Determination of Mould Powder Crystallinity Using X-Ray Diffractometry

摘要

In the continuous casting of steel the surface quality of the cast product is highly dependent upon the horizontal heat transfer between the steel shell and the mould. The horizontal heat transfer is a function of both the thickness and the degree of crystallinity of the solid slag film formed between the steel shell and the water-cooled copper mould. This study is focused on the measurement of the crystalline fraction present in different slag films using two different X-ray diffraction techniques. The results obtained are compared with those obtained from metallographic examination of the slag film. The advantages and disadvantages of different techniques for the measurement of the crystalline fraction of a slag film are discussed.