How To Spot Weld Aluminum Sheet

In a typical spot welding application there are two electrodes opposite each other which squeeze the metal pieces together.

How to spot weld aluminum sheet.

Insert the metal between the 2 electrode tongs. Spot welds are formed when a large amount of current is passed through the panels for the correct amount of time and with the correct amount of pressure. It makes for a very strong bond and with a little practice can be done quickly with great looking results. Use three phase electrical energy to spot weld aluminum.

This squeezing pressure is controlled. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick. Keep the metal still as you ready the tongs to spot weld and fuse them together. The harder alloys are generally more easy to weld conversely pure aluminium is not recommended for spot welding.

The ration of thickness should not exceed 3 1mm. Use 1 hand to hold the metal so you can use the other to press down the handle. Hold the handle of the vice grip pliers and move the metal between the 2 tongs. Spot welding machines typically deliver 150 amps per phase draw on a 440 volt system.

A beginner s guide to welding brazing aluminum with alumiweld rods. This type of electrical power is wanted for the big output current that spot welding requires. This instructable will teach you how to use a propane torch and some aluminum brazing rods as a quick way to bond aluminum without using a welder. Its primary usage is in welding auto body and sheet metal.

Protect yourself and others from flying sparks and hot metal. Welding aluminum is not as hard as you think. Thus spot welding diameters go from 3mm to 12 5mm. If this is not possible tightly cover them with approved covers.

Links to the tools and materials leah uses in this video. Remove all flammables within 35 ft 10 7 m of the weld. Spot welding typically brings current for 0 1 seconds or less so the current must be very high. Aluminium oxide which forms naturally on the aluminium surface has a very high electrical resistance.

Be alert that welding sparks can easily go through small cracks and openings to adjacent areas.