5.1 Hardening
For martensite hardening according to this Process Specification continuous
equipment with protective atmosphere is used, e.g.
roller hearth e quipment with quenching chute and conveyor
roller hearth equipment with lowering platform
roller hearth equipment e.g. with flooding system.
Notes:
New units must be equipped with lowering platform or flooding system.
In the flooding system the quenching agent flows around the components,
simultaneously the roller conveyor reverses (at least at the beginning of
quenching), thus making also the parts to be heat treated reverse.