Quenching is a stage in spring steel processing in which the steel strips is subjected to very rapid cooling. steel strips are classically quenched when they are processed, and polymers may also be quenched, depending on the circumstances in that they are being used. The addition of a dip in a quench water to the stages of steel strips processing is quite ancient, as many ancient societies learned that rapid cooling of steel strips could radically alter their performance. They also learned that different media could be used for quenching and cause different results.