Miller Blue Star 145DX Manual Del Proprietário página 49

13-9. Groove (Butt) Joints
1
3
13-10. Lap Joint
2
13-11. Tee Joint
45
Or
2
Less
°
30
1/16 in.
(1.6 mm)
°
30
Or Less
1
3
1
°
2
1
Prevent edges of joint from draw-
ing together ahead of electrode by
tack welding the materials in posi-
tion before final weld.
2
2
Good for materials up to 3/16 in. (5
mm) thick.
3
Good for materials 3/16 − 3/4 in.
(5-19 mm) thick. Cut bevel with
oxyacetylene or plasma cutting
equipment. Remove scale from
material after cutting. A grinder can
also be used to prepare bevels.
Create 30 degree angle of bevel on
materials in V-groove welding.
4
Good for materials thicker than
4
3/16 in. (5 mm).
1
2
Move electrode in circular motion.
3
°
30
Weld a second layer when a heavi-
Or Less
er fillet is needed. Remove slag be-
fore making another weld pass.
1
Weld both sides of joint for maxi-
mum strength.
1
2
Keep arc short and move at defi-
nite rate of speed. Hold electrode
as shown to provide fusion into the
corner. Square edge of the weld
surface.
For maximum strength weld both
sides of upright section.
1
3
Weld a second layer when a heavi-
er fillet is needed. Use any of the
weaving patterns shown in Section
13-8. Remove slag before making
3 another weld pass.
Tack Welds
Square Groove Weld
Single V-Groove Weld
Double V-Groove Weld
S-0062
Electrode
Single-Layer Fillet Weld
Multi-Layer Fillet Weld
S-0063 / S-0064
Electrode
Fillet Weld
Multi-Layer Deposits
S-0060 / S-0058-A / S-0061
OM-248 551 Page 45