Mamiya Econotig Welding Processes Requiring High Frequency, Incorrect Installation, Weld Zone

SECTION 9 − HIGH FREQUENCY

9-1. Welding Processes Requiring High Frequency

		1 High-Frequency Voltage
		Helps arc jump air gap between
		torch and workpiece and/or
1		stabilize the arc.
	Work
	TIG	high_freq1 11/96 − S-0693

9-2. Incorrect Installation

	Weld Zone
	11, 12
50 ft
(15 m)
	10
9	14
8

7

3

13 2

1

4 5 6

S-0694

Sources of Direct High-Frequency Radiation

1High-Frequency Source (welding power source with built-in HF or separate HF unit)

2Weld Cables

3Torch

4Work Clamp

5Workpiece

6Work Table

Sources of Conduction of High		Sources of Reradiation of High
Frequency		Frequency
7	Input Power Cable	10	Ungrounded Metal Objects
8	Line Disconnect Device	11	Lighting
9	Input Supply Wiring	12	Wiring
		13	Water Pipes and Fixtures
		14	External Phone and Power Lines

OM-303 Page 20