Cleaning up sheet metal welded joints
Nearly all welded joints have to be cleaned up in some way if they are to have any cosmetic appeal. The welded joints may have been TiG welded, MiG welded or brazed in ferrous or non-ferrous materials but cleaning them up will require the same techniques and equipment. The lower the grit number the coarser the surface of the grinding disk so we will often start with a 60 grit sanding disk to clean up welded joints and then work our way up to say a 120 grit or higher depending on the fineness of the final surface required by the customer.
The cleaned up joint can then be orbital sanded to produce a very smooth finish which is ideal if a part is to be powder coated. To go further than this we can get the sheet metal work polished producing highly shiny surfaces in stainless steel or even a uniformly grained effect.
To see more examples of welded sheet metal work being cleaned up please take a look at our plant web page on cleaning up.