کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
805178 905117 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental characterization of hydrodynamic nanopolishing of flat steel plates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Experimental characterization of hydrodynamic nanopolishing of flat steel plates
چکیده انگلیسی

Nanoscale polishing finds applications in medical, industrial, telecommunication, optics, electronic and military fields. Typically, rigid tool-based methods such as diamond turning, grinding and honing are employed for nanoscale polishing. These methods have inherent limitations in creating nanopolished surfaces on hard and profiled surfaces. To address the issue, this work is focused on experimental investigation of hydrodynamic polishing (HDP) as a nanopolishing method. The soft rubber tool and the workpiece are submerged in a slurry during hydrodynamic nanopolishing. An elastohydrodynamic film is formed between the tool and the workpiece due to the tool rotation which is responsible for nanopolishing. A HDP experimental setup was fabricated and experiments were conducted on oil hardened and non-shrinking steel (OHNS, 58-62 HRC) with colloidal alumina suspensions of different particle sizes. The experiments were designed using Taguchi techniques to study the effect of four main factors (contact load, tool stiffness, spindle speed and abrasive particle size) and three important two-factor interactions at four different polishing times. Statistical analysis of the results shows that concentration of abrasive in the slurry is a significant factor in the hydrodynamic polishing. The best surface finish of 3.5 nm was obtained using 1 μm abrasive particle size colloidal suspension at 7.5 N load, 2400 rpm spindle speed, 90 shore A tool stiffness and 3 min of polishing time. The change in surface morphology and topography due to polishing also confirm the efficacy of the HDP process.


► HDP can create nanofinished surfaces on OHNS steel and the best Ra value was 3.5 nm.
► Abrasive size was found to be the most important factor.
► Higher load resulted in higher surface roughness.
► 0.3 μm abrasive slurry yielded best surface finish at lower polishing times.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 36, Issue 3, July 2012, Pages 424–434
نویسندگان
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