GAS PURGING EQUIPMENT
Protection gas welding means the use of gas to protect a welded seam, usually the welded underside or root, in order to prevent oxidation which develops through contact with oxygen when the material is heated to welding temperature. In order to guarantee protection the residual oxygen in the welding area must be reduced to under 50 PPM (0.005%).
This is particularly the case with protection gas welding (any process) of not only austenitic but also ferritic steels and non ferrous metals such as titanium. The gas protection on the underside to the welding not only prevents oxidation but also assists with the shaping of the seam (e.g. a smooth surface with notch free flange fusion), thus producing a quality welded seam.
Discoloration resulting from different levels of residual oxygen in the welding atmosphere
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| W.S Drag shield |
Alu Profi System |
W.S Flexible Gas Profile |
W.S Argon Chambers |
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| Manufactured to suit your components with silicon lips on either side and a
sintered metal gas diffuser. |
A range specially designed for pipe flange seams covering pipe internal diameters 16mm to 270mm. |
Can be used in any position, flat, or on any internal or external diameters with a minimum radius of 700mm. |
Weld critical components in a totally inert atmosphere, chambers can be either a steel construction or a clear polycarbonate dome. |
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