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Uma Sekar, V. G.
- Orbital Cold Forming Technology - Combining High Quality Forming with Cost Effectiveness - A Review
Abstract Views :169 |
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Authors
Affiliations
1 Department of Mechanical Engineering, SRM University, Kancheepuram District, Kattankulathur - 603203, Tamil Nadu, IN
1 Department of Mechanical Engineering, SRM University, Kancheepuram District, Kattankulathur - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 38 (2016), Pagination:Abstract
Objectives: This review presents a short communication of cold orbital forging process, its characteristics and compare with classical forging. Methods/Statistical Analysis: Orbital forging have special progressive motion permits the contact space between tool and workpiece to be smaller and thus, lowers forming load and friction. Therefore orbital forming in some cases makes it potential to provide the specified part in exactly one operation, whereas in classical forging quite one operation would be needed. Findings: Cold orbital forming is more useful and preferable in comparison to other manufacturing processes as we can manufacture more number of gears with better surface finish in less time. Thus, cold orbital forming has much higher efficiency. The process is less time consuming and saves labor costs too. Hence, better finished gears can be manufactured in bulk and it also turns out to be more economical than the other manufacturing processes. Current review illuminates the techno economical advantages of the orbital forming process and how advantageous it is over classical forming process. Application/Improvements: This review includes the forming time and distribution of stress and strain on the workpiece and also the die.Keywords
Cold Orbital Forging, Conventional Forging, Forming Time.Full Text
- Frequently used Anisotropic Yield Criteria for Sheet Metal Applications: A Review
Abstract Views :179 |
PDF Views:0
Authors
S. P. Sundar Singh Sivam
1,
V. G. Uma Sekar
1,
K. Saravanan
2,
S. RajendraKumar
1,
P. Karthikeyan
1,
K. Sathiya Moorthy
1
Affiliations
1 Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
2 Department of Mechatronics Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
1 Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
2 Department of Mechatronics Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 47 (2016), Pagination:Abstract
Objectives: To study the yield behavior and plastic flow of an anisotropic sheet metal during forming operations, various mathematical formulations of the plastic state of the sheet metals have been proposed, known as yield functions. Different yield functions pertain to different criteria and have different characteristics. Methods/Statistical Analysis: There are several yield criteria proposed for the study of yield behaviors of sheet metals. This paper aims at reviewing the most frequently and commonly employed for the purpose yield criteria i.e. Hill 1948, Barlat 1989, Hill 1990 and BBC 2000. The study is focused on discussing the form of each criterion, their implementation details and comparing their predictive accuracies. Findings: The methods followed to obtain the yield surface diagram have been reviewed and discussed. Application/Improvement: Inference has been drawn based upon the agreement between theoretical and experimental value for a particular case.Keywords
Accuracy Index, Anisotropic Coefficients, Yield Criteria.Full Text