Achtung:

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Lattice structure tensile specimen manufactured with laser melting (LM) process out of the material H13. Show image information
Partner of the DMRC Show image information
Partner 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.

Partner of the DMRC

Partner 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

KOBFS - Lufo

Objectives

The reduction of process times in additive manufacturing is a major focus of research. The aim of the investigation was to reduce the time, required for a process route, of the additive manufacturing process for the Ti6Al4V titanium alloy with subsequent HIP process.

 

Figure 1 Gimbal built with HighSpeed Parameter

Procedure

Therefore, this study pursues comprehensive investigations on the mechanical properties of the titanium alloy TiAl6V4, which was processed in an optimized process chain. By optimizing the process parameters, the production speed is drastically increased, the process-induced defects are adjusted in a controlled manner and eliminated by thermal post-treatment (HIP). The result is a faster processability of the titanium alloy and thus better economic efficiency. A HighSpeed parameter window was determined during singletrack tests. Subsequently, mechanical characteristic values of the specimens are determined in tensile tests and fatigue tests. Both static and dynamic measurement results are very sufficient in comparison to the conventional route.

Achievements

The exposure time during the additive manufacturing process was reduced to 50%. The subsequent HIP treatment also reduces pores up to approx. 6%. Compared to samples that were not generated with high-speed parameters, the mechanical characteristics are identical. In addition, the HighSpeed parameter does not generate any increased residual stresses in the component. This leads to a process time reduction of around 25%. These were validated with a gimbal specimen whose process time could be reduced from 49 hours to 38 hours.

Figure 2 Inner surfaces of HighSpeed build job
Contact

Prof. Dr. Thomas Tröster

Institut für Leichtbau mit Hybridsystemen (ILH)

Vorstandsvorsitzender

Thomas Tröster
Phone:
+49 5251 60-5331
Fax:
+49 5251 60-5333
Office:
Y2.116

Dominik Ahlers

Leichtbau im Automobil

Team leader Additive Manufacturing

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

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