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Перенос электродного металла при сварке в защитных газах

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MIG/MAG short-circuiting
metal transfer
- Welding conditions for this metal transfer mode
- Its advantages and limitations
NTUU “KPI”, UFU, PWI TQC
E1813-01
Ponomarev V., Slivinsky A.
Transfer modes versus welding
current and arc voltage
Ua
CO2, or argon
based mixtures
Argon based mixtures
Transition
current
Streaming rotating
Globular
Streaming
Spray
MIG-Pulsed
Short-circuiting
NTUU “KPI”, UFU, PWI TQC
E1813-01
Iw
Ponomarev V., Slivinsky A.
Principle of MIG/MAG short-circuiting
metal transfer
Iw (A)
Ua (V)
Iw
50
200
40
150
30
100
20
10
50
Ua
0
0
10
NTUU “KPI”, UFU, PWI TQC
20
t (ms)
E1813-01
0
Ponomarev V., Slivinsky A.
Examples of MIG/MAG
short-circuiting metal transfer
In an argon based
shielding atmosphere
with a restricted
short-circuit current
NTUU “KPI”, UFU, PWI TQC
In an argon based
shielding atmosphere
with a low inductance
of the welding circuit
E1813-01
MAG-CO2
welding
MAG-CO2 optimised
metal transfer
Ponomarev V., Slivinsky A.
Welding conditions and application
sphere of the short-circuiting transfer
Short-circuiting transfer welding conditions:
1. Low and moderate welding current;
2. Low arc voltage;
3. Shielding: CO2 or argon based mixtures.
Application spheres:
1. Welding of thin materials (due to a low
heat input);
2. Out-of-position welding.
NTUU “KPI”, UFU, PWI TQC
E1813-01
Ponomarev V., Slivinsky A.
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