Jatinder Kapoor

Bio: Jatinder Kapoor is an academic researcher from Guru Nanak Dev Engineering College, Ludhiana. The author has contributed to research in topics: Electrical discharge machining & Surface roughness. The author has an hindex of 5, co-authored 23 publications receiving 165 citations. Previous affiliations of Jatinder Kapoor include Guru Nanak Dev Engineering College, Bidar & Punjabi University.

Recent Developments in Wire Electrodes for High Performance WEDM

Abstract: Wire electrical discharge machining (WEDM) is an important technology, which demands high-speed cutting and high-precision machining to realize productivity and improved accuracy for manufacturing of press stamping dies, prototype parts etc. Manufacturing advances in Electrical discharge machining (EDM) wires have directly contributed to increased cutting speed and dimensional accuracy. This paper focuses on evolution of EDM wire from copper to brass and from brass to various coated wire, which has helped make wire EDM machining, the method of choice for high-speed production applications, as well as applications requiring improved contour accuracy and improved surface finishes. Some of the characteristics of high performance wire electrodes have been presented, which significantly increase the wire electrical discharge machining productivity.

High-performance wire electrodes for wire electrical-discharge machining – a review:

Abstract: In a wire electrical-discharge machining process an electrically conductive workpiece is eroded ahead of a continuous moving wire by spark discharges, which are identical with those in conventional...

Effect of cryogenic treated brass wire electrode on material removal rate in wire electrical discharge machining

Abstract: In this article, the effect of cryogenic treatment on the brass wire electrode used in wire electrical discharge machining is investigated. Deep cryogenic (−184°C) treatment is given to the brass wire electrode. The microstructure and crystalline phase of deep and non-cryogenic treated brass wire electrodes is observed by scanning electron microscope and X-Ray diffraction. The experimental results show that the structure is more refined in deep cryogenic treatment as compared to non-cryogenic treatment. The electrical conductivity of deep electrode is greatly improved. The effect of deep cryogenic treatment on the brass wire electrode is also investigated for the performance of wire electrical discharge machining. Taguchi experimental design has been applied to investigate the optimal parameters for maximum material removal rate. The ANOVA analysis indicates that type of wire, pulse width, time between two pulses and wire tension are significant factors for maximization of material removal rate. The cryog...

The effect of machining parameters on surface roughness and material removal rate with cryogenic treated wire in WEDM

Abstract: Wire electrical discharge machining (WEDM) has been used widely for the manufacturing of dies, moulds, punches and machine parts. The machining performance is affected by process parameters and type of wire electrode used. Increased cutting speed and improved accuracy can be realised in terms of high performance wire electrodes. The purpose of this study is to investigate the effect of cryogenic treated brass wire electrode on surface roughness and material removal rate for WEDM. This paper describes the influence of various machining parameters (including pulse width, time between two pulses, wire tension and wire feed) on surface roughness and material removal rate by using one variable at a time approach. Improvement in surface roughness was observed for lower values of pulse width and higher values of time between two pulses. Under same conditions, deep and shallow cryogenic treated wire electrodes shows significant improvement in machining rate over untreated wire electrodes.

The Design and Analysis of Experiments

Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

Review of improvements in wire electrode properties for longer working time and utilization in wire EDM machining

Abstract: Wire electrical discharge machining (WEDM) is an important technology, which demands high-speed cutting and high-precision machining to realize productivity and improved accuracy for manufacturing hard materials. WEDM has experienced explosive growth and complexity of equipment as well as rising demand for the basic process tool (the wire electrode). Greater taper angles, thicker workpieces, automatic wire threading, and long periods of unattended operation make the selection of the ideal wire a much more critical basis for achieving successful operation. This paper focuses on the evolution of EDM wire electrode technologies from using copper to the widely employed brass wire electrodes and from brass wire electrodes to the latest coated wire electrodes. Wire electrodes have been developed to help user demand and needs through maximum productivity and quantity by choosing the best wire. In the final part of the paper, the possible trends for future WEDM electrode research are discussed.