1. CPC Sections
  2. CPC Section B
  3. CPC Class B21
  4. CPC Subclass B21B
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Version: 2024.08
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
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) [2018-08]
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.
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.
B21B 1/00
Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section (B21B 17/00 - 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 [2016-05]
B21B 1/02
.
for rolling heavy work, e.g. ingots, slabs, {blooms, or} billets, in which the cross-sectional form is unimportant {; Rolling combined with forging or pressing} [2023-08]
B21B 2001/022
. .
{Blooms or billets} [2013-01]
B21B 1/024
. .
{Forging or pressing (forging or pressing devices as units B21B 15/0035)} [2013-01]
B21B 1/026
. .
{Rolling} [2013-01]
B21B 2001/028
. .
{Slabs} [2013-01]
B21B 1/04
. .
in a continuous process [2013-01]
B21B 1/06
. .
in a non-continuous process {, e.g. triplet mill, reversing mill} [2017-08]
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) [2013-01]
B21B 1/0805
. .
{Flat bars, i.e. having a substantially rectangular cross-section} [2013-01]
B21B 2001/081
. .
{Roughening or texturing surfaces of structural sections, bars, rounds, wire rods} [2013-01]
B21B 1/0815
. .
{from flat-rolled products, e.g. by longitudinal shearing} [2013-01]
B21B 1/082
. .
Piling sections having lateral edges specially adapted for interlocking with each other in order to build a wall [2013-01]
B21B 1/085
. .
Rail sections [2013-01]
B21B 1/0855
. . .
{Rerolling or processing worn or discarded rail sections} [2013-01]
B21B 1/088
. .
H- or I-sections [2013-01]
B21B 1/0883
. . .
{using forging or pressing devices} [2013-01]
B21B 1/0886
. . .
{using variable-width rolls} [2013-01]
B21B 1/09
. .
L-sections [2013-01]
B21B 1/092
. .
T-sections [2013-01]
B21B 1/095
. .
U-or channel sections [2013-01]
B21B 1/098
. .
Z-sections [2017-05]
B21B 1/10
. .
in a single two-high or universal rolling mill {stand (B21B 1/085 - B21B 1/098 take precedence)} [2016-05]
B21B 1/12
. .
in a continuous process {, i.e. without reversing stands (B21B 1/085 - B21B 1/098 take precedence)} [2017-08]
B21B 1/14
. .
in a non-continuous process {, i.e. at least one reversing stand (B21B 1/085 - B21B 1/098 take precedence)} [2017-08]
B21B 1/16
.
for rolling {wire rods, bars, merchant bars, rounds} wire or material of like small cross-section [2013-01]
B21B 1/163
. .
{Rolling or cold-forming of concrete reinforcement bars or wire (reinforcement bars per se E04C 5/03); Rolls therefor} [2013-01]
B21B 1/166
. .
{Rolling wire into sections or flat ribbons} [2013-01]
B21B 1/18
. .
in a continuous process [2013-01]
B21B 1/20
. .
in a non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling) [2013-01]
B21B 1/22
.
for rolling {plates, strips,} bands or sheets of indefinite length (B21B 1/42 takes precedence) [2013-01]
B21B 2001/221
. .
{by cold-rolling} [2013-01]
B21B 1/222
. .
{in a rolling-drawing process; in a multi-pass mill} [2013-01]
B21B 1/224
. .
{Edge rolling of flat products} [2013-01]
B21B 2001/225
. .
{by hot-rolling} [2013-01]
B21B 1/227
. .
{Surface roughening or texturing} [2013-01]
B21B 2001/228
. .
{skin pass rolling or temper rolling} [2013-01]
B21B 1/24
. .
in a continuous {or semi-continuous} process {(B21B 1/224 takes precedence)} [2013-01]
B21B 1/26
. . .
by hot-rolling {, e.g. Steckel hot mill} [2017-08]
B21B 1/265
. . . .
{and by compressing or pushing the material in rolling direction} [2013-01]
B21B 1/28
. . .
by cold-rolling {, e.g. Steckel cold mill} [2017-08]
B21B 1/30
. .
in a non-continuous process {(B21B 1/224 takes precedence)} [2013-01]
B21B 1/32
. . .
in reversing {single stand} mills, e.g. with intermediate storage reels for accumulating work [2013-01]
B21B 1/34
. . . .
by hot-rolling [2013-01]
B21B 1/36
. . . .
by cold-rolling [2013-01]
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) [2013-01]
B21B 2001/383
. .
{Cladded or coated products} [2013-12]
B21B 2001/386
. .
{Plates} [2013-12]
B21B 1/40
.
for rolling foils which present special problems, e.g. because of thinness [2013-01]
B21B 1/42
.
for step-by-step or planetary rolling (making tubes by pilgrim-step rolling B21B 21/00) [2013-01]
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) [2013-01]
B21B 1/463
. .
