Conclusions
Radiation methods of control are useful for detecting hidden volume defects in refractories (large pores and cavities) with minimum dimensions of 2.5–3% of the size of the article in the direction of radiation. Overpressing and thermal cracks are detected with openings of 0.15 mm or more, and a depth of spread of not less than 10–15 mm. Such sensitivity is close to actual demands ordinarily placed on refractories testing.
The main parameters of radiation methods for checking refractories are the supply voltage to the x-ray tube, the distance from the source of radiation to the test object, the length of the control section, etc., and these may be selected in accordance with the existing recommendations for radiographie control procedures [5, 7].
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Translated from Ogneupory, No. 8, pp. 6–10, August, 1987.
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Nyun'kin, V.V., Rapoport, Y.M. & Yablonik, L.M. Defect detection in refractories using the radiation method. Refractories 28, 425–429 (1987). https://doi.org/10.1007/BF01400038
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DOI: https://doi.org/10.1007/BF01400038