|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

SHAPING

|  | B22 |
CASTING; POWDER METALLURGY

|  | B22F |
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (processes or devices for granulating materials in general Fulltext... Hierarchy... Expanded...B01J 2/00; making ceramics by compacting or sintering Fulltext... Hierarchy... Expanded...C04B, e.g. Fulltext... Hierarchy... Expanded...C04B 35/64; for the production of metals as such, see class Fulltext... Hierarchy... Expanded...C22; reduction or decomposition of metal compounds in general Fulltext... Hierarchy... Expanded...C22B; making alloys by powder metallurgy Fulltext... Hierarchy... Expanded...C22C; electrolytic production of metal powder Fulltext... Hierarchy... Expanded...C25C 5/00)

|  | B22F |
Note(s) The term "metallic powder" is to be understood as covering powders containing a substantial proportion of non-metallic material. The term "powder" is not intended to exclude somewhat larger particles which are worked, obtained or behave in a manner similar to powder, e.g. fibres. The production of metal powder is classified in this sub-class insofar as the invention relates to the preparation of powder with specific physical characteristics. [3]

|  | B22F 1/00 |
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition (Fulltext... Hierarchy... Expanded...C04, Fulltext... Hierarchy... Expanded...C08 take precedence)

|  | B22F 1/02 |
· | comprising coating of the powder [2]

|  | B22F 1/04 |
( transferred to Fulltext... Hierarchy... Expanded...B22F 9/04, covered by Fulltext... Hierarchy... Expanded...B22F 1/02 )

|  | B22F 3/00 |
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor

|  | B22F 3/02 |
· | Compacting only

|  | B22F 3/04 |
· · | by applying fluid pressure

|  | B22F 3/06 |
· · | by centrifugal forces

|  | B22F 3/08 |
· · | by explosive forces

|  | B22F 3/10 |
· | Sintering only, e.g. making porous workpieces

|  | B22F 3/12 |
· | Both compacting and sintering

|  | B22F 3/14 |
· · | simultaneously

|  | B22F 3/16 |
· · | in successive or repeated steps

|  | B22F 3/18 |
· | for producing sheet material by making use of pressure rollers

|  | B22F 3/20 |
· | for producing extruded rod stock

|  | B22F 3/22 |
· | for producing castings from a slip

|  | B22F 3/24 |
· | After-treatment of workpieces or articles

|  | B22F 3/26 |
· · | Impregnating

|  | B22F 5/00 |
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product

|  | B22F 5/02 |
· | of piston rings

|  | B22F 5/04 |
· | of turbine blades

|  | B22F 5/06 |
· | of threaded articles, e.g. nuts

|  | B22F 5/08 |
· | of toothed articles, e.g. gear wheels; of cam discs

|  | B22F 7/00 |
Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting

|  | B22F 7/02 |
· | of composite layers

|  | B22F 7/04 |
· · | with one or more layers not made from powder, e.g. made from solid metal

|  | B22F 7/06 |
· | of composite workpieces or articles from parts, e.g. to form tipped tools

|  | B22F 7/08 |
· · | with one or more parts not made from powder

|  | B22F 9/00 |
Making metallic powder or suspensions thereof

|  | B22F 9/02 |
· | using physical processes [3]

|  | B22F 9/04 |
· · | starting from solid material, e.g. by crushing, grinding or milling (crushing, grinding or milling, in general, see the relevant sub-classes, e.g. Fulltext... Hierarchy... Expanded...B02C) [3]

|  | B22F 9/06 |
· · | starting from liquid material [3]

|  | B22F 9/08 |
· · · | by casting, e.g. through sieves or in water, by atomising or spraying (using electric discharge Fulltext... Hierarchy... Expanded...B22F 9/14) [3]

|  | B22F 9/10 |
· · · · | using centrifugal force [3]

|  | B22F 9/12 |
· · | starting from gaseous material [3]

|  | B22F 9/14 |
· · | using electric discharge [3]

|  | B22F 9/16 |
· | using chemical processes [3]

|  | B22F 9/18 |
· · | with reduction of metal compounds [3]

|  | B22F 9/20 |
· · · | starting from solid metal compounds [3]

|  | B22F 9/22 |
· · · · | using gaseous reductors [3]

|  | B22F 9/24 |
· · · | starting from liquid metal compounds, e.g. solutions [3]

|  | B22F 9/26 |
· · · · | using gaseous reductors [3]

|  | B22F 9/28 |
· · · | starting from gaseous metal compounds [3]

|  | B22F 9/30 |
· · | with decomposition of metal compounds, e.g. by pyrolysis [3]