THE EFFECT OF BUILD UP EDGE FORMATION ON THE MACHINING CHARACTERISTICS IN AUSTEMPERED FERRITIC DUCTILE IRON
Küçük Resim Yok
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
AMER SOC MECHANICAL ENGINEERS
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, chip formation mechanism during the machining of austempered ferritic DI and the effect of the emerging chip morphology on such machining properties as surface roughness and cutting forces has been scrutinized. After austenitizing at 900 degrees C for 90 min, DI specimens were austempered in a salt bath at 380 degrees C for 90 min. Chip roots were produced by using a quick stop device during the machining of austempered specimens in different cutting speeds. The metallographies of these specimens were performed and chip morphologies were examined. The fact that the cutting speed increased led to a decrease in built-up edge formation. Depending on this fact, it was detected that the change in built-up edge thickness substantially affected the surface roughness and cutting forces. It was also detected that during the machining, with the effect of cutting forces and stress, spheroidal graphites were broken off in the chip and lost their sphericity and so that the chip became fragile and unstable and grafites here displayed a lubricant feature.
Açıklama
ASME International Mechanical Engineering Congress and Exposition (IMECE2013) -- NOV 15-21, 2013 -- San Diego, CA
Anahtar Kelimeler
Built-Up Edge, Surface roughness, Cutting forces, Austempered Ductile Iron
Kaynak
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2013, VOL 2B
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
