Aerosint researches zero-waste SLS printing using PEEK

19 March 2021
Case

SLS with PEEK

Aerosint decided to address the issue of selective laser sintering (SLS) with PEEK (polyether ether ketone), one of the highest-performing plastics worldwide, with an aim of achieving zero-waste printing. Using PEEK on an SLS machine is currently very expensive and most of the PEEK powder used for support – approximately 75% of the powder used for each volume – cannot be recycled.

 

The Aerosint system would replace the support powder with a different one. This project will require effort because the SLS procedure is not self-evident. For example, the recoating system must be able to resist several hours in a hot oven set to 350 °C.

Numeric tool

Sirris is experienced with the SLS procedure, which was used to assist Aerosint with the development project. Experiments were required to validate the results for the development of a numeric model. Sirris assisted Aerosint by setting the main limits related to the SLS procedure, especially in terms of the high temperatures involved. Sirris developed a testbed to quantify the main parameters for the recoating system.

 

This project developed a numeric tool to contribute to the design of the recoating system for the PEEK-SLS procedure.

 

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