Welding and Cutting Operation Skills

Author: Li Yajiang, Wang Juan, Liu Peng
Publisher:
Publishing Date: 2005-05-01
Features: Introduction
Practical skills in welding production are a very important aspect. Without numerous operators who have mastered various technical principles, many important welding and cutting tasks cannot be completed. This book is aimed at welding and cutting operators, providing a concise explanation of the key points of welding and cutting operations and quality control from a practical perspective. It strives to be innovative in concept, unique in material selection, and highlights practicality. The book does not delve into systematic and in-depth theoretical discussions but focuses particularly on the description of practical and operational techniques. It helps readers develop welding and cutting skills, teaching them methods to solve welding and cutting problems and some special techniques. This book is primarily intended for operators, engineering technicians, management personnel, and quality inspectors engaged in welding and cutting technology-related work, especially for intermediate and advanced technical workers. It can also be used as a reference for teaching and research personnel in universities and research institutions.
Table of Contents
Table of Contents
Chapter 1 Overview
1.1 Welding Methods and Applicability
1.1.1 Basic Characteristics of the Welding Process
1.1.2 General Steps of Welding Structure Production
1.1.3 Common Welding Methods
1.2 Welding Materials and Selection
1.2.1 Welding Electrodes and Selection
1.2.2 Welding Wires and Selection
1.2.3 Welding Fluxes and Selection
Chapter 2 Manual Arc Welding Operation Technology
2.1 Classification and Characteristics of Manual Arc Welding
2.1.1 Classification of Manual Arc Welding
2.1.2 Characteristics of Manual Arc Welding
2.2 Equipment and Tools for Manual Arc Welding
2.2.1 Requirements for Manual Arc Welding Power Supply
2.2.2 Models and Technical Characteristics of Manual Arc Welding Machines
2.2.3 Common Manual Arc Welding Machines and Maintenance
2.3 Manual Arc Welding Process
2.3.1 Groove Form and Welding Position
2.3.2 Welding Process Parameters
2.3.3 Basic Welding Steps
2.4 Manual Arc Welding Operation Technology
2.4.1 Basic Operations of Manual Arc Welding
2.4.2 Operation Techniques for Various Welding Positions
2.4.3 Examples of Manual Arc Welding Operations
Chapter 3 Gas Welding Operation Technology
3.1 Characteristics and Equipment of Gas Welding
3.1.1 Process Characteristics of Gas Welding
3.1.2 Composition of Gas Welding Equipment
3.1.3 Properties of Oxygen-Acetylene Flame
3.1.4 Gas Welding Wires and Fluxes
3.2 Key Points of Gas Welding Operation Technology
3.2.1 Basic Operations of Gas Welding
3.2.2 Gas Welding Operations for Different Position Joints
3.2.3 Key Points of Gas Welding for Tubes
3.2.4 Key Points of Gas Welding for Tube-Plate Joints
3.3 Examples of Gas Welding Operations
3.3.1 Gas Welding of Aluminum Storage Tanks
3.3.2 Welding and Repair of Copper Alloy Bearings
3.3.3 Welding and Repair of Cast Iron Parts
3.3.4 Gas Welding of T-Joints
Chapter 4 Gas Cutting Operation Technology
4.1 Characteristics and Equipment of Gas Cutting
4.1.1 Principle and Characteristics of Gas Cutting
4.1.2 Gas Cutting Equipment and Devices
4.2 Gas Cutting Process and Operation
4.2.1 Process Parameters and Influencing Factors of Gas Cutting
4.2.2 Key Points of Gas Cutting Operation
4.3 Carbon Arc Gouging and Operation
4.3.1 Characteristics and Applicability of Carbon Arc Gouging
4.3.2 Carbon Arc Gouging Equipment and Key Points of Operation
4.3.3 Examples of Carbon Arc Gouging Applications
4.4 Examples of Cutting Technology Operations
4.4.1 Gas Cutting of Grooves
4.4.2 Gas Cutting of Steel Plates
4.4.3 Gas Cutting of Round Bars and Steel Tubes
4.4.4 Cutting of Corners and Arcs
Chapter 5 Welding Deformation and Control
5.1 Classification and Characteristics of Welding Joints
5.1.1 Classification of Welding Joints
5.1.2 Characteristics of Welding Joints
5.2 Welding Stress and Deformation
5.2.1 Causes of Stress and Deformation
5.2.2 Influencing Factors of Welding Deformation
5.3 Measures to Prevent Welding Deformation
5.3.1 Design Measures to Prevent Deformation
5.3.2 Process Measures to Prevent Deformation
5.3.3 Correction of Deformation in Welded Structures
5.3.4 Design of Welding Joints
Chapter 6 CO2 Gas Shielded Welding Operation Technology
6.1 Classification and Characteristics of CO2 Gas Shielded Welding
6.1.1 Classification of CO2 Gas Shielded Welding
6.1.2 Characteristics of CO2 Gas Shielded Welding
6.2 CO2 Gas Shielded Welding Equipment and Accessories
