MetFab - Air Products Welder's Handbook - Flipbook - Page 5
Welding pipes and tubes
27
Defects in weld
Porosity
29
Lack of fusion/penetration
30
Undercut
31
Spatter
31
Solidification cracks
32
Useful data for MIG/MAG welding
33
Typical conditions for MAG welding of carbon/carbon manganese steel
34
Typical conditions for MIG/MAG welding with solid wire
35
Typical welding conditions for all positional rutile cored wires
38
Current ranges for MIG/MAG welding with steel wire
39
Useful data for TIG welding
Typical conditions for TIG welding with non-pulsed welding machines
40-41
Oxygen-fuel gas cutting
42
Equipment
43
Safe operating practices - oxy-fuel gas
Assembly and initial set-up
44
Purging the system
46
Lighting up
47
Shutting down
48
Oxygen and acetylene Integra® cylinder
49
The quality of a cut surface depends on a number of variables
51
Quality of cut
52
Operating techniques
52
Typical operating conditions
54
Injector torches
55
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