| 摘要 |
<p>A method for preparing metal billets from blanks (5) and an installation comprising a reheating furnace (2), means (10) for advancing the blanks (5, 51) one behind the other along a straight path passing through the furnace (2), and hot shears (3) defining a shearing plane (Q) placed after the exit from the furnace (2). …<??>The possible passage of the joint plane (6) between the blank (5) being cut and the following blank (51) is monitored in a fixed reference plane (P) intersecting the path of the blanks at a point placed at a distance (Y) upstream of the shearing plane (Q) at least equal to the length (b) of a billet, and, if such a passage is registered, the length (X) of advance of the blank (5) is continuously measured from this instant until the said blank stops for shearing, the remaining length (a = Y-X) of the blank (15) being cut is then calculated, then the forecast length of the rest (c = a-nb) after the cutting of a whole number (n) of billets of normal length (b) and the said remaining length (C) is compared with a given limit (I) for controlling the removal of the small butts of a length which is less than the said limit. …<IMAGE>… </p> |
