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为了减少浇注后期由盛钢桶炉渣落入钢水带进的夹杂物,日本新日铁广烟厂试验了“漂浮闸门”法。滑动水口并不能经常保证阻止渣子落入中间包。因此在装滑动闸门的水口上方放置一个漂浮闸门,以便随着钢水面的下降,闸门下落到盛钢桶桶底。漂浮闸门是一种有导卫装置的圆盘。圆盘直径420mm(比水口直径大3倍),平均比重为4.0(心部用金属,外包铝氧土耐火混凝土),是钢水和炉渣比重的中间值。漂浮闸门在浇钢结束前10
In order to reduce the inclusion of ladle slag into the molten steel in the late pouring stage, Japan’s Nippon Steel & Tobacco Guangyan Chang experimented with the “floating gate” method. Sliding gates are not always guaranteed to prevent slag from falling into the tundish. Therefore, a sliding gate is placed above the nozzle of the sliding gate, so that the gate falls to the bottom of the steel drum as the molten steel surface drops. Floating gate is a kind of disk with guide guard. The diameter of the disk is 420 mm (three times larger than the diameter of the nozzle) and the average specific gravity is 4.0 (heart metal, outsourced alumina refractory concrete), which is an intermediate value for the specific gravity of molten steel and slag. Floating gate at the end of pouring steel 10