| 摘要 |
<p>Individually controllable water sprays form a strip cooling zone at a runout table between the end of a hot strip finishing train and a coiler. The times required for successive sections of the strip to traverse the runout table (designated residence times) are calculated from a predetermined strip velocity-time profile. Using the residence times, the finishing train temperature and the desired coiling temperature, the number of sprays required to reduce the strip temperature from the finishing train temperature to the desired coiling temperature is determined as a function of the average velocity of the individual strip section. The distribution of the number of sprays thus determined is then calculated so as to provide a substantially constant rate of cooling which may be varied in accordance with individual requirements. The spray patterns are changed to coincide with the movement of the sections across the runout table.</p> |
