The Laser Thickness Measurement System Applied in Steel Rolling

2013 ◽  
Vol 718-720 ◽  
pp. 725-732
Author(s):  
Kuang I Chang ◽  
Weber Yi Yuan Lin ◽  
Bor Nian Chuang ◽  
Kuang Fu Huang
Keyword(s):  
Steel Plate ◽  
System Development ◽  
Plate Thickness ◽  
Measurement Data ◽  
Integrated Design ◽  
Rolling Process ◽  
Thickness Measurement ◽  
Thickness Gauge ◽  
Steel Rolling ◽  
Plate Rolling

This paper mainly describes application of non-contact laser thickness gauge in steel plate rolling process, including workstation site thickness measurement, data collection, information analysis and integration with ERP system, as well as problems may arise during applications and sustainable development in the future. Through the system development to realize traditional steel plate rolling industry information planning, paperless operations, increase work efficiency, enhance product quality and zero defective products. Integrated design of steel plate thickness measurement and tachometer, to understand the pros and cons of output products right after steel plate rolling, and do product level classification immediately to assist enterprises to save manpower, time and loss cost of export defective products to the market, and eventually increase products competition and profits.

scholarly journals Development of Intermediate Cooling Technology and Its Control for Two-Stand Plate Rolling

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Fei Zhang ◽  
Wei Yu ◽  
Tao Liu
Keyword(s):  
Steel Plate ◽  
Cooling System ◽  
Chromatic Aberration ◽  
Rolling Process ◽  
Controlled Rolling ◽  
Plate Surface ◽  
Plate Rolling ◽  
Intermediate Cooling ◽  
Rolling Efficiency ◽  
The Impact

In a plate rolling production line, thermomechanically controlled processing is critical for plate quality. In this paper, a set of intermediate cooling equipment of a two-stand plate mill with super density nozzles, medium pressure, and small flow is developed. Based on a simplified dynamic model, a cooling control scheme with combined feedforward, feedback, and adaptive algorithms is put forward. The new controlled rolling process and the highly efficient control system improve the controlled rolling efficiency by an average of 17.66%. The proposed intermediate cooling system can also effectively inhibit the growth of austenite grain, improve the impact toughness and yield strength of Q345B steel plate, reduce the formation of secondary oxide scale on the plate surface and the chromatic aberration of the plate surface, and greatly improve the surface quality of the steel plate.

The steel plate curvature analytic modeling for the snake rolling with the same roll diameters

2021 ◽  
Vol 118 (2) ◽  
pp. 205
Author(s):  
Lian-Yun Jiang ◽  
Jin-Bo Huang ◽  
Tao Zhen ◽  
Yao-Yu Wei ◽  
Zhen-Lei Li
Keyword(s):  
Shear Strain ◽  
High Performance ◽  
Steel Plate ◽  
Axial Strain ◽  
Plate Thickness ◽  
Theoretical Method ◽  
Simulation Method ◽  
Rolling Process ◽  
Speed Ratio ◽  
Plate Curvature

The snake rolling can keep the plate shape well, and the larger shear strain produced by the snake rolling is conducive to the deformation penetrating into the center of the heavy plate. So it provides a new method for producing the high-performance heavy steel plate. However, there is little research on the plate curvature modeling which is the key to achieve the snake rolling process. The deformation region was divided into four different zones at most which was depended on the positions of the two neutral points, and this number could be dropped to three or two in some other conditions. It was divided into three different cases according to the neutral point position: I, II, III and IV; I, II and IV; II and IV. The unit pressure and the accumulated shear strain deviation between the top and bottom portions of the plate with every case were established, and the plate curvature caused by shear strain was calculated on this basis. The plate curvature caused by the axial strain was also calculated according to the flow criterion. The approximations are corrected by a fitting coefficient E. The homogeneity coefficient E was introduced during the plate curvature modeling process to make the model more accurate. Then the total plate curvature model was established. The simulation of snake rolling process is carried out by using ANSYS LS-DYNA, and the plate curvature results are compared with the theoretical method. The results showed that the maximum and minimum relative error of the model was 11.61% and 0.28% compared to the simulation method, which can be applied for the online plate curvature control application with the effect of some self-learning methods. The plate curvature affecting law with the different process parameters (roll offset, roll speed ratio, rolling reduction, plate thickness and so on) was obtained in this paper. The research about the plate curvature modeling will provide important references for the heavy steel plate snake rolling production.

Research of Ultrasonic Thickness Measurement Method Based on the Pulse Reflection Type

2013 ◽  
Vol 380-384 ◽  
pp. 798-801 ◽  
Author(s):  
Min An ◽  
Jie Sun ◽  
Yin Yang Zhang
Keyword(s):  
Measurement Method ◽  
Steel Plate ◽  
Plate Thickness ◽  
Thickness Measurement ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Ultrasonic Thickness Measurement ◽  
Safety Production ◽  
Measurement Principle ◽  
Ultrasonic Thickness

The thickness measurement and monitoring of all kinds of equipment and parts, especially making general investigations on the thickness of boiler, pressure vessel and pipelines regularly, monitoring their thinning after corrosion in the process of using, and ensuring the safety production have attracted more and more attention among the companies. Based on the thickness measurement principle of pulse reflection type ultrasonic, the measurement method of the steel plate thickness was studied, and AVR Atmega16 single chip microcomputer as control chip was used. The analysis and comparison of ultrasonic transmitting circuit, receiving circuit, amplifying circuit, LCD display circuit, keyboard circuit, communication circuit, counter 232 AVR Atmega16 line were also included. The performance of this system regarding the steel plate as sample was tested, and then the data and the causes of measurement error were presented.

