THE EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF UNCOATED CEMENTIT CARBIDE INSERT AND CUTTING PARAMETERS ON SURFACE ROUGHNESS

In this work, AISI 1030 steel has been machined on a CNC lathe without cutting fluid, at various cutting speed and feed rate values with a constant depth of cut. Effect of cutting speed and feed rate on surface rougness were investigated by machining AISI 1030 steel by a carbide insert without coating. In the experiments five different feed rate values between 0.25 and 0.45 mm/dev and three different cutting speed settings 100, 200 and 300 m/dak were used. It is found that at lower feed rates, lower surface roughness is and at higher cutting speeds, higher surface roughness values are obtained. The lessening of cutting speed about 80 % improves the surface roughness 215 %, by increasing the cut-off rate about 200 % obtained an improvement of 13% respectively.

KAPLAMASIZ SEMENTÝT KARBÜR KESÝCÝ TAKIM VE KESME PARAMETRELERÝNÝN YÜZEY PÜRÜZLÜLÜÐÜNE ETKÝSÝNÝN DENEYSEL OLARAK ÝNCELENMESÝ

Bu çalýþmada, AISI 1030 çeliði bilgisayarlý sayýsal denetimli (BSD) torna tezgahýnda, soðutma sývýsý kullanýlmadan, kesme derinliði sabit tutularak (2 mm), deðiþik kesme hýzý ve ilerleme hýzý deðerlerinde kesme iþlemi gerçekleþtirilmiþtir. AISI 1030 çeliði kaplamasýz sementit karbür kesici takýmla iþlenerek, kesme parametrelerinden kesme hýzý ve ilerleme hýzý deðerinin yüzey pürüzlülüðüne etkisi araþtýrýlmýþtýr. Deneylerde, 0.25 - 0.45 mm/dev arasýnda beþ farklý ilerleme ve 100, 200 ve 300 m/dak kesme hýzý kullanýlmýþtýr. Ýlerleme deðerinin % 80 azaltýlmasýyla yüzey pürüzlülüðünde % 215 iyileþme saðlanmýþ, kesme hýzýnýn % 200 azaltýlmasýyla ise % yüzey pürüzlülüðünde % 13 iyileþme elde edilmiþtir.