IMPROVED METHOD OF FORMING A SOCKET WELD

摘要

An improved method of forming a socket weld connection between a tubular element (10) and a vessel (20), of the type wherein a recess (30) having a diameter slightly greater than the diameter of the tubular element (10) is bored into the surface of the vessel (20), the tubular element (10) is inserted into the recess (30) so as to contact the seat (40) thereof and welding heat is applied externally around the circumference of the tubular element (10) at the intersection of the tubular element (10) with the surface of the vessel (20). The improvement comprises tapering the seat (40) of the recess (10) from its outer circumference inward at a downward angle with respect to the horizontal of at least 10` and not more than 15o so as to provide rim contact at the seat to allow free deformation of the tubular element and avoid stress development in the weld upon contraction thereof.