Microstructural Modelling Applied to the Design and Control of the Steel Plate Rolling Process

2012 ◽  
Vol 715-716 ◽  
pp. 529-541
Author(s):  
R. Doell ◽  
Joseph Lee ◽  
A. Harvey ◽  
M. Steeper
Keyword(s):  
Mechanical Properties ◽  
Grain Growth ◽  
Steel Plate ◽  
Rolling Process ◽  
Metallurgical Process ◽  
Plate Rolling ◽  
On Line ◽  
Microstructural Modelling ◽  
And Control

Modern steel plate manufacture relies on the manipulation of recrystallisation and grain growth in order to obtain maximised and precise mechanical properties from low-alloyed feedstock. The models that describe this metallurgical process nowadays inform the design of the plant itself. They are also capable of application to the on-line control of rolling, as well as to several of the ancillary mill operations.

scholarly journals A Signal Processing Method for Steel Plate Thickness Measurement Using EMATs

2020 ◽  
Author(s):  
Chao Jiang ◽  
Wencai Liu ◽  
Youwei Liu ◽  
Xinjun Wu
Keyword(s):  
Signal Processing ◽  
Steel Plate ◽  
Plate Thickness ◽  
Thickness Measurement ◽  
Processing Method ◽  
Echo Signal ◽  
Electromagnetic Acoustic Transducer ◽  
Signal Processing Method ◽  
Spectral Frequency ◽  
The Time Domain

The time-of-flight (TOF) of the electromagnetic acoustic transducer (EMAT) echo signal can be used to measure the steel plate thickness. There are two ways to obtain the TOF, which are measure the peak to peak time in the time domain and calculate the echo frequency in the frequency domain. In this paper, a simplified signal model is proposed based on the analysis of received signals. Further, the relationship between the echo signal and excitation signal is considered. The echo signal is separated when the asynchronous demodulation method is applied to the received signal, and the thickness of steel plate can be calculated according to the peak spectral frequency in the low frequency band. The simplified model and signal processing method are verified by the experiment, and the results show that the model is reasonable and the accuracy of the signal processing method is high.

scholarly journals The research and development of longitudinal profiled (LP) plate

2018 ◽  
Vol 175 ◽  
pp. 01025
Author(s):  
Lu Shiping ◽  
Li qun ◽  
Wang Zhiyong ◽  
Gu Linhao ◽  
Zhang Xuanming
Keyword(s):  
Research And Development ◽  
Thick Plate ◽  
Steel Plate ◽  
Rolling Process ◽  
Bite Angle ◽  
Plate Rolling ◽  
Ordinary Steel ◽  
Test Result

In this paper, the advantages of the longitudinal profiled(LP) steel plate is described, and the characteristics of LP plate rolling process is introduced. In contrast to the ordinary steel plate, The change rule of the bite angle and other parameters is put forward from the rolling principle. On this basis, the rolling plan is formulated. The finished condition of the steel plate is TMCP, and the size of the steel plate is corresponding to the setting value. Test result shows that the performance meets the standard of Q345. This indicates that LP plate has successfully developed in the Shougang thick plate plant.

scholarly journals Measuring Thickness of Object with Ultrasonic Thickness Gauge

2018 ◽  
Vol 175 ◽  
pp. 03029
Author(s):  
Fuao Han ◽  
Li Zhang ◽  
Kaige Cui
Keyword(s):  
Coupling Agent ◽  
Steel Plate ◽  
Surface Condition ◽  
Thickness Measurement ◽  
Steel Pipe ◽  
Plate Glass ◽  
Thickness Gauge ◽  
Ultrasonic Thickness

In this paper, the ultrasonic thickness gauge by the pulse-reflective principle of the steel pipe, the thickness of steel plate, glass and glass were measured and analyzed, and other factors in thickness measurement had certain influence on the thickness measured: coupling agent, surface condition, temperature and so on.

Research on Deformation Permeability Changing Law during Snake Rolling Process

2014 ◽  
Vol 788 ◽  
pp. 367-371
Author(s):  
Xiao Jin Liu ◽  
Lian Yun Jiang ◽  
Guo Yuan ◽  
Guo Dong Wang
Keyword(s):  
Steel Plate ◽  
Effective Strain ◽  
Plate Thickness ◽  
Rolling Process ◽  
Speed Ratio ◽  
Roller Speed ◽  
Calculation Results ◽  
Rolling Method ◽  
Thick Steel ◽  
Numerical Calculation Method

In order to refine the microstructure and improve the mechanical properties of the thicker steel plate, the large rolling reduction should be conducted. Confined to the biting angle of rolling mill, the maximum press quantity is constant. The research indicates that shear stress produced in the deformation region during snake rolling process is helpful and the snake rolling method can be used in the thick steel plate production. The effective strain of steel plate with various roller speed ratio, plate thickness, fraction and roller speed was determined by numerical calculation method. By comparison, the effective strain changing law was obtained. The calculation results indicate that compared to traditional rolling process, the effective strain produced in the plate can be improved with the increase of roller speed ratio, and the deformation permeability can also be improved.

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