How To Spot Weld Aluminum Sheet

Tig welding sheet metal.

How to spot weld aluminum sheet.

I m simply a self taught welder and thought i could pass on a tip that has helped me along the way. It makes for a very strong bond and with a little practice can be done quickly with great looking results. It s also easy to do with a spot welding machine which has 2 electrode tongs about 6 inches 15 cm long that pass an electrical current through the metal to fuse them together. Here s a quick video on how to plug weld sheet metal using mig without blowing yourself a bigger hole than you started with.

Share this trick and if. Spot welding uses the heat from an electrical current to join 2 pieces of metal quickly and is typically used for joining sheet metal. 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.

This type of electrical power is wanted for the big output current that spot welding requires. Pro welders probably spot wel. The standard bs en iso 18595 resistance welding spot welding of aluminium and aluminium alloys weldability welding and testing provides useful guidelines. Forget the larger 1 8 inch tungsten electrode and use a smaller one.

Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. Turns out you can weld aluminum without a welder. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Use three phase electrical energy to spot weld aluminum.

My names matt urch and i own and. In this video i ll show you a fast and easy way to remove auto body spot welds without breaking the teeth off of the spot weld cutting tool. Spot welding machines typically deliver 150 amps per phase draw on a 440 volt system. In this video lazze shows how you can spot weld aluminum with a standard 220 volt spot welder that is probably already in your shop.