1 Introduction
1.1 Lead-In
1.2 Concept and Principle of TMCP
1.3 Traditional Laminar Cooling Technology
1.3.1 Overview of the Development of Laminar Cooling Technology at Home and Abroad
1.3.2 Heat Transfer Process Analysis of Laminar Cooling Technology
1.4 Characteristics and Limitations of Traditional TMCP
1.5 New Development of TMCP Technology
1.5.1 Development of High-Efficiency Temperature-Controlled Rolling Technology
1.5.2 Development of After-Rolling Controlled Cooling Abroad
1.5.3 Development of TMCP Technology in China
1.6 Overview of NG-TMCP Technology in China
1.7 Main Contents and Features of This Book
References
2 Core Mechanism of New-Generation TMCP and UFC Technology
2.1 Research Progress and Understanding of NG-TMCP for Hot Rolled Strip
2.2 High-Intensity Uniform Cooling Mechanism of Hot Rolled Strip
2.2.1 Analysis of Jet Impingement Turbulent Flow Under UFC Condition
2.2.2 Analysis of Jet Impingement Heat Transfer Intensity of Hot Rolled Strip
2.2.3 Heat Transfer Intensity on Strip Surface Under Dual-Nozzle Jet Impingement
2.2.4 Study on Cooling Uniformity of Strip Upper and Lower Heat Transfer Surfaces
2.3 Principle of Microstructure Control Based on NG-TMCP Technology
2.3.1 Fine Grain Strengthening Mechanism
2.3.2 Precipitation Strengthening Mechanism
2.3.3 Phase Transformation Strengthening Mechanism
2.4 Microstructure Control and Comprehensive Strengthening Mechanism Based on the NG-TMCP
References
3 Complete Set of Equipment and Key Process Technologies of NG-TMCP
3.1 Research and Development Process of UFC Technology
3.2 Breakthrough in Core Technology of UFC
3.3 Structure Design of UFC Water Spray System
3.3.1 Jet Diffusivity and Finite Element Modeling
3.3.2 Study on Characteristics of Non-Submerged Free Jet of UFC Nozzle
3.3.3 Influence of Nozzle Structure Size on Jet Diffusivity
3.3.4 Impingement Flow Characteristics of Non-submerged Turbulent Jet
3.3.5 Study on Jet Uniformity of the UFC Nozzle Outlet
3.4 Analysis on the Realization Method of Optimal Cooling Strip Shape
3.4.1 Strip Shape Variation Law During Cooling
3.4.2 Optimal Shape Realization Method and Finite Volume Method Modeling
3.4.3 Research on Optimal Shape Realization Method in UFC
3.4.4 Establishment of Optimal Setting Model
3.5 Complete Set of Technical Equipment for UFC of Hot Rolled Strip
3.6 Application and Index Comparison of UFC Technology
3.6.1 Comparison of Industrial Equipment
3.6.2 Cooling Rate
References
4 Development of Process Model System and Key Technologies
4.1 Composition of Cooling Control System
4.1.1 Control System of Temperature-Controlled Cooling in Rolling
4.1.2 After-Rolling Cooling Automation Control System
4.2 Mathematical Model of Temperature
4.2.1 Heat Transfer Process
4.2.2 Establishment of Finite Difference Equation
4.3 Heat Transfer Coefficient Model
4.3.1 Air-Cooling Heat Transfer Coefficient Model
4.3.2 Water Cooling Heat Transfer Coefficient Model
4.3.3 Factors Affecting Water Cooling Heat Transfer
4.3.4 Water Cooling Heat Transfer Coefficient Model of High Pressure Jet
4.3.5 Heat Transfer Coefficient Model of Low Pressure Laminar Water Cooling
4.4 Heat Transfer Coefficient Adaptive Model
4.4.1 Heat Transfer Coefficient Self-adaptation
4.4.2 Establishment of Heat Transfer Coefficient Adaptive Model
4.5 Intelligent Temperature Control Strategy
4.5.1 Online Velocity Correction Calculation Temperature Compensation Strategy
4.5.2 Multi-objective Temperature Self-learning Strategy
4.5.3 Intelligent PID Feedback Control Strategy for Final Cooling Temperature
