with direct resistance heating

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 > Continuous furnaces for strip or wire > with direct resistance heating

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