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Welding Tips

Safe

A good way to test welding technique is to examine a weld’s appearance after it has cooled and the slag has been removed. Then, better welding can be learned by adjusting your weld technique to remedy any problems found.

A typical Flux-core Wire (FCAW) Weld

before cleaning.

slag

weld bead

spatter

 

 

base metal

tupeS ingd el c W Basi

Cleaning the Weld

To prevent serious injury:

Continue to wear ANSI-approved safety goggles and protective wear when cleaning a weld. Sparks or chips may fly when cleaning.

1.A weld from flux core wire will be covered by slag, use the Chipping Hammer to knock this off. Be careful not to damage the weld or base material.

2.Then, use the Wire Brush to further clean the weld or use an angle grinder (sold separately) to shape the weld.

Chipping

Hammer

Wire Brush

Tipsingd

STRIKE TEST

A test weld on a piece of scrap can be tested by

dead-blow hammer

clamp

using the following procedure.

 

Scrap

WEAR ANSI GOGGLES DURING THIS PROCEDURE.

 

workpiece

elW

WARNING! This test will damage the weld it is performed on. This test is only an indicator of weld technique and is not intended to test working welds.

1.After two scraps have been welded together and the weld has cooled, clamp one scrap in a sturdy vise.

Good weld

bends and is not brittle

ec Servi

2. Stay clear from underneath while you

dead-blow hammer

strike the opposite scrap with a heavy

hammer, preferably a dead-blow hammer.

 

3. A good weld will deform but not break, as shown on top.

A poor weld will be brittle and snap at the weld, as shown on bottom.

clamp

Scrap

workpiece

Poor weld

snaps or cracks

Page 20

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

SKU 98871

Page 20
Image 20
Harbor Freight Tools 98871 operating instructions Welding Tips, Safe, Cleaning the Weld, ElW

98871 specifications

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