SME KC CAM2- Productivity improvement and validation of point melting process

Important results from the project

The project was conducted as SME-support within the frames of the Competence center CAM2. The project essentially met its objective. We developed a robust set of static material data that fully meets ASTM requirements and validated the manufacturing process for industrial use. The geometric accuracy was characterized according to ISO/ASTM 52902 and a scaling profile was developed. We also showed that a gas-tight spot-melted shell in combination with HIP works, and that plate-free, stacked builds perform equivalently to full builds, which opens up higher productivity.

Expected long term effects

In the long term, the results could broaden the use of spot melting from a niche solution to an industrial production alternative, even in regulated industries such as medical technology and aerospace. The combined core/shell process with HIP and the ability to stack plateless builds can increase productivity and lower the cost per part. The standard-based scaling profile provides higher dimensional accuracy from the start, which strengthens the competitiveness of Swedish additive manufacturing.

Approach and implementation

The project was carried out in 4 work packages: administration, core/shell with HIP, mechanical validation and geometric validation. The work was carried out on AIM Swedens Spectra L-system and Q20plus through systematic test builds, external material testing and dimensional control against standards. The work largely followed the plan. However, the end date was delayed by 6 months, partly due to a late machine installation, and partly a later project start for administrative reasons within CAM2