Numerical simulation of interaction between metal powder and melting pool during laser rapid forming

Wenpeng Jia, Jing Chen, Xin Lin, Chengwen Zhong, Weidong Huang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

During LRF, the melting pool free surface serves as a moving window of laser power and powder mass input and a dynamic boundary of the LRF continuous growth domain, so the interaction between laser, powder and melting pool free surface is the basic problem that should be coped with in LRF process. The melting pool transient temperature field and gas/powder two phase fluid field numerical model are established. Using finite element birth and death technology, the growth of cladding layers and shape of melting pool free surface are simulated, and using Lagrangian particle tracking model and momentum loss (parallel and perpendicular) option, the interaction between melting pool free surface and powder such as capture and reflect was simulated. At last, the interaction between 316 L stainless steel powder, laser and melting pool free surface was calculated, and the numerical result is in agreement with that of the experiment.

Original languageEnglish
Pages (from-to)546-552
Number of pages7
JournalJinshu Xuebao/Acta Metallurgica Sinica
Volume43
Issue number5
StatePublished - May 2007

Keywords

  • Gas/powder two phase fluid field
  • Interaction
  • Laser rapid forming (LRF)
  • Melting pool

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