This report provides results recorded from the application of a coalescing plate separator to grinding and lathe coolant filtration. Use of the filter and normal recommended practices in monitoring coolants significantly extended coolant life, increased the tool life of carbide inserts and grinding wheels an average of 25'10, and resulted in cleaner machines and coolant sumps. The use of deioni...

The present investigation aimed at a sustainable green turning operation of Ti-6Al-4V alloy using multi-objective optimization surface roughness, tool flank wear, material removal rate, and wear loss with cutting speed, feed depth cut as input parameters. experiments were performed on CNC lathe machine an alumina-zirconia (Al2O3-ZrO2) ceramic insert under dry machining environment. to examine t...

lumbar hernias (lh) accounts for less than 1.5% of total hernia incidence. it can occur in two separate triangular areas of the flank. about 300 cases have been reported in the literature. here, we report a 55-year old man with acute painful left side flank mass and final diagnosis of lh. the mass was appeared about three hours before admission and his pain was slight at first but became more s...

This paper describes an experimental investigation on machining of a difficult-to-cut material, AISI D2 steel of hardness 62 HRC with PCBN tools. It was found that the most feasible feeds and speeds fall in the ranges 0.08–0.20 mm/rev and 70–120 m/min, respectively and that most of the tested PCBN tools reached the end of life mainly due to flank wear. The highest acceptable values of tool life...

INTRODUCTION The manufacturing of complex shaped microstructures on microsystem parts in brittle materials provides a high geometrical accuracy [1]. This requirement can only be met by using microgrinding processes. There, metal bonded diamond grinding tools offer a remarkable potential due to their favorable wear behavior [2]. However, the dressing of complex microprofiles on these tools is no...

In this work we present the cutting performance of Ti0.50Al0.50N coatings which have been deposited with both a fixed and an alternating bias of -35 V and -70 V together with a Ti0.33Al0.67N reference coating grown at -35 V. During deposition of the bias-layered coatings, the bias was instantaneously changed with four different bias-layer periods ranging from approximately 250 to 1500 nm. For t...