Spot Welding Sheet Metal

To weld sheet metal with solid wires use electrode positive ep or reverse polarity.

Spot welding sheet metal.

Vehicle manufacturers use resistance spot welding in the factory. Mig welding is the preferred method for most automotive bodywork and since sheet metal is the thinnest of metals a large expensive mig unit is usually not required. The process uses two shaped copper alloy electrodes to concentrate welding current into a small spot and to simultaneously clamp the sheets. Everyone is different but those settings will get you in the right ballpark to weld sheet metal.

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. Resistance spot welding is the joining of overlapping pieces of metal by applying pressure and electrical current. 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.

Tig welding sheet metal. The majority of the sheet metal welding i ve done was with a 90 amp 110 volt welder. These joints created by resistance spot welding form a button or fused nugget resistance spot welds are found typically on flanges staggered in a single row of consecutive welds. 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. I keep it short and to the point in this welding instructional video and show how ve. 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. A good heat setting for 1 8 6011 rods on thin material is about 80 90 amps.

For 3 32 7018 s it s about the same. 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.