3D-Printed Shock Absorber
Demonstrator Made of Three Materials by Three Processes
Covestro AG, Leverkusen, Germany, goes public with an additive-made demonstrator for a shock absorber. The special feature of this shock absorber, in addition to its high functionality, is the production of the individual parts from three different products and with the aid of three different manufacturing processes. The outer spring of the 40 x 7 cm part is made of powdered thermoplastic polyurethane (TPU). It was shaped layer by layer using selective laser sintering and is notable for its elasticity and high abrasion resistance.
The adjusting screw inside the shock absorber has to be very strong and hard. For this reason, it is made of filaments of Covestro's robust polycarbonate material, using the fused filament fabrication (FFF) process. The air chamber in the interior is created from a liquid polyurethane resin. The digital light processing method has proven itself for such components with filigree structures – as in this case as well.
Combination of Tailor-Made Materials
The individual components are subsequently connected to each other. "This complex structure would not have been possible with conventional production processes," explains Lukas Breuers, a marketing manager for 2D and 3D printing at Covestro. "Another new development is the combination of different materials with various, tailor-made properties. This has enabled us to significantly expand the possibilities of additive production and its areas of application.” Other products from the company for additive manufacturing are characterized by good heat resistance, abrasion resistance or flexibility, for example.
Covestro Deutschland AG
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