ELEKTRO EROZYON İLE İŞLEMEDE TAKIM AŞINMA ORANININ VE YANAL AÇIKLIĞIN TAGUCHI YÖNTEMİ İLE OPTİMİZASYONU

Bu çalışmada, Caldie soğuk iş takım çeliğinin EEİ tezgahında işlenebilirliği, takım aşınma oranı ve yanal açıklık için Cu-Cr-Zr elektrot kullanılarak deneysel olarak incelenmiştir. Deneysel çalışmada işleme parametreleri olarak boşalım akımı, vurum süresi ve çevrim süresi kullanılmıştır. En düşük takım aşınma oranı ve yanal açıklık için işlenebilirlik seviyeleri belirlenmiştir. Seviye parametrelerinin takım aşınma oranı ve yanal açıklık üzerindeki etkisi ANOVA yardımıyla hesaplanmıştır. Deneysel sonuçlar üç boyutlu grafikler kullanılarak yorumlanmıştır. Elektrot aşınma oranı için optimum işleme deney koşulu A1B1C1 iken, yanal açıklık için optimum işleme koşulu A1B1C2 olarak belirlenmiştir. ANOVA analizi sonucunda elektrot aşınma oranı ve yanal açıklık üzerinde en güçlü parametrenin boşalım akımı olduğu hesaplanmıştır.

Anahtar Kelimeler:

EEİ, Bakır, Yanal açıklık, Takım aşınma oranı, Optimizasyon

TAGUCHI METHOD FOR OPTIMIZING TOOL WEAR RATE AND OVERCUT IN ELECTRO DISCHARGE MACHINING

In this study, machinability of Caldie cold work tool steel on EDM machine was experimentally investigated by using Cu-Cr-Zr electrode for tool wear rate (TWR) and overcut. In the experiment tests, discharge current, pulse duration and duty cycle were used as processing parameters. Machinability levels were determined for the lowest TWR and overcut. The effect of level parameters on TWR and overcut were calculated with the help of ANOVA. Experimental results are interpreted with using three-dimensional graphics. While the optimum machining test condition for electrode wear rate was A1B1C1, the optimum machining level for overcut was determined as A1B1C2. As a result of ANOVA analysis, it was calculated that discharge current was the most powerful parameter on TWR and overcut.

Keywords:

EDM, Copper, Overcut, Tool wear rate, Optimization,

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