Mould lubrication and friction behaviour with hydraulic oscillators in slab continuous casting

Mould lubrication and friction behaviour with hydraulic oscillators in slab continuous casting

It is very important to obtain reliable lubrication from casting powder both at the meniscus and in the gap between strand and mould as it affects slab surface quality and caster productivity. With knowledge of mould friction, a quantitative insight into the behaviour of powder during caster operati...

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Veröffentlicht in:Ironmaking & steelmaking 2010-02, Vol.37 (2), p.112-118
Hauptverfasser: Ma, Y., Wang, X. D., Zang, X. Y., Yao, M., Zhang, L., Ye, S. H.
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Sprache:eng
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CONTINUOUS CASTING
HYDRAULIC OSCILLATOR
MOULD FRICTION
SLAB
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container_end_page 118
container_issue 2
container_start_page 112
container_title Ironmaking & steelmaking
container_volume 37
creator Ma, Y.
Wang, X. D.
Zang, X. Y.
Yao, M.
Zhang, L.
Ye, S. H.
description It is very important to obtain reliable lubrication from casting powder both at the meniscus and in the gap between strand and mould as it affects slab surface quality and caster productivity. With knowledge of mould friction, a quantitative insight into the behaviour of powder during caster operation is possible. In the present research, the friction was studied based on a slab continuous caster equipped with hydraulic oscillators. The effects of mould oscillation and the abrupt change of casting speed on mould friction force were evaluated, and the characteristics of lubrication behaviour in a casting sequence were investigated. In particular, a comparison between the mould friction force between sinusoidal oscillation mode and non-sinusoidal oscillation mode was made. Finally, the characteristics of friction before a breakout are discussed. The experimental and analytical results may contribute to the development of mould friction online measurement and more clearly learn the lubrication behaviour in different conditions.
doi_str_mv 10.1179/030192309X12549935902347
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subjects CONTINUOUS CASTING
HYDRAULIC OSCILLATOR
MOULD FRICTION
SLAB
title Mould lubrication and friction behaviour with hydraulic oscillators in slab continuous casting
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