|  | 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) This subclass covers the making of metallic powder only insofar as powder with specific physical characteristics is made. [6] In this subclass, the following terms or expressions are used with the meanings indicated: "metallic powder" covers powders containing a substantial proportion of non-metallic material; "powder" includes somewhat larger particles which are worked, obtained or behave in a manner similar to powder, e.g. fibres.

|  | 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 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 3/03 |
· · | Press-moulding apparatus therefor [6]

|  | B22F 3/035 |
· · · | with one or more of the parts thereof being pivotally mounted [6]

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

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

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

|  | B22F 3/087 |
· · | using high energy impulses, e.g. magnetic field impulses [6]

|  | B22F 3/093 |
· · | using vibration [6]

|  | B22F 3/10 |
· | Sintering only

|  | B22F 3/105 |
· · | by using electric current, laser radiation or plasma (Fulltext... Hierarchy... Expanded...B22F 3/11 takes precedence) [6]

|  | B22F 3/11 |
· · | Making porous workpieces or articles [6]

|  | B22F 3/115 |
· | by spraying molten metal, i.e. spray sintering, spray casting [6]

|  | B22F 3/12 |
· | Both compacting and sintering (by forging Fulltext... Hierarchy... Expanded...B22F 3/17) [6]

|  | B22F 3/14 |
· · | simultaneously

|  | B22F 3/15 |
· · · | Hot isostatic pressing [6]

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

|  | B22F 3/17 |
· | by forging [6]

|  | B22F 3/18 |
· | by using pressure rollers [6]

|  | B22F 3/20 |
· | by extruding

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

|  | B22F 3/23 |
· | involving a self-propagating high-temperature synthesis or reaction sintering step [6]

|  | 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 5/10 |
· | of articles with cavities or holes, not otherwise provided for in the preceding subgroups [6]

|  | B22F 5/12 |
· | of tubes or wires [6]

|  | 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 8/00 |
Manufacture of articles from scrap or waste metal particles [6]

|  | 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 subclasses, 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]