Abstract: A method for welding identical or different materials with a tendency for excessive hardening. The method uses a high-energy beam to melt, in a weld seam, copper or an alloy having a high copper content and a basic material or materials such as cast iron, cast steel, malleable iron, sintered material, case-hardened steel, steel with a high C content, annealed steel, high-strength steel, and the like. The use of copper provides a weld with a lower melting point.

Abstract: A shaft (1) with a co-rotating element (2) which is secured to it and has a surface located perpendicular to the axis (3) of the shaft, the welding taking place in the fillet formed between the seating surface (4) of the shaft (1) and axially normal surface (6, 8) of the element. To achieve a durable join without adversely affecting true running, a welding bead (20) starts at a starting point (21) on the surface (6; 8) located perpendicular to the axis (3) of the shaft (1), leads to the fillet and then leads back to an end point (21?) on the surface (6; 8) located transversely with respect to the axis of the shaft.

Abstract: An improved nodular cast iron is intended, despite having a high strength, to be ductile, to have good machining properties and to be weldable. It contains: 4 to 6 percent of silicon and a carbon content which has been reduced by an amount corresponding to the carbon equivalent, at most 0.03 percent of phosphorus and 0.2 to 0.5 percent of nickel. A casing (1) made from the nodular cast iron is welded to a toothed part (2) made from alloyed and/or case-hardened steel.

Abstract: A shaft (1) with a co-rotating element (2) which is secured to it and has a surface located perpendicular to the axis (3) of the shaft, the welding taking place in the fillet formed between the seating surface (4) of the shaft (1) and axially normal surface (6, 8) of the element. To achieve a durable join without adversely affecting true running, a welding bead (20) starts at a starting point (21) on the surface (6; 8) located perpendicular to the axis (3) of the shaft (1), leads to the fillet and then leads back to an end point (21′) on the surface (6; 8) located transversely with respect to the axis of the shaft.

Abstract: A method for joining a first part to a second part wherein the first part comprises machine cast iron and the second part comprises case-hardened steel comprises abrading a surface on each of the parts which are to be welded together with a groove, fitting the abraded surfaces together to form a welding groove and high-energy beam welding within austenitic welding wire for joining the parts together.