{in a continuous process, i.e. the cast not being cut before rolling} [2013-01]
B21B 1/466
. .
{in a non-continuous process, i.e. the cast being cut before rolling} [2013-01]
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) [2023-08]
B21B 2003/001
.
{Aluminium or its alloys} [2013-01]
B21B 3/003
.
{Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling} [2013-01]
B21B 2003/005
.
{Copper or its alloys} [2013-01]
B21B 2003/006
.
{Powder metal alloys} [2013-01]
B21B 2003/008
.
{Zinc or its alloys} [2013-01]
B21B 3/02
.
Rolling special iron alloys {, e.g. stainless steel} [2017-08]
B21B 5/00
Extending closed shapes of metal bands by rolling (manufacture of circular shapes, e.g. wheel rims, B21H 1/06) [2013-01]
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 [2013-01]
B21B 11/00
Subsidising the rolling process by subjecting rollers or work to vibrations, {e.g. ultrasonic vibrations} [2013-01]
B21B 13/00
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B 17/00 - B21B 23/00 take precedence) [2024-01]
B21B 13/001
.
{Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands} [2013-01]
B21B 2013/003
.
{Inactive rolling stands} [2013-01]
B21B 13/005
.
{Cantilevered roll stands} [2013-01]
B21B 2013/006
.
{Multiple strand rolling mills; Mill stands with multiple caliber rolls} [2013-01]
B21B 13/008
.
{Skew rolling stands, e.g. for rolling rounds} [2013-01]
B21B 13/02
.
with axes of rolls arranged horizontally [2013-01]
B21B 2013/021
. .
{Twin mills} [2013-01]
B21B 13/023
. .
{the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling} [2013-01]
B21B 2013/025
. .
{Quarto, four-high stands} [2013-01]
B21B 2013/026
. .
{Quinto, five high-stands} [2013-01]
B21B 2013/028
. .
{Sixto, six-high stands} [2013-01]
B21B 13/04
. .
Three-high arrangement [2013-01]
B21B 13/06
.
with axes of rolls arranged vertically {, e.g. edgers} [2017-08]
B21B 13/08
.
with differently-directed roll axes, e.g. for the so-called "universal" rolling process [2013-01]
B21B 13/10
. .
all axes being arranged in one plane [2013-01]
B21B 13/103
. . .
{for rolling bars, rods or wire} [2013-01]
B21B 2013/106
. . .
{for sections, e.g. beams, rails} [2013-01]
B21B 13/12
. .
axes being arranged in different planes [2013-01]
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) [2013-01]
B21B 13/142
. .
{by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC} [2013-01]
B21B 13/145
. .
{Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product} [2013-01]
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} [2013-01]
B21B 13/16
.
with alternatively operative rolls {, e.g. revolver stands, turret mills} [2017-08]
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) [2013-01]
B21B 13/20
. .
for planetary rolling [2013-01]
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) [2013-01]
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 [2013-01]
B21B 15/0007
.
{Cutting or shearing the product} [2013-01]
B21B 2015/0014
. .
{transversely to the rolling direction} [2013-01]
B21B 2015/0021
. .
{in the rolling direction} [2013-01]
B21B 2015/0028
.
{Drawing the rolled product} [2013-01]
B21B 15/0035
.
{Forging or pressing devices as units} [2013-01]
B21B 15/0042
. .
{Tool changers} [2013-01]
B21B 15/005
. .
{Lubricating, cooling or heating means} [2013-01]
B21B 2015/0057
.
{Coiling the rolled product} [2013-01]
B21B 2015/0064
.
{Uncoiling the rolled product} [2013-01]
B21B 2015/0071
.
{Levelling the rolled product} [2013-01]
B21B 2015/0078
.
{Extruding the rolled product} [2013-01]
B21B 15/0085
.
{Joining ends of material to continuous strip, bar or sheet} [2013-01]
B21B 2015/0092
.
{Welding in the rolling direction} [2013-01]
B21B 15/02
.
in which work is subjected to permanent internal twisting, e.g. for producing reinforcement bars for concrete [2013-01]
Rolling methods or mills specially designed for making or processing tubes (control of tube rolling B21B 37/78) [2013-01]
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 [2013-01]
B21B 17/02
.
with mandrel, {i.e. the mandrel rod contacts the rolled tube over the rod length}(B21B 17/08 takes precedence) [2013-01]
B21B 17/04
. .
in a continuous process [2013-01]
B21B 17/06
. .
in a discontinuous process [2013-01]
B21B 17/08
.
with mandrel having one or more protrusions {, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills} [2017-08]
B21B 17/10
. .
in a continuous process [2013-01]
B21B 17/12
. .
in a discontinuous process {, e.g. plug-rolling mills} [2017-08]
B21B 17/14
.
without mandrel {, e.g. stretch-reducing mills} [2017-08]
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) [2013-01]
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 or Stiefel rotary piercers} [2023-08]
B21B 19/04
. .
