Spot Welding Stainless Steel Sheet

For thicker base pieces step up to 035 inch to 045 inch welding wire.

Spot welding stainless steel sheet.

Sparks can fly off from the welding arc. Weld time and or weld power need to be increased to spot weld galvanized steel. There are some goo. When mig welding galvanized steel the weld puddle is 2550 degrees f.

3 3 austenitic stainless steel the austenitic stainless steels contain 16 26 cr 8 24 ni mn up to 0 40 c and small amounts of a few other elements such as mo ti nb cb and ta. To most manufacturers spot welding is the most economical way to join two pieces of sheet metal. For mig welding stainless steel a shielding gas mixture that s 90 percent helium 7 5 percent argon and 2 5 percent carbon dioxide is generally ideal. The balance between the cr and ni mn is normally adjusted to provide a microstructure of 90 100.

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. Post weld heat treatment to soften and toughen the weld. To weld sheet metal with solid wires use electrode positive ep or reverse polarity.

Key words resistance spot welding stainless steel dissimilar metal welding optimization failure analysis mechanical properties microstructure. With these materials use a tri mix gas 90 helium 8 argon and 2 co 2. Welding of steel is done at 2550 degrees f. I seldom use my spot welder but for certain situations it is the right tool for the job.

It has got lot of applications in the field of automobile industries. Darkmoon metals is a home based business start up i have dec. Jeff explains spot welding and gives a short demo welding stainless steel sheet. For most jobs welding stainless steel you ll want to use 030 inch diameter stainless steel welding wire.

Recently i had a job that required spot welding. The flying sparks hot workpiece and hot equipment can cause fires and burns. Check and be sure the area is safe before doing any welding. When welding 304 stainless steel er308 er308l and er308lsi wires are compatible but for welding 316l stainless you need a 316l wire.

Spot welding is a popular way of joining two sheets of thin metal such as stainless steel. Spot welding can cause fire or explosion. Resistance spot welding is widely used in sheet metal fabrication as an important metal joining process.