Daihen varstroj VARMIG 1605D PROFIMIG, Руководство пользователя

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The deposition rate required
The bead profile desired
The position of welding
Cost of the wire
Range of welding current and voltage in CO2 welding
5.2.11. The option of the welding speed
The welding quality and productivity should be taken into consideration for the option of welding speed. In case
that the welding speed increases, it weakens the protection efficiency and speeds up the cooling process. As a
consequence, it is not optimal for the seaming. In the event that the speed is too slow, the work piece will be
easily damaged, and the seaming is not ideal. In practical operation, the welding speed should not exceed
1m/min.
5.2.12. The length of wire stretching out
The length of wire stretching out the nozzle should be appropriate. The increase of the length of wire stretching
out of the nozzle can improve the productivity, but if it is too long, excessive spatter will occur in the welding
process. Generally, the length of wire stretching out the nozzle should be 10 times as the welding wire
diameter.
5.2.13. The setting of the C0
2
flow volume
The protection efficiency is the primary consideration. Besides, inner-angle welding has better protection
efficiency than external-angel welding. For the main parameter, refer to the following figure.
Option of C0
2
flow volume
Welding mode Thin wire C02 welding Thick wire C02 welding
Thick wire, big current
C02 welding
C0
2
（
L/min
）
5
～
15 15
～
25 25
～
50
Wireφ(mm)
Short circuit transition Granular transition
Current
（
A
）
Voltage (V) Current
（
A
）
Voltage (V)
0.6 40~70 17~19 160~400 25~38
0.8
60~100 18~19 200~500 26~40
1.0
80~120 18~21 200~600 27~40