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作者将50%的低硅球化剂与50%的包头产4稀土镁硅铁合金均匀混合后作球化剂,并与其它7种影响因素一起作了三次正交(共16次)试验,取得了可喜的效果。在本厂生产条件下(原铁水含Si1~1.2%、含MnO.7~0.8%,在处理一吨铁水时,球化剂上面复盖12kg复盖物、铁水温度1400~1410℃),可稳定地生产珠光体含量80~8S%、球化等级1级、无碳化物,σ_1>720N/mm~2、δ>3%的铸态珠光体球墨铸铁,用来生产机床上的要重铸件。
The author will be 50% of the low-silica ball agent and 50% of the Baotou 4 rare earth magnesium ferrosilicon alloy after mixing as a nodulizer, and with other seven kinds of factors together made three orthogonal (16 times) test, obtained The welcome effect. In the factory production conditions (the original molten iron containing Si1 ~ 1.2%, containing MnO7 ~ 0.8%, in dealing with a ton of molten iron, nodulizer covered 12kg coverings, hot metal temperature 1400 ~ 1410 ℃), may Stable production of pearlite content of 80 ~ 8S%, balling grade 1, no carbide, σ_1> 720N / mm ~ 2, δ> 3% of the cast pearlitic ductile iron, used to produce the machine to be re-cast .