How to "Correctly" Grind, Cut & Prepare Tungsten Welding Electrodes (11 pages)

applications for tungsten welding electrodes

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DIAMOND GROUND PRODUCTS

“The Tungsten Electrode Experts”

2550 Azurite Circle Newbury Park, CA 91320 PH: 805.498.3837 FX: 805.498.9347 Web:

www.DiamondGround.com

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2. APPLICATIONS FOR TUNGSTEN WELDING ELECTRODES

ORBITAL TIG/TUBE WELDING

To produce the high quality orbital fusion welds required of today's high tech industries, tungsten
electrode shape is an important variable that must be kept consistent. Most orbital manufacturers require
a precise tungsten length.


ORBITAL TIG/PIPE WELDING

Orbital pipe welding application using TIG is primarily limited to the nuclear, pharmaceutical, and chemical
processing industries. These industries, along with a few not mentioned, require X-ray perfect orbital pipe
welds in the 125 amp - 300 amp current range.


A consistently prepared electrode is required for consistent current flow and arc voltage characteristics.
Most orbital pipe welders use 3/32 or 1/8 diameter electrodes. They also must be cut-to-length, however,
not as precise as the orbital tube welder.



MECHANIZED TIG WELDING

Mechanized TIG Welding encompasses a wide spectrum of applications such as precision bellows
welding using .040 diameter tungsten electrode at 1.0 ampere up to high speed tube mills welding with a
.250 diameter tungsten electrode using current as high as 600 amperes. A precise yet consistent
electrode will have a dramatic effect in weld results and tungsten electrode life. Cutting the tungsten
electrode is usually required if the electrode is grossly contaminated.


MANUAL TIG WELDING

Arc starting and arc stability from a consistently prepared tungsten electrode will be beneficial to the
manual welder. Most hand welding 'FIG torches require a 7.0" long electrode be cut in half to fit the
manual welding torch. This can be accomplished best with the diamond cutting mechanism described in
this booklet.


MANUAL & MECHANIZED PLASMA ARC WELDING

The plasma arc welding process requires a very precisely shaped, tungsten electrode. The tip of the
tungsten must be kept concentric to the diameter to place it in the correct position centered in the plasma
torch. This is a critical parameter adjustment in plasma arc welding. Most plasma welding torches also
require a cut-to-length tungsten electrode.

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