针对工程中石墨密度检测的难点，提出一种基于CT的石墨密度均匀性检测方法。该方法通过石墨投影数据的重建，对CT切片进行圆区域的平均灰度值统计，求出各切片层的相对密度，并以3σ标准对其评判。实验表明，该方法可以有效地求出石墨制品内部密度的均匀程度，并对其制品密度的疏松或密集处作出准确判断。

The difficulties of graphite density examination technology were introluced. A graphite density uniformity inspection method based on X-Ray industry computed tomography(ICT) was proposeed. It carried on the average gray level statistics in the round region to the ICT slices and extracted the relative density of the various slices level through data reconstruction of graphite projection, and then evaluated them by 3σ standard. The experiment indicated that it could effectively extract the uniformity level of graphite product interior density and get the accurate judgment of the loose and dense place of the product density.