| abstract |
In the hot process of steel, the scale is suppressed and removed efficiently, and the pickling time of the next process is greatly reduced.n n n In the water-cooling process of the metal material 11 of 100-1200 degreeC, from the pinch roller 2 and the roller 6 or the apron guide 7 of the hot-roller 1 exit side, it is a unit table from the metal material 11 to a unit table. Applying a direct current or alternating current of 0.1 to 105 A / m 2 per area, and / or absorbing the cooling water of pH 2 to 4 into the metal material 11 in the cooling header 4 and the apron guide 7. By removing the scale. |