Tension Control Method of Bar Re-rolling
One of the main objectives of bar re-rolling mills is to get the desired tension variation in the rolling of hot rolled bars. Tension control for the hot rolled bars are essential for the production of good quality bars and in order to achieve this, a tension control method, both dynamic and static, is used.
Dynamic tension control is a kind of automatic steel processing method which can control the tension of hot rolled bars during rolling. The system mainly consists of three parts: PLC, tension sensor and dynamic tension control system. This system can detect the dynamic change of the rolling force, to press the bar and output commands in time, so that the required tension can be realized in the process.
Static tension control is a technology used to adjust the preload level of the rollers to maintain the specified roll tension. The system mainly consists of two parts: pre-load pressure cylinder and control system. The pre-load pressure cylinder is used to adjust the preload pressure of the roll in order to ensure that the desired tension is applied on the rolling bar. The control system is used to monitor the tension feedback and adjust the pre-load pressure continuously so that the dynamic tension can reach the desired level during the rolling process.
Therefore, for the production of good quality bars, using both dynamic and static tension control is essential. The dynamic tension control is used to maintain the required tension during the rolling process and the static tension control is used to maintain the preload level of the rollers. Using these two control methods together will help to ensure that the desired tension is achieved and the desired quality bars are formed.
In conclusion, tension control of hot rolled bars is an important process in producing good quality bars. The use of dynamic and static tension control methods enables the tension to be maintained during the rolling process, thereby helping to produce high quality bars. Thus, the combination of these two control methods is essential for the successful production of bars.
