CPC Subgroup
C21D 1/667 for spray quenching
Full Title
General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Quenching devices > for spray quenching
C21D 1/667 General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Quenching devices > for spray quenching