| 摘要 |
<p>PURPOSE:To reduce the energy loss by finding necessary staying time in a heating furnace from the preheating temp. at charging and the aimed extracting temp., etc., for a cast slab and using the energy for useless heating in a high temp. cast slab in the heating furnace at the time of little difference between the high temp. cast slab and a low temp. cast slab. CONSTITUTION:The steel material is charged into the heating furnace through slab yard after continuously casting. In this case, in the range of ensuring suitable consecutive plate order, the aimed extracting temp. of consecusive plate order (charging order in the heating furnace) shown in figure A is changed to the order, shifting smoothly (figure B). And between (g) material and (c) material developing useless heating (oblique line zone), the cast slab having comparatively low temp. (for example, the cast slab in the slab yard), which is heated up to the aimed extracting temp. for the equal staying time in the heating furnace as (g) material is inserted. In this way, without especially any disturbance to the pitch of rolling and without development of any additional disturbance to the heating furnace, the inputting energy efficiency in the heating furnace is improved.</p> |
