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美国钢公司的费尔利斯厂为提高半镇静钢的质量和降低钢的生产成本,开发了一种用喷射液体铝的方法生产半镇静钢的技术。其生产工艺为:当将冶炼的沸腾钢钢水浇铸到上小下大的钢锭模内到达绝热板的下方时,停止浇钢并使钢水在钢锭模内沸腾2～3min。而后在向钢锭模内补浇钢水的同时,向钢水铸流中喷射液体铝,使钢水脱氧停止沸腾而形成偏沸腾钢型的半镇静钢钢锭。喷射的液体铝量为0.3～0.4kg/t钢。所生产的半镇静钢用于轧制供深
Ferris’s plant at U.S. Steel developed a technology to produce semi-killed steel by spraying liquid aluminum in order to improve the quality of semi-killed steel and reduce its steel production costs. The production process is as follows: when the smelting boiling steel molten steel is poured into the upper and lower large ingot mold to reach below the insulating plate, the pouring of the steel is stopped and the molten steel is boiled in the ingot mold for 2 ~ 3min. Then pour molten steel into the ingot mold at the same time, to the liquid steel casting liquid aluminum spray, so that the molten steel to stop boiling and oxygen to form a partial boiling steel semi-killed steel ingot. The amount of liquid aluminum sprayed was 0.3 ~ 0.4kg / t steel. Semi-killed steel produced for rolling for deep