Exercise_04 AM THGA

Please indicate typical raw materials for the gas atomization process.

• Fe, Cr, Ni

• FeCr 7%C

• Fe2O3, Al2O3

• N

Which process deposits material onto a surface?

• SLS

• SLM

• DED

• EBM

Please explain why a good apparent density and flowrate is necessary for SLM.

• Faster processing

• To fill in cavaties

• Reduced costs

• Less laser power

Why do we need nitrogen during processing? Why it is benefical?

• Cheaper than Ar

• Stable powder bed

• Avoid oxidation

• Nice colors

What is your understanding of "Hybrid-machines" for AM?

• Printing + heat treatment

• Printing + casting

• Printing + forming

• Printing + machining

AM parts exhibits in most cases an increased strength compared to conventional produced material. Why?

• Because of the porosity

• Because of the cracks

• Because of the finer microstructure

• Because of the huge carbides