Tweco 252i Fabricator - Manual (Page 74)

FABRICATOR 252i BASIC WELDING
BASIC WELDING 4-14 Manual 0-5155
Art # A-07709
Figure 4-34: 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 4-35: Welding Sequence
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4
3
2
1
Figure 4-36: Step back Sequence
Art # A-07428_AB
Figure 4-37: Chain Intermittent Welding
Art # A-07713_AB
Figure 4-38: Staggered Intermittent Welding
Electrode Selection Chart
Metal Being Joined Electrode Comments
Mild Steel E6010 This electrode is used for all-position welding or for welding on
rusty, dirty, less-than-new metal. It has a deep, penetrating arc and is
used for pipe and repair welding.
Mild Steel E6011 This electrode is used for all-position welding on sheet metal or
for welding on plated, dirty, painted or greasy steel. It has a deep,
penetrating arc and is often the first choice for repair or maintenance
work.
Mild Steel E6013 This all-position, electrode is used for welding clean, new sheet
metal. Its soft arc has minimal spatter, moderate penetration and an
easy-to-clean slag.
Mild Steel E7014 All positional, easy to use electrode for use on thicker steel than
E6013. Especially suitable for sheet metal lap joints and fillet welds,
general purpose plate welding.
Mild Steel E7018 A low-hydrogen, all-position electrode used when quality is an
issue or for hard-to-weld metals. It has the capability of producing
more uniform weld metal, which has better impact properties at low
temperatures.
Cast Iron ENi-Cl Suitable for joining all cast irons except white cast iron.
Stainless Steel E318L-16 High corrosion resistances. Ideal for dairy work etc.
Table 4-4: Tweco Electrode Selection Chart