Properties and range of quenching media

Vráblík Filip - ECOSOND s.r.o. (Czech Republic)

Quenching is a very important part of the total heat treatment process and its success. The heat transfer characteristics of the quenchant strongly influence the parts’ microstructure after heat treatment, the resulting mechanical properties of the quenched component but also the amount of internal stresses and distortion.
The choice of the quenchant, its proper use and adaptation to the specific component, heat treatment installation and heat treating process is mandatory to make sure that the heat treated part meets the well defined requirements for safe, consistent and longtime functioning. Last not least an optimized quenching process helps to minimize the costs for heat treatment and rework.
In this paper the main liquid quenching media like quenching oils and polymer quenchants are presented with their physical and chemical properties.
Finally an outlook on the future development of liquid quenchants and quenching technologies is given.

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