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CN102527735A 一种中厚板轧制边部均匀变形的控制方法 无效 - 撤回

一种中厚板轧制边部均匀变形的控制方法
摘要：
一种中厚板轧制边部均匀变形的控制方法，属于中厚板轧制技术领域。轧制中控制的技术参数为：粗轧机工作辊的轧辊直径有效使用范围为1020-1120mm，配辊制度为上工作辊直径比下工作辊直径大(0-6)mm；将粗轧机展宽阶段的参数设置如下：最大轧制力8500KN，最大扭矩3200KNm，最大压下量40mm，咬钢速度(1-2)m/s，轧制速度(2.5-4.5)m/s；在以上设备和参数设置条件下，根据展宽比的大小，展宽通常需要3-6道次；展宽第1道次SKI系数设置为+8，此轧辊的速度为线速度；第二道次设置范围为+5～+8。优点在于，减缓钢板边部“上宽下窄”的不均匀变形，实现钢板边部形状的良好控制，从而控制钢板切变量，提高钢板成材率。
摘要（英）：

A method for controlling even deformation of an edge portion in medium-thick board rolling belongs to the technical field of medium-thick board rolling. The technical parameters are that the effective using range of roller diameter of a working roller of a roughing mill is 1020-1120mm, and the roller distribution rule is that diameter of an upper working roller is (0-6)mm larger than that of a lower working roller; and parameters in a widening stage of the roughing mill are that largest rolling force is 8500KN, largest torque is 3200KNm, largest pressing down quantity is 40mm, steel biting speed is (1-2)m/s, and rolling speed is (2.5-4.5)m/s. At conditions of the device and set parameters, widening generally requires 3-6 times according to size of the widening ratio; SKI parameter is set to be +8 in first widening, and the rolling speed is linear speed; and range of a second time is set to be +5-+8. The method has the advantages of reducing uneven upper wide and lower narrow deformation of the edge portion of a steel plate, achieving good control on the shape of the edge portion of the steel plate, accordingly being capable of controlling cutting deformation of the steel plate and improving yield of the steel plate.

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