Rolling basic material of solid, i.e. non-hollow, structure; Piercing {, e.g. rotary piercing mills} [2017-08]
B21B 19/06
. .
Rolling hollow basic material, {e.g. Assel mills}(B21B 19/04 takes precedence; separating work from mandrel B21C 45/00) [2013-01]
B21B 19/08
. . .
Enlarging tube diameter [2013-01]
B21B 19/10
. . .
Finishing, e.g. smoothing, sizing {, reeling} [2017-08]
B21B 19/12
.
the axes of the rollers being arranged essentially parallel to the axis of the work [2013-01]
B21B 19/14
. .
Rolling tubes by means of additional rollers arranged inside the tubes [2013-01]
B21B 19/16
. .
Rolling tubes without additional rollers arranged inside the tubes [2013-01]
B21B 21/00
Pilgrim-step tube-rolling {, i.e. pilger mills} [2017-08]
B21B 21/005
.
{with reciprocating stand, e.g. driving the stand} [2013-01]
B21B 21/02
.
Rollers therefor [2013-01]
B21B 21/04
.
Pilgrim-step feeding mechanisms (B21B 21/06 takes precedence) [2013-01]
B21B 21/045
. .
{for reciprocating stands} [2013-01]
B21B 21/06
.
Devices for revolving work between the steps [2013-01]
B21B 21/065
. .
{for reciprocating stands} [2013-01]
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) [2013-01]
B21B 2023/005
.
{Roughening or texturig surfaces of tubes} [2013-01]
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} [2017-08]
B21B 25/02
.
Guides, supports, or abutments for mandrels, e.g. carriages {or steadiers}; Adjusting devices for mandrels [2013-01]
B21B 25/04
.
Cooling or lubricating mandrels during operation [2013-01]
B21B 25/06
.
Interchanging mandrels {, fixing plugs on mandrel rods or cooling during interchanging mandrels (separating tubes from mandrels B21C 45/00)} [2017-08]
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 [2013-01]
B21B 27/005
.
{Rolls with a roughened or textured surface; Methods for making same} [2013-01]
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}) [2013-01]
B21B 27/021
. .
{Rolls for sheets or strips} [2013-01]
B21B 2027/022
. . .
{Rolls having tapered ends} [2013-01]
B21B 27/024
. .
{Rolls for bars, rods, rounds, tubes, wire or the like} [2013-01]
B21B 27/025
. . .
{Skew rolls} [2013-01]
B21B 27/027
. .
{Vertical rolls} [2013-01]
B21B 27/028
. .
{Variable-width rolls} [2013-01]
B21B 27/03
. .
Sleeved rolls {(B21B 27/028 takes precedence)} [2013-01]
B21B 27/032
. . .
{Rolls for sheets or strips} [2013-01]
B21B 27/035
. . .
{Rolls for bars, rods, rounds, tubes, wire or the like} [2013-01]
B21B 27/037
. . . .
{Skew rolls} [2013-01]
B21B 27/05
. . .
with deflectable sleeves [2013-01]
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)} [2013-01]
B21B 27/06
.
Lubricating, cooling or heating rolls [2013-01]
B21B 27/08
. .
internally [2013-01]
B21B 2027/083
. . .
{cooling internally} [2013-01]
B21B 2027/086
. . .
{heating internally} [2013-01]
B21B 27/10
. .
externally [2013-01]
B21B 2027/103
. . .
{cooling externally} [2013-01]
B21B 27/106
. . .
{Heating the rolls} [2013-01]
B21B 28/00
Maintaining rolls or rolling equipment in effective condition (lubricating, cooling or heating rolls while in use B21B 27/06) [2013-01]
B21B 28/02
.
Maintaining rolls in effective condition, e.g. reconditioning [2013-01]
B21B 28/04
. .
while in use, e.g. polishing {or grinding while the rolls are in their stands} [2013-01]
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)} [2017-08]
B21B 31/00
Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames [2013-01]
B21B 31/02
.
Rolling stand frames {or housings}; Roll mountings {; Roll chocks} [2017-08]
B21B 2031/021
. .
{Integral tandem mill housings} [2013-01]
B21B 2031/023
. .
{Transverse shifting one housing} [2013-01]
B21B 2031/025
. .
{Shifting the stand in or against the rolling direction} [2013-01]
B21B 2031/026
. .
{Transverse shifting the stand} [2013-01]
B21B 31/028
. .
{Prestressing of rolls or roll mountings in stand frames} [2013-01]
B21B 31/04
. .
with tie rods {in frameless stands}, e.g. prestressed tie rods [2013-01]
B21B 31/06
. .
