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Influence of Working Lining Parameters on Temperature and Stress Field of Ladle |
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PP: 439-448 |
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Author(s) |
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Gongfa Li, et al,
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Abstract |
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| Ladle is an important apparatus in metallurgical industry and takes charge of transferring molten steel from a converter to
procedure of continuous casting or ingot casting. It not only improves production efficiency, product quality and production flexibility
massively, but also decreases energy and material consumption. The ladle lifetime influences economic benefit of iron and steel enterprises
directly. Distribution of its temperature field and stress field has a vital effect on the lifetime. Thermal expansion stress is one of
important reasons for damage as ladles operate under the condition of high temperature and overload. Under high temperature, thermal
expansion is generated in the ladle lining and shell. Thermal expansion stress is introduced when lining and shell deformation arising
from thermal expansion is subjected to mutual constraint from the counterpart due to various thermal expansion coefficient. The finite
element software is used to establish the ladle model and influence of working lining material thermal conductivity; thermal expansion
coefficient, Young’s modulus and its thickness on the ladle temperature and stress field are studied. The calculation result indicated the
equivalent stress in the ladle enlarged as the thermal conductivity, thermal expansion coefficient, Young’s modulus of working-lining
material increased and the thickness decreased. Research in this paper plays a referring role in comprehending distribution of temperature
field and stress field of the ladle and selecting appropriately physical parameters of lining. The actual operation result indicates
that the research increases the ladle lifetime effectively and shows its wide popularization value. |
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