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Lattice structure tensile specimen manufactured with laser melting (LM) process out of the material H13. Show image information
Industry partners of the DMRC Show image information
Industry partners of the DMRC Show image information
Quality control during a Laser Sinter (LS) build job by a researcher of the DMRC Show image information
Fused Deposition Modeling (FDM) process during the manufacture of an Ultem 9085 part Show image information
Additive manufactured reaction wheel bracket for telecomunication satellites Show image information
Employees of the DMRC working with the "freeformer" from Arburg Show image information
Tactile measurement of a SLM part with a Coordinatemeasuring machine (CMM) Show image information
Powder particles are used as raw material for laser-based additive manufacturing Show image information

Lattice structure tensile specimen manufactured with laser melting (LM) process out of the material H13.

Industry partners of the DMRC

Industry partners of the DMRC

Quality control during a Laser Sinter (LS) build job by a researcher of the DMRC

Fused Deposition Modeling (FDM) process during the manufacture of an Ultem 9085 part

Additive manufactured reaction wheel bracket for telecomunication satellites

Employees of the DMRC working with the "freeformer" from Arburg

Tactile measurement of a SLM part with a Coordinatemeasuring machine (CMM)

Powder particles are used as raw material for laser-based additive manufacturing

Bipolarplates using FDM-Mold

Objectives
The aim was to investigate, if the FDM process is suitable for the production of tool inserts (negative molds), which enables the production of finely textured metallic bipolar plates (BPP) to realize the efficient production of fuel cells.

FDM forming tool with formed sheets

Procedure
The first part of the project was to define and design the finely structured hydrogen channel, taking the requirements of the subsequent production steps into account. There, the limitations of the FDM-Process in this area of application and the resulting mechanical properties and geometrical characteristics has to be investigated.

Achievements
Finely textured mold with good surface quality and sufficient mechanical properties for a small series production of metallic bipolarplates. Identification of suitable materials for this application using the FDM-Process and investigations on orientation angles for optimal canal depths and shapes.

Highlights:

  • Performance: up to 62% higher
  • Speed: 5 times faster
  • Space: up to 50% thinner
Components and structure of a fuel cell with formed bipolar plates.

This Innovation was developed together with Eisenhuth GmbH & Co. KG. Eisenhuth. Eisenhuth is SME located in Germany, Osterode am Harz, and has three main competencies: Mold making, small and medium series of thermoplast, rubber, silicone and thermoset components and the production of bipolarplates from graphite compound materials. In this place the DMRC want to thank Eisenhuth for the great contribution.

Contact

Dominik Ahlers

DMRC

Metal Laser Melting

Dominik Ahlers
Phone:
+49 5251 60-5422
Office:
W 2.101

Frederick Knoop, M.Sc.

DMRC

Fused Deposition Modeling

Frederick Knoop
Phone:
+49 5251 60-5518
Fax:
+49 5251 60-5409
Office:
W2.102

Funded by

The Deutsche Bundesstiftung Umwelt DBU (German Federal Environmental Foundation)

The University for the Information Society