Готові списки джерел за темами / WIRE-CUT EDM PROCESS

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Добірка наукової літератури з теми "WIRE-CUT EDM PROCESS"

Автор: Grafiati

Опубліковано: 11 вересня 2023

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Статті в журналах з теми "WIRE-CUT EDM PROCESS"

Sen, Ruma, P. Charkraborti, and J. Debbarma. "Wear Behavior in Wire of Wire Cut EDM." Applied Mechanics and Materials 704 (December 2014): 70–76. http://dx.doi.org/10.4028/www.scientific.net/amm.704.70.

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Анотація:

Wire electrical discharge machining (WEDM) is a specialized thermal machining process, capable of accurately machining parts with different hardness, complex shapes and sharp edges that are very difficult to be machined by the traditional machining processes. The practical technology of the WEDM process is based on the conventional EDM sparking phenomenon utilizing the widely accepted noncontact technique of material removal.In this paper, the effects of various process parameters of WEDM like pulse on time (Ton), peak current (IP), wire feed (WF) and wire tension (WT) have been investigated to study their impact on wear of wire of ELECTRONICA SPRINTCUT WEDM machine.It is found that the wear is influenced with increase in pulse on time (Ton) and wire tension.

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Beltrami, Ivano, Axel Bertholds, and Dirk Dauw. "A simplified post process for wire cut EDM." Journal of Materials Processing Technology 58, no. 4 (April 1996): 385–89. http://dx.doi.org/10.1016/0924-0136(95)02212-0.

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Muttamara, Apiwat, and Patittar Nakwong. "Enhancing Wire-EDM Performance with Zinc-Coated Brass Wire Electrode and Ultrasonic Vibration." Micromachines 14, no. 4 (April 16, 2023): 862. http://dx.doi.org/10.3390/mi14040862.

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This study aimed to investigate the performance of zinc-coated brass wire in wire-cut electrical discharge machining (EDM) using an ultrasonic-assisted wire on tungsten carbide. The research focused on the effect of the wire electrode material on the material removal rate, surface roughness, and discharge waveform. Experimental results demonstrated that using ultrasonic vibration improved the material removal rate and reduced surface roughness compared to conventional wire-EDM. Cross-sectional SEM of the white layer and discharge waveform were investigated to explain the phenomena of ultrasonic vibration in the wire-cut EDM process.

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Satynarayana, Kosaraju, Kumkuma Rajkiran, Pujari Anil kumar, and D. Chakradhar. "A Role of cryogenic in Wire cut EDM process." E3S Web of Conferences 184 (2020): 01067. http://dx.doi.org/10.1051/e3sconf/202018401067.

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Анотація:

Novel techniques are being focused on the enrichment of the performance characteristics under different machining processes. Cryogenic is one of such novel practices that tunes the surface integrity with vast variations with the traditional machining processes. Dimensional accuracy, surface roughness, material removal rate with less reduction in scrap of material is one of the prior targets of production process. Wire cut Electro Discharge Machining (WEDM) is one method that satisfy with upgrading performance characteristics. In order to step-up these performance characteristics in attaining superior quality, cryogenics practices have collaborated with the WEDM process. Present paper deals with the reviews of the researchers that have been performed over cryogenic treated WEDM process. Effect of performance characteristics like pulse on, pulse off, current, voltage, wire tension, wire feed is discussed with relation to material removal rate, tool wear rate and surface roughness evolved. Key concept of paper is to include the research ideology with best feasible techniques that can prevail in production practice in order of contribute to the forthcoming researches in industrial and production departments.

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Bergs, T., L. Welschof, T. Herrig, and A. Klink. "Energetic Characterization of Trim Cut Process Signals in Wire EDM." Procedia CIRP 95 (2020): 262–67. http://dx.doi.org/10.1016/j.procir.2020.02.281.

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Lok, Y. K., and T. C. Lee. "Processing of advanced ceramics using the wire-cut EDM process." Journal of Materials Processing Technology 63, no. 1-3 (January 1997): 839–43. http://dx.doi.org/10.1016/s0924-0136(96)02735-5.

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A. Kumar, N. Dutt, V. Pratap Singh, C. S. Meena, and A. Prasad. "Performance Evaluation of WEDM using Parametric Variation." Journal of Mechanical Engineering: Prakash 01, no. 01 (2022): 07–13. http://dx.doi.org/10.56697/jmep.2022.1102.

