Reaming is a common finishing process for improving the drilled holes surface quality. Choosing an appropriate finishing method in drilling process has a significant effect on the surface quality of holes and in decreasing the process total cost and time. In this study, four similar holes were drilled on the AISI 4340 workpiece with different two pair feed rates. The drilling process was perfor...

Recently, many materials have shown that they can be used as alternatives to chemicals in order improve the properties of drilling fluids. Some these are banana peels and corn cobs which both considered environmentally- friendly materials. The results X-ray diffraction examination proved main components cellulose hemicellulose, contribute greatly increasing effectiveness two Due their distinct ...