More advanced control systems use tension meters (Zhao et al., 2008) to measure the current strip tension. Choi et al. (2007a) advocate the use of lin-ear model predictive control (MPC) for loopers and strip Strip Mill stand Looper Fig. 1. Tandem rolling mill with ve mill stands. tension as this control approach facilitates a systematic
Read OnFor optimized rolling between stands, loopers maintain a loop to ensure that there is no tension in the rolled material. We maufacture side loopers. Looper and tension control is important in hot strip mills because they affect the strip quality as well as strip threading. Loopers are arranged in the finishing mill area for tension-free rolling.
Read OnUniversal Tension Control System from BTSR. BTSR International, a leading company in the development of innovative solutions for yarn control is to showcase its new Universal Tension Control System and other developments at ITMA Asia + CITME in Shanghai next week. BTSR has combined its Ultrafeeder and Unico technologies to create a new concept ...
Read OnTension control system for universal mill . United States Patent 4003230 . Abstract: A tension control system for use with a universal mill such as an H beam mill, in which a tension force in a billet, to be rolled, between roll stands is controlled so as to be maintained at zero. Providing that effective loads (Pu) are obtained by linearly ...
Read OnTHE 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 …
Read OnCompound control for speed and tension multivariable coupling system of reversible cold strip mill Compound control for speed and tension multivariable coupling system of reversible cold strip mill Fang, Yi-ming; Liu, Le; Li, Jian-xiong; Chang, Ru 00:00:00 To weaken the nonlinear coupling influence among the variables in the speed and tension system of …
Read OnTension is the most common control on web machinery. Good tension control is required to reduce waste and downtime. However, before you can effectively design much less operate tension controls, you must know what tension is best for your process and product. You must also know how much variability is tolerable.
Read OnThe paper discusses the design and application of an innovative tension control looper and presents the analysis and optimization of this system. This allows the improvement of product quality by closer strip tolerances as well as of productivity by means of …
Read Ontension control frequently yields (almost surprising) indirect improvements, particularly on , packaging and other registration type machines. Experienced operators can get the best possible performance out of a marginal tension control system, by various frequent adjustments to that fickle system.
Read OnUniversal Converting Equipment developed closed loop tension control systems to incorporate into their machines. These systems are now available to upgrade other machine types. All our systems rely on closed loop …
Read On3 hp to 125 hp. Interchangeable grinding media options include turbine and screen, pinned disc, and rib track. +44 (0)1625 412000. [email protected] Kemutec's KEK Universal Mills benefit from varied and versatile system …
Read OnLoopers are arranged in the finishing mill area for tension-free rolling. Loopers are of two types Vertical Loopers & Horizontal Loopers. Installation Of loopers in modern steel mill ensures tension free rolling mill bars which in turns decrease …
Read OnWIRE ROD MILLS For a good contact to the customer Wire rod is an all-round talent. From components ... the advanced user-friendly control system ensu-res a high capacity utilisation of the plants and makes ... configurations: Horizontal, vertical, tiltable and universal. The HL concept is thus suitable for roughing, intermedi-ate and finishing ...
Read OnThere are many control schemes such as conventional, noninteractive, LQ, LQG/LTR, H/sub /spl infin// and ILQ control in the looper control system. In this paper, we present the modeling for the looper of a hot strip finishing mill to control the tension of the strip and suggest the noninteractive (cross) and LQG/LTR control method.
Read OnMontalvo is a leader in web tension control with over 70 years of industry knowledge; offering parts, design, and support for your web handling and converting needs.
Read OnImplemented much like dancer controlled system, tension transducer feedback can give very accurate control and permit display of tension but, without some of the benefits of a dancer. Figure H.13 shows a representative method for using …
Read OnFinishing Mill Tension Control System in the Mizushima Hot Strip Mill Keiichi Hamada, Shigeru Ueki, Makoto Shitomi, Katsuhiko Doi, Kozo Ishikawa, Takayasu Okuda Synopsis : At the Mizushima hot strip mill, the tension control system in the finishing mill was replaced to improve dimensional accuracy of strip. In latter stands, conventional loopers
Read OnHDU control upgrade The HDU control system upgrade is an optimization of the pneumatic scanning and control systems for numerous makes of felt and fabric guides in the wire, press and dryer sections. Run-out alarm As the final control element, the run-out alarm prevents fabric damage by monitoring the position of the fabric edge on the
Read OnTension Control Bolts, TC Bolts or Twist Off Bolts are now the most popular choice in high-strength structural bolting and formally recognized by the AISC (American Institute of Steel Construction) and the RCSC (Research Council …
Read Onlooper and tension control system tension looper roll M Fig. 1. Tension and looper control in finishing mills Where, ASR: Automatic Speed Regulator, ACR: Automatic Current Regulator from mass flow unbalance. For example, in the case of low tension, the looper angle increases to get proper tension, resulting in the stable
Read OnControl (Amplifier) System Tension (Machine) Output / tension is influenced only by operator adjustment. To try to keep tension constant as the roll diameter changes, the operator must adjust the control output as he thinks it is necessary. Manual Systems. Example: Driving a car equipped with a sensor that detects
Read Oncontrol. When the tension control switch to the speed control, to cancel the additional speed Δn. In the working process of the coiler, from the strip head into the mandrel set up tension to the strip tail left the last finishing mill, the coiler entered the stage of tension control. Strip tensions are mainly provided between
Read OnThe manufacture of hot-rolled strips 0.8–1.5 mm in thickness as a final product of metallurgical works necessitates strict requirements for gage interference of the strip, namely, with a tolerance of ±5%. The tension variation for such a range of rolled products significantly affects the gage interference. Consideration is given to corrected algorithms for calculation of the torque of an ...
Read OnThe inter-stand tension inferential control systems are used to stabilize the rolling motor torque. To stabilize the motor torque the electric drive system with the properties of the rolling motor ...
Read OnLooper 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 …
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