21B 2273/22
.
Aligning on rolling axis, e.g. of roll calibers
B21B 2273/24
.
Web positioning
Collapse
B21B 2275/00
Mill drive parameters
Collapse
B21B 2275/02
.
Speed
Collapse
B21B 2275/04
. .
Roll speed
B21B 2275/05
. . .
Speed difference between top and bottom rolls
B21B 2275/06
. .
Product speed
B21B 2275/08
. .
Coiler speed
Collapse
B21B 2275/10
.
Motor power ; motor current
B21B 2275/12
. .
Roll torque
This page is owned by Office of Patent Classification.
Last Modified: 04/16/2013 4:31:16 PM