Method and apparatus for connecting a turbine wheel with an intermediate piece

The invention relates to a method (100) for connecting a turbine wheel (300) with an intermediate piece (302) at a junction, said method (100) includes a step (102) of providing, a step (104) of disposing and a step ( 106) of tempering has. In the step of providing (102) the turbine wheel (300) and the intermediate piece (302) are provided, wherein the turbine wheel (300) consists of a first material and having a first contact surface, and the intermediate piece (302) of a second material and having a second contact surface, being different, the first material and the second material. In the step of placing (104) the intermediate piece (302) in a relative position to the turbine wheel (300), said second contact surface is arranged to face in the region of the junction of the first contact surface. In the step of tempering (106) are heated, the turbine wheel (300) and the intermediate piece (302) to a sintering temperature, wherein the turbine wheel (300) and / or the intermediate piece (302) is sintered to the first contact surface and the second contact surface on connecting the connection point.