The removal of scale from the surface of a metal, especially from the inner surfaces of boilers etc
It is necessary to remove the scale from hot rolled bars or coil before bright drawing This is normally carried out by shot blasting or pickling in acid Other methods of descaling steel products include sand blasting, flame descaling and tumbling
Subjecting oxide annealed austenitic and high allot steel to an oxidizing or reducing salt bath to produce more readily a scale-free surface when pickled in a subsequent step
A process that removes the oxide scale from the surface of the stainless steel that developes from hot operations