Assembly Instructions

0
0
1
4
L
A
S
E
R
Laminar flow Fig. 2-50
For welding applications with a strong production of splashes
and vapor, a crossjet can be used. The crossjet must be
adjusted to allow the shielding gas to flow unaffected by the
crossjet gas.
Tip
With a simple test, it can be checked if the crossjet was
adjusted optimally:
Keep a paper strip over the workpiece and adjust the gas pres-
sure to such a level that the paper strip is not pushed down or
drawn in by the crossjet.
5.7 Effect of the shielding gas
The different shielding gases have different effects. They influ-
ence the form of the weld seam and can generate seam surfa-
ces which are smoother and glossier. The formation of pores in
the weld seam and spatter formation can be influenced by the
selection of the shielding gas.
The incoupling of laser light is deteriorated by a shielding gas!
Argon (Ar)
Helium (He) Nitrogen (N
2
) without shielding
gas
Seam shape
b = width
t = depth
b
t
b
t
b
t
b
t
Seam surface ++ + + -
22-50-17-CRen 2020-01
Using shielding gas
2‐55
Crossjet