Patent ID: 8595914

Claim:
A method for the leakproof unreleasable fastening of at least one component ( 1 ) to a basic component ( 3 ) with the aid of a bolt ( 7 ) projecting through a bore ( 5 ) in the component(s) ( 1 ), the bolt ( 7 ) having an end face ( 9 ) opposite a head ( 15 ), the bolt having a shank narrower in diameter than the diameter of the bore ( 5 ), the method comprising: inserting the end face ( 9 ) of the bolt ( 7 ) through the bore ( 5 ) to contact the surface ( 10 ) of the basic component ( 3 ), leaving a gap between the shank and the bore ( 3 ), electrically welding the bolt ( 7 ) at the one end face ( 9 ) to the surface ( 10 ) of the basic component ( 3 ) with formation of a weld bead, and after the end face has been welded on, deforming the bolt plastically, wherein the shank ( 13 ) of the bolt ( 7 ) is compressed until the shank completely fills the bore in regions in the circumferential direction and the underside ( 17 ) of the head ( 15 ) lies in regions on the surface ( 11 ) of the component ( 1 ), forming a leaktight fastening, wherein the component ( 1 ) located next to the basic component ( 3 ) has, in the surface ( 21 ) facing the basic component ( 3 ), a recess ( 23 ) in the vicinity of the bore ( 5 ) for receiving the weld bead and spatter produced during electrical welding.