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Анотація:

Wire cut Electrical-Discharge Machining (Wire-EDM) is a variation of EDM process which utilizes a thin wire (around 0.18mm) for material removal. In this article surface roughness in WEDM process was analysed using Taguchi method and experimental results. In experiments it was observed that by increasing the current surface roughness increases and rough surface is produced. Peak current is the most critical parameter having a contribution of 82.12%.

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Kumarswamy, Y., P. Durga Ganesh, K. Ravi Kumar, S. Sai Varun, G. Jagan Vamsi, and Y. Phaneendra. "Optimize the process parameters of wire EDM and to analyse the welding characteristics of tig welding joints using AISI 308." E3S Web of Conferences 391 (2023): 01043. http://dx.doi.org/10.1051/e3sconf/202339101043.

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Анотація:

Wire Cut EDM technique is widely used to make small and precision cuts. Generally, a material with fragile geometry and hard structure is cut using a wire cut EDM. The main advantage of this method is that, it is a non-conventional machining process therefore it does not have a contact between the tool (wire) and the workpiece. This advantage gives it an edge over other machining techniques and it makes the process capable of machining even the weak structured and delicate materials. In the present experimental work, by using various machining parameters (Pulse on Time, Pulse off Time, and Wire Speed) were optimized using Taguchi’s L9 orthogonal array. Welding is most the important industrial processes, therefore lots of techniques have been developed to get an efficient and low-cost welding process for different types of materials. In this we will discuss about the welding characteristics of the of tig welding joints produced using different currents. That is, by changing the voltages for the number of passes to improve and strengthen the welded joint The research work aims to optimize the wire cut EDM process parameters for AISI 308 steel and analyze the welding characteristics of Tungsten Inert Gas (TIG) welded joints of the same material. The study intends to find the optimum combination of process parameters that would lead to the highest material removal rate, lowest wear rate, and best tensile properties of the material.

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Mohamedosman Elyass, Waddah, Vishal Sharma, Ganesh Kantak, and Mohd Mukhtar Alam. "Performance Investigation of Wire EDM Process Parameters." IOP Conference Series: Materials Science and Engineering 1224, no. 1 (January 1, 2022): 012001. http://dx.doi.org/10.1088/1757-899x/1224/1/012001.

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Abstract It is exceptionally difficult to create confusing geometry in such a material using traditional machining measurement. At present, companies use a non-regular machining strategy which uses energies like electricity, chemical, sound, light, etc. which are useful for machining hard materials. WEDM machines are used to cut complex and simple patterns and have the potential to achieve the maximum production capacity since the last few decades. This study was carried out in two parts. The first segment was consolidated with analyses of the Taguchi method depending on the signal-to-noise ratio (S / N) and regression modelling for the S / N ratio. In the second segment, the model condition was created using the RSM methodology. L16 orthogonal array was used with four levels of parameters namely, pulse on time, pulse off time, wire feed rate and peak current to find the effects on optimal response variables namely, cutting time, cutting rate, overcut and dimensional deviations. The results of the regression analysis showed that there was significant effect of pulse on/off and peak current on the cutting time and for cutting rate there was also significant effect of wire feed rated. Therefore, it can be concluded that all the four process parameters can affect the response variables.

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Nandakumar, C., B. Mohan, and S. Srisathirapathy. "Optimization of Process Parameters of Titanium Alloy Grade 5 Using CNC Wire-Cut EDM." Advanced Materials Research 984-985 (July 2014): 56–61. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.56.

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Accompanying the development of mechanical industry, the demand for alloy materials having high hardness, toughness and impact strength are increasing. As these materials pose severe difficulty to be machined by conventional methods, Wire-cut Electric Discharge Machining (Wire EDM) machines are employed to machine them. The ultimate requirement of any machining process being fine surface finish, is accurately satisfied by wire-cut EDM process. Hence this project aims at obtaining the best surface finish by optimizing various process parameters affecting the machining conditions. With the assistance of Taguchi quality engineering, various number of experiments will be conducted by varying the process parameters at various levels. The output response variable being surface roughness, will be measured for all the number of experiments conducted. As the lowest value of surface roughness indicates the best surface finish, the optimum parameter level combination would be analyzed which gives desired surface finish. These optimized values of various parameters would then be used in performing machining operation in order to obtain desirable outputs.

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Більше джерел

Дисертації з теми "WIRE-CUT EDM PROCESS"

UJJWAL. "EXPERIMENTAL INVESTIGATION OF FERROUS ALLOY USING WIRE-CUT EDM PROCESS." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15347.

