C | SK | CHEMISTRY; METALLURGY |
C22 | KL | METALLURGY (of iron C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS (general methods or devices for heat treatment of ferrous or non-ferrous metals or alloys C21D; production of metals by electrolysis or electrophoresis C25) |
C22F | UKL | 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 C23 and at least one process covered by this subclass C23F 17/00) |
C22F 1/00 | HGR | 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 B21 , B23 , B24) |
C22F 1/02 | UGR1 | . | in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D 1/76) |
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C22F 1/04 | UGR1 | . | of aluminium or alloys based thereon |
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C22F 1/043 | UGR2 | . . | of alloys with silicon as the next major constituent [4] |
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C22F 1/047 | UGR2 | . . | of alloys with magnesium as the next major constituent [4] |
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C22F 1/05 | UGR2 | . . | of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions [4] |
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C22F 1/053 | UGR2 | . . | of alloys with zinc as the next major constituent [4] |
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C22F 1/057 | UGR2 | . . | of alloys with copper as the next major constituent [4] |
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C22F 1/06 | UGR1 | . | of magnesium or alloys based thereon |
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C22F 1/08 | UGR1 | . | of copper or alloys based thereon |
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C22F 1/10 | UGR1 | . | of nickel or cobalt or alloys based thereon |
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C22F 1/11 | UGR1 | . | of chromium or alloys based thereon |
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C22F 1/12 | UGR1 | . | of lead or alloys based thereon |
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C22F 1/14 | UGR1 | . | of noble metals or alloys based thereon |
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C22F 1/16 | UGR1 | . | of other metals or alloys based thereon |
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C22F 1/18 | UGR2 | . . | High-melting or refractory metals or alloys based thereon |
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C22F 3/00 | HGR | Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons |
C22F 3/02 | UGR1 | . | by solidifying a melt controlled by supersonic waves or electric or magnetic fields |
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