Welding Overlap Seam Auto Sheet Metal

A seam is then made by cutting down the middle of the overlap with a west cut 4 inch cutoff wheel and peeling back the remaining strip of metal.

Welding overlap seam auto sheet metal.

The holes are in the floor and not the outside body. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Because it will have you a lot more control over the whole process and it is more forgiving in case you do anything wrong. This is because the strength of the joints depends on the number and size of the weld.

Forget the larger 1 8 inch tungsten electrode and use a smaller one. 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. You can now place a tack weld between the clecos but be very careful to make sure the panels are perfectly even. Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal.

And let s say i want to stitch weld the seams that is not a continuous weld for the full length of the overlap. To be specific if i have two sections of say 1 8 x6 x6 steel plate that overlap each other by 3 and say i want to weld the two parallel pieces together. Its primary usage is in welding auto body and sheet metal. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick.

How to plug weld auto body sheet metal prevent. Lap joints are made by overlap ping small amounts of metal and welding the exposed edges of each section to the other on one or on both sides. Tig welding sheet metal. Welding patch panels lap or butt.

I will be welding soon on a couple small spots on my 69 camaro. This video shows how to mig weld long seams in auto body repair. Lakeside autobody 44 996 views. The ration of thickness should not exceed 3 1mm.

Thus spot welding diameters go from 3mm to. My question is when i weld in the new sheet metal should i overlap the existing metal or cut a perfect patch and seam weld the metal. The majority of the sheet metal welding i ve done was with a 90 amp 110 volt welder.