The paper introduce the impurities origination including internal and external impurities, and pays more attention to re-oxide, rolling slag and inner-lining erosion.
介绍了夹杂物的来源，包括内生夹杂和外来夹杂，着重于二次氧化产物、卷渣、内衬侵蚀。
The experimental results have showed that, adding about 5% re oxide slag to cupola charges, the tensile strength of the cast iron can raise grad...
试验表明，冲天炉批科中加入5%左右的稀土氧化法，能使铸铁件的抗拉强度提高大约半个多牌号。
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