Best water temperature for quenching steels !
Best water temperature for quenching steels !
(OP)
I had a hot discussion with a co-worker about the best temperature of the water for quenching steels parts !
Is it more or less than 30 °C ?
Any help ?
Thanks
Is it more or less than 30 °C ?
Any help ?
Thanks





RE: Best water temperature for quenching steels !
RE: Best water temperature for quenching steels !
RE: Best water temperature for quenching steels !
I have not failed. I've just found 10,000 ways that won't work." — Thomas Edison
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RE: Best water temperature for quenching steels !
In general, you may find limits of 100-105F in the literature (37-40 C). This is a result of a vapor blanket that forms around the part. At water temperatures below 85 F (30 C) or so, this vapor blanket is not very stable and neucleation boiling occurs, rapidly removing heat. At higher temperatures, however, it can form an insulating barrier around the part, greatly lowering the heat transfer rate. The middle ground (85-105 F or 30-40 C) is usually the range where a water quench will begin to give variable results.
Of course, there are many variables that affect the stability of this vapor blanket, one of which is temperature. With spray quenching, for example, no vapor blanket is formed if the spray is strong enough. Quechant vendors also offer additives that can raise the temperature at which it becomes a problem.
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