| 摘要 |
PURPOSE:To permit the sure and efficient joining of rolling materials by providing a joining device which superposes and press-welds the rear end of the preceding rolling material and the front end of the succeeding material on the inlet side of a rolling mill. CONSTITUTION:Plural rows of grooves 10 and projecting lines 12 are formed atop the preceding rolling material S2 by projecting parts 5a formed on one die 5 during the passage of the material S2 through a pair of rotary dies 5 and 6. The similar grooves 11 and projecting lines 13 are formed on the bottom surface of the succeeding rolling material S1 by the projecting parts 6a formed to the other die 6. The materials S1, S2 are superposed by a superposing device 4 in such a manner that the grooves 10, 11 and projecting lines 12, 13 are fitted to each other and are press-welded between rolling rolls 2 and 2. The sure and efficient joining of the rolling materials is thus made possible. |
