《Liccoln WPHB - Section 03 (Variables in Welding Fabrication)》.pdf
文本预览下载声明
Section 3
VARIABLES IN WELDING FABRICATION
SECTION 3.1
WELDMENT DISTORTION
Page
The Reasons for Distortion 3.1-1
How Properties of Metals Affect
Distortion . . . . . . . . . . . . . . . . . . . . . . . .. 3.1-3
Shrinkage Control .. . . . . . . . . . . . . . . . . .. 3.1-4
Equations for Calculating Shrinkage 3.1-7
Examples of Distortion Control 3.1-9
Shop Techniques for Distortion Control .. 3.1-17
Check List for Minimizing Distortion 3.1-19
SECTION 3.2
ARC BLOW
Magnetic Arc Blow 3.2-1
Thermal Arc Blow . . . . . . . . . . . . . . . . . . . .. 3.2-3
Arc Blow With Multiple Arcs . . . . . . . . . . .. 3.2-3
How to Reduce Arc Blow 3.2-4
The Effects of Fixturing on Arc Blow . . . .. 3.2-5
SECTION 3.3
PREHEATING AND STRESS RELIEVING
Preheating - When and Why 3.3-1
The Amount of Preheat Required 3.3-1
Methods of Preheating. . . . . . . . . . . . . . .. 3.3-3
Interpass Temperatures. . . . . . . . . . . . . . . .. 3.3-4
Preheats for Quenched and Tempered
Steels 3.3-4
Pointers on Preheat 3.3-5
Stress Relief 3.3-6
3.1-1
Weldment Distortion
There are several problems or variables common bar of steel shown
显示全部