(0)B21B:1/4:

(0)B21B:1/4:

IPC6

SECTION B - PERFORMING OPERATIONS; TRANSPORTING

ROLLING OF METAL

B21B

2/5

B21B003/00 - B21B019/16

3

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00

Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences (altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C 21 D, C 22 F)

Rolling special iron alloys

Extending closed shapes of metal bands by rolling (manufacture of circular shapes, e.g. wheel rims, B 21 H 1/06)

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

Subsidising the rolling processes by subjecting rollers or work to vibrations

Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B 21 B 17/00 to B 21 B 23/00 take precedence; details, component parts, accessories, auxiliary means, procedures in connection with metal rolling, see the relevant groups)

with axes of rolls arranged horizontally

Three-high arrangement

with axes of rolls arranged vertically

with differently-directed roll axes, e.g. for the so-called "universal" rolling process

all axes being arranged in one plane

axes being arranged in different planes

having counter-pressure devices acting on rolls to inhibit deflection of same under load (counter-pressure devices as such B 21 B 29/00)

with alternatively operative rolls

for step-by-step or planetary rolling (methods B 21 B 1/42; making tubes by pilgrim-step rolling B 21 B 21/00)

for planetary rolling

for rolling metal immediately subsequent to continuous casting (methods therefor B 21 B 1/46; continuous casting B 22 D 11/00, e.g. into moulds with rolls B 22 D 11/06)

Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills

in which work is subjected to permanent internal twisting, e.g. for producing reinforcement bars for concrete

Rolling methods or mills specially designed for making or processing tubes (control of tube rolling B 21 B 37/78)

Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling

with mandrel (B 21 B 17/08 takes precedence) [2]

in a continuous process

in a discontinuous process

with mandrel having one or more protrusions [2]

in a continuous process

in a discontinuous process

without mandrel

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B 21 D)

the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling

Rolling basic material of solid, i.e. non-hollow, structure; Piercing

Rolling hollow basic material (B 21 B 19/04 takes precedence; separating work from mandrel B 21 C 45/00)

Enlarging tube diameter

Finishing, e.g. smoothing, sizing

the axes of the rollers being arranged essentially parallel to the axis of the work

Rolling tubes by means of additional rollers arranged inside the tubes

Rolling tubes without additional rollers arranged inside the tubes

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