Section 6 - High Frequency (Hf); Welding Processes Using Hf; Sources Of Hf Radiation From Incorrect Installation - Miller Syncrowave 351 Owner's Manual

SECTION 6 – HIGH FREQUENCY (HF)

6-1. Welding Processes Using HF

6-2. Sources Of HF Radiation From Incorrect Installation

13
Sources Of Direct HF Radiation
1 HF source (welding power source with
built-in HF or separate HF unit)
2 Weld Cables
3 Torch
4 Work Clamp
OM-354 Page 26
1
Work
Gas Tungsten Arc
Welding (GTAW)
50 ft
(15 m)
9
8
7
1
5 Workpiece
6 Work Table
Sources Of Conduction Of HF
7 Input Power Cable
8 Line Disconnect Device
9 Input Supply Wiring
2
1
Work
Submerged Arc
Welding (SAW)
Weld Zone
11, 12
10
3
2
4 5 6
1 HF Voltage
GTAW – helps arc jump air gap
between torch and workpiece and/
or stabilize the arc.
SAW – helps arc reach workpiece
through flux granules.
2 Flux
high_freq1 7/95 – S-0693
14
Sources Of Reradiation Of HF
10 Ungrounded Metal Objects
11 Lighting
12 Wiring
13 Water Pipes And Fixtures
14 External Phone And Power Lines
S-0694