See other industries within the Manufacturing sector: Aerospace Product and Parts Manufacturing, Agriculture, Construction, and Mining Machinery Manufacturing, Alumina and Aluminum Production and Processing, Animal Food Manufacturing, Animal Slaughtering and Processing, Apparel Accessories and Other Apparel Manufacturing, Apparel Knitting Mills, Architectural and Structural Metals ...
Material tracking is an important part of the automation control system which has a major impact on the product quality. This paper addresses a stand load identification in wire rod mill as a new ...
tension, speed Roll force, torque, temperature CVC, HS, position bending Coildata Operatortrims Scheduling 400 350 300 250 200 150 100 50 0 0 1 2 Log deformation Yield stress 3542 Rolling mill applications covered by ABB include: Single and multistand Mills Cluster and Sendzimir*) Mills Inline and continuous rolling mills Reversing ...
Results of Tension Control The looperless rolling system was applied to the tensions t 1 and t2' shows the results of online control of tension tl' which the desired tension ( 1 kg / mm2 ) within 1 to 2 sec. after the top of the strip passes the second stand. This rise time is several times faster than that of looper.
The control scheme realizes decentralization and coordination of the tensionlooper system and allows easy implementation to actual mills. The control scheme was applied to the No. 3 Hot Strip Mill at Chiba Works of Kawasaki Steel Corporation and has been in full commercial operation since 1995. 2. Tension control in hot strip finishing
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. However, it does make the mass flow more stable and hence ...
Theoretically, P 20 is a difference between P 2 and the load caused by the tension but where the load variation due to the tension is small, equation 3 holds. ... Interstand tension control for tandem cold rolling mills USA (en) * : : ...
The interstand tension control is one of the most important ways to meet tight tolerances for strip product quality during tandem cold rolling process. ... Design of a faulttolerant outputfeedback controller for thickness control in cold rolling mills. 2020, Applied Mathematics and Computation ... Interwire wear and its influence on contact ...
The problem is most severe at low speed, since load disturbances of a given magnitude produce larger perunit speed disturbances at lower speeds. The interstand tension change is proportional to the change in interstand strain which results from changes in the ratio of adjacent stand speeds. ... Optimum strip tension control system for rolling ...
Tension is the bolt load/force due to stretching of the bolt and is measured in Newtons (N) or more widely in kiloNewtons (kN). When shearoff torque, ... Tension Controlled Structural Bolt/ Nut/Washer Assemblies, Steel Heat Treated to 150 ksi Minimum Tensile Strength', and
gain factor from engineering unit [N] to per normal web tension, 1. Introduction. A web transport system (WTS), which handles a continuous strip or web, can be found in many industries such as steel mills, paper mills, plastic and textile industries. A WTS usually consists of n+1 rollers with n tension zones.
What is claimed is: 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 ...
Tension and looper control in finishing mills Where, ASR: Automatic Speed Regulator, ACR: Automatic Current Regulator from mass flow unbalance. ... developed a tension meter using load cells and applied it to width control problems whereas some approaches suggested the use of soft sensor based on estimation theory to control strip tension ...
Fig 1 Thickness control in a single stand cold reversing mill. For the single stand cold reversing mill, the external controllers are (i) the tension control by torque (TCT) in which the entry / exit tensions are kept constant through the torque regulated by the TC that, in turn, exploits the motors applied to the coiler / uncoiler reels, (ii) the gauge control, feedback via gap (GBG) in ...
See other industries within the Manufacturing sector: Aerospace Product and Parts Manufacturing, Agriculture, Construction, and Mining Machinery Manufacturing, Alumina and Aluminum Production and Processing, Animal Food Manufacturing, Animal Slaughtering and Processing, Apparel Accessories and Other Apparel Manufacturing, Apparel Knitting Mills, Architectural and Structural Metals ...
Llh : change of delivery gage caused by LIS Mil: mechanical rigidity of tension bar Q: gradient of plastic curve of strip Tv: time constant of servovalve k: control factor TL : time constant of load cell KA : servoampli fier gain Fig. 3. Block diagram of positioncontrolled hydraulic mill Research Article
If the mill rolls 800,000 tons per year, it runs at an average production rate of tons/hour. If the utilization can be improved by 1 %, the available rolling hours is 365 x 24 x =, creating extra rolling hours. At tons/hour that is an additional 10,000 tons can be rolled.
Advantages of the LCM control. Reproducibility of the production data. Traceability of production and process data. Visualization of the warp thread tension. Fabric data storage. Easy to use. Network compatible. Remote access for monitoring and optimization. Communication: CAN (RJ45) or EtherCAT® (RJ45), RS232 (WE series 7015B)
See other industries within the Manufacturing sector: Aerospace Product and Parts Manufacturing, Agriculture, Construction, and Mining Machinery Manufacturing, Alumina and Aluminum Production and Processing, Animal Food Manufacturing, Animal Slaughtering and Processing, Apparel Accessories and Other Apparel Manufacturing, Apparel Knitting Mills, Architectural and Structural Metals ...
A system and method for achieving an optimum interstand strip tension providing substantially equal loading of adjacent stands of a tandem rolling mill where such optimum tension is determined by the expression ##EQU1## where A1 and B1 are, respectively, the load ratio intercept and the slope of the load ratio versus interstand tension function for a first mill rolling stand, and A2 and B2 are ...
Looper—tension control among various control problems in hot rolling mills (HRMs) has significance, in particular, because it affects both operational stability of the process and dimensional quality of the products. The control target in this control loop is to maintain looper angle and strip tension simultaneously at their desired values.
© DZCrusher - كل الحقوق محفوظة
