WC-478 08/15 ©Lincoln Global, Inc. All Rights Reserved.

SHIELDED METAL ARC WELDING GAS METAL ARC WELDING

(A)(A) (B)(B) (C)(C) (D)(D) (E)(E) (F)(F) (G)

(A) Proper wire feed speed (WFS), voltage, electrical stick-out (ESO) and travel speed

(B) WFS too low

(C) WFS too high

(D) Electrical stick-out (ESO) too short

(E) Electrical stick-out (ESO) too long

(A) Proper current, travel speed & arc length

(B) Current too low

(C) Current too high

(F) Travel speed too slow

(G) Travel speed to fast

(H) Inadequate gas coverage

(D) Arc length too short

(E) Arc length too long

(F) Travel speed too slow

(G) Travel speed to fast

15°

Drag Angle

Push Angle

15°

(G) (H)

Effects of Welding Variables