The article presents the results of studies synchronous machines longitudinally transverse excitation operating in drives rolling mills with a sharply alternating shock load, provides an algorithm for compiling mathematical model using system differential equations Gorev Park, taking into account parameters windings, comparative analysis calculation experiments on physical model.

It is important to study the vibration of rolling mills improve stability production. A dynamic process model established by considering elastic recovery exit strip and influence multiroll equilibrium, accuracy verified experimental data. On this basis, based on distribution friction force in deformation zone, torque are nonlinearized. In addition, a mill structure gap piecewise nonlinear horiz...

The need of cooling arrangement for DC motor is very important to reduce the frame size of the motor. It required to select the effective cooling arrangement of the DC motor based on the application, surrounding of the motor installation and power consumption. DC motors are the workhouse variable speed drives in the continuous steel rolling mills for many years. DC motors in the steel rolling m...

Within the Fives Group, Fives Stein, Fives DMS and Fives Bronx design and supply a wide range of production, transformation and treatment lines for carbon, stainless and silicon steel. From pickling and annealing lines to the continuous galvanizing line, from rolling mills to tube and pipe mills, our teams will offer you their expertise and the best available technologies to achieve the highest...

The early fault characteristics of rolling element bearings carried by vibration signals are quite weak because the signals are generally masked by heavy background noise. To extract the weak fault characteristics of bearings from the signals, an improved spectral kurtosis (SK) method is proposed based on maximum correlated kurtosis deconvolution (MCKD). The proposed method combines the ability...

Deviation of a slab width from the desired value in hot plate mills has caused signijicant yield loss by trimming and demanded tighter width tolerances of rolled plates. This necessitates vertical rolling with considerable width accuracy. In this papec a slab width control system is proposed in order to meet the stringent requirement on the plate dimensional tolerance. The control system adopts...

This paper deals with the thickness and flatness control problem in heavy plate mills. After a short description of the industrial plant the first part of the paper is concerned with a new control strategy for the improvement of the thickness homogeneity over the plate length. This model–based concept takes into account valuable information from previous passes which, together with accurate mat...

Steel containing 0.03% carbon, 1.35% copper and 0.84% nickel had yield strength in the 540-625 MPa (78-90 Ksi) range depending on thickness, ultimate tensile strength in the 625-690 MPa (90100 Ksi) range, and 25-30% elongation when air cooled after hot rolling. No brittle heat-affected zone was formed during manual or automatic submerged arc welding without pre-heating or postheating. The fract...