| 摘要 |
PURPOSE:To perform stable passing-through of a strip, by setting the center flat part length by the minimum plate width and the maximum plate width at the low temperature side and the high temperature side, respectively, and so that an angle of inclination of the tapered part becomes tight at the low temperature side. CONSTITUTION:A titled method is a setting method of a profile of a narrow body type hearth roll placed in a vertical continuous annealing furnace. At the low temperature side of a strip temperature, the center flat part length F of the roll is set so that F/Wmin is 1.6-4.5 and a tapered part inclination l/S is 100- 200, and at the high temperature side, the center flat part length F is set so that F/Wmax is 1.5-2.7 and a tapered part inclination l/delta is 150-330. Provided that Wmin; Wmax; l; and delta denote the minimum width of a passing-through strip, the maximum width of the passing-through strip, horizontal length of the tapered part, and height of the tapered part, respectively. |
