Page 152 - Welding of Aluminium and its Alloys

Table 7.2 Suggested welding parameters – argon shielding

Thickness Root gap/ Included angle Backing Current Voltage No. of Filler diam. Travel speed
(mm) face (mm) (degrees) (A) (V) passes (mm) (mm/min)

1.6 nil Square Temporary 100 19 1 0.6 1000
2.5 Square Permanent 100 19 1 0.6 1000
2.4 nil Square Temporary 140 21 1 0.6 1000
3.2 Square Permanent 130 23 1 0.6 780
3.2 2.5 Square Temporary 160 24 1 1.2 780
5 Square Permanent 135 23 1 1.2 720
4 1.5 Square None 170 26 1 face 1.2 750
1 reverse
1.5/2.5 60 Temporary 160 27 1 1.2 750
single-V
4.5/1.5 60 Permanent 185 27 2 1.6 750
single-V
6.3 2.5 Square None 200 28 1 face 1.6 750
1 reverse
2.5/2.5 60 Temporary 185 27 2 1.6 750
single-V
6/1.5 60 Permanent 225 29 3 1.6 750
single-V
8 2.5/1.5 60 Temporary 245 29 2 1.6 750
single-V
4.5/nil 60 Permanent 255 29 3 1.6 750
single-V
10 2.5/4.5 90 None 290 29 1 face 1.6 750
single-V 1 reverse
2.5/2.5 60 Temporary 275 29 2 face 1.6 900
single-V 1 reverse
4.5/nil 60 Permanent 275 26 3 1.6 800/550
single-V