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Characterization of finished surface through thermal additive centrifugal abrasive flow machining for better surface integrity

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Title Statement Characterization of finished surface through thermal additive centrifugal abrasive flow machining for better surface integrity
 
Added Entry - Uncontrolled Name Walia, R S; Department of Production and Industrial Engineering, Punjab Engineering College, Chandigarh 160 012, India
Ali, Parvesh ; Mechanical Department, Delhi Technological University, Delhi 110 042, India
Murtaza, Qasim ; Mechanical Department, Delhi Technological University, Delhi 110 042, India
Singar, Ranganath Muttanna; Mechanical Department, Delhi Technological University, Delhi 110 042, India
 
Uncontrolled Index Term Abrasive Flow Machining (AFM), Abrasives, Finishing, Hardness, Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Machining, Spark
 
Summary, etc. Abrasive Flow Machining (AFM) process has been a useful technique for deburring and polishing of the surface and edges through the abrasive laden media. The surface material has been removed in form of micro chips due to abrasion action of sharp cutting edges abrasive particles. A large amount of force and energy has been lost due to frictional forces between the surface and abrasive particles in AFM process. A new hybrid form of AFM process named as thermal additive centrifugal abrasive flow machining (TACAFM) has been discussed in the present investigation, which utilized the spark energy to melt the surface material. A lesser amount of force has been required by the abrasive particles to remove the molten material from the surface and also minimized the energy loss. In the present investigation central composite design response surface methodology has been used to plan and conduct the experiments using Design Expert® 11 software. Experiments have been performed to analyze the effect of input process variables such as current intensity, duty cycle, abrasive concentration, rotational speed of the electrode and extrusion pressure on scatter of surface roughness, micro hardness and % improvement in R<sub>a</sub> of the workpiece. Also the finished surface of the brass work piece has been characterized for the microstructure study using SEM and XRD analysis. From the experimental results it has been found that duty cycle has the most significant effect towards Scatter of surface roughness with a contribution of 17.5 % while current has been contributed largest as 85.17 % towards micro hardness. Also it has been observed that current has contributed largest as 21.88% against the % improvement in Ra. The optimum scatter of surface roughness, micro hardness and % improvement in R<sub>a</sub> has been observed as 0.15 µm, 345.95 HV and 39.52 % respectively.
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2022-05-11 17:13:21
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJEMS/article/view/63175
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 29, ##issue.no## 1 (2022): IJEMS-FEBRUARY 2022
 
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