Griding A Weld On Sheet Metal

A100 a30 fine grinding third ste.

Griding a weld on sheet metal.

The aim here is to grind the joint down to a level and continuous surface with the rest of the parent metal. Continue the same way along the sides of the piece of sheet metal. Another issue with grinding wheels is that they are fragile. Welds tend to have dips up and down so holding the grinder at an angle could cause it to gouge into the metal.

As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. These are essentially layered squares of sandpaper bonded onto a plastic or composite disc. Overhead work where the weight of the grinder is important. 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.

But there s no getting around it. K36 k120 pre grinding second step. High where overgrinding is a concern such as thin walled sheet metal. 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.

Initial weld grinding the first stage of weld finishing is the same. Kfs 125 ce ii va. 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. But the devil s in the details.

At every process upstream most precision sheet metal fabricators employ at least some level of automation. Hold the grinding disc as level as you can to the piece of metal. For weld clean up on sheet metal there are much better tools available. The act of grinding can be deceivingly simple.

Removing weld splatter without overgrinding 50 grit or finer. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire. It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. The removal of excess stock from the weld itself.

Grinding down a weld on a formed workpiece is and probably will remain an intensely manual operation.