UNIVERSAL ROLLING METHOD FOR SHAPE STEEL WITH FLANGE

摘要

PURPOSE: To reduce uneven friction on the side of horizontal rolls and to prolong the life of the rolls by lubricating the upper and lower face of the web of a rolling stock or the reduction face of the web of a pair of upper and lower horizontal rolls in a universal rolling mill and also nonlubricating the sides of a pair of upper and lower horizontal rolls. ;CONSTITUTION: A nozzle is arranged in a position symmetrical in up and down and left and right proximately to the web reduction faces 4-2, 5-2 of horizontal rolls 4, 5, in the entrance side for rolling; and a lubricant is injected from this nozzle to the web reduction faces 4-2, 5-2 of the horizontal rolls 4, 5. A nozzle is also arranged in a position symmetrical in up and down and left and right proximately to the upper and lower web faces of a rolling stock ; and the lubricant is injected from this nozzle to the upper and lower web faces. A friction coefficient is reduced between the web face of the rolling stock and the web reduction face 4-2, 5-2 of the horizontal roll; and on the contrary, the side faces of the horizontal rolls are nonlubricated so as not to lower the friction coefficient. Thus, an uneven friction is reduced by a simple means on the side of a horizontal roll affecting the life of the roll, and the long life of a roll is attained.;COPYRIGHT: (C)1995,JPO