FRICTION-WELDED ELECTRICAL GROUND AND METHODS OF MAKING GROUND Russian patent published in 2018 - IPC H01R4/02 B23K20/12 

FIELD: electricity.

SUBSTANCE: friction-welded ground assembly includes an alloy substrate with a clearance hole; an aluminium alloy weld nut having a bolt bore and an outer wall; and a grounding bolt. Bore is located substantially within the clearance hole and a portion of the outer wall is joined to the substrate at a friction-welded attachment. Bolt is threaded within the bore. Method for making a ground includes the steps: rotating an aluminium alloy weld nut having an outer wall at a predetermined speed; lowering the outer wall of the rotating nut into contact with an aluminium alloy substrate to generate a frictional force for a friction time; arresting the rotation of the nut; and applying an axial forging force to the outer wall and the substrate for a forging time.

EFFECT: invention relates to friction-welded assemblies, in particular friction-welded rotational joints for motor vehicle applications.

16 cl, 10 dwg