How to Weld Chromoly
- 1). Remove any burrs or sharp edges from the edges of the chrome moly tubes with a de-burring tool. Remove all imperfections within 3 inches of each welded area.
- 2). Make a mixture of baking soda and water in the bucket. The baking soda should be mixed in a 3 to 1 ratio to the water. Dip a shop towel in the mixture and clean the ends of each chrome moly tube where the welds will be made. Allow the tubes to dry.
- 3). Pour a small amount of acetone on a clean shop towel and clean the ends of each chrome moly tube where the welds will be made. Allow the tubes to dry.
- 4). Set up the tubes so that they are in the proper position to weld. The ends of the pipes should be positioned so that the gap measures between .000 and .010 inches.
- 5). Put on the welding helmet and gloves.
- 6). Set up and turn on the TIG welder. Set the current to D.C.E.N. Set the amperage rate between 20 and 40 amps and the voltage between 9 and 12 volts. Attach a pointed tungsten shape measuring 1/16 inches in diameter. Set the flow rate between 15 and 25 cubic feet per hour. Set the tracking sequence to 4 places per minute.
- 7). Hold the torch at a 70-degree angle to the surface of the weld. Hold the filler material close to the tip of the torch and between 1/8 and 1/4 inch from the surface of the weld. Position the filler material at a 15-degree angle. Use the foot pedal to activate the TIG welder and weld the two pieces together around the entire circumference of the tubes.