22 Wear-O-Matic
3 No AWS Classification
DCEP or DCEN (Electrode Positive or
Negative) Open
Arc—Buildup Alloy High
Impact Resistance Carbon
Steels; Low Alloy Steels Description:
Wear-O-Matic 3 wire is a buildup alloy
for multiple layer application on all weldable carbon and
low alloy steels.
Recommended for the rebuilding of carbon
and low alloy steel parts prior to hardsurfacing or for use where
a machinable resurfacing alloy is required.
Procedure: The
recommended amperage range is 225-350 amperes at 30-40 arc volts. A weaving technique
is recommended
when a machinable deposit or multiple layer buildup is desired. Stringer beads
may be used; however,
this produces a harder deposit and should be limited to three passes.
Preheat is not required for crack and
porosity free weld metal. A 200°F (98°C) preheat is recommended to
prevent excessive deposit hardness
when a small deposit is to be applied to a heavy section and the
deposit is to be machined. The requirement
for preheat usually depends on the properties of the base
metal. The higher alloy steels generally
require some preheat. Continued
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