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Effect of backup roll on roll

Author:Jiangyin roll machinery co. LTD Publications: 13/03/2018 Click:
The influence of the radius of the backup roll is that the larger the radius of the backup roll, the greater the stiffness of the rolling mill. With the increase of the radius of the backup roll, the amount of roll deformation decreases linearly. The increase in the width of the rolling stock increases the deformation of the roll. There is no change in the thickness of the inlet and the outlet, which increases the total rolling force and aggravates the deformation of the roll.The effect of the work roll radius is opposite to the effect of the support roll radius.The larger the work roll radius, the greater the Y s. From the calculation results, due to the increase of the work roll diameter, the contact arc length is increased, so that the total rolling force is increased, the backing roll deflection is increased, and the center center flattening and work roll center flattening are increased. There is a good linear relationship between Y s and the radius of the work roll, and as the width of the rolled piece increases, the amount of roll deformation also increases, and the relationship is basically linear.
      The influence of the backing roll crown, the larger the backing roll crown, the greater the Y s, and there is a good linear relationship between Y s and the backing roll crown. This is because the increase in the backing roll crown makes the rolls flatten As the amount increases, the deflection of the backup roll and the flattening change of the work roll are relatively small. On the other hand, as the width of the rolled piece increases, the amount of roll deformation also increases, and the relationship is basically linear.・
      The influence of the work roll crown has a linear relationship between the work roll crown and Y s for a certain roll width. However, when the roll width is less than about 1.9 m, the greater the work roll crown, the Y s also The larger the width of the work roll is greater than about 1.9 m, the greater the crown of the work roll is, the smaller the Y s is. When the width of the rolled stock is approximately 1.9 m, Y s is basically independent of the crown of the work roll. According to the calculation results, the increase in the crown of the work roll increases the amount of flattening between the rolls, but at the same time reduces the deflection of the backup roll. Within a certain width, the change in the flattening amount between the rolls is greater than the deflection of the backup roll Variations, beyond this range, the change in the amount of flattening between the rolls is less than the change in the deflection of the backup roll, and the flattening amount of the work rolls has basically no effect on the rolling force. The width of the rolled piece is 1.9 m. There is a good linear relationship between the braking force and Y s

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