鉄鋼用 X 線断層撮影装置の開発

概要

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X-ray computed tomography is extensively used in medicine, but has rarely been applied to non-medical purposes. Steel specimens pose particularly difficult problems-very poor transmission of X-rays and the need for high resolving capability. There has thus been no effective tomographic method of examining steel specimens. Due to the growing need for non-destructive, non-contact methods for observing and analyzing the internal conditions of steel microscopically, however, we have developed an X-ray Computed Tomographic Scanner for Steel (CTS) system, specifically for examination of steel specimens. Its major specifications and functions are as follows. Type : the second-generation CT, 8-channels, Scanning method : 6° revolution, 30-times traversing, Slice width : 0.5 mm, Resolving capability : 0.25×0.25mm, X-ray source : 420kV, 3mA, X-ray detector : BGO scintillator, Standard specimen shape : 50mm dia., 100mm high, Measuring time : 10.5 min. Porosity of a stainless steel (SUS 304) bloom was examined three-dimensionally by the CTS system. Corrosion procedure of a steel slab was also examined.
社団法人日本鉄鋼協会の論文
1985-10-01