System of automated control of Hydraulic screw-down mechanisms of plate mill stand

2015 ◽  
Author(s):  
Andrey G. Shubin ◽  
Boris M. Loginov ◽  
Vadim R. Khramshin ◽  
Sergey A. Evdokimov ◽  
Alexander S. Karandaev
Keyword(s):  
Plate Mill ◽  
Automated Control ◽  
Mill Stand

Improvement of Work Roll Bending Control System Installed at Plate Mill Stand

2017 ◽  
Author(s):  
Vadim R. Gasyarov ◽  
Andrey A. Radionov ◽  
Boris M. Loginov ◽  
Stanislav S. Voronin ◽  
Vadim R. Khramshin
Keyword(s):  
Control System ◽  
Work Roll ◽  
Plate Mill ◽  
Roll Bending ◽  
Mill Stand

Finite Element Modal Analysis on 5500mm Heavy Plate Mill Rack

2013 ◽  
Vol 753-755 ◽  
pp. 1708-1711
Author(s):  
De Chen Zhang ◽  
Xing Lei Yao ◽  
Yan Ping Sun ◽  
Yuan Li
Keyword(s):  
Finite Element ◽  
Analytical Method ◽  
Computer Aided Design ◽  
Design Method ◽  
Vertical Vibration ◽  
Plate Mill ◽  
3D Design ◽  
Heavy Plate ◽  
Finite Element Software ◽  
Mill Stand

Aiming at the vibration problems in Anshan Iron 5500mm heavy plate mill production line, the mill frame vibration in the main parts is researched by using the computer aided design method and the analytical method. Using SolidWorks 3D design software for frame modeling, the model is imported into the ANSYS finite element software, then 5500mm heavy plate mill stand 12 order natural frequencies and natural vibration type is calculated; applying analytical method of the 12th band of vertical vibration the natural frequency is calculated, and the finite element results is analysed comparatively. This paper lays the foundation for the study of the vibration of the mill stand in the future, provides a theoretical basis for the dynamic design of the mill stand.

Speed Coordination System for Electric Drives of a Plate Mill Stand: Theory and Development

2021 ◽  
Author(s):  
A. S. Karandayev ◽  
B. M. Loginov ◽  
M. A. Zinchenko ◽  
D. M. Mazitov ◽  
A. S. Podolko
Keyword(s):  
Plate Mill ◽  
Electric Drives ◽  
Coordination System ◽  
Mill Stand

Method limiting dynamic loads of electromechanical systems of plate mill stand

2018 ◽  
Author(s):  
Alexander S. Karandaev ◽  
Vadim R. Gasiyarov ◽  
Ekaterina A. Maklakova ◽  
Boris M. Loginov ◽  
Ekaterina A. Khramshina
Keyword(s):  
Dynamic Loads ◽  
Plate Mill ◽  
Electromechanical Systems ◽  
Mill Stand

scholarly journals Automated control system for fire cutting units on a plate mill

2021 ◽  
Vol 1 ◽  
pp. 86-95
Author(s):  
M.G. Ievlev ◽  
◽  
G.G. Grabovsky ◽  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
High Reliability ◽  
Metrological Certification ◽  
Plate Mill ◽  
Metal Consumption ◽  
Automated Control ◽  
Automated Control System ◽  
Plate Rolling ◽  
Reliability Characteristics

One of the most important indicators of a plate rolling mill efficiency is a metal consumption (cost coef-ficients) per ton of product. Reduction of metal consumption coefficients is ensured by the accuracy of the set geometric dimensions realization during the rolling, increasing the accuracy of geometric dimen-sions of the plates that are cut from the rolls on fire cutting units, as well as by operating in the minus field of tolerances on the geometric dimensions of the plates. Improving the accuracy of the geometric dimensions of the plates, cut from the rolls on the fire cutting units, is achieved through the automatic control of these units. The article describes the technical solutions, implemented in the automated con-trol system of fire cutting units (the ACS FCU) of the heat treatment department and fire cutting of a plate mill 3600. The purposes of the ACS FCU creation include an increase in accuracy and stabilization of the geometrical sizes of the work pieces cut out of plates through the automatic control; reduction of metal consumption coefficients due to the operation in the minus field of tolerances on the geometric dimensions of the work pieces; replacement of obsolete equipment with the modern one in order to in-crease the reliability of the mill equipment operation; increasing the ACS FCU service life through the use of modern equipment with high reliability characteristics; reduction of unplanned equipment down-time that may arise as a result of the ACS FCU technical means failures. The automated control system of fire cutting units has been set up, tested and put into operation; a metrological certification of the system has been carried out as well. The results of the ACS FCU testing and its subsequent operation have confirmed the system efficiency and the performance of all its intended functions. This system can be also implemented in the processes of treatment of other rolling mills, equipped with the units for the fire cutting of metal.

