连铸工艺与技术(双语版)

1 Introduction
1.1 Description of Continuous Casting Process
1.2 The Development and Evolution of the Continuous Casting
1.3 The Superiority of the Continuous Casting
2 Machine Components of Continuous Casting
2.1 Main Parameters of Continuous Caster
2.1.1 Definition of a set of caster and strand
2.1.2 Range of continuously cast sections
2.1.3 Casting speed
2.1.4 Arc radius
2.1.5 Metallurgical length
2.2 The Key Machine Components of Continuous Caster
2.2.1 Ladle and ladle turret
2.2.2 Tundish and tundish car
2.2.3 Mould
2.2.4 Dummy bar systems
2.2.5 Strand support systems and secondary cooling
2.2.6 Secondary cooling
2.2.7 Strand straightening and strand withdrawal
2.2.8 Product discharge and handling
3 Heat Transfer and Strand Solidification
3.1 Mould Heat Transfer
3.2 Secondary Cooling Zone Heat Transfer
3.2.1 Solidification processing
3.2.2 The heat transfer in secondary cooling zone
3.3 Solidification of the Continuous Casting Strand
3.3.1 The solidification process
3.3.2 Solidification of the molten steel in mould
3.4 Modeling of Continuous Casting
3.4.1 Physical models
3.4.2 Computational models 3.4.3 Fluid flow models
4 Continuous Casting Process
4.1 Foreword
4.2 Treatment of Liquid Steel
4.2.1 The temperature control
4.2.2 The composition control
4.2.3 Impurities control
4.3 Tundish to Mould
4.4 Secondary Cooling
4.4.1 The control of secondary cooling
4.4.2 Strand containment
4.4.3 Strand withdrawal
4.4.4 Cooling water system
4.4.5 Casting speed control
4.5 Startup, Control of the Process and Problems
4.6 Mould Flux Powder Practice
4.6.1 Properties of mould powder
4.6.2 Effect of casting conditions on mould flux requirements
4.6.3 Mould flux requirements and design by steel grade
5 Defect and Quality Control of Continuous Casting Products
5.1 Foreword
5.2 Purity of Continuous Casting Products
5.2.1 The inclusions in the casting steel and its origin
5.2.2 Measures to decrease the inclusions in the casting steel
5.3 Surface Crack and Its Control
5.3.1 Slab surface defects and controlling
5.3.2 Surface defects in bloom and billet
5.4 Internal Defect and Its Controlling
5.4.1 Internal defects in slab
5.4.2 Internal defects in blooms and billets
5.4.3 The methods to decrease the internal defects
5.5 Shape Defects of Continuous Casting Products
5.5.1 Bulging deformation
5.5.2 Rhomboidity of casting billet
5.5.3 Deformation of round bloom
5.6 Breakout
5.6.1 Cause
5.6.2 The methods to prevent the breakout
5.6.3 Application of multivariate PCA for breakout prevention
5.7 Effect of Spray Cooling on the Quality of Continuous Casting Semis
6 New Approaches in Continuous Casting of Steel
6.1 Metallurgical Techniques of Tundish
6.1.1 Heating technology of tundish
6.1.2 Flow control in tundish
6.1.3 Tundish flux
6.1.4 Centrifugal flow tundish
6.2 The Mould-level Control
6.3 Hot Charging and Direct Rolling of Continuous Casting Slab
6.4 Soft Reduction at the Final Stage of Solidification
6.4.1 Effects of soft reduction
6.4.2 Problem of attention in soft reduction
6.5 Electromagnetic Stirring Techniques
6.5.1 Historical development of electromagnetic stirring
6.5.2 Effects of electromagnetic stirring
6.5.3 Types of electromagnetic stirrers
6.5.4 Metallurgical aspects of electromagnetic stirring
7 Special Continuous Casting Processes
7.1 Horizontal Casting
7.2 Beam Blank Casting
7.3 Thin Slab Casting
7.3.1 Problem
7.3.2 Practice
7.4 Strip Casting
7.4.1 Twin-roll casting
7.4.2 Thin strip casting of high-speed steels
1 引言
1.1 连铸工艺简介
1.2 连铸的发展及机型演变
1.3 连铸的优势
2 连铸设备
2.1 连铸机主要参数
2.1.1 连铸机机数和流数的定义
2.1.2 铸坯断面尺寸
2.1.3 拉坯速度
2.1.4 弧形半径
2.1.5 冶金长度
2.2 连铸机关键部件
2.2.1 钢包回转台
2.2.2 中间包和中间包车
2.2.3 结晶器
2.2.4 引锭杆系统
2.2.5 铸坯支撑系统和二次冷却
2.2.6 二次冷却
2.2.7 铸坯矫直和拉坯装置
2.2.8 铸坯输送和后续处理
3 连铸传热和凝固
3.1 结晶器传热
3.2 二次冷却区传热
3.2.1 二冷区凝固
3.2.2 二冷区传热
3.3 铸坯的凝固
3.3.1 凝固过程
3.3.2 结晶器中钢液的凝固
3.4 连铸模拟
3.4.1 物理模拟
3.4.2 计算模型
3.4.3 流体流动模型
4 连续铸钢工艺
4.1 引言
4.2 钢液处理
4.2.1 温度控制
4.2.2 成分控制
4.2.3 夹杂物控制
4.3 中间包到结晶器
4.4 二次冷却
4.4.1 二冷控制
4.4.2 铸坯夹持
4.4.3 拉坯
4.4.4 冷却水系统
4.4.5 拉速控制
4.5 连铸的开浇、控制及问题
4.6 结晶器保护渣
4.6.1 结晶器保护渣的特性
4.6.2 连铸工艺条件对结晶器保护渣的影响
4.6.3 钢种对结晶器保护渣的影响
5 铸坯缺陷和质量控制
5.1 前言
5.2 铸坯洁净度
5.2.1 铸坯夹杂物及其来源
5.2.2 减少夹杂物的措施
5.3 表面裂纹及其控制
5.3.1 板坯表面缺陷及其控制
5.3.2 大方坯和小方坯的表面缺陷
5.4 内部缺陷及控制
5.4.1 板坯内部缺陷
5.4.2 大方坯和小方坯的内部缺陷
5.4.3 减少内部缺陷的途径
5.5 铸坯形状缺陷
5.5.1 鼓肚变形
5.5.2 小方坯脱方
5.5.3 圆坯的变形
5.6 漏钢
5.6.1 漏钢的原因
5.6.2 防止漏钢的措施
5.6.3 多变量PCA防止漏钢
5.7 喷水冷却对铸坯质量的影响
6 连续铸钢新技术
6.1 中间包冶金
6.1.1 中间包加热技术
6.1.2 中间包流动控制
6.1.3 中间包保护渣
6.1.4 离心流中间包
6.2 结晶器液面控制
6.3 板坯热装和直接轧制
6.4 凝固末期轻压下
6.4.1 轻压下的效果
6.4.2 轻压下需要注意的问题
6.5 电磁搅拌技术
6.5.1 电磁搅拌的发展
6.5.2 电磁搅拌的作用
6.5.3 电磁搅拌器类型
6.5.4 电磁搅拌的冶金效果
7 特殊连铸工艺
7.1 水平连铸
7.2 异型坯连铸
7.3 薄板坯连铸
7.3.1 存在的问题
7.3.2 实际生产
7.4 带钢浇注工艺
7.4.1 双辊式浇注
7.4.2 高速钢薄板带连铸
参考文献