High speed finishing of a CuZn15 brass alloy by Abrasive Recirculating Fluidized Bed (ARFB)

The present investigation deals with the high-speed finishing of a brass alloy by Abrasive Recirculating Fluidized Bed (ARFB). The influence on the machining effectiveness of several process parameters, namely, abrasive type and size, processing time, impact speed was first experimented. The evolution of the surface morphology during the finishing process and the mechanisms involved were then looked into. Finally, the uniformity and the dimensional accuracy of the machined surface were accounted for. The experimental findings show the ARFB prone to reduce the surface roughness of the workpieces, thus modifying their texture and bringing them to a high quality standard. In addition, the dimensional accuracy of the process warrants the applicability of the technology even when the respect of the closest geometrical tolerances is required.

[1]  J. Bodoia,et al.  Parameters Affecting the Velocity of Particles in an Abrasive Jet , 1977 .

[2]  B. Lawn,et al.  A model for the wear of brittle solids under fixed abrasive conditions , 1975 .

[3]  Piotr Stępień,et al.  Grinding forces in regular surface texture generation , 2007 .

[4]  G. K. Lal,et al.  A Theoretical Study of Erosion Phenomenon in Abrasive Jet Machining , 1996 .

[5]  G. Milad,et al.  Getting the lead out of surface finishing , 2006 .

[6]  Massimiliano Barletta,et al.  A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys , 2006 .

[7]  T. N. Goh,et al.  An empirical study of parameters in abrasive jet machining , 1989 .

[8]  K. Gahr.  Wear by hard particles , 1998 .

[9]  Shih-Hsiang Chang.  A dishing model for chemical mechanical polishing of metal interconnect structures , 2005 .

[10]  P. M. Winter.  Brass polishing: Compound ingredients effects and proposed mechanism , 1986 .

[11]  Akihiro Yabuki,et al.  Critical impact velocity in the solid particles impact erosion of metallic materials , 1999 .

[12]  I. Finnie.  Erosion of surfaces by solid particles , 1960 .

[13]  S.S. Rangwala,et al.  Learning and optimization of machining operations using computing abilities of neural networks , 1989, IEEE Trans. Syst. Man Cybern..

[14]  J. Bitter.  A study of erosion phenomena part I , 1963 .

[15]  A. Yabuki,et al.  Theoretical equation of the critical impact velocity in solid particles impact erosion , 1998 .

[16]  Massimiliano Barletta,et al.  Fluidized bed assisted abrasive jet machining (FB-AJM): Precision internal finishing of Inconel 718 components , 2007 .

[17]  V. Jain,et al.  Experimental investigations into abrasive flow machining (AFM) , 2000 .

[18]  Anthony G. Evans,et al.  Particle size distribution effects on the solid particle erosion of brittle materials , 1981 .

[19]  Massimiliano Barletta,et al.  Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes , 2007 .

[20]  D. Zeidler,et al.  The interaction between different barrier metals and the copper surface during the chemical-mechanical polishing , 1997 .

[21]  T. Akiyama,et al.  Investigation of wall shear stress in vibrating particle beds , 1991 .

[22]  P. Stecconi.  Solid particles distribution in a fluidized bed with unreacted core reaction and superficial abrasion , 1982 .

[23]  M. Barletta,et al.  Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings , 2008, International Thermal Spray Conference.

[24]  George Chryssolouris,et al.  A Comparison of Statistical and AI Approaches to the Selection of Process Parameters in Intelligent Machining , 1990 .

[25]  F. C. Tsai,et al.  A Taguchi and experimental investigation into the optimal processing conditions for the abrasive jet polishing of SKD61 mold steel , 2008 .

[26]  G. K. Lal,et al.  An experimental study of abrasive jet machining , 1984 .

[27]  T. Akiyama,et al.  Solids mixing in vibrating particle beds: Effect of a tube submerged in the bed , 1994 .

[28]  Massimiliano Barletta,et al.  Progress in abrasive fluidized bed machining , 2009 .

[29]  Keping Han,et al.  Studies on chemical polishing of brass , 1996 .

[30]  M. Barletta,et al.  Al2O3 thin coating of AA 6082 T6 components by using a fast regime fluidized bed , 2005 .

[31]  John R. Grace,et al.  Tube wear in gas fluidized beds—II. Low velocity impact erosion and semi-empirical model for bubbling and slugging fluidized beds , 1991 .

[32]  H. Hamdi,et al.  Effect of the belt grinding on the surface texture: Modeling of the contact and abrasive wear , 2005 .

[33]  Tagliaferri,et al.  Fluidized bed degreasing (fbd) of metal components , 2006 .

[34]  G. P. Tilly,et al.  A two stage mechanism of ductile erosion , 1973 .

[35]  M. Barletta,et al.  Fast Regime-Fluidized Bed Machining (FR-FBM) of Atmospheric Plasma Spraying (APS) TiO2 coatings , 2008 .