Feasibility investigation of direct laser cutting process of metal foam with high pore density

Yangxu Liu, Wei Zhou, Xuyang Chu, Shaoyu Liu, Kwan San Hui

Research output: Contribution to journalArticle

10 Citations (Scopus)
10 Downloads (Pure)

Abstract

To avoid damage to the pore structure of metal foam, a laser cutting process for efficiently and directly cutting metal foam into regular shapes is proposed. After analyzing the proposed laser cutting process, its effects when applied to three different types of metal material (copper, ferroalloy, and nickel) and two levels of pore density, namely 90 and 110 pores per inch (PPI), were investigated. The results show that metal foam with a good surface quality can be obtained without damaging the pore structure by using the proposed laser cutting process. Of the three metal types considered, the highest material removal rate (MRR) and material oxidation rate (MOR) were observed for ferroalloy foam. Of the two pore densities, metal foam of 90 PPI showed a larger material removal rate than metal foam of 110 PPI. The MRR and MOR increased with an increase in the laser output power and decrease in the scanning speed. Using a central composite experimental design method, optimized processing parameters of 26 W laser output power and 475 mm/s scanning speed were adopted to cut the metal foam with a high pore density.

Original languageEnglish
Pages (from-to)2803–2814
JournalInternational Journal of Advanced Manufacturing Technology
Volume96
Issue number5-8
Early online date24 Feb 2018
DOIs
Publication statusPublished - May 2018

Keywords

  • Laser cutting
  • Material oxidation rate
  • Material removal rate
  • Metal foam

Cite this