Papers Posted on - Mar / 2018


Author Name L.Selvarajan
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DOI http://dx.doi.org/10.11127/ijammc2018.03.01Copyright@
Paper Title Experimental Investigation On Edm For Ss 307 Material To Improve Geomentrical Error Using 3d Shaped Copper Electrode
Abstract
A comprehensive investigation made on Electrical Discharge Machining (EDM) parameters for improving geometrical error on complex shapes. This article includes research of various parameters like metal removal rate, tool wear rate and angularity which is essential for achieving geometrical tolerance. Complex shaped 3d copper electrode is used for machining of SS 307 steel material since copper has high electrical conductivity. Taguchi’s orthogonal array analysis is adopted to find the input sparking parameters combinations like pulse on time, pulse off time, current and dielectric pressure. Experimental results shown in MWR, TWR and geometrical error were improved which can be optimized by use of EDM process.
Keywords
EDM; MRR; TWR; Parallelism.
Author Name Prakash.B
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DOI http://dx.doi.org/10.11127/ijammc2018.03.02
Paper Title Optimization of Geometrical Errors in EDM process parameters using Taguchi Technique
Abstract
Electrical Discharge Machining is a process of shaping hard materials and forming complex shapes by using erosion in all kinds of conductive materials.EDM researchers exploit a number of ways to improve EDM process parameters such as Nonelectric parameters, electrode-based parameters, powder-based parameters and electrical parameters. This research, optimizes the square hole drilling of SS316 Austenitic Stainless Steel composites by using the Taguchi technique. The Results reviews that the reconsider copper electrode with an aberrant through square hole has the superlative performance for machining from various aspects. Considering basic parameters such as dielectric pressure, pulse on time, pulse off time for machining the effect of these basic input parameters. Finally, the parameters of output results like Material Removal Rate (MRR), Perpendicularity (PER), Parallelism, Electrode Wear Rate (EWR) and Wear ratio (WR) were optimized.
Keywords
Electrical Discharge Machining (EDM), Material Removal Rate (MRR), Perpendicularity (PER), Electrode Wear Rate (EWR), Wear ratio (WR)
Author Name Bibin Jose
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DOI http://dx.doi.org/10.11127/ijammc2018.03.03
Paper Title Influence Of Nitrogen On Wear Properties Of 316l (N) Stainless Steels
Abstract
In this paper, the influence of nitrogen content on the tribological behavior of 316L (N) stainless has been studied at nitrogen levels of 0.07, 0.11 and 0.22 wt. %. AISI 316 L, an austenitic stainless steel is the key structural material used in the sodium cooled fast breeder reactor (PFBR). Dry sliding wear tests were carried out using a pin-on-disc test rig as per ASTM standard G99-05 at constant load (40 N) and sliding speed (0.8 m/s). Two different temperatures namely room temperature and 200°C were reported. The tests have been carried out in vacuum of 10-6 torr to simulate the wear in sodium atmosphere. The wear parameters were calculated by using the weight loss method and the micrographs were taken by laser con-focal microscope. It was found that 316L (N) stainless steel bearing 0.07wt% nitrogen possessed superior wear resistance than the rest of the combinations chosen for the experimental study.
Keywords
Nitrogen, 316L (N) Stainless Steel, Sliding Wear, Pin-on-Disc
Author Name R.Venkatesh
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DOI http://dx.doi.org/10.11127/ijammc2018.03.04
Paper Title Optimization of Machining Parameters in Wire Cut EDM of Stainless Steel 304 Using Taguchi Techniques
Abstract
This paper presents the optimization of Wire Electrical Discharge Machining (WEDM) process parameters such as pulse on-time (Ton), pulse off-time (Toff) and wire feed rate (WF) to obtain the greatest material removal rate (MRR) and less surface roughness (Ra) of stainless steel 304. The machining experiments were conducted according to the Taguchi parametric design (L9 orthogonal array) using 0.25 mm diameter brass wire as a cutting tool. Signal to noise ratio (S/N) and Analysis of variance (ANOVA) were used to find the consequence of each parameter. Optimum cutting parameters have been verified through experiments. The results indicate that pulse on-time is the most significant factor influencing the MRR and Ra followed by pulse off-time and wire feed rate.
Keywords
WEDM, Stainless steel 304, Taguchi, ANOVA
Author Name Omkar Bamane
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DOI http://dx.doi.org/10.11127/ijammc2018.03.06
Paper Title Experimental Studies On Distortion Of Tig Welded Ss304 L Sheets And Its Influencing Parameters Using Anova
Abstract
Gas Tungsten Arc Welding is one of the widely used welding processes which deploy a non-consumable tungsten electrode. Selection of certain welding process parameters becomes vital to achieve mechanically sound weld joints. Due to the non-uniform heat distribution, the welded components predominantly show bending distortions. This work emphasizes on minimizing the distortions, which are undesirable in strength and integrity perspective of the weld joints. Using the Analysis of Variance, the distortion in the welded joint was minimized by studying the most influential parameter attributing to it. 1.55 mm thick 304L stainless steel sheets were welded autogenously using an automatic GTAW machine. A full factorial experiment was designed with two factors as current (I) and welding speed. Two levels were selected for each factor based on the trials conducted. Distortions were measured by ink impression method and experimental data was analyzed in Minitab 17 for sorting out the influence of each parameter. Results obtained from this study signify that welding current is the critical parameter, which influences distortion to a relatively greater extent than the weld traverse speed of the electrode. Samples with relatively lesser traverse weld speeds portray more pronounced distortions due to the lack of uniform mobilization of localized heat input.