Fastening stands or frames to foundation, e.g. to the sole plate (in general F16M) [2013-01]
B21B 31/07
.
Adaptation of roll {neck} bearings (bearings in general F16C) [2013-01]
B21B 2031/072
. .
{Bearing materials} [2013-01]
B21B 31/074
. .
{Oil film bearings, e.g. "Morgoil" bearings} [2013-01]
B21B 31/076
. .
{Cooling; Lubricating roller bearings} [2013-01]
B21B 31/078
. .
{Sealing devices (sealings in general F16J 15/00)} [2017-08]
B21B 31/08
.
Interchanging rolls, roll mountings, or stand frames {, e.g. using C-hooks; Replacing roll chocks on roll shafts} [2017-08]
B21B 31/10
. .
by horizontally displacing {, i.e. horizontal roll changing} [2017-08]
B21B 31/103
. . .
{Manipulators or carriages therefor} [2013-01]
B21B 31/106
. . .
{Vertical displacement of rolls or roll chocks during horizontal roll changing} [2013-01]
B21B 31/12
. .
by vertically displacing [2013-01]
B21B 31/14
. .
by pivotally displacing [2013-01]
B21B 31/16
.
Adjusting {or positioning} rolls (control devices B21B 37/00) [2013-01]
B21B 31/18
. .
by moving rolls axially [2013-01]
B21B 31/185
. . .
{and by crossing rolls} [2013-01]
B21B 31/20
. .
by moving rolls perpendicularly to roll axis [2013-01]
B21B 31/203
. . .
{Balancing rolls} [2013-01]
B21B 2031/206
. . .
{Horizontal offset of work rolls} [2013-01]
B21B 31/22
. . .
mechanically {, e.g. by thrust blocks, inserts for removal} [2017-08]
B21B 31/24
. . . .
by screws [2013-01]
B21B 31/26
. . . .
Adjusting eccentrically-mounted roll bearings [2013-01]
B21B 31/28
. . . .
by toggle-lever mechanisms [2013-01]
B21B 31/30
. . . .
by wedges or their equivalent [2013-01]
B21B 31/32
. . .
by liquid pressure {, e.g. hydromechanical adjusting} [2017-08]
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} [2013-01]
B21B 2033/005
.
{Cobble-freeing} [2013-01]
B21B 33/02
.
Preventing fracture of rolls [2013-01]
B21B 35/00
Drives for metal-rolling mills {, e.g. hydraulic drives} [2017-08]
B21B 2035/005
.
{Hydraulic drive motors} [2013-01]
B21B 35/02
.
for continuously-operating mills (B21B 35/10, B21B 35/12 take precedence) [2013-01]
B21B 35/025
. .
{for stretch-reducing of tubes} [2013-01]
B21B 35/04
. .
each stand having its own motor or motors [2013-01]
B21B 35/06
.
for non-continuously-operating mills or for single stands (B21B 35/10, B21B 35/12 take precedence) [2013-01]
B21B 35/08
. .
for reversing rolling mills [2013-01]
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 [2013-01]
B21B 2035/103
. .
{Fluid-driven rolls or rollers} [2013-01]
B21B 2035/106
. .
{Non-driven or idler rolls or rollers} [2013-01]
B21B 35/12
.
Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor [2013-01]
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) [2013-01]
B21B 35/141
. .
{Rigid spindle couplings, e.g. coupling boxes placed on roll necks (rigid couplings in general F16D 1/00)} [2013-01]
B21B 35/142
. .
{Yielding spindle couplings; Universal joints for spindles (yielding couplings in general F16D 3/00)} [2013-01]
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)} [2013-01]
B21B 35/144
. . . .
{Wobbler couplings} [2013-01]
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)} [2013-01]
B21B 35/146
. . . .
{Tongue and slipper joints (tongue and slipper joints in general F16D 3/265)} [2013-01]
B21B 35/147
. .
{Lubrication of spindle couplings} [2013-01]
B21B 35/148
. .
{Spindle carriers or balancers} [2013-01]
B21B 2035/149
. .
{Measuring devices for spindles or couplings} [2013-01]
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) [2013-01]
B21B 2037/002
.
{Mass flow control} [2013-01]
B21B 37/005
.
{Control of time interval or spacing between workpieces} [2013-01]
B21B 37/007
.
{Control for preventing or reducing vibration, chatter or chatter marks (B21B 37/66 takes precedence)} [2013-01]
B21B 37/16
.
Control of thickness, width, diameter or other transverse dimensions (B21B 37/58 takes precedence) [2013-01]
B21B 37/165
. .
{responsive mainly to the measured thickness of the product} [2013-01]
B21B 37/18
. .
Automatic gauge control [2013-01]
B21B 37/20
. . .
in tandem mills [2013-01]
B21B 37/22
. .