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Анотація:

Wire-Cut Electrical Discharge Machining (WEDM) is more appropriate techniques for machining difficult–to-machine materials. Electrically conductive materials are cut by Wire-cut EDM that uses a wire as electrode in an electro-thermal mechanism. Since there is no direct contact between wire electrode and the work pieces in Wire-cut EDM methodology, the mechanical stress and vibration problems in machining are eliminated. The focus of this investigation is on machining of AISI H-13 Die steel material with Wire-cut EDM and to study the effect of coated and uncoated wires electrodes on machining performance and wire breakage phenomenon. In this investigation, study of effect of process parameters including Pulse-on Time, Pulse-off Time, Wire Feed-rate and Wire Tension on process performance parameters such as cutting Speed, metal removal rate and surface integrity are investigated. All experiments were conducted using FANUC ROBOCUT Alpha 1-iE CNC Wire-Cut EDM. A Taguchi L9 Design of Experiment (DOE) is applied to determine the effect of significant parameters on Wire-cut EDM performance. To analyze the date, analysis of variance (ANOVA) has been use to find the optimal levels for each process parameter. Several experiments are done in order to find the effect of machining parameters and their setting on wire breakage.

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蘇柏全. "The Study of the taper-cut machining process of the wire-EDM." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/36037718518774892930.

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Анотація:

碩士
國立臺灣大學
機械工程學研究所
90
Improvement of the machining performance of the taper-cut machining process of the wire —EDM is studied, in a hope that higher machining speed can be obtained by way of adjusting the tension of the wire. Most of the studies to date regarding the taper-cut machining are aimed at modifying the mechanism of the wire—EDM machines, in an effort to have the upper and lower guides of the wire concentrically aligned so that the machining fluid, i.e. water, can be easily infused into the discharge area to overcome the insufficiency of the flushing of the fluid and therefore a higher machining speed can be applied. However, for the traditional wire-EDM machines of which the structure and mechanism are unlikely to be modified, it is necessary to investigate other possible approaches for reaching higher the machining speed. In this study, a stand-alone electronic system for discriminating the discharge pulses into two categories — short and normal sparks - is devised in the first place. The percentage of the short sparks against the total discharge pulses, also known as the “short ratio”, is introduced as an index of the machining performance. The lower short ratio implies the more favorable performance. Based on the analysis of pulse trains under various machining conditions involving different wire tensions, water flushing pressures, work piece thickness, the rule for adjusting the tension of the wire in order to have favorable machining speed, in accordance with different inclining angles of wire, is obtained. In addition, a regression equation in which the wire tension, the wire angle, the work feed rate and off time are set as the four variables while the short ratio as the dependent, is established. With the assistance of the equation, short ratio, can be estimated under any given values of the three variables, without the need of the discharge pulses discriminating system said above. In the end, this paper also proposes a control strategy for taper-cut machining process of wire-EDM so as to develop a real-time on-line discharge pulses monitoring system.

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Cheng, Bo-Sheng, and 程博聖. "A Study of Optimal Two Cut Process Parameters for Wire-EDM on K340 Die Steel by Using Design of Experiments and Response Surface Methodology." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/22982120815547976017.

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Анотація:

碩士
國立高雄應用科技大學
模具工程系
103
Wire-EDM is a very important manufacturing process in mold industry and it is for the best choice for high hardness material and high-precision requirement. The research in line cutting optimization parameters is numerous, but in-depth explorations in the optimization of maching number are few, so in this research parameters optimization experiment for Wire-EDM second blade machining process is planned and designed. The study adopted a two-stage experiment. The first part uses Two-Level Fractional Factorial Design for factor screening, followed by experimental analysis to identify the more significant factor and finally the application of Response surface methodology (RSM) and Face-Centered Central Composite Design (FCCCD) to assess the inter-important factor by screening the expected range and the level of quality of response characteristics. The latent interference factor will affect the results, though this study adopted the randomized design, but the interference factor is unknown and cannot control or known to be controlled. This study configures Balanced Incomplete Block Design (BIBD) techniques to deal with the elimination of interference factors during the experiment and the trend effect, while obtaining optimization parameters for the wire-cut electric discharge machining process. Control facfor of this study: the open circuit voltage, short circuit discharge time, discharge time, short rest time, rest time, a servo reference voltage, the feed rate and the wire tension along with the experiments to explore the quality characteristics of the surface roughness, dimensions and processing time. After the completion of the experiment and verified with K340 die and steel Wire-EDM, the optimized processing parameters were open circuit voltage of 7 V, discharge time of 1 , short rest time of 15 s, servo reference voltage of 40 V, feed rate of 12 and the thread tension of 8 g. For the working environment at room temperature of 34 ℃, the optimized quality characteristics was the surface roughness of 2.3 , for the size of 10 mm and the required precision machining time was 194 sec. In the working environment with the standard ambient temperature of 25 ℃, the optimization quality characteristics was the surface roughness of 1.92 for the size of 10 mm and the required precision machining time was 186 sec.

