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Welding guide 1 CNotes Arc Welding Structural Contact rod ?? easy to use Structural Contact rod ?? low hydrogen harder to use Heat rod dia amps i e ? rod would be amps Oxy Acetylene To weld aluminum preheat sheets thicker than ? ? to ? deg Temperature can

CNotes Arc Welding Structural Contact rod ?? easy to use Structural Contact rod ?? low hydrogen harder to use Heat rod dia amps i e ? rod would be amps Oxy Acetylene To weld aluminum preheat sheets thicker than ? ? to ? deg Temperature can be estimated by coating the surface with oxy acetylene soot then heat just until the soot disappears C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C How do I TIG weld How-To Weld Summary Establish an arc Create a weld puddle Add ?ller metal dip into the puddle while pushing the weld puddle along the weld joint End the arc and leave the torch over the weld puddle to protect it until the puddle cools How do I get started TIG welding See your Owner's Manual for complete safety precautions and procedures Safety Make sure you have all the necessary safety equipment and appropriate clothing For example ? Dry hole-free insulating gloves and body protection ? Approved welding helmet ?tted with a proper shade of ?lter lenses to protect your face and eyes when welding or watching ? Approved safety glasses with side shields under your helmet ? Protective clothing made from durable ame-resistant material leather heavy cotton or wool and foot protection C Torch Placement Hold the TIG torch in your hand at a or angle Raise the torch so that the tungsten is o ? of the work piece no more than to in Don't let the tungsten touch the work piece or it will contaminate your material and you will need to regrind your tungsten Foot Pedal Control Practice controlling the heat with the foot pedal to see the weld puddle increase and decrease Ideally you want your weld puddle to be about inch wide Keep your puddle size consistent so it doesn't grow shrink spread or narrow while you are welding Filler Metal Pick up your ?ller metal in your other hand so it rests horizontally at a angle from the work piece - not pointed down Heat up the base metal and gently dab the ?ller into the puddle Dab rather quickly so you don't leave large deposits How do I prepare my weld joint Clean Cleaning both the weld joint area and the ?ller metal is an important preparation Remove all oil grease dirt paint etc The presence of these contaminants may result in arc instability or contaminated welds Clamp Clamping may be required if the work piece cannot be supported during welding Tack weld Make short in tack welds along the work pieces to hold them together How do I position my TIG torch for di ?erent types of joints Butt welds When welding a butt joint center the weld pool