ES392005A1 - Perfected friction welding procedure. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved procedure of friction welding, of the type used for joining two thermoplastic parts respectively provided with circular areas of mutual relationship, which are joined by the fusion that provides a temperature rise in their walls in contact, through the friction determined for the rotational mobility of one of them; characterized in that being the two circular zones to be welded of different diameters, one of them produces an inner chamber, based on a conformation annularly reduced in its wall, which ends at the end of the piece, while in the other considered piece, initially a circular section is disposed, lowered, which at its lower end has a groove of inclined section, with which coupling the two parts together, the origin of the aforementioned merger, part of the material in pasty state is mobilized and it tends to lodge in the adjoining cavities mentioned, which causes, with the cooling their mutual relation, and another part of the mentioned material in movement, moves between both pieces, internally, being definitively established on the upper edge of the lower one, without flow at no time to the exterior nor, consequently, to form the outgoing cord or burrs that traditionally originate in the conventional procedure. Welding onal. (Machine-translation by Google Translate, not legally binding)