How To Weld Aluminium Sheet

Welding aluminum body sheet from automotive body repair news december 1995.

How to weld aluminium sheet.

To weld aluminum clamp the aluminum pieces together tightly and use a propane torch to preheat them to a temperature between 300 f and 400 f. Strike a clean welding electrode around an inch from the start of your weld then quickly move it over to the point where you want to start welding. This is the final installment of a series which began in january and continued in may. For thick aluminum that requires welding current in excess of 350 a cc produces optimum results.

The included angle of bevel may be 60 to 120 degrees. Spray arc takes a tiny stream of molten metal and sprays it across the arc from the electrode wire to the base material. Then set the amperage of your welder aim at the aluminum pieces and press the button on the torch. 4 8 mm the edges should be beveled to secure complete penetration.

Use a string bead technique as you move along the weld but be careful not to change the angle of the electrode as you proceed. Often when welding steel and stainless steel to an aluminium alloy an interlayer of pure aluminium is used which drastically reduces intermetallic formation. Constant current cc and constant voltage cv machines can be used for spray arc welding. Intermetallic compounds between friction welded steels and aluminium alloys are iron aluminium based consequently it would be expected that the brittle compounds would also be formed.

You ll also need some aluminum brazing rods. Welding without filler rod is normally limited to the pure aluminum alloys since weld cracking can occur in the higher strength alloys. How to mig weld aluminium. A beginner s guide to welding brazing aluminum with alumiweld rods.

The blue bernzomatic will work just fine but i prefer using the yellow premium touch as it s. Mig gmaw skip welds tig gtaw tack welds ofw torch crater cracks alloys fillers. I purchased all of these things at home depot. Links to the tools and materials leah uses in this video.