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Mandal, Saikat
- On Drilling Burr Reduction of Low Carbon Steel Workpiece
Abstract Views :328 |
PDF Views:3
Authors
Kapil Roy
1,
Partha Mukherjee
1,
Ujjwal Kumar Hansda
1,
Sourav Halder
1,
Suman Mandal
1,
Saikat Mandal
1,
Partha Pratim Saha
1,
Santanu Das
1
Affiliations
1 Mechanical Engineering Department, Kalyani Govt. Engineering College, Kalyani-741235, IN
1 Mechanical Engineering Department, Kalyani Govt. Engineering College, Kalyani-741235, IN
Source
Indian Science Cruiser, Vol 28, No 4 (2014), Pagination: 19-24Abstract
Burr is a undesirable projected material adhered to an edge of a job. After drilling operation, exit burr which is usually produced beyond the rear surface of the workpiece, causes serious problem in the assembly of finished product and to maintain its quality. So, reduction of burr is essential. A number of experiments have been done in the present work under dry and wet environment to observe its effect on burr formation under different drilling conditions. In this work, an exit edge bevel of 31 degree or a back-up support is provided, and its influence on burr formed under different cutting velocities and feeds has been experimentally studied.Keywords
Drilling, Machining, Burr, Exit-Edge Bevel, Back-Up Support, Dry Machining, Wet Condition.
- Investigation of WEDM Performance for Maintaining Accuracy of Notched Specimen
Abstract Views :136 |
PDF Views:0
Authors
Affiliations
1 Indian Institute of Engineering Science and Technology, Shibpur, IN
1 Indian Institute of Engineering Science and Technology, Shibpur, IN
Source
Journal of the Association of Engineers, India, Vol 90, No 3-4 (2020), Pagination: 7-14Abstract
In this research work, Wire Electric Discharge Machine (WEDM) was used to cut CT specimen notch (60°) on a mild steel sample with varying the WEDM input parameter set to study the accuracy of the notch. For the study, pulse on time (TON), pulse off time (TOFF), peak current (IP), wire tension (WT) and servo feed (SF) was taken as input parameter, and the notch radius was considered as primary output parameter Kerf width was also recorded for the study as another response parameter This work carefully analysed the dependency of the accuracy of notch radius and kerf width with the WEDM input parameter for minimizing the notch radius to maximize the notch accuracy Pulse on time (TON), pulse off time (TOFF), and peak current (IP) plays a significant role for notch accuracy. The kerf width decreases with the increase of wire tension and increases with the increase of pulse on time and peak current. From the study of all the graphical plot, it can be concluded that the parameter set namely TON=20 μs, TOFF=52 μs, IP=90 A, WT=6 kgf, SF=2400 mm/min gives maximum accuracy and TON=20 μs, TOFF=54 μs, IP=90A, WT=8 kgf, SF=2250 mm/min gives minimum kerf width.Keywords
Machining, EDMing, WEDM, Accuracy, Notched Specimen.References
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- Pramanick, A., Kumar, R., Mandal, S., Dey, P.P. and Das, P.K., Modeling and Multi-Objective Optimization of WEDM of Spark Plasma Sintered Boron Carbide Considering Preferences of Users, lOP Conf. Ser. Mater. Sci. Eng., Vol. 377, p.012094, 2018. Available from: http://stacks.i0p.0rg/l757-899X/377/i=1/a=012094?key=crossref.178fea94db1e2ab39e005868cab53347.
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