Method for MIG/MAG electric arc welding to join two or more components made of light metals or alloys

Between states B and A, the welding current source is always switched to a further state C with a welding current IC whose intensity is lower than the pulse current IB of the state B but higher than the basic welding current IA of the state A.

Method for fitting connector to join car bodywork components, one of which has tensile strength above 800 N/sq mm, comprises driving it in using piston, to which impulses with speed above 10 m/s are applied, so that components are deformed

Method for fitting a connector (7) with a threaded section to join two car bodywork components (8, 9), one of which has a tensile strength above 800 N/mm2>, comprises driving it in using a piston. Impulses with a speed above 10 m/s are applied to the piston so that the components are deformed and a secure joint is produced.

Verfahren zum fügen von zwei zumindest abschnittsweise übereinander angeordneten bauteilen, insbesondere karosseriebauteilen