Descaling with high pressure nozzles
Descaling of steal in hot rolling processes is an application of high-pressure spray nozzles. The impact force and pressure of theses nozzles can be determined using Newton´s 2nd and 3rd axiom. This allows calculating the impact pressure approximately by a simple formula. Direct measurement of the impact is possible with a force transducer, scanning the area of direct impingement of the spray. Droplet size of the spray jet seems to be a secondary factor, because pure mechanical considerations lead to a sufficient model of the impact.