铁液温度对球铁件质量的影响

Influence of Molten Iron Temperature on Quality of Nodular Iron Castings

结合河南、安徽等省二十多家工厂的调研结果,叙述熔炼温度、球化处理温度和浇注温度对球墨铸铁件质量的影响。指出与十多年前相比,冲天炉的熔炼温度和出铁温度提高了30～50℃,温度变化范围大为缩小,铁液含硫量也明显降低,但生产中应采取措施,确保不同铸件有恰当的温度范围。

Linking with the results obtained from investigation of more than 20 works in Henan and Anhui provinces, the influences of melting temperaure, nodularizing temperature, and pouring temperature on quality of nodular iron castings was described.It was pointed out that, compared with the situation of more than ten years ago,the melting and tapping temperature has been raised by 30～50℃, the range of temperature fluctuation has been greatly narrowed,and sulphur content of molten irons has been decreased obviously. However, measures should be adopted to ensure different castings to be poured in their proper temperature ranges.