Lateral spread control; Width control, e.g. by edge rolling [2013-01]
B21B 37/24
. .
Automatic variation of thickness according to a predetermined programme [2013-01]
B21B 37/26
. . .
for obtaining one strip having successive lengths of different constant thickness [2013-01]
B21B 37/28
.
Control of flatness or profile during rolling of strip, sheets or plates [2013-01]
B21B 37/30
. .
using roll camber control [2013-01]
B21B 37/32
. . .
by cooling, heating or lubricating the rolls [2013-01]
B21B 37/34
. . .
by hydraulic expansion of the rolls [2013-01]
B21B 37/36
. . .
by radial displacement of the roll sleeve on a stationary roll beam by means of hydraulic supports [2013-01]
B21B 37/38
. .
using roll bending (B21B 37/42 takes precedence) [2013-01]
B21B 37/40
. .
using axial shifting of the rolls (B21B 37/42 takes precedence) [2013-01]
B21B 37/42
. .
using a combination of roll bending and axial shifting of the rolls [2013-01]
B21B 37/44
. .
using heating, lubricating or water-spray cooling of the product [2013-01]
B21B 37/46
.
Roll speed or drive motor control (B21B 37/52, B21B 37/60 take precedence) [2013-01]
B21B 37/48
.
Tension control; Compression control [2013-01]
B21B 37/50
. .
by looper control [2013-01]
B21B 37/52
. .
by drive motor control [2013-01]
B21B 37/54
. . .
including coiler drive control, e.g. reversing mills [2013-01]
B21B 37/56
.
Elongation control [2013-01]
B21B 37/58
.
Roll-force control; Roll-gap control {(B21B 38/105 takes precedence)} [2013-01]
B21B 37/60
. .
by control of a motor which drives an adjusting screw [2013-01]
B21B 37/62
. .
by control of a hydraulic adjusting device [2013-01]
B21B 37/64
. .
Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands [2013-01]
B21B 37/66
. .
Roll eccentricity compensation systems [2013-01]
B21B 37/68
.
Camber or steering control for strip, sheets or plates, e.g. preventing meandering [2013-01]
B21B 37/70
.
Length control (B21B 37/56 takes precedence) [2013-01]
B21B 37/72
.
Rear end control; Front end control [2013-01]
B21B 37/74
.
Temperature control, e.g. by cooling or heating the rolls or the product (B21B 37/32, B21B 37/44 take precedence) [2013-01]
B21B 37/76
. .
Cooling control on the run-out table [2013-01]
B21B 37/78
.
Control of tube rolling [2013-01]
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)} [2017-08]
B21B 2038/002
.
{Measuring axial forces of rolls} [2013-01]
B21B 2038/004
.
{Measuring scale thickness} [2013-01]
B21B 38/006
.
{for measuring temperature} [2013-01]
B21B 38/008
.
{Monitoring or detecting vibration, chatter or chatter marks} [2013-01]
B21B 38/02
.
for measuring flatness or profile of strips [2013-01]
B21B 38/04
.
for measuring thickness, width, diameter or other transverse dimensions of the product [2013-01]
B21B 38/06
.
for measuring tension or compression [2013-01]
B21B 38/08
.
for measuring roll-force [2013-01]
B21B 38/10
.
for measuring roll-gap, e.g. pass indicators [2013-01]
B21B 38/105
. .
{Calibrating or presetting roll-gap} [2013-01]
B21B 38/12
.
for measuring roll camber [2013-01]
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) [2013-01]
B21B 39/002
.
{Piling, unpiling, unscrambling} [2013-01]
B21B 39/004
.
{Transverse moving} [2013-01]
B21B 39/006
.
{Pinch roll sets} [2013-01]
B21B 39/008
.
{Rollers for roller conveyors (roller-ways in general B65G 13/00, B21B 39/00)} [2016-05]
B21B 39/02
.
Feeding or supporting work; Braking or tensioning arrangements {, e.g. threading arrangements} [2017-08]
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) [2013-01]
B21B 39/06
. .
Pushing or forcing work into pass [2013-01]
B21B 39/08
. .
Braking or tensioning arrangements [2013-01]
B21B 39/082
. . .
{Bridle devices} [2013-01]
B21B 39/084
. . .
{Looper devices} [2013-01]
B21B 39/086
. . .
{Braking devices} [2013-01]
B21B 39/088
. . .
{Bumpers, stopping devices} [2013-01]
B21B 39/10
. .
Arrangement or installation of feeding rollers in rolling stands [2013-01]
B21B 39/12
. .
Arrangement or installation of roller tables in relation to a roll stand [2013-01]
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) [2013-01]
B21B 39/16
. .
immediately before entering or after leaving the pass [2013-01]
B21B 39/165
. . .
{Guides or guide rollers for rods, bars, rounds, tubes (B21B 39/28 takes precedence); Aligning guides} [2013-01]
B21B 39/18
. .
