WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (processes or devices for granulating materials in general B 01 J 2/00; making ceramics by compacting or sintering C 04 B, e.g. C 04 B 35/64; for the production of metals as such, see class C 22; reduction or decomposition of metal compounds in general C 22 B; making alloys by powder metallurgy
C 22 C; electrolytic production of metal powder C 25 C 5/00)
Notes
(1)
This subclass covers the making of metallic powder only insofar as powder with specific physical characteristics is made. [6]
(2)
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.
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 (C 04, C 08 take precedence)
1
/
02
•
comprising coating of the powder [2]
3
/
00
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
3
/
02
•
Compacting only
3
/
03
•
•
Press-moulding apparatus therefor [6]
3
/
035
•
•
•
with one or more of the parts thereof being pivotally mounted [6]
3
/
04
•
•
by applying fluid pressure
3
/
06
•
•
by centrifugal forces
3
/
08
•
•
by explosive forces
3
/
087
•
•
using high energy impulses, e.g. magnetic field impulses [6]
3
/
093
•
•
using vibration [6]
3
/
10
•
Sintering only
3
/
105
•
•
by using electric current, laser radiation or plasma (B 22 F 3/11 takes precedence) [6]
3
/
11
•
•
Making porous workpieces or articles [6]
3
/
115
•
by spraying molten metal, i.e. spray sintering, spray casting [6]
3
/
12
•
Both compacting and sintering (by forging B 22 F 3/17) [6]
3
/
14
•
•
simultaneously
3
/
15
•
•
•
Hot isostatic pressing [6]
3
/
16
•
•
in successive or repeated steps
3
/
17
•
by forging [6]
3
/
18
•
by using pressure rollers [6]
3
/
20
•
by extruding
3
/
22
•
for producing castings from a slip
3
/
23
•
involving a self-propagating high-temperature synthesis or reaction sintering step [6]
