| 摘要 |
The present invention relates to a process for the production of ductile iron comprising the sequential steps of:- (i) treating liquid iron with an i nitialiser comprising an effective amount of a group Ha metal other than Mg, (ii) at a predetermined time after step (i), treating the liquid iron with a magnesium containing nodulariser, (iii) treating the liquid iron with a eu tectic graphite nucleation-inducing inoculant, and (iv) casting the iron. Th e invention allows for the variability of oxygen content in the base iron to be processed such that the mechanical properties of components cast from th e processed iron are independent of the original oxygen content of the base iron.
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