JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
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Occurrence Mechanism and Prevention Method of Longitudinal Surface Cracks Near Slab Corner in Continuous Casting
(Development of Variable Multi-Tapered Mold for High Speed Casting)
Yoshiyuki MATOBAKazuo OKAMURAToshihiko MURAKAMIKenji YAMAMOTO
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2005 Volume 48 Issue 3 Pages 163-170

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Abstract

The mechanism of the occurrence of longitudinal surface cracks near slab corner has been investigated based on both the thermal stress analysis of solidifying shell in the continuous casting mold and experimental consideration. In the stress model, the coupling between thermal deformation of the shell and temperature distribution in the mold wall was taken into account. It is cleared that the conventional constant-tapered mold is insufficient to prevent the cracks. By applying a newly developed variable multi-tapered mold, which was designed from the stress analysis, the high-speed castings of 5m/min have been put into practice without corner cracks.

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© 2005 by The Japan Society of Mechanical Engineers
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