Our customers well aware that there are two requirements for the coefficient of rolling mills: one is the utilization coefficient, and the other is the stiffness coefficient. What do these coefficients mean? How are they calculated? Today, Tangshan Rolling Mill Equipment Manufacturer is here to explain them to you.

The rolling mill utilization coefficient refers to the ratio of the theoretical rolling rhythm achieved in practice by the rolling mill to the rolling rhythm itself. It is typically used to reflect the extent of disarray in the rolling rhythm of the rolling mill and the difference between the actual hourly output and the theoretical hourly output.

During non-stop rolling mill operations, time loss is the fundamental cause of an imbalanced rolling rhythm, with numerous factors contributing to time loss. On one hand, it could be due to operator errors, such as failure to feed billets into the die, slippage of billets, and unsuccessful steel reversal. On the other hand, delays may arise from disharmony in the preceding and subsequent processes; another factor is time loss caused by shutdowns during the production process.

In summary, the higher the utilization coefficient of the rolling mill, the better its utilization level and the more advanced its operational technical skills. On the other hand, it indicates poor usage of the rolling mill and low operational technical proficiency. To enhance the utilization of the rolling mill, it is not only necessary to improve operational technical skills and mechanize and automate the production process; but also to reduce the impact of human factors on the fluctuation of the rolling rhythm, and to strengthen the harmonious coordination between the upstream and downstream processes.

The rolling mill stiffness coefficient represents the rolling force required to produce a unit longitudinal elastic deformation in the rolling mill, i.e., the slope of the rolling mill's elastic curve. This parameter can be verified based on the slope of the rolling mill's elastic curve.

In practice, due to the temperature rise of the rolls and the entire rolling mill under load, the roll gap varies and becomes a variable value. The roundness of the rolls and installation errors also cause high-frequency periodic changes in the longitudinal thickness of the rolled material. Therefore, to improve the accuracy of workpiece thickness control, the stiffness coefficient of the rolling mill is generally obtained through on-site measurements.

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