How To Spot Weld Aluminum Sheet

Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick.

How to spot weld aluminum sheet. Hold the handle of the vice grip pliers and move the metal between the 2 tongs. Use 1 hand to hold the metal so you can use the other to press down the handle. The ration of thickness should not exceed 3 1mm. In a typical spot welding application there are two electrodes opposite each other which squeeze the metal pieces together.

Protect yourself and others from flying sparks and hot metal. Aluminium oxide which forms naturally on the aluminium surface has a very high electrical resistance. Keep the metal still as you ready the tongs to spot weld and fuse them together. A beginner s guide to welding brazing aluminum with alumiweld rods.

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. Its primary usage is in welding auto body and sheet metal. Use three phase electrical energy to spot weld aluminum.

Turns out you can weld aluminum without a welder. Be alert that welding sparks can easily go through small cracks and openings to adjacent areas. Remove all flammables within 35 ft 10 7 m of the weld. 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.

The harder alloys are generally more easy to weld conversely pure aluminium is not recommended for spot welding. If this is not possible tightly cover them with approved covers. Do not spot weld where flying sparks can strike flammable material. Spot welding typically brings current for 0 1 seconds or less so the current must be very high.

Thus spot welding diameters go from 3mm to 12 5mm. 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. 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.