The sound of a billet being descaled.
Shot blasting machines are used for descaling billets in readiness for the next operation, which is rolling. Descaling is the process of removing iron oxide scale layers from the hot steel surface by the means of high pressure water jets arranged in a so-called descaling box (or ‘mill descaler’) through which the billets travel.
Metal Ravne is the legal successor to Železarna Ravne. The company's range includes a steel plant programme, which starts the production of all their rolled and forged products. Due to technological modernisation over recent years, the company has all the most important machinery for the production of high-quality steel, including a 45t UHP electric arc furnace, a vacuum ladle furnace and a state-of-the-art ‘teeming pit’ for high-class conventional ingots. Their range of products includes ingots, billets with rounded edges and wide flats, with round, flat and square sections, forged bars, machined forgings, discs, bushes, etc.
Sound recordist: Dušan Oblak
Photographer: Veronika Štampfl
Video recordist: Barbara Grilc