基于四辊中厚板轧机，分析了温度、头部沉入、AGC系统、压力传感器和展宽比对中厚板头尾厚度超差的影响。头尾温度过低对厚度偏差影响较大，它使得钢板塑性系数增加，造成钢板头尾厚度增厚，这种影响每道次都存在并与下一道次的结果进行叠加，增大厚度超差的可能性。头部沉入对头部厚度的影响可通过沉入补偿进行消除。咬入阶段AGC系统不投入的影响可通过减小咬钢速度的方法进行部分消除。展宽比过小会加剧头尾厚度增厚，展宽比过大会缓解头尾增厚的趋势。这些分析为今后钢板头尾厚度超差的控制方法提供一定的理论依据。
For plate rolling mill, the influence of slab temperature, head end immersion at biting,use of AGC system, pressure sensor and broadening ratio on oversize in thickness of plate at head and tail ends is analyzed.Low temperature at plate head and tail ends greatly affects the oversige in thickness, because not only of increased plasticity coefficient, but of genetic effect of this influence. The influence of head immersion at biting on thickness of head and tail ends can be removed by immersion compensation. The influence of biting without AGC can be partly reduced by slowing the biting speed. If broadening ratio is too low, the thickness at head and tail ends would be increased,and the thickness would reduced if this ratis is too high. The results afford theoretical base for gauge control at head and tail ends and were proved by practice.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%