High-Accuracy Plate Thickness Control

1981 ◽  
Vol 14 (2) ◽  
pp. 2507-2514
Author(s):  
M. Saito ◽  
S. Tanimoto ◽  
H. Tsukamoto ◽  
Y. Naba
Keyword(s):  
Plate Thickness ◽  
High Accuracy ◽  
Thickness Control

scholarly journals Development of Plate Thickness Control with High Accuracy in Plate Mill

1993 ◽  
Vol 79 (3) ◽  
pp. 318-325 ◽  
Author(s):  
Kenichi OHE ◽  
Yoshio MORIMOTO ◽  
Shigemi KAJIURA ◽  
Kazuhiko HIGASHI ◽  
Keima ANRAKU ◽  
...  
Keyword(s):  
Plate Thickness ◽  
High Accuracy ◽  
Plate Mill ◽  
Thickness Control

scholarly journals Overriding plate thickness control on subducting plate curvature

2015 ◽  
Vol 42 (10) ◽  
pp. 3802-3810 ◽  
Author(s):  
Adam F. Holt ◽  
Bruce A. Buffett ◽  
Thorsten W. Becker
Keyword(s):  
Plate Thickness ◽  
Thickness Control ◽  
Plate Curvature ◽  
Subducting Plate

A Universal Finite Element of Thick and Thin Plate without Shear Locking

2011 ◽  
Vol 52-54 ◽  
pp. 1353-1357
Author(s):  
Shu Qiang Yu ◽  
Ming Zhang ◽  
Lu Lu Fan
Keyword(s):  
Finite Element ◽  
Thin Plate ◽  
Plate Thickness ◽  
High Accuracy ◽  
Thin Plates ◽  
Deep Beam ◽  
Computational Results ◽  
Shear Locking ◽  
Plate Element ◽  
Universal Element

In order to prevent shear locking, a method using theory of deep beam is proposed. A universal finite element for thick and thin plates is constructed. When the plate thickness approaches to the limit of thin plate, the universal element degenerates to the thin plate element automatically. As a results, the shear locking phenomenon will not appear. The computational results indicate that the current element has high-accuracy and good usefulness.

scholarly journals Improving the Control Accuracy of the Strip Plate During Shaped Rolling Using Electric and Hydraulic Drives

2019 ◽  
pp. 43-53
Author(s):  
Vadim R. Gasiyarov ◽  
Boris M. Loginov ◽  
Stanislav S. Voronin
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Plate Thickness ◽  
Response Speed ◽  
Automatic Process Control System ◽  
Plate Mill ◽  
Thickness Control ◽  
Technological Advantage ◽  
Strip Plate

It is important to reduce the amount of metal waste caused by scrap edge and scrap ends in the process of rolling at plate rolling mills. The influence of the correlation of the elongation ratio during drawing and spreading on the geometric shape of the strip plate was estimated. The paper shows the advantages of rolling process forming a double-cone profile at the head and tail sections. The ASC technology was introduced, which makes use of the multipoint strategy of thickness setting along the strip plate length. The importance of improving the accuracy of automatic control of position of screw-down structures and thickness was established when this strategy is used. The paper shows the structure and characteristics of the thickness automatic control system of the plate mill 5000. The analysis of oscillograph records of the strip plate thickness was carried out during the shaping pass for the current settings of the thickness automatic control system. Some deviations were recorded, which were caused by the lag of the regulating signal with respect to the actual deviation of thickness during displacement of the screw-down structures. To improve the response speed of the thickness automatic control system and to reduce the dynamic lag, a method of thickness control with pre-control was offered. The research group considered the double-circuit thickness automatic control system with the feed forward control of the target signal and established the transfer function of the pre-control channel. The paper demonstrated the structure of the simulation model of interrelated electric systems of a reverse rolling stand providing the opportunity of the joint research of shaped rolling and forming of a bend at the head end of the strip plate. The circuits of individual blocks of the model were considered. Comparative analysis of time curves of the strip plate thickness was carried out for the implementation of the design and the developed control algorithms and the increase in the response speed of the thickness automatic control system was proved. The paper demonstrates the oscillograph records obtained during the implementation of the developed algorithm in the automatic process control system of the reverse stand of the plate mill 5000. As a result of their comparison with the oscillograph records of the designed settings of the thickness automatic control system, it was proved that the accuracy of the thickness control improved. The paper notes that the main technological advantage of implementation of the developed algorithm is improving of the final product quality.

A New 1,000 kV Electron Microscope

1967 ◽  
Vol 25 ◽  
pp. 260-261
Author(s):  
M. Nishigaki ◽  
S. Katagiri ◽  
H. Kimura ◽  
B. Tadano
Keyword(s):  
Electron Microscope ◽  
High Voltage ◽  
Basic Research ◽  
Chromatic Aberration ◽  
High Accuracy ◽  
Biological Specimen ◽  
Voltage Electron ◽  
High Voltage Electron Microscope ◽  
High Voltage Electron

The high voltage electron microscope has many advantageous features in comparison with the ordinary electron microscope. They are a higher penetrating efficiency of the electron, low chromatic aberration, high accuracy of the selected area diffraction and so on. Thus, the high voltage electron microscope becomes an indispensable instrument for the metallurgical, polymer and biological specimen studies. The application of the instrument involves today not only basic research but routine survey in the various fields. Particularly for the latter purpose, the performance, maintenance and reliability of the microscope should be same as those of commercial ones. The authors completed a 500 kV electron microscope in 1964 and a 1,000 kV one in 1966 taking these points into consideration. The construction of our 1,000 kV electron microscope is described below.

Application Of BIM-Technology In The Restoration Of Buildings

2020 ◽  
pp. 42-48
Keyword(s):  
Chinese Communist Party ◽  
Laser Scanning ◽  
High Accuracy ◽  
Information Environment ◽  
Information Modeling ◽  
Structural Scheme ◽  
Traditional Design ◽  
Information Interaction ◽  
Heritage Buildings ◽  
Effective Organization

The paper describes the main trends in the development of BIM technologies in the field of restoration and reconstruction of historical and cultural heritage buildings. The practical part of the paper presents the experience in using information modeling technologies when restoring the building, where the VI Congress of the Chinese Communist Party in Moscow took place. The use of laser scanning technologies made it possible to reproduce with high accuracy in the information model the original appearance of the building using Autodesk RevitR software. It is shown, how the use of information modeling technologies affects the duration of restoration process, taking into account the calculation of the structural scheme and bearing structures of the building, ensuring the identity of the decoration and the effective organization of electromechanical installation. Operating in a single BIM information environment makes it possible to continuously obtain reliable information on the project, which provides more effective information interaction and communication of participants compared to using traditional design methods.

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