HYDROGEN PINHOLES IN GRAY CAST IRON.

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作者：
Ferri, R.
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来源：
AFS Cast Metals Research Journal | 1974年 / 10卷 / 03期
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摘要：
Exogenous pinholes arise from mold-metal reaction, while endogenous pinholes form as hydrogen gas accumulates in the residual melt upon solidification. Condition of the sand system and cupola operating conditions largely determine how severe a pinholing problem may be. Hydrogen solubility in liquid iron is affected by carbon and silicon content, as well. In general, steel scrap is more susceptible to hydrogen pickup during melting than refined pig iron.
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页码：129 / 133
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