Color coated steel plate technology

Author: Zhu Lixu, Xu Xiaolian
Publisher:
Publishing Date: 2005-05-01
Features: Color-coated steel plate refers to the product obtained by applying organic coatings to the surface of steel plate, which has been widely used in various industries such as construction, transportation, furniture, and electrical appliances. This book systematically introduces the production status, production process, and quality control of color-coated steel plates. The content includes the development of color-coated steel plates, the base plates and coatings used in the production of color-coated steel plates, the production process flow and equipment, surface treatment of base plates, coating application of strip steel, coating curing and film formation, post-processing processes such as multi-layering and embossing, safety and environmental protection in production, quality management in production, product quality inspection, and color-coated steel plate products and applications. This book can be used as a reference for personnel engaged in the development, production, and management of color-coated steel plates, and can also serve as a reference for metallurgical, construction, and home appliance design and production technical personnel.
Introduction: Color-coated steel plate refers to the product obtained by applying organic coatings to the surface of steel plate, which has been widely used in various industries such as construction, transportation, furniture, and electrical appliances. This book systematically introduces the production status, production process, and quality control of color-coated steel plates. The content includes the development of color-coated steel plates, the base plates and coatings used in the production of color-coated steel plates, the production process flow and equipment, surface treatment of base plates, coating application of strip steel, coating curing and film formation, post-processing processes such as multi-layering and embossing, safety and environmental protection in production, quality management in production, product quality inspection, and color-coated steel plate products and applications. This book can be used as a reference for personnel engaged in the development, production, and management of color-coated steel plates, and can also serve as a reference for metallurgical, construction, and home appliance design and production technical personnel.
Table of Contents
Table of Contents
Chapter 1 Development of Color-Coated Steel Plates
1.1 Development of Color-Coated Steel Plates Abroad
1.1.1 Development of Color-Coated Steel Plate Production
1.1.2 Development of Color-Coated Steel Plate Production Process
1.2 Development of Domestic Color-Coated Steel Plate Production Technology
1.3 Domestic Color-Coated Steel Plate Production Status
1.3.1 Overview of the Early Stage of Domestic Color-Coated Steel Plate Production
1.3.2 Recent Development of Domestic Color-Coated Steel Plate Production
References
31
Chapter 2 Base Plates Used in the Production of Color-Coated Steel Plates
2.1 General Requirements for Base Plates in Color-Coated Steel Plate Production
2.1.1 Plate Shape
2.1.2 Corrosion Resistance
2.1.3 Surface Condition
2.1.4 Processing Performance
2.2 Commonly Used Base Plates for Color-Coated Steel Plates
2.2.1 Cold-Rolled Steel Plate
2.2.2 Hot-Dip Galvanized Steel Plate Base
2.2.3 Electroplated Zinc Steel Plate
2.2.4 TFS Steel Plate
2.3 Quality Management of Base Plates
2.3.1 Ordering of Base Plates
2.3.2 Acceptance and Warehousing of Base Plates
2.3.3 Inspection and Acceptance of Base Plates
2.3.4 Quality Inspection of Hot-Dip Galvanized Steel Plates
2.3.5 Quality Management of Electroplated Zinc Base Plates
2.3.6 Performance and Test Methods of TFS Base Plates
References
51
Chapter 3 Coatings Used in the Production of Color-Coated Steel Plates
3.1 Basic Composition and Properties of Coatings
3.2 Pigments and Dispersion
3.3 Solvents and Diluents
3.3.1 Solvent Solubility
3.3.2 Solvent Viscosity and Surface Tension
3.3.3 Solvent Evaporation and Volatility
3.3.4 Commonly Used Solvents
3.4 Common Additives in Coatings
3.4.1 Additives for Adjusting Surface Tension (Leveling Agents)
3.4.2 Surfactants
3.4.3 Additives Affecting Surface Gloss
3.4.4 Other Additives
3.5 Some Properties of Coatings
3.5.1 Viscosity of Coatings
