Lincoln Electric Pro 100 User Manual download pdf (Page 29)

4. After you strike the arc, practice the correct electri-

cal stickout. Learn to distinguish it by its sound.

5. When you are sure that you can hold the correct

electrical stickout, with a smooth “crackling” arc,

start moving. Look at the molten puddle constantly,

6. Run beads on a flat plate. Run them parallel to the

top edge (the edge farthest away from you). This

gives you practice in running straight welds, and

also gives you an easy way to check your

progress. The 10th weld will look considerably bet-

ter than the first weld. By constantly checking on

your mistakes and your progress, welding will soon

be a matter of routine.

TROUBLESHOOTING WELDS

Good welds have excellent appearance.

To Eliminate Porosity (in order of importance):

1. Turn on gas supply, if used

2. Decrease voltage.

3. Increase stickout.

4. Increase WFS (wire feed speed).

5. Decrease drag angle.

6. Decrease travel speed.

NOTE: Always be sure the joint is free from moisture,

oil, rust, paint or other contaminants.

To Eliminate a Ropy Convex Bead

(in order of importance):

1. Increase voltage.

2. Decrease stickout.

3. Decrease WFS (wire feed speed.

4. Decrease travel speed.

5. Decrease drag angle.

6. Check for correct gas, if used.

To Reduce Spatter (in order of importance):

1. Increase voltage.

2. Increase drag angle.

3. Decrease stickout.

4. Increase WFS (wire feed speed).

5. Decrease travel speed.

6. Check for correct gas, if used.

To Correct Poor Penetration (in order of impor-

tance):

1. Decrease stickout.

2. Increase WFS (wire feed speed).

3. Increase voltage.

4. Decrease speed.

5. Decrease drag angle.

6. Check for correct gas, if used.

If Arc Blow Occurs (in order of importance):

NOTE: Try different ground connection locations

before adjusting procedures.

1. Decrease drag angle.

2. Increase stickout.

3. Decrease voltage.

4. Decrease WFS (wire feed speed.

5. Decrease travel speed.

To Eliminate Stubbing* (in order of importance):

1. Increase voltage

2. Decrease WFS (wire feed speed)

3. Decrease stickout

4. Increase drag angle

* Stubbing occurs when the electrode drives through

the molten puddle and hits the bottom plate tending

to push the gun up.

B-16

LEARNING TO WELD

B-16

PRO 100

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Lincoln Electric Pro 100 User Manual Page 29

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