目錄
Chapter 1 Production Equipment and Process of Hot Rolling
1.1 Introduction to the production process of hot rolled strip
1.1.1 Development of hot rolling production abroad
1.1.2 Development of hot rolling production in China
1.1.3 Layout of strip hot - rolling workshop and rolling mill
1.2 Main equipment for hot - rolled strip production
1.2.1 Main features of equipment used in the newly built conventional hot rolling mill for wide strip
1.2.2 Heating furnace equipment
1.2.3 Rough rolling area equipment
1.2.4 Finishing rolling area equipment
1.2.5 Laminar cooling device and coiling equipment
1.3 Common detection instrument for hot rolling production line
1.3.1 Infrared pyrometer
1.3.2 Width gauge
1.3.3 Rolling force load cell
1.3.4 Multifunctional instrument
1.3.5 Strip flatness measurement instrument
1.3.6 Online surface detection device for strip
References
Chapter 2 Composition of Electrical Automation System for Hot Rolling Mill
2.1 Structure and function of hot strip rolling control system
2.1.1 The structure of control system
2.1.2 Control system features
2.1.3 Functions of the control system
2.1.4 Automation control system configuration
2.2 Automation control system hardware
2.2.1 Hardware and software of process control level system
2.2.2 Hardware and software of basic automation level
2.3 Automation system communication
2.3.1 Main features of basic automation level communication
2.3.2 Communication based on serial interface
2.3.3 Ethernet - based communication
2.3.4 Fieldbus - based communication
2.3.5 Ultra - high - speed communication network
2.4 Human machine interface (HMI)
2.4.1 Basic functions of HMI
2.4.2 Composition and form of HMI
2.4.3 Configuration software for HMI
References
Chapter 3 Theoretical Basis of Hot Strip Rolling Model
3.1 Rolling deformation zone theory
3.1.1 Deformation zone geometric parameters
3.1.2 Bite conditions
3.1.3 Deformation degree and deformation speed
3.1.4 Neutral angle, forward slip and backward slip
3.1.5 Width spread of rolled product
3.1.6 Stress state in deformation zone
3.2 Basics of heat transfer
3.2.1 Radiation heat transfer
3.2.2 Heat conduction
3.2.3 Convection heat transfer
3.3 Modeling and computational methods
3.3.1 Overview
3.3.2 Regression analysis
3.3.3 Interpolation algorithm
3.3.4 Finite difference method
3.3.5 Neural networks
3.4 Data mining technology
3.4.1 Cluster analysis
3.4.2 Decision tree
3.4.3 Association rules
3.5 Model self - learning method
3.5.1 Growing memory recursive least squares method
3.5.2 Exponential smoothing
3.5.3 Model short - term and long - term self - learning
References
Chapter 4 Rolling Model and Schedule Calculation
4.1 Rolling force model
4.1.1 Horizontal projection length of contact arc
4.1.2 External friction stress state coefficient
4.1.3 Tension influence coefficient
4.1.4 Deformation resistance calculation
4.2 Rolling torque and power model
4.2.1 Calculation of rolling torque
4.2.2 Calculation of motor power
4.3 Rolling schedule calculation
4.3.1 Rolling strategy
4.3.2 Load distribution
4.3.3 Pre - calculation of schedules
4.3.4 Roughing pass correction
4.3.5 Finishing rolling entry correction
4.3.6 Post - calculation and self - learning
References
Chapter 5 Temperature Model and Control
5.1 Overview
5.2 Temperature model
5.2.1 Temperature drop during roller table transport
5.2.2 High pressure water descaling
5.2.3 Low pressure water spray cooling
5.2.4 Temperature changes during rolling deformation
5.3 Heating temperature control
5.3.1 Slab temperature prediction
5.3.2 Furnace temperature optimization
5.3.3 Furnace temperature setting
5.4 Rough rolling temperature control
5.5 Finishing rolling temperature control
5.5.1 Finishing rolling speed setting
5.5.2 Final rolling temperature setting of strip head
5.5.3 Finishing rolling temperature control along strip length
5.6 Coil temperature control
5.6.1 Coil temperature prediction model
5.6.2 Coiling temperature control strategy
5.6.3 Coiling temperature control system
References
Chapter 6 Main Speed and Tension Control
6.1 Overview
6.2 Tension control principle
6.2.1 Inter - stand tension of strip
6.2.2 Tension generation mechanism
6.3 The components of tension control system
6.3.1 Main equipment components of tension control system
6.3.2 Basic formula of tension control system
6.3.3 Tension control conventional PI controller
6.3.4 High frequency oscillation detection and suppression controller
6.3.5 Nonlinear approaching controller for tension control
6.3.6 Position, speed, torque three - loop controller
6.3.7 ILQ (inverse linear quadratic) controller
6.4 Tension control technology optimization
6.4.1 Control algorithm optimization
6.4.2 Control structure optimization
6.4.3 Process parameter optimization
6.4.4 Hardware design optimization
References
Chapter 7 Thickness and Width Control
7.1 Automatic position control
7.1.1 Composition and structure of APC
7.1.2 Electric APC
7.1.3 Hydraulic APC
7.2 Roll gap zeroing calibration
7.2.1 Rolling mill screw down zeroing calibration
7.2.2 Edger roll zeroing position calibration
7.3 Causes of thickness and width fluctuations
7.3.1 Causes of thickness fluctuations
7.3.2 Causes of width fluctuation
7.4 Automatic gauge control
7.4.1 Analytical methods for thickness control
7.4.2 Thickness setting calculation
7.4.3 Locking method for thickness control
7.4.4 Feedforward AGC
7.4.5 Feedback AGC
7.4.6 Monitoring AGC
7.4.7 Tension AGC
7.4.8 AGC compensation function
7.4.9 Speed compensation during AGC adjustment
7.5 Automatic width control
7.5.1 Mathematical
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