Tips and help for tig welders - application tips for safe, successful tig
tips to experts offer for tig welding? Below are various tips for tig welding...
TIG welding process tips
Use a good process for thin metals. It takes a clean process to produce
perfect tig welds. Always utilize Argon shielding for steel, stainless, and
Electrodes & Amperage TIG welding Tips
One good tig welding tip: choose the right type and size of tungsten
electrode for your amperage. If the diameter is too small, tungsten can cause
the tip to ball up. The ball might drop into the weld pool and contaminate the
weld. Too large a diameter of tungsten can result in a non directional arc.
Tig welding tips: Never grind both ends of the tungsten.
Another great tig welding tip is to use the right size of ceramic nozzle.
Too small, and it'll cause turbulence that could contaminate your weld
pool. Too large and you'll waste shielding gas.
Tig welding tips: Once the welding arc is initiated, raise the torch angle
to nearly 90%. This prevents elongated weld pools and reduces any chance of the
weld not breaking through the oxide layer on the surface of the aluminum. It
also gives you maximum gas cover.
Another good tig welding tip is this: when you add filler wire to the tig
welding pool, don't draw the wire tip outside the gas shield. This helps you
Power source tips for tig welding aluminum
When tig welding, use DC-Straight Polarity (DCEN) for steel and stainless
steel. Use AC for aluminum. Always use a push technique with the TIG torch to
achieve the best tig welding results. Match the tungsten electrode size with the
More specific metal tig welding tips
Tips: When tig welding aluminum, use a pure tungsten, AWS Class EWP (green
identifying band). When tig welding steel and stainless steel use a 2% thoriated
tungsten, AWS Class EWTH-2 (red identifying band). Prepare a pointed-end for
TIG welding tips from Murex
Useful Tips for TIG Welding is a new four page guide from Murex Welding
Products which provides a useful insight into successful and safe TIG welding.
It discusses both AC and DC TIG welding practice and gives full details of all
the machines available from the company.
TIG Tips stresses the importance of selecting the correct type and size of
tungsten electrode and nozzles for AC applications.
It also discusses practical points such as the importance of torch angle.
For DC applications, aspects such as tungsten preparation, selection of filler
materials and electrical current settings are stressed. Copies of Useful Tips
for TIG Welding are available free of charge by calling Murex Welding Products
Free TIG welding tips Poster from Murex
All welding departments or workshops should have a copy of Murex Welding
Products' guide to the TIG (Tungsten Inert Gas) welding process. This
wall-chart provides practical information on this technology including details
of the process, equipment selection and modes of TIG welding operation. Split into easy-to-read sections with applications of the process and a guide to
working with TIG proving particularly useful. Murex is currently giving copies
away free. Contact Murex for more information.
Tips for TIG welding 4130 thin-wall Steel Tubing
4130 thin-wall tubing is used for sport aircraft, racing cars, and other
serious home TIG welding projects.
There is an age-old debate regarding which is better for welding 4130 -- gas
or TIG. Many experts believe that TIG is superior to gas welding. Someone
with years of experience can gas weld 4130 just fine, but if you want joints
with the same high quality (and a smaller heat affected zone) with minimal
practice, TIG is the choice.
When TIG welding thin-wall 4130 tubing, no preheating is required, other
than bringing it up to room temperature and ensuring that no obvious moisture
is present on the tubing.
Likewise, no "post heating" or normalization is required either, but a
draft-free work area is important.
Keep the tig weld bead as small as possible to minimize the heat-affected
The best welding rod to use is ER80S-D2, ER70S-2, -3, or -6, in that
order. Copper coated rods, which prevents the rod from rusting, are also fine.
Wipe the oils (used in manufacturing) off of the rods before you use them
045" diameter rod is best for thin-wall, but it's rare
TIG welding tips: Stainless Steel
Use aluminum foil to enclose the backside of stainless steel you intend to
Argon is flowed into the resulting volume, eliminating the "brown sugar"
chromium oxide that normally results on the unprotected backside.
Use the correct wire type for the base metal being welded. Use stainless
steel wires for stainless steel, aluminum wires for aluminum, and steel wires
TIG welding tips: Aluminum
The metal most often associated with TIG welding is aluminum, especially
with metals of a smaller thickness.
Many other processes can join aluminum, but in the lighter gauges the most
applicable process is TIG.
Mechanically strong and visually appealing, TIG welding is the top method
for professional racing teams and hobbyists
Aluminum has some characteristics that you must consider if you want to
weld with good results
Pure aluminum has a melting point less than 1200º F and doesn't exhibit
color changes before melting - it won't tell you when it's hot and on the
verge of melting
Oxide forms fast on aluminum's surface, and has a melting point
almost three times as high, over 3200º. Aluminum boils at a lower temperature
than this oxide melts
The oxide is heavier than aluminum and, when melted, tends to sink into
the molten aluminum.