Miller-electric Blue Star 6000 User Manual download pdf (Page 52)

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12-19. Troubleshooting − Burn-Through

Burn-Through − weld metal melting completely through base metal resulting

in holes where no metal remains.

Possible Causes Corrective Actions

Excessive heat input. Select lower amperage. Use smaller electrode.

Increase and/or maintain steady travel speed.

12-20. Troubleshooting − Waviness Of Bead

Waviness Of Bead − weld metal that is not parallel and does not cover

joint formed by base metal.

Possible Causes Corrective Actions

Unsteady hand. Use two hands. Practice technique.

12-21. Troubleshooting − Distortion

Distortion − contraction of weld met-

al during welding that forces base

metal to move.

Base metal moves

in the direction of

the weld bead.

Possible Causes Corrective Actions

Excessive heat input. Use restraint (clamp) to hold base metal in position.

Make tack welds along joint before starting welding operation.

Select lower amperage for electrode.

Increase travel speed.

Weld in small segments and allow cooling between welds.

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Miller-electric Blue Star 6000 User Manual Page 52