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The innovative C2 system allows the fully automatic chemical surface smoothing

The innovative C2 system allows the fully automatic chemical surface smoothing



Setting new standards for post processing

01 November 2021

The increasing utilisation of additive manufacturing for volume production of standard components goes hand-in-hand with increasing demands for quality, consistency and cost efficiency of the post processing and surface refinement operations for 3D printed components.

For this purpose AM Solutions – 3D post processing technology, the division of Rösler Oberflächentechnik GmbH that specialises in automated post processing and surface finishing solutions, is presenting various innovative developments at this year’s formnext in Frankfurt, Germany. According to the company, the new systems were specifically developed for volume production of 3D printed components made from metal and plastic.

 

SMOOTHING OF METAL

One of these developments is the wet blast machine S1 Wet that was specifically developed for post processing 3D printed components made from metal. Besides the removal of residual powder, the compact plug and play system also allows the surface homogenisation and smoothing. Depending on the surface roughness of the raw components, the S1 Wet can produce low Ra values. To a certain extent, this is even possible on the surface areas of internal passages and / or cavities. The wet process prevents small metal particles removed from the work pieces, dust and shavings from creating a combustible or explosive mixture. Therefore, it does not require the installation of protective Atex accessories. The water layer created on the part’s surface prevents from abrasive media inclusions. As an option, an integrated waste water recycling system consistently removes any contaminants from the slurry consisting of blast media and water limiting the water consumption. The S1 Wet system can be used for a variety of post processing tasks ranging from the manual processing of single components to fully automatic batch operation.

 

EFFICIENT POST PROCESSING

Placing entire batches of plastic components, produced with powder-bed printing systems, into a machine, selecting the respective processing programme, and everything else running fully automatically. With its new Atex compliant S2 shot blast machine, AM Solutions – 3D post processing technology is fulfilling this demand for effective, time- and personnel-saving post processing with repeatable results. After being placed in the machine, the work pieces are gently passing through a special troughed belt in single-piece flow. This allows the complete removal of any residual powder. Depending on the utilised blast media, the work piece surface can also be homogenised or peened. The blast media cleaning and recycling system, integrated into the plug and play system, is a major reason for achieving absolutely clean and repeatable results. It ensures that the blast media remains at a consistently high quality. A patent application covering the machine and the process is pending.

 

ECO-FRIENDLY SURFACE

The design of the C2, presented at formnext as a concept solution, is based on Rösler’s comprehensive knowhow in the fields of equipment building and consumables. The innovative C2 system (pending patent application) allows the fully automatic chemical surface smoothing of 3D printed components made of common polymers and elastomers (including TPU) in series. Thus, the costly single piece handling of the work pieces is completely eliminated for this post processing operation.

Of particular interest is that the non-hazardous processing media, developed by AM Solutions – 3D post processing technology, permits the eco-friendly chemical surface smoothing so that the spent media can be easily disposed of without any environmental restrictions. 




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