4.5.4 Intelligent Adaptive Control Strategy of Temperature Based on Process Industry Data
4.5.5 Cooling Strategies to Meet the Needs of Multiple Products
References
5 Production Line Layout and Product Process Design of Hot Tandem Rolling Based on the NG-TMCP
5.1 Process Requirement Analysis
5.2 UFC Process Layout and Process Characteristics
5.2.1 Temperature-Controlled Rolling Process of Rough Rolling
5.2.2 After-Rolling Front UFC Process
5.2.3 After-Rolling Back UFC Process
5.3 Overview of Product Process Development Under Typical Layout
5.3.1 High-Efficiency Rough Rolling Temperature-Controlled Rolling Process
5.3.2 After-Rolling UFC-F Process
5.3.3 After-Rolling UFC-B Process
5.3.4 After-Rolling UFC-M Process
6 Development and Application of Low Cost Plain Carbon Steel (TMCP-F)
6.1 Microstructure Control Mechanism of C-Mn Steel Based on UFC
6.1.1 Grain Refinement Under UFC Condition
6.1.2 Substructure Refinement Under UFC Condition
6.2 Fine Grain Strengthening Mechanism Based on UFC
6.3 Industrial Application and Effect of UFC Process in Plain Carbon Steel
References
7 Development of Economical High Performance Thick-Gauge Pipeline Steel (TMCP-B)
7.1 Development Background
7.2 Study on Microstructure Uniformity of Thick-Gauge Pipeline Steel in UFC Process
7.2.1 Characterization of Microstructure Uniformity of Thick-Gauge Pipeline Steel
7.2.2 Strengthening Mechanism of Thick-Gauge Pipeline Steel
7.2.3 Effect of Cooling Rate on Microstructure Uniformity and DWTT Property
7.2.4 Effect of Cooling Strategy on Hardness Uniformity
7.3 Study on Toughening and Crack Arrest Mechanism of Thick-Gauge Pipeline Steel in UFC Process
7.3.1 Toughening and Crack Arrest Mechanism of Thick-Gauge Pipeline Steel
7.3.2 Fracture Separation Mechanism of Thick-Gauge Pipeline Steel
7.4 Microstructure Refinement Behavior of Thick-Gauge Pipeline Steel at High Cooling Rate
7.4.1 Study on the Law of Microstructure Evolution of Pipeline Steel at High Cooling Rate
7.4.2 Microstructure Refinement Mechanism of Pipeline Steel at High Cooling Rate
7.5 Research on Microstructure Control Strategy of Thick-Gauge Pipeline Steel
7.5.1 Phase Transformation Kinetic Behavior of Pipeline Steel
7.5.2 Phase Transformation Behavior of AF and BF in Pipeline Steel
7.5.3 Application of Microstructure Control Strategy in Industrial Production
7.6 Industrial Development and Production of High-Grade Thick-Gauge Pipeline Steel Based on UFC Process
References
8 Development of High-Grade Pipeline Steel with Low Internal Stress (TMCP-B)
8.1 Development Background
8.2 Internal Stress Simulation and Study on Strengthening Mechanisms of High-Grade Pipeline Steel
8.2.1 Stress Simulation for Pipeline Steel at Different Coiling Temperatures
8.2.2 Research and Analysis of Influencing Factors for Pipeline Steel with Low Internal Stress
8.2.3 Analysis of Thermal Simulation Experiments for Pipeline Steel with Low Internal Stress
8.2.4 Discussion on “Fine Grain-Precipitation” Coupled Strengthening Mechanism Based on UFC
8.3 Research on Hot Rolling Process of Pipeline Steel with Low Internal Stress Based on UFC
8.3.1 Mechanical Properties and Microstructures at Different Coiling Temperatures
8.3.2 Contribution of Different Strengthening Mechanisms
8.3.3 Temperature Simulation for the Production Process of Pipeline Steel with Low Internal Stress
8.3.4 Industrial Trial Production of Pipeline Steel with Low Internal Stress
8.4 Mass Production of Hot Rolled Pipeline Steel with Low Internal Stress
8.4.1 Stress Conditions of Hot Rolled 19.65 mm X70 Steel Coil with Low Internal Stress
