EFFECT OF NOSE RADIUS FOR ROUND CARBIDE TIPS ON SURFACE ROUGHNESS FOR FACE MILLING OPERATION

Faculty of Engineering, EL-Minia University. EL-Minia, Egypt

In this study face milling operations were carried out on mild steel to indicate the effect of

cutting parameters on surface roughness. It was found that surface roughness carbide tips

were reduced by using round carbide tips. By using two round carbide tips having nose radii

of 6 mm and 9.5 mm, it could be found that surface roughness is good enough, at most feed

rates for nose radius of 9.5 mm , by using the same cutting speed and the same depth of cut. It

was found also that the lowest depth of cut (0.1 mm ) gives the best surface roughness

compared with the results obtained from the other values of depth of cut used (0.2, 0.5 and 1

mm) .