Tweco ArcMaster 401MST Manual de usuario Pagina 65

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ARCMASTER 401MST POWER SOURCE
Manual 0-5287 4-9 BASIC WELDING GUIDE
Art # A-07707
Figure 4-21: Principle of Presetting
Art # A-07708
B
PreheatPreheat
Dotted lines show effect if no preheat is used
Weld
C
Figure 4-22: Reduction of Distortion by Preheating
Art # A-07709
Figure 4-23: Examples of Distortion
Art # A-07710_AB
1
Block Sequence.
The spaces between the welds are
filled in when the welds are cool.
2
3
Figure 4-24: Welding Sequence
Art # A-07711_AB
4
3
2
1
Figure 4-25: Step back Sequence
Art # A-07428_AB
Figure 4-26: Chain Intermittent Welding
Art # A-07713_AB
Figure 4-27: Staggered Intermittent Welding
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