(Pdf) parameter optimization of wire edm in a range of thickness for en8 die steel gas weed strain


Quality and sophistication of the parts / products are the main requirements of the customer in the present global market. Therefore, the manufacturing / Production industries are searching for un-conventional machining processes to achieve production requirements. One among such production processes is the Wire-EDM. As such, a solemn attempt is made in this paper to investigate the response parameters, viz., Material Removal Rate (MRR) and Surface Roughness (Ra) a by experimentation on EN 19 AISI 420 (SS420) Steels in Wire-EDM process. The Design of experiments is carried-out considering Taguchi Technique with four input parameters, namely, pulse-on, pulse-off, Bed speed and Current. The experiments are conducted considering the above two materials for L16 and then the gas zeta costa rica impact of each parameter is estimated by ANOAVA. Then the regression analysis is carried-out to find the trend of the response of each material. A comparison made between the two materials indicates that the gas stoichiometry worksheet answers EN 19 Material is more suitable for better MRR and AISI 420 for better Surface finish.

DC53 is a newly developed cold die steel from Daido Steel, Japan. It is an improvement over the familiar cold die steel SKD11. Because DC53 is a new die steel, only little information is available in literature for its machining characteristics. This paper investigated the effects of machining parameters on surface roughness of wire EDMed DC53 die steel. The investigated machining parameters were pulse-on time, pulse-off time, pulse-peak current, and wire tension. Analysis of variance (ANOVA) technique was used to find out the parameters affecting the surface roughness. Assumptions of ANOVA were discussed and then examined through residual analysis. Quantitative testing gas and supply methods on residual analysis were employed in place of the typical qualitative testing techniques. Results from ANOVA show that pulse-on time and pulse-peak current are significant variables to surface roughness of wire-EDMed DC53 die steel. The surface roughness of test specimen increased as these two variables increased.

The present work investigates the machining characteristics of EN-8 steel with copper as a tool electrode during rotary electrical discharge machining process. The empirical models for prediction of output parameters have been developed using linear regression analysis by applying logarithmic data transformation of non-linear equation. Three independent input parameters of the model viz. peak current, pulse on time and rotational speed of tool electrode are chosen as variables for evaluating the output parameters such as metal removal rate (MRR), electrode wear ratio (EWR) and surface roughness (SR). Analysis of the results, by using Taguchi’s recommended signal la gasolina mp3–noise ratio formulae and ANOVA, has been conducted to identify the significant parameters and their degree of contribution in the process output. Analyzed results shows that peak current and pulse on time are the most significant and significant parameters for MRR and EWR, respectively. But peak current and electrode rotation become the most significant and significant parameters for SR, respectively. Experimental results further revealed that maximizing the MRR while minimizing EWR and improving the surface roughness, cannot be achieved simultaneously at a particular combination of control parameters setting. In addition, the predictions based on the above developed models have been verified with another electricity 1 7 pdf set of experiments and are found to be in good agreement with the experimental results.

Purpose: In this paper, the effects of various process parameters of WEDM like pulse on time (TON), pulse offtime (TOFF), gap voltage (SV), peak current (IP), wire feed (WF) and wire tension (WT) have been investigatedto reveal their impact on material removal rate of hot die steel (H-11) using one variable at a time approach. Theoptimal set of process parameters has also been predicted to maximize the material removal rate.Design/methodology/approach: The experimental studies were performed on ELECTRONICA SPRINTCUTWEDM machine.Findings: The material removal rate (MRR) directly increases with increase in pulse on time (TON) and peakcurrent (IP) while decreases with increase in pulse off time electricity png (TOFF) and servo voltage (SV).Practical implications: Wire electrical discharge machining (WEDM) is a specialized thermal machiningprocess capable of accurately machining parts which have varying hardness, complex shapes and sharp edgesthat are very difficult to be machined by the traditional machining processes. The practical technology of theWEDM process is based on the conventional EDM sparking phenomenon utilizing the widely accepted noncontacttechnique of material removal.Originality/value: We can say that the wire feed and wire tension are neutral input parameters.

Wire Electrical Discharge Machining (WEDM) is a widely accepted non-traditional material removal process used to manufacture components with intricate shapes and profiles. It is considered as a unique adaptation of the conventional EDM process, which uses an electrode to initialize the sparking process. H13 Hot Work Tool Steel has high hot tensile strength, hot wear-resistance and toughness. Good … [Show full abstract] thermal conductivity and insensitiveness to hot cracking, making electricity powerpoint template it suitable not only for hot die applications but also electricity and magnetism equations plastic moulds. In this study, it is found that most predominant factors for the maximum material removal rate which is 22.21 mm3/min are current which was found to be 200A and Pulse ON Time 125 µs, however rest four factors (voltage 20V, pulse off time 40µs, wire tension 8N and wire feed 7mm/min) has less impact as compare to the predominant factors. The most predominant factors for Minimum surface roughness which is 0.89µm are wire tension 10N, pulse on time 115µs and servo voltage 60V. However, rest three factors pulse off time 60 µs, peak current 140 A and wire feed 7mm/min has less impact as compare to the predominant factors. Read more

Wire Electrical Discharge Machining is one of the most prominent and widely used Non-Traditional machining processes. This Wire-EDM is primarily used gas unlimited houston texas for cutting of complex and intricate profiles in the materials having varying hardness and more importantly due to its indispensable qualities like higher dimensional accuracy and precision of the machined components which are highly desirable in … [Show full abstract] the machining industries. Wire EDM effectuates a plasma channel in-between the anode and cathode by using the electrical energy and converts it into thermal energy capable of producing 8000 – 12,000 °C temperature. This paper reviews the works carried out in wire electrical discharge machining of die and tool grade steels. The die steels are utilised in manufacturing of forging dies, die-casting, die blocks electricity questions for class 10, and drawing dies etc. This paper addresses the different methodologies adopted, optimisation techniques employed and various input parameters chosen along with their focussed output parameters and the effect of these input parameters on the results obtained. This paper also reviews the research contributed to achieve fine surface finish during machining and controlling the breakage of wire or earlier detection and indication of wire breakage. Finally the paper puts forth some recommendations for future research scopes in the machining of die steels using wire edm. View full-text Discover more