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Steel structure refining process, alloy for steel structure refining and process for producing alloy for the structure refining process
Steel structure refining process, alloy for steel structure refining and process for producing alloy for the structure refining process
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机译:钢结构精炼工艺,钢结构精炼合金和用于结构精炼工艺的合金生产方法
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摘要
The present invention relates to a method for grain refining of steel. A grain refining alloy having a composition FeXY where X is one or more elements selected from the group consisting of Cr, Mn, Si, Ni, and Mo and where Y is one or more oxide and/or sulphide and or nitride and/or carbide forming elements selected from the group consisting of Ce, La, Nd, Pr, Ti, Al, Zr, Ca, Ba, Sr, Mg, C and N where X is between 0.001 and 99% by weight based on the weight of the alloy and where Y is between 0.001 and 50% by weight of the alloy, said alloy additionally containing between 0.001 and 2% by weight of oxygen and/or between 0.001 and 2% by weight of sulphur, said alloy containing at least 10SUP3 /SUPinclusion particles per mmSUP3 /SUPconsisting of oxides and/or sulphides and/or carbides and/or nitrides of one or more of the Y elements and/or one or more of the X elements Cr, Mn and Si in addition to Fe, said inclusion particles having a mean diameter of less than 10 mum, is added to molten steel in an amount of between 0.01 and 5% by weight based on the weight of the steel, whereafter the steel is cast. The invention further relates to a grain refining alloy for steel and to a method for producing grain refining alloys.
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