In the straightening process, the diameter of the roll is usually larger than the theoretical value calculated when leveling the thinnest strip.
At present, the number of bending rolls is mainly 3 rolls and 5 rolls, the roll diameter is generally between 25-50 m, and there are multiple support rolls to increase the rigidity. There is also a bending straightening machine specially used for thin strips, which is similar to a precision roll. The structure of the straightening machine is used as a bending roller set, the roller diameter is small, and the finest is up to 12.
It should be noted that only when the bending axis and the axis between the bending roller and the outlet tension roller are arranged in parallel accurately, the strip can be evenly extended to level the original shape defect, otherwise it will result in Waves or distortions appear on the edges of the strip.
Therefore, in addition to the need to accurately level the equipment when installing, to ensure the parallel accuracy between the rollers, it is also necessary to ensure that the bending roller set and the straightener frame have sufficient rigidity. In order to achieve this, the front and rear tension roller sets and the straightening frame can be integrally connected by bolts, which is easy to ensure the accuracy of the installation and increase the overall rigidity of the device.
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