硅是球铁中主要元素,由于它对基体组织和石墨数量起控制作用,故对球铁的物理性能影响很大。在通常采用球化处理工艺中,按要求调整碳量是容易的,但由炉料、球化剂和孕育剂中均含有硅,从而造成硅量控制上的困难。本文叙述了堪萨斯州Farrar公司球铁冲入法处理工艺中采用的、实际上不含硅的铁镁球化剂,可以很容易地控制终硅量,而且能 Silicon is the main element in ductile iron, because it controls the amount of matrix and graphite, so it has great influence on the physical properties of ductile iron. It is easy to adjust the amount of carbon as required in the usual ball-milling process, but silicon is contained in the charge, nodulizer and inoculant, resulting in difficulty in controlling the amount of silicon. This article describes the virtually non-silicon-containing ferromagnetic nodularizer used by Farrar’s Kansas Iron & Iron infiltration process that can easily control the amount of final silicon and