High-pressure water descaling pilot facility uses Micro-Epsilon thermal imaging cameras

摘要

High-pressure water (HPW) descaling is the process of removing oxide scale by spraying the hot steel surface under a range of moderate- to high-pressure water, using stationary (usually flat jet nozzles) or rotary (rotor descaler) systems. The aim is to remove loose to sticky, primary to tertiary scale under optimum impingement and surface chilling, as well as power-water flow rate consumption. This improves the surface quality of rolled products and minimises work roll wear. Complex solid-fluid, thermomechanical mechanisms are acting through the scale, scale interface and sub-surface of the steel substrate - depending on the descaling process parameters of impact pressure, descaling energy, and temperature.