WALKING BEAM REHEAT FURNACE DESIGNED FOR REMOVING SCALE

摘要

Walking beam furnace for reheating steel products enabling the products to be reheated to the temperature required for rolling, the furnace being equipped beneath the hearth with a translation frame (1) that can move horizontally and vertically by means of a mechanism, the walking beams being supported by movable keels (15) fixed to the translation frame and passing through oblong openings provided in the hearth (13), stationary beams, supported by fixed keels mounted on the hearth, being inserted between the walking beams. In the zone or zones of the furnace where scale is mainly produced, in particular near the inlet and the outlet of the furnace, the hearth (13) is thicker than in the rest of the furnace. Inclined surfaces (12) are provided in this thicker zone, with a wall slope sufficient to prevent banking-up, so as to collect the scale and the residues and conduct them towards discharge ducts (E) that emerge in water tanks (5) fastened to the translation frame (1) and enabling the scale coming from the discharge ducts to be continuously discharged, while ensuring that the furnace remains sealed.