How To Spot Weld Aluminum Sheet

Spot welding machines typically deliver 150 amps per phase draw on a 440 volt system.

How to spot weld aluminum sheet.

Its primary usage is in welding auto body and sheet metal. Aluminium oxide which forms naturally on the aluminium surface has a very high electrical resistance. Insert the metal between the 2 electrode tongs. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick.

Do not spot weld where flying sparks can strike flammable material. Remove all flammables within 35 ft 10 7 m of the weld. 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.

Links to the tools and materials leah uses in this video. This is because the strength of the joints depends on the number and size of the weld. Be alert that welding sparks can easily go through small cracks and openings to adjacent areas. Use three phase electrical energy to spot weld aluminum.

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. Protect yourself and others from flying sparks and hot metal. This squeezing pressure is controlled. Welding aluminum is not as hard as you think.

It makes for a very strong bond and with a little practice can be done quickly with great looking results. The ration of thickness should not exceed 3 1mm. Spot welding typically brings current for 0 1 seconds or less so the current must be very high. 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.

Hold the handle of the vice grip pliers and move the metal between the 2 tongs. If this is not possible tightly cover them with approved covers. Turns out you can weld aluminum without a welder. The harder alloys are generally more easy to weld conversely pure aluminium is not recommended for spot welding.

Keep the metal still as you ready the tongs to spot weld and fuse them together.