结合设备特点、产品宽度控制手段以及宽度控制理论，详细分析了2250 m m热连轧生产线的成品宽度尺寸波动的影响因素。通过对定宽机的短行程控制消除头尾宽展的异常变化，以板坯宽度尺寸的测量消除来料宽度尺寸波动的影响，以精轧张力控制以及立辊的自由张力控制系统的优化消除头尾拉窄现象，有效地解决了宽度控制中存在的问题。
Combined with the characteristics of the equipment ,product width control measures and width control theory ,factors influencing the product width dimension in the 2250mm rolling line have been particularly analyzed . Lateral width elongation abnormal change has been expired by the short stroke control of slab sizing press ,the width fluctuation of the coming slab has been removed by width measuring and the necking of the head end and the tail end has been eliminated by the finishing mill tension control and the optimization of the free tension control system of the edger roll .The existed problems in the width control have been effectively solved through the above measures .
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