DEEP MICRO-HOLE DRILLING FOR HADFIELD STEEL BY ELECTRO-DISCHARGE MACHINING (EDM)
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Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inst Za Kovinske Materiale I In Tehnologie
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, a new system for drilling deep micro-holes was designed for Hadfield steel (which is difficult to process with classical methods) with the electro-discharge-machining method (EDM) and the system was experimentally examined. The tests were carried out at three different discharge currents (6, 12 and 24) A, three different electrode-tool rotational speeds (200, 400 and 600) r/min, three different dielectric spray pressures (40, 80 and 120) bar, a constant pulse duration (12 mu s) and a constant pulse interval (3 mu s). After the tests the effects of the processing parameters on the basic performance outputs (the material removal rate -MRR), the electrode wear rate (EWR) and the relative wear (RW)) were investigated. Additionally, an analysis of variance (ANOVA) was also applied to identify the most significant factor. Optimum operating parameters were determined using the desirability-function analysis through the response surface methodology (RSM). It was found that the most effective variable affecting the MRR, EWR and RW was the discharge current. The discharge current was found to be the most significant control factor influencing the performance of the machining process.
Açıklama
Anahtar Kelimeler
deep micro-EDM, hole drilling, Hadfield steel, multi-response optimization, ANOVA
Kaynak
Materiali in Tehnologije
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
49
Sayı
3
