Welding of Aluminium and Its Alloys
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Summary
The Welding of Aluminium and its Alloys provides a basic understanding of the metallurgic principles underpinning how alloys achieve their strength and how welding can effect their properties. A practical guide for the shop-floor engineer, the book covers weldability of aluminium alloys, process description, advantages, limitations, proposed weld parameters, health and safety issues, preparation for welding, quality assurance and quality control issues, and problem solving.
The book covers parent metal storage and preparation prior to welding, describes the more frequently encountered processes, and presents recommendations on welding parameters that may be used as a starting point for the development of a viable welding procedure. Providing hints and tips that help you avoid some of the pitfalls of welding these sometimes problematic materials, the book's content is both descriptive and qualitative. The Welding of Aluminium and its Alloys is a concise and effective reference for engineers who may have little prior understanding of metallurgy and only a brief acquaintance with the welding processes involved.
Table of Contents
INTRODUCTION TO THE WELDING OF ALUMINIUM
Introduction
Characteristics of Aluminium
Product Forms
Welding: A Few Definitions
WELDING METALLURGY
Introduction
Strengthening Mechanisms
Structure of Metals
Aluminium Weldability Problems
Oxide Film Removal During Welding
Hot Cracking
Strength Loss During Welding
MATERIAL STANDARDS, DESIGNATIONS AND ALLOYS
Designation Criteria
Alloying Elements
CEN Designation System
Specific Alloy Metallurgy
Filler Metal Selection
PREPARATION FOR WELDING
Introduction
Storage and Handling
Plasma-Arc Cutting
Laser Beam Cutting
Water Jet Cutting
Mechanical Cutting
Cleaning and Degreasing
WELDING DESIGN
Introduction
Access for Welding
Welding Speed
Welding Position
Edge Preparation and Joint Design
Distortion
Rectification of Distortion
Fatigue Strength of Welded Joints
TIG WELDING
Introduction
Process Principles
Mechanised/Automatic Welding
TIG Spot and Plug Welding
MIG WELDING
Introduction
Process Principles
Welding Consumables
Welding Procedures and Techniques
Mechanised and Robotic Welding
Mechanised Electro-Gas Welding
MIG Spot Welding
OTHER WELDING PROCESSES
Introduction
Plasma-Arc Welding
Laser Welding
Electron Beam Welding
Friction Welding
RESISTANCE WELDING PROCESSES
Introduction
Power Sources
Surface Condition and Preparation
Spot Welding
Seam Welding
Flash Butt Welding
WELDING PROCEDURE AND WELDER APPROVAL
Introduction
Welding Procedures
Welder Approval
WELD DEFECTS AND QUALITY CONTROL
Introduction
Defects in Arc Welding
Non-Destructive Testing Methods
Appendix A: British and ISO standards related to welding and aluminium
Appendix B: Physical, mechanical and chemical properties at 20 degrees C
Appendix C: Principal alloy designations: cast products
Appendix D: Alloy designations: wrought products
