ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this work, a surface roughness study on the die-sinking electrical discharge machining(EDM) of siliconised silicon carbide (SiSiC) has been carried out. The selection of the abovementionedconductive ceramic was made taking into account its wide range of applications in theindustrial field: high temperature gas turbines, bearings, seals and lining of industrial furnaces. Thisstudy was made only for the finish stages, due to the enormous importance that a good surfacequality has over such important properties as, in the case of ceramic materials: corrosion, fatigueand wear resistance. The present study has been carried out on the influence of five design factors:intensity supplied by the generator of the EDM machine (I), pulse time (ti), duty cycle (η), opencircuitvoltage (U) and dielectric flushing pressure (P), which are the most relevant parameters to becontrolled by the EDM process machinists, over two roughness parameters such as Ra and Rq. Thestudy of the behaviour of the two previously mentioned parameters has been done by means of thetechnique of design of experiments (DOE), which allows us to carry out the previous analysisperforming a relatively small number of experiments. In this case, a 25-1 fractional factorial design,whose resolution is V, has been selected due to the number of factors considered in the study
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.526.151.pdf
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