A novel multi-jet polishing process and tool for high-efficiency polishing

Chunjin Wang (Corresponding Author), Chi Fai Cheung, Lai Ting Ho (Corresponding Author), Mingyu Liu, Wing Bun Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

100 Citations (Scopus)


This paper presents a novel multi-jet polishing (MJP) process and tools based on FJP which can implement high-efficiency polishing on large-scale surfaces or lens array surfaces. The MJP makes use of a purposely designed nozzle which possesses many regularly distributed holes, whose number can be a few to several hundred. Moreover, each hole can spray out a high-energy fluid jet leading to a dramatic increase of material removal. Its feasibility is firstly analyzed through a Computational Fluid Dynamics (CFD) simulation. Hence, its surface generation mechanisms in the integrated polishing mode and discrete polishing mode are studied. After that, a series of polishing experiments on different materials are conducted to validate its polishing performance as compared to single jet polishing (SJP). The experimental results show that the MJP tool can realize a much higher material removal rate, together with compatible surface roughness to SJP. Hence, the MJP tool has the potential to implement high-efficiency polishing on medium-large size surfaces and lens array surfaces.
Original languageEnglish
Pages (from-to)60-73
Number of pages14
JournalInternational Journal of Machine Tools and Manufacture
Publication statusPublished - 1 Apr 2017


  • Computational fluid dynamics
  • Lens array
  • Multi-jet polishing
  • Surface generation
  • Ultra-precision machining

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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