【摘 要】
：
在近20多年间,北美钢铁工业用废钢炼钢已有了较大的发展。1970年,每浇注100吨钢中购买的废钢有30吨,到1986年,每100吨铸钢中废钢数量已增至48吨。废钢量的增加,无疑钢中不利
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在近20多年间,北美钢铁工业用废钢炼钢已有了较大的发展。1970年,每浇注100吨钢中购买的废钢有30吨,到1986年,每100吨铸钢中废钢数量已增至48吨。废钢量的增加,无疑钢中不利元素也会增多。所开展的这一项研究工作是以线材含有某
In the past 20 years, the North American steel industry has made significant development of scrap steelmaking. In 1970, there were 30 tons of scrap purchased per 100 tons of cast steel. By 1986, the quantity of scrap per 100 tons of cast steel had increased to 48 tons. Increasing the amount of scrap, steel will undoubtedly increase the negative elements. The research carried out is based on the wire containing a
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