ANALISIS PENGARUH VARIASI PUTARAN DAN JENIS MEDIA PENDINGIN TERHADAP KEAUSAN MATA BOR HSS PADA PROSES PENGEBORAN MATERIAL BAJA S45C

Maulana, Sigit Ugi (2025) ANALISIS PENGARUH VARIASI PUTARAN DAN JENIS MEDIA PENDINGIN TERHADAP KEAUSAN MATA BOR HSS PADA PROSES PENGEBORAN MATERIAL BAJA S45C. Sarjana (S1) thesis, Universitas Islam "45" Bekasi.

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Abstract

ABSTRACT This study aims to analyze the effect of drilling machine rotation speed and the type of coolant used on the level of wear on drill bits using medium carbon steel type S45C. This study uses an experimental approach with the aim of determining the differences in the level of drill bit wear that occurs during the drilling process, based on direct experiments carried out with certain treatments. The variations in rotation speed tested were 540 RPM, 800 RPM, and 1200 RPM, while the types of coolants used included Dromus, Cutting oils, and cooking oil. Data analysis was carried out using a comparative descriptive method. The results showed that the higher the friction between the drill bit and the workpiece, and the lower the lubrication properties applied, the greater the level of wear that occurs. Based on the test results, at a speed of 1200 RPM with cooking oil coolant, the highest level of wear was recorded on S45C Steel, with an average wear of 0.058 mm, when compared to other speed and coolant variations. Keyword : Drill bit, RPM, Coolant, Thrist

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