单辊调整对中厚板矫直质量的影响

Research on the influence of single roll adjusting to the plate straightening quality

现场发现,对十一辊中厚板矫直机在矫直大范围规格的板材时,适量地调整1#辊的位置,可对板材的矫直质量产生良好的影响。通过分析板材在入口辊处矫直过程的受力状态,建立相应的力学模型,分析1#辊位置的调整,对1#辊与2#辊间零弯矩点位置的影响,并结合压弯挠度与相对曲率间的关系,分析1#辊与2#辊间零弯矩点位置的改变,对2#辊处相对反弯曲率产生的影响,从而得出,调节1#辊,可以达到对大范围厚度板材的矫直目的,即对整个矫直质量有重要影响,为实际生产提供了理论依据。

Adjusting the position of 1# roller can improve the straightening quality of the plates when straightening the plates with a wide range of specification on a 11-roller plate level.Through analyzing the force state of the plate near the entrance roller in the straightening process,the corresponding mechanic model of the straightening process was established and the influence to the position of the zero-moment point between the 1# roller and the 2# roller when adjusting the position of 1# roller was analyzed.Combining with the relationship between the bending deflection and relative curvature,analysis was made for the influence to the relative bending curvature near the 2# roller when varying the position of the zero-moment point between the 1# roller and 2# roller.It＇s found that adjusting the position of the 1# roller could straighten the plate with large range of thickness and promote quality.This theoretical basis can give some reference to the actual production.