Switches for directing work in metal-rolling mills or trains [2013-01]
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) [2013-01]
B21B 39/22
. .
by tipping, e.g. by lifting one side by levers or wedges (B21B 39/26, B21B 39/28 take precedence) [2013-01]
B21B 39/223
. . .
{Side-guard manipulators} [2013-01]
B21B 39/226
. . .
{Tiltable ingot chairs} [2013-01]
B21B 39/24
. .
by tongs or grippers [2013-01]
B21B 39/26
. .
by members, e.g. grooved, engaging opposite sides of the work and moved relatively to each other to revolve the work [2013-01]
B21B 39/28
. .
by means of guide members shaped to revolve the work during its passage [2013-01]
B21B 39/30
. .
by lodging it in a rotating ring manipulator or ring segment manipulator [2013-01]
B21B 39/32
. .
Devices specially adapted for turning sheets [2013-01]
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 [2013-01]
B21B 41/00
Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters [2013-01]
B21B 41/02
.
Returning work to repeat the pass or passes {within the same stand} [2013-01]
B21B 41/04
. .
above or underneath the rolling stand or rolls [2013-01]
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} [2013-01]
B21B 41/08
.
without overall change in the general direction of movement of the work [2013-01]
B21B 41/10
. .
Loop deflectors {(B21B 39/084 takes precedence)} [2013-01]
B21B 41/12
.
Arrangements of interest only with respect to provision for indicating or controlling operations [2013-01]
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) [2013-01]
B21B 43/003
.
{Transfer to bed} [2013-01]
B21B 43/006
.
{Transfer from bed} [2013-01]
B21B 43/02
.
Cooling beds comprising rakes {racks, walking beams} or bars (B21B 43/10 takes precedence) [2013-01]
B21B 43/04
.
Cooling beds comprising rolls or worms [2013-01]
B21B 43/06
.
Cooling beds comprising carriages (B21B 43/08 takes precedence) [2013-01]
B21B 43/08
.
Cooling beds comprising revolving drums or recycling chains {or discs} [2013-01]
B21B 43/10
.
Cooling beds with other work-shifting elements projecting through the bed [2013-01]
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 conveyors {, e.g. before cutting} [2017-08]
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) [2013-01]
B21B 45/002
.
{Increasing friction between work and working rolls by using friction increasing substance} [2013-01]
B21B 45/004
.
{Heating the product} [2013-01]
B21B 2045/006
. .
{in vacuum or in inert atmosphere} [2013-01]
B21B 45/008
.
{Heat shields} [2013-01]
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)} [2013-01]
B21B 45/0203
. .
{Cooling} [2013-01]
B21B 45/0206
. . .
{Coolants} [2013-01]
B21B 45/0209
. . .
{Cooling devices, e.g. using gaseous coolants} [2013-01]
B21B 2045/0212
. . . .
{using gaseous coolants} [2013-01]
B21B 45/0215
. . . .
{using liquid coolants, e.g. for sections, for tubes} [2013-01]
B21B 45/0218
. . . . .
{for strips, sheets, or plates (B21B 45/023, B21B 45/0233 take precedence)} [2013-01]
B21B 2045/0221
. . . . .
{for structural sections, e.g. H-beams} [2013-01]
B21B 45/0224
. . . . .
{for wire, rods, rounds, bars (B21B 45/023, B21B 45/0233 take precedence)} [2013-01]
B21B 2045/0227
. . . . .
{for tubes} [2013-01]
B21B 45/023
. . . . .
{by immersion in a bath} [2013-01]
B21B 45/0233
. . . . .
{Spray nozzles, Nozzle headers; Spray systems} [2013-01]
B21B 2045/0236
. .
{Laying heads for overlapping rings on cooling conveyor} [2016-05]
B21B 45/0239
. .
{Lubricating} [2013-01]
B21B 45/0242
. . .
{Lubricants} [2013-01]
B21B 45/0245
. . .
{Lubricating devices} [2013-01]
B21B 45/0248
. . . .
{using liquid lubricants, e.g. for sections, for tubes} [2013-01]
B21B 45/0251
. . . . .
{for strips, sheets, or plates} [2013-01]
B21B 2045/0254
. . . . .
{for structural sections, e.g. H-beams} [2013-01]
B21B 45/0257
. . . . .
{for wire, rods, rounds, bars} [2013-01]
B21B 2045/026
. . . . .
{for tubes} [2013-01]
B21B 45/0263
. . . .
{using solid lubricants} [2013-01]
B21B 45/0266
. .
{Measuring or controlling thickness of liquid films} [2013-01]
B21B 45/0269
. .
{Cleaning} [2013-01]
B21B 45/0272
. . .
{Cleaning compositions} [2013-01]
B21B 45/0275
. . .
