研究了钒对中硅耐热铸铁的组织及常温机械性能的影响，对钒在中硅铸铁中的存在状态和作用进行了探讨。

The influence of V on the structure and properties of medium silicon cast iron at room temperature are investigated. The existing forms and the function of V is discussed.

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依据铸铝坩埚的服役条件，制造工艺和成本要求，选择中硅耐热球铁取代普通灰口铸铁制造铸铝坩埚。

Medium silicon heat-resisting nodular cast iron has been chosen instead of common grey iron to make cast aluminium crucible according to the work condition. making process and cost of the crucible.

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采用X-射线衍射仪、透射电镜研究了可锻铸铁白口组织中硅对共晶渗碳体点阵参数、晶胞体积及晶体缺陷的影响。

The effect of Si on the crystal lattice parameters, lattice volume and crystal defects of the eutectic cementite in malleable cast iron has been studied by using X ray diffractometer and TEM.

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