Miller Electric MARK VIII-2 manual Guidelines for TIG Welding Gtaw, Positioining The Torch

SECTION 9 − GUIDELINES FOR TIG WELDING (GTAW)

9-1. Positioining The Torch

		Y Weld current				can	damage
			electronic parts in vehicles.
			Disconnect			both	battery
			cables before welding on a
			vehicle. Place work clamp as
3			close to the weld as possible.
		1	Workpiece
2		Make		sure	workpiece		is clean
		before welding.
		2	Work Clamp
		Place as close to the weld as
	4	possible.
		3	Torch
90°		4 Filler Rod (If Applicable)
		5	Tungsten Electrode
1		Select		and	prepare		tungsten
		according to Sections 8-1, and 8-2
		or 8-3.
		Tungsten extension is the distance
		the tungsten extends out gas cup of
		torch.
10−15°		Arc length is the distance from the
		tungsten to the workpiece.
4		As a general guide, start with an
		extension and arc length equal to
5		diameter of tungsten.
10−25°

ST-161 892

9-2. Torch Movement During Welding

Tungsten Without Filler Rod
Welding direction	75°
Form pool	Tilt torch	Move torch to front
		of pool. Repeat process.
Tungsten With Filler Rod
Welding direction	75°	15°
Form pool	Tilt torch	Add filler metal

Remove rod	Move torch to front
	of pool. Repeat process.

ST-162 002-B

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