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Control of Strip Tension in a Rolling Mill Based on Loopers and Impedance Control ... The main loads of the looper are its own weight, the weight of the strip, and the forces due to the tension forces and ... Some tandem rolling mills operate with an endless strip .
Director Sales-Tension Control MAGPOWR Understanding Dancer Tension Control Systems. 2 • Manual systems » Closed loop » Open loop • Automatic systems System Types. 3 ck Control adjusts brake torque up or down B Sensor measures tension LC Load Cell System. 4 DANCER CONTROL BRAKE SENSOR POSITION Typical dancer control system
Controlling web tension with load cells: Part 1 of 3. ... Web tension control methods range from feeling and controlling tension by hand to advanced systems that automatically measure and make ...
1. An optimum strip tension control system for a tandem rolling mill having at least a first upstream driven rolling stand and at least a second downstream driven rolling stand defining an interstand distance between adjacent stands and adapted to contain an interstand section of metal strip being rolled, said system comprising means to calculate load ratios of adjacent mill stands as a ...
Jul 12, 2012· Web tension control - loadcells vs. dancer rollers 1. Optimao In control since 1995 Improving the productionprocess through better web tension control 2. The significance of web tension controlWeb tension effect achieved when opposing longitudinal forces are exerted on any substrate(e.g. paper, film, board, cable etc.).
This paper proposes a fuzzy interstand tension control scheme for roughing and intermediate rolling mills to deal with the first problem mentioned above. The proposed scheme detects the changes in the motor current and corrects the motor speed of the upstream stand based on approximate human reasoning to remove speed mismatch.
sensor, and the load on the arm is provided by an air cylinder and pressure regulator. In it's most simplistic format the dancer roll and it's load are suspended by the web tension, and if the tension increases, the roll rises. This signals the system to reduce torque, and thereby tension, so the roll can return to it's original position.
Jun 19, 2017· Once the bar is inside the stand, the control changes back to the mills cascade speed reference. Minimum tension/loop control between stands. Tension/loop control between the stands reduces the material stress along the mill and it helps in improving the dimensional accuracy of the product. Shear cut control for cropping and cutting processes.
May 21, 2012· Installation of Tension Sensing Roller OWECON Load Cell OWL500 for mounting between machine sides. ... Tension Sensing Roller Load Cell OWL500 for tension control ... The Mechanics of Tension ...
Looper and tension control, shown in Fig. 2, is important in hot strip mills because they affect both the dimensional quality and the mass flow of a strip.The high strip tension between stands induces width shrinkage, thickness reduction and moreover can produce an edge wave on a strip.
Tension and Torque Controllers. Unwind, Process (Nip), or Rewind. Montalvo manufactures a wide range of tension controllers that are easy to install, set up and operate with a wide range of features to make your process more productive.
Working with our customers over the years, we have a gained a thorough understanding of your requirements, which, combined with our expertise in new technology led us to develop the leading automation system in the pulp and paper industry, going far .
(1) Skinpass mills and tension levelers used for hot rolling steel sheet There are a skinpass mill and a tension leveler installed on the inlet side of a pickling section of a continuous pickling line (CPL) and a pickling and tandem cold mill (PL-TCM), and also a tension leveler installed in .
Tandem cold rolling process is a nonlinear complex system with external and internal uncertainties and significant disturbances. The improvement in the quality of the final output depends on the control strategy of centerline thickness and interstand tension. This paper focuses on interstand tension control problem in 5-stand tandem cold rolling mills.
The Tension Control bolting system has quickly become the most widely used method of tensioning high strength structural bolts. The ease of use and economic benefits has provided tens of thousands of projects with consistent, reliable, and economical steel connections. The TC bolt is formally recognized by the AISC (American Institute of Steel
THE MECHANICS OF TENSION CONTROL By Jeff Damour CONVERTER ACCESSORY COPORATION Wind Gap, PA USA Introduction This presentation is a basic tutorial in the mechanics of web tension control. We will discuss: 1) What is tension? 2) Why is tension important to me? 3) Where is tension control important in the process? 4) How do tension controls work?
Many of these old mills are still running today as a result of upgraded electrical and hydraulic systems, including hydraulic screwdowns, hydraulic roll bend, and tension control. This book does not focus on these specific rolling mill manufacturers and their various methods of manufacturing and patentability.
Rolling Mill Control. ... Decades of experience an dozens of mills working with our control is the best of the guarantees that we can offer. ... During production the loop and tension control automatically adjust the R- Factor, ensuring minimum material stress between the stands. No matter if you have one strand or two we have the solution for ...
1. Introduction On the modern bar and wire mills inter-stand tension is controlled at rolling [1, 2]. For a variety of reasons, it is impossible to use tension direct control systems that is why tension value is inferred by the rolling motor torque.
Basics of Web Tension Control Summary Presenter: Darrell Whiteside, Sales Channel Manager – Tension Control Maxcess International This presentation is intended to take the mystery out of web tension control. It is intended for operators, designers and engineers who would like a better
Web tension load cell / block type / for web tension control These strip tensiometer load cells can be used for various applications and come with a well-proven design that makes them able to accurately measure, even when used in severe environments. An example application is measuring in tandem cold rolling mills.
(1) Skinpass mills and tension levelers used for hot rolling steel sheet There are a skinpass mill and a tension leveler installed on the inlet side of a pickling section of a continuous pickling line (CPL) and a pickling and tandem cold mill (PL-TCM), and also a tension leveler installed in .
Sensorless Tension Control in Paper Machines M. Aníbal Valenzuela, Senior Member, IEEE, John Martin Bentley, Life Fellow, IEEE, and Robert D. Lorenz, Fellow, IEEE Abstract— Proper operation of the dry end of a paper machine requires some type of sheet tension control. Present systems use either indirect-speed-control-based schemes, or sensor ...
Web tension and control sensors are the input devices used with tension control systems and web guide systems. Nexen's web tension sensors include load cells for measuring the force applied to a sensor roller, roll diameter sensors, and rotary sensors used with dancer systems.
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