Coat of Slag Over Weld

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Partially Chipped away to show weld

Excessive Spatter

Fine spatter is normal.

Spatter that is grainy and large is a problem.

Safety

Slag is a necessary part of a flux- core wire weld. It shields the weld from impurities. Clean off the slag with the Chipping Hammer and Wire Brush after welding.

Porosity

Small cavities or holes in the bead.

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Possible Causes and Solutions

1.Dirty workpiece or welding wire: Clean workpiece down to bare metal. Make certain that wire is clean and free from oil, coatings, and other residues.

2.Inconsistent welding speed: Maintain steady weld speed.

3.Stickout too long: Reduce stickout.

Crooked/Wavy Bead

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Possible Causes and Solutions

1.Inaccurate welding:

Use two hands or rest hand on steady surface.

2.Inconsistent welding speed: Maintain steady weld speed.

3.Stickout too long: Reduce stickout.

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Possible Causes and Solutions

1.Dirty workpiece or welding wire: Clean workpiece down to bare metal. Make certain that wire is clean and free from oil, coatings, and other residues.

2.Wire feeding too fast: Reduce wire feed speed.

3.Stickout too long: Reduce stickout.

Burn-Through

Base material melts away, leaving a hole in the weld.

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Possible Causes and Solutions

1.Workpiece overheating:

Reduce current and/or wire feed speed.

2.Welding speed too slow:

Increase welding speed and ensure that welding speed is kept steady.

3.Excessive material at weld: Reduce wire feed speed.

Setup

Basic Welding

Welding Tips

Service

SKU 98871

For technical questions, please call 1-800-444-3353.

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Harbor Freight Tools 98871 operating instructions Setup Basic Welding Welding Tips Service

98871 specifications

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