Hüseyin GÜRBÜZ, Şehmus BADAY, İbrahim HAMARAT

Tel Erozyon ile Kesmede Farklı Tel Elektrotların ve Soğutma Yöntemlerinin Yüzey Pürüzlülüğü Üzerine Etkisi

Tel erozyon ile işlemede, makine performansının değerlendirmesinde en önemli kriterlerden biri yüzeypürüzlülüğüdür. Bu çalışmada, tel erozyonla işlemede farklı malzemelerden yapılmış tel elektrotların vefarklı soğutma tekniklerinin farklı iş parçası malzemelerinin yüzey pürüzlülüğüne etkisi deneysel olarakaraştırılmıştır. Deney malzemesi olarak AISI D2 takım çeliği ve AISI 304 paslanmaz çelik, tel elektrotolarak pirinç, bakır ve çinko kaplı pirinç teller ve soğutma yöntemi olarak ise püskürtmeli ve daldırılmışyöntem kullanılmıştır. Kare şeklinde işlenen numunelerin farklı tip elektrotlara, soğutma yöntemlerine veiş parçası malzemesine bağlı olarak yüzey pürüzlülük sonuçları değerlendirilmiştir. Elektrot tipine bağlıolarak en düşük yüzey pürüzlülük değerleri çinko kaplı pirinç tel elektrotlarla elde edilirken en yüksekyüzey pürüzlülük değerleri ise kaplamasız pirinç tel elektrotlarla elde edilmiştir. AISI D2 malzemesindenelde edilen yüzey pürüzlülük değerleri AISI 304 malzemesine göre daha iyi sonuçlara verdiği tespitedilmiştir. Soğutma yöntemine göre değerlendirildiğinde, en iyi yüzey pürüzlülük değerleri püskürtmelisoğutmayla işlemede elde edilmiştir.

Effects of Different Wire Electrodesand Cooling Methods on Surface RoughnessIn Wire Electro Discharge Machining

One of the most important criteria in assessing machine performance in wire electro discharge machining technology is surface roughness. In this study, the effects of wire electrodes made from different materials and cooling techniques on surface roughness of various workpiece materials were experimentally investigated in wire electro discharge machining. As test materials, AISI D2 tool steel and AISI 304 stainless steel and as wire electrodes, brass, copper and zinc coated brass wires and as cooling method, flushing and submerged techniques were used. Surface roughness results of square shaped machining samples were evaluated depending on different types of electrodes, cooling methods, and workpiece materials. Depending on the type of the electrode, while the lowest surface roughness values were obtained with zinc coated brass wire electrodes, the highest surface roughness values were obtained with uncoated brass wire electrodes. It was found that surface roughness values obtained from AISI D2 material gave better results compared to AISI 304 material. When it was assessed in terms of cooling techniques, the best surface roughness values were obtained while machining with flush cooling.

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