Experimental investigations into magnetic abrasive flow finishing process on aluminium 6061-T6

2020 ◽  
Vol 10 (3) ◽  
pp. 212
Author(s):  
Pawan Yadav ◽  
S.C. Jayswal
Keyword(s):  
Experimental Investigations ◽  
Finishing Process ◽  
Abrasive Flow Finishing

A critical review of past research and advances in abrasive flow finishing process

2018 ◽  
Vol 97 (1-4) ◽  
pp. 741-782 ◽  
Author(s):  
Anand C Petare ◽  
Neelesh Kumar Jain
Keyword(s):  
Critical Review ◽  
Past Research ◽  
Finishing Process ◽  
Abrasive Flow Finishing

Experimental investigations and modeling of drill bit-guided abrasive flow finishing (DBG-AFF) process

2008 ◽  
Vol 42 (7-8) ◽  
pp. 678-688 ◽  
Author(s):  
Mamilla Ravi Sankar ◽  
S. Mondal ◽  
J. Ramkumar ◽  
V. K. Jain
Keyword(s):  
Experimental Investigations ◽  
Drill Bit ◽  
Abrasive Flow Finishing

Experimental investigations into ultrasonic-assisted double-disk magnetic abrasive finishing of two paramagnetic materials

2015 ◽  
Vol 231 (6) ◽  
pp. 1021-1038 ◽  
Author(s):  
Prateek Kala ◽  
Pulak M Pandey
Keyword(s):  
Mechanical Properties ◽  
Process Parameters ◽  
Experimental Investigations ◽  
Magnetic Abrasive Finishing ◽  
Force Microscopy ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Ultrasonic Assisted ◽  
Paramagnetic Materials ◽  
Pulse On Time

This article evaluates the finishing performance of ultrasonic-assisted double-disk magnetic abrasive finishing process on two paramagnetic materials (copper alloy and stainless steel) with different mechanical properties such as flow stress, hardness, shear modulus, and so on. The finishing experiments were performed based on response surface methodology. The results obtained after finishing have been analyzed to determine the effect of different process parameters such as working gap, rotational speed, and pulse-on time of ultrasonic vibration for both work materials and to study various interaction effects that may significantly affect the finishing performance by the process. The outcome of analysis for the two different work materials has been critically compared to understand the effect of the considered process parameters on the finishing performance of the process based on mechanical properties of the workpiece such as hardness. Furthermore, the scanning electron microscopy and atomic force microscopy were carried on the workpiece surface to understand the possible mechanism of material removal and the surface morphology produced after the finishing process.

Development of polymer abrasive medium for nanofinishing of microholes on surgical stainless steel using abrasive flow finishing process

2019 ◽  
Vol 234 (3) ◽  
pp. 355-370 ◽  
Author(s):  
Sachin Singh ◽  
M Ravi Sankar
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
High Surface ◽  
Machining Process ◽  
Abrasive Medium ◽  
Finishing Process ◽  
Drug Eluting ◽  
Finishing Processes ◽  
Abrasive Flow Finishing

The finishing operation completes the manufacturing cycle of a component. Depending on the level of finish (micro and nano) required on the component surface, different finishing processes are employed. Several components employed in medical, automotive and chemical industries use different types of passages for the flow of fluid. The surface roughness of such passages decides the functionality of the component. Drug-eluting stents are one of the recent advancements in the medical industry. They possess microholes for release of the drugs to the point of cure. Microholes are mostly fabricated by thermal-based micromachining processes that generate metallurgically destroyed surface layers with high surface roughness. Later, these are polished using chemical or electrochemical polishing techniques, which chemically destroy the quality of the surface. These metallurgically and chemically modified (destroyed/changed) rough surfaces on the microhole wall can cause contamination of the drug. So in this article, microholes of diameter 850 ± 30 µm are fabricated in surgical stainless steel (SS 316L) workpieces using the electric discharge micromachining process. Machined microholes are finished by employing a non-traditional finishing process called the abrasive flow finishing process. Instead of using a commercially available expensive abrasive flow finishing medium, the economic medium is fabricated in-house, and its rheological study is carried out. Machining process produces microholes with a surface roughness of about 1.40 ± 0.10 µm. Later, by finishing of microholes with the abrasive flow finishing process, the surface roughness is reduced to 150 nm (percentage surface roughness improvement of about 88.53%). Therefore, the abrasive flow finishing process is a viable alternative to chemical-based polishing processes as it removes the recast layer and achieves nanosurface roughness.

Development and Rheological Characterisation of Abrasive Flow Finishing Medium for Finishing Macro to Micro Features

2020 ◽  
Vol 70 (2) ◽  
pp. 190-196
Author(s):  
Sachin Singh ◽  
M. Ravi Sankar
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Recast Layer ◽  
Technological Advancement ◽  
Minimal Cost ◽  
Finishing Process ◽  
Fine Surface ◽  
Micro Features ◽  
Finishing Processes ◽  
Abrasive Flow Finishing

Technological advancement demands the manufacturing of components with a fine surface finish at a minimal cost. This scenario acts as the driving force for the research communities to develop economic finishing processes. Abrasive flow finishing (AFF) is one of the advanced finishing processes employed for finishing, deburring, radiusing and recast layer removal from the workpiece surfaces. AFF process uses a finishing medium that acts as a deformable tool during the finishing process. It is the rheological properties of the medium that profoundly influences the end surface finish obtained on the workpiece after the AFF process. In the current work, an attempt is made to develop an economic AFF medium by using viscoelastic polymers i.e., soft styrene and soft silicone polymer. Detailed static and dynamic characterisation of the medium is carried out. Later, to study the finishing performance of the developed medium, AFF experiments are performed for the finishing of macro and micro feature components. The experimental study showed that the nano surface finish could be achieved by varying the viscosity of the developed medium. Developed medium achieved 89.06 per cent improvement in surface roughness during finishing of tubes (macro feature component), while 92.13 per cent and 88.11 per cent surface roughness improvement is achieved during finishing of microslots and microholes (micro feature component), respectively.

scholarly journals Experimental Investigations of Bulge Formation for Burnishing on Plain Surfaces

2018 ◽  
Vol 918 ◽  
pp. 117-122 ◽  
Author(s):  
Matthias Putz ◽  
Martin Dix ◽  
Rico Stöckmann
Keyword(s):  
Experimental Investigations ◽  
Limiting Factor ◽  
Efficient Process ◽  
Highly Efficient ◽  
Finishing Process ◽  
Process Chains ◽  
Cutting Processes ◽  
Bulge Formation

Burnishing as a forming finishing process enables the production of precise and mechanical compressed surfaces. The forming operation can be easily integrated into cutting processes due to its kinematic similarities. Through this integration it was possible to create highly efficient process chains for the machining of rotational symmetrical parts. The formed surface qualities are also interesting for prismatic geometries, but the adaptation of this force controlled process is challenging, because of its multiaxial characteristics. A main limiting factor for burnishing on plain surfaces is the formation of a burnishing bulge on the edges of the burnished area. Several investigations of the process on plain surfaces where done to analyse the bulge formation characteristics of the aluminium EN AW-2007 material. Experiments of different single burnished paths and burnished areas with the subsequent 3D capturing of the created surfaces were done. The investigations show, that the deformation is highly dependent on the applied burnishing force and the burnishing feed. The length and width of the burnished area does not have an influence on the bulge formation.

Sign in / Sign up

Export Citation Format

Share Document