{Cleaning devices} [2013-01]
B21B 45/0278
. . . .
{removing liquids} [2013-01]
B21B 45/0281
. . . . .
{removing coolants} [2013-01]
B21B 45/0284
. . . . .
{removing lubricants} [2013-01]
B21B 45/0287
. . . .
{removing solid particles, e.g. dust, rust} [2013-01]
B21B 45/029
. . .
{Liquid recovering devices} [2013-01]
B21B 45/0293
. . . .
{Recovering coolants} [2013-01]
B21B 45/0296
. . . .
{Recovering lubricants} [2013-01]
B21B 45/04
.
for de-scaling {, e.g. by brushing (descaling of rod or wire B21C 43/04)} [2017-08]
B21B 45/06
. .
of strip material (B21B 45/08 takes precedence) [2013-01]
B21B 45/08
. .
hydraulically [2013-01]
B21B 47/00
Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal (soaking pits C21D 9/70) [2013-01]
B21B 47/02
.
for folding sheets before rolling [2013-01]
B21B 47/04
.
for separating layers after rolling [2013-01]
B21B 99/00
Subject matter not provided for in other groups of this subclass [2013-01]
B21B 2201/00
Special rolling modes [2013-01]
B21B 2201/02
.
Austenitic rolling [2013-01]
B21B 2201/04
.
Ferritic rolling [2013-01]
B21B 2201/06
.
Thermomechanical rolling [2013-01]
B21B 2201/08
.
Batch rolling [2013-01]
B21B 2201/10
.
Endless rolling [2013-01]
B21B 2201/12
.
Isothermic rolling [2013-01]
B21B 2201/14
.
Soft reduction [2013-01]
B21B 2201/16
.
Two-phase or mixed-phase rolling [2013-01]
B21B 2201/18
.
Vertical rolling pass lines [2013-01]
Equipment codes [2013-01]
B21B 2203/00
Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods [2013-01]
B21B 2203/02
.
Backlash elimination [2013-01]
B21B 2203/04
.
Brakes [2013-01]
B21B 2203/06
.
Cassettes [2013-01]
B21B 2203/08
.
Clutches [2013-01]
B21B 2203/10
.
Counterweights [2013-01]
B21B 2203/12
.
Covers or shieldings [2013-01]
B21B 2203/14
.
Dummy bars or slabs [2013-01]
B21B 2203/16
.
Eccentrics [2013-01]
B21B 2203/18
.
Rolls or rollers [2013-01]
B21B 2203/182
. .
Fluid driven rolls or rollers [2013-01]
B21B 2203/185
. .
Reversible rolls for changing grooves [2013-01]
B21B 2203/187
. .
Tilting rolls [2013-01]
B21B 2203/20
.
Flywheels [2013-01]
B21B 2203/22
.
Hinged chocks [2013-01]
B21B 2203/24
.
Hydrostatic bearings or guides [2013-01]
B21B 2203/26
.
Motors, drives [2013-01]
B21B 2203/28
.
Mounting or dismounting bearing and chock as a unit [2013-01]
B21B 2203/30
.
Quick or bayonet couplings [2013-01]
B21B 2203/32
.
Roll changing stools [2013-01]
B21B 2203/34
.
Rotational position or alignment [2013-01]
B21B 2203/36
.
Spacers [2013-01]
B21B 2203/38
.
Strain gauges [2013-01]
B21B 2203/40
.
Torsion bars or shafts [2013-01]
B21B 2203/42
.
Turntables [2013-01]
B21B 2203/44
.
Vibration dampers [2013-01]
B21B 2205/00
Particular shaped rolled products [2013-01]
B21B 2205/02
.
Tailored blanks [2013-01]
B21B 2205/04
.
Taper- or wedge-shaped profiles [2013-01]
B21B 2261/00
Product parameters [2013-01]
B21B 2261/02
.
Transverse dimensions [2013-01]
B21B 2261/04
. .
Thickness, gauge [2013-01]
B21B 2261/043
. . .
Blanks with variable thickness in the rolling direction [2013-01]
B21B 2261/046
. . .
Different thickness in width direction [2013-01]
B21B 2261/05
. . .
Different constant thicknesses in one rolled product [2013-01]
B21B 2261/06
. .
Width [2013-01]
B21B 2261/065
. . .
Blanks with variable width [2013-01]
B21B 2261/08
. .
Diameter [2013-01]
B21B 2261/10
. .
Cross-sectional area [2013-01]
B21B 2261/12
.
Length [2013-01]
B21B 2261/14
.
Roughness [2013-01]
B21B 2261/18
.
Weight [2013-01]
B21B 2261/20
.
Temperature [2013-01]
B21B 2261/21
. .
Temperature profile [2013-01]
B21B 2261/22
.
Hardness [2013-01]
B21B 2263/00
Shape of product [2013-01]
B21B 2263/02
.
