PRACTICES GMAW 01
|
PRACTICE NAME |
GAS METAL ARC WELDING FLAT |
|
PROCESS |
GAS METAL ARC WELDING |
|
POSITION |
FLAT 1F |
|
FILLER |
ER-70S-6 |
|
MACHINE SETTINGS |
18-20 V0LTS 40 WIRE SPEED 75-25 GAS |
Technique: Use a push angle as shown to weld the first pass down the center of the joint. Angle the gun to overlap the 2nd 3rd and other passes until the joint is filled to the top of the angle. Use the push angle on all passes.
After welding one side fill the other sides, alternating direction of travel.
PRACTICES GMAW 02
|
PRACTICE NAME |
GAS METAL ARC WELDING HORIZONTAL |
|
PROCESS |
GMAW |
|
POSITION |
HORIZONTAL 2F |
|
FILLER |
ER-70S-6 |
|
MACHINE SETTINGS |
18-20 VOLTS 40 WIRE SPEED 75-25 GAS |
Technique: Use the angles shown to weld the first pass. Overlap other passes to fill the angle joint completely.
For each pass let the weld pool split the prior pass in half to keep the weld straight and properly overlapped.
Overlap from passes from bottom up like stair steps.
Practice Alternating direction of travel from left to right then right to left.
Practice both push and pull angles.
PRACTICES GMAW 03
|
PRACTICE NAME |
GAS METAL ARC WELDING VERTICAL DOWN |
|
PROCESS |
GMAW |
|
POSITION |
VERTICAL DOWNWARD 3F |
|
FILLER |
ER-70S-6 |
|
MACHINE SETTINGS |
18-20 VOLTS 40 WIRE SPEED 75-25 GAS |
Technique: Use the angles shown to weld the first pass, then angle the gun to overlap the other passes until the joint is filled with weld.
Weld only from the top of the joint down to the bottom of the joint.
PRACTICES GMAW 04
|
PRACTICE NAME |
GAS METAL ARC WELDING VERTICAL UP |
|
PROCESS |
GMAW |
|
POSITION |
VERTICAL UPWARD 3F |
|
FILLER |
ER-70S-6 |
|
MACHINE SETTINGS |
18-20 VOLTS 40 WIRE SPEED 75-25 GAS |
Technique: Use the angles shown to weld the first pass then use the stringer weave to fill the joint.
When the Instructor allows use the second technique “Weave Across” to fill the joint.
Note: The stringer weave is still a weave pattern as shown but not as wide as the weave across.
PRACTICES GMAW 05
|
PRACTICE NAME |
GAS METAL ARC WELDING OVERHEAD |
|
PROCESS |
GMAW |
|
POSITION |
OVERHEAD 4F |
|
FILLER |
ER-70S-6 |
|
MACHINE SETTINGS |
18-20 VOLTS 40 WIRE SPEED 75-25 GAS |
Technique: Use the Gun angles shown to weld the first pass, then continue to fill the joint until it is flush with weld.
After 3rd weld shown place 4th weld on bottom of T to overlap 2nd weld then continue to overlap to top of T. Continue from bottom up to top of T with weld passes.
Practice with both Push and Pull angles of travel.
Change Direction of weld: Practice moving both from left to right and from right to left.