Speaker
Description
Work roll cooling is one of the most important actuator to control roll degradation in a hot rolling mill. Besides pressure and flow rate, the influence of cooling water composition is of high importance to avoid excessive work roll degradation. However this actuator is very often underestimated in most of the hot strip mills worldwide.
The development of a lab equipment simulating work roll degradation enabled to compare the impact of rolling parameters on work roll degradation. This paper will give an overview of the influence of several elements present in water used in direct roll cooling (e.g. chlorides, sulphates, bactericide, phosphates) on work roll surface degradation.
Besides lab analyses, on-site examinations of worn work rolls enable to determine degradation mechanisms and highlight the main influencing parameter. The link between strip surface defects and work roll degradation has highlighted corrosivity of cooling water as a main contributing factor in several cases. This paper will illustrate those cases.
Summary
Work roll cooling is one of the most important actuator to control roll degradation in a hot rolling mill. Besides pressure and flow rate, the influence of cooling water composition is of high importance to avoid excessive work roll degradation. However this actuator is very often underestimated in most of the hot strip mills worldwide.
The development of a lab equipment simulating work roll degradation enabled to compare the impact of rolling parameters on work roll degradation. This paper will give an overview of the influence of several elements present in water used in direct roll cooling (e.g. chlorides, sulphates, bactericide, phosphates) on work roll surface degradation.
Besides lab analyses, on-site examinations of worn work rolls enable to determine degradation mechanisms and highlight the main influencing parameter. The link between strip surface defects and work roll degradation has highlighted corrosivity of cooling water as a main contributing factor in several cases. This paper will illustrate those cases.
| Speaker Country | Belgium |
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