Spot Welding Sheet Steel

This is because the strength of the joints depends on the number and size of the weld.

Spot welding sheet steel. To resistance spot weld aluminum with steel a sheet of aluminum clad steel can be used as the transition material between the two haynes and jha 1999. Its primary usage is in welding auto body and sheet metal. 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. 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.

When mig welding galvanized steel the weld puddle is 2550 degrees f. 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. For 3 32 7018 s it s about the same. To weld sheet metal with solid wires use electrode positive ep or reverse polarity.

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. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick. Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. Forget the larger 1 8 inch tungsten electrode and use a smaller one.

Welding of steel is done at 2550 degrees f. Just grab a piece of sheet metal to get the heat set correctly and go to town. I keep it short and to the point in this welding instructional video and show how ve. Learn how to mig weld automotive sheet metal in about 5 minutes or less.

To most manufacturers spot welding is the most economical way to join two pieces of sheet metal. The process uses two shaped copper alloy electrodes to concentrate welding current into a small spot and to simultaneously clamp the sheets. Tig welding sheet metal. 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.

A good heat setting for 1 8 6011 rods on thin material is about 80 90 amps. Weld time and or weld power need to be increased to spot weld galvanized steel.