“Double-station quenching” usually refers to a heat-treatment setup with two quenching stations used to cool parts rapidly after heating.

Common meanings:1. Two-part processing line: one station quenches while the other is loading/unloading, improving throughput.2. Sequential quenching: a part is moved through two quench media or two cooling zones.3. Parallel stations: two identical quench units operating side by side for higher capacity.

If you want, I can also explain:- the process principle- equipment layout- advantages/disadvantages- or how it’s used in steel / aluminum / glass / tire manufacturing.