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A SURVEY OF THE LOOPERTENSION CONTROL TECHNOLOGY IN HOT ROLLING MILLS Il Seop Choi∗, Anthony Rossiter∗, Peter Fleming∗ ∗ Automatic Control Systems Engineering University of Sheffield Sheffield S1 3JD, UK cop01iscsheffi
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?
(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 (PLTCM), and also a tension leveler installed in .
Web Tension Controllers by Double E. Double E offers a variety of web tension control systems available using load cells, dancers, ultrasonic sensors, and amplifiers. Load Cells. Double E load cells are designed using a full Wheatstone bridge strain gage mounted to a beam supporting the load .
Jan 18, 1977· A tension control system for use in a continuous rolling mill system comprising a plurality of rolling mills each having horizontal and vertical rolls for simultaneously applying rolling loads on the same section of a billet to be rolled, electric motor means for driving said rolls, means for determining the horizontal and vertical rolling ...
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
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 ...
> Tension Load Cell Brackets are specifically designed for quick installations in new applications ... The data can be used to feed back to the tension control system, to identify potential equipment or bearing ... time on mills being modernized and use as many of .
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 indirectspeedcontrolbased schemes, or sensor ...
Balanced, TensionControlled, and CompressionControlled or Brittle Sections and Failure Q. Define Balanced Sections, TensionControlled Sections, and CompressionControlled or Brittle Sections_ The design provisions for both reinforced and prestressed concrete members are based
Under continual movement, torque will be transmitted accordingly. By controlling the flow of electric current, Brake/Clutch is controlled accurately to move or to stop the rolling process, in order to get the required tension control. The design of Controller VA 816 series is based on direct ratio relationship between electricity and magnetic ...
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 ...
Director SalesTension 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
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 wellproven design that makes them able to accurately measure, even when used in severe environments. An example application is measuring in tandem cold rolling mills.
Tension control bolts, TC Bolts or "TwistOff" bolts, have become one of the world''s most widely used method to tension high strength structural bolts, as they can be used in almost all steelwork connections.
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 high strip tension between stands induces width shrinkage, thickness reduction and moreover can produce an edge wave on a strip.
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.
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( paper, film, board, cable etc.).
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.
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.
WINDER/UNWIND TENSION CONTROL You may know them as winders, rewinds, recoilers or takeups; likewise, you may know them as unwinds, uncoilers or payoffs, but they are all the same subsection of web handling. Winders and unwinds are a critical portion of the web handling process.
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.
of machine and the tension control installed. This should help you choose the right solution, taking into consideration the results you want to achieve. All the product characteristics and dimensions are included for every product. Tension Control Systems Applying the appropriate Tension Control will help you n .
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 .
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