Keywords
GTAW, Distortion, SS304L, Design of Experiment.
Author Name Ankush Kohli
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DOI http://dx.doi.org/10.11127/ijammc2018.03.07
Paper Title Application Of Nano Fluid And Impact Of Cutting Forces In The Milling Of Aluminium And Aluminium Based Metal Matrix Composites
Abstract
Milling of aluminium (Al) and aluminium based MMC is well-known key-process for modern machining in the various engineering applications. The analysis of the cutting forces in themilling of Al and its MMC plays an important role in characterizing the cutting operations, surface integrity and tool life depending upon the cutting forces. In this paper, study the milling of Al under different influence factors like milling with new class of lubricant and also cover the part of the effect of the Nanofluid apply through minimum quantity lubrication system (MQL). Furthermore, the physical properties of the Nano fluids show a non-linear relation with the concentration of the percentage of the Nano particle and also impact on the cutting parameters[1]. For additional improvement, application of Nanofluids canreduce the cutting forces in the milling of aluminium [2].Nano fluid MQL effectively eliminates the chips and reduced the build-up edge (BUE) [3].
Keywords
milling of aluminium and aluminium MMC, cutting forces, Nano Fluids (NF)and MQL.
Author Name Pawan Soni
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DOI http://dx.doi.org/10.11127/ijammc 2018.03.08
Paper Title Effect of Nickel nano-powder on joining SS316-SS316 through microwave hybrid heating
Abstract
Micro-interface-powder based joints have been investigated earlier but effect of using nano-powder as interface material during microwave joining of SS316-SS316 were not investigated earlier. In this work, Nickel nano-powder has been used as an interfacing material with an objective to produce joints having better physical and mechanical properties than micro-size Nickel powder based counterparts. Experiments were carried out for joining SS-316 workpieces in microwave applicator working on 800 W and 2.45 Hz. Performance of nano-powder based joints have been compared withmicro-powder based joints after conducting physical and mechanical tests. Results of physical tests show well fusion of Nickel with base material. Hardness tests show that hardness of the joints was 450 Hv which was considerably higher than 420 Hv reported in previous literature related to micro-powder based joints. Tensile strength of joints was 385 MPa which is much higher than 309 MPa value measured earlier for micro-powder based joints. Overall, nano-powder based joints exhibited better physical as well as mechanical properties than micro-powder based joints.
Keywords
Microwave hybrid heating; Microwave joining; SS-316; Nickel nano-powder
Author Name AmardeepSingh
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DOI http://dx.doi.org/10.11127/ijammc 2018.03.09
Paper Title Comprehensive Review Of Current Research Trends In Magnetic Abrasive Finishing (Maf) Process
Abstract
Magnetic Abrasive Finishing (MAF) process is a nontraditional machining process which has been developed to improve the surface quality and to remove burrs of the workpiece. The MAF can be maneuvered to finish ‘difficult surfaces’ like the internal surface of capillary tube, needle, and elbows. In MAF, a mixture of abrasives and ferromagnetic particles named as magnetic abrasives act as a multipoint cutting tool. The magnetic abrasives form a Magnetic Abrasive Flexible Brush (MAFB) due to the action of the magnetic field and provide the finishing of theworkpiece surface. This paper reviews the research trends by considering various aspects of MAF likeMagnetic abrasives, theHybrid approach in MAF, Applications of MAF for industrial products, Modeling & simulation in MAF, different types of abrasives, theshape of theworkpiece. The information collected from research studiesissummarized and presented in the form of graphs.
Keywords
MAF, abrasives, MAPs, Hybrid approach etc.
Author Name Kaushik Kumar
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DOI http://dx.doi.org/10.11127/ijammc2018.03.010
Paper Title Utilization Of Particle Swarm Optimization Technique For Process Parameter Optimization In Electrical Discharge Machining
Abstract
Electrical discharge machining (EDM) is a non-conventional machining process that is used for machining of hard-to-machine materials. The EDM process is commonly used in automobile, chemical, aerospace, biomedical, tool and die industries. However, it is very important to select optimum values of input process parameters to maximize the machining performance. However, the optimization of the output process parameters and hence machining performance is a difficult task. In this paper an attempt has been made to carry out single objective optimization of the material removal rate (MRR) and the surface roughness (SR) for the EDM process of EN31through particle swarm optimization (PSO) technique. The input parameter considered for the optimization are Current (A), Pulse on time (μs), Pulse off time (μs) and Voltage (V). The optimum value of MRR and SR as found using the PSO algorithm are 351.25 mm3/min and 1.85 μm,
Keywords
Heuristic Optimization; Non-Conventional Machining, Material Removal Rate, Surface Roughness; Particle Swarm Optimization; Electrical Discharge Machining