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Effect of Magnesium on Characteristics of Thermal Analysis Curve of Compacted Graphite Iron

The influence of residual magnesium on compact graphite rate and characteristic of thermal analysis curve was studied by fading of magnesium treated molten iron. The results indicate that with fading time, the residual magnesium decreases and the rate of compact graphite increases. The content of magnesium can remarkably change the characteristics of thermal analysis curve, such as the lowest eutectic temperature (TEU) and the recalescence degree △Tr.