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Книги з теми "WIRE-CUT EDM PROCESS"

JOSHI, G. R. OPTIMIZATION by GREY RELATIONAL ANALYSIS and TAGUCHI METHOD: Application of Grey Relational Analysis and Taguchi Method for Optimization of the Wire-Cut Edm Process. Independently Published, 2021.

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Частини книг з теми "WIRE-CUT EDM PROCESS"

Salman Khan, Midthur A., C. Nandakumar, B. Mohan, and R. Senthil Kumar. "Multi-response Optimization of Inconel 825 Process Parameters Using LN2 Cooled Zinc-Coated Brass Wire in CNC Wire-Cut EDM." In Lecture Notes in Mechanical Engineering, 875–96. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4745-4_76.

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Kumar, Arvind, Subhan Pandey, Virendra Singh, and Ram Naresh Rai. "Study on the Effect of Process Parameters on Machinability Performance of AA7050/B4C Metal Matrix Composite on Wire Cut EDM." In Lecture Notes in Mechanical Engineering, 1545–54. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0550-5_149.

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Pramanik, Debal, and Dipankar Bose. "Experimental Evaluation on Corner Accuracy in WEDM for Aluminium 6061 Alloy." In Machine Learning Applications in Non-Conventional Machining Processes, 96–113. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3624-7.ch007.

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Анотація:

An important electro-thermal process known as wire electrical discharge machining (WEDM) is applied for machining of conductive materials to generate most precisely. All cutting inaccuracies of WEDM arise out of the major cause of wire bending. At the time of cutting a sharp corner or cut profile, bending of the wire leads to a geometrical error on the workpiece. Though this type of error may be of a few hundred microns, it is not suitable for micro applications. In this research study, an experimental investigation based on response surface methodology (RSM) has been done on wire EDM of Aluminium 6061 t6 alloy. This chapter studies the outcome of input process variables (i.e., wire feed rate, pulse on time, pulse off time, and gap voltage) on machining output responses (i.e., corner inaccuracy) extensively. Experimental validation of the proposed model shows that corner inaccuracy value may be reduced by modification of input parameters.

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Тези доповідей конференцій з теми "WIRE-CUT EDM PROCESS"

Shunmugam, M. S., S. S. Kumar, and I. K. Kaul. "Fuzzy logic modeling of wire-cut EDM process." In Intelligent Systems and Smart Manufacturing, edited by Bhaskaran Gopalakrishnan and Angappa Gunasekaran. SPIE, 2000. http://dx.doi.org/10.1117/12.403674.

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Subramaniam PhD, Kumaravel, Alagumurthi Natarajan PhD, Nadanakumar Vinayagam, S. Jenoris Muthiya, and Ramdoss Rajendiran PhD. "Optimization of Wire Cut EDM Process Parameters of Al/SiO2 Composites Using Taguchi Method." In International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2020. http://dx.doi.org/10.4271/2020-28-0426.

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Kuruvila, Nixon, and H. V. Ravindra. "Parametric Influence and Optimization of Wire EDM on Oil Hardened Non Shrinking Steel." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63379.

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Wire-cut Electro Discharge Machining (WEDM) is a special form of conventional EDM process in which electrode is a continuously moving conductive wire. The present study aims at determining parametric influence and optimum process parameters of Wire-EDM using Taguchi’s Technique and Genetic algorithm. The variation of the performance parameters with machining parameters was mathematically modeled by Regression analysis method. The objective functions are Dimensional Accuracy (DA) and Volumetric Material Removal Rate (VMRR). Experiments were designed as per Taguchi’s L16 Orthogonal Array (OA) where in Pulse-on duration, Current, Pulse-off duration, Bed-speed and Flushing rate have been considered as the important input parameters. The matrix experiments were conducted for the material Oil Hardened Non Shrinking Steel (OHNS) having the thickness of 40 mm. The results of the study reveals that among the machining parameters it is preferable to go in for smaller pulse-off duration for achieving over all good performance. Regarding MRR, OHNS is to be eroded with medium pulse-off duration and higher flush rate. Finally, the validation exercise performed with the optimum levels of the process parameters. The results confirm the efficiency of the approach employed for optimization of process parameters in this study.

