Rev. Met. Paris
Volume 104, Number 2, February 2007Aciérie
Laminage à chaud
Utilisation de l'acier
|Page(s)||84 - 90|
|Published online||28 February 2007|
Hydraulic descaling improvement, findings of jet structure on water hammer effect
New dynamic features of the descaling process are reported, referring to the continuous water jet formed by the descaling nozzle in particular. A water jet is formed by clusters of droplets moving at high velocity. In the impact area, pressure peaks of several hundred MPa, lasting microseconds per peak are observed: this is described as the “water hammer” effect. This finding modifies most existing concepts of descaling and the impact on current theory is discussed.
© La Revue de Métallurgie, 2007
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