An Investigation of the Effect of Parameters and Chip Slenderness Ratio on Drilling Process Quality of AISI 1050 Steel

Abstract

e chip slenderness ratio is a vital parameter in theoretical and applicable machining operations. In predrilled drilling operations of AISI 1050 steel alloy, HSS drills were employed, and the effect of the selected parameters on the chip slenderness ratio and also the effect of the chip slenderness ratio on the thrust force, surface roughness, drilled hole delamination, tool wear, and chip morphology were investigated. e major parameters, influential on the chip slenderness ratio, were feed rate and point angle, while spindle speed was too small to be negligible. With increasing the chip slenderness ratio, the thrust force and the tool wear decreased, which resulted in appropriate chip morphology, but there were increases in surface roughness. However, the chip slenderness ratio had no effect on the drilled hole delamination.

Variasi Konduktivitas Termal Pada Proses Pemotongan Ss400 Dengan Media Pendingin Dromus Terhadap Kekasaran Permukaan

“…Pengaruh suhu terhadap konduktivitas termal relatif kecil, namun konduksinya meningkat jika suhu meningkat, semakin besar rongga semakin tidak baik kondiktivitasnya yang menyebabkan rendahnya kekasaran permukaan. [2][3][4] .…”

Correlation of surface roughness, tool wear, and chip slenderness ratio in the lathe process of aluminum alloy – 6061

“…As with the increasing chip slenderness ratio (δ), the driving force and tool wear decrease. The chip slenderness ratio (δ), optimal is 5:1, is the result of simultaneous research in the process of drilling and lathe parameters which are influenced by depth of cut and feed rate, thus affecting surface roughness [6].…”

“…7 shows the results of measurement of the surface area of verification of the surface area of tool wear model 7, tool nose radius at 1.2 mm, measurement with 1,000 X magnification produces an area of 5451.0835 μm 2 (0.54 mm 2 ), lathe processing time is 210 seconds with 3 x processes (70 seconds/process). Verification of the surface roughness value of 0.79 μm and the chip slenderness ratio of 9.76, according to [2,5,6,10,11]. If the nose radius increases, the area of sliding contact increases, resulting in a large surface area of flank wear (Vb).…”