8.4.2 Properties of Hot Rolled 19.65 mm X70 Pipeline Steel Coil with Low Internal Stress
8.4.3 Study on Property Uniformity of Hot Rolled 19.65 mm X70 Coils with Low Internal Stress
References
9 Development of Low-Cost Hot Rolled Dual Phase Steel (TMCP-M)
9.1 Development Background
9.2 The Mechanism of Microstructure Control in Economical Hot Rolled Plain Carbon F-M Dual Phase Steel
9.2.1 Effects of Austenite Stabilizers on Phase Transformation Behavior of Hot Rolled Dual Phase Steel
9.2.2 Effect of Austenite Grain Size on Phase Transformation Behavior of Hot Rolled Dual Phase Steel
9.2.3 Effect of Hardened State of Austenite on Phase Transformation Behavior of Hot Rolled Dual Phase Steel
9.2.4 Isothermal Austenite to Ferrite Transformation and Effect on Transformation Behavior of Untransformed Austenite
9.2.5 F-M Dual Phase Microstructure Control Mechanism
9.3 Microstructure and Properties Control and Development of Nano-precipitation Strengthened Hot Rolled Dual Phase Steel
9.3.1 Study on Microstructure Evolution of Ti-Bearing Hot Rolled Dual Phase Steel
9.3.2 Microstructure Control Mechanism of Ti-Bearing Hot Rolled Dual Phase Steel During Hot Rolling
9.3.3 Precipitation Strengthening in Hot Rolled Dual Phase Steel and Its Effect on Martensite Transformation
9.3.4 Design and Development of Hot Rolled F-M Dual Phase Steel with High Stretch-Flangeability
9.4 Control and Strengthening-Toughening Mechanism of Fine Grain and Precipitation Strengthened Hot Rolled Dual Phase Steel
9.4.1 Effect of Cooling Rate on Grain Size and Precipitation Behavior of Hot Rolled Dual Phase Steel
9.4.2 Comprehensive Fine Grain and Precipitation Strengthening Mechanisms in Hot Rolled Dual Phase Steel
9.4.3 Strain Hardening Behavior of Hot Rolled Dual Phase Steel Based on Grain Refinement and Nano-precipitation Strengthening
9.4.4 Influence Mechanism of Fine Grain and Nano-sized Precipitates on the Toughness of Hot Rolled Dual Phase Steel
9.5 Application of Back UFC System in Industrial Production of Hot Rolled Dual Phase Steel
References
10 Development of Hot Rolled Q&P Steel with High Product of Strength and Elongation (TMCP-M)
10.1 Development Background
10.2 Simulation and Research of Compression Deformation in Austenite Zone-Direct Q&P Process
10.2.1 Simulation and Research of Isothermal Partitioning-Based HRQ&P Process
10.2.2 Simulation and Research of Dynamic Partitioning-Based HRQ&P Process
10.2.3 Comparison of Isothermal Partitioning and Dynamic Partitioning Processes
10.3 Microstructure and Property Control of HRQ&P Steel with High Product of Strength and Elongation (PSE)
10.3.1 Experiment Materials and Methods
10.3.2 Microstructure and Property Control of Dual Phase HRQ&P Steel Consisting of Martensite + Retained Austenite
10.3.3 Microstructure and Property Control of Multi-phase HRQ&P Steel Consisting of Ferrite + Martensite + RA
10.3.4 Key Points for HRQ/B&P Process Control and Preparation of Multi-grade Sections
10.4 Study on Thermodynamic Behavior of Carbon Partitioning and Stabilization Mechanism of Retained Austenite (RA)
10.4.1 Experiment Materials and Methods
10.4.2 Experimental Study on Dynamic Carbon Partitioning Behavior
10.4.3 Study on the Synergistic Partitioning Mechanism of Ferrite and Martensite
10.4.4 Thermal/Kinetic Simulation of Dynamic Carbon Partitioning Behavior
10.5 Industrial Trial Production of Low Carbon Hot Rolled Q&P Steel
10.5.1 Microstructure of Trial-Produced Steel Plate
10.5.2 Evaluation of Impact, Tensile and Bending Properties of Trial-Produced Steel Plates
References
List of Publications
Index