How To Spot Weld Aluminum Sheet

Use 1 hand to hold the metal so you can use the other to press down the handle.

How to spot weld aluminum sheet.

Use three phase electrical energy to spot weld aluminum. This type of electrical power is wanted for the big output current that spot welding requires. A beginner s guide to welding brazing aluminum with alumiweld rods. If this is not possible tightly cover them with approved covers.

Spot welding typically brings current for 0 1 seconds or less so the current must be very high. In a typical spot welding application there are two electrodes opposite each other which squeeze the metal pieces together. Spot welding machines typically deliver 150 amps per phase draw on a 440 volt system. Welding aluminum is not as hard as you think.

Remove all flammables within 35 ft 10 7 m of the weld. The harder alloys are generally more easy to weld conversely pure aluminium is not recommended for spot welding. Its primary usage is in welding auto body and sheet metal. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick.

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. Protect yourself and others from flying sparks and hot metal. 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.

Insert the metal between the 2 electrode tongs. Thus spot welding diameters go from 3mm to 12 5mm. The ration of thickness should not exceed 3 1mm. 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.

This squeezing pressure is controlled. Turns out you can weld aluminum without a welder. Do not spot weld where flying sparks can strike flammable material. Keep the metal still as you ready the tongs to spot weld and fuse them together.

It makes for a very strong bond and with a little practice can be done quickly with great looking results.