This MIM variable nozzle vane is produced in very high volumes for automotive diesel turbochargers. The part meets strict dimensional tolerance requirements, as close as ±0.015mm on the wing profile, which was achieved with machining.
It is produced using a special tool that has a unique sliding function when opening, reducing deformation during ejection. MIM production offered a 20% cost saving.
The production of MIM superalloy components is now far advanced, with an ever increasing market share. Materials such as Inconel 713 are readily available as MIM feedstocks.
MIM processing, thanks to the finely dispersed powders used, delivers parts with a very homogeneous microstructure, which improves significantly on the microstructure of an investment cast product.