Novel Processing Technology for Medium Series Manufacture of Full Density PM Materials and Components

Purpose and goal

The project has addressed a new processing route for realising fully dense powder metallurgical steel. This route involves the 3D-printing of moulds for cold isostatic pressing (CIP), the CIP compaction of steel powder to high relative density, the subsequent sintering to closed porosity and the final densification by hot isostatic pressing to full density. The project has demonstrated that this chain is possible to reach the intended goal and several of technical merits have been identified.

Expected results and effects

Answers to questions about CIP-mould material, CIP densification capacity and its demonstration have been deriverad. Answers to questions about sintring and HIP with potential to reach full density have been given. Targets in terms of potential application areas have been identified and needs for further technical development have been outlined. The fulfilment of goals in technical terms and future potential has mean that there are clear possibilities for initiatives regarding further development.

Planned approach and implementation

The project has been based on the co-operation between Chalmers, Swerea KIMAB, Höganäs, Quintus Technologies and Bofors Bruk. This constellation has been able to adress all technical challenges within the project for the different processing stages considered, evaluation and characterisation. The project involves technology within Sweden and necessary combination of competences for further development of the technique for fully dense PM steels. This includes the whole chain from powder to final product, to create new ways for product design and to support with modelling.