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Smith, Andrew N., Ralph J. Volino, and Karen A. Flack. "Design of a Heat Sink in an Undergraduate Heat Transfer Course." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89077.

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Thermal design was incorporated into an undergraduate heat transfer course through a multistage design project. The students were tasked with designing water channels to be cut in an aluminum block using a wire electrical discharge machining (EDM) process. The students begin the process by analyzing the internal channels as a one dimensional array of fins using traditional analysis and correlations and Engineering Equation Solver (EES) to perform the calculations. Working in groups of two, the students conduct several parametric studies and develop a preliminary design using an array of fins method. The requirements for the design included outcomes that had to be met, along with weighting factors for key aspects of the design such as thermal performance, pressure drop, fabrication cost and volumetric flow rate. Next, the students analyze their preliminary design using SolidWorks flow simulation and compare their results to the one dimensional array of fins analysis. The groups then begin the process of refining their design using SolidWorks flow simulation to predict key parameters. Finally, the students select their best design which is fabricated using a wire EDM machine. The heat sinks are tested using a single experimental apparatus and the best design is determined based on the original requirements. The project is first introduced when the students are covering resistor networks and the analysis of an array of fins. The computational aspect of the project begins after the students have covered steady state conduction using finite difference methods. Using the computational results the students plot the heat transfer coefficient on the surface of the channel, which complements the lectures on internal developing flows.

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Serasli, Karim, Douglas Cave, and Ed Kingston. "Residual Stress Measurements Using the Contour, Deep-Hole Drilling and Neutron Diffraction Methods in T-Section Specimens." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63879.

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The presence of high magnitude residual stresses in welded components causes material degradation, local yielding and plastic deformation. Their presence provides the potential for premature failure and compromises the integrity of a structure. This paper presents a review of work carried out to ascertain the residual stresses present within T-section specimens, made from ferritic steel, in their as-welded condition. The standard and incremental deep hole drilling (DHD and iDHD) techniques, the neutron diffraction (ND) and the contour method were applied to characterise the residual stresses in the regions in and around the two fillet welds of the specimens and the surrounding parent material within which the balancing residual stresses needed to be measured. The results of these measurements are presented and compared to highlight agreements and discrepancies in the measured residual stress distributions using these different techniques. A compendium of measurements at a similar location in various T-sections and their comparison with the BS7910 standard show that the measured longitudinal distributions are similar despite the observed scatter. Finally, this paper briefly attempts to investigate and discuss the technical challenges identified when applying the contour method to complex geometry components. The constraint of the specimen during the wire electro-discharge machining (EDM) process, the quality of the wire EDM cut made and the analysis of the raw data for the conversion into residual stresses directly affect the accuracy of the contour method results. The identification and investigation of these challenges lead to continuous improvements of the contour method procedure and reduce uncertainties of the measurement.

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Traore, Yeli, P. John Bouchard, John Francis, and Foroogh Hosseinzadeh. "A Novel Cutting Strategy for Reducing Plasticity Induced Errors in Residual Stress Measurements Made With the Contour Method." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57509.

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The contour method (CM) has emerged as a valuable technique for the measurement of residual stresses (RS). The method involves cutting the sample in which residual stresses are to be measured, using wire electric discharge machining (EDM), and measuring the deformation that occurs on the newly created surface, which can be related to the residual stresses that existed beforehand. The contour method provides a full 2-D map of the stresses acting in a direction normal to the plane of the cut. It is ideally suited to measurements in power plant welds since, unlike diffraction-based techniques, it is not affected by microstructure gradients, and it is well suited to thick section components. However, as with other mechanical strain relief techniques, it is prone to errors arising from plasticity when residual stresses close to the yield strength of material are encountered. This paper describes contour method measurements in an AISI Type 316L austenitic steel three-pass. A novel cutting and restraint strategy is applied in an attempt to reduce plasticity errors following optimisation studies simulating the cutting process using the finite element (FE) method.

