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| New Technology In The Design Of Roll-Shaped Curve For Regular Four-High Cold Rolling Mill |
| Zhen-Hua BAI Qing-Tian ZHOU |
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Abstract To comnter the problem of complex wave, roller end forced-contract in the process of regular four-high cold rolling mill, After a number of field experiments and theoretical studies ,and considers fully the equipment and the technical characteristics of four-high cold rolling mill, also covers the production needs of a variety of specifications ,sucn as hardness, thickness, width and so on. With the objective of the most evenly to the lateral distribution of forward pull, taking into account the governance issues by pressure of different materials , And even distribution of pressure rollers as a constraint condition, a new scheme to the combination roller design is put forward.The edge wave is removed by the cosine subitem of work roll-shaped curve and the higher degree curve subitem of the edge of backup roll. forced-contract is removed by high-order part of the curve of work roll . The center wave is lessened by the subitem of the concave cosine curve. By optimizing characteristic parameter of the roll-shaped curve ,it can be suitable for the different shape of strip situation. In that case,either complex wave or a single wave-shaped can be abated. In addition, it can alleviate the roll end forced-contract producing in the rolling process.And thus the shape quality of strip will be kept in a stable situation and the wear extent of roller will be reduced. The new scheme is worth further popularizing because of the enormous economic benefits that have been gained.
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Received: 11 January 2010
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2010, Vol. 45 