Profile, e.g. of plate, hot strip, sections [2013-01]
B21B 2263/04
.
Flatness [2013-01]
B21B 2263/06
. .
Edge waves [2013-01]
B21B 2263/08
. .
Centre buckles [2013-01]
B21B 2263/10
.
Lateral spread defects [2013-01]
B21B 2263/12
. .
Dog bone [2013-01]
B21B 2263/16
.
Alligatoring [2013-01]
B21B 2263/20
.
End shape; fish tail; tongue [2013-01]
B21B 2263/30
.
Shape in top view [2013-01]
B21B 2265/00
Forming parameters [2013-01]
B21B 2265/02
.
Tension [2013-01]
B21B 2265/04
. .
Front or inlet tension [2013-01]
B21B 2265/06
. .
Interstand tension [2013-01]
B21B 2265/08
. .
Back or outlet tension [2013-01]
B21B 2265/10
.
Compression, e.g. longitudinal compression [2013-01]
B21B 2265/12
.
Rolling load or rolling pressure; roll force [2013-01]
B21B 2265/14
.
Reduction rate [2013-01]
B21B 2265/16
. .
Extension [2013-01]
B21B 2265/18
.
Elongation [2013-01]
B21B 2265/20
.
Slip [2013-01]
B21B 2265/22
.
Pass schedule [2013-01]
B21B 2265/24
.
asymmetric rolling [2013-01]
B21B 2267/00
Roll parameters [2013-01]
B21B 2267/02
.
Roll dimensions [2013-01]
B21B 2267/06
. .
Roll diameter [2013-01]
B21B 2267/065
. . .
Top and bottom roll have different diameters; Asymmetrical rolling [2013-01]
B21B 2267/08
. .
Roll eccentricity [2013-01]
B21B 2267/10
.
Roughness of roll surface [2013-01]
B21B 2267/12
.
Roll temperature [2013-01]
B21B 2267/18
.
Roll crown; roll profile [2013-01]
B21B 2267/19
. .
Thermal crown [2013-01]
B21B 2267/20
. .
Ground camber or profile [2013-01]
B21B 2267/22
. .
Hydraulic expansion of rolls [2013-01]
B21B 2267/24
.
Roll wear [2013-01]
B21B 2267/26
.
Hardness of the roll surface [2013-01]
B21B 2267/28
.
Elastic moduli of rolls [2013-01]
B21B 2269/00
Roll bending or shifting [2013-01]
B21B 2269/02
.
Roll bending; vertical bending of rolls [2013-01]
B21B 2269/04
. .
Work roll bending [2013-01]
B21B 2269/06
. .
Intermediate roll bending [2013-01]
B21B 2269/08
. .
Back-up roll bending [2013-01]
B21B 2269/10
.
Horizontal bending of rolls [2013-01]
B21B 2269/12
.
Axial shifting the rolls [2013-01]
B21B 2269/14
. .
Work rolls [2013-01]
B21B 2269/16
. .
Intermediate rolls [2013-01]
B21B 2269/18
. .
Back-up rolls [2013-01]
B21B 2271/00
Mill stand parameters [2013-01]
B21B 2271/02
.
Roll gap, screw-down position, draft position [2013-01]
B21B 2271/025
. .
Tapered roll gap [2013-01]
B21B 2271/04
. .
Screw-down speed, draft speed [2013-01]
B21B 2271/06
.
Mill spring [2013-01]
B21B 2273/00
Path parameters [2013-01]
B21B 2273/02
.
Vertical deviation, e.g. slack, looper height [2013-01]
B21B 2273/04
.
Lateral deviation, meandering, camber of product [2013-01]
B21B 2273/06
.
Threading [2013-01]
B21B 2273/08
. .
Threading-in or before threading-in [2013-01]
B21B 2273/10
. .
Threading-out or after threading-out [2013-01]
B21B 2273/12
.
End of product [2013-01]
B21B 2273/14
. .
Front end or leading end [2013-01]
B21B 2273/16
. .
Tail or rear end [2013-01]
B21B 2273/18
.
Presence of product [2013-01]
B21B 2273/20
.
Track of product [2013-01]
B21B 2273/22
.
Aligning on rolling axis, e.g. of roll calibers [2013-01]
B21B 2273/24
.
Web positioning [2013-01]
B21B 2275/00
Mill drive parameters [2013-01]
B21B 2275/02
.
Speed [2013-01]
B21B 2275/04
. .
Roll speed [2013-01]
B21B 2275/05
. . .
Speed difference between top and bottom rolls [2013-01]
B21B 2275/06
. .
Product speed [2013-01]
B21B 2275/08
. .
Coiler speed [2013-01]
B21B 2275/10
.
Motor power; motor current [2013-01]
B21B 2275/12
. .
Roll torque [2013-01]