Welding double bevel

With extrusion welding, the support is prepared (beveled or preferably double beveled) and preheated using a hot air gun to reach a surface temperature of 250°C-260°C. The molten extrusion (maximum length— 20 cm) is pressed into the bevel using stainless steel or PTFE coated tools. 

It both plates are beveled 3i0r is sufficient If one plate only is beveled 55 beveling should be used. Up to 1/4" plates no bevel is required for ordinary weld—up to 3/4 plates single bevel is sufficient—heavier plates require double bevel or single U weld if one side only is accessible for welding and double U welds if both sides are accessible. U" grooves can be made only by machining. 

Butt Welds, too percent penetration is undeistooo-no size o bead specification is required-specity single oi double butt weld Gnno. ifusn and bevel as required. 

In rod welding, the parts to be welded are profiled (beveled or double beveled). After deflashing and cleaning, they are clamped in place. During the rod welding operation, the parts must be preheated at the same time as the rod is melted by continually moving... 

Welding is carried out in successive passes in order to completely fill the bevel. In order to equalize as much as possible the stress which will occur during cooling, it is recommended whenever possible to weld in a double bevel, ensuring that the rod is added alternatively on each of the two sides of the bevel until the gap is completely filled. 

Double bevel with wide root faces welded from both sides... 

I Welds II beveled no specification of si e ol weld required II not beveled give size of fillet-specify single or double fillet—continuous, rnterrmtlent or aggered-size of bevel and grind as required. 

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