Quenching steel shaft after heat treatment comprises immersing steel shaft in quenching bath with quenching medium, and circulating quenching medium around steel shaft at specified flow speed

摘要

Quenching a steel shaft after heat treatment comprises immersing the steel shaft in a quenching bath with water or an aqueous solution as quenching medium (3), and circulating the quenching medium around the steel shaft (5). The flow speed of the quenching medium is at least 12 m/s at the site of the shaft. An independent claim is also included for a quenching device for carrying out the above process comprising a quenching bath and a shower arrangement (8) for passing the quenching medium through the bath.