Flatness Prediction Method of Six-high Mill with Large Work Roll Length-to-Diameter Ratio and Small Absolute Value of Diameter
A technology of six-high rolling mill and work roll, applied in the field of metallurgy, can solve the problems of inaccurate prediction of the shape of finished strips
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Embodiment 1
[0084] The flatness prediction method of a six-high rolling mill with a large length-to-diameter ratio of work rolls and a small absolute value of diameter, the calculation process is as follows figure 1 Shown:
[0085] First, in step 1, the main equipment parameters of the six-high rolling mill are collected, mainly including: work roll bending force F w =49.5t; intermediate roll bending force F m =88.6t; intermediate roll shifting amount δ c =10.6mm; the distance between the support roll pressing screw and the rolling center line l bl =760mm, l br =760mm; the distance between the work roll bending cylinder and the rolling center line l wl =760mm, l wr=760mm; the distance between the middle roll bending cylinder and the rolling center line l ml =760mm, l mr =760mm; length L of work roll, intermediate roll and backup roll w =450mm, L m =490mm, L b =450mm; Diameter D of work roll, intermediate roll and support roll w =80mm,D m =175mm, D b =350mm; roll type D of wor...
Embodiment 2
[0133] First, in step 1, the main equipment parameters of the six-high rolling mill are collected, mainly including: work roll bending force F w =55.4t; intermediate roll bending force F m =78.2t; intermediate roll shifting amount δ c =8.3mm; the distance between the support roll pressing screw and the rolling center line l bl =760mm, l br =760mm; the distance between the work roll bending cylinder and the rolling center line l wl =760mm, l wr =760mm; the distance between the middle roll bending cylinder and the rolling center line l ml =760mm, l mr =760mm; length L of work roll, intermediate roll and backup roll w =450mm,L m =490mm,L b =450mm; Diameter D of work roll, intermediate roll and support roll w =80mm,D m =175mm, D b =350mm; roll type D of working roll, intermediate roll and backup roll wi 、D mi 、D bi Distribution curve such as Figure 16 , Figure 17 and Figure 18 Shown; strip deviation is δ p = 0mm; the amount of tilting roll is η = 0.03mm;
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