Sheet metal fabrications and welding.
Stainless steel seam welded joints
Stainless steel electrical connector box
Stainless steel boxes and enclosures like these can easily be welded shut at the corners by TiG welding. The TiG welding process melts some of the parent metal from each side of the joint. We can sometimes introduce a filler material in the form of a stainless steel rod of a piece of metal cut from the same sheet as the sheet metal components. This filler can help to build up larger welds if internal fillets are required on structural welds. Sometimes the joint can be left after welding with no other work done to it and sometimes it will need to be cleaned off smooth back to the parent metals surface. This joint if powder coated or wet sprayed will be invisible to the final customer and is very often used in cosmetically sensitive products.
CCTV camera mounting bracket assembly
Aluminium fabricated assemblies such as this bracket can be joined together by TiG welding without any trouble. This particular assembly had slots CNC punched on the top plate and tabs CNC punched in the side brackets. This technique enables us to position the 2 parts together accurately without the need for special welding jigs and it ensured the positional accuracy of the final assembly. The position of every bracket will be accurate and repeatable throughout the batch. This welding process is good for any gauge of aluminium from 0.9mm up to 5mm thick in our factory and in 1050A, 5251, 5005 or 6082 aluminium alloy grades.
Mild steel TiG welding
Oil reservoir tank in mild steel
If a component or fabricated assembly of sheet metal components has to have a water or in this case oil tight seal TiG welding if perfect. We have made oil tanks out of 2mm thick mild steel sheet which has been CNC punched, CNC bent up with MiG welded corner joints and TiG welded input and output ports. All the welded joints were then leak tested with dye which penetrated the joints to show up any cracks that might leak and would then need re-welding. The heat affected zone (HAZ) seen here on the sheet as a blue and brown area will be covered in a black powder coat finish before the final customer see the tank assembly so was not a problem on this assembly.
For more information on welding please take a look at welding fabrication processes