scholarly journals Development of Digital Control Algorithms for the Mechatronics System Drives of Reversing Plate Mill Stands

2021 ◽  
Vol 21 (1) ◽  
pp. 122-140
Keyword(s):  
Control System ◽  
Position Control ◽  
Control Channel ◽  
Control Algorithms ◽  
Plate Mill ◽  
Thickness Control ◽  
Automatic Gauge Control ◽  
Gap Control ◽  
Mill Stand ◽  
Roll Gap

Expanding the plate mill product range implies the improvement of control algorithms for the mechatronics control system drives of the reversing stands. The most important objectives include increasing the accuracy of geometric dimensioning and tolerancing, as well as improving the profile and surface flatness of rolled pro­ducts. The structure explaining the automatic ROLL-GAP CONTROL concept is provided, which allows controlling the thickness and gap between SMS-Demag AG rolls. This concept is implemented in the '5000' mill stand of Magnitogorsk Iron and Steel Works. The structural diagram of the automatic gauge control system (AGS) is presented. The functional diagram of the hydraulic gap control (HGC) system is presented, which includes a fast proportional control channel and a relatively slow integral position control channel. The principle of automatic thickness control is discussed, implemented in the automatic gauge control (AGC) system of the mill stand TCS controller. The diagram and dependences are prepared for the calculation of the nonlinear thickness controller parameters. The functions of the RAC regulator are described, intended for compensation of the tensile difference (gap spacing) at the mill stand sides. The dynamic impact compensation system functions are considered. The removal of the roll bending and deformation control signals is substantiated. The disadvantages of AGC are noted for sheets with a thickness below 10 mm. The most dangerous case is the tearing of metal fragments from the rear sheet side caused by the incorrect operation of the gauge control system. A method for hydraulic gap control is proposed based on the fast increase of the roll gap in the rear part of the rolled sheet during the last passage when rolling thin sheets. The results of experimental studies made on the '5000' mill are presented. The efficiency of the proposed control method has been confirmed. The oscillograms of signals are presented characterizing thickness variations. HGC and AGC systems with the proposed adjustments are proven to provide high-accuracy hydraulic position control and thickness control along the sheet length and width.

scholarly journals Automatic control of the rolling mode “at an angle” on a reversing hot rolling mill

2020 ◽  
Vol 2 ◽  
pp. 99-104
Author(s):  
M.G. Ievlev ◽  
Keyword(s):  
Automatic Control ◽  
Longitudinal Axis ◽  
Rolling Process ◽  
Thick Sheet ◽  
Plate Mill ◽  
Automated Control ◽  
Quality Of Control ◽  
Sheet Width ◽  
Minimum Number ◽  
Rolling Mode

One of the most important indicators of the quality of control of the rolling process on a plate mill is the accuracy of obtaining the geometric dimensions of rolled metal, which determines the cost of metal per ton of product, in particular, the accuracy of the implementation of a given width. The sheet width exceeding the width of the initial billet, under rolling on plate mills, is obtained at the stage of breaking the width in a horizontal stand. Breakdown of the width in most cases is carried out by rolling the workpiece at an angle of to the longitudinal axis of the future sheet. However, if the rotation of the roll (slab) is not possible at the stated angle (for example, when the width of the roll is less than the distance between the rollers), then a part of the considered stage is carried out by rolling “at an angle” less than . In the process of such rolling, the dimensions of the roll along all axes and its shape in plan are changed (initially the rectangular shape takes the form of a parallelogram). The paper describes the mathematical description for one of the options for forming the width of a thick sheet when rolling “at an angle” in relation to an automated control system for the technological process of a plate mill. On the basis of the concepts describing the formation of the roll in the plan during rolling “at an angle”, the expressions were obtained that relate the parameters of the roll and the rolling mode. The problem of automatic control of the rolling mode “at an angle” is formulated. The proposed calculation of the rolling mode, which is implemented at a pace with the rolling process, provides a rectangular roll of a predetermined width for a minimum number of passes, subject to restrictions on the reduction in passes. The described approach to the automatic control of the rolling mode during rolling at the “angle” is implemented in the mathematical support of the system for calculating the rolling parameters and heat hardening of the plate mill 5000.

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