Plasma welding of ends of sheets of same or different thickness involves controlling plasma welding method so plastic deformations caused by thermal stresses are limited to defined extent

摘要

The method involves welding together at least one inner (4) and at least one outer (2) sheet of a door or flap and controlling the plasma welding method so that plastic deformations caused by the resulting thermal stresses are limited to a defined extent and within the tolerance limits permissible for the doors and flaps, especially a gap size tolerance of 0.1 mm. Independent claims are also included for the following: a device for plasma welding of ends of sheets of same or different thickness, especially zinc-coated sheet or aluminum sheet.