X-RAY DETECTION OF RESIDUAL CERAMIC MATERIAL INSIDE HOLLOW METAL ARTICLES

摘要

2131811 9320970 PCTABS00027 A hollow metal article can be made by casting a metal article around a ceramic core and leaching the core from inside the article. These steps form a hollow space in the shape of the ceramic core. An x-ray detectable agent that has a higher x-ray density than the ceramic core is introduced into the core. Any core remaining inside the article after the leaching step is detected by making and analyzing an x-ray radiograph of the article.