| 摘要 |
PURPOSE:To enable the straight forward rolling for remote distance by setting the prescribed temp. falling speed and transportation speed so as to satisfy the specified equation by the mean temp. fall of a cast ingot. CONSTITUTION:The cast ingot 5 cast continuously by a continuous casting machine 1 is after being cut by a cutter 3 transferred upto a heating furnace 10 by being placed on a truck 12 via a crane 6. It is then continuously rolled by a rolling mill 11 in a finished product. In this case the temp. fall speed after the delivery of the cast ingot 5 is set less than 2 deg.C/min and the transportation speed at 80-300m/min and the fall quantity DELTATXL/V of the mean temp. is set to satisfy the equation (I) as well. With this method the mean temp. fall of the cast ingot 5 can be secured less than 25 deg.C even in case of transporting the cast ingot 5 for the long distance of more than 1km. The straightforward rolling for long distance is therefore enabled. |
