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N.K. Mehta

Bio: N.K. Mehta is an academic researcher from Indian Institute of Technology Roorkee. The author has contributed to research in topics: Machining & Surface roughness. The author has an hindex of 2, co-authored 2 publications receiving 464 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the effect of cutting parameters (cutting speed, feed rate and depth of cut) on cutting forces and surface roughness in finish hard turning of MDN250 steel (equivalent to 18Ni(250) maraging steel) using coated ceramic tool.

377 citations

Journal ArticleDOI
TL;DR: An extension of Oxley's predictive analytical model for forces, temperatures and stresses at primary (shear zone) and secondary (tool-chip interface zone) deformation zone for Johnson and Cook flow stress model is considered in the present analysis as discussed by the authors.

129 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, a review of green machining including the cutting fluid type as well as the methods to apply the cutting fluids in machining process is made regarding an attempt was made regarding of green manufacturing including cutting fluid types and its machining conditions are critically important in order to maximize the efficiency of cutting fluids.

555 citations

Journal ArticleDOI
TL;DR: In this paper, the minimum quantity cooling lubrication (MQCL) system which combines the advantages of the cryogenic air and MQL, can improve the machinability of Inconel 718.

342 citations

Journal ArticleDOI
TL;DR: In this article, the authors present an effort to review some of these works and to understand the key issues related to process performance, including the type of tool material, cutting edge geometry and cutting parameters.
Abstract: Hard turning is gaining grounds for machining hardened steels as it has several benefits over grinding. There are several issues, which should be understood and dealt with, to achieve successful performance of the process. Researchers have worked upon several aspects related to hard turning. The present work is an effort to review some of these works and to understand the key issues related to process performance. The review shows that the type of tool material, cutting edge geometry and cutting parameters affect the process efficiencies in terms of tool forces, surface integrities integrity, and white layer. Adequate machine rigidity is a must essential to minimize the process inaccuracies. Also moreover, for finish hard turning, where the depth of cut is less than the nose radius of the tool, the forces deviate from the conventional trends as the radial force component is the maximum and axial force component becomes minimum. The present work finally lists down certain areas that can be taken up for further research in hard turning.

234 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of tool geometry on the surface finish obtained in turning of AISI 1040 steel was investigated and a prediction model was developed related to average surface roughness (Ra) using experimental data.

233 citations

Journal ArticleDOI
TL;DR: In this article, a mathematical prediction model of the surface roughness of AISI 410 steel was developed in terms of feed rate, tool nose radius, cutting speed and depth of cut.

202 citations