A study on the fault diagnosis of the 3-d roll shape in cold rolling

2004 ◽  
Vol 18 (12) ◽  
pp. 2174-2181 ◽  
Author(s):  
Chang Woo Lee ◽  
Hyun Kyoo Kang ◽  
Kee Hyun Shin
Keyword(s):  
Fault Diagnosis ◽  
Cold Rolling ◽  
Roll Shape

scholarly journals A study of nonlinear coupling dynamic characteristics of the cold rolling mill system under different rolling parameters

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401771370 ◽  
Author(s):  
Hai Xu ◽  
Ling-Li Cui ◽  
De-Guang Shang
Keyword(s):  
Fault Diagnosis ◽  
Cold Rolling ◽  
Dynamic Characteristics ◽  
Rolling Mill ◽  
Vibration Amplitude ◽  
Strip Thickness ◽  
Drive System ◽  
Nonlinear Coupling ◽  
Cold Rolling Mill ◽  
Coupling Dynamic

The dynamic characteristics of the mill and the drive system are mutually coupled and affected closed-loop system. However, most research has considered only the vibration of the drive system or the vibration of the mill to determine the cause of the accident in the equipment condition monitoring and fault diagnosis process. Condition monitoring and fault diagnosis based on this type of approach can lead to misdiagnosis or missed diagnosis in determining faults in actual systems. So, in this study, a dynamic model of the coupling between a mill and its drive system was developed to study the interaction of the mill and the drive system with the goal of increasing the accuracy of diagnostic methods and to improve the quality of the rolled material. A nonlinear coupling dynamic model was formulated to represent the relation between the gearbox vibration amplitude and various time-varying parameters to study the effects of various parameters on the drive system vibration characteristic under unsteady lubrication. Simulations results showed that increasing the strip speed, the input strip thickness, or the output strip thickness or decreasing the lubricating oil temperature or the roller radius caused the vibration amplitude of the drive system to increase. The vibration frequency caused by variations in the strip inlet or outlet thickness can be transmitted to the drive system, and gear meshing frequency of the gearbox can be transmitted to the mill. Test data from an actual cold rolling mill verified the accuracy of the model. The model was shown to be capable of simulating the mutually coupled and affected mechanism between a mill and its drive system.

scholarly journals FAULT DIAGNOSIS OF ROLL SHAPE UNDER THE SPEED CHANGE IN HOT ROLLING MILL

2005 ◽  
Vol 38 (1) ◽  
pp. 45-50
Author(s):  
Chang Woo Lee ◽  
Hyun Kyoo Kang ◽  
Cheol Jae Park ◽  
Kee Hyun Shin
Keyword(s):  
Fault Diagnosis ◽  
Hot Rolling ◽  
Rolling Mill ◽  
Speed Change ◽  
Hot Rolling Mill ◽  
Roll Shape

Data-Based Hybrid Tension Estimation and Fault Diagnosis of Cold Rolling Continuous Annealing Processes

2011 ◽  
Vol 22 (12) ◽  
pp. 2284-2295 ◽  
Author(s):  
Qiang Liu ◽  
Tianyou Chai ◽  
Hong Wang ◽  
Si-Zhao Joe Qin
Keyword(s):  
Fault Diagnosis ◽  
Cold Rolling ◽  
Continuous Annealing

Fault Diagnosis for Rack Vibration of Brush Roll in Washing Section of Galvanization Unit in Cold Rolling Plant by Means of HP35670A Dynamic Signal Analyzer

2012 ◽  
Vol 588-589 ◽  
pp. 1014-1018
Author(s):  
Ke Gang Zhu ◽  
Zhao Gang Zhang ◽  
Bao Quan Liu ◽  
Shu Juan Meng ◽  
Ren Sheng Wang
Keyword(s):  
Fault Diagnosis ◽  
Cold Rolling ◽  
Real Time ◽  
Online Detection ◽  
Time Analysis ◽  
The Real ◽  
Real Time Analysis ◽  
Equipment Failures ◽  
Rolling Plant ◽  
Dynamic Signal

The paper determines the real-time location of and the real-time reasons for equipment failures on the premise of the integration of equipment, through the online detection and the real-time analysis of the vibration abnormities and faults in the driving side as well as the service side of rack of brush roll in the washing groove that lies in washing section 2# of the galvanization unit in a plant, by employing the HP35670A dynamic signal analyzer.

A Study on the Fault Diagnosis of 3-D Roll Shape in Rolling Systems

2004 ◽  
Vol 37 (15) ◽  
pp. 257-262 ◽  
Author(s):  
Kee Hyun Shin ◽  
Chang Woo Lee ◽  
Hyun Kyoo Kang
Keyword(s):  
Fault Diagnosis ◽  
Roll Shape

Fault diagnosis of roll shape under the speed variation in hot rolling mill

2006 ◽  
Vol 20 (9) ◽  
pp. 1410-1417 ◽  
Author(s):  
Chang Woo Lee ◽  
Hyun Kyoo Kang ◽  
Kee Hyun Shin
Keyword(s):  
Fault Diagnosis ◽  
Hot Rolling ◽  
Rolling Mill ◽  
Speed Variation ◽  
Hot Rolling Mill ◽  
Roll Shape

Flatness Detection and Roll Shape Adjustment of Cold Rolled Material

2014 ◽  
Vol 543-547 ◽  
pp. 3955-3958
Author(s):  
Rong Hua Zhang ◽  
Biao Wu
Keyword(s):  
Residual Stress ◽  
Cold Rolling ◽  
Degree Program ◽  
Raw Material ◽  
Control Allocation ◽  
Rolled Material ◽  
Allocation Method ◽  
Cold Rolled ◽  
Shape Adjustment ◽  
Roll Shape

Cold rolling rules according to the fixed incoming crown distribution of each crown control, raw material convexity fluctuations will destroy convex degree program, light is left with the residual stress, heavy waves. This paper discusses test incoming convexity, convexity control allocation method of residual stress.

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