Instructions / Assembly

75
GMAW
www.lincolnelectric.com
Joint Spacing
Temporary
Backing
t
2t
(A)
Joint Spacing
(B)
Joint Spacing
1
/16” - 3/32”
(
1.6 - 2.4mm)
60° - 90°
or
110°
(D)
Joint Spacing
3
/16” (4.8mm)
60° - 90°
(C)
Joint Spacing
1
/16” -
3
/32” (1.6 - 2.4mm)
90°
(E)
Joint Spacing
1/16” - 3/32”
(1.6 - 2.4mm)
t/4
1/2”
(12.7mm)
t
Temporary
Backing
60°
(F)
Joint Spacing
t up to
3
/8” (9.5mm)
3
/8” for t>
3
/8” (9.5mm)
1
1
/2” (38mm)
t
Permanent
Backing
(G)
t up to
3
/8” (9.5mm)
3
/8” for t>
3
/8” (9.5mm)
1
1
/2” (38mm)
1
/ 16 ” (1.6mm)
60°
t
Permanent
Backing
(H)
60°
t
t2
(I)
(J)
(K)
t/4
Welding Joint Designs for Aluminum MIG Welding
Groove Welding — Flat, Horizontal, Vertical and Overhead
Welding Guidelines for Aluminum