Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
5
/
02
•
of piston rings
5
/
04
•
of turbine blades
5
/
06
•
of threaded articles, e.g. nuts
5
/
08
•
of toothed articles, e.g. gear wheels; of cam discs
5
/
10
•
of articles with cavities or holes, not otherwise provided for in the preceding subgroups [6]
5
/
12
•
of tubes or wires [6]
7
/
00
Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
7
/
02
•
of composite layers
7
/
04
•
•
with one or more layers not made from powder, e.g. made from solid metal
7
/
06
•
of composite workpieces or articles from parts, e.g. to form tipped tools
7
/
08
•
•
with one or more parts not made from powder
8
/
00
Manufacture of articles from scrap or waste metal particles [6]
9
/
00
Making metallic powder or suspensions thereof
9
/
02
•
using physical processes [3]
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. B 02 C) [3]
9
/
06
•
•
starting from liquid material [3]
9
/
08
•
•
•
by casting, e.g. through sieves or in water, by atomising or spraying (using electric discharge B 22 F 9/14) [3]
9
/
10
•
•
•
•
using centrifugal force [3]
9
/
12
•
•
starting from gaseous material [3]
9
/
14
•
•
using electric discharge [3]
9
/
16
•
using chemical processes [3]
9
/
18
•
•
with reduction of metal compounds [3]
9
/
20
•
•
•
starting from solid metal compounds [3]
9
/
22
•
•
•
•
using gaseous reductors [3]
9
/
24
•
•
•
starting from liquid metal compounds, e.g. solutions [3]
9
/
26
•
•
•
•
using gaseous reductors [3]
9
/
28
•
•
•
starting from gaseous metal compounds [3]
9
/
30
•
•
with decomposition of metal compounds, e.g. by pyrolysis [3]
