©
COPYRIGHT 1998 THE ESAB GROUP, INC. TABLE
OF CONTENTS LESSON
I THE BASICS OF
ARC WELDING PART
A.
AN
INTRODUCTION TO
METALS Section
Nr.
Section
Title Page
1.1 Source
and Manufacturing.............................................................
1
1.1.1 Rimmed
Steel ...................................................................................
2 1.1.2
Capped
Steel ....................................................................................
2 1.1.3
Killed
Steel ........................................................................................
3 1.1.4
Semi-Killed
Steel...............................................................................
3 1.1.5
Vacuum
Deoxidized Steel .................................................................
3 1.2
Classification
of Steels...................................................................
3 1.2.1
Carbon
Steel .....................................................................................
3 1.2.2
Low
Alloy Steel..................................................................................
3 1.2.3
High
Alloy Steel .................................................................................
4 1.3
Specifications .................................................................................
5 1.4
Crystalline
Structure of Metals ......................................................
6 1.4.1
Grains
and Grain Boundaries ...........................................................
7 1.5
Heat
Treatment ................................................................................
8 1.5.1
Preheat .............................................................................................
8 1.5.2
Stress
Relieving ................................................................................
9 1.5.3
Hardening .........................................................................................
9 1.5.4
Tempering .........................................................................................
9 1.5.5
Annealing ..........................................................................................
9 1.5.6
Normalizing .......................................................................................
10 1.5.7
Heat
Treatment Trade-Off .................................................................
10 1.6
Properties
of Metals........................................................................
10 1.6.1
Tensile
Strength ................................................................................
10 1.6.2
Yield
Strength....................................................................................
11 1.6.3
Ultimate
Tensile Strength ..................................................................
11 1.6.4
Percentage
of Elongation .................................................................
11
