Han goc (E)

Subject Fillet welding in flat position
1
1. Finished image
2. Materials
(1) The size of
materials
(2) Welding materials
2. The shape of welding
joint
3. Tack welding and its position
(1) Tack welding condition
Tack welding
current
A
Arc voltage V
CO
2
flow rate l/min
Crater filler switch Off
2
3
(2) How to do tack welding

4


■Hold materials as “V” and do
tack welding at both ends by jig to
fix materials.
■
T he

n
lay 2 tack welding beads as shown
in the above figure.
(2) The start of
welding
(3) Aiming of the wire tip
5
■G enera
te the
arc at 10
～ 20
mm from starting point and return to the
starting point quickly.
■Aim the wire
tip at root of
welding
joint and do
not lean the
torch to each side of materials.