Griding A Weld On Sheet Metal

The best tool for weld finishing is the flap disc.

Griding a weld on sheet metal.

Welds tend to have dips up and down so holding the grinder at an angle could cause it to gouge into the metal. Grinding down a weld on a formed workpiece is and probably will remain an intensely manual operation. The removal of excess stock from the weld itself. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire.

Kfs 125 ce ii va. It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. K36 k120 pre grinding second step. Say if you are welding an 18 gauge stainless steel sheet that is 2 2 feet in size to repair the side of your tank start by creating a weld that is 1inch long then skip 6 inches and then create a 1 inch long weld.

In this demo see the 2 step weld removal and paint prep process using a 3m cubitron ii flap disc 969f and a scotch brite light grinding and blending disc. Continue the same way along the sides of the piece of sheet metal. But there s no getting around it. At every process upstream most precision sheet metal fabricators employ at least some level of automation.

Made of compressed composites if they get in a bind or crack from heat they can shatter sending brutal shrapnel all over the place including your face. The act of grinding can be deceivingly simple. Initial weld grinding the first stage of weld finishing is the same. Better surface finish than a grinding wheel or fiber disc grit for grit.

High where overgrinding is a concern such as thin walled sheet metal. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. Removing weld splatter without overgrinding 50 grit or finer. Keep your grinding disc nearly parallel to the metal so the grinder smoothes out the edges of your weld even to the sheet metal.

These are essentially layered squares of sandpaper bonded onto a plastic or composite disc. Another issue with grinding wheels is that they are fragile. The aim here is to grind the joint down to a level and continuous surface with the rest of the parent metal. But the devil s in the details.

Hold the grinding disc as level as you can to the piece of metal.