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 B01J 2/00; making ceramics by compacting or sintering C04B, e.g. C04B 35/64; for the production of metals as such, see class C22; reduction or decomposition of metal compounds in general C22B; making alloys by powder metallurgy C22C; electrolytic production of metal powder C25C 5/00)
 B22F

Note(s)

  1. The term "metallic powder" is to be understood as covering powders containing a substantial proportion of non-metallic material.
  2. 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.
  3. 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 (C04, C08 take precedence)
 B22F 1/02
·  comprising coating of the powder  [2]
 B22F 1/04
( transferred to B22F 9/04, covered by 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. 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 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]