Production of low-nitrogen and low-oxygen steel and alloy
专利汇可以提供Production of low-nitrogen and low-oxygen steel and alloy专利检索，专利查询，专利分析的服务。并且PURPOSE: To prevent the nitrogen absorption at the tapping and obtain the clean steel (alloy) by spraying the specific amount of carbon materials into the molten steel (alloy) flow from an electric furnace and the molten metal in a heating vessel, then blowing non-oxidative gas into the vessel and performing de-oxidation treatment while limiting the N
2 concentration.
CONSTITUTION: Carbon materials such as powdery (particulate) coke and graphite electrodes are sprayed at 0.6kg/t or more as pure carbon contents into the molten steel (alloy) flow of C 2 in the molten metal and the FeO in the slag to react with C to form CO which encloses the inside of the vessel and the entire part of the tapping flow and cut them from the atmosphere, thereby preventing nitrogen absorption. AT the same time, denitrification is caused by the vigorous stirring of the tapping flow and the bubbling action of the CO gas. Next, non-oxidative gas such as Ar is blown into the vessel to maintain the N
2 concentration in the vessel at 5% or less, thus deoxidation treatment is done while suppressing the nitrogen absorption.
COPYRIGHT: (C)1980,JPO&Japio，下面是Production of low-nitrogen and low-oxygen steel and alloy专利的具体信息内容。
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