3.5.2 Thixotropy of Coatings
3.5.3 Leveling Property of Coatings
3.5.4 Formation of Shrinkage Holes in Coatings
3.5.5 Adhesion of Coatings
3.6 Commonly Used Coatings in Color-Coated Steel Plate Production
3.6.1 Polyester Polyurethane
3.6.2 Silicone-Modified Polyester Resins
3.6.3 Polyacrylic Coatings
3.6.4 Polyvinyl Chloride Coatings
3.6.5 Fluorocarbon Coatings
3.6.6 Water-Based Coatings
3.7 Primer, Binder, and Back Coat
3.7.1 Epoxy Primer
3.7.2 Polyester Primer
3.7.3 Back Coat
3.8 Functional Coatings
3.8.1 Anti-Ice and Snow Coatings
3.8.2 Drainage Coatings
3.8.3 Writing Board Coatings
3.9 Powder Coatings
3.10 Use of Coatings
3.10.1 Common Properties of Coatings
3.10.2 Overview of Domestic Color-Coated Steel Plate Coatings
3.11 Acceptance and Inspection of Coatings
3.11.1 Raw Material Acceptance
3.11.2 Sampling and Acceptance
3.11.3 Preliminary Inspection of Coatings
3.11.4 Systematic Inspection of Coating Properties
3.11.5 Inspection of Long-Term Stored Coatings
References
108
Chapter 4 Process Flow and Equipment for the Production of Color-Coated Steel Plates
4.1 Overview
4.1.1 General Process Flow for Color-Coated Steel Plate Production
4.1.2 Brief Description of the Process Flow
4.2 Overview of Equipment for Color-Coated Steel Plate Production Lines
4.2.1 WeanUnited (SIMMCO) Line
4.2.2 Demag Line
4.2.3 Nippon Steel (NKK) Line
4.2.4 AIST Line
4.3 Equipment and Setup of Color-Coated Steel Plate Production Lines
4.3.1 Entry Section Equipment
4.3.2 Process Section Equipment Setup
4.3.3 Exit Section Equipment
4.4 Auxiliary Buildings and Equipment Maintenance in the Workshop
4.4.1 Auxiliary Buildings in Coating Production Workshop
4.4.2 Maintenance and Spare Parts of Coating Production Lines
References
140
Chapter 5 Surface Treatment of Base Plates
5.1 Necessity of Surface Treatment of Base Plates
5.2 Surface Degreasing and Cleaning of Metal Base Plates
5.2.1 Cleaning and Removal of Liquid Oil
5.2.2 Spinning Mechanism During Cleaning of Liquid Oil
5.2.3 Cleaning of Solid
5.2.4 Basic Role of Surfactants in Aqueous Cleaning
5.2.5 Aqueous Degreasing Cleaning Detergents
5.2.6 Aqueous Degreasing Cleaning Corrosion Inhibitors
5.2.7 Mechanism and Development of Control Theory for Alkali Degreasing
5.2.8 Inspection of Cleaning Effect
5.2.9 Examples of Several Degreasing Cleaning Processes
5.3 Phosphating Treatment of Base Plates
5.3.1 Properties of Phosphating Film
5.3.2 Types of Phosphating
5.3.3 Conversion Phosphating Process
5.3.4 Analysis and Control of Phosphating Solution
5.3.5 Phosphating of Different Metals
5.3.6 Conversion Phosphating
5.3.7 Defects and Prevention Methods of Phosphating Film
5.3.8 Removal of Phosphating Film
5.4 Surface Activation and Adjustment Treatment
5.4.1 Adjustment Treatment of Steel Surfaces
5.4.2 Alkaline Activation Treatment of Galvanized Surfaces
5.4.3 One-Step Cleaning and Adjustment Treatment
5.4.4 Acidic Surface Adjustment Treatment of Galvanized Plates
5.5 Surface Chromium Treatment
5.5.1 Roller Coating Chromium Treatment
5.5.2 Composition and Properties of Coating-Type Chromium Treatment Film
5.5.3 Effect of Heating on Chromium Treatment Film
5.5.4 Determination of Corrosion Resistance of Surface Pretreatment Film Using Scanning Vibrating Electrode
5.5.5 Passivation Treatment After Phosphating
References
194
Chapter 6 Coating Application of Strip Steel
6.1 Overview
6.1.1 Spray Coating Process of Strip Steel
6.1.2 Coating Spray
6.1.3 Roller Coating Process of Strip Steel
6.2 Coating Operation of Roller Coating Machines
6.2.1 Operation of Coating Machine Dosing Rollers
6.2.2 Measurement of Wet Film Thickness
6.2.3 On-Line Measurement of Coating Thickness
6.2.4 Operation Mode of Roller Coating Machine
6.2.5 Control of Coating Application Thickness
6.3 Coating Supply and Mixing of Coating Machines
6.4 Conversion of Coating Viscosity Measured by Different Viscometers
6.5 Stripes of Coating
References
205
Chapter 7 Curing and Film Formation of Coatings
7.1 Mechanism of Curing and Film Formation of Coatings
7.1.1 Physical Film Formation Mechanism of Coatings
7.1.2 Chemical Curing Mechanism of Coatings
7.2 Curing and Film Formation After Coating Application
7.2.1 Electron Beam Scanning Curing
7.2.2 Curing Using Ultraviolet Light
7.2.3 Infrared Heating Curing
7.2.4 Induction Heating Curing
7.2.5 Comparison of Several Curing Methods
7.3 Hot-Air Heating Curing
