CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR...
C22F
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C 22 F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C 23 and at least one process covered by this subclass C 23 F 17/00)
Note
In this subclass, it is desirable to add the indexing codes of subclass C 22 K. The indexing codes should be unlinked. [6]
1
/
00
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B 21, B 23, B 24, e.g. shot-peening apparatus
B 24 C)
1
/
02
•
in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C 21 D 1/76)
1
/
04
•
of aluminium or alloys based thereon
1
/
043
•
•
of alloys with silicon as the next major constituent [4]
1
/
047
•
•
of alloys with magnesium as the next major constituent [4]
1
/
05
•
•
of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions [4]
1
/
053
•
•
of alloys with zinc as the next major constituent [4]
1
/
057
•
•
of alloys with copper as the next major constituent [4]
1
/
06
•
of magnesium or alloys based thereon
1
/
08
•
of copper or alloys based thereon
1
/
10
•
of nickel or cobalt or alloys based thereon
1
/
11
•
of chromium or alloys based thereon
1
/
12
•
of lead or alloys based thereon
1
/
14
•
of noble metals or alloys based thereon
1
/
16
•
of other metals or alloys based thereon
1
/
18
•
•
High-melting or refractory metals or alloys based thereon
3
/
00
Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
3
/
02
•
by solidifying a melt controlled by supersonic waves or electric or magnetic fields
