Click here to visit the Chinese website Achenbach Asia Pacific. Primetals Technologies has developed a looper shape meter LSM for continuous and accurate measurement of interstand shape. After preparing the models and controllers for subordinate control loops, the high-level MIMO controller for the whole tandem hot-strip rolling mill is designed. Since a model-based control approach is adopted, product parameters are identified in a receding horizon manner along the whole production line. This mill is technologically developed from unmatched quality raw materials and most advanced techniques ensuring accurate pressing for reducing the thickness of the copper piece. This allows a systematic consideration of input and state constraints, system delays, nonlinear effects, MIMO configurations, and anticipated knowledge of future operating conditions and disturbances. Other research activities address the dynamical behavior and control of loopers and coilers.
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Rolling Mill To handle the high demand for precision strip, specialty tempers, gauge connections and bright finnish coils, rolling mills are located at both our Bridgeport, CT and Weirton, WV plants. Since that time, we have maintained our position as a pioneer in the field, and Primetals Technologies have made numerous improvements to this system based on our extensive experience in the industry. The mandrel-less coil box also provides space to install side heat shields which contribute to reducing the temperature drop at the coil edge. The coil box, however, was to be installed in the second phase to keep down the initial investment. Primetals Technologies utilizes the Work Roll Shifting at hot strip rolling field for different two purposes:
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Rolling Mills for Copper Conform Strip
The dynamic control functions are not simple feedback control; they use models to consider both the profile and shape, and coordinate control in each of the stands. The satisfaction of the customers is the main concern. The production of hot strip is a key element of steel production. MSD is a hydraulic cylinder installed to mill housing window and press a roll chock against the opposite side with constant force. Based on this hierarchical strategy, modeling and design of subordinate control loops are addressed first. Extending the roll life Eliminating roll surface defects Extending the length of same-width rolling Permitting to widen out without roll change. Since that time, we have maintained our position as a pioneer in the field, and Primetals Technologies have made numerous improvements to this system based on our extensive experience in the industry.
Description:Mathematical models of the looper and coiler motion and the shape of the strip are used for active stiffness control of the coupled systems. The differential-speed rotary crop shear is a unique product of Primetals Technologies. The advantages of the SSP control include the following: An additional MIMO controller utilizes asymmetric adjustment of the roll gaps to control the lateral movement of the strip. Since close to half of all steel produced is hot-rolled to strip, mills require maximum throughput and availability combined with geometrical precision and the ability to create optimum material properties. The distance between finishing mill stands was kept at 4. The combination of Power Cooling with laminar cooling is a perfect solution for cooling lines which offers a wide range of applications as well as for optimizing the current product mix and future metallurgical requirements.