초록 ▼

A method of continuous rolling comprises the steps of: forming a continuous billet 20 by joining a rear end of preceding billet 21 with a front end of succeeding billet 21 by flash-butt welding 3; removing burr on welded portions of the continuous billets 20; then rolling the continuous billet 20 in

A method of continuous rolling comprises the steps of: forming a continuous billet 20 by joining a rear end of preceding billet 21 with a front end of succeeding billet 21 by flash-butt welding 3; removing burr on welded portions of the continuous billets 20; then rolling the continuous billet 20 in a rolling mill line 6; wherein locally cold portions produced by clamping at welding are reheated after removing the burr using a travelling induction-heating unit 5 running at a speed synchronously with a running speed of the continuous billet 20, which travelling induction-heating unit 5 is provided with induction-heating coils arranged at the same distance with that of the locally cold portions.

대표청구항 ▼

[ What is claimed is:] [1.] A method of continuous rolling comprising the steps of:forming a continuous billet by joining a rear end of a preceding billet with a front end of a succeeding billet by flash-butt welding;removing burr on welded portions of the billets;rolling the continuous billet in a

[ What is claimed is:] [1.] A method of continuous rolling comprising the steps of:forming a continuous billet by joining a rear end of a preceding billet with a front end of a succeeding billet by flash-butt welding;removing burr on welded portions of the billets;rolling the continuous billet in a rolling mill line;wherein locally cold portions produced by clamping at welding are reheated after removing the burr using a travelling induction-heating unit which moves at a rate which is synchronous with a movement of the continuous billet, the travelling induction-heating unit having induction-heating coils which are spaced from one another to coincide with the distance between clamped portions which produce the locally cold portions.