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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 1,603 - 1,615 (13page)
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초록· 키워드
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A plane stress model was developed to study the coupled effect of mold taper and corner radius on the thermal–mechanicalbehavior of a 250 mm × 280 mm continuously cast bloom for a given special steel. Good agreement was obtained in both shellthickness and the off-corner cracking location from modeling and trial experiment. The results show that increasing moldtaper results in the obvious decrease of surface temperature near the corner, while enlarging mold corner radius makes theshell surface temperature at the corner region more even with the mold taper between 0 and 1.5% m−1. It is also found thatboth the mold corner radius and taper are the key factors influencing the shell crack sensitivity but with different mechanism. For the internal crack, the mold taper takes more dominant effect for its corner radius between 0–10 mm, as the hoop strainat the solidification front decreases with increasing mold taper. For the surface crack, more sensitivity is noticed to the moldcorner radius. Increasing mold corner radius leads to the increase of the surface hoop strain in the corner region, almostregardless of mold taper. The proper mold taper and corner radius for the present bloom casting should be 1.0–1.5% m−1and 15–25 mm respectively.
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