7.3.1 Hot-Air Oven Curing
7.3.2 Effect of Oven Temperature on Strip Steel Heating
7.3.3 Air-Cushion (Suspension) Baking Oven
7.4 Measurement of Strip Steel Temperature
7.4.1 Measurement of Strip Steel Temperature Using Temperature Labels
7.4.2 Measurement of Strip Steel Temperature Using Infrared Thermometers
7.4.3 Continuous Temperature Measurement Using Thermocouples or Thermometers
7.5 Inert Gas Circulation Method for Hot-Air Heating
7.6 Oil Deposition in Hot-Air Ovens and Preventive Measures
7.7 Cooling After Coating Baking and Curing
References
219
Chapter 8 Post-Processing Processes of Multi-Layering and Embossing
8.1 Multi-Layer Steel Plate Products and Their Production Process
8.1.1 General Production Process of Multi-Layer Steel Plates
8.1.2 Multi-Layer Steel Plate Products
8.2 Production of Polyester Multi-Layer Steel Plates
8.2.1 Multi-Layering of Polyester Films
8.2.2 Biaxial Orientation Value and Degree of PET Film
8.2.3 Heat Conduction Process During Multi-Layering
8.3 Coating Printing and Embossing
8.3.1 Printing Process of Color-Coated Steel Plates
8.3.2 Embossing Process of Color-Coated Steel Plates
8.4 Coating, Waxes, and Films of Color-Coated Steel Plates
8.4.1 Surface Coating
8.4.2 Coating with Protective Film
References
235
Chapter 9 Safety and Environmental Protection in the Production of Color-Coated Steel Plates
9.1 Coating Machine Room and Fire Prevention
9.2 Explosion Prevention of Hot-Air Baking Ovens
9.3 Treatment of Waste Gases During Heating and Curing
9.3.1 Secondary Circulation and Incineration of Waste Gases from Hot-Air Baking Ovens
9.3.2 Other Methods for Treating Waste Gases
9.4 Wastewater Treatment of Color-Coated Steel Plate Production Lines
9.4.1 Generation of Wastewater
9.4.2 Toxicity of Chromium and Fluorine
9.4.3 Wastewater Treatment
9.4.4 Development of New Surface Treatment Processes to Reduce Wastewater Generation
9.5 Workshop Labor Environment
9.5.1 Lighting and Illumination
9.5.2 Temperature and Humidity
9.5.3 Workshop Dust Prevention and Ventilation
References
247
Chapter 10 Quality Management in the Production of Color-Coated Steel Plates
10.1 Content of Quality Management
10.2 Quality Defects and Causes in Coating Application and Curing
10.2.1 Quality Defects Appearing After Coating Application and Curing
10.2.2 Defects Appearing Before and After Coiling
10.2.3 Defects Appearing After Long-Term Storage of Products
10.2.4 Quality Factors to Be Controlled in Production
10.3 Consumption Indicators for the Production of Color-Coated Steel Plates
References
255
Chapter 11 Quality Inspection of Color-Coated Steel Plate Products
11.1 Requirements for Performance Quality of Color-Coated Steel Plates
11.2 Quality and Inspection of Color-Coated Steel Plate Products
11.2.1 On-Site Inspection of Color-Coated Steel Plates
11.2.2 Sampling of Test Pieces
11.2.3 Inspection Methods of Color-Coated Steel Plates
11.2.4 Comparison of Test Standards of Color-Coated Steel Plates from Several Countries
References
279
Chapter 12 Products and Applications of Color-Coated Steel Plates
12.1 Economic Benefits of Using Color-Coated Steel Plates
12.2 Types and Applications of Color-Coated Steel Plates
12.2.1 Types of Color-Coated Steel Plates
12.2.2 Uses of Color-Coated Steel Plates
12.3 Application of Color-Coated Steel Plates in the Home Appliance Industry
12.4 Application of Color-Coated Steel Plates in the Construction Industry
12.5 Connection of Color-Coated Steel Plates During Use
12.5.1 Connection and Fixation of Color-Coated Steel Plates
12.5.2 Welding of Color-Coated Steel Plates
12.5.3 Common Fasteners for Connecting Color-Coated Steel Plates
12.6 Other Matters During Use of Color-Coated Steel Plates
12.6.1 Packaging of Color-Coated Steel Plates
12.6.2 Transportation of Color-Coated Steel Plates
12.6.3 Storage of Color-Coated Steel Plates
12.6.4 Elimination of Storage and Transportation Defects of Color-Coated Steel Plates
12.7 Repair and Re-coating of Color-Coated Steel Plates
References
298
Chapter 13 Prospects for Color-Coated Steel Plates
13.1 Development Trends of Color-Coated Steel Plate Production
13.2 Development Direction of Color-Coated Steel Plates
13.2.1 Demand Direction for Color-Coated Steel Plates
13.2.2 Development Direction of Color-Coated Steel Plate Production Technology
13.2.3 Joint Development of Color-Coated Steel Plates in China
References
301