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    KRİYOJENİK İŞLEM UYGULANMIŞ SOĞUK İŞ TAKIM ÇELİĞİ ZIMBA İLE AISI 304 PASLANMAZ ÇELİK SAÇ MALZEMENİN İŞLENEBİLME PERFORMANSININ ARAŞTIRILMASI
    (Düzce Üniversitesi, 2013) Arslan, Yusuf; Uygur, İlyas; Bayraktar, Hidayet
    In this study, the DIN 9861 pierce punchs made of AISI D3 tool steel were subjected to the cryogenic treatment and the wears of punches were examined. For this purpose, the D3 tool steel punches were treated in cryogenic at -145o C. Each punch at the end of 500th , 1500th , th , 3000th cycle, the face and flank wears of punches were obtained and measured by the optical microscopy and SEM and images. It was generally found that the cryogenic treatment had positive effects on the D3 tool steel punches with increased wear resistance. It has been observed that while increasing the burnish height caused decrease in the fracture height. Hence, it was increased the rollover and burr height on blanked part edge geometry. According to the experimental results in the blanking operation, cryogenic processes have significant effects on the blanked part edge geometry for AISI 304 austenitic stainless steel sheet.