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Welder’s Handbook
Miscellaneous A discontinuity consisting of any localized re-melted metal, heat effected metal, or change in surface profile of a finished weld or base mate-rial surface resulting from an electrical arc. Note: Arc strikes may develop stress risers, which could lead to cracking. Arc Strikes Causes: Shrinkage of molten metal at weld root. Incorrect weld preparation or insufficient heat input. Incorrect welding technique.
The metal particles expelled during welding that do not form a part of the weld. Splatter Causes: Excessive amperage Too long an arc length Excessive weaving of the electrode. -Too fast a rate of travel. - Angle of electrode too inclined to the joint face Result: A stress concentration site and a potential site for fatigue
Insufficient arc energy to produce a positive penetration bead. An excessively thick root face. Excessive backing pressure. Slag flooding in MMAW.
Excessive Splatter
Result: Reduces
static
and
fatigue
strengths when excessive.
Arc Strikes
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