6.2.1 Composition of CO2 Gas Shielded Welding Equipment
6.2.2 Welding Power Supply and Control System
6.2.3 Wire Feeding Mechanism, Welding Gun, and Gas Circuit
6.3 CO2 Gas Shielded Welding Process
6.3.1 Groove Design and Pre-Welding Preparation
6.3.2 Process Parameters of CO2 Gas Shielded Welding
6.3.3 Key Points of CO2 Gas Shielded Welding Operation
6.3.4 Applications of CO2 Gas Shielded Welding
6.4 Flux-Cored Wire CO2 Gas Shielded Welding
6.4.1 Characteristics of Flux-Cored Wire CO2 Gas Shielded Welding
6.4.2 Equipment and Process Parameters of Flux-Cored Wire CO2 Gas Shielded Welding
6.4.3 Applications of Flux-Cored Wire CO2 Gas Shielded Welding
Chapter 7 Inert Gas Shielded Welding Process and Operation
7.1 Classification and Characteristics of Inert Gas Shielded Welding
7.1.1 Classification of Inert Gas Shielded Welding
7.1.2 Process Characteristics of Inert Gas Shielded Welding
7.1.3 Applicability of Inert Gas Shielded Welding
7.2 Tungsten Arc Gas Shielded Welding Process and Operation
7.2.1 Characteristics of Tungsten Arc Gas Shielded Welding Power Supply
7.2.2 Electrodes and Shielding Gases
7.2.3 General Procedure of Tungsten Arc Gas Shielded Welding
7.2.4 Process Parameters and Selection of Tungsten Arc Gas Shielded Welding
7.2.5 Operation Techniques of Tungsten Arc Gas Shielded Welding
7.3 Melted Metal Arc Gas Shielded Welding Process and Operation
7.3.1 Characteristics of Melted Metal Arc Gas Shielded Welding Droplet Transition
7.3.2 Equipment and Materials of Melted Metal Arc Gas Shielded Welding
7.3.3 Process Parameters of Melted Metal Arc Gas Shielded Welding
7.3.4 Examples of Melted Metal Arc Gas Shielded Welding Operation
Chapter 8 Submerged Arc Automatic Welding Operation Technology
8.1 Characteristics and Equipment Composition of Submerged Arc Automatic Welding
8.1.1 Characteristics of Submerged Arc Automatic Welding
8.1.2 Equipment Composition of Submerged Arc Automatic Welding
8.2 Submerged Arc Automatic Welding Process
8.2.1 Pre-Welding Preparation
8.2.2 Selection of Welding Wire and Flux
8.2.3 Welding Process Parameters
8.2.4 Welding Defects and Preventive Measures
8.3 Submerged Arc Automatic Welding Operation Skills and Examples
8.3.1 Basic Operation Techniques
8.3.2 Key Points of Operation Process
8.3.3 Examples of Submerged Arc Automatic Welding
Chapter 9 Plasma Arc Welding and Cutting
9.1 Characteristics and Applicability of Plasma Arc Welding
9.1.1 Characteristics of Plasma Arc Welding
9.1.2 Classification of Plasma Arc and Welding
9.1.3 Applicability of Plasma Arc Welding
9.2 Plasma Arc Welding Equipment and Process
9.2.1 Composition of Plasma Arc Welding Equipment
9.2.2 Plasma Arc Welding Process and Parameters
9.2.3 Micro-Beam Plasma Arc Welding Process
9.2.4 Examples of Plasma Arc Welding Applications
9.3 Plasma Arc Cutting Operation Technology
9.3.1 Characteristics of Plasma Arc Cutting
9.3.2 Classification of Plasma Arc Cutting Methods
9.3.3 Composition of Plasma Arc Cutting Equipment
9.3.4 Plasma Arc Cutting Process
Chapter 10 Surfacing Operation Technology
10.1 Characteristics and Surfacing Materials of Surfacing
10.1.1 Methods and Characteristics of Surfacing
10.1.2 Application Range of Surfacing
10.1.3 Selection of Surfacing Materials
10.2 Key Points of Surfacing Process and Operation
10.2.1 Manual Arc Surfacing
10.2.2 Oxygen-Acetylene Flame Surfacing
10.2.3 Gas Shielded Surfacing and Plasma Arc Surfacing
10.2.4 Examples of Surfacing Operations
10.3 Performance Testing of Surfacing Layers
10.3.1 Hardness Testing of Surfacing Layers
10.3.2 Fracture Resistance Testing of Surfacing Layers
10.3.3 Metallographic Testing of Surfacing Layers
10.3.4 Wear and Corrosion Resistance Testing
Chapter 11 Welding Defects and Inspection
11.1 Common Welding Defects and Preventive Measures
11.1.1 Characteristics of Common Welding Defects
11.1.2 Common Defects in Different Welding Operations and Preventive Measures
11.2 Inspection of Welding Joints
11.2.1 Visual Inspection of Welds
11.2.2 Non-Destructive Testing of Welds
11.2.3 Leak Tightness Testing of Welds
11.2.4 Mechanical Property Testing
11.3 Welding Quality Evaluation and Control
11.3.1 Welding Quality Evaluation
11.3.2 Factors Affecting Welding Quality and Control
Chapter 12 Welding Safety and Protection
12.1 Welding Electrical Safety
12.1.1 Safe Voltage
12.1.2 Causes and Preventive Measures for Electric Shock
12.2 Welding Operation Safety
12.2.1 Safety of Fusion Welding Operations
12.2.2 Safety of Gas Welding and Cutting Operations
12.3 Welding Protection Measures
12.3.1 Process Measures for Welding Protection
12.3.2 Personal Protective Measures
References