INFLUENCE OF MOULD ROTATION ON MACROSEGREGATION IN INGOT

Acta Metall Sin

1988, Vol. 24

Issue (5): 379-384 DOI:

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INFLUENCE OF MOULD ROTATION ON MACROSEGREGATION IN INGOT

YU Qiuping;ZHOU Yaohe Northwestern Polytechnical University; Xi'an

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YU Qiuping;ZHOU Yaohe Northwestern Polytechnical University; Xi'an. INFLUENCE OF MOULD ROTATION ON MACROSEGREGATION IN INGOT. Acta Metall Sin, 1988, 24(5): 379-384.

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Abstract The macrosegregation formation in an ingot and the influence of rotat-ing mould upon it were analysed on the basis of the interdendritic flow. When theingot mould rotates unidirectionally, the centrifugal volume force acts on all innerparts and when the ingot mould rotates attenately, the tangential alternate force isalso formed, and both have various influences on the different modes of interden-dritic flow. It is shown that as the ingot mould rotates unidirectionally or alterna-tely with moderate angular speed, the interdendritic unstable flow may be control-led effectively and the formation of segregation may be restrained. Thus, it seemsto be significant for reducing the segregation such as A-type, etc., in the steel in-got.

Key words: ingot macrosegregation interdendritic flow

Received: 18 May 1988

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