Patent ID: 6089441
Filing Date: 2000-07-18
Classification: B21B,B23K

Abstract:
A method for continuous rolling comprising the sequential steps of:successively rolling a plurality of steel billets by a first rolling mill group;joining a rear end of a preceding rolled steel billet with a front end of a succeeding rolled steel billet by flash-butt welding to form a continuous steel billet having a welded portion, using a travelling welding machine moving at a speed synchronous with a transfer speed of the steel billets;removing burr from the welded portion on the continuous steel billet;continuously rolling the continuous steel billet, after removing the burr, by a second rolling mill group that is located down-stream from the burr-removing step; andcontrolling the transfer speed of the succeeding rolled steel billet by pinch rolls located between the first rolling mill group and the travelling welding machine, the transfer speed of the succeeding rolled steel billet being controlled depending on the size of the steel billet and the distance between the travelling welding machine and the second rolling mill group.