Blog
The micro tension control of continuous rolling can improve the efficiency space when the rolling mill works
Release time:
2020/05/19
The r3r4 stand of roughing mill is not the roll of reversible continuous mill section. Since R4 is a 6kV high-voltage synchronous machine with stable speed and can not be adjusted, R3 is a synchronous machine with AC-AC motor speed regulation. The original R3 and R4 continuous rolling micro tension control key is the preset value of R3 speed calculated by the system processor and the rate error value △ n calculated by the rough rolling Ba, which is sent to the rate regulator of R3 drive system control management system to regulate the speed ratio of R3 and achieve the effect of matching with R4 speed.
According to the original information content and target of hot strip, the system processor calculates the preset values of roll gap and speed in each pass of rough rolling system, and transmits the calculation results to basic automation technology. For R3 and R4 continuous rolling, it is required to consider the cycle growth of total flow per second. When R4 is put into operation, the calculation formula of R3 speed is calculated according to the cycle growth rule of total flow per second.
R3 setting rate = r4s total flow rate / (thickness at outlet side x (1 + forward slip))
The system processor only considers the control of the ideal original setting support force of each steel. Generally, the setting rate of R3 steel of the same specification and model in a plan will not change. The change of main parameters in the process of actual cold rolling system is not considered, so it is generally not very accurate. The instantaneous speed rating value needs to be calculated by rough rolling ba.
keywords
Next Page
Next page:
Latest Blog
Contact Information
Tel: +91-98360-44990
Email: kausikjana@meseroy.com
Add: 180, Ho-Chi Minh Sarani, Kolkata- 700 61, West Bengal, India
