B
PERFORMING OPERATIONS; TRANSPORTING
SHAPING
B22
CASTING; POWDER METALLURGY
B22F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER

Note(s) [6]

  • This subclass covers the making of metallic powder only insofar as powder with specific physical characteristics is made.
  • 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 [2006.01]
B22F 1/02
comprising coating of the powder [2006.01]
B22F 3/00
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor [2006.01]
B22F 3/02
B22F 3/03
Press-moulding apparatus therefor [2006.01]
B22F 3/035
with one or more of the parts thereof being pivotally mounted [2006.01]
B22F 3/04
by applying fluid pressure [2006.01]
B22F 3/06
by centrifugal forces [2006.01]
B22F 3/08
by explosive forces [2006.01]
B22F 3/087
using high energy impulses, e.g. magnetic field impulses [2006.01]
B22F 3/093
using vibration [2006.01]
B22F 3/10
B22F 3/105
by using electric current, laser radiation or plasma (B22F 3/11 takes precedence) [2006.01]
B22F 3/11
Making porous workpieces or articles [2006.01]
B22F 3/115
by spraying molten metal, i.e. spray sintering, spray casting [2006.01]
B22F 3/12
B22F 3/14
simultaneously [2006.01]
B22F 3/15
Hot isostatic pressing [2006.01]
B22F 3/16
in successive or repeated steps [2006.01]
B22F 3/17
by forging [2006.01]
B22F 3/18
by using pressure rollers [2006.01]
B22F 3/20
by extruding [2006.01]
B22F 3/22
for producing castings from a slip [2006.01]
B22F 3/23
involving a self-propagating high-temperature synthesis or reaction sintering step [2006.01]
B22F 3/24
After-treatment of workpieces or articles [2006.01]
B22F 3/26
Impregnating [2006.01]
B22F 5/00
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product [2006.01]
B22F 5/02
of piston rings [2006.01]
B22F 5/04
of turbine blades [2006.01]
B22F 5/06
of threaded articles, e.g. nuts [2006.01]
B22F 5/08
of toothed articles, e.g. gear wheels; of cam discs [2006.01]
B22F 5/10
of articles with cavities or holes, not otherwise provided for in the preceding subgroups [2006.01]
B22F 5/12
of tubes or wires [2006.01]
B22F 7/00
Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting [2006.01]
B22F 7/02
of composite layers [2006.01]
B22F 7/04
with one or more layers not made from powder, e.g. made from solid metal [2006.01]
B22F 7/06
of composite workpieces or articles from parts, e.g. to form tipped tools [2006.01]
B22F 7/08
with one or more parts not made from powder [2006.01]
B22F 8/00
Manufacture of articles from scrap or waste metal particles [2006.01]
B22F 9/00
Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor [2006.01]
B22F 9/02
using physical processes [2006.01]
B22F 9/04
starting from solid material, e.g. by crushing, grinding or milling [2006.01]
B22F 9/06
starting from liquid material [2006.01]
B22F 9/08
by casting, e.g. through sieves or in water, by atomising or spraying (using electric discharge B22F 9/14) [2006.01]
B22F 9/10
using centrifugal force [2006.01]
B22F 9/12
starting from gaseous material [2006.01]
B22F 9/14
using electric discharge [2006.01]
B22F 9/16
using chemical processes [2006.01]
B22F 9/18
with reduction of metal compounds [2006.01]
B22F 9/20
starting from solid metal compounds [2006.01]
B22F 9/22
using gaseous reductors [2006.01]
B22F 9/24
starting from liquid metal compounds, e.g. solutions [2006.01]
B22F 9/26
using gaseous reductors [2006.01]
B22F 9/28
starting from gaseous metal compounds [2006.01]
B22F 9/30
with decomposition of metal compounds, e.g. by pyrolysis [2006.01]