Direct metal laser sintering for rapid tooling: processing and characterisation of EOS parts

Citation
Mw. Khaing et al., Direct metal laser sintering for rapid tooling: processing and characterisation of EOS parts, J MATER PR, 113(1-3), 2001, pp. 269-272
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
0924-0136 → ACNP
Volume
113
Issue
1-3
Year of publication
2001
Pages
269 - 272
Database
ISI
SICI code
0924-0136(20010615)113:1-3<269:DMLSFR>2.0.ZU;2-J
Abstract
Direct metal laser sintering (DMLS) fabricates metal prototypes and tools d irectly from computer aided design (CAD) data. The process is popular in ra pid tooling (RT),since a suitable metal powder can be used to produce the m etal parts and tools. The powder system may be pre-alloyed powder or multi- phase powder. The properties of the RT parts, however, depend on its compos ition and solidification conditions. Accuracy, wear resistance and mechanic al properties are critical on choosing the rapid tooling mould as the produ ction-grade tooling. This study includes the design of metal prototypes whi ch are then fabricated by EOS's DMLS. The EOS material system is a mixture of nickel, bronze and copper-phosphide material. The dimensional accuracy, surface roughness, impact toughness, hardness, and strength of EOS parts ar e measured. SEM pictures of EOS parts are also thoroughly analysed. (C) 200 1 Elsevier Science B.V. All rights reserved.