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Prakash, Raghu V., Chandan K. Mukhopadhyay, Prathmesh Pokharkar, and Manuel Thomas. "Acoustic Emission Monitoring During Fatigue Crack Growth in Standard C(T) and Miniature Single Edge Notch Tension Specimens." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21416.

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Abstract The fatigue crack growth rate studies in a structural alloy has been carried out using ASTM E-647 standard compact tension (C(T)) specimens and miniature single edge notch tension specimens (SEN(T)) at two different stress ratios of 0.1 and 0.7. Standard C(T) specimen had a dimension of 63.5 × 61 × 8 mm thickness while the miniature SEN(T) specimen had a size of 20 mm effective length × 10 mm wide and 0.7 mm thickness. A starter notch of 0.5 mm was cut using wire EDM process to initiate fatigue crack growth in miniature SEN(T) specimen. A special fixture was designed for testing the miniature SEN(T) specimen. During the fatigue crack growth experiments, Acoustic Emission (AE) activity was monitored on-line using AE sensors from Physical Acoustics, Mistras Group, USA. For the experiments on standard C(T) specimens, a standard probe (R15A) of 15 mm diameter was used, while for small size compact tension specimen, a Nano30 AE probe was used. The crack growth was monitored by visual methods as well as by compliance technique. The cumulative counts and absolute energy information obtained during fatigue crack growth testing was used to correlate the crack growth rate with acoustic emission activity. Empirical fit of data was used to obtain cross-correlation between crack growth rate and AE parameters for both the specimen geometries. The study suggested that suitable selection and placement of sensors is essential to obtain good results using AE sensor technique.

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Velukkudi Santhanam, Senthil Kumar, Jeffrin Michael Gnana Anbalagan, Shanmuga Sundaram Karibeeran, Dhanashekar Manickam, and Ramaiyan Sankar. "Multi Response Optimization of Friction Stir Processing Parameters on Cryo-Rolled AZ31B Alloys." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23198.

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Abstract Friction stir processing (FSP) method is a solid-state technique used for microstructural alteration and enhancing mechanical properties of sheet metals and as-cast materials. Aluminium, brass, copper, steel, tin, nickel, magnesium and titanium are the widely used materials in friction stir processing. Even though magnesium has low density compared to aluminium, only few reports are made on magnesium. Two stage of process was carried out on the experiment to obtain fine grain refinement and improved strength. First, Cryo-rolling processing on 6mm thickness AZ31B alloy at constant roller power, roller rotation speed, strength coefficient and strain exponent. AZ31B alloy is dipped in liquid nitrogen for certain period and rolled in it’s cold state. Number of passes into roller was same for 9 samples. Cryo-rolled AZ31B is used as sample for the second stage i.e., Friction stir processing. FSPed material produce refined grain structure, micro-structurally modified cast alloys by alloying specific elements, and improvement in material strength. Based on Process parameters the properties of the material alters. Friction stir processing was performed on cryo-rolled AZ31B magnesium alloy with various processing parameters. The effect of process parameters (tool pin geometry, tool rotational speed and tool traverse speed) on two responses namely ultimate tensile strength and micro-hardness values were measured. The tool used for Friction stir processing is H13 high carbon steel with hardness upto 60 HRC. Tool pin geometry used for Friction stir processing are square, cylinder and tapered. The processed materials are cut using wire cut EDM as per ASTM standards to measure the ultimate tensile strength and hardness. Universal tester and Vickers hardness tester were used to measure the tensile strength and hardness of the Friction stir processed sample. Most of the research has been published on cryo-rolled and FSP experiments separately. In this work, a combination of these two process is developed for improved tensile strength, hardness, and ultrafine grain refinement. A multi-response optimization was performed using grey relation analysis (GRA) to find out the optimum combination of the process parameters for maximum ultimate tensile strength hardness. Analysis of variance (ANOVA) and F-test were performed to determine the most significant parameters at a 95% confidence level. The corrosion test was made on Friction stir processed cryo-rolled AZ31B alloy for every process parameters. Salt spray test was done as per ASTM standard to find the corrosion rate. The corrosion rate for Friction stir processed cryo-rolled material is less (at optimal condition). The microstructure analysis was done on the samples using a Scanning Electron Microscopy. For clear view of grains the material is subjected to polishing and etching. The etchant used on the material is Picral + Acetic acid + Hydrogen peroxide. Fine grain size was obtained on the Friction Stir processed Cryo-rolled AZ31B magnesium alloy at optimal condition.

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