| 摘要 |
PURPOSE:To reheat the end part of an ingot up to the temp. suited for hot rolling, by disposing an ingot cover which encloses the end part of the ingot liable to a temp. drop on the downstream of an ingot cutter, heating the ingot and moving the ingot cover in synchronization with the ingot. CONSTITUTION:A continuous casting ingot 20 traveling on a roll 28 is inserted into the combustion heating chamber in an ingot cover 44, and burners 50 are directed to the end part of the ingot 20. The cover 44 is connected by means of a connecting plate 46 to the carriage 34 of a gas torch 36. When the cutting of the ingot 20 with a gas torch 36 is started, the carriage 34 travels in synchronization with the ingot 20, and the cover 44 travels as well in synchronization with the ingot 20 by enclosing the same. A series of the burners 50 are ignited to liberate high temp. gases toward the combustion heating chamber. The combustion gases flow into the radiation accelerating plate 52 disposed in the cover 44 to subject the upper, lower and lateral parts of the ingot 20 to heat exchange with high efficiency, whereby the areas near the end part of the ingot 20 are heated additionally from both above and below and are reheated up to the temp. suited for hot rolling. |
