IPC Subgroup
C21D 9/54 Furnaces for treating strips or wire
Introduced: September 1968
Last revised: January 2006
Full Title
Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for wires; for strips > Furnaces for treating strips or wire
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY OF IRON
- Subclass:
- MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
5 direct subcodes
Child Classifications
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- C21D 9/56 Continuous furnaces for strip or wire
- C21D 9/64 Patenting furnaces
- C21D 9/66 Tower-type furnaces
- C21D 9/663 Bell-type furnaces
- C21D 9/68 Furnace coilers; Hot coilers