Development of a fluid line-jet polishing process for rotational axisymmetric surfaces. (January 2021)

• Record Type: Journal Article
• Authors: Wang, C.J.; Cheung, C.F.; Ho, L.T.; Loh, Y.M.
• Is Part Of: Journal of manufacturing processes. Volume 61(2021)
• Page Start: 15
• Page End: 24
• Publication Date: 2021-01
• Subjects: FLJP fluid line jet polishing -- RAS rotational axisymmetric surface -- FJP fluid jet polishing -- MJP multi-jet polishing -- η ratio of the section area of the nozzle between FLJP and FJP -- L length of the line orifice -- D diameter of the FJP orifice -- ρ fluid density -- v fluid velocity -- p fluid pressure -- μ fluid viscosity -- f external forces acted on the fluid -- I turbulence intensity -- u′ root-mean-square of the velocity fluctuations -- U mean flow velocity -- u′x component in x direction of u′ -- u′y component in y direction of u′ -- u′z component in z direction of u′ -- Ux component in x direction of of U -- Uy component in y direction of of U -- Uz component in z direction of of U -- ∇ vector differential operator; Fluid jet polishing -- Abrasive water jet -- Revolving surface -- Roller surface -- Computational fluid dynamics -- Ultra-precision machining; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2020.10.069
• Languages: English
• ISSNs: 1526-6125

Abstract

Highlights: A fluid line-jet polishing (FLJP) process for rotational axisymmetric surfaces was developed. A theoretical and experimental analysis of the material removal rate of the FLJP was undertaken. FLJP shows superior polishing performance on rotational axisymmetric surfaces. FLJP provides a competitive polishing method for complex surfaces. Abstract: In this paper, a fluid line-jet polishing (FLJP) process was developed for the polishing of rotational axisymmetric surface (RAS). FLJP aims to enhance the polishing efficiency of fluid jet polishing without degrading the polished surface integrity, together with better material removal uniformity than linear-array multi-jet polishing (MJP). The fluid field was analyzed by comparing to the normal fluid jet polishing (FJP) based on computational fluid dynamics (CFD) method so as to test the stability of the fluid line-jet. A series of polishing experiments were conducted to analyze the performance of the FLJP and compared to FJP and MJP in terms of material removal characteristics, the effect of the main factors (i.e. fluid pressure, stand-off distance, etc.), material removal uniformity and surface quality after polishing on cylindrical surfaces. The results indicate that FLJP has much higher material removal rate than FJP under the same polishing conditions together with superior surface quality. The material removal after FLJP is much more uniform than MJP, especially at the region along the length direction of the line orifice. Moreover, it is also found that the relationship between the polishing factors and the material removal rate in FLJP is similar to FJP, resulting in good control of material removal.