METHOD FOR MAKING METAL SHEETS Russian patent published in 2003 - IPC

FIELD: metallurgy, possibly rolling thick sheets. SUBSTANCE: method of manufacturing metallic sheets comprises steps of making slab with rounding radiuses of angles of its one wide face exceeding rounding radiuses of angles of another wide face by 3 - 4 times; then heating slab in heating furnace and rolling it in sheet rolling mill; making on wide face of slab with small rounding radiuses of angles concavity in mean part of its width with smooth rounding of protrusions formed at lateral sides; at heating orienting above mentioned face of slab to side of glissage tubes of heating furnace. Height of concavity consists 0.03 - 0.05 of slab height; width of concave part consists 0.8 - 0.9 of slab width. EFFECT: enhanced uniformity of slab heating. 2 cl, 2 dwg, 1 ex