For high chromium cast iron with structure of preferred orientation, its retained austenite amount can be measured accurately by X-ray method of rotating and tilting specimen holder.
对有择优取向的组织来说，用旋转摆动的X射线法可准确测定高铬铸铁中残余奥氏体的含量。
2
The structures and features the lifting and rotating devices for lance used in molten iron pretreatment in Angangs No. 2 Steelmaking Plant are introduced.