NUMERICAL SIMULATION OF TEMPERATURE FIELDS IN ELECTROSLAG REMELTING SLAB INGOTS
来源期刊：Acta Metallurgica Sinica2008年第4期
论文作者：B.Z.Li L.Z.Chang
Key words：ESR; Slab ingot; Mathematical model; Shape of molten metal pool;
Abstract: The method based on transient heat transfer model is adopted to simulate electro-slag remelting process.The calculated results of the model show that the process is in the quasi-steady state,and the shape of pool remains unchanged when the height of ingot is approximately 2.5-3 times the thickness of slab ingot.The change in the shape of pool is found to be strongly dependent on the pattern of melting rate,and hence,the power input;the depth of the molten pool increases with the increase in melting speed. It is concluded that a transient heat transfer model has to be used to obtain reliable input information for the entire operating time.
B.Z.Li1，L.Z.Chang1
(1.Department of Metallurgical Technology,Central Iron & Steel Research Institute,Beijing 100081,China)
Abstract:The method based on transient heat transfer model is adopted to simulate electro-slag remelting process.The calculated results of the model show that the process is in the quasi-steady state,and the shape of pool remains unchanged when the height of ingot is approximately 2.5-3 times the thickness of slab ingot.The change in the shape of pool is found to be strongly dependent on the pattern of melting rate,and hence,the power input;the depth of the molten pool increases with the increase in melting speed. It is concluded that a transient heat transfer model has to be used to obtain reliable input information for the entire operating time.
Key words:ESR; Slab ingot; Mathematical model; Shape of molten metal pool;
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