Spot Welding Sheet Steel

When mig welding galvanized steel the weld puddle is 2550 degrees f.

Spot welding sheet steel.

Tig welding sheet metal. Forget the larger 1 8 inch tungsten electrode and use a smaller one. 14 pack spot weld cutter sets double sided 3 8 hss spot weld cutter remover drill bits hex sheet metal hole cutter remover for power drill spot welding 4 6 out of 5 stars 44 17 98 17. Everyone is different but those settings will get you in the right ballpark to weld sheet metal.

Weld time and or weld power need to be increased to spot weld galvanized steel. The ration of thickness should not exceed 3 1mm. Learn how to mig weld automotive sheet metal in about 5 minutes or less. Spot welding or resistance spot welding is a type of electric resistance welding used to weld various sheet metal products through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current.

Just grab a piece of sheet metal to get the heat set correctly and go to town. To most manufacturers spot welding is the most economical way to join two pieces of sheet metal. I keep it short and to the point in this welding instructional video and show how ve. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick.

To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Thus spot welding diameters go from 3mm to. For 3 32 7018 s it s about the same. As the weld current is applied the higher resistance of the steel steel interface causes the steel side to heat up rapidly while the aluminum aluminum side acts as the heat sink.

Welding of steel is done at 2550 degrees f. Its primary usage is in welding auto body and sheet metal. It should be obvious even to the causal observer that if you put 2550 degree liquid steel over a galvanized coating that boils at 1350 degrees f. While joining sheet metal is the most common use for the process resistance welding rw equipment actually can be used for a large variety of joining and heat treating projects some of which are not so well known.

Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. The process uses two shaped copper alloy electrodes to concentrate welding current into a small